From 112a07725f72cdbf59ba96dfddf3b826bc53708b Mon Sep 17 00:00:00 2001
From: Thomas Wilkerling <thomas@nextapps.de>
Date: Tue, 1 Apr 2025 10:29:03 +0200
Subject: [PATCH] improve result highlighting #480

---
 dist/flexsearch.bundle.debug.js         | 578 +++++++++----------
 dist/flexsearch.bundle.min.js           | 175 +++---
 dist/flexsearch.bundle.module.debug.js  | 572 +++++++++---------
 dist/flexsearch.bundle.module.min.js    | 177 +++---
 dist/flexsearch.compact.debug.js        | 736 ++++++++++++------------
 dist/flexsearch.compact.min.js          |  95 ++-
 dist/flexsearch.compact.module.debug.js | 730 ++++++++++++-----------
 dist/flexsearch.compact.module.min.js   |  97 ++--
 dist/flexsearch.es5.debug.js            | 626 ++++++++++----------
 dist/flexsearch.es5.min.js              | 157 +++--
 dist/flexsearch.light.debug.js          | 190 +++---
 dist/flexsearch.light.min.js            |  26 +-
 dist/flexsearch.light.module.debug.js   | 184 +++---
 dist/flexsearch.light.module.min.js     |  28 +-
 dist/module-debug/bundle.js             |   2 +
 dist/module-debug/document/search.js    |  67 +--
 dist/module-debug/index.js              |  56 +-
 dist/module-debug/index/remove.js       |  35 +-
 dist/module-debug/intersect.js          |   7 +-
 dist/module-min/bundle.js               |   2 +-
 dist/module-min/document/search.js      |   2 +-
 dist/module-min/index.js                |   2 +-
 dist/module-min/index/remove.js         |   2 +-
 dist/module-min/intersect.js            |   2 +-
 dist/module/bundle.js                   |   2 +
 dist/module/document/search.js          |  67 +--
 dist/module/index.js                    |  56 +-
 dist/module/index/remove.js             |  35 +-
 dist/module/intersect.js                |   7 +-
 index.d.ts                              |  55 +-
 package-lock.json                       |   4 +-
 package.json                            |   2 +-
 src/bundle.js                           |   2 +
 src/document/search.js                  |  68 +--
 test/highlight.js                       |  69 ++-
 35 files changed, 2466 insertions(+), 2449 deletions(-)

diff --git a/dist/flexsearch.bundle.debug.js b/dist/flexsearch.bundle.debug.js
index 76c6f3f..c844cad 100644
--- a/dist/flexsearch.bundle.debug.js
+++ b/dist/flexsearch.bundle.debug.js
@@ -1,12 +1,12 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle/Debug)
+ * FlexSearch.js v0.8.149 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
 (function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;
-var t;
+var v;
 function z(a, c, b) {
   const e = typeof b, d = typeof a;
   if ("undefined" !== e) {
@@ -47,10 +47,10 @@ function z(a, c, b) {
 function B() {
   return Object.create(null);
 }
-function E(a) {
+function F(a) {
   return "string" === typeof a;
 }
-function I(a) {
+function H(a) {
   return "object" === typeof a;
 }
 function aa(a) {
@@ -61,7 +61,7 @@ function aa(a) {
   return c;
 }
 function ba(a, c) {
-  if (E(c)) {
+  if (F(c)) {
     a = a[c];
   } else {
     for (let b = 0; a && b < c.length; b++) {
@@ -90,8 +90,8 @@ function ja(a = {}) {
     this.assign(a);
   }
 }
-t = ja.prototype;
-t.assign = function(a) {
+v = ja.prototype;
+v.assign = function(a) {
   this.normalize = z(a.normalize, !0, this.normalize);
   let c = a.include, b = c || a.exclude || a.split, e;
   if (b || "" === b) {
@@ -155,20 +155,20 @@ t.assign = function(a) {
   }
   return this;
 };
-t.addStemmer = function(a, c) {
+v.addStemmer = function(a, c) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, c);
   this.A += (this.A ? "|" : "") + a;
   this.N = null;
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addFilter = function(a) {
+v.addFilter = function(a) {
   "function" === typeof a ? this.filter = a : (this.filter || (this.filter = new Set()), this.filter.add(a));
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addMapper = function(a, c) {
+v.addMapper = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -177,10 +177,10 @@ t.addMapper = function(a, c) {
   }
   this.mapper || (this.mapper = new Map());
   this.mapper.set(a, c);
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addMatcher = function(a, c) {
+v.addMatcher = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -191,26 +191,26 @@ t.addMatcher = function(a, c) {
   this.matcher.set(a, c);
   this.h += (this.h ? "|" : "") + a;
   this.M = null;
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addReplacer = function(a, c) {
+v.addReplacer = function(a, c) {
   if ("string" === typeof a) {
     return this.addMatcher(a, c);
   }
   this.replacer || (this.replacer = []);
   this.replacer.push(a, c);
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.encode = function(a) {
+v.encode = function(a) {
   if (this.cache && a.length <= this.K) {
     if (this.H) {
       if (this.B.has(a)) {
         return this.B.get(a);
       }
     } else {
-      this.H = setTimeout(J, 50, this);
+      this.H = setTimeout(I, 50, this);
     }
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = ia ? a.normalize("NFKD").replace(ia, "").toLowerCase() : a.toLowerCase());
@@ -232,7 +232,7 @@ t.encode = function(a) {
                 continue;
               }
             } else {
-              this.H = setTimeout(J, 50, this);
+              this.H = setTimeout(I, 50, this);
             }
           }
           this.stemmer && 2 < g.length && (this.N || (this.N = new RegExp("(?!^)(" + this.A + ")$")), d = g, g = g.replace(this.N, h => this.stemmer.get(h)), d !== g && this.filter && g.length >= this.minlength && ("function" === typeof this.filter ? !this.filter(g) : this.filter.has(g)) && (g = ""));
@@ -259,12 +259,12 @@ t.encode = function(a) {
   this.cache && a.length <= this.K && (this.B.set(a, b), this.B.size > this.S && (this.B.clear(), this.K = this.K / 1.1 | 0));
   return b;
 };
-function J(a) {
+function I(a) {
   a.H = null;
   a.B.clear();
   a.G.clear();
 }
-;let K, M;
+;let J, M;
 async function ka(a) {
   a = a.data;
   var c = a.task;
@@ -273,7 +273,7 @@ async function ka(a) {
   switch(c) {
     case "init":
       M = a.options || {};
-      (c = a.factory) ? (Function("return " + c)()(self), K = new self.FlexSearch.Index(M), delete self.FlexSearch) : K = new N(M);
+      (c = a.factory) ? (Function("return " + c)()(self), J = new self.FlexSearch.Index(M), delete self.FlexSearch) : J = new N(M);
       postMessage({id:b});
       break;
     default:
@@ -288,9 +288,9 @@ async function ka(a) {
         if (!M.import || "function" !== typeof M.import) {
           throw Error('Either no extern configuration provided for the Worker-Index or no method was defined on the config property "import".');
         }
-        e[0] && (a = await M.import.call(K, e[0]), K.import(e[0], a));
+        e[0] && (a = await M.import.call(J, e[0]), J.import(e[0], a));
       } else {
-        (d = e && K[c].apply(K, e)) && d.then && (d = await d);
+        (d = e && J[c].apply(J, e)) && d.then && (d = await d);
       }
       postMessage("search" === c ? {id:b, msg:d} : {id:b});
   }
@@ -598,35 +598,35 @@ T.prototype.add = function(a) {
   let b = this.index[c];
   b ? (c = b.size, b.add(a), (c -= b.size) && this.size++) : (this.index[c] = b = new Set([a]), this.h.push(b), this.size++);
 };
-t = S.prototype;
-t.has = T.prototype.has = function(a) {
+v = S.prototype;
+v.has = T.prototype.has = function(a) {
   const c = this.index[this.B(a)];
   return c && c.has(a);
 };
-t.delete = T.prototype.delete = function(a) {
+v.delete = T.prototype.delete = function(a) {
   const c = this.index[this.B(a)];
   c && c.delete(a) && this.size--;
 };
-t.clear = T.prototype.clear = function() {
+v.clear = T.prototype.clear = function() {
   this.index = B();
   this.h = [];
   this.size = 0;
 };
-t.values = T.prototype.values = function*() {
+v.values = T.prototype.values = function*() {
   for (let a = 0; a < this.h.length; a++) {
     for (let c of this.h[a].values()) {
       yield c;
     }
   }
 };
-t.keys = T.prototype.keys = function*() {
+v.keys = T.prototype.keys = function*() {
   for (let a = 0; a < this.h.length; a++) {
     for (let c of this.h[a].keys()) {
       yield c;
     }
   }
 };
-t.entries = T.prototype.entries = function*() {
+v.entries = T.prototype.entries = function*() {
   for (let a = 0; a < this.h.length; a++) {
     for (let c of this.h[a].entries()) {
       yield c;
@@ -661,7 +661,7 @@ function Ba(a) {
   return b;
 }
 ;U.prototype.add = function(a, c, b) {
-  I(a) && (c = a, a = ba(c, this.key));
+  H(a) && (c = a, a = ba(c, this.key));
   if (c && (a || 0 === a)) {
     if (!b && this.reg.has(a)) {
       return this.update(a, c);
@@ -674,7 +674,7 @@ function Ba(a) {
         d && e.add(a, d, !1, !0);
       } else {
         if (d = h.I, !d || d(c)) {
-          h.constructor === String ? h = ["" + h] : E(h) && (h = [h]), Da(c, h, this.J, 0, e, a, h[0], b);
+          h.constructor === String ? h = ["" + h] : F(h) && (h = [h]), Da(c, h, this.J, 0, e, a, h[0], b);
         }
       }
     }
@@ -696,7 +696,7 @@ function Ba(a) {
           f = ba(c, f);
         }
         if (d && f) {
-          E(f) && (f = [f]);
+          F(f) && (f = [f]);
           for (let h = 0, l, n; h < f.length; h++) {
             if (l = f[h], !k[l] && (k[l] = 1, (g = d.get(l)) ? n = g : d.set(l, n = []), !b || !n.includes(a))) {
               if (n.length === 2 ** 31 - 1) {
@@ -733,7 +733,7 @@ function Ba(a) {
               continue;
             }
             l = [l.V];
-          } else if (E(l) || l.constructor === String) {
+          } else if (F(l) || l.constructor === String) {
             k[l] = c[l];
             continue;
           }
@@ -791,19 +791,19 @@ function Da(a, c, b, e, d, f, g, k) {
   let h = [], l, n;
   l = B();
   for (let m = 0, q, p, r, u; m < c; m++) {
-    for (let v = 0; v < k; v++) {
-      if (r = a[v], m < r.length && (q = r[m])) {
+    for (let t = 0; t < k; t++) {
+      if (r = a[t], m < r.length && (q = r[m])) {
         for (let w = 0; w < q.length; w++) {
           p = q[w];
           (n = l[p]) ? l[p]++ : (n = 0, l[p] = 1);
           u = h[n] || (h[n] = []);
           if (!g) {
-            let y = m + (v || !d ? 0 : f || 0);
+            let y = m + (t || !d ? 0 : f || 0);
             u = u[y] || (u[y] = []);
           }
           u.push(p);
           if (g && b && n === k - 1 && u.length - e === b) {
-            return u;
+            return e ? u.slice(e) : u;
           }
         }
       }
@@ -1214,7 +1214,7 @@ W.prototype.resolve = function(a, c, b) {
 };
 B();
 U.prototype.search = function(a, c, b, e) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   let d = [];
   var f = [], g;
   let k;
@@ -1233,7 +1233,7 @@ U.prototype.search = function(a, c, b, e) {
     m = !1 !== b.resolve;
     if (!m && !p) {
       if (h = h || this.field) {
-        E(h) ? p = h : (h.constructor === Array && 1 === h.length && (h = h[0]), p = h.field || h.index);
+        F(h) ? p = h : (h.constructor === Array && 1 === h.length && (h = h[0]), p = h.field || h.index);
       }
       if (!p) {
         throw Error("Apply resolver on document search requires either the option 'pluck' to be set or just select a single field name in your query.");
@@ -1246,53 +1246,53 @@ U.prototype.search = function(a, c, b, e) {
     c || (c = 100);
     if (l && (!this.db || !e)) {
       l.constructor !== Array && (l = [l]);
-      var v = [];
+      var t = [];
       for (let A = 0, x; A < l.length; A++) {
         x = l[A];
-        if (E(x)) {
+        if (F(x)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
         if (x.field && x.tag) {
           var w = x.tag;
           if (w.constructor === Array) {
             for (var y = 0; y < w.length; y++) {
-              v.push(x.field, w[y]);
+              t.push(x.field, w[y]);
             }
           } else {
-            v.push(x.field, w);
+            t.push(x.field, w);
           }
         } else {
           w = Object.keys(x);
-          for (let D = 0, H, C; D < w.length; D++) {
-            if (H = w[D], C = x[H], C.constructor === Array) {
-              for (y = 0; y < C.length; y++) {
-                v.push(H, C[y]);
+          for (let C = 0, G, D; C < w.length; C++) {
+            if (G = w[C], D = x[G], D.constructor === Array) {
+              for (y = 0; y < D.length; y++) {
+                t.push(G, D[y]);
               }
             } else {
-              v.push(H, C);
+              t.push(G, D);
             }
           }
         }
       }
-      if (!v.length) {
+      if (!t.length) {
         throw Error("Your tag definition within the search options is probably wrong. No valid tags found.");
       }
-      l = v;
+      l = t;
       if (!a) {
         m = [];
-        if (v.length) {
-          for (f = 0; f < v.length; f += 2) {
+        if (t.length) {
+          for (f = 0; f < t.length; f += 2) {
             if (this.db) {
-              p = this.index.get(v[f]);
+              p = this.index.get(t[f]);
               if (!p) {
-                console.warn("Tag '" + v[f] + ":" + v[f + 1] + "' will be skipped because there is no field '" + v[f] + "'.");
+                console.warn("Tag '" + t[f] + ":" + t[f + 1] + "' will be skipped because there is no field '" + t[f] + "'.");
                 continue;
               }
-              m.push(p = p.db.tag(v[f + 1], c, u, g));
+              m.push(p = p.db.tag(t[f + 1], c, u, g));
             } else {
-              p = Qa.call(this, v[f], v[f + 1], c, u, g);
+              p = Qa.call(this, t[f], t[f + 1], c, u, g);
             }
-            d.push({field:v[f], tag:v[f + 1], result:p});
+            d.push({field:t[f], tag:t[f + 1], result:p});
           }
         }
         return m.length ? Promise.all(m).then(function(A) {
@@ -1306,34 +1306,34 @@ U.prototype.search = function(a, c, b, e) {
     h && h.constructor !== Array && (h = [h]);
   }
   h || (h = this.field);
-  v = !e && (this.worker || this.db) && [];
-  let F;
-  for (let A = 0, x, D, H; A < h.length; A++) {
-    D = h[A];
+  t = !e && (this.worker || this.db) && [];
+  let E;
+  for (let A = 0, x, C, G; A < h.length; A++) {
+    C = h[A];
     if (this.db && this.tag && !this.D[A]) {
       continue;
     }
-    let C;
-    E(D) || (C = D, D = C.field, a = C.query || a, c = C.limit || c, u = C.offset || u, r = C.suggest || r, g = this.store && (C.enrich || g));
+    let D;
+    F(C) || (D = C, C = D.field, a = D.query || a, c = D.limit || c, u = D.offset || u, r = D.suggest || r, g = this.store && (D.enrich || g));
     if (e) {
       x = e[A];
     } else {
-      if (w = C || b, y = this.index.get(D), l && (this.db && (w.tag = l, F = y.db.support_tag_search, w.field = h), F || (w.enrich = !1)), v) {
-        v[A] = y.search(a, c, w);
+      if (w = D || b, y = this.index.get(C), l && (this.db && (w.tag = l, E = y.db.support_tag_search, w.field = h), E || (w.enrich = !1)), t) {
+        t[A] = y.search(a, c, w);
         w && g && (w.enrich = g);
         continue;
       } else {
         x = y.search(a, c, w), w && g && (w.enrich = g);
       }
     }
-    H = x && (m ? x.length : x.result.length);
-    if (l && H) {
+    G = x && (m ? x.length : x.result.length);
+    if (l && G) {
       w = [];
       y = 0;
       if (this.db && e) {
-        if (!F) {
-          for (let G = h.length; G < e.length; G++) {
-            let L = e[G];
+        if (!E) {
+          for (let K = h.length; K < e.length; K++) {
+            let L = e[K];
             if (L && L.length) {
               y++, w.push(L);
             } else if (!r) {
@@ -1342,16 +1342,16 @@ U.prototype.search = function(a, c, b, e) {
           }
         }
       } else {
-        for (let G = 0, L, sb; G < l.length; G += 2) {
-          L = this.tag.get(l[G]);
+        for (let K = 0, L, rb; K < l.length; K += 2) {
+          L = this.tag.get(l[K]);
           if (!L) {
-            if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), r) {
+            if (console.warn("Tag '" + l[K] + ":" + l[K + 1] + "' will be skipped because there is no field '" + l[K] + "'."), r) {
               continue;
             } else {
               return m ? d : new W(d);
             }
           }
-          if (sb = (L = L && L.get(l[G + 1])) && L.length) {
+          if (rb = (L = L && L.get(l[K + 1])) && L.length) {
             y++, w.push(L);
           } else if (!r) {
             return m ? d : new W(d);
@@ -1360,21 +1360,21 @@ U.prototype.search = function(a, c, b, e) {
       }
       if (y) {
         x = Ha(x, w, m);
-        H = x.length;
-        if (!H && !r) {
+        G = x.length;
+        if (!G && !r) {
           return m ? x : new W(x);
         }
         y--;
       }
     }
-    if (H) {
-      f[n] = D, d.push(x), n++;
+    if (G) {
+      f[n] = C, d.push(x), n++;
     } else if (1 === h.length) {
       return m ? d : new W(d);
     }
   }
-  if (v) {
-    if (this.db && l && l.length && !F) {
+  if (t) {
+    if (this.db && l && l.length && !E) {
       for (g = 0; g < l.length; g += 2) {
         f = this.index.get(l[g]);
         if (!f) {
@@ -1384,11 +1384,11 @@ U.prototype.search = function(a, c, b, e) {
             return m ? d : new W(d);
           }
         }
-        v.push(f.db.tag(l[g + 1], c, u, !1));
+        t.push(f.db.tag(l[g + 1], c, u, !1));
       }
     }
     const A = this;
-    return Promise.all(v).then(function(x) {
+    return Promise.all(t).then(function(x) {
       return x.length ? A.search(a, c, b, x) : x;
     });
   }
@@ -1398,20 +1398,20 @@ U.prototype.search = function(a, c, b, e) {
   if (p && (!g || !this.store)) {
     return d[0];
   }
-  v = [];
+  t = [];
   for (u = 0; u < f.length; u++) {
     r = d[u];
-    g && r.length && "undefined" === typeof r[0].doc && (this.db ? v.push(r = this.index.get(this.field[0]).db.enrich(r)) : r = V.call(this, r));
+    g && r.length && "undefined" === typeof r[0].doc && (this.db ? t.push(r = this.index.get(this.field[0]).db.enrich(r)) : r = V.call(this, r));
     if (p) {
       return m ? r : new W(r);
     }
     d[u] = {field:f[u], result:r};
   }
-  if (g && this.db && v.length) {
+  if (g && this.db && t.length) {
     const A = this;
-    return Promise.all(v).then(function(x) {
-      for (let D = 0; D < x.length; D++) {
-        d[D].result = x[D];
+    return Promise.all(t).then(function(x) {
+      for (let C = 0; C < x.length; C++) {
+        d[C].result = x[C];
       }
       return k ? Ra(d, c) : q ? Sa(d, a, A.index, A.field, A.D, q) : d;
     });
@@ -1420,45 +1420,41 @@ U.prototype.search = function(a, c, b, e) {
 };
 function Sa(a, c, b, e, d, f) {
   let g, k, h;
-  for (let n = 0, m, q, p, r; n < a.length; n++) {
-    let u = a[n].result;
-    m = a[n].field;
-    p = b.get(m);
-    q = p.encoder;
-    h = p.tokenize;
-    r = d[e.indexOf(m)];
-    q !== g && (g = q, k = g.encode(c));
-    for (let v = 0; v < u.length; v++) {
-      let w = "";
-      var l = ba(u[v].doc, r);
-      let y = g.encode(l);
-      l = l.split(g.split);
-      for (let F = 0, A, x; F < y.length; F++) {
-        A = y[F];
-        x = l[F];
-        if (!A || !x) {
-          continue;
-        }
-        let D;
-        for (let H = 0, C; H < k.length; H++) {
-          if (C = k[H], "strict" === h) {
-            if (A === C) {
-              w += (w ? " " : "") + f.replace("$1", x);
-              D = !0;
-              break;
-            }
-          } else {
-            const G = A.indexOf(C);
-            if (-1 < G) {
-              w += (w ? " " : "") + x.substring(0, G) + f.replace("$1", x.substring(G, C.length)) + x.substring(G + C.length);
-              D = !0;
-              break;
+  for (let l = 0, n, m, q, p; l < a.length; l++) {
+    let r = a[l].result;
+    n = a[l].field;
+    q = b.get(n);
+    m = q.encoder;
+    h = q.tokenize;
+    p = d[e.indexOf(n)];
+    m !== g && (g = m, k = g.encode(c));
+    for (let u = 0; u < r.length; u++) {
+      let t = "", w = ba(r[u].doc, p).split(/\s+/);
+      for (let y = 0, E, A; y < w.length; y++) {
+        E = w[y];
+        A = g.encode(E).join(" ");
+        let x;
+        if (A && E) {
+          for (let C = 0, G; C < k.length; C++) {
+            if (G = k[C], "strict" === h) {
+              if (A === G) {
+                t += (t ? " " : "") + f.replace("$1", E);
+                x = !0;
+                break;
+              }
+            } else {
+              const D = A.indexOf(G);
+              if (-1 < D) {
+                t += (t ? " " : "") + E.substring(0, D) + f.replace("$1", E.substring(D, G.length)) + E.substring(D + G.length);
+                x = !0;
+                break;
+              }
             }
           }
         }
-        D || (w += (w ? " " : "") + l[F]);
+        x || (t += (t ? " " : "") + w[y]);
       }
-      u[v].highlight = w;
+      r[u].highlight = t;
     }
   }
   return a;
@@ -1564,8 +1560,8 @@ function V(a) {
     a.db && (this.fastupdate = !1, this.mount(a.db));
   }
 }
-t = U.prototype;
-t.mount = function(a) {
+v = U.prototype;
+v.mount = function(a) {
   if (this.worker) {
     throw Error("You can't use Worker-Indexes on a persistent model. That would be useless, since each of the persistent model acts like Worker-Index by default (Master/Slave).");
   }
@@ -1594,7 +1590,7 @@ t.mount = function(a) {
   this.db = !0;
   return Promise.all(b);
 };
-t.commit = async function(a, c) {
+v.commit = async function(a, c) {
   const b = [];
   for (const e of this.index.values()) {
     b.push(e.commit(a, c));
@@ -1602,7 +1598,7 @@ t.commit = async function(a, c) {
   await Promise.all(b);
   this.reg.clear();
 };
-t.destroy = function() {
+v.destroy = function() {
   const a = [];
   for (const c of this.index.values()) {
     a.push(c.destroy());
@@ -1612,11 +1608,11 @@ t.destroy = function() {
 function Ua(a, c) {
   const b = new Map();
   let e = c.index || c.field || c;
-  E(e) && (e = [e]);
+  F(e) && (e = [e]);
   for (let d = 0, f, g; d < e.length; d++) {
     f = e[d];
-    E(f) || (g = f, f = f.field);
-    g = I(g) ? Object.assign({}, a, g) : a;
+    F(f) || (g = f, f = f.field);
+    g = H(g) ? Object.assign({}, a, g) : a;
     if (this.worker) {
       const k = new P(g);
       b.set(f, k);
@@ -1627,7 +1623,7 @@ function Ua(a, c) {
   }
   if (this.C) {
     a = c.store;
-    E(a) && (a = [a]);
+    F(a) && (a = [a]);
     for (let d = 0, f, g; d < a.length; d++) {
       f = a[d], g = f.field || f, f.custom ? (this.C[d] = f.custom, f.custom.V = g) : (this.C[d] = Ta(g, this.J), f.filter && ("string" === typeof this.C[d] && (this.C[d] = new String(this.C[d])), this.C[d].I = f.filter));
     }
@@ -1643,14 +1639,14 @@ function Ta(a, c) {
   e < b.length && (b.length = e);
   return 1 < e ? b : b[0];
 }
-t.append = function(a, c) {
+v.append = function(a, c) {
   return this.add(a, c, !0);
 };
-t.update = function(a, c) {
+v.update = function(a, c) {
   return this.remove(a).add(a, c);
 };
-t.remove = function(a) {
-  I(a) && (a = ba(a, this.key));
+v.remove = function(a) {
+  H(a) && (a = ba(a, this.key));
   for (var c of this.index.values()) {
     c.remove(a, !0);
   }
@@ -1670,7 +1666,7 @@ t.remove = function(a) {
   this.cache && this.cache.remove(a);
   return this;
 };
-t.clear = function() {
+v.clear = function() {
   const a = [];
   for (const c of this.index.values()) {
     const b = c.clear();
@@ -1685,27 +1681,27 @@ t.clear = function() {
   this.cache && this.cache.clear();
   return a.length ? Promise.all(a) : this;
 };
-t.contain = function(a) {
+v.contain = function(a) {
   return this.db ? this.index.get(this.field[0]).db.has(a) : this.reg.has(a);
 };
-t.cleanup = function() {
+v.cleanup = function() {
   for (const a of this.index.values()) {
     a.cleanup();
   }
   return this;
 };
-t.get = function(a) {
+v.get = function(a) {
   return this.db ? this.index.get(this.field[0]).db.enrich(a).then(function(c) {
     return c[0] && c[0].doc || null;
   }) : this.store.get(a) || null;
 };
-t.set = function(a, c) {
+v.set = function(a, c) {
   "object" === typeof a && (c = a, a = ba(c, this.key));
   this.store.set(a, c);
   return this;
 };
-t.searchCache = Va;
-t.export = function(a, c, b = 0, e = 0) {
+v.searchCache = Va;
+v.export = function(a, c, b = 0, e = 0) {
   if (b < this.field.length) {
     const g = this.field[b];
     if ((c = this.index.get(g).export(a, g, b, e = 1)) && c.then) {
@@ -1738,7 +1734,7 @@ t.export = function(a, c, b = 0, e = 0) {
   }
   return ya.call(this, a, c, d, f, b, e);
 };
-t.import = function(a, c) {
+v.import = function(a, c) {
   var b = a.split(".");
   "json" === b[b.length - 1] && b.pop();
   const e = 2 < b.length ? b[0] : "";
@@ -1830,7 +1826,57 @@ var bb = {X:Wa, W:Xa, Y:Xa, LatinBalance:{dedupe:!0, mapper:Ya}, LatinAdvanced:{
     a[b] = e;
   }
 }}, LatinExact:Wa, LatinDefault:Xa, LatinSimple:Xa};
-const cb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+N.prototype.remove = function(a, c) {
+  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (b) {
+    if (this.fastupdate) {
+      for (let e = 0, d; e < b.length; e++) {
+        if (d = b[e]) {
+          if (2 > d.length) {
+            d.pop();
+          } else {
+            const f = d.indexOf(a);
+            f === b.length - 1 ? d.pop() : d.splice(f, 1);
+          }
+        }
+      }
+    } else {
+      cb(this.map, a), this.depth && cb(this.ctx, a);
+    }
+    c || this.reg.delete(a);
+  }
+  this.db && (this.commit_task.push({del:a}), this.T && db(this));
+  this.cache && this.cache.remove(a);
+  return this;
+};
+function cb(a, c) {
+  let b = 0;
+  var e = "undefined" === typeof c;
+  if (a.constructor === Array) {
+    for (let d = 0, f, g; d < a.length; d++) {
+      if ((f = a[d]) && f.length) {
+        if (e) {
+          b++;
+        } else {
+          if (g = f.indexOf(c), 0 <= g) {
+            1 < f.length ? (f.splice(g, 1), b++) : delete a[d];
+            break;
+          } else {
+            b++;
+          }
+        }
+      }
+    }
+  } else {
+    for (let d of a.entries()) {
+      e = d[0];
+      const f = cb(d[1], c);
+      f ? b += f : a.delete(e);
+    }
+  }
+  return b;
+}
+;const eb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 N.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -1843,16 +1889,16 @@ N.prototype.add = function(a, c, b, e) {
         let r = c[this.rtl ? e - 1 - p : p];
         var d = r.length;
         if (d && (m || !n[r])) {
-          var f = this.score ? this.score(c, r, p, null, 0) : db(q, e, p), g = "";
+          var f = this.score ? this.score(c, r, p, null, 0) : fb(q, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
-                for (let u = 0, v; u < d; u++) {
+                for (let u = 0, t; u < d; u++) {
                   for (f = d; f > u; f--) {
                     g = r.substring(u, f);
-                    v = this.rtl ? d - 1 - u : u;
-                    var k = this.score ? this.score(c, r, p, g, v) : db(q, e, p, d, v);
-                    eb(this, n, g, k, a, b);
+                    t = this.rtl ? d - 1 - u : u;
+                    var k = this.score ? this.score(c, r, p, g, t) : fb(q, e, p, d, t);
+                    gb(this, n, g, k, a, b);
                   }
                 }
                 break;
@@ -1862,25 +1908,25 @@ N.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = r[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, r, p, g, k) : db(q, e, p, d, k);
-                  eb(this, n, g, h, a, b);
+                  var h = this.score ? this.score(c, r, p, g, k) : fb(q, e, p, d, k);
+                  gb(this, n, g, h, a, b);
                 }
                 g = "";
               }
             case "forward":
               if (1 < d) {
                 for (k = 0; k < d; k++) {
-                  g += r[this.rtl ? d - 1 - k : k], eb(this, n, g, f, a, b);
+                  g += r[this.rtl ? d - 1 - k : k], gb(this, n, g, f, a, b);
                 }
                 break;
               }
             default:
-              if (eb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
+              if (gb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
                 for (d = B(), g = this.U, f = r, k = Math.min(m + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((r = c[this.rtl ? e - 1 - p - h : p + h]) && !d[r]) {
                     d[r] = 1;
-                    const u = this.score ? this.score(c, f, p, r, h - 1) : db(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), v = this.bidirectional && r > f;
-                    eb(this, l, v ? f : r, u, a, b, v ? r : f);
+                    const u = this.score ? this.score(c, f, p, r, h - 1) : fb(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), t = this.bidirectional && r > f;
+                    gb(this, l, t ? f : r, u, a, b, t ? r : f);
                   }
                 }
               }
@@ -1892,10 +1938,10 @@ N.prototype.add = function(a, c, b, e) {
       c = "";
     }
   }
-  this.db && (c || this.commit_task.push({del:a}), this.T && fb(this));
+  this.db && (c || this.commit_task.push({del:a}), this.T && db(this));
   return this;
 };
-function eb(a, c, b, e, d, f, g) {
+function gb(a, c, b, e, d, f, g) {
   let k = g ? a.ctx : a.map, h;
   if (!c[b] || g && !(h = c[b])[g]) {
     if (g ? (c = h || (c[b] = B()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = h = []), k = k[e] || (k[e] = []), !f || !k.includes(d)) {
@@ -1913,62 +1959,62 @@ function eb(a, c, b, e, d, f, g) {
     }
   }
 }
-function db(a, c, b, e, d) {
+function fb(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
 ;N.prototype.search = function(a, c, b) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   let e = [], d, f, g, k = 0, h, l, n, m, q;
   b ? (a = b.query || a, c = b.limit || c, k = b.offset || 0, f = b.context, g = b.suggest, q = (h = !1 !== b.resolve) && b.enrich, n = b.boost, m = b.resolution, l = this.db && b.tag) : h = this.resolve;
   let p = this.encoder.encode(a);
   d = p.length;
   c = c || (h ? 100 : 0);
   if (1 === d) {
-    return gb.call(this, p[0], "", c, k, h, q, l);
+    return hb.call(this, p[0], "", c, k, h, q, l);
   }
   f = this.depth && !1 !== f;
   if (2 === d && f && !g) {
-    return gb.call(this, p[1], p[0], c, k, h, q, l);
+    return hb.call(this, p[1], p[0], c, k, h, q, l);
   }
-  let r = B(), u = 0, v;
-  1 < d && f && (v = p[0], u = 1);
-  m || 0 === m || (m = v ? this.U : this.resolution);
+  let r = B(), u = 0, t;
+  1 < d && f && (t = p[0], u = 1);
+  m || 0 === m || (m = t ? this.U : this.resolution);
   if (this.db) {
     if (this.db.search && (a = this.db.search(this, p, c, k, g, h, q, l), !1 !== a)) {
       return a;
     }
     const w = this;
     return async function() {
-      for (let y, F; u < d; u++) {
-        if ((F = p[u]) && !r[F]) {
-          r[F] = 1;
-          y = await hb(w, F, v, 0, 0, !1, !1);
-          if (y = ib(y, e, g, m)) {
+      for (let y, E; u < d; u++) {
+        if ((E = p[u]) && !r[E]) {
+          r[E] = 1;
+          y = await ib(w, E, t, 0, 0, !1, !1);
+          if (y = jb(y, e, g, m)) {
             e = y;
             break;
           }
-          v && (g && y && e.length || (v = F));
+          t && (g && y && e.length || (t = E));
         }
-        g && v && u === d - 1 && !e.length && (m = w.resolution, v = "", u = -1, r = B());
+        g && t && u === d - 1 && !e.length && (m = w.resolution, t = "", u = -1, r = B());
       }
-      return jb(e, m, c, k, g, n, h);
+      return kb(e, m, c, k, g, n, h);
     }();
   }
   for (let w, y; u < d; u++) {
     if ((y = p[u]) && !r[y]) {
       r[y] = 1;
-      w = hb(this, y, v, 0, 0, !1, !1);
-      if (w = ib(w, e, g, m)) {
+      w = ib(this, y, t, 0, 0, !1, !1);
+      if (w = jb(w, e, g, m)) {
         e = w;
         break;
       }
-      v && (g && w && e.length || (v = y));
+      t && (g && w && e.length || (t = y));
     }
-    g && v && u === d - 1 && !e.length && (m = this.resolution, v = "", u = -1, r = B());
+    g && t && u === d - 1 && !e.length && (m = this.resolution, t = "", u = -1, r = B());
   }
-  return jb(e, m, c, k, g, n, h);
+  return kb(e, m, c, k, g, n, h);
 };
-function jb(a, c, b, e, d, f, g) {
+function kb(a, c, b, e, d, f, g) {
   let k = a.length, h = a;
   if (1 < k) {
     h = Fa(a, c, b, e, d, f, g);
@@ -1977,13 +2023,13 @@ function jb(a, c, b, e, d, f, g) {
   }
   return g ? h : new W(h);
 }
-function gb(a, c, b, e, d, f, g) {
-  a = hb(this, a, c, b, e, d, f, g);
+function hb(a, c, b, e, d, f, g) {
+  a = ib(this, a, c, b, e, d, f, g);
   return this.db ? a.then(function(k) {
     return d ? k || [] : new W(k);
   }) : a && a.length ? d ? Ia.call(this, a, b, e) : new W(a) : d ? [] : new W();
 }
-function ib(a, c, b, e) {
+function jb(a, c, b, e) {
   let d = [];
   if (a && a.length) {
     if (a.length <= e) {
@@ -2004,7 +2050,7 @@ function ib(a, c, b, e) {
     return d;
   }
 }
-function hb(a, c, b, e, d, f, g, k) {
+function ib(a, c, b, e, d, f, g, k) {
   let h;
   b && (h = a.bidirectional && c > b) && (h = b, b = c, c = h);
   if (a.db) {
@@ -2013,62 +2059,18 @@ function hb(a, c, b, e, d, f, g, k) {
   a = b ? (a = a.ctx.get(b)) && a.get(c) : a.map.get(c);
   return a;
 }
-;N.prototype.remove = function(a, c) {
-  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (b) {
-    if (this.fastupdate) {
-      for (let e = 0, d; e < b.length; e++) {
-        if (d = b[e]) {
-          if (2 > d.length) {
-            d.pop();
-          } else {
-            const f = d.indexOf(a);
-            f === b.length - 1 ? d.pop() : d.splice(f, 1);
-          }
-        }
-      }
-    } else {
-      kb(this.map, a), this.depth && kb(this.ctx, a);
-    }
-    c || this.reg.delete(a);
-  }
-  this.db && (this.commit_task.push({del:a}), this.T && fb(this));
-  this.cache && this.cache.remove(a);
-  return this;
-};
-function kb(a, c) {
-  let b = 0;
-  if (a.constructor === Array) {
-    for (let e = 0, d, f; e < a.length; e++) {
-      if ((d = a[e]) && d.length) {
-        if (f = d.indexOf(c), 0 <= f) {
-          1 < d.length ? (d.splice(f, 1), b++) : delete a[e];
-          break;
-        } else {
-          b++;
-        }
-      }
-    }
-  } else {
-    for (let e of a.entries()) {
-      const d = e[0], f = kb(e[1], c);
-      f ? b += f : a.delete(d);
-    }
-  }
-  return b;
-}
 ;function N(a, c) {
   if (!this || this.constructor !== N) {
     return new N(a);
   }
   if (a) {
-    var b = E(a) ? a : a.preset;
-    b && (cb[b] || console.warn("Preset not found: " + b), a = Object.assign({}, cb[b], a));
+    var b = F(a) ? a : a.preset;
+    b && (eb[b] || console.warn("Preset not found: " + b), a = Object.assign({}, eb[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = E(a.encoder) ? bb[a.encoder] : a.encode || a.encoder || {};
+  const e = !0 === b ? {depth:1} : b || {}, d = F(a.encoder) ? bb[a.encoder] : a.encode || a.encoder || {};
   this.encoder = d.encode ? d : "object" === typeof d ? new ja(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -2093,26 +2095,26 @@ function kb(a, c) {
   this.commit_timer = null;
   this.priority = a.priority || 4;
 }
-t = N.prototype;
-t.mount = function(a) {
+v = N.prototype;
+v.mount = function(a) {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return a.mount(this);
 };
-t.commit = function(a, c) {
+v.commit = function(a, c) {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.commit(this, a, c);
 };
-t.destroy = function() {
+v.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function fb(a) {
+function db(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
   }, 1));
 }
-t.clear = function() {
+v.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
@@ -2120,40 +2122,26 @@ t.clear = function() {
   this.db && (this.commit_timer && clearTimeout(this.commit_timer), this.commit_timer = null, this.commit_task = [{clear:!0}]);
   return this;
 };
-t.append = function(a, c) {
+v.append = function(a, c) {
   return this.add(a, c, !0);
 };
-t.contain = function(a) {
+v.contain = function(a) {
   return this.db ? this.db.has(a) : this.reg.has(a);
 };
-t.update = function(a, c) {
+v.update = function(a, c) {
   const b = this, e = this.remove(a);
   return e && e.then ? e.then(() => b.add(a, c)) : this.add(a, c);
 };
-function lb(a) {
-  let c = 0;
-  if (a.constructor === Array) {
-    for (let b = 0, e; b < a.length; b++) {
-      (e = a[b]) && (c += e.length);
-    }
-  } else {
-    for (const b of a.entries()) {
-      const e = b[0], d = lb(b[1]);
-      d ? c += d : a.delete(e);
-    }
-  }
-  return c;
-}
-t.cleanup = function() {
+v.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  lb(this.map);
-  this.depth && lb(this.ctx);
+  cb(this.map);
+  this.depth && cb(this.ctx);
   return this;
 };
-t.searchCache = Va;
-t.export = function(a, c, b = 0, e = 0) {
+v.searchCache = Va;
+v.export = function(a, c, b = 0, e = 0) {
   let d, f;
   switch(e) {
     case 0:
@@ -2177,7 +2165,7 @@ t.export = function(a, c, b = 0, e = 0) {
   }
   return ya.call(this, a, c, d, f, b, e);
 };
-t.import = function(a, c) {
+v.import = function(a, c) {
   if (c) {
     switch("string" === typeof c && (c = JSON.parse(c)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), 3 === a.length && a.shift(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
@@ -2192,7 +2180,7 @@ t.import = function(a, c) {
     }
   }
 };
-t.serialize = function(a = !0) {
+v.serialize = function(a = !0) {
   let c = "", b = "", e = "";
   if (this.reg.size) {
     let f;
@@ -2214,10 +2202,10 @@ t.serialize = function(a = !0) {
   return a ? "function inject(index){" + c + b + e + "}" : c + b + e;
 };
 la(N.prototype);
-const mb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), nb = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
-function ob(a, c = {}) {
+const lb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), mb = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
+function nb(a, c = {}) {
   if (!this) {
-    return new ob(a, c);
+    return new nb(a, c);
   }
   "object" === typeof a && (c = a, a = a.name);
   a || console.info("Default storage space was used, because a name was not passed.");
@@ -2228,15 +2216,15 @@ function ob(a, c = {}) {
   this.db = null;
   this.h = {};
 }
-t = ob.prototype;
-t.mount = function(a) {
+v = nb.prototype;
+v.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
   }
   a.db = this;
   return this.open();
 };
-t.open = function() {
+v.open = function() {
   if (this.db) {
     return this.db;
   }
@@ -2244,11 +2232,11 @@ t.open = function() {
   navigator.storage && navigator.storage.persist();
   Y[a.id] || (Y[a.id] = []);
   Y[a.id].push(a.field);
-  const c = mb.open(a.id, 1);
+  const c = lb.open(a.id, 1);
   c.onupgradeneeded = function() {
     const b = a.db = this.result;
-    for (let e = 0, d; e < nb.length; e++) {
-      d = nb[e];
+    for (let e = 0, d; e < mb.length; e++) {
+      d = mb[e];
       for (let f = 0, g; f < Y[a.id].length; f++) {
         g = Y[a.id][f], b.objectStoreNames.contains(d + ("reg" !== d ? g ? ":" + g : "" : "")) || b.createObjectStore(d + ("reg" !== d ? g ? ":" + g : "" : ""));
       }
@@ -2261,18 +2249,18 @@ t.open = function() {
     };
   });
 };
-t.close = function() {
+v.close = function() {
   this.db && this.db.close();
   this.db = null;
 };
-t.destroy = function() {
-  const a = mb.deleteDatabase(this.id);
+v.destroy = function() {
+  const a = lb.deleteDatabase(this.id);
   return Z(a);
 };
-t.clear = function() {
+v.clear = function() {
   const a = [];
-  for (let b = 0, e; b < nb.length; b++) {
-    e = nb[b];
+  for (let b = 0, e; b < mb.length; b++) {
+    e = mb[b];
     for (let d = 0, f; d < Y[this.id].length; d++) {
       f = Y[this.id][d], a.push(e + ("reg" !== e ? f ? ":" + f : "" : ""));
     }
@@ -2283,7 +2271,7 @@ t.clear = function() {
   }
   return Z(c);
 };
-t.get = function(a, c, b = 0, e = 0, d = !0, f = !1) {
+v.get = function(a, c, b = 0, e = 0, d = !0, f = !1) {
   a = this.db.transaction((c ? "ctx" : "map") + (this.field ? ":" + this.field : ""), "readonly").objectStore((c ? "ctx" : "map") + (this.field ? ":" + this.field : "")).get(c ? c + ":" + a : a);
   const g = this;
   return Z(a).then(function(k) {
@@ -2316,7 +2304,7 @@ t.get = function(a, c, b = 0, e = 0, d = !0, f = !1) {
     return k;
   });
 };
-t.tag = function(a, c = 0, b = 0, e = !1) {
+v.tag = function(a, c = 0, b = 0, e = !1) {
   a = this.db.transaction("tag" + (this.field ? ":" + this.field : ""), "readonly").objectStore("tag" + (this.field ? ":" + this.field : "")).get(a);
   const d = this;
   return Z(a).then(function(f) {
@@ -2330,7 +2318,7 @@ t.tag = function(a, c = 0, b = 0, e = !1) {
     return e ? d.enrich(f) : f;
   });
 };
-t.enrich = function(a) {
+v.enrich = function(a) {
   "object" !== typeof a && (a = [a]);
   const c = this.db.transaction("reg", "readonly").objectStore("reg"), b = [];
   for (let e = 0; e < a.length; e++) {
@@ -2343,16 +2331,16 @@ t.enrich = function(a) {
     return e;
   });
 };
-t.has = function(a) {
+v.has = function(a) {
   a = this.db.transaction("reg", "readonly").objectStore("reg").getKey(a);
   return Z(a).then(function(c) {
     return !!c;
   });
 };
-t.search = null;
-t.info = function() {
+v.search = null;
+v.info = function() {
 };
-t.transaction = function(a, c, b) {
+v.transaction = function(a, c, b) {
   a += "reg" !== a ? this.field ? ":" + this.field : "" : "";
   let e = this.h[a + ":" + c];
   if (e) {
@@ -2367,7 +2355,7 @@ t.transaction = function(a, c, b) {
     return f;
   });
 };
-t.commit = async function(a, c, b) {
+v.commit = async function(a, c, b) {
   if (c) {
     await this.clear(), a.commit_task = [];
   } else {
@@ -2459,7 +2447,7 @@ t.commit = async function(a, c, b) {
     }
   }), a.map.clear(), a.ctx.clear(), a.tag && a.tag.clear(), a.store && a.store.clear(), a.document || a.reg.clear());
 };
-function pb(a, c, b) {
+function ob(a, c, b) {
   const e = a.value;
   let d, f = 0;
   for (let g = 0, k; g < e.length; g++) {
@@ -2483,22 +2471,22 @@ function pb(a, c, b) {
   f ? d && a.update(e) : a.delete();
   a.continue();
 }
-t.remove = function(a) {
+v.remove = function(a) {
   "object" !== typeof a && (a = [a]);
   return Promise.all([this.transaction("map", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && pb(b, a);
+      b && ob(b, a);
     };
   }), this.transaction("ctx", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && pb(b, a);
+      b && ob(b, a);
     };
   }), this.transaction("tag", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && pb(b, a, !0);
+      b && ob(b, a, !0);
     };
   }), this.transaction("reg", "readwrite", function(c) {
     for (let b = 0; b < a.length; b++) {
@@ -2517,9 +2505,9 @@ function Z(a, c) {
     a = null;
   });
 }
-;const qb = {Index:N, Charset:bb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:ob, Language:{}}, rb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
-let tb;
-(tb = rb.define) && tb.amd ? tb([], function() {
-  return qb;
-}) : "object" === typeof rb.exports ? rb.exports = qb : rb.FlexSearch = qb;
+;const pb = {Index:N, Charset:bb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:nb, Language:{}}, qb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
+let sb;
+(sb = qb.define) && sb.amd ? sb([], function() {
+  return pb;
+}) : "object" === typeof qb.exports ? qb.exports = pb : qb.FlexSearch = pb;
 }(this||self));
diff --git a/dist/flexsearch.bundle.min.js b/dist/flexsearch.bundle.min.js
index 2eed83a..51df6b6 100644
--- a/dist/flexsearch.bundle.min.js
+++ b/dist/flexsearch.bundle.min.js
@@ -1,95 +1,94 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle)
+ * FlexSearch.js v0.8.149 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var t;function z(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(h){return a(b(h))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function B(){return Object.create(null)}function E(a){return"string"===typeof a}
-function I(a){return"object"===typeof a}function aa(a){const c=[];for(const b of a.keys())c.push(b);return c}function J(a,c){if(E(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function ba(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ca=/[^\p{L}\p{N}]+/u,da=/(\d{3})/g,ea=/(\D)(\d{3})/g,fa=/(\d{3})(\D)/g,ha=/[\u0300-\u036f]/g;function ia(a={}){if(!this||this.constructor!==ia)return new ia(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}t=ia.prototype;
-t.assign=function(a){this.normalize=z(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
-this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,ca)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:z(b&&new Set(b),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=z((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=z((b=a.stemmer)&&new Map(b),
-null,this.stemmer);this.replacer=z(a.replacer,null,this.replacer);this.minlength=z(a.minlength,1,this.minlength);this.maxlength=z(a.maxlength,0,this.maxlength);this.rtl=z(a.rtl,!1,this.rtl);if(this.cache=b=z(a.cache,!0,this.cache))this.H=null,this.S="number"===typeof b?b:2E5,this.B=new Map,this.G=new Map,this.L=this.K=128;this.h="";this.M=null;this.A="";this.N=null;if(this.matcher)for(const d of this.matcher.keys())this.h+=(this.h?"|":"")+d;if(this.stemmer)for(const d of this.stemmer.keys())this.A+=
-(this.A?"|":"")+d;return this};t.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.A+=(this.A?"|":"")+a;this.N=null;this.cache&&K(this);return this};t.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&K(this);return this};
-t.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&K(this);return this};t.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&K(this);return this};
-t.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&K(this);return this};
-t.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.B.has(a))return this.B.get(a)}else this.H=setTimeout(K,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=ha?a.normalize("NFKD").replace(ha,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(ea,"$1 $2").replace(fa,"$1 $2").replace(da,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
-[],e=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,h;f<e.length;f++)if((g=h=e[f])&&!(g.length<this.minlength))if(c)b.push(g);else if(!this.filter||("function"===typeof this.filter?this.filter(g):!this.filter.has(g))){if(this.cache&&g.length<=this.L)if(this.H){var d=this.G.get(g);if(d||""===d){d&&b.push(d);continue}}else this.H=setTimeout(K,50,this);this.stemmer&&2<g.length&&(this.N||(this.N=new RegExp("(?!^)("+this.A+")$")),d=g,g=g.replace(this.N,k=>this.stemmer.get(k)),d!==g&&this.filter&&
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+function H(a){return"object"===typeof a}function aa(a){const b=[];for(const c of a.keys())b.push(c);return b}function I(a,b){if(F(b))a=a[b];else for(let c=0;a&&c<b.length;c++)a=a[b[c]];return a}function ba(a){let b=0;for(let c=0,e;c<a.length;c++)(e=a[c])&&b<e.length&&(b=e.length);return b};const ca=/[^\p{L}\p{N}]+/u,da=/(\d{3})/g,ea=/(\D)(\d{3})/g,fa=/(\d{3})(\D)/g,ha=/[\u0300-\u036f]/g;function ia(a={}){if(!this||this.constructor!==ia)return new ia(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}u=ia.prototype;
+u.assign=function(a){this.normalize=z(a.normalize,!0,this.normalize);let b=a.include,c=b||a.exclude||a.split,e;if(c||""===c){if("object"===typeof c&&c.constructor!==RegExp){let d="";e=!b;b||(d+="\\p{Z}");c.letter&&(d+="\\p{L}");c.number&&(d+="\\p{N}",e=!!b);c.symbol&&(d+="\\p{S}");c.punctuation&&(d+="\\p{P}");c.control&&(d+="\\p{C}");if(c=c.char)d+="object"===typeof c?c.join(""):c;try{this.split=new RegExp("["+(b?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=c,e=!1===c||2>"a1a".split(c).length;
+this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,ca)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);c=a.filter;this.filter="function"===typeof c?c:z(c&&new Set(c),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((c=a.matcher)&&new Map(c),null,this.matcher);this.mapper=z((c=a.mapper)&&new Map(c),null,this.mapper);this.stemmer=z((c=a.stemmer)&&new Map(c),
+null,this.stemmer);this.replacer=z(a.replacer,null,this.replacer);this.minlength=z(a.minlength,1,this.minlength);this.maxlength=z(a.maxlength,0,this.maxlength);this.rtl=z(a.rtl,!1,this.rtl);if(this.cache=c=z(a.cache,!0,this.cache))this.H=null,this.S="number"===typeof c?c:2E5,this.B=new Map,this.G=new Map,this.L=this.K=128;this.h="";this.M=null;this.A="";this.N=null;if(this.matcher)for(const d of this.matcher.keys())this.h+=(this.h?"|":"")+d;if(this.stemmer)for(const d of this.stemmer.keys())this.A+=
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+u.addMapper=function(a,b){if("object"===typeof a)return this.addReplacer(a,b);if(1<a.length)return this.addMatcher(a,b);this.mapper||(this.mapper=new Map);this.mapper.set(a,b);this.cache&&J(this);return this};u.addMatcher=function(a,b){if("object"===typeof a)return this.addReplacer(a,b);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,b);this.matcher||(this.matcher=new Map);this.matcher.set(a,b);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&J(this);return this};
+u.addReplacer=function(a,b){if("string"===typeof a)return this.addMatcher(a,b);this.replacer||(this.replacer=[]);this.replacer.push(a,b);this.cache&&J(this);return this};
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+u.import=function(a,b){if(b)switch("string"===typeof b&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=xa(b,this.reg);break;case "map":this.map=ta(b,this.map);break;case "ctx":this.ctx=va(b,this.ctx)}};
+u.serialize=function(a=!0){let b="",c="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),b+=(b?",":"")+("string"===f?'"'+d+'"':d);b="index.reg=new Set(["+b+"]);";c=za(this.map,f);c="index.map=new Map(["+c+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+b+c+e+"}":b+c+e};la(M.prototype);const lb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),mb=["map","ctx","tag","reg","cfg"],Y=B();
+function nb(a,b={}){if(!this)return new nb(a,b);"object"===typeof a&&(b=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=b.field?b.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=b.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}u=nb.prototype;u.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+u.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const b=lb.open(a.id,1);b.onupgradeneeded=function(){const c=a.db=this.result;for(let e=0,d;e<mb.length;e++){d=mb[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],c.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||c.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(b,function(c){a.db=c;a.db.onversionchange=function(){a.close()}})};
+u.close=function(){this.db&&this.db.close();this.db=null};u.destroy=function(){const a=lb.deleteDatabase(this.id);return Z(a)};u.clear=function(){const a=[];for(let c=0,e;c<mb.length;c++){e=mb[c];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const b=this.db.transaction(a,"readwrite");for(let c=0;c<a.length;c++)b.objectStore(a[c]).clear();return Z(b)};
+u.get=function(a,b,c=0,e=0,d=!0,f=!1){a=this.db.transaction((b?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((b?"ctx":"map")+(this.field?":"+this.field:"")).get(b?b+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(d){if(!c&&!e&&1===h.length)return h[0];for(let l=0,n;l<h.length;l++)if((n=h[l])&&n.length){if(e>=n.length){e-=n.length;continue}const m=c?e+Math.min(n.length-e,c):n.length;for(let q=e;q<m;q++)k.push(n[q]);e=0;if(k.length===c)break}return f?
+g.enrich(k):k}return h})};u.tag=function(a,b=0,c=0,e=!1){a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);const d=this;return Z(a).then(function(f){if(!f||!f.length||c>=f.length)return[];if(!b&&!c)return f;f=f.slice(c,c+b);return e?d.enrich(f):f})};
+u.enrich=function(a){"object"!==typeof a&&(a=[a]);const b=this.db.transaction("reg","readonly").objectStore("reg"),c=[];for(let e=0;e<a.length;e++)c[e]=Z(b.get(a[e]));return Promise.all(c).then(function(e){for(let d=0;d<e.length;d++)e[d]={id:a[d],doc:e[d]?JSON.parse(e[d]):null};return e})};u.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(b){return!!b})};u.search=null;u.info=function(){};
+u.transaction=function(a,b,c){a+="reg"!==a?this.field?":"+this.field:"":"";let e=this.h[a+":"+b];if(e)return c.call(this,e);let d=this.db.transaction(a,b);this.h[a+":"+b]=e=d.objectStore(a);const f=c.call(this,e);this.h[a+":"+b]=null;return Z(d).finally(function(){d=e=null;return f})};
+u.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let e=a.commit_task;a.commit_task=[];for(let d=0,f;d<e.length;d++)if(f=e[d],f.clear){await this.clear();b=!0;break}else e[d]=f.del;b||(c||(e=e.concat(aa(a.reg))),e.length&&await this.remove(e))}a.reg.size&&(await this.transaction("map","readwrite",function(e){for(const d of a.map){const f=d[0],g=d[1];g.length&&(b?e.put(g,f):e.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
+for(let n=0,m,q;n<l;n++)if((q=g[n])&&q.length){if((m=h[n])&&m.length)for(k=0;k<q.length;k++)m.push(q[k]);else h[n]=q;k=1}}else h=g,k=1;k&&e.put(h,f)})}}),await this.transaction("ctx","readwrite",function(e){for(const d of a.ctx){const f=d[0],g=d[1];for(const h of g){const k=h[0],l=h[1];l.length&&(b?e.put(l,f+":"+k):e.get(f+":"+k).onsuccess=function(){let n=this.result;var m;if(n&&n.length){const q=Math.max(n.length,l.length);for(let p=0,r,t;p<q;p++)if((t=l[p])&&t.length){if((r=n[p])&&r.length)for(m=
+0;m<t.length;m++)r.push(t[m]);else n[p]=t;m=1}}else n=l,m=1;m&&e.put(n,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(e){for(const d of a.store){const f=d[0],g=d[1];e.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(e){for(const d of a.reg.keys())e.put(1,d)}),a.tag&&await this.transaction("tag","readwrite",function(e){for(const d of a.tag){const f=d[0],g=d[1];g.length&&(e.get(f).onsuccess=function(){let h=this.result;
+h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function ob(a,b,c){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=c?e:e[g]){for(let k=0,l,n;k<b.length;k++)if(n=b[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(c)break}f?d&&a.update(e):a.delete();a.continue()}
+u.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&ob(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&ob(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&ob(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(let c=0;c<a.length;c++)b.delete(a[c])})])};
+function Z(a,b){return new Promise((c,e)=>{a.onsuccess=a.oncomplete=function(){b&&b(this.result);b=null;c(this.result)};a.onerror=a.onblocked=e;a=null})};const pb={Index:M,Charset:bb,Encoder:ia,Document:U,Worker:P,Resolver:W,IndexedDB:nb,Language:{}},rb="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let sb;(sb=rb.define)&&sb.amd?sb([],function(){return pb}):"object"===typeof rb.exports?rb.exports=pb:rb.FlexSearch=pb;}(this||self));
diff --git a/dist/flexsearch.bundle.module.debug.js b/dist/flexsearch.bundle.module.debug.js
index d542f4c..66ddbbb 100644
--- a/dist/flexsearch.bundle.module.debug.js
+++ b/dist/flexsearch.bundle.module.debug.js
@@ -1,11 +1,11 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle/Module/Debug)
+ * FlexSearch.js v0.8.149 (Bundle/Module/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var t;
+var v;
 function z(a, c, b) {
   const e = typeof b, d = typeof a;
   if ("undefined" !== e) {
@@ -46,10 +46,10 @@ function z(a, c, b) {
 function B() {
   return Object.create(null);
 }
-function E(a) {
+function F(a) {
   return "string" === typeof a;
 }
-function I(a) {
+function H(a) {
   return "object" === typeof a;
 }
 function aa(a) {
@@ -60,7 +60,7 @@ function aa(a) {
   return c;
 }
 function ba(a, c) {
-  if (E(c)) {
+  if (F(c)) {
     a = a[c];
   } else {
     for (let b = 0; a && b < c.length; b++) {
@@ -89,8 +89,8 @@ function ja(a = {}) {
     this.assign(a);
   }
 }
-t = ja.prototype;
-t.assign = function(a) {
+v = ja.prototype;
+v.assign = function(a) {
   this.normalize = z(a.normalize, !0, this.normalize);
   let c = a.include, b = c || a.exclude || a.split, e;
   if (b || "" === b) {
@@ -154,20 +154,20 @@ t.assign = function(a) {
   }
   return this;
 };
-t.addStemmer = function(a, c) {
+v.addStemmer = function(a, c) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, c);
   this.A += (this.A ? "|" : "") + a;
   this.N = null;
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addFilter = function(a) {
+v.addFilter = function(a) {
   "function" === typeof a ? this.filter = a : (this.filter || (this.filter = new Set()), this.filter.add(a));
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addMapper = function(a, c) {
+v.addMapper = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -176,10 +176,10 @@ t.addMapper = function(a, c) {
   }
   this.mapper || (this.mapper = new Map());
   this.mapper.set(a, c);
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addMatcher = function(a, c) {
+v.addMatcher = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -190,26 +190,26 @@ t.addMatcher = function(a, c) {
   this.matcher.set(a, c);
   this.h += (this.h ? "|" : "") + a;
   this.M = null;
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.addReplacer = function(a, c) {
+v.addReplacer = function(a, c) {
   if ("string" === typeof a) {
     return this.addMatcher(a, c);
   }
   this.replacer || (this.replacer = []);
   this.replacer.push(a, c);
-  this.cache && J(this);
+  this.cache && I(this);
   return this;
 };
-t.encode = function(a) {
+v.encode = function(a) {
   if (this.cache && a.length <= this.K) {
     if (this.H) {
       if (this.B.has(a)) {
         return this.B.get(a);
       }
     } else {
-      this.H = setTimeout(J, 50, this);
+      this.H = setTimeout(I, 50, this);
     }
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = ia ? a.normalize("NFKD").replace(ia, "").toLowerCase() : a.toLowerCase());
@@ -231,7 +231,7 @@ t.encode = function(a) {
                 continue;
               }
             } else {
-              this.H = setTimeout(J, 50, this);
+              this.H = setTimeout(I, 50, this);
             }
           }
           this.stemmer && 2 < g.length && (this.N || (this.N = new RegExp("(?!^)(" + this.A + ")$")), d = g, g = g.replace(this.N, h => this.stemmer.get(h)), d !== g && this.filter && g.length >= this.minlength && ("function" === typeof this.filter ? !this.filter(g) : this.filter.has(g)) && (g = ""));
@@ -258,12 +258,12 @@ t.encode = function(a) {
   this.cache && a.length <= this.K && (this.B.set(a, b), this.B.size > this.S && (this.B.clear(), this.K = this.K / 1.1 | 0));
   return b;
 };
-function J(a) {
+function I(a) {
   a.H = null;
   a.B.clear();
   a.G.clear();
 }
-;let K, M;
+;let J, M;
 async function ka(a) {
   a = a.data;
   var c = a.task;
@@ -272,7 +272,7 @@ async function ka(a) {
   switch(c) {
     case "init":
       M = a.options || {};
-      (c = a.factory) ? (Function("return " + c)()(self), K = new self.FlexSearch.Index(M), delete self.FlexSearch) : K = new N(M);
+      (c = a.factory) ? (Function("return " + c)()(self), J = new self.FlexSearch.Index(M), delete self.FlexSearch) : J = new N(M);
       postMessage({id:b});
       break;
     default:
@@ -287,9 +287,9 @@ async function ka(a) {
         if (!M.import || "function" !== typeof M.import) {
           throw Error('Either no extern configuration provided for the Worker-Index or no method was defined on the config property "import".');
         }
-        e[0] && (a = await M.import.call(K, e[0]), K.import(e[0], a));
+        e[0] && (a = await M.import.call(J, e[0]), J.import(e[0], a));
       } else {
-        (d = e && K[c].apply(K, e)) && d.then && (d = await d);
+        (d = e && J[c].apply(J, e)) && d.then && (d = await d);
       }
       postMessage("search" === c ? {id:b, msg:d} : {id:b});
   }
@@ -597,35 +597,35 @@ T.prototype.add = function(a) {
   let b = this.index[c];
   b ? (c = b.size, b.add(a), (c -= b.size) && this.size++) : (this.index[c] = b = new Set([a]), this.h.push(b), this.size++);
 };
-t = S.prototype;
-t.has = T.prototype.has = function(a) {
+v = S.prototype;
+v.has = T.prototype.has = function(a) {
   const c = this.index[this.B(a)];
   return c && c.has(a);
 };
-t.delete = T.prototype.delete = function(a) {
+v.delete = T.prototype.delete = function(a) {
   const c = this.index[this.B(a)];
   c && c.delete(a) && this.size--;
 };
-t.clear = T.prototype.clear = function() {
+v.clear = T.prototype.clear = function() {
   this.index = B();
   this.h = [];
   this.size = 0;
 };
-t.values = T.prototype.values = function*() {
+v.values = T.prototype.values = function*() {
   for (let a = 0; a < this.h.length; a++) {
     for (let c of this.h[a].values()) {
       yield c;
     }
   }
 };
-t.keys = T.prototype.keys = function*() {
+v.keys = T.prototype.keys = function*() {
   for (let a = 0; a < this.h.length; a++) {
     for (let c of this.h[a].keys()) {
       yield c;
     }
   }
 };
-t.entries = T.prototype.entries = function*() {
+v.entries = T.prototype.entries = function*() {
   for (let a = 0; a < this.h.length; a++) {
     for (let c of this.h[a].entries()) {
       yield c;
@@ -660,7 +660,7 @@ function Ba(a) {
   return b;
 }
 ;U.prototype.add = function(a, c, b) {
-  I(a) && (c = a, a = ba(c, this.key));
+  H(a) && (c = a, a = ba(c, this.key));
   if (c && (a || 0 === a)) {
     if (!b && this.reg.has(a)) {
       return this.update(a, c);
@@ -673,7 +673,7 @@ function Ba(a) {
         d && e.add(a, d, !1, !0);
       } else {
         if (d = h.I, !d || d(c)) {
-          h.constructor === String ? h = ["" + h] : E(h) && (h = [h]), Da(c, h, this.J, 0, e, a, h[0], b);
+          h.constructor === String ? h = ["" + h] : F(h) && (h = [h]), Da(c, h, this.J, 0, e, a, h[0], b);
         }
       }
     }
@@ -695,7 +695,7 @@ function Ba(a) {
           f = ba(c, f);
         }
         if (d && f) {
-          E(f) && (f = [f]);
+          F(f) && (f = [f]);
           for (let h = 0, l, n; h < f.length; h++) {
             if (l = f[h], !k[l] && (k[l] = 1, (g = d.get(l)) ? n = g : d.set(l, n = []), !b || !n.includes(a))) {
               if (n.length === 2 ** 31 - 1) {
@@ -732,7 +732,7 @@ function Ba(a) {
               continue;
             }
             l = [l.V];
-          } else if (E(l) || l.constructor === String) {
+          } else if (F(l) || l.constructor === String) {
             k[l] = c[l];
             continue;
           }
@@ -790,19 +790,19 @@ function Da(a, c, b, e, d, f, g, k) {
   let h = [], l, n;
   l = B();
   for (let m = 0, q, p, r, u; m < c; m++) {
-    for (let v = 0; v < k; v++) {
-      if (r = a[v], m < r.length && (q = r[m])) {
+    for (let t = 0; t < k; t++) {
+      if (r = a[t], m < r.length && (q = r[m])) {
         for (let w = 0; w < q.length; w++) {
           p = q[w];
           (n = l[p]) ? l[p]++ : (n = 0, l[p] = 1);
           u = h[n] || (h[n] = []);
           if (!g) {
-            let y = m + (v || !d ? 0 : f || 0);
+            let y = m + (t || !d ? 0 : f || 0);
             u = u[y] || (u[y] = []);
           }
           u.push(p);
           if (g && b && n === k - 1 && u.length - e === b) {
-            return u;
+            return e ? u.slice(e) : u;
           }
         }
       }
@@ -1213,7 +1213,7 @@ W.prototype.resolve = function(a, c, b) {
 };
 B();
 U.prototype.search = function(a, c, b, e) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   let d = [];
   var f = [], g;
   let k;
@@ -1232,7 +1232,7 @@ U.prototype.search = function(a, c, b, e) {
     m = !1 !== b.resolve;
     if (!m && !p) {
       if (h = h || this.field) {
-        E(h) ? p = h : (h.constructor === Array && 1 === h.length && (h = h[0]), p = h.field || h.index);
+        F(h) ? p = h : (h.constructor === Array && 1 === h.length && (h = h[0]), p = h.field || h.index);
       }
       if (!p) {
         throw Error("Apply resolver on document search requires either the option 'pluck' to be set or just select a single field name in your query.");
@@ -1245,53 +1245,53 @@ U.prototype.search = function(a, c, b, e) {
     c || (c = 100);
     if (l && (!this.db || !e)) {
       l.constructor !== Array && (l = [l]);
-      var v = [];
+      var t = [];
       for (let A = 0, x; A < l.length; A++) {
         x = l[A];
-        if (E(x)) {
+        if (F(x)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
         if (x.field && x.tag) {
           var w = x.tag;
           if (w.constructor === Array) {
             for (var y = 0; y < w.length; y++) {
-              v.push(x.field, w[y]);
+              t.push(x.field, w[y]);
             }
           } else {
-            v.push(x.field, w);
+            t.push(x.field, w);
           }
         } else {
           w = Object.keys(x);
-          for (let D = 0, H, C; D < w.length; D++) {
-            if (H = w[D], C = x[H], C.constructor === Array) {
-              for (y = 0; y < C.length; y++) {
-                v.push(H, C[y]);
+          for (let C = 0, G, D; C < w.length; C++) {
+            if (G = w[C], D = x[G], D.constructor === Array) {
+              for (y = 0; y < D.length; y++) {
+                t.push(G, D[y]);
               }
             } else {
-              v.push(H, C);
+              t.push(G, D);
             }
           }
         }
       }
-      if (!v.length) {
+      if (!t.length) {
         throw Error("Your tag definition within the search options is probably wrong. No valid tags found.");
       }
-      l = v;
+      l = t;
       if (!a) {
         m = [];
-        if (v.length) {
-          for (f = 0; f < v.length; f += 2) {
+        if (t.length) {
+          for (f = 0; f < t.length; f += 2) {
             if (this.db) {
-              p = this.index.get(v[f]);
+              p = this.index.get(t[f]);
               if (!p) {
-                console.warn("Tag '" + v[f] + ":" + v[f + 1] + "' will be skipped because there is no field '" + v[f] + "'.");
+                console.warn("Tag '" + t[f] + ":" + t[f + 1] + "' will be skipped because there is no field '" + t[f] + "'.");
                 continue;
               }
-              m.push(p = p.db.tag(v[f + 1], c, u, g));
+              m.push(p = p.db.tag(t[f + 1], c, u, g));
             } else {
-              p = Qa.call(this, v[f], v[f + 1], c, u, g);
+              p = Qa.call(this, t[f], t[f + 1], c, u, g);
             }
-            d.push({field:v[f], tag:v[f + 1], result:p});
+            d.push({field:t[f], tag:t[f + 1], result:p});
           }
         }
         return m.length ? Promise.all(m).then(function(A) {
@@ -1305,34 +1305,34 @@ U.prototype.search = function(a, c, b, e) {
     h && h.constructor !== Array && (h = [h]);
   }
   h || (h = this.field);
-  v = !e && (this.worker || this.db) && [];
-  let F;
-  for (let A = 0, x, D, H; A < h.length; A++) {
-    D = h[A];
+  t = !e && (this.worker || this.db) && [];
+  let E;
+  for (let A = 0, x, C, G; A < h.length; A++) {
+    C = h[A];
     if (this.db && this.tag && !this.D[A]) {
       continue;
     }
-    let C;
-    E(D) || (C = D, D = C.field, a = C.query || a, c = C.limit || c, u = C.offset || u, r = C.suggest || r, g = this.store && (C.enrich || g));
+    let D;
+    F(C) || (D = C, C = D.field, a = D.query || a, c = D.limit || c, u = D.offset || u, r = D.suggest || r, g = this.store && (D.enrich || g));
     if (e) {
       x = e[A];
     } else {
-      if (w = C || b, y = this.index.get(D), l && (this.db && (w.tag = l, F = y.db.support_tag_search, w.field = h), F || (w.enrich = !1)), v) {
-        v[A] = y.search(a, c, w);
+      if (w = D || b, y = this.index.get(C), l && (this.db && (w.tag = l, E = y.db.support_tag_search, w.field = h), E || (w.enrich = !1)), t) {
+        t[A] = y.search(a, c, w);
         w && g && (w.enrich = g);
         continue;
       } else {
         x = y.search(a, c, w), w && g && (w.enrich = g);
       }
     }
-    H = x && (m ? x.length : x.result.length);
-    if (l && H) {
+    G = x && (m ? x.length : x.result.length);
+    if (l && G) {
       w = [];
       y = 0;
       if (this.db && e) {
-        if (!F) {
-          for (let G = h.length; G < e.length; G++) {
-            let L = e[G];
+        if (!E) {
+          for (let K = h.length; K < e.length; K++) {
+            let L = e[K];
             if (L && L.length) {
               y++, w.push(L);
             } else if (!r) {
@@ -1341,16 +1341,16 @@ U.prototype.search = function(a, c, b, e) {
           }
         }
       } else {
-        for (let G = 0, L, pb; G < l.length; G += 2) {
-          L = this.tag.get(l[G]);
+        for (let K = 0, L, ob; K < l.length; K += 2) {
+          L = this.tag.get(l[K]);
           if (!L) {
-            if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), r) {
+            if (console.warn("Tag '" + l[K] + ":" + l[K + 1] + "' will be skipped because there is no field '" + l[K] + "'."), r) {
               continue;
             } else {
               return m ? d : new W(d);
             }
           }
-          if (pb = (L = L && L.get(l[G + 1])) && L.length) {
+          if (ob = (L = L && L.get(l[K + 1])) && L.length) {
             y++, w.push(L);
           } else if (!r) {
             return m ? d : new W(d);
@@ -1359,21 +1359,21 @@ U.prototype.search = function(a, c, b, e) {
       }
       if (y) {
         x = Ha(x, w, m);
-        H = x.length;
-        if (!H && !r) {
+        G = x.length;
+        if (!G && !r) {
           return m ? x : new W(x);
         }
         y--;
       }
     }
-    if (H) {
-      f[n] = D, d.push(x), n++;
+    if (G) {
+      f[n] = C, d.push(x), n++;
     } else if (1 === h.length) {
       return m ? d : new W(d);
     }
   }
-  if (v) {
-    if (this.db && l && l.length && !F) {
+  if (t) {
+    if (this.db && l && l.length && !E) {
       for (g = 0; g < l.length; g += 2) {
         f = this.index.get(l[g]);
         if (!f) {
@@ -1383,11 +1383,11 @@ U.prototype.search = function(a, c, b, e) {
             return m ? d : new W(d);
           }
         }
-        v.push(f.db.tag(l[g + 1], c, u, !1));
+        t.push(f.db.tag(l[g + 1], c, u, !1));
       }
     }
     const A = this;
-    return Promise.all(v).then(function(x) {
+    return Promise.all(t).then(function(x) {
       return x.length ? A.search(a, c, b, x) : x;
     });
   }
@@ -1397,20 +1397,20 @@ U.prototype.search = function(a, c, b, e) {
   if (p && (!g || !this.store)) {
     return d[0];
   }
-  v = [];
+  t = [];
   for (u = 0; u < f.length; u++) {
     r = d[u];
-    g && r.length && "undefined" === typeof r[0].doc && (this.db ? v.push(r = this.index.get(this.field[0]).db.enrich(r)) : r = V.call(this, r));
+    g && r.length && "undefined" === typeof r[0].doc && (this.db ? t.push(r = this.index.get(this.field[0]).db.enrich(r)) : r = V.call(this, r));
     if (p) {
       return m ? r : new W(r);
     }
     d[u] = {field:f[u], result:r};
   }
-  if (g && this.db && v.length) {
+  if (g && this.db && t.length) {
     const A = this;
-    return Promise.all(v).then(function(x) {
-      for (let D = 0; D < x.length; D++) {
-        d[D].result = x[D];
+    return Promise.all(t).then(function(x) {
+      for (let C = 0; C < x.length; C++) {
+        d[C].result = x[C];
       }
       return k ? Ra(d, c) : q ? Sa(d, a, A.index, A.field, A.D, q) : d;
     });
@@ -1419,45 +1419,41 @@ U.prototype.search = function(a, c, b, e) {
 };
 function Sa(a, c, b, e, d, f) {
   let g, k, h;
-  for (let n = 0, m, q, p, r; n < a.length; n++) {
-    let u = a[n].result;
-    m = a[n].field;
-    p = b.get(m);
-    q = p.encoder;
-    h = p.tokenize;
-    r = d[e.indexOf(m)];
-    q !== g && (g = q, k = g.encode(c));
-    for (let v = 0; v < u.length; v++) {
-      let w = "";
-      var l = ba(u[v].doc, r);
-      let y = g.encode(l);
-      l = l.split(g.split);
-      for (let F = 0, A, x; F < y.length; F++) {
-        A = y[F];
-        x = l[F];
-        if (!A || !x) {
-          continue;
-        }
-        let D;
-        for (let H = 0, C; H < k.length; H++) {
-          if (C = k[H], "strict" === h) {
-            if (A === C) {
-              w += (w ? " " : "") + f.replace("$1", x);
-              D = !0;
-              break;
-            }
-          } else {
-            const G = A.indexOf(C);
-            if (-1 < G) {
-              w += (w ? " " : "") + x.substring(0, G) + f.replace("$1", x.substring(G, C.length)) + x.substring(G + C.length);
-              D = !0;
-              break;
+  for (let l = 0, n, m, q, p; l < a.length; l++) {
+    let r = a[l].result;
+    n = a[l].field;
+    q = b.get(n);
+    m = q.encoder;
+    h = q.tokenize;
+    p = d[e.indexOf(n)];
+    m !== g && (g = m, k = g.encode(c));
+    for (let u = 0; u < r.length; u++) {
+      let t = "", w = ba(r[u].doc, p).split(/\s+/);
+      for (let y = 0, E, A; y < w.length; y++) {
+        E = w[y];
+        A = g.encode(E).join(" ");
+        let x;
+        if (A && E) {
+          for (let C = 0, G; C < k.length; C++) {
+            if (G = k[C], "strict" === h) {
+              if (A === G) {
+                t += (t ? " " : "") + f.replace("$1", E);
+                x = !0;
+                break;
+              }
+            } else {
+              const D = A.indexOf(G);
+              if (-1 < D) {
+                t += (t ? " " : "") + E.substring(0, D) + f.replace("$1", E.substring(D, G.length)) + E.substring(D + G.length);
+                x = !0;
+                break;
+              }
             }
           }
         }
-        D || (w += (w ? " " : "") + l[F]);
+        x || (t += (t ? " " : "") + w[y]);
       }
-      u[v].highlight = w;
+      r[u].highlight = t;
     }
   }
   return a;
@@ -1563,8 +1559,8 @@ function V(a) {
     a.db && (this.fastupdate = !1, this.mount(a.db));
   }
 }
-t = U.prototype;
-t.mount = function(a) {
+v = U.prototype;
+v.mount = function(a) {
   if (this.worker) {
     throw Error("You can't use Worker-Indexes on a persistent model. That would be useless, since each of the persistent model acts like Worker-Index by default (Master/Slave).");
   }
@@ -1593,7 +1589,7 @@ t.mount = function(a) {
   this.db = !0;
   return Promise.all(b);
 };
-t.commit = async function(a, c) {
+v.commit = async function(a, c) {
   const b = [];
   for (const e of this.index.values()) {
     b.push(e.commit(a, c));
@@ -1601,7 +1597,7 @@ t.commit = async function(a, c) {
   await Promise.all(b);
   this.reg.clear();
 };
-t.destroy = function() {
+v.destroy = function() {
   const a = [];
   for (const c of this.index.values()) {
     a.push(c.destroy());
@@ -1611,11 +1607,11 @@ t.destroy = function() {
 function Ua(a, c) {
   const b = new Map();
   let e = c.index || c.field || c;
-  E(e) && (e = [e]);
+  F(e) && (e = [e]);
   for (let d = 0, f, g; d < e.length; d++) {
     f = e[d];
-    E(f) || (g = f, f = f.field);
-    g = I(g) ? Object.assign({}, a, g) : a;
+    F(f) || (g = f, f = f.field);
+    g = H(g) ? Object.assign({}, a, g) : a;
     if (this.worker) {
       const k = new P(g);
       b.set(f, k);
@@ -1626,7 +1622,7 @@ function Ua(a, c) {
   }
   if (this.C) {
     a = c.store;
-    E(a) && (a = [a]);
+    F(a) && (a = [a]);
     for (let d = 0, f, g; d < a.length; d++) {
       f = a[d], g = f.field || f, f.custom ? (this.C[d] = f.custom, f.custom.V = g) : (this.C[d] = Ta(g, this.J), f.filter && ("string" === typeof this.C[d] && (this.C[d] = new String(this.C[d])), this.C[d].I = f.filter));
     }
@@ -1642,14 +1638,14 @@ function Ta(a, c) {
   e < b.length && (b.length = e);
   return 1 < e ? b : b[0];
 }
-t.append = function(a, c) {
+v.append = function(a, c) {
   return this.add(a, c, !0);
 };
-t.update = function(a, c) {
+v.update = function(a, c) {
   return this.remove(a).add(a, c);
 };
-t.remove = function(a) {
-  I(a) && (a = ba(a, this.key));
+v.remove = function(a) {
+  H(a) && (a = ba(a, this.key));
   for (var c of this.index.values()) {
     c.remove(a, !0);
   }
@@ -1669,7 +1665,7 @@ t.remove = function(a) {
   this.cache && this.cache.remove(a);
   return this;
 };
-t.clear = function() {
+v.clear = function() {
   const a = [];
   for (const c of this.index.values()) {
     const b = c.clear();
@@ -1684,27 +1680,27 @@ t.clear = function() {
   this.cache && this.cache.clear();
   return a.length ? Promise.all(a) : this;
 };
-t.contain = function(a) {
+v.contain = function(a) {
   return this.db ? this.index.get(this.field[0]).db.has(a) : this.reg.has(a);
 };
-t.cleanup = function() {
+v.cleanup = function() {
   for (const a of this.index.values()) {
     a.cleanup();
   }
   return this;
 };
-t.get = function(a) {
+v.get = function(a) {
   return this.db ? this.index.get(this.field[0]).db.enrich(a).then(function(c) {
     return c[0] && c[0].doc || null;
   }) : this.store.get(a) || null;
 };
-t.set = function(a, c) {
+v.set = function(a, c) {
   "object" === typeof a && (c = a, a = ba(c, this.key));
   this.store.set(a, c);
   return this;
 };
-t.searchCache = Va;
-t.export = function(a, c, b = 0, e = 0) {
+v.searchCache = Va;
+v.export = function(a, c, b = 0, e = 0) {
   if (b < this.field.length) {
     const g = this.field[b];
     if ((c = this.index.get(g).export(a, g, b, e = 1)) && c.then) {
@@ -1737,7 +1733,7 @@ t.export = function(a, c, b = 0, e = 0) {
   }
   return ya.call(this, a, c, d, f, b, e);
 };
-t.import = function(a, c) {
+v.import = function(a, c) {
   var b = a.split(".");
   "json" === b[b.length - 1] && b.pop();
   const e = 2 < b.length ? b[0] : "";
@@ -1829,7 +1825,57 @@ var bb = {X:Wa, W:Xa, Y:Xa, LatinBalance:{dedupe:!0, mapper:Ya}, LatinAdvanced:{
     a[b] = e;
   }
 }}, LatinExact:Wa, LatinDefault:Xa, LatinSimple:Xa};
-const cb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+N.prototype.remove = function(a, c) {
+  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (b) {
+    if (this.fastupdate) {
+      for (let e = 0, d; e < b.length; e++) {
+        if (d = b[e]) {
+          if (2 > d.length) {
+            d.pop();
+          } else {
+            const f = d.indexOf(a);
+            f === b.length - 1 ? d.pop() : d.splice(f, 1);
+          }
+        }
+      }
+    } else {
+      cb(this.map, a), this.depth && cb(this.ctx, a);
+    }
+    c || this.reg.delete(a);
+  }
+  this.db && (this.commit_task.push({del:a}), this.T && db(this));
+  this.cache && this.cache.remove(a);
+  return this;
+};
+function cb(a, c) {
+  let b = 0;
+  var e = "undefined" === typeof c;
+  if (a.constructor === Array) {
+    for (let d = 0, f, g; d < a.length; d++) {
+      if ((f = a[d]) && f.length) {
+        if (e) {
+          b++;
+        } else {
+          if (g = f.indexOf(c), 0 <= g) {
+            1 < f.length ? (f.splice(g, 1), b++) : delete a[d];
+            break;
+          } else {
+            b++;
+          }
+        }
+      }
+    }
+  } else {
+    for (let d of a.entries()) {
+      e = d[0];
+      const f = cb(d[1], c);
+      f ? b += f : a.delete(e);
+    }
+  }
+  return b;
+}
+;const eb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 N.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -1842,16 +1888,16 @@ N.prototype.add = function(a, c, b, e) {
         let r = c[this.rtl ? e - 1 - p : p];
         var d = r.length;
         if (d && (m || !n[r])) {
-          var f = this.score ? this.score(c, r, p, null, 0) : db(q, e, p), g = "";
+          var f = this.score ? this.score(c, r, p, null, 0) : fb(q, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
-                for (let u = 0, v; u < d; u++) {
+                for (let u = 0, t; u < d; u++) {
                   for (f = d; f > u; f--) {
                     g = r.substring(u, f);
-                    v = this.rtl ? d - 1 - u : u;
-                    var k = this.score ? this.score(c, r, p, g, v) : db(q, e, p, d, v);
-                    eb(this, n, g, k, a, b);
+                    t = this.rtl ? d - 1 - u : u;
+                    var k = this.score ? this.score(c, r, p, g, t) : fb(q, e, p, d, t);
+                    gb(this, n, g, k, a, b);
                   }
                 }
                 break;
@@ -1861,25 +1907,25 @@ N.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = r[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, r, p, g, k) : db(q, e, p, d, k);
-                  eb(this, n, g, h, a, b);
+                  var h = this.score ? this.score(c, r, p, g, k) : fb(q, e, p, d, k);
+                  gb(this, n, g, h, a, b);
                 }
                 g = "";
               }
             case "forward":
               if (1 < d) {
                 for (k = 0; k < d; k++) {
-                  g += r[this.rtl ? d - 1 - k : k], eb(this, n, g, f, a, b);
+                  g += r[this.rtl ? d - 1 - k : k], gb(this, n, g, f, a, b);
                 }
                 break;
               }
             default:
-              if (eb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
+              if (gb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
                 for (d = B(), g = this.U, f = r, k = Math.min(m + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((r = c[this.rtl ? e - 1 - p - h : p + h]) && !d[r]) {
                     d[r] = 1;
-                    const u = this.score ? this.score(c, f, p, r, h - 1) : db(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), v = this.bidirectional && r > f;
-                    eb(this, l, v ? f : r, u, a, b, v ? r : f);
+                    const u = this.score ? this.score(c, f, p, r, h - 1) : fb(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), t = this.bidirectional && r > f;
+                    gb(this, l, t ? f : r, u, a, b, t ? r : f);
                   }
                 }
               }
@@ -1891,10 +1937,10 @@ N.prototype.add = function(a, c, b, e) {
       c = "";
     }
   }
-  this.db && (c || this.commit_task.push({del:a}), this.T && fb(this));
+  this.db && (c || this.commit_task.push({del:a}), this.T && db(this));
   return this;
 };
-function eb(a, c, b, e, d, f, g) {
+function gb(a, c, b, e, d, f, g) {
   let k = g ? a.ctx : a.map, h;
   if (!c[b] || g && !(h = c[b])[g]) {
     if (g ? (c = h || (c[b] = B()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = h = []), k = k[e] || (k[e] = []), !f || !k.includes(d)) {
@@ -1912,62 +1958,62 @@ function eb(a, c, b, e, d, f, g) {
     }
   }
 }
-function db(a, c, b, e, d) {
+function fb(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
 ;N.prototype.search = function(a, c, b) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   let e = [], d, f, g, k = 0, h, l, n, m, q;
   b ? (a = b.query || a, c = b.limit || c, k = b.offset || 0, f = b.context, g = b.suggest, q = (h = !1 !== b.resolve) && b.enrich, n = b.boost, m = b.resolution, l = this.db && b.tag) : h = this.resolve;
   let p = this.encoder.encode(a);
   d = p.length;
   c = c || (h ? 100 : 0);
   if (1 === d) {
-    return gb.call(this, p[0], "", c, k, h, q, l);
+    return hb.call(this, p[0], "", c, k, h, q, l);
   }
   f = this.depth && !1 !== f;
   if (2 === d && f && !g) {
-    return gb.call(this, p[1], p[0], c, k, h, q, l);
+    return hb.call(this, p[1], p[0], c, k, h, q, l);
   }
-  let r = B(), u = 0, v;
-  1 < d && f && (v = p[0], u = 1);
-  m || 0 === m || (m = v ? this.U : this.resolution);
+  let r = B(), u = 0, t;
+  1 < d && f && (t = p[0], u = 1);
+  m || 0 === m || (m = t ? this.U : this.resolution);
   if (this.db) {
     if (this.db.search && (a = this.db.search(this, p, c, k, g, h, q, l), !1 !== a)) {
       return a;
     }
     const w = this;
     return async function() {
-      for (let y, F; u < d; u++) {
-        if ((F = p[u]) && !r[F]) {
-          r[F] = 1;
-          y = await hb(w, F, v, 0, 0, !1, !1);
-          if (y = ib(y, e, g, m)) {
+      for (let y, E; u < d; u++) {
+        if ((E = p[u]) && !r[E]) {
+          r[E] = 1;
+          y = await ib(w, E, t, 0, 0, !1, !1);
+          if (y = jb(y, e, g, m)) {
             e = y;
             break;
           }
-          v && (g && y && e.length || (v = F));
+          t && (g && y && e.length || (t = E));
         }
-        g && v && u === d - 1 && !e.length && (m = w.resolution, v = "", u = -1, r = B());
+        g && t && u === d - 1 && !e.length && (m = w.resolution, t = "", u = -1, r = B());
       }
-      return jb(e, m, c, k, g, n, h);
+      return kb(e, m, c, k, g, n, h);
     }();
   }
   for (let w, y; u < d; u++) {
     if ((y = p[u]) && !r[y]) {
       r[y] = 1;
-      w = hb(this, y, v, 0, 0, !1, !1);
-      if (w = ib(w, e, g, m)) {
+      w = ib(this, y, t, 0, 0, !1, !1);
+      if (w = jb(w, e, g, m)) {
         e = w;
         break;
       }
-      v && (g && w && e.length || (v = y));
+      t && (g && w && e.length || (t = y));
     }
-    g && v && u === d - 1 && !e.length && (m = this.resolution, v = "", u = -1, r = B());
+    g && t && u === d - 1 && !e.length && (m = this.resolution, t = "", u = -1, r = B());
   }
-  return jb(e, m, c, k, g, n, h);
+  return kb(e, m, c, k, g, n, h);
 };
-function jb(a, c, b, e, d, f, g) {
+function kb(a, c, b, e, d, f, g) {
   let k = a.length, h = a;
   if (1 < k) {
     h = Fa(a, c, b, e, d, f, g);
@@ -1976,13 +2022,13 @@ function jb(a, c, b, e, d, f, g) {
   }
   return g ? h : new W(h);
 }
-function gb(a, c, b, e, d, f, g) {
-  a = hb(this, a, c, b, e, d, f, g);
+function hb(a, c, b, e, d, f, g) {
+  a = ib(this, a, c, b, e, d, f, g);
   return this.db ? a.then(function(k) {
     return d ? k || [] : new W(k);
   }) : a && a.length ? d ? Ia.call(this, a, b, e) : new W(a) : d ? [] : new W();
 }
-function ib(a, c, b, e) {
+function jb(a, c, b, e) {
   let d = [];
   if (a && a.length) {
     if (a.length <= e) {
@@ -2003,7 +2049,7 @@ function ib(a, c, b, e) {
     return d;
   }
 }
-function hb(a, c, b, e, d, f, g, k) {
+function ib(a, c, b, e, d, f, g, k) {
   let h;
   b && (h = a.bidirectional && c > b) && (h = b, b = c, c = h);
   if (a.db) {
@@ -2012,62 +2058,18 @@ function hb(a, c, b, e, d, f, g, k) {
   a = b ? (a = a.ctx.get(b)) && a.get(c) : a.map.get(c);
   return a;
 }
-;N.prototype.remove = function(a, c) {
-  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (b) {
-    if (this.fastupdate) {
-      for (let e = 0, d; e < b.length; e++) {
-        if (d = b[e]) {
-          if (2 > d.length) {
-            d.pop();
-          } else {
-            const f = d.indexOf(a);
-            f === b.length - 1 ? d.pop() : d.splice(f, 1);
-          }
-        }
-      }
-    } else {
-      kb(this.map, a), this.depth && kb(this.ctx, a);
-    }
-    c || this.reg.delete(a);
-  }
-  this.db && (this.commit_task.push({del:a}), this.T && fb(this));
-  this.cache && this.cache.remove(a);
-  return this;
-};
-function kb(a, c) {
-  let b = 0;
-  if (a.constructor === Array) {
-    for (let e = 0, d, f; e < a.length; e++) {
-      if ((d = a[e]) && d.length) {
-        if (f = d.indexOf(c), 0 <= f) {
-          1 < d.length ? (d.splice(f, 1), b++) : delete a[e];
-          break;
-        } else {
-          b++;
-        }
-      }
-    }
-  } else {
-    for (let e of a.entries()) {
-      const d = e[0], f = kb(e[1], c);
-      f ? b += f : a.delete(d);
-    }
-  }
-  return b;
-}
 ;function N(a, c) {
   if (!this || this.constructor !== N) {
     return new N(a);
   }
   if (a) {
-    var b = E(a) ? a : a.preset;
-    b && (cb[b] || console.warn("Preset not found: " + b), a = Object.assign({}, cb[b], a));
+    var b = F(a) ? a : a.preset;
+    b && (eb[b] || console.warn("Preset not found: " + b), a = Object.assign({}, eb[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = E(a.encoder) ? bb[a.encoder] : a.encode || a.encoder || {};
+  const e = !0 === b ? {depth:1} : b || {}, d = F(a.encoder) ? bb[a.encoder] : a.encode || a.encoder || {};
   this.encoder = d.encode ? d : "object" === typeof d ? new ja(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -2092,26 +2094,26 @@ function kb(a, c) {
   this.commit_timer = null;
   this.priority = a.priority || 4;
 }
-t = N.prototype;
-t.mount = function(a) {
+v = N.prototype;
+v.mount = function(a) {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return a.mount(this);
 };
-t.commit = function(a, c) {
+v.commit = function(a, c) {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.commit(this, a, c);
 };
-t.destroy = function() {
+v.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function fb(a) {
+function db(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
   }, 1));
 }
-t.clear = function() {
+v.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
@@ -2119,40 +2121,26 @@ t.clear = function() {
   this.db && (this.commit_timer && clearTimeout(this.commit_timer), this.commit_timer = null, this.commit_task = [{clear:!0}]);
   return this;
 };
-t.append = function(a, c) {
+v.append = function(a, c) {
   return this.add(a, c, !0);
 };
-t.contain = function(a) {
+v.contain = function(a) {
   return this.db ? this.db.has(a) : this.reg.has(a);
 };
-t.update = function(a, c) {
+v.update = function(a, c) {
   const b = this, e = this.remove(a);
   return e && e.then ? e.then(() => b.add(a, c)) : this.add(a, c);
 };
-function lb(a) {
-  let c = 0;
-  if (a.constructor === Array) {
-    for (let b = 0, e; b < a.length; b++) {
-      (e = a[b]) && (c += e.length);
-    }
-  } else {
-    for (const b of a.entries()) {
-      const e = b[0], d = lb(b[1]);
-      d ? c += d : a.delete(e);
-    }
-  }
-  return c;
-}
-t.cleanup = function() {
+v.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  lb(this.map);
-  this.depth && lb(this.ctx);
+  cb(this.map);
+  this.depth && cb(this.ctx);
   return this;
 };
-t.searchCache = Va;
-t.export = function(a, c, b = 0, e = 0) {
+v.searchCache = Va;
+v.export = function(a, c, b = 0, e = 0) {
   let d, f;
   switch(e) {
     case 0:
@@ -2176,7 +2164,7 @@ t.export = function(a, c, b = 0, e = 0) {
   }
   return ya.call(this, a, c, d, f, b, e);
 };
-t.import = function(a, c) {
+v.import = function(a, c) {
   if (c) {
     switch("string" === typeof c && (c = JSON.parse(c)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), 3 === a.length && a.shift(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
@@ -2191,7 +2179,7 @@ t.import = function(a, c) {
     }
   }
 };
-t.serialize = function(a = !0) {
+v.serialize = function(a = !0) {
   let c = "", b = "", e = "";
   if (this.reg.size) {
     let f;
@@ -2213,10 +2201,10 @@ t.serialize = function(a = !0) {
   return a ? "function inject(index){" + c + b + e + "}" : c + b + e;
 };
 la(N.prototype);
-const mb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), nb = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
-function ob(a, c = {}) {
+const lb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), mb = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
+function nb(a, c = {}) {
   if (!this) {
-    return new ob(a, c);
+    return new nb(a, c);
   }
   "object" === typeof a && (c = a, a = a.name);
   a || console.info("Default storage space was used, because a name was not passed.");
@@ -2227,15 +2215,15 @@ function ob(a, c = {}) {
   this.db = null;
   this.h = {};
 }
-t = ob.prototype;
-t.mount = function(a) {
+v = nb.prototype;
+v.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
   }
   a.db = this;
   return this.open();
 };
-t.open = function() {
+v.open = function() {
   if (this.db) {
     return this.db;
   }
@@ -2243,11 +2231,11 @@ t.open = function() {
   navigator.storage && navigator.storage.persist();
   Y[a.id] || (Y[a.id] = []);
   Y[a.id].push(a.field);
-  const c = mb.open(a.id, 1);
+  const c = lb.open(a.id, 1);
   c.onupgradeneeded = function() {
     const b = a.db = this.result;
-    for (let e = 0, d; e < nb.length; e++) {
-      d = nb[e];
+    for (let e = 0, d; e < mb.length; e++) {
+      d = mb[e];
       for (let f = 0, g; f < Y[a.id].length; f++) {
         g = Y[a.id][f], b.objectStoreNames.contains(d + ("reg" !== d ? g ? ":" + g : "" : "")) || b.createObjectStore(d + ("reg" !== d ? g ? ":" + g : "" : ""));
       }
@@ -2260,18 +2248,18 @@ t.open = function() {
     };
   });
 };
-t.close = function() {
+v.close = function() {
   this.db && this.db.close();
   this.db = null;
 };
-t.destroy = function() {
-  const a = mb.deleteDatabase(this.id);
+v.destroy = function() {
+  const a = lb.deleteDatabase(this.id);
   return Z(a);
 };
-t.clear = function() {
+v.clear = function() {
   const a = [];
-  for (let b = 0, e; b < nb.length; b++) {
-    e = nb[b];
+  for (let b = 0, e; b < mb.length; b++) {
+    e = mb[b];
     for (let d = 0, f; d < Y[this.id].length; d++) {
       f = Y[this.id][d], a.push(e + ("reg" !== e ? f ? ":" + f : "" : ""));
     }
@@ -2282,7 +2270,7 @@ t.clear = function() {
   }
   return Z(c);
 };
-t.get = function(a, c, b = 0, e = 0, d = !0, f = !1) {
+v.get = function(a, c, b = 0, e = 0, d = !0, f = !1) {
   a = this.db.transaction((c ? "ctx" : "map") + (this.field ? ":" + this.field : ""), "readonly").objectStore((c ? "ctx" : "map") + (this.field ? ":" + this.field : "")).get(c ? c + ":" + a : a);
   const g = this;
   return Z(a).then(function(k) {
@@ -2315,7 +2303,7 @@ t.get = function(a, c, b = 0, e = 0, d = !0, f = !1) {
     return k;
   });
 };
-t.tag = function(a, c = 0, b = 0, e = !1) {
+v.tag = function(a, c = 0, b = 0, e = !1) {
   a = this.db.transaction("tag" + (this.field ? ":" + this.field : ""), "readonly").objectStore("tag" + (this.field ? ":" + this.field : "")).get(a);
   const d = this;
   return Z(a).then(function(f) {
@@ -2329,7 +2317,7 @@ t.tag = function(a, c = 0, b = 0, e = !1) {
     return e ? d.enrich(f) : f;
   });
 };
-t.enrich = function(a) {
+v.enrich = function(a) {
   "object" !== typeof a && (a = [a]);
   const c = this.db.transaction("reg", "readonly").objectStore("reg"), b = [];
   for (let e = 0; e < a.length; e++) {
@@ -2342,16 +2330,16 @@ t.enrich = function(a) {
     return e;
   });
 };
-t.has = function(a) {
+v.has = function(a) {
   a = this.db.transaction("reg", "readonly").objectStore("reg").getKey(a);
   return Z(a).then(function(c) {
     return !!c;
   });
 };
-t.search = null;
-t.info = function() {
+v.search = null;
+v.info = function() {
 };
-t.transaction = function(a, c, b) {
+v.transaction = function(a, c, b) {
   a += "reg" !== a ? this.field ? ":" + this.field : "" : "";
   let e = this.h[a + ":" + c];
   if (e) {
@@ -2366,7 +2354,7 @@ t.transaction = function(a, c, b) {
     return f;
   });
 };
-t.commit = async function(a, c, b) {
+v.commit = async function(a, c, b) {
   if (c) {
     await this.clear(), a.commit_task = [];
   } else {
@@ -2458,7 +2446,7 @@ t.commit = async function(a, c, b) {
     }
   }), a.map.clear(), a.ctx.clear(), a.tag && a.tag.clear(), a.store && a.store.clear(), a.document || a.reg.clear());
 };
-function qb(a, c, b) {
+function pb(a, c, b) {
   const e = a.value;
   let d, f = 0;
   for (let g = 0, k; g < e.length; g++) {
@@ -2482,22 +2470,22 @@ function qb(a, c, b) {
   f ? d && a.update(e) : a.delete();
   a.continue();
 }
-t.remove = function(a) {
+v.remove = function(a) {
   "object" !== typeof a && (a = [a]);
   return Promise.all([this.transaction("map", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && qb(b, a);
+      b && pb(b, a);
     };
   }), this.transaction("ctx", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && qb(b, a);
+      b && pb(b, a);
     };
   }), this.transaction("tag", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && qb(b, a, !0);
+      b && pb(b, a, !0);
     };
   }), this.transaction("reg", "readwrite", function(c) {
     for (let b = 0; b < a.length; b++) {
@@ -2516,6 +2504,6 @@ function Z(a, c) {
     a = null;
   });
 }
-;export default {Index:N, Charset:bb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:ob, Language:{}};
+;export default {Index:N, Charset:bb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:nb, Language:{}};
 
-export const Index=N;export const  Charset=bb;export const  Encoder=ja;export const  Document=U;export const  Worker=P;export const  Resolver=W;export const  IndexedDB=ob;export const  Language={};
\ No newline at end of file
+export const Index=N;export const  Charset=bb;export const  Encoder=ja;export const  Document=U;export const  Worker=P;export const  Resolver=W;export const  IndexedDB=nb;export const  Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.bundle.module.min.js b/dist/flexsearch.bundle.module.min.js
index 5367920..8d7ead9 100644
--- a/dist/flexsearch.bundle.module.min.js
+++ b/dist/flexsearch.bundle.module.min.js
@@ -1,96 +1,95 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle/Module)
+ * FlexSearch.js v0.8.149 (Bundle/Module)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var t;function z(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(h){return a(b(h))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function B(){return Object.create(null)}function E(a){return"string"===typeof a}
-function I(a){return"object"===typeof a}function aa(a){const c=[];for(const b of a.keys())c.push(b);return c}function J(a,c){if(E(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function ba(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ca=/[^\p{L}\p{N}]+/u,da=/(\d{3})/g,ea=/(\D)(\d{3})/g,fa=/(\d{3})(\D)/g,ha=/[\u0300-\u036f]/g;function ia(a={}){if(!this||this.constructor!==ia)return new ia(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}t=ia.prototype;
-t.assign=function(a){this.normalize=z(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
-this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,ca)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:z(b&&new Set(b),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=z((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=z((b=a.stemmer)&&new Map(b),
-null,this.stemmer);this.replacer=z(a.replacer,null,this.replacer);this.minlength=z(a.minlength,1,this.minlength);this.maxlength=z(a.maxlength,0,this.maxlength);this.rtl=z(a.rtl,!1,this.rtl);if(this.cache=b=z(a.cache,!0,this.cache))this.H=null,this.S="number"===typeof b?b:2E5,this.B=new Map,this.G=new Map,this.L=this.K=128;this.h="";this.M=null;this.A="";this.N=null;if(this.matcher)for(const d of this.matcher.keys())this.h+=(this.h?"|":"")+d;if(this.stemmer)for(const d of this.stemmer.keys())this.A+=
-(this.A?"|":"")+d;return this};t.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.A+=(this.A?"|":"")+a;this.N=null;this.cache&&K(this);return this};t.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&K(this);return this};
-t.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&K(this);return this};t.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&K(this);return this};
-t.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&K(this);return this};
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-X.prototype.get=function(a){const c=this.cache.get(a);c&&this.h!==a&&(this.cache.delete(a),this.cache.set(this.h=a,c));return c};X.prototype.remove=function(a){for(const c of this.cache){const b=c[0];c[1].includes(a)&&this.cache.delete(b)}};X.prototype.clear=function(){this.cache.clear();this.h=""};const Wa={normalize:!1,numeric:!1};const Xa={};const Ya=new Map([["b","p"],["v","f"],["w","f"],["z","s"],["x","s"],["d","t"],["n","m"],["c","k"],["g","k"],["j","k"],["q","k"],["i","e"],["y","e"],["u","o"]]);const Za=new Map([["ae","a"],["oe","o"],["sh","s"],["kh","k"],["th","t"],["ph","f"],["pf","f"]]),$a=[/([^aeo])h(.)/g,"$1$2",/([aeo])h([^aeo]|$)/g,"$1$2",/(.)\1+/g,"$1"];const ab={a:"",e:"",i:"",o:"",u:"",y:"",b:1,f:1,p:1,v:1,c:2,g:2,j:2,k:2,q:2,s:2,x:2,z:2,"\u00df":2,d:3,t:3,l:4,m:5,n:5,r:6};var bb={X:Wa,W:Xa,Y:Xa,LatinBalance:{dedupe:!0,mapper:Ya},LatinAdvanced:{dedupe:!0,mapper:Ya,matcher:Za,replacer:$a},LatinExtra:{dedupe:!0,mapper:Ya,replacer:$a.concat([/(?!^)[aeo]/g,""]),matcher:Za},LatinSoundex:{dedupe:!1,include:{letter:!0},finalize:function(a){for(let b=0;b<a.length;b++){var c=a[b];let e=c.charAt(0),d=ab[e];for(let f=1,g;f<c.length&&(g=c.charAt(f),"h"===g||"w"===g||!(g=ab[g])||g===d||(e+=g,d=g,4!==e.length));f++);a[b]=e}}},LatinExact:Wa,LatinDefault:Xa,LatinSimple:Xa};const cb={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};N.prototype.add=function(a,c,b,e){if(c&&(a||0===a)){if(!e&&!b&&this.reg.has(a))return this.update(a,c);c=this.encoder.encode(c);if(e=c.length){const l=B(),n=B(),m=this.depth,q=this.resolution;for(let p=0;p<e;p++){let r=c[this.rtl?e-1-p:p];var d=r.length;if(d&&(m||!n[r])){var f=this.score?this.score(c,r,p,null,0):db(q,e,p),g="";switch(this.tokenize){case "full":if(2<d){for(let u=0,v;u<d;u++)for(f=d;f>u;f--){g=r.substring(u,f);v=this.rtl?d-1-u:u;var h=this.score?this.score(c,r,p,g,v):db(q,e,p,d,v);
-eb(this,n,g,h,a,b)}break}case "bidirectional":case "reverse":if(1<d){for(h=d-1;0<h;h--){g=r[this.rtl?d-1-h:h]+g;var k=this.score?this.score(c,r,p,g,h):db(q,e,p,d,h);eb(this,n,g,k,a,b)}g=""}case "forward":if(1<d){for(h=0;h<d;h++)g+=r[this.rtl?d-1-h:h],eb(this,n,g,f,a,b);break}default:if(eb(this,n,r,f,a,b),m&&1<e&&p<e-1)for(d=B(),g=this.U,f=r,h=Math.min(m+1,this.rtl?p+1:e-p),d[f]=1,k=1;k<h;k++)if((r=c[this.rtl?e-1-p-k:p+k])&&!d[r]){d[r]=1;const u=this.score?this.score(c,f,p,r,k-1):db(g+(e/2>g?0:1),
-e,p,h-1,k-1),v=this.bidirectional&&r>f;eb(this,l,v?f:r,u,a,b,v?r:f)}}}}this.fastupdate||this.reg.add(a)}else c=""}this.db&&(c||this.commit_task.push({del:a}),this.T&&fb(this));return this};
-function eb(a,c,b,e,d,f,g){let h=g?a.ctx:a.map,k;if(!c[b]||g&&!(k=c[b])[g])if(g?(c=k||(c[b]=B()),c[g]=1,(k=h.get(g))?h=k:h.set(g,h=new Map)):c[b]=1,(k=h.get(b))?h=k:h.set(b,h=k=[]),h=h[e]||(h[e]=[]),!f||!h.includes(d)){if(h.length===2**31-1){c=new R(h);if(a.fastupdate)for(let l of a.reg.values())l.includes(h)&&(l[l.indexOf(h)]=c);k[e]=h=c}h.push(d);a.fastupdate&&((e=a.reg.get(d))?e.push(h):a.reg.set(d,[h]))}}
-function db(a,c,b,e,d){return b&&1<a?c+(e||0)<=a?b+(d||0):(a-1)/(c+(e||0))*(b+(d||0))+1|0:0};N.prototype.search=function(a,c,b){b||(!c&&I(a)?(b=a,a=""):I(c)&&(b=c,c=0));let e=[],d,f,g,h=0,k,l,n,m,q;b?(a=b.query||a,c=b.limit||c,h=b.offset||0,f=b.context,g=b.suggest,q=(k=!1!==b.resolve)&&b.enrich,n=b.boost,m=b.resolution,l=this.db&&b.tag):k=this.resolve;let p=this.encoder.encode(a);d=p.length;c=c||(k?100:0);if(1===d)return gb.call(this,p[0],"",c,h,k,q,l);f=this.depth&&!1!==f;if(2===d&&f&&!g)return gb.call(this,p[1],p[0],c,h,k,q,l);let r=B(),u=0,v;1<d&&f&&(v=p[0],u=1);m||0===m||(m=v?this.U:
-this.resolution);if(this.db){if(this.db.search&&(a=this.db.search(this,p,c,h,g,k,q,l),!1!==a))return a;const w=this;return async function(){for(let y,F;u<d;u++){if((F=p[u])&&!r[F]){r[F]=1;y=await hb(w,F,v,0,0,!1,!1);if(y=ib(y,e,g,m)){e=y;break}v&&(g&&y&&e.length||(v=F))}g&&v&&u===d-1&&!e.length&&(m=w.resolution,v="",u=-1,r=B())}return jb(e,m,c,h,g,n,k)}()}for(let w,y;u<d;u++){if((y=p[u])&&!r[y]){r[y]=1;w=hb(this,y,v,0,0,!1,!1);if(w=ib(w,e,g,m)){e=w;break}v&&(g&&w&&e.length||(v=y))}g&&v&&u===d-1&&
-!e.length&&(m=this.resolution,v="",u=-1,r=B())}return jb(e,m,c,h,g,n,k)};function jb(a,c,b,e,d,f,g){let h=a.length,k=a;if(1<h)k=Fa(a,c,b,e,d,f,g);else if(1===h)return g?Ia.call(null,a[0],b,e):new W(a[0]);return g?k:new W(k)}function gb(a,c,b,e,d,f,g){a=hb(this,a,c,b,e,d,f,g);return this.db?a.then(function(h){return d?h||[]:new W(h)}):a&&a.length?d?Ia.call(this,a,b,e):new W(a):d?[]:new W}
-function ib(a,c,b,e){let d=[];if(a&&a.length){if(a.length<=e){c.push(a);return}for(let f=0,g;f<e;f++)if(g=a[f])d[f]=g;if(d.length){c.push(d);return}}if(!b)return d}function hb(a,c,b,e,d,f,g,h){let k;b&&(k=a.bidirectional&&c>b)&&(k=b,b=c,c=k);if(a.db)return a.db.get(c,b,e,d,f,g,h);a=b?(a=a.ctx.get(b))&&a.get(c):a.map.get(c);return a};N.prototype.remove=function(a,c){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let e=0,d;e<b.length;e++){if(d=b[e])if(2>d.length)d.pop();else{const f=d.indexOf(a);f===b.length-1?d.pop():d.splice(f,1)}}else kb(this.map,a),this.depth&&kb(this.ctx,a);c||this.reg.delete(a)}this.db&&(this.commit_task.push({del:a}),this.T&&fb(this));this.cache&&this.cache.remove(a);return this};
-function kb(a,c){let b=0;if(a.constructor===Array)for(let e=0,d,f;e<a.length;e++){if((d=a[e])&&d.length)if(f=d.indexOf(c),0<=f){1<d.length?(d.splice(f,1),b++):delete a[e];break}else b++}else for(let e of a.entries()){const d=e[0],f=kb(e[1],c);f?b+=f:a.delete(d)}return b};function N(a,c){if(!this||this.constructor!==N)return new N(a);if(a){var b=E(a)?a:a.preset;b&&(a=Object.assign({},cb[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=E(a.encoder)?bb[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new ia(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
-this.score=a.score||null;(b=a.keystore||0)&&(this.keystore=b);this.map=b?new S(b):new Map;this.ctx=b?new S(b):new Map;this.reg=c||(this.fastupdate?b?new S(b):new Map:b?new T(b):new Set);this.U=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new X(b);this.resolve=!1!==a.resolve;if(b=a.db)this.db=this.mount(b);this.T=!1!==a.commit;this.commit_task=[];this.commit_timer=null;this.priority=a.priority||4}t=N.prototype;
-t.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};t.commit=function(a,c){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,c)};t.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function fb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
-t.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]);return this};t.append=function(a,c){return this.add(a,c,!0)};t.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)};t.update=function(a,c){const b=this,e=this.remove(a);return e&&e.then?e.then(()=>b.add(a,c)):this.add(a,c)};
-function lb(a){let c=0;if(a.constructor===Array)for(let b=0,e;b<a.length;b++)(e=a[b])&&(c+=e.length);else for(const b of a.entries()){const e=b[0],d=lb(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;lb(this.map);this.depth&&lb(this.ctx);return this};t.searchCache=Va;
-t.export=function(a,c,b=0,e=0){let d,f;switch(e){case 0:d="reg";f=wa(this.reg);break;case 1:d="cfg";f=null;break;case 2:d="map";f=sa(this.map,this.reg.size);break;case 3:d="ctx";f=ua(this.ctx,this.reg.size);break;default:return}return ya.call(this,a,c,d,f,b,e)};
-t.import=function(a,c){if(c)switch("string"===typeof c&&(c=JSON.parse(c)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=xa(c,this.reg);break;case "map":this.map=ta(c,this.map);break;case "ctx":this.ctx=va(c,this.ctx)}};
-t.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=za(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};la(N.prototype);const mb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),nb=["map","ctx","tag","reg","cfg"],Y=B();
-function pb(a,c={}){if(!this)return new pb(a,c);"object"===typeof a&&(c=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=c.field?c.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=c.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}t=pb.prototype;t.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
-t.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const c=mb.open(a.id,1);c.onupgradeneeded=function(){const b=a.db=this.result;for(let e=0,d;e<nb.length;e++){d=nb[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],b.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||b.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(c,function(b){a.db=b;a.db.onversionchange=function(){a.close()}})};
-t.close=function(){this.db&&this.db.close();this.db=null};t.destroy=function(){const a=mb.deleteDatabase(this.id);return Z(a)};t.clear=function(){const a=[];for(let b=0,e;b<nb.length;b++){e=nb[b];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const c=this.db.transaction(a,"readwrite");for(let b=0;b<a.length;b++)c.objectStore(a[b]).clear();return Z(c)};
-t.get=function(a,c,b=0,e=0,d=!0,f=!1){a=this.db.transaction((c?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((c?"ctx":"map")+(this.field?":"+this.field:"")).get(c?c+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(d){if(!b&&!e&&1===h.length)return h[0];for(let l=0,n;l<h.length;l++)if((n=h[l])&&n.length){if(e>=n.length){e-=n.length;continue}const m=b?e+Math.min(n.length-e,b):n.length;for(let q=e;q<m;q++)k.push(n[q]);e=0;if(k.length===b)break}return f?
-g.enrich(k):k}return h})};t.tag=function(a,c=0,b=0,e=!1){a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);const d=this;return Z(a).then(function(f){if(!f||!f.length||b>=f.length)return[];if(!c&&!b)return f;f=f.slice(b,b+c);return e?d.enrich(f):f})};
-t.enrich=function(a){"object"!==typeof a&&(a=[a]);const c=this.db.transaction("reg","readonly").objectStore("reg"),b=[];for(let e=0;e<a.length;e++)b[e]=Z(c.get(a[e]));return Promise.all(b).then(function(e){for(let d=0;d<e.length;d++)e[d]={id:a[d],doc:e[d]?JSON.parse(e[d]):null};return e})};t.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(c){return!!c})};t.search=null;t.info=function(){};
-t.transaction=function(a,c,b){a+="reg"!==a?this.field?":"+this.field:"":"";let e=this.h[a+":"+c];if(e)return b.call(this,e);let d=this.db.transaction(a,c);this.h[a+":"+c]=e=d.objectStore(a);const f=b.call(this,e);this.h[a+":"+c]=null;return Z(d).finally(function(){d=e=null;return f})};
-t.commit=async function(a,c,b){if(c)await this.clear(),a.commit_task=[];else{let e=a.commit_task;a.commit_task=[];for(let d=0,f;d<e.length;d++)if(f=e[d],f.clear){await this.clear();c=!0;break}else e[d]=f.del;c||(b||(e=e.concat(aa(a.reg))),e.length&&await this.remove(e))}a.reg.size&&(await this.transaction("map","readwrite",function(e){for(const d of a.map){const f=d[0],g=d[1];g.length&&(c?e.put(g,f):e.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
-for(let n=0,m,q;n<l;n++)if((q=g[n])&&q.length){if((m=h[n])&&m.length)for(k=0;k<q.length;k++)m.push(q[k]);else h[n]=q;k=1}}else h=g,k=1;k&&e.put(h,f)})}}),await this.transaction("ctx","readwrite",function(e){for(const d of a.ctx){const f=d[0],g=d[1];for(const h of g){const k=h[0],l=h[1];l.length&&(c?e.put(l,f+":"+k):e.get(f+":"+k).onsuccess=function(){let n=this.result;var m;if(n&&n.length){const q=Math.max(n.length,l.length);for(let p=0,r,u;p<q;p++)if((u=l[p])&&u.length){if((r=n[p])&&r.length)for(m=
-0;m<u.length;m++)r.push(u[m]);else n[p]=u;m=1}}else n=l,m=1;m&&e.put(n,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(e){for(const d of a.store){const f=d[0],g=d[1];e.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(e){for(const d of a.reg.keys())e.put(1,d)}),a.tag&&await this.transaction("tag","readwrite",function(e){for(const d of a.tag){const f=d[0],g=d[1];g.length&&(e.get(f).onsuccess=function(){let h=this.result;
-h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function qb(a,c,b){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=b?e:e[g]){for(let k=0,l,n;k<c.length;k++)if(n=c[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(b)break}f?d&&a.update(e):a.delete();a.continue()}
-t.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a)}}),this.transaction("ctx","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a)}}),this.transaction("tag","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a,!0)}}),this.transaction("reg","readwrite",function(c){for(let b=0;b<a.length;b++)c.delete(a[b])})])};
-function Z(a,c){return new Promise((b,e)=>{a.onsuccess=a.oncomplete=function(){c&&c(this.result);c=null;b(this.result)};a.onerror=a.onblocked=e;a=null})};export default {Index:N,Charset:bb,Encoder:ia,Document:U,Worker:P,Resolver:W,IndexedDB:pb,Language:{}};
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+e,p,h-1,k-1),v=this.bidirectional&&r>f;gb(this,l,v?f:r,t,a,c,v?r:f)}}}}this.fastupdate||this.reg.add(a)}else b=""}this.db&&(b||this.commit_task.push({del:a}),this.T&&db(this));return this};
+function gb(a,b,c,e,d,f,g){let h=g?a.ctx:a.map,k;if(!b[c]||g&&!(k=b[c])[g])if(g?(b=k||(b[c]=B()),b[g]=1,(k=h.get(g))?h=k:h.set(g,h=new Map)):b[c]=1,(k=h.get(c))?h=k:h.set(c,h=k=[]),h=h[e]||(h[e]=[]),!f||!h.includes(d)){if(h.length===2**31-1){b=new R(h);if(a.fastupdate)for(let l of a.reg.values())l.includes(h)&&(l[l.indexOf(h)]=b);k[e]=h=b}h.push(d);a.fastupdate&&((e=a.reg.get(d))?e.push(h):a.reg.set(d,[h]))}}
+function fb(a,b,c,e,d){return c&&1<a?b+(e||0)<=a?c+(d||0):(a-1)/(b+(e||0))*(c+(d||0))+1|0:0};M.prototype.search=function(a,b,c){c||(!b&&H(a)?(c=a,a=""):H(b)&&(c=b,b=0));let e=[],d,f,g,h=0,k,l,n,m,q;c?(a=c.query||a,b=c.limit||b,h=c.offset||0,f=c.context,g=c.suggest,q=(k=!1!==c.resolve)&&c.enrich,n=c.boost,m=c.resolution,l=this.db&&c.tag):k=this.resolve;let p=this.encoder.encode(a);d=p.length;b=b||(k?100:0);if(1===d)return hb.call(this,p[0],"",b,h,k,q,l);f=this.depth&&!1!==f;if(2===d&&f&&!g)return hb.call(this,p[1],p[0],b,h,k,q,l);let r=B(),t=0,v;1<d&&f&&(v=p[0],t=1);m||0===m||(m=v?this.U:
+this.resolution);if(this.db){if(this.db.search&&(a=this.db.search(this,p,b,h,g,k,q,l),!1!==a))return a;const w=this;return async function(){for(let x,E;t<d;t++){if((E=p[t])&&!r[E]){r[E]=1;x=await ib(w,E,v,0,0,!1,!1);if(x=jb(x,e,g,m)){e=x;break}v&&(g&&x&&e.length||(v=E))}g&&v&&t===d-1&&!e.length&&(m=w.resolution,v="",t=-1,r=B())}return kb(e,m,b,h,g,n,k)}()}for(let w,x;t<d;t++){if((x=p[t])&&!r[x]){r[x]=1;w=ib(this,x,v,0,0,!1,!1);if(w=jb(w,e,g,m)){e=w;break}v&&(g&&w&&e.length||(v=x))}g&&v&&t===d-1&&
+!e.length&&(m=this.resolution,v="",t=-1,r=B())}return kb(e,m,b,h,g,n,k)};function kb(a,b,c,e,d,f,g){let h=a.length,k=a;if(1<h)k=Fa(a,b,c,e,d,f,g);else if(1===h)return g?Ia.call(null,a[0],c,e):new W(a[0]);return g?k:new W(k)}function hb(a,b,c,e,d,f,g){a=ib(this,a,b,c,e,d,f,g);return this.db?a.then(function(h){return d?h||[]:new W(h)}):a&&a.length?d?Ia.call(this,a,c,e):new W(a):d?[]:new W}
+function jb(a,b,c,e){let d=[];if(a&&a.length){if(a.length<=e){b.push(a);return}for(let f=0,g;f<e;f++)if(g=a[f])d[f]=g;if(d.length){b.push(d);return}}if(!c)return d}function ib(a,b,c,e,d,f,g,h){let k;c&&(k=a.bidirectional&&b>c)&&(k=c,c=b,b=k);if(a.db)return a.db.get(b,c,e,d,f,g,h);a=c?(a=a.ctx.get(c))&&a.get(b):a.map.get(b);return a};function M(a,b){if(!this||this.constructor!==M)return new M(a);if(a){var c=F(a)?a:a.preset;c&&(a=Object.assign({},eb[c],a))}else a={};c=a.context;const e=!0===c?{depth:1}:c||{},d=F(a.encoder)?bb[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new ia(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=c=(c=a.tokenize)&&"default"!==c&&"exact"!==c&&c||"strict";this.depth="strict"===c&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
+this.score=a.score||null;(c=a.keystore||0)&&(this.keystore=c);this.map=c?new S(c):new Map;this.ctx=c?new S(c):new Map;this.reg=b||(this.fastupdate?c?new S(c):new Map:c?new T(c):new Set);this.U=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(c=a.cache||null)&&new X(c);this.resolve=!1!==a.resolve;if(c=a.db)this.db=this.mount(c);this.T=!1!==a.commit;this.commit_task=[];this.commit_timer=null;this.priority=a.priority||4}u=M.prototype;
+u.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};u.commit=function(a,b){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,b)};u.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function db(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
+u.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]);return this};u.append=function(a,b){return this.add(a,b,!0)};u.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)};u.update=function(a,b){const c=this,e=this.remove(a);return e&&e.then?e.then(()=>c.add(a,b)):this.add(a,b)};
+u.cleanup=function(){if(!this.fastupdate)return this;cb(this.map);this.depth&&cb(this.ctx);return this};u.searchCache=Va;u.export=function(a,b,c=0,e=0){let d,f;switch(e){case 0:d="reg";f=wa(this.reg);break;case 1:d="cfg";f=null;break;case 2:d="map";f=sa(this.map,this.reg.size);break;case 3:d="ctx";f=ua(this.ctx,this.reg.size);break;default:return}return ya.call(this,a,b,d,f,c,e)};
+u.import=function(a,b){if(b)switch("string"===typeof b&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=xa(b,this.reg);break;case "map":this.map=ta(b,this.map);break;case "ctx":this.ctx=va(b,this.ctx)}};
+u.serialize=function(a=!0){let b="",c="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),b+=(b?",":"")+("string"===f?'"'+d+'"':d);b="index.reg=new Set(["+b+"]);";c=za(this.map,f);c="index.map=new Map(["+c+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+b+c+e+"}":b+c+e};la(M.prototype);const lb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),mb=["map","ctx","tag","reg","cfg"],Y=B();
+function ob(a,b={}){if(!this)return new ob(a,b);"object"===typeof a&&(b=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=b.field?b.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=b.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}u=ob.prototype;u.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+u.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const b=lb.open(a.id,1);b.onupgradeneeded=function(){const c=a.db=this.result;for(let e=0,d;e<mb.length;e++){d=mb[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],c.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||c.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(b,function(c){a.db=c;a.db.onversionchange=function(){a.close()}})};
+u.close=function(){this.db&&this.db.close();this.db=null};u.destroy=function(){const a=lb.deleteDatabase(this.id);return Z(a)};u.clear=function(){const a=[];for(let c=0,e;c<mb.length;c++){e=mb[c];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const b=this.db.transaction(a,"readwrite");for(let c=0;c<a.length;c++)b.objectStore(a[c]).clear();return Z(b)};
+u.get=function(a,b,c=0,e=0,d=!0,f=!1){a=this.db.transaction((b?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((b?"ctx":"map")+(this.field?":"+this.field:"")).get(b?b+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(d){if(!c&&!e&&1===h.length)return h[0];for(let l=0,n;l<h.length;l++)if((n=h[l])&&n.length){if(e>=n.length){e-=n.length;continue}const m=c?e+Math.min(n.length-e,c):n.length;for(let q=e;q<m;q++)k.push(n[q]);e=0;if(k.length===c)break}return f?
+g.enrich(k):k}return h})};u.tag=function(a,b=0,c=0,e=!1){a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);const d=this;return Z(a).then(function(f){if(!f||!f.length||c>=f.length)return[];if(!b&&!c)return f;f=f.slice(c,c+b);return e?d.enrich(f):f})};
+u.enrich=function(a){"object"!==typeof a&&(a=[a]);const b=this.db.transaction("reg","readonly").objectStore("reg"),c=[];for(let e=0;e<a.length;e++)c[e]=Z(b.get(a[e]));return Promise.all(c).then(function(e){for(let d=0;d<e.length;d++)e[d]={id:a[d],doc:e[d]?JSON.parse(e[d]):null};return e})};u.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(b){return!!b})};u.search=null;u.info=function(){};
+u.transaction=function(a,b,c){a+="reg"!==a?this.field?":"+this.field:"":"";let e=this.h[a+":"+b];if(e)return c.call(this,e);let d=this.db.transaction(a,b);this.h[a+":"+b]=e=d.objectStore(a);const f=c.call(this,e);this.h[a+":"+b]=null;return Z(d).finally(function(){d=e=null;return f})};
+u.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let e=a.commit_task;a.commit_task=[];for(let d=0,f;d<e.length;d++)if(f=e[d],f.clear){await this.clear();b=!0;break}else e[d]=f.del;b||(c||(e=e.concat(aa(a.reg))),e.length&&await this.remove(e))}a.reg.size&&(await this.transaction("map","readwrite",function(e){for(const d of a.map){const f=d[0],g=d[1];g.length&&(b?e.put(g,f):e.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
+for(let n=0,m,q;n<l;n++)if((q=g[n])&&q.length){if((m=h[n])&&m.length)for(k=0;k<q.length;k++)m.push(q[k]);else h[n]=q;k=1}}else h=g,k=1;k&&e.put(h,f)})}}),await this.transaction("ctx","readwrite",function(e){for(const d of a.ctx){const f=d[0],g=d[1];for(const h of g){const k=h[0],l=h[1];l.length&&(b?e.put(l,f+":"+k):e.get(f+":"+k).onsuccess=function(){let n=this.result;var m;if(n&&n.length){const q=Math.max(n.length,l.length);for(let p=0,r,t;p<q;p++)if((t=l[p])&&t.length){if((r=n[p])&&r.length)for(m=
+0;m<t.length;m++)r.push(t[m]);else n[p]=t;m=1}}else n=l,m=1;m&&e.put(n,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(e){for(const d of a.store){const f=d[0],g=d[1];e.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(e){for(const d of a.reg.keys())e.put(1,d)}),a.tag&&await this.transaction("tag","readwrite",function(e){for(const d of a.tag){const f=d[0],g=d[1];g.length&&(e.get(f).onsuccess=function(){let h=this.result;
+h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function pb(a,b,c){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=c?e:e[g]){for(let k=0,l,n;k<b.length;k++)if(n=b[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(c)break}f?d&&a.update(e):a.delete();a.continue()}
+u.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&pb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&pb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&pb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(let c=0;c<a.length;c++)b.delete(a[c])})])};
+function Z(a,b){return new Promise((c,e)=>{a.onsuccess=a.oncomplete=function(){b&&b(this.result);b=null;c(this.result)};a.onerror=a.onblocked=e;a=null})};export default {Index:M,Charset:bb,Encoder:ia,Document:U,Worker:P,Resolver:W,IndexedDB:ob,Language:{}};
+export const Index=M;export const Charset=bb;export const Encoder=ia;export const Document=U;export const Worker=P;export const Resolver=W;export const IndexedDB=ob;export const Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.compact.debug.js b/dist/flexsearch.compact.debug.js
index 7efd114..679812e 100644
--- a/dist/flexsearch.compact.debug.js
+++ b/dist/flexsearch.compact.debug.js
@@ -1,12 +1,12 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle/Debug)
+ * FlexSearch.js v0.8.149 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
 (function(self){'use strict';
-var x;
+var w;
 function B(a, c, b) {
   const e = typeof b, d = typeof a;
   if ("undefined" !== e) {
@@ -50,10 +50,10 @@ function C() {
 function D(a) {
   return "string" === typeof a;
 }
-function I(a) {
+function H(a) {
   return "object" === typeof a;
 }
-function J(a, c) {
+function I(a, c) {
   if (D(c)) {
     a = a[c];
   } else {
@@ -71,9 +71,9 @@ function aa(a) {
   return c;
 }
 ;const ba = /[^\p{L}\p{N}]+/u, ca = /(\d{3})/g, da = /(\D)(\d{3})/g, ea = /(\d{3})(\D)/g, fa = /[\u0300-\u036f]/g;
-function K(a = {}) {
-  if (!this || this.constructor !== K) {
-    return new K(...arguments);
+function J(a = {}) {
+  if (!this || this.constructor !== J) {
+    return new J(...arguments);
   }
   if (arguments.length) {
     for (a = 0; a < arguments.length; a++) {
@@ -83,8 +83,8 @@ function K(a = {}) {
     this.assign(a);
   }
 }
-x = K.prototype;
-x.assign = function(a) {
+w = J.prototype;
+w.assign = function(a) {
   this.normalize = B(a.normalize, !0, this.normalize);
   let c = a.include, b = c || a.exclude || a.split, e;
   if (b || "" === b) {
@@ -148,20 +148,20 @@ x.assign = function(a) {
   }
   return this;
 };
-x.addStemmer = function(a, c) {
+w.addStemmer = function(a, c) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, c);
   this.D += (this.D ? "|" : "") + a;
   this.N = null;
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addFilter = function(a) {
+w.addFilter = function(a) {
   "function" === typeof a ? this.filter = a : (this.filter || (this.filter = new Set()), this.filter.add(a));
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addMapper = function(a, c) {
+w.addMapper = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -170,10 +170,10 @@ x.addMapper = function(a, c) {
   }
   this.mapper || (this.mapper = new Map());
   this.mapper.set(a, c);
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addMatcher = function(a, c) {
+w.addMatcher = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -184,26 +184,26 @@ x.addMatcher = function(a, c) {
   this.matcher.set(a, c);
   this.h += (this.h ? "|" : "") + a;
   this.M = null;
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addReplacer = function(a, c) {
+w.addReplacer = function(a, c) {
   if ("string" === typeof a) {
     return this.addMatcher(a, c);
   }
   this.replacer || (this.replacer = []);
   this.replacer.push(a, c);
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.encode = function(a) {
+w.encode = function(a) {
   if (this.cache && a.length <= this.K) {
     if (this.H) {
       if (this.F.has(a)) {
         return this.F.get(a);
       }
     } else {
-      this.H = setTimeout(L, 50, this);
+      this.H = setTimeout(K, 50, this);
     }
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = fa ? a.normalize("NFKD").replace(fa, "").toLowerCase() : a.toLowerCase());
@@ -225,7 +225,7 @@ x.encode = function(a) {
                 continue;
               }
             } else {
-              this.H = setTimeout(L, 50, this);
+              this.H = setTimeout(K, 50, this);
             }
           }
           this.stemmer && 2 < g.length && (this.N || (this.N = new RegExp("(?!^)(" + this.D + ")$")), d = g, g = g.replace(this.N, h => this.stemmer.get(h)), d !== g && this.filter && g.length >= this.minlength && ("function" === typeof this.filter ? !this.filter(g) : this.filter.has(g)) && (g = ""));
@@ -252,12 +252,12 @@ x.encode = function(a) {
   this.cache && a.length <= this.K && (this.F.set(a, b), this.F.size > this.R && (this.F.clear(), this.K = this.K / 1.1 | 0));
   return b;
 };
-function L(a) {
+function K(a) {
   a.H = null;
   a.F.clear();
   a.G.clear();
 }
-;let M, N;
+;let L, M;
 async function ha(a) {
   a = a.data;
   var c = a.task;
@@ -265,41 +265,41 @@ async function ha(a) {
   let e = a.args;
   switch(c) {
     case "init":
-      N = a.options || {};
-      (c = a.factory) ? (Function("return " + c)()(self), M = new self.FlexSearch.Index(N), delete self.FlexSearch) : M = new O(N);
+      M = a.options || {};
+      (c = a.factory) ? (Function("return " + c)()(self), L = new self.FlexSearch.Index(M), delete self.FlexSearch) : L = new N(M);
       postMessage({id:b});
       break;
     default:
       let d;
       if ("export" === c) {
-        if (!N.export || "function" !== typeof N.export) {
+        if (!M.export || "function" !== typeof M.export) {
           throw Error('Either no extern configuration provided for the Worker-Index or no method was defined on the config property "export".');
         }
-        e[1] ? (e[0] = N.export, e[2] = 0, e[3] = 1) : e = null;
+        e[1] ? (e[0] = M.export, e[2] = 0, e[3] = 1) : e = null;
       }
       if ("import" === c) {
-        if (!N.import || "function" !== typeof N.import) {
+        if (!M.import || "function" !== typeof M.import) {
           throw Error('Either no extern configuration provided for the Worker-Index or no method was defined on the config property "import".');
         }
-        e[0] && (a = await N.import.call(M, e[0]), M.import(e[0], a));
+        e[0] && (a = await M.import.call(L, e[0]), L.import(e[0], a));
       } else {
-        (d = e && M[c].apply(M, e)) && d.then && (d = await d);
+        (d = e && L[c].apply(L, e)) && d.then && (d = await d);
       }
       postMessage("search" === c ? {id:b, msg:d} : {id:b});
   }
 }
 ;function ia(a) {
-  P.call(a, "add");
-  P.call(a, "append");
-  P.call(a, "search");
-  P.call(a, "update");
-  P.call(a, "remove");
+  O.call(a, "add");
+  O.call(a, "append");
+  O.call(a, "search");
+  O.call(a, "update");
+  O.call(a, "remove");
 }
 let ja, ka, Q;
 function la() {
   ja = Q = 0;
 }
-function P(a) {
+function O(a) {
   this[a + "Async"] = function() {
     const c = arguments;
     var b = c[c.length - 1];
@@ -430,7 +430,7 @@ function sa(a, c) {
   }
   return c;
 }
-function U(a, c, b, e, d, f, g = 0) {
+function ta(a, c, b, e, d, f, g = 0) {
   const k = e && e.constructor === Array;
   var h = k ? e.shift() : e;
   if (!h) {
@@ -439,12 +439,12 @@ function U(a, c, b, e, d, f, g = 0) {
   if ((h = a((c ? c + "." : "") + (g + 1) + "." + b, JSON.stringify(h))) && h.then) {
     const l = this;
     return h.then(function() {
-      return U.call(l, a, c, b, k ? e : null, d, f, g + 1);
+      return ta.call(l, a, c, b, k ? e : null, d, f, g + 1);
     });
   }
-  return U.call(this, a, c, b, k ? e : null, d, f, g + 1);
+  return ta.call(this, a, c, b, k ? e : null, d, f, g + 1);
 }
-function ta(a, c) {
+function ua(a, c) {
   let b = "";
   for (const e of a.entries()) {
     a = e[0];
@@ -464,8 +464,8 @@ function ta(a, c) {
   }
   return b;
 }
-;V.prototype.add = function(a, c, b) {
-  I(a) && (c = a, a = J(c, this.key));
+;U.prototype.add = function(a, c, b) {
+  H(a) && (c = a, a = I(c, this.key));
   if (c && (a || 0 === a)) {
     if (!b && this.reg.has(a)) {
       return this.update(a, c);
@@ -478,7 +478,7 @@ function ta(a, c) {
         d && e.add(a, d, !1, !0);
       } else {
         if (d = h.I, !d || d(c)) {
-          h.constructor === String ? h = ["" + h] : D(h) && (h = [h]), ua(c, h, this.J, 0, e, a, h[0], b);
+          h.constructor === String ? h = ["" + h] : D(h) && (h = [h]), va(c, h, this.J, 0, e, a, h[0], b);
         }
       }
     }
@@ -497,7 +497,7 @@ function ta(a, c) {
             continue;
           }
           f.constructor === String && (f = "" + f);
-          f = J(c, f);
+          f = I(c, f);
         }
         if (d && f) {
           D(f) && (f = [f]);
@@ -529,7 +529,7 @@ function ta(a, c) {
             k[l] = c[l];
             continue;
           }
-          va(c, k, l, 0, l[0], m);
+          wa(c, k, l, 0, l[0], m);
         }
       }
       this.store.set(a, k || c);
@@ -537,21 +537,21 @@ function ta(a, c) {
   }
   return this;
 };
-function va(a, c, b, e, d, f) {
+function wa(a, c, b, e, d, f) {
   a = a[d];
   if (e === b.length - 1) {
     c[d] = f || a;
   } else if (a) {
     if (a.constructor === Array) {
       for (c = c[d] = Array(a.length), d = 0; d < a.length; d++) {
-        va(a, c, b, e, d);
+        wa(a, c, b, e, d);
       }
     } else {
-      c = c[d] || (c[d] = C()), d = b[++e], va(a, c, b, e, d);
+      c = c[d] || (c[d] = C()), d = b[++e], wa(a, c, b, e, d);
     }
   }
 }
-function ua(a, c, b, e, d, f, g, k) {
+function va(a, c, b, e, d, f, g, k) {
   if (a = a[g]) {
     if (e === c.length - 1) {
       if (a.constructor === Array) {
@@ -567,24 +567,24 @@ function ua(a, c, b, e, d, f, g, k) {
     } else {
       if (a.constructor === Array) {
         for (g = 0; g < a.length; g++) {
-          ua(a, c, b, e, d, f, g, k);
+          va(a, c, b, e, d, f, g, k);
         }
       } else {
-        g = c[++e], ua(a, c, b, e, d, f, g, k);
+        g = c[++e], va(a, c, b, e, d, f, g, k);
       }
     }
   }
 }
-;function wa(a, c, b, e, d) {
+;function xa(a, c, b, e, d) {
   const f = a.length;
   let g = [], k, h;
   k = C();
-  for (let l = 0, m, n, r, p; l < c; l++) {
+  for (let l = 0, m, n, u, p; l < c; l++) {
     for (let q = 0; q < f; q++) {
-      if (r = a[q], l < r.length && (m = r[l])) {
+      if (u = a[q], l < u.length && (m = u[l])) {
         for (let t = 0; t < m.length; t++) {
           if (n = m[t], (h = k[n]) ? k[n]++ : (h = 0, k[n] = 1), p = g[h] || (g[h] = []), p.push(n), b && h === f - 1 && p.length - e === b) {
-            return p;
+            return e ? p.slice(e) : p;
           }
         }
       }
@@ -592,7 +592,7 @@ function ua(a, c, b, e, d, f, g, k) {
   }
   if (a = g.length) {
     if (d) {
-      g = 1 < g.length ? xa(g, b, e) : (g = g[0]).length > b || e ? g.slice(e, b + e) : g;
+      g = 1 < g.length ? ya(g, b, e) : (g = g[0]).length > b || e ? g.slice(e, b + e) : g;
     } else {
       if (a < f) {
         return [];
@@ -607,7 +607,7 @@ function ua(a, c, b, e, d, f, g, k) {
   }
   return g;
 }
-function xa(a, c, b) {
+function ya(a, c, b) {
   const e = [], d = C();
   let f;
   var g = a.length;
@@ -629,7 +629,7 @@ function xa(a, c, b) {
   }
   return e;
 }
-function ya(a, c) {
+function za(a, c) {
   const b = C(), e = [];
   for (let d = 0, f; d < c.length; d++) {
     f = c[d];
@@ -642,12 +642,12 @@ function ya(a, c) {
   }
   return e;
 }
-;function za(a, c, b, e) {
+;function Aa(a, c, b, e) {
   if (!a.length) {
     return a;
   }
   if (1 === a.length) {
-    return a = a[0], a = b || a.length > c ? c ? a.slice(b, b + c) : a.slice(b) : a, e ? W.call(this, a) : a;
+    return a = a[0], a = b || a.length > c ? c ? a.slice(b, b + c) : a.slice(b) : a, e ? V.call(this, a) : a;
   }
   let d = [];
   for (let f = 0, g, k; f < a.length; f++) {
@@ -661,7 +661,7 @@ function ya(a, c) {
       }
       k > c && (g = g.slice(0, c), k = c);
       if (!d.length && k >= c) {
-        return e ? W.call(this, g) : g;
+        return e ? V.call(this, g) : g;
       }
       d.push(g);
       c -= k;
@@ -671,9 +671,9 @@ function ya(a, c) {
     }
   }
   d = 1 < d.length ? [].concat.apply([], d) : d[0];
-  return e ? W.call(this, d) : d;
+  return e ? V.call(this, d) : d;
 }
-;function Aa(a, c, b) {
+;function Ba(a, c, b) {
   var e = b[0];
   if (e.then) {
     return Promise.all(b).then(function(m) {
@@ -687,30 +687,30 @@ function ya(a, c) {
   let d = [], f = 0, g = 0, k, h, l;
   for (let m = 0, n; m < b.length; m++) {
     if (n = b[m]) {
-      let r;
-      if (n.constructor === X) {
-        r = n.result;
+      let u;
+      if (n.constructor === W) {
+        u = n.result;
       } else if (n.constructor === Array) {
-        r = n;
+        u = n;
       } else {
         if (f = n.limit || 0, g = n.offset || 0, l = n.suggest, h = n.resolve, k = n.enrich && h, n.index) {
-          n.resolve = !1, n.enrich = !1, r = n.index.search(n).result, n.resolve = h, n.enrich = k;
+          n.resolve = !1, n.enrich = !1, u = n.index.search(n).result, n.resolve = h, n.enrich = k;
         } else if (n.and) {
-          r = a.and(n.and);
+          u = a.and(n.and);
         } else if (n.or) {
-          r = a.or(n.or);
+          u = a.or(n.or);
         } else if (n.xor) {
-          r = a.xor(n.xor);
+          u = a.xor(n.xor);
         } else if (n.not) {
-          r = a.not(n.not);
+          u = a.not(n.not);
         } else {
           continue;
         }
       }
-      if (r.then) {
-        d.push(r);
-      } else if (r.length) {
-        e[m] = r;
+      if (u.then) {
+        d.push(u);
+      } else if (u.length) {
+        e[m] = u;
       } else if (!l && ("and" === c || "xor" === c)) {
         e = [];
         break;
@@ -719,11 +719,11 @@ function ya(a, c) {
   }
   return {O:e, P:d, limit:f, offset:g, enrich:k, resolve:h, suggest:l};
 }
-;X.prototype.or = function() {
-  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f} = Aa(this, "or", arguments);
-  return Ba.call(this, a, c, b, e, d, f);
+;W.prototype.or = function() {
+  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f} = Ba(this, "or", arguments);
+  return Ca.call(this, a, c, b, e, d, f);
 };
-function Ba(a, c, b, e, d, f) {
+function Ca(a, c, b, e, d, f) {
   if (c.length) {
     const g = this;
     return Promise.all(c).then(function(k) {
@@ -731,53 +731,24 @@ function Ba(a, c, b, e, d, f) {
       for (let h = 0, l; h < k.length; h++) {
         (l = k[h]).length && (a[h] = l);
       }
-      return Ba.call(g, a, [], b, e, d, f);
+      return Ca.call(g, a, [], b, e, d, f);
     });
   }
-  a.length && (this.result.length && a.push(this.result), 2 > a.length ? this.result = a[0] : (this.result = xa(a, b, e), e = 0));
+  a.length && (this.result.length && a.push(this.result), 2 > a.length ? this.result = a[0] : (this.result = ya(a, b, e), e = 0));
   return f ? this.resolve(b, e, d) : this;
 }
-;X.prototype.and = function() {
+;W.prototype.and = function() {
   let a = this.result.length, c, b, e, d;
   if (!a) {
     const f = arguments[0];
     f && (a = !!f.suggest, d = f.resolve, c = f.limit, b = f.offset, e = f.enrich && d);
   }
   if (a) {
-    const {O:f, P:g, limit:k, offset:h, enrich:l, resolve:m, suggest:n} = Aa(this, "and", arguments);
-    return Ca.call(this, f, g, k, h, l, m, n);
+    const {O:f, P:g, limit:k, offset:h, enrich:l, resolve:m, suggest:n} = Ba(this, "and", arguments);
+    return Da.call(this, f, g, k, h, l, m, n);
   }
   return d ? this.resolve(c, b, e) : this;
 };
-function Ca(a, c, b, e, d, f, g) {
-  if (c.length) {
-    const k = this;
-    return Promise.all(c).then(function(h) {
-      a = [];
-      for (let l = 0, m; l < h.length; l++) {
-        (m = h[l]).length && (a[l] = m);
-      }
-      return Ca.call(k, a, [], b, e, d, f, g);
-    });
-  }
-  if (a.length) {
-    if (this.result.length && a.unshift(this.result), 2 > a.length) {
-      this.result = a[0];
-    } else {
-      if (c = aa(a)) {
-        return this.result = wa(a, c, b, e, g), f ? d ? W.call(this.index, this.result) : this.result : this;
-      }
-      this.result = [];
-    }
-  } else {
-    g || (this.result = a);
-  }
-  return f ? this.resolve(b, e, d) : this;
-}
-;X.prototype.xor = function() {
-  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Aa(this, "xor", arguments);
-  return Da.call(this, a, c, b, e, d, f, g);
-};
 function Da(a, c, b, e, d, f, g) {
   if (c.length) {
     const k = this;
@@ -793,14 +764,43 @@ function Da(a, c, b, e, d, f, g) {
     if (this.result.length && a.unshift(this.result), 2 > a.length) {
       this.result = a[0];
     } else {
-      return this.result = Ea.call(this, a, b, e, f, this.h), f ? d ? W.call(this.index, this.result) : this.result : this;
+      if (c = aa(a)) {
+        return this.result = xa(a, c, b, e, g), f ? d ? V.call(this.index, this.result) : this.result : this;
+      }
+      this.result = [];
     }
   } else {
     g || (this.result = a);
   }
   return f ? this.resolve(b, e, d) : this;
 }
-function Ea(a, c, b, e, d) {
+;W.prototype.xor = function() {
+  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Ba(this, "xor", arguments);
+  return Ea.call(this, a, c, b, e, d, f, g);
+};
+function Ea(a, c, b, e, d, f, g) {
+  if (c.length) {
+    const k = this;
+    return Promise.all(c).then(function(h) {
+      a = [];
+      for (let l = 0, m; l < h.length; l++) {
+        (m = h[l]).length && (a[l] = m);
+      }
+      return Ea.call(k, a, [], b, e, d, f, g);
+    });
+  }
+  if (a.length) {
+    if (this.result.length && a.unshift(this.result), 2 > a.length) {
+      this.result = a[0];
+    } else {
+      return this.result = Fa.call(this, a, b, e, f, this.h), f ? d ? V.call(this.index, this.result) : this.result : this;
+    }
+  } else {
+    g || (this.result = a);
+  }
+  return f ? this.resolve(b, e, d) : this;
+}
+function Fa(a, c, b, e, d) {
   const f = [], g = C();
   let k = 0;
   for (let h = 0, l; h < a.length; h++) {
@@ -808,17 +808,17 @@ function Ea(a, c, b, e, d) {
       k < l.length && (k = l.length);
       for (let m = 0, n; m < l.length; m++) {
         if (n = l[m]) {
-          for (let r = 0, p; r < n.length; r++) {
-            p = n[r], g[p] = g[p] ? 2 : 1;
+          for (let u = 0, p; u < n.length; u++) {
+            p = n[u], g[p] = g[p] ? 2 : 1;
           }
         }
       }
     }
   }
   for (let h = 0, l, m = 0; h < k; h++) {
-    for (let n = 0, r; n < a.length; n++) {
-      if (r = a[n]) {
-        if (l = r[h]) {
+    for (let n = 0, u; n < a.length; n++) {
+      if (u = a[n]) {
+        if (l = u[h]) {
           for (let p = 0, q; p < l.length; p++) {
             if (q = l[p], 1 === g[q]) {
               if (b) {
@@ -845,11 +845,11 @@ function Ea(a, c, b, e, d) {
   }
   return f;
 }
-;X.prototype.not = function() {
-  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Aa(this, "not", arguments);
-  return Fa.call(this, a, c, b, e, d, f, g);
+;W.prototype.not = function() {
+  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Ba(this, "not", arguments);
+  return Ga.call(this, a, c, b, e, d, f, g);
 };
-function Fa(a, c, b, e, d, f, g) {
+function Ga(a, c, b, e, d, f, g) {
   if (c.length) {
     const k = this;
     return Promise.all(c).then(function(h) {
@@ -857,17 +857,17 @@ function Fa(a, c, b, e, d, f, g) {
       for (let l = 0, m; l < h.length; l++) {
         (m = h[l]).length && (a[l] = m);
       }
-      return Fa.call(k, a, [], b, e, d, f, g);
+      return Ga.call(k, a, [], b, e, d, f, g);
     });
   }
   if (a.length && this.result.length) {
-    this.result = Ga.call(this, a, b, e, f);
+    this.result = Ha.call(this, a, b, e, f);
   } else if (f) {
     return this.resolve(b, e, d);
   }
-  return f ? d ? W.call(this.index, this.result) : this.result : this;
+  return f ? d ? V.call(this.index, this.result) : this.result : this;
 }
-function Ga(a, c, b, e) {
+function Ha(a, c, b, e) {
   const d = [];
   a = new Set(a.flat().flat());
   for (let f = 0, g, k = 0; f < this.result.length; f++) {
@@ -893,9 +893,9 @@ function Ga(a, c, b, e) {
   }
   return d;
 }
-;function X(a) {
-  if (!this || this.constructor !== X) {
-    return new X(a);
+;function W(a) {
+  if (!this || this.constructor !== W) {
+    return new W(a);
   }
   if (a && a.index) {
     return a.resolve = !1, this.index = a.index, this.h = a.boost || 0, this.result = a.index.search(a).result, this;
@@ -904,7 +904,7 @@ function Ga(a, c, b, e) {
   this.result = a || [];
   this.h = 0;
 }
-X.prototype.limit = function(a) {
+W.prototype.limit = function(a) {
   if (this.result.length) {
     const c = [];
     for (let b = 0, e; b < this.result.length; b++) {
@@ -923,7 +923,7 @@ X.prototype.limit = function(a) {
   }
   return this;
 };
-X.prototype.offset = function(a) {
+W.prototype.offset = function(a) {
   if (this.result.length) {
     const c = [];
     for (let b = 0, e; b < this.result.length; b++) {
@@ -935,23 +935,23 @@ X.prototype.offset = function(a) {
   }
   return this;
 };
-X.prototype.boost = function(a) {
+W.prototype.boost = function(a) {
   this.h += a;
   return this;
 };
-X.prototype.resolve = function(a, c, b) {
+W.prototype.resolve = function(a, c, b) {
   const e = this.result, d = this.index;
   this.result = this.index = null;
-  return e.length ? ("object" === typeof a && (b = a.enrich, c = a.offset, a = a.limit), za.call(d, e, a || 100, c, b)) : e;
+  return e.length ? ("object" === typeof a && (b = a.enrich, c = a.offset, a = a.limit), Aa.call(d, e, a || 100, c, b)) : e;
 };
 C();
-V.prototype.search = function(a, c, b, e) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+U.prototype.search = function(a, c, b, e) {
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   let d = [];
   var f = [];
   let g;
   let k, h, l;
-  let m = 0, n = !0, r;
+  let m = 0, n = !0, u;
   if (b) {
     b.constructor === Array && (b = {index:b});
     a = b.query || a;
@@ -962,49 +962,49 @@ V.prototype.search = function(a, c, b, e) {
     k = b.suggest;
     n = !0;
     this.store && b.enrich && !n && console.warn("Enrich results can only be done on a final resolver task or when calling .resolve({ enrich: true })");
-    r = (g = this.store && b.enrich && n) && b.highlight;
+    u = (g = this.store && b.enrich && n) && b.highlight;
     c = b.limit || c;
     var t = b.offset || 0;
     c || (c = 100);
     if (l) {
       l.constructor !== Array && (l = [l]);
-      var u = [];
+      var r = [];
       for (let y = 0, v; y < l.length; y++) {
         v = l[y];
         if (D(v)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
         if (v.field && v.tag) {
-          var w = v.tag;
-          if (w.constructor === Array) {
-            for (var z = 0; z < w.length; z++) {
-              u.push(v.field, w[z]);
+          var x = v.tag;
+          if (x.constructor === Array) {
+            for (var z = 0; z < x.length; z++) {
+              r.push(v.field, x[z]);
             }
           } else {
-            u.push(v.field, w);
+            r.push(v.field, x);
           }
         } else {
-          w = Object.keys(v);
-          for (let E = 0, F, A; E < w.length; E++) {
-            if (F = w[E], A = v[F], A.constructor === Array) {
+          x = Object.keys(v);
+          for (let E = 0, F, A; E < x.length; E++) {
+            if (F = x[E], A = v[F], A.constructor === Array) {
               for (z = 0; z < A.length; z++) {
-                u.push(F, A[z]);
+                r.push(F, A[z]);
               }
             } else {
-              u.push(F, A);
+              r.push(F, A);
             }
           }
         }
       }
-      if (!u.length) {
+      if (!r.length) {
         throw Error("Your tag definition within the search options is probably wrong. No valid tags found.");
       }
-      l = u;
+      l = r;
       if (!a) {
         f = [];
-        if (u.length) {
-          for (p = 0; p < u.length; p += 2) {
-            q = Ha.call(this, u[p], u[p + 1], c, t, g), d.push({field:u[p], tag:u[p + 1], result:q});
+        if (r.length) {
+          for (p = 0; p < r.length; p += 2) {
+            q = Ia.call(this, r[p], r[p + 1], c, t, g), d.push({field:r[p], tag:r[p + 1], result:q});
           }
         }
         return f.length ? Promise.all(f).then(function(y) {
@@ -1018,7 +1018,7 @@ V.prototype.search = function(a, c, b, e) {
     h && h.constructor !== Array && (h = [h]);
   }
   h || (h = this.field);
-  u = !e && (this.worker || this.db) && [];
+  r = !e && (this.worker || this.db) && [];
   for (let y = 0, v, E, F; y < h.length; y++) {
     E = h[y];
     let A;
@@ -1026,38 +1026,38 @@ V.prototype.search = function(a, c, b, e) {
     if (e) {
       v = e[y];
     } else {
-      if (w = A || b, z = this.index.get(E), l && (w.enrich = !1), u) {
-        u[y] = z.search(a, c, w);
-        w && g && (w.enrich = g);
+      if (x = A || b, z = this.index.get(E), l && (x.enrich = !1), r) {
+        r[y] = z.search(a, c, x);
+        x && g && (x.enrich = g);
         continue;
       } else {
-        v = z.search(a, c, w), w && g && (w.enrich = g);
+        v = z.search(a, c, x), x && g && (x.enrich = g);
       }
     }
     F = v && (n ? v.length : v.result.length);
     if (l && F) {
-      w = [];
+      x = [];
       z = 0;
-      for (let G = 0, H, Za; G < l.length; G += 2) {
-        H = this.tag.get(l[G]);
-        if (!H) {
+      for (let G = 0, P, Ya; G < l.length; G += 2) {
+        P = this.tag.get(l[G]);
+        if (!P) {
           if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), k) {
             continue;
           } else {
-            return n ? d : new X(d);
+            return n ? d : new W(d);
           }
         }
-        if (Za = (H = H && H.get(l[G + 1])) && H.length) {
-          z++, w.push(H);
+        if (Ya = (P = P && P.get(l[G + 1])) && P.length) {
+          z++, x.push(P);
         } else if (!k) {
-          return n ? d : new X(d);
+          return n ? d : new W(d);
         }
       }
       if (z) {
-        v = ya(v, w);
+        v = za(v, x);
         F = v.length;
         if (!F && !k) {
-          return n ? v : new X(v);
+          return n ? v : new W(v);
         }
         z--;
       }
@@ -1065,78 +1065,74 @@ V.prototype.search = function(a, c, b, e) {
     if (F) {
       f[m] = E, d.push(v), m++;
     } else if (1 === h.length) {
-      return n ? d : new X(d);
+      return n ? d : new W(d);
     }
   }
-  if (u) {
+  if (r) {
     const y = this;
-    return Promise.all(u).then(function(v) {
+    return Promise.all(r).then(function(v) {
       return v.length ? y.search(a, c, b, v) : v;
     });
   }
   if (!m) {
-    return n ? d : new X(d);
+    return n ? d : new W(d);
   }
   if (p && (!g || !this.store)) {
     return d[0];
   }
-  u = [];
+  r = [];
   for (t = 0; t < f.length; t++) {
     e = d[t];
-    g && e.length && "undefined" === typeof e[0].doc && (e = W.call(this, e));
+    g && e.length && "undefined" === typeof e[0].doc && (e = V.call(this, e));
     if (p) {
-      return n ? e : new X(e);
+      return n ? e : new W(e);
     }
     d[t] = {field:f[t], result:e};
   }
-  return q ? Ia(d, c) : r ? Ja(d, a, this.index, this.field, this.C, r) : d;
+  return q ? Ja(d, c) : u ? Ka(d, a, this.index, this.field, this.C, u) : d;
 };
-function Ja(a, c, b, e, d, f) {
+function Ka(a, c, b, e, d, f) {
   let g, k, h;
-  for (let m = 0, n, r, p, q; m < a.length; m++) {
-    let t = a[m].result;
-    n = a[m].field;
-    p = b.get(n);
-    r = p.encoder;
-    h = p.tokenize;
-    q = d[e.indexOf(n)];
-    r !== g && (g = r, k = g.encode(c));
-    for (let u = 0; u < t.length; u++) {
-      let w = "";
-      var l = J(t[u].doc, q);
-      let z = g.encode(l);
-      l = l.split(g.split);
-      for (let y = 0, v, E; y < z.length; y++) {
-        v = z[y];
-        E = l[y];
-        if (!v || !E) {
-          continue;
-        }
-        let F;
-        for (let A = 0, G; A < k.length; A++) {
-          if (G = k[A], "strict" === h) {
-            if (v === G) {
-              w += (w ? " " : "") + f.replace("$1", E);
-              F = !0;
-              break;
-            }
-          } else {
-            const H = v.indexOf(G);
-            if (-1 < H) {
-              w += (w ? " " : "") + E.substring(0, H) + f.replace("$1", E.substring(H, G.length)) + E.substring(H + G.length);
-              F = !0;
-              break;
+  for (let l = 0, m, n, u, p; l < a.length; l++) {
+    let q = a[l].result;
+    m = a[l].field;
+    u = b.get(m);
+    n = u.encoder;
+    h = u.tokenize;
+    p = d[e.indexOf(m)];
+    n !== g && (g = n, k = g.encode(c));
+    for (let t = 0; t < q.length; t++) {
+      let r = "", x = I(q[t].doc, p).split(/\s+/);
+      for (let z = 0, y, v; z < x.length; z++) {
+        y = x[z];
+        v = g.encode(y).join(" ");
+        let E;
+        if (v && y) {
+          for (let F = 0, A; F < k.length; F++) {
+            if (A = k[F], "strict" === h) {
+              if (v === A) {
+                r += (r ? " " : "") + f.replace("$1", y);
+                E = !0;
+                break;
+              }
+            } else {
+              const G = v.indexOf(A);
+              if (-1 < G) {
+                r += (r ? " " : "") + y.substring(0, G) + f.replace("$1", y.substring(G, A.length)) + y.substring(G + A.length);
+                E = !0;
+                break;
+              }
             }
           }
         }
-        F || (w += (w ? " " : "") + l[y]);
+        E || (r += (r ? " " : "") + x[z]);
       }
-      t[u].highlight = w;
+      q[t].highlight = r;
     }
   }
   return a;
 }
-function Ia(a, c) {
+function Ja(a, c) {
   const b = [], e = C();
   for (let d = 0, f, g; d < a.length; d++) {
     f = a[d];
@@ -1155,7 +1151,7 @@ function Ia(a, c) {
   }
   return b;
 }
-function Ha(a, c, b, e, d) {
+function Ia(a, c, b, e, d) {
   let f = this.tag.get(a);
   if (!f) {
     return console.warn("Tag '" + a + "' was not found"), [];
@@ -1164,11 +1160,11 @@ function Ha(a, c, b, e, d) {
     if (a > b || e) {
       f = f.slice(e, e + b);
     }
-    d && (f = W.call(this, f));
+    d && (f = V.call(this, f));
     return f;
   }
 }
-function W(a) {
+function V(a) {
   if (!this || !this.store) {
     return a;
   }
@@ -1178,33 +1174,33 @@ function W(a) {
   }
   return c;
 }
-;function V(a) {
-  if (!this || this.constructor !== V) {
-    return new V(a);
+;function U(a) {
+  if (!this || this.constructor !== U) {
+    return new U(a);
   }
   const c = a.document || a.doc || a;
   var b;
   this.C = [];
   this.field = [];
   this.J = [];
-  this.key = (b = c.key || c.id) && Ka(b, this.J) || "id";
+  this.key = (b = c.key || c.id) && La(b, this.J) || "id";
   this.reg = (this.fastupdate = !!a.fastupdate) ? new Map() : new Set();
   this.A = (b = c.store || null) && b && !0 !== b && [];
   this.store = b && new Map();
-  this.cache = (b = a.cache || null) && new Y(b);
+  this.cache = (b = a.cache || null) && new X(b);
   a.cache = !1;
   this.priority = a.priority || 4;
   b = new Map();
   let e = c.index || c.field || c;
   D(e) && (e = [e]);
   for (let d = 0, f, g; d < e.length; d++) {
-    f = e[d], D(f) || (g = f, f = f.field), g = I(g) ? Object.assign({}, a, g) : a, b.set(f, new O(g, this.reg)), g.custom ? this.C[d] = g.custom : (this.C[d] = Ka(f, this.J), g.filter && ("string" === typeof this.C[d] && (this.C[d] = new String(this.C[d])), this.C[d].I = g.filter)), this.field[d] = f;
+    f = e[d], D(f) || (g = f, f = f.field), g = H(g) ? Object.assign({}, a, g) : a, b.set(f, new N(g, this.reg)), g.custom ? this.C[d] = g.custom : (this.C[d] = La(f, this.J), g.filter && ("string" === typeof this.C[d] && (this.C[d] = new String(this.C[d])), this.C[d].I = g.filter)), this.field[d] = f;
   }
   if (this.A) {
     a = c.store;
     D(a) && (a = [a]);
     for (let d = 0, f, g; d < a.length; d++) {
-      f = a[d], g = f.field || f, f.custom ? (this.A[d] = f.custom, f.custom.U = g) : (this.A[d] = Ka(g, this.J), f.filter && ("string" === typeof this.A[d] && (this.A[d] = new String(this.A[d])), this.A[d].I = f.filter));
+      f = a[d], g = f.field || f, f.custom ? (this.A[d] = f.custom, f.custom.U = g) : (this.A[d] = La(g, this.J), f.filter && ("string" === typeof this.A[d] && (this.A[d] = new String(this.A[d])), this.A[d].I = f.filter));
     }
   }
   this.index = b;
@@ -1220,14 +1216,14 @@ function W(a) {
         if (!g) {
           throw Error("The tag field from the document descriptor is undefined.");
         }
-        f.custom ? this.B[d] = f.custom : (this.B[d] = Ka(g, this.J), f.filter && ("string" === typeof this.B[d] && (this.B[d] = new String(this.B[d])), this.B[d].I = f.filter));
+        f.custom ? this.B[d] = f.custom : (this.B[d] = La(g, this.J), f.filter && ("string" === typeof this.B[d] && (this.B[d] = new String(this.B[d])), this.B[d].I = f.filter));
         this.T[d] = g;
         this.tag.set(g, new Map());
       }
     }
   }
 }
-function Ka(a, c) {
+function La(a, c) {
   const b = a.split(":");
   let e = 0;
   for (let d = 0; d < b.length; d++) {
@@ -1236,15 +1232,15 @@ function Ka(a, c) {
   e < b.length && (b.length = e);
   return 1 < e ? b : b[0];
 }
-x = V.prototype;
-x.append = function(a, c) {
+w = U.prototype;
+w.append = function(a, c) {
   return this.add(a, c, !0);
 };
-x.update = function(a, c) {
+w.update = function(a, c) {
   return this.remove(a).add(a, c);
 };
-x.remove = function(a) {
-  I(a) && (a = J(a, this.key));
+w.remove = function(a) {
+  H(a) && (a = I(a, this.key));
   for (var c of this.index.values()) {
     c.remove(a, !0);
   }
@@ -1264,7 +1260,7 @@ x.remove = function(a) {
   this.cache && this.cache.remove(a);
   return this;
 };
-x.clear = function() {
+w.clear = function() {
   const a = [];
   for (const c of this.index.values()) {
     const b = c.clear();
@@ -1279,25 +1275,25 @@ x.clear = function() {
   this.cache && this.cache.clear();
   return a.length ? Promise.all(a) : this;
 };
-x.contain = function(a) {
+w.contain = function(a) {
   return this.reg.has(a);
 };
-x.cleanup = function() {
+w.cleanup = function() {
   for (const a of this.index.values()) {
     a.cleanup();
   }
   return this;
 };
-x.get = function(a) {
+w.get = function(a) {
   return this.store.get(a) || null;
 };
-x.set = function(a, c) {
-  "object" === typeof a && (c = a, a = J(c, this.key));
+w.set = function(a, c) {
+  "object" === typeof a && (c = a, a = I(c, this.key));
   this.store.set(a, c);
   return this;
 };
-x.searchCache = La;
-x.export = function(a, c, b = 0, e = 0) {
+w.searchCache = Ma;
+w.export = function(a, c, b = 0, e = 0) {
   if (b < this.field.length) {
     const g = this.field[b];
     if ((c = this.index.get(g).export(a, g, b, e = 1)) && c.then) {
@@ -1328,9 +1324,9 @@ x.export = function(a, c, b = 0, e = 0) {
     default:
       return;
   }
-  return U.call(this, a, c, d, f, b, e);
+  return ta.call(this, a, c, d, f, b, e);
 };
-x.import = function(a, c) {
+w.import = function(a, c) {
   var b = a.split(".");
   "json" === b[b.length - 1] && b.pop();
   a = 2 < b.length ? b[0] : "";
@@ -1356,10 +1352,10 @@ x.import = function(a, c) {
     }
   }
 };
-ia(V.prototype);
-function La(a, c, b) {
+ia(U.prototype);
+function Ma(a, c, b) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
-  this.cache || (this.cache = new Y());
+  this.cache || (this.cache = new X());
   let e = this.cache.get(a);
   if (!e) {
     e = this.search(a, c, b);
@@ -1374,66 +1370,115 @@ function La(a, c, b) {
   }
   return e;
 }
-function Y(a) {
+function X(a) {
   this.limit = a && !0 !== a ? a : 1000;
   this.cache = new Map();
   this.h = "";
 }
-Y.prototype.set = function(a, c) {
+X.prototype.set = function(a, c) {
   this.cache.set(this.h = a, c);
   this.cache.size > this.limit && this.cache.delete(this.cache.keys().next().value);
 };
-Y.prototype.get = function(a) {
+X.prototype.get = function(a) {
   const c = this.cache.get(a);
   c && this.h !== a && (this.cache.delete(a), this.cache.set(this.h = a, c));
   return c;
 };
-Y.prototype.remove = function(a) {
+X.prototype.remove = function(a) {
   for (const c of this.cache) {
     const b = c[0];
     c[1].includes(a) && this.cache.delete(b);
   }
 };
-Y.prototype.clear = function() {
+X.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-const Ma = {normalize:!1, numeric:!1};
-const Na = {};
-const Oa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
-const Pa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Qa = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-const Ra = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
-var Sa = {W:Ma, V:Na, X:Na, LatinBalance:{dedupe:!0, mapper:Oa}, LatinAdvanced:{dedupe:!0, mapper:Oa, matcher:Pa, replacer:Qa}, LatinExtra:{dedupe:!0, mapper:Oa, replacer:Qa.concat([/(?!^)[aeo]/g, ""]), matcher:Pa}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
+const Na = {normalize:!1, numeric:!1};
+const Oa = {};
+const Pa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
+const Qa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Ra = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+const Sa = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
+var Ta = {W:Na, V:Oa, X:Oa, LatinBalance:{dedupe:!0, mapper:Pa}, LatinAdvanced:{dedupe:!0, mapper:Pa, matcher:Qa, replacer:Ra}, LatinExtra:{dedupe:!0, mapper:Pa, replacer:Ra.concat([/(?!^)[aeo]/g, ""]), matcher:Qa}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (let b = 0; b < a.length; b++) {
     var c = a[b];
-    let e = c.charAt(0), d = Ra[e];
-    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Ra[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
+    let e = c.charAt(0), d = Sa[e];
+    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Sa[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
     }
     a[b] = e;
   }
-}}, LatinExact:Ma, LatinDefault:Na, LatinSimple:Na};
-const Ta = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
-O.prototype.add = function(a, c, b, e) {
+}}, LatinExact:Na, LatinDefault:Oa, LatinSimple:Oa};
+N.prototype.remove = function(a, c) {
+  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (b) {
+    if (this.fastupdate) {
+      for (let e = 0, d; e < b.length; e++) {
+        if (d = b[e]) {
+          if (2 > d.length) {
+            d.pop();
+          } else {
+            const f = d.indexOf(a);
+            f === b.length - 1 ? d.pop() : d.splice(f, 1);
+          }
+        }
+      }
+    } else {
+      Y(this.map, a), this.depth && Y(this.ctx, a);
+    }
+    c || this.reg.delete(a);
+  }
+  this.cache && this.cache.remove(a);
+  return this;
+};
+function Y(a, c) {
+  let b = 0;
+  var e = "undefined" === typeof c;
+  if (a.constructor === Array) {
+    for (let d = 0, f, g; d < a.length; d++) {
+      if ((f = a[d]) && f.length) {
+        if (e) {
+          b++;
+        } else {
+          if (g = f.indexOf(c), 0 <= g) {
+            1 < f.length ? (f.splice(g, 1), b++) : delete a[d];
+            break;
+          } else {
+            b++;
+          }
+        }
+      }
+    }
+  } else {
+    for (let d of a.entries()) {
+      e = d[0];
+      const f = Y(d[1], c);
+      f ? b += f : a.delete(e);
+    }
+  }
+  return b;
+}
+;const Ua = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+N.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
       return this.update(a, c);
     }
     c = this.encoder.encode(c);
     if (e = c.length) {
-      const l = C(), m = C(), n = this.depth, r = this.resolution;
+      const l = C(), m = C(), n = this.depth, u = this.resolution;
       for (let p = 0; p < e; p++) {
         let q = c[this.rtl ? e - 1 - p : p];
         var d = q.length;
         if (d && (n || !m[q])) {
-          var f = this.score ? this.score(c, q, p, null, 0) : Ua(r, e, p), g = "";
+          var f = this.score ? this.score(c, q, p, null, 0) : Va(u, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
-                for (let t = 0, u; t < d; t++) {
+                for (let t = 0, r; t < d; t++) {
                   for (f = d; f > t; f--) {
                     g = q.substring(t, f);
-                    u = this.rtl ? d - 1 - t : t;
-                    var k = this.score ? this.score(c, q, p, g, u) : Ua(r, e, p, d, u);
+                    r = this.rtl ? d - 1 - t : t;
+                    var k = this.score ? this.score(c, q, p, g, r) : Va(u, e, p, d, r);
                     Z(this, m, g, k, a, b);
                   }
                 }
@@ -1444,7 +1489,7 @@ O.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = q[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, q, p, g, k) : Ua(r, e, p, d, k);
+                  var h = this.score ? this.score(c, q, p, g, k) : Va(u, e, p, d, k);
                   Z(this, m, g, h, a, b);
                 }
                 g = "";
@@ -1461,8 +1506,8 @@ O.prototype.add = function(a, c, b, e) {
                 for (d = C(), g = this.S, f = q, k = Math.min(n + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((q = c[this.rtl ? e - 1 - p - h : p + h]) && !d[q]) {
                     d[q] = 1;
-                    const t = this.score ? this.score(c, f, p, q, h - 1) : Ua(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), u = this.bidirectional && q > f;
-                    Z(this, l, u ? f : q, t, a, b, u ? q : f);
+                    const t = this.score ? this.score(c, f, p, q, h - 1) : Va(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), r = this.bidirectional && q > f;
+                    Z(this, l, r ? f : q, t, a, b, r ? q : f);
                   }
                 }
               }
@@ -1480,11 +1525,11 @@ function Z(a, c, b, e, d, f, g) {
     g ? (c = h || (c[b] = C()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = []), k = k[e] || (k[e] = []), f && k.includes(d) || (k.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(k) : a.reg.set(d, [k])));
   }
 }
-function Ua(a, c, b, e, d) {
+function Va(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
-;O.prototype.search = function(a, c, b) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+;N.prototype.search = function(a, c, b) {
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   var e = [], d = 0;
   if (b) {
     a = b.query || a;
@@ -1501,11 +1546,11 @@ function Ua(a, c, b, e, d) {
   b = a.length;
   c = c || (k ? 100 : 0);
   if (1 === b) {
-    return g = c, (c = Va(this, a[0], "")) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Wa(this, a[0], "")) && c.length ? Aa.call(this, c, g, d) : [];
   }
   f = this.depth && !1 !== f;
   if (2 === b && f && !g) {
-    return g = c, (c = Va(this, a[1], a[0])) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Wa(this, a[1], a[0])) && c.length ? Aa.call(this, c, g, d) : [];
   }
   k = C();
   let l = 0;
@@ -1517,29 +1562,29 @@ function Ua(a, c, b, e, d) {
   for (let q, t; l < b; l++) {
     if ((t = a[l]) && !k[t]) {
       k[t] = 1;
-      q = Va(this, t, m);
+      q = Wa(this, t, m);
       a: {
         f = q;
-        var n = e, r = g, p = h;
-        let u = [];
+        var n = e, u = g, p = h;
+        let r = [];
         if (f && f.length) {
           if (f.length <= p) {
             n.push(f);
             q = void 0;
             break a;
           }
-          for (let w = 0, z; w < p; w++) {
-            if (z = f[w]) {
-              u[w] = z;
+          for (let x = 0, z; x < p; x++) {
+            if (z = f[x]) {
+              r[x] = z;
             }
           }
-          if (u.length) {
-            n.push(u);
+          if (r.length) {
+            n.push(r);
             q = void 0;
             break a;
           }
         }
-        q = r ? void 0 : u;
+        q = u ? void 0 : r;
       }
       if (q) {
         e = q;
@@ -1554,77 +1599,34 @@ function Ua(a, c, b, e, d) {
     e = a.length;
     m = a;
     if (1 < e) {
-      m = wa(a, h, c, d, g);
+      m = xa(a, h, c, d, g);
     } else if (1 === e) {
-      g = za.call(null, a[0], c, d);
+      g = Aa.call(null, a[0], c, d);
       break a;
     }
     g = m;
   }
   return g;
 };
-function Va(a, c, b) {
+function Wa(a, c, b) {
   let e;
   b && (e = a.bidirectional && c > b) && (e = b, b = c, c = e);
   a = b ? (a = a.ctx.get(b)) && a.get(c) : a.map.get(c);
   return a;
 }
-;O.prototype.remove = function(a, c) {
-  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (b) {
-    if (this.fastupdate) {
-      for (let e = 0, d; e < b.length; e++) {
-        if (d = b[e]) {
-          if (2 > d.length) {
-            d.pop();
-          } else {
-            const f = d.indexOf(a);
-            f === b.length - 1 ? d.pop() : d.splice(f, 1);
-          }
-        }
-      }
-    } else {
-      Wa(this.map, a), this.depth && Wa(this.ctx, a);
-    }
-    c || this.reg.delete(a);
-  }
-  this.cache && this.cache.remove(a);
-  return this;
-};
-function Wa(a, c) {
-  let b = 0;
-  if (a.constructor === Array) {
-    for (let e = 0, d, f; e < a.length; e++) {
-      if ((d = a[e]) && d.length) {
-        if (f = d.indexOf(c), 0 <= f) {
-          1 < d.length ? (d.splice(f, 1), b++) : delete a[e];
-          break;
-        } else {
-          b++;
-        }
-      }
-    }
-  } else {
-    for (let e of a.entries()) {
-      const d = e[0], f = Wa(e[1], c);
-      f ? b += f : a.delete(d);
-    }
-  }
-  return b;
-}
-;function O(a, c) {
-  if (!this || this.constructor !== O) {
-    return new O(a);
+;function N(a, c) {
+  if (!this || this.constructor !== N) {
+    return new N(a);
   }
   if (a) {
     var b = D(a) ? a : a.preset;
-    b && (Ta[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ta[b], a));
+    b && (Ua[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ua[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Sa[a.encoder] : a.encode || a.encoder || {};
-  this.encoder = d.encode ? d : "object" === typeof d ? new K(d) : {encode:d};
+  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Ta[a.encoder] : a.encode || a.encoder || {};
+  this.encoder = d.encode ? d : "object" === typeof d ? new J(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
   this.depth = "strict" === b && e.depth || 0;
@@ -1638,51 +1640,37 @@ function Wa(a, c) {
   this.reg = c || (this.fastupdate ? new Map() : new Set());
   this.S = e.resolution || 3;
   this.rtl = d.rtl || a.rtl || !1;
-  this.cache = (b = a.cache || null) && new Y(b);
+  this.cache = (b = a.cache || null) && new X(b);
   this.priority = a.priority || 4;
 }
-x = O.prototype;
-x.clear = function() {
+w = N.prototype;
+w.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
   this.cache && this.cache.clear();
   return this;
 };
-x.append = function(a, c) {
+w.append = function(a, c) {
   return this.add(a, c, !0);
 };
-x.contain = function(a) {
+w.contain = function(a) {
   return this.reg.has(a);
 };
-x.update = function(a, c) {
+w.update = function(a, c) {
   const b = this, e = this.remove(a);
   return e && e.then ? e.then(() => b.add(a, c)) : this.add(a, c);
 };
-function Xa(a) {
-  let c = 0;
-  if (a.constructor === Array) {
-    for (let b = 0, e; b < a.length; b++) {
-      (e = a[b]) && (c += e.length);
-    }
-  } else {
-    for (const b of a.entries()) {
-      const e = b[0], d = Xa(b[1]);
-      d ? c += d : a.delete(e);
-    }
-  }
-  return c;
-}
-x.cleanup = function() {
+w.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  Xa(this.map);
-  this.depth && Xa(this.ctx);
+  Y(this.map);
+  this.depth && Y(this.ctx);
   return this;
 };
-x.searchCache = La;
-x.export = function(a, c, b = 0, e = 0) {
+w.searchCache = Ma;
+w.export = function(a, c, b = 0, e = 0) {
   let d, f;
   switch(e) {
     case 0:
@@ -1704,9 +1692,9 @@ x.export = function(a, c, b = 0, e = 0) {
     default:
       return;
   }
-  return U.call(this, a, c, d, f, b, e);
+  return ta.call(this, a, c, d, f, b, e);
 };
-x.import = function(a, c) {
+w.import = function(a, c) {
   if (c) {
     switch("string" === typeof c && (c = JSON.parse(c)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), 3 === a.length && a.shift(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
@@ -1721,7 +1709,7 @@ x.import = function(a, c) {
     }
   }
 };
-x.serialize = function(a = !0) {
+w.serialize = function(a = !0) {
   let c = "", b = "", e = "";
   if (this.reg.size) {
     let f;
@@ -1729,11 +1717,11 @@ x.serialize = function(a = !0) {
       f || (f = typeof d), c += (c ? "," : "") + ("string" === f ? '"' + d + '"' : d);
     }
     c = "index.reg=new Set([" + c + "]);";
-    b = ta(this.map, f);
+    b = ua(this.map, f);
     b = "index.map=new Map([" + b + "]);";
     for (const g of this.ctx.entries()) {
       d = g[0];
-      let k = ta(g[1], f);
+      let k = ua(g[1], f);
       k = "new Map([" + k + "])";
       k = '["' + d + '",' + k + "]";
       e += (e ? "," : "") + k;
@@ -1742,11 +1730,11 @@ x.serialize = function(a = !0) {
   }
   return a ? "function inject(index){" + c + b + e + "}" : c + b + e;
 };
-ia(O.prototype);
+ia(N.prototype);
 C();
-const Ya = {Index:O, Charset:Sa, Encoder:K, Document:V, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, $a = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
-let ab;
-(ab = $a.define) && ab.amd ? ab([], function() {
-  return Ya;
-}) : "object" === typeof $a.exports ? $a.exports = Ya : $a.FlexSearch = Ya;
+const Xa = {Index:N, Charset:Ta, Encoder:J, Document:U, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, Za = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
+let $a;
+($a = Za.define) && $a.amd ? $a([], function() {
+  return Xa;
+}) : "object" === typeof Za.exports ? Za.exports = Xa : Za.FlexSearch = Xa;
 }(this||self));
diff --git a/dist/flexsearch.compact.min.js b/dist/flexsearch.compact.min.js
index 40cc71a..0760219 100644
--- a/dist/flexsearch.compact.min.js
+++ b/dist/flexsearch.compact.min.js
@@ -1,22 +1,22 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle)
+ * FlexSearch.js v0.8.149 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-(function(self){'use strict';var x;function B(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(k){return a(b(k))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function C(){return Object.create(null)}function D(a){return"string"===typeof a}
-function H(a){return"object"===typeof a}function I(a,c){if(D(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function aa(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ba=/[^\p{L}\p{N}]+/u,ca=/(\d{3})/g,da=/(\D)(\d{3})/g,ea=/(\d{3})(\D)/g,fa=/[\u0300-\u036f]/g;function K(a={}){if(!this||this.constructor!==K)return new K(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}x=K.prototype;
-x.assign=function(a){this.normalize=B(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
+(function(self){'use strict';var w;function B(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(k){return a(b(k))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function C(){return Object.create(null)}function D(a){return"string"===typeof a}
+function G(a){return"object"===typeof a}function H(a,c){if(D(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function aa(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ba=/[^\p{L}\p{N}]+/u,ca=/(\d{3})/g,da=/(\D)(\d{3})/g,ea=/(\d{3})(\D)/g,fa=/[\u0300-\u036f]/g;function J(a={}){if(!this||this.constructor!==J)return new J(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}w=J.prototype;
+w.assign=function(a){this.normalize=B(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
 this.numeric=B(a.numeric,e)}else{try{this.split=B(this.split,ba)}catch(d){this.split=/\s+/}this.numeric=B(a.numeric,B(this.numeric,!0))}this.prepare=B(a.prepare,null,this.prepare);this.finalize=B(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:B(b&&new Set(b),null,this.filter);this.dedupe=B(a.dedupe,!1,this.dedupe);this.matcher=B((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=B((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=B((b=a.stemmer)&&new Map(b),
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-(this.D?"|":"")+d;return this};x.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.D+=(this.D?"|":"")+a;this.N=null;this.cache&&L(this);return this};x.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&L(this);return this};
-x.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&L(this);return this};x.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&L(this);return this};
-x.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&L(this);return this};
-x.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.F.has(a))return this.F.get(a)}else this.H=setTimeout(L,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=fa?a.normalize("NFKD").replace(fa,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(da,"$1 $2").replace(ea,"$1 $2").replace(ca,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
-[],e=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,k;f<e.length;f++)if((g=k=e[f])&&!(g.length<this.minlength))if(c)b.push(g);else if(!this.filter||("function"===typeof this.filter?this.filter(g):!this.filter.has(g))){if(this.cache&&g.length<=this.L)if(this.H){var d=this.G.get(g);if(d||""===d){d&&b.push(d);continue}}else this.H=setTimeout(L,50,this);this.stemmer&&2<g.length&&(this.N||(this.N=new RegExp("(?!^)("+this.D+")$")),d=g,g=g.replace(this.N,h=>this.stemmer.get(h)),d!==g&&this.filter&&
+(this.D?"|":"")+d;return this};w.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.D+=(this.D?"|":"")+a;this.N=null;this.cache&&K(this);return this};w.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&K(this);return this};
+w.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&K(this);return this};w.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&K(this);return this};
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+X.prototype.get=function(a){const c=this.cache.get(a);c&&this.h!==a&&(this.cache.delete(a),this.cache.set(this.h=a,c));return c};X.prototype.remove=function(a){for(const c of this.cache){const b=c[0];c[1].includes(a)&&this.cache.delete(b)}};X.prototype.clear=function(){this.cache.clear();this.h=""};const Na={normalize:!1,numeric:!1};const Oa={};const Pa=new Map([["b","p"],["v","f"],["w","f"],["z","s"],["x","s"],["d","t"],["n","m"],["c","k"],["g","k"],["j","k"],["q","k"],["i","e"],["y","e"],["u","o"]]);const Qa=new Map([["ae","a"],["oe","o"],["sh","s"],["kh","k"],["th","t"],["ph","f"],["pf","f"]]),Ra=[/([^aeo])h(.)/g,"$1$2",/([aeo])h([^aeo]|$)/g,"$1$2",/(.)\1+/g,"$1"];const Sa={a:"",e:"",i:"",o:"",u:"",y:"",b:1,f:1,p:1,v:1,c:2,g:2,j:2,k:2,q:2,s:2,x:2,z:2,"\u00df":2,d:3,t:3,l:4,m:5,n:5,r:6};var Ta={W:Na,V:Oa,X:Oa,LatinBalance:{dedupe:!0,mapper:Pa},LatinAdvanced:{dedupe:!0,mapper:Pa,matcher:Qa,replacer:Ra},LatinExtra:{dedupe:!0,mapper:Pa,replacer:Ra.concat([/(?!^)[aeo]/g,""]),matcher:Qa},LatinSoundex:{dedupe:!1,include:{letter:!0},finalize:function(a){for(let b=0;b<a.length;b++){var c=a[b];let e=c.charAt(0),d=Sa[e];for(let f=1,g;f<c.length&&(g=c.charAt(f),"h"===g||"w"===g||!(g=Sa[g])||g===d||(e+=g,d=g,4!==e.length));f++);a[b]=e}}},LatinExact:Na,LatinDefault:Oa,LatinSimple:Oa};N.prototype.remove=function(a,c){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let e=0,d;e<b.length;e++){if(d=b[e])if(2>d.length)d.pop();else{const f=d.indexOf(a);f===b.length-1?d.pop():d.splice(f,1)}}else Y(this.map,a),this.depth&&Y(this.ctx,a);c||this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
+function Y(a,c){let b=0;var e="undefined"===typeof c;if(a.constructor===Array)for(let d=0,f,g;d<a.length;d++){if((f=a[d])&&f.length)if(e)b++;else if(g=f.indexOf(c),0<=g){1<f.length?(f.splice(g,1),b++):delete a[d];break}else b++}else for(let d of a.entries()){e=d[0];const f=Y(d[1],c);f?b+=f:a.delete(e)}return b};const Ua={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};N.prototype.add=function(a,c,b,e){if(c&&(a||0===a)){if(!e&&!b&&this.reg.has(a))return this.update(a,c);c=this.encoder.encode(c);if(e=c.length){const l=C(),m=C(),n=this.depth,u=this.resolution;for(let p=0;p<e;p++){let q=c[this.rtl?e-1-p:p];var d=q.length;if(d&&(n||!m[q])){var f=this.score?this.score(c,q,p,null,0):Va(u,e,p),g="";switch(this.tokenize){case "full":if(2<d){for(let r=0,t;r<d;r++)for(f=d;f>r;f--){g=q.substring(r,f);t=this.rtl?d-1-r:r;var k=this.score?this.score(c,q,p,g,t):Va(u,e,p,d,t);
+Z(this,m,g,k,a,b)}break}case "bidirectional":case "reverse":if(1<d){for(k=d-1;0<k;k--){g=q[this.rtl?d-1-k:k]+g;var h=this.score?this.score(c,q,p,g,k):Va(u,e,p,d,k);Z(this,m,g,h,a,b)}g=""}case "forward":if(1<d){for(k=0;k<d;k++)g+=q[this.rtl?d-1-k:k],Z(this,m,g,f,a,b);break}default:if(Z(this,m,q,f,a,b),n&&1<e&&p<e-1)for(d=C(),g=this.S,f=q,k=Math.min(n+1,this.rtl?p+1:e-p),d[f]=1,h=1;h<k;h++)if((q=c[this.rtl?e-1-p-h:p+h])&&!d[q]){d[q]=1;const r=this.score?this.score(c,f,p,q,h-1):Va(g+(e/2>g?0:1),e,p,
+k-1,h-1),t=this.bidirectional&&q>f;Z(this,l,t?f:q,r,a,b,t?q:f)}}}}this.fastupdate||this.reg.add(a)}}return this};function Z(a,c,b,e,d,f,g){let k=g?a.ctx:a.map,h;if(!c[b]||g&&!(h=c[b])[g])g?(c=h||(c[b]=C()),c[g]=1,(h=k.get(g))?k=h:k.set(g,k=new Map)):c[b]=1,(h=k.get(b))?k=h:k.set(b,k=[]),k=k[e]||(k[e]=[]),f&&k.includes(d)||(k.push(d),a.fastupdate&&((c=a.reg.get(d))?c.push(k):a.reg.set(d,[k])))}function Va(a,c,b,e,d){return b&&1<a?c+(e||0)<=a?b+(d||0):(a-1)/(c+(e||0))*(b+(d||0))+1|0:0};N.prototype.search=function(a,c,b){b||(!c&&G(a)?(b=a,a=""):G(c)&&(b=c,c=0));var e=[],d=0;if(b){a=b.query||a;c=b.limit||c;d=b.offset||0;var f=b.context;var g=b.suggest;var k=!0;var h=b.resolution}else k=!0;a=this.encoder.encode(a);b=a.length;c=c||(k?100:0);if(1===b)return g=c,(c=Wa(this,a[0],""))&&c.length?Aa.call(this,c,g,d):[];f=this.depth&&!1!==f;if(2===b&&f&&!g)return g=c,(c=Wa(this,a[1],a[0]))&&c.length?Aa.call(this,c,g,d):[];k=C();let l=0;if(1<b&&f){var m=a[0];l=1}h||0===h||(h=m?this.S:this.resolution);
+for(let q,r;l<b;l++){if((r=a[l])&&!k[r]){k[r]=1;q=Wa(this,r,m);a:{f=q;var n=e,u=g,p=h;let t=[];if(f&&f.length){if(f.length<=p){n.push(f);q=void 0;break a}for(let x=0,z;x<p;x++)if(z=f[x])t[x]=z;if(t.length){n.push(t);q=void 0;break a}}q=u?void 0:t}if(q){e=q;break}m&&(g&&q&&e.length||(m=r))}g&&m&&l===b-1&&!e.length&&(h=this.resolution,m="",l=-1,k=C())}a:{a=e;e=a.length;m=a;if(1<e)m=xa(a,h,c,d,g);else if(1===e){g=Aa.call(null,a[0],c,d);break a}g=m}return g};
+function Wa(a,c,b){let e;b&&(e=a.bidirectional&&c>b)&&(e=b,b=c,c=e);a=b?(a=a.ctx.get(b))&&a.get(c):a.map.get(c);return a};function N(a,c){if(!this||this.constructor!==N)return new N(a);if(a){var b=D(a)?a:a.preset;b&&(a=Object.assign({},Ua[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=D(a.encoder)?Ta[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new J(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
+this.score=a.score||null;b=!1;this.map=new Map;this.ctx=new Map;this.reg=c||(this.fastupdate?new Map:new Set);this.S=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new X(b);this.priority=a.priority||4}w=N.prototype;w.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};w.append=function(a,c){return this.add(a,c,!0)};w.contain=function(a){return this.reg.has(a)};
+w.update=function(a,c){const b=this,e=this.remove(a);return e&&e.then?e.then(()=>b.add(a,c)):this.add(a,c)};w.cleanup=function(){if(!this.fastupdate)return this;Y(this.map);this.depth&&Y(this.ctx);return this};w.searchCache=Ma;w.export=function(a,c,b=0,e=0){let d,f;switch(e){case 0:d="reg";f=ra(this.reg);break;case 1:d="cfg";f=null;break;case 2:d="map";f=na(this.map,this.reg.size);break;case 3:d="ctx";f=pa(this.ctx,this.reg.size);break;default:return}return ta.call(this,a,c,d,f,b,e)};
+w.import=function(a,c){if(c)switch("string"===typeof c&&(c=JSON.parse(c)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=sa(c,this.reg);break;case "map":this.map=oa(c,this.map);break;case "ctx":this.ctx=qa(c,this.ctx)}};
+w.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=ua(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let k=ua(g[1],f);k="new Map(["+k+"])";k='["'+d+'",'+k+"]";e+=(e?",":"")+k}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};ia(N.prototype);C();const Ya={Index:N,Charset:Ta,Encoder:J,Document:U,Worker:null,Resolver:null,IndexedDB:null,Language:{}},Za="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let $a;($a=Za.define)&&$a.amd?$a([],function(){return Ya}):"object"===typeof Za.exports?Za.exports=Ya:Za.FlexSearch=Ya;}(this||self));
diff --git a/dist/flexsearch.compact.module.debug.js b/dist/flexsearch.compact.module.debug.js
index e6c0495..7676502 100644
--- a/dist/flexsearch.compact.module.debug.js
+++ b/dist/flexsearch.compact.module.debug.js
@@ -1,11 +1,11 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle/Debug)
+ * FlexSearch.js v0.8.149 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var x;
+var w;
 function B(a, c, b) {
   const e = typeof b, d = typeof a;
   if ("undefined" !== e) {
@@ -49,10 +49,10 @@ function C() {
 function D(a) {
   return "string" === typeof a;
 }
-function I(a) {
+function H(a) {
   return "object" === typeof a;
 }
-function J(a, c) {
+function I(a, c) {
   if (D(c)) {
     a = a[c];
   } else {
@@ -70,9 +70,9 @@ function aa(a) {
   return c;
 }
 ;const ba = /[^\p{L}\p{N}]+/u, ca = /(\d{3})/g, da = /(\D)(\d{3})/g, ea = /(\d{3})(\D)/g, fa = /[\u0300-\u036f]/g;
-function K(a = {}) {
-  if (!this || this.constructor !== K) {
-    return new K(...arguments);
+function J(a = {}) {
+  if (!this || this.constructor !== J) {
+    return new J(...arguments);
   }
   if (arguments.length) {
     for (a = 0; a < arguments.length; a++) {
@@ -82,8 +82,8 @@ function K(a = {}) {
     this.assign(a);
   }
 }
-x = K.prototype;
-x.assign = function(a) {
+w = J.prototype;
+w.assign = function(a) {
   this.normalize = B(a.normalize, !0, this.normalize);
   let c = a.include, b = c || a.exclude || a.split, e;
   if (b || "" === b) {
@@ -147,20 +147,20 @@ x.assign = function(a) {
   }
   return this;
 };
-x.addStemmer = function(a, c) {
+w.addStemmer = function(a, c) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, c);
   this.D += (this.D ? "|" : "") + a;
   this.N = null;
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addFilter = function(a) {
+w.addFilter = function(a) {
   "function" === typeof a ? this.filter = a : (this.filter || (this.filter = new Set()), this.filter.add(a));
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addMapper = function(a, c) {
+w.addMapper = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -169,10 +169,10 @@ x.addMapper = function(a, c) {
   }
   this.mapper || (this.mapper = new Map());
   this.mapper.set(a, c);
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addMatcher = function(a, c) {
+w.addMatcher = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -183,26 +183,26 @@ x.addMatcher = function(a, c) {
   this.matcher.set(a, c);
   this.h += (this.h ? "|" : "") + a;
   this.M = null;
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.addReplacer = function(a, c) {
+w.addReplacer = function(a, c) {
   if ("string" === typeof a) {
     return this.addMatcher(a, c);
   }
   this.replacer || (this.replacer = []);
   this.replacer.push(a, c);
-  this.cache && L(this);
+  this.cache && K(this);
   return this;
 };
-x.encode = function(a) {
+w.encode = function(a) {
   if (this.cache && a.length <= this.K) {
     if (this.H) {
       if (this.F.has(a)) {
         return this.F.get(a);
       }
     } else {
-      this.H = setTimeout(L, 50, this);
+      this.H = setTimeout(K, 50, this);
     }
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = fa ? a.normalize("NFKD").replace(fa, "").toLowerCase() : a.toLowerCase());
@@ -224,7 +224,7 @@ x.encode = function(a) {
                 continue;
               }
             } else {
-              this.H = setTimeout(L, 50, this);
+              this.H = setTimeout(K, 50, this);
             }
           }
           this.stemmer && 2 < g.length && (this.N || (this.N = new RegExp("(?!^)(" + this.D + ")$")), d = g, g = g.replace(this.N, h => this.stemmer.get(h)), d !== g && this.filter && g.length >= this.minlength && ("function" === typeof this.filter ? !this.filter(g) : this.filter.has(g)) && (g = ""));
@@ -251,12 +251,12 @@ x.encode = function(a) {
   this.cache && a.length <= this.K && (this.F.set(a, b), this.F.size > this.R && (this.F.clear(), this.K = this.K / 1.1 | 0));
   return b;
 };
-function L(a) {
+function K(a) {
   a.H = null;
   a.F.clear();
   a.G.clear();
 }
-;let M, N;
+;let L, M;
 async function ha(a) {
   a = a.data;
   var c = a.task;
@@ -264,41 +264,41 @@ async function ha(a) {
   let e = a.args;
   switch(c) {
     case "init":
-      N = a.options || {};
-      (c = a.factory) ? (Function("return " + c)()(self), M = new self.FlexSearch.Index(N), delete self.FlexSearch) : M = new O(N);
+      M = a.options || {};
+      (c = a.factory) ? (Function("return " + c)()(self), L = new self.FlexSearch.Index(M), delete self.FlexSearch) : L = new N(M);
       postMessage({id:b});
       break;
     default:
       let d;
       if ("export" === c) {
-        if (!N.export || "function" !== typeof N.export) {
+        if (!M.export || "function" !== typeof M.export) {
           throw Error('Either no extern configuration provided for the Worker-Index or no method was defined on the config property "export".');
         }
-        e[1] ? (e[0] = N.export, e[2] = 0, e[3] = 1) : e = null;
+        e[1] ? (e[0] = M.export, e[2] = 0, e[3] = 1) : e = null;
       }
       if ("import" === c) {
-        if (!N.import || "function" !== typeof N.import) {
+        if (!M.import || "function" !== typeof M.import) {
           throw Error('Either no extern configuration provided for the Worker-Index or no method was defined on the config property "import".');
         }
-        e[0] && (a = await N.import.call(M, e[0]), M.import(e[0], a));
+        e[0] && (a = await M.import.call(L, e[0]), L.import(e[0], a));
       } else {
-        (d = e && M[c].apply(M, e)) && d.then && (d = await d);
+        (d = e && L[c].apply(L, e)) && d.then && (d = await d);
       }
       postMessage("search" === c ? {id:b, msg:d} : {id:b});
   }
 }
 ;function ia(a) {
-  P.call(a, "add");
-  P.call(a, "append");
-  P.call(a, "search");
-  P.call(a, "update");
-  P.call(a, "remove");
+  O.call(a, "add");
+  O.call(a, "append");
+  O.call(a, "search");
+  O.call(a, "update");
+  O.call(a, "remove");
 }
 let ja, ka, Q;
 function la() {
   ja = Q = 0;
 }
-function P(a) {
+function O(a) {
   this[a + "Async"] = function() {
     const c = arguments;
     var b = c[c.length - 1];
@@ -429,7 +429,7 @@ function sa(a, c) {
   }
   return c;
 }
-function U(a, c, b, e, d, f, g = 0) {
+function ta(a, c, b, e, d, f, g = 0) {
   const k = e && e.constructor === Array;
   var h = k ? e.shift() : e;
   if (!h) {
@@ -438,12 +438,12 @@ function U(a, c, b, e, d, f, g = 0) {
   if ((h = a((c ? c + "." : "") + (g + 1) + "." + b, JSON.stringify(h))) && h.then) {
     const l = this;
     return h.then(function() {
-      return U.call(l, a, c, b, k ? e : null, d, f, g + 1);
+      return ta.call(l, a, c, b, k ? e : null, d, f, g + 1);
     });
   }
-  return U.call(this, a, c, b, k ? e : null, d, f, g + 1);
+  return ta.call(this, a, c, b, k ? e : null, d, f, g + 1);
 }
-function ta(a, c) {
+function ua(a, c) {
   let b = "";
   for (const e of a.entries()) {
     a = e[0];
@@ -463,8 +463,8 @@ function ta(a, c) {
   }
   return b;
 }
-;V.prototype.add = function(a, c, b) {
-  I(a) && (c = a, a = J(c, this.key));
+;U.prototype.add = function(a, c, b) {
+  H(a) && (c = a, a = I(c, this.key));
   if (c && (a || 0 === a)) {
     if (!b && this.reg.has(a)) {
       return this.update(a, c);
@@ -477,7 +477,7 @@ function ta(a, c) {
         d && e.add(a, d, !1, !0);
       } else {
         if (d = h.I, !d || d(c)) {
-          h.constructor === String ? h = ["" + h] : D(h) && (h = [h]), ua(c, h, this.J, 0, e, a, h[0], b);
+          h.constructor === String ? h = ["" + h] : D(h) && (h = [h]), va(c, h, this.J, 0, e, a, h[0], b);
         }
       }
     }
@@ -496,7 +496,7 @@ function ta(a, c) {
             continue;
           }
           f.constructor === String && (f = "" + f);
-          f = J(c, f);
+          f = I(c, f);
         }
         if (d && f) {
           D(f) && (f = [f]);
@@ -528,7 +528,7 @@ function ta(a, c) {
             k[l] = c[l];
             continue;
           }
-          va(c, k, l, 0, l[0], m);
+          wa(c, k, l, 0, l[0], m);
         }
       }
       this.store.set(a, k || c);
@@ -536,21 +536,21 @@ function ta(a, c) {
   }
   return this;
 };
-function va(a, c, b, e, d, f) {
+function wa(a, c, b, e, d, f) {
   a = a[d];
   if (e === b.length - 1) {
     c[d] = f || a;
   } else if (a) {
     if (a.constructor === Array) {
       for (c = c[d] = Array(a.length), d = 0; d < a.length; d++) {
-        va(a, c, b, e, d);
+        wa(a, c, b, e, d);
       }
     } else {
-      c = c[d] || (c[d] = C()), d = b[++e], va(a, c, b, e, d);
+      c = c[d] || (c[d] = C()), d = b[++e], wa(a, c, b, e, d);
     }
   }
 }
-function ua(a, c, b, e, d, f, g, k) {
+function va(a, c, b, e, d, f, g, k) {
   if (a = a[g]) {
     if (e === c.length - 1) {
       if (a.constructor === Array) {
@@ -566,24 +566,24 @@ function ua(a, c, b, e, d, f, g, k) {
     } else {
       if (a.constructor === Array) {
         for (g = 0; g < a.length; g++) {
-          ua(a, c, b, e, d, f, g, k);
+          va(a, c, b, e, d, f, g, k);
         }
       } else {
-        g = c[++e], ua(a, c, b, e, d, f, g, k);
+        g = c[++e], va(a, c, b, e, d, f, g, k);
       }
     }
   }
 }
-;function wa(a, c, b, e, d) {
+;function xa(a, c, b, e, d) {
   const f = a.length;
   let g = [], k, h;
   k = C();
-  for (let l = 0, m, n, r, p; l < c; l++) {
+  for (let l = 0, m, n, u, p; l < c; l++) {
     for (let q = 0; q < f; q++) {
-      if (r = a[q], l < r.length && (m = r[l])) {
+      if (u = a[q], l < u.length && (m = u[l])) {
         for (let t = 0; t < m.length; t++) {
           if (n = m[t], (h = k[n]) ? k[n]++ : (h = 0, k[n] = 1), p = g[h] || (g[h] = []), p.push(n), b && h === f - 1 && p.length - e === b) {
-            return p;
+            return e ? p.slice(e) : p;
           }
         }
       }
@@ -591,7 +591,7 @@ function ua(a, c, b, e, d, f, g, k) {
   }
   if (a = g.length) {
     if (d) {
-      g = 1 < g.length ? xa(g, b, e) : (g = g[0]).length > b || e ? g.slice(e, b + e) : g;
+      g = 1 < g.length ? ya(g, b, e) : (g = g[0]).length > b || e ? g.slice(e, b + e) : g;
     } else {
       if (a < f) {
         return [];
@@ -606,7 +606,7 @@ function ua(a, c, b, e, d, f, g, k) {
   }
   return g;
 }
-function xa(a, c, b) {
+function ya(a, c, b) {
   const e = [], d = C();
   let f;
   var g = a.length;
@@ -628,7 +628,7 @@ function xa(a, c, b) {
   }
   return e;
 }
-function ya(a, c) {
+function za(a, c) {
   const b = C(), e = [];
   for (let d = 0, f; d < c.length; d++) {
     f = c[d];
@@ -641,12 +641,12 @@ function ya(a, c) {
   }
   return e;
 }
-;function za(a, c, b, e) {
+;function Aa(a, c, b, e) {
   if (!a.length) {
     return a;
   }
   if (1 === a.length) {
-    return a = a[0], a = b || a.length > c ? c ? a.slice(b, b + c) : a.slice(b) : a, e ? W.call(this, a) : a;
+    return a = a[0], a = b || a.length > c ? c ? a.slice(b, b + c) : a.slice(b) : a, e ? V.call(this, a) : a;
   }
   let d = [];
   for (let f = 0, g, k; f < a.length; f++) {
@@ -660,7 +660,7 @@ function ya(a, c) {
       }
       k > c && (g = g.slice(0, c), k = c);
       if (!d.length && k >= c) {
-        return e ? W.call(this, g) : g;
+        return e ? V.call(this, g) : g;
       }
       d.push(g);
       c -= k;
@@ -670,9 +670,9 @@ function ya(a, c) {
     }
   }
   d = 1 < d.length ? [].concat.apply([], d) : d[0];
-  return e ? W.call(this, d) : d;
+  return e ? V.call(this, d) : d;
 }
-;function Aa(a, c, b) {
+;function Ba(a, c, b) {
   var e = b[0];
   if (e.then) {
     return Promise.all(b).then(function(m) {
@@ -686,30 +686,30 @@ function ya(a, c) {
   let d = [], f = 0, g = 0, k, h, l;
   for (let m = 0, n; m < b.length; m++) {
     if (n = b[m]) {
-      let r;
-      if (n.constructor === X) {
-        r = n.result;
+      let u;
+      if (n.constructor === W) {
+        u = n.result;
       } else if (n.constructor === Array) {
-        r = n;
+        u = n;
       } else {
         if (f = n.limit || 0, g = n.offset || 0, l = n.suggest, h = n.resolve, k = n.enrich && h, n.index) {
-          n.resolve = !1, n.enrich = !1, r = n.index.search(n).result, n.resolve = h, n.enrich = k;
+          n.resolve = !1, n.enrich = !1, u = n.index.search(n).result, n.resolve = h, n.enrich = k;
         } else if (n.and) {
-          r = a.and(n.and);
+          u = a.and(n.and);
         } else if (n.or) {
-          r = a.or(n.or);
+          u = a.or(n.or);
         } else if (n.xor) {
-          r = a.xor(n.xor);
+          u = a.xor(n.xor);
         } else if (n.not) {
-          r = a.not(n.not);
+          u = a.not(n.not);
         } else {
           continue;
         }
       }
-      if (r.then) {
-        d.push(r);
-      } else if (r.length) {
-        e[m] = r;
+      if (u.then) {
+        d.push(u);
+      } else if (u.length) {
+        e[m] = u;
       } else if (!l && ("and" === c || "xor" === c)) {
         e = [];
         break;
@@ -718,11 +718,11 @@ function ya(a, c) {
   }
   return {O:e, P:d, limit:f, offset:g, enrich:k, resolve:h, suggest:l};
 }
-;X.prototype.or = function() {
-  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f} = Aa(this, "or", arguments);
-  return Ba.call(this, a, c, b, e, d, f);
+;W.prototype.or = function() {
+  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f} = Ba(this, "or", arguments);
+  return Ca.call(this, a, c, b, e, d, f);
 };
-function Ba(a, c, b, e, d, f) {
+function Ca(a, c, b, e, d, f) {
   if (c.length) {
     const g = this;
     return Promise.all(c).then(function(k) {
@@ -730,53 +730,24 @@ function Ba(a, c, b, e, d, f) {
       for (let h = 0, l; h < k.length; h++) {
         (l = k[h]).length && (a[h] = l);
       }
-      return Ba.call(g, a, [], b, e, d, f);
+      return Ca.call(g, a, [], b, e, d, f);
     });
   }
-  a.length && (this.result.length && a.push(this.result), 2 > a.length ? this.result = a[0] : (this.result = xa(a, b, e), e = 0));
+  a.length && (this.result.length && a.push(this.result), 2 > a.length ? this.result = a[0] : (this.result = ya(a, b, e), e = 0));
   return f ? this.resolve(b, e, d) : this;
 }
-;X.prototype.and = function() {
+;W.prototype.and = function() {
   let a = this.result.length, c, b, e, d;
   if (!a) {
     const f = arguments[0];
     f && (a = !!f.suggest, d = f.resolve, c = f.limit, b = f.offset, e = f.enrich && d);
   }
   if (a) {
-    const {O:f, P:g, limit:k, offset:h, enrich:l, resolve:m, suggest:n} = Aa(this, "and", arguments);
-    return Ca.call(this, f, g, k, h, l, m, n);
+    const {O:f, P:g, limit:k, offset:h, enrich:l, resolve:m, suggest:n} = Ba(this, "and", arguments);
+    return Da.call(this, f, g, k, h, l, m, n);
   }
   return d ? this.resolve(c, b, e) : this;
 };
-function Ca(a, c, b, e, d, f, g) {
-  if (c.length) {
-    const k = this;
-    return Promise.all(c).then(function(h) {
-      a = [];
-      for (let l = 0, m; l < h.length; l++) {
-        (m = h[l]).length && (a[l] = m);
-      }
-      return Ca.call(k, a, [], b, e, d, f, g);
-    });
-  }
-  if (a.length) {
-    if (this.result.length && a.unshift(this.result), 2 > a.length) {
-      this.result = a[0];
-    } else {
-      if (c = aa(a)) {
-        return this.result = wa(a, c, b, e, g), f ? d ? W.call(this.index, this.result) : this.result : this;
-      }
-      this.result = [];
-    }
-  } else {
-    g || (this.result = a);
-  }
-  return f ? this.resolve(b, e, d) : this;
-}
-;X.prototype.xor = function() {
-  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Aa(this, "xor", arguments);
-  return Da.call(this, a, c, b, e, d, f, g);
-};
 function Da(a, c, b, e, d, f, g) {
   if (c.length) {
     const k = this;
@@ -792,14 +763,43 @@ function Da(a, c, b, e, d, f, g) {
     if (this.result.length && a.unshift(this.result), 2 > a.length) {
       this.result = a[0];
     } else {
-      return this.result = Ea.call(this, a, b, e, f, this.h), f ? d ? W.call(this.index, this.result) : this.result : this;
+      if (c = aa(a)) {
+        return this.result = xa(a, c, b, e, g), f ? d ? V.call(this.index, this.result) : this.result : this;
+      }
+      this.result = [];
     }
   } else {
     g || (this.result = a);
   }
   return f ? this.resolve(b, e, d) : this;
 }
-function Ea(a, c, b, e, d) {
+;W.prototype.xor = function() {
+  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Ba(this, "xor", arguments);
+  return Ea.call(this, a, c, b, e, d, f, g);
+};
+function Ea(a, c, b, e, d, f, g) {
+  if (c.length) {
+    const k = this;
+    return Promise.all(c).then(function(h) {
+      a = [];
+      for (let l = 0, m; l < h.length; l++) {
+        (m = h[l]).length && (a[l] = m);
+      }
+      return Ea.call(k, a, [], b, e, d, f, g);
+    });
+  }
+  if (a.length) {
+    if (this.result.length && a.unshift(this.result), 2 > a.length) {
+      this.result = a[0];
+    } else {
+      return this.result = Fa.call(this, a, b, e, f, this.h), f ? d ? V.call(this.index, this.result) : this.result : this;
+    }
+  } else {
+    g || (this.result = a);
+  }
+  return f ? this.resolve(b, e, d) : this;
+}
+function Fa(a, c, b, e, d) {
   const f = [], g = C();
   let k = 0;
   for (let h = 0, l; h < a.length; h++) {
@@ -807,17 +807,17 @@ function Ea(a, c, b, e, d) {
       k < l.length && (k = l.length);
       for (let m = 0, n; m < l.length; m++) {
         if (n = l[m]) {
-          for (let r = 0, p; r < n.length; r++) {
-            p = n[r], g[p] = g[p] ? 2 : 1;
+          for (let u = 0, p; u < n.length; u++) {
+            p = n[u], g[p] = g[p] ? 2 : 1;
           }
         }
       }
     }
   }
   for (let h = 0, l, m = 0; h < k; h++) {
-    for (let n = 0, r; n < a.length; n++) {
-      if (r = a[n]) {
-        if (l = r[h]) {
+    for (let n = 0, u; n < a.length; n++) {
+      if (u = a[n]) {
+        if (l = u[h]) {
           for (let p = 0, q; p < l.length; p++) {
             if (q = l[p], 1 === g[q]) {
               if (b) {
@@ -844,11 +844,11 @@ function Ea(a, c, b, e, d) {
   }
   return f;
 }
-;X.prototype.not = function() {
-  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Aa(this, "not", arguments);
-  return Fa.call(this, a, c, b, e, d, f, g);
+;W.prototype.not = function() {
+  const {O:a, P:c, limit:b, offset:e, enrich:d, resolve:f, suggest:g} = Ba(this, "not", arguments);
+  return Ga.call(this, a, c, b, e, d, f, g);
 };
-function Fa(a, c, b, e, d, f, g) {
+function Ga(a, c, b, e, d, f, g) {
   if (c.length) {
     const k = this;
     return Promise.all(c).then(function(h) {
@@ -856,17 +856,17 @@ function Fa(a, c, b, e, d, f, g) {
       for (let l = 0, m; l < h.length; l++) {
         (m = h[l]).length && (a[l] = m);
       }
-      return Fa.call(k, a, [], b, e, d, f, g);
+      return Ga.call(k, a, [], b, e, d, f, g);
     });
   }
   if (a.length && this.result.length) {
-    this.result = Ga.call(this, a, b, e, f);
+    this.result = Ha.call(this, a, b, e, f);
   } else if (f) {
     return this.resolve(b, e, d);
   }
-  return f ? d ? W.call(this.index, this.result) : this.result : this;
+  return f ? d ? V.call(this.index, this.result) : this.result : this;
 }
-function Ga(a, c, b, e) {
+function Ha(a, c, b, e) {
   const d = [];
   a = new Set(a.flat().flat());
   for (let f = 0, g, k = 0; f < this.result.length; f++) {
@@ -892,9 +892,9 @@ function Ga(a, c, b, e) {
   }
   return d;
 }
-;function X(a) {
-  if (!this || this.constructor !== X) {
-    return new X(a);
+;function W(a) {
+  if (!this || this.constructor !== W) {
+    return new W(a);
   }
   if (a && a.index) {
     return a.resolve = !1, this.index = a.index, this.h = a.boost || 0, this.result = a.index.search(a).result, this;
@@ -903,7 +903,7 @@ function Ga(a, c, b, e) {
   this.result = a || [];
   this.h = 0;
 }
-X.prototype.limit = function(a) {
+W.prototype.limit = function(a) {
   if (this.result.length) {
     const c = [];
     for (let b = 0, e; b < this.result.length; b++) {
@@ -922,7 +922,7 @@ X.prototype.limit = function(a) {
   }
   return this;
 };
-X.prototype.offset = function(a) {
+W.prototype.offset = function(a) {
   if (this.result.length) {
     const c = [];
     for (let b = 0, e; b < this.result.length; b++) {
@@ -934,23 +934,23 @@ X.prototype.offset = function(a) {
   }
   return this;
 };
-X.prototype.boost = function(a) {
+W.prototype.boost = function(a) {
   this.h += a;
   return this;
 };
-X.prototype.resolve = function(a, c, b) {
+W.prototype.resolve = function(a, c, b) {
   const e = this.result, d = this.index;
   this.result = this.index = null;
-  return e.length ? ("object" === typeof a && (b = a.enrich, c = a.offset, a = a.limit), za.call(d, e, a || 100, c, b)) : e;
+  return e.length ? ("object" === typeof a && (b = a.enrich, c = a.offset, a = a.limit), Aa.call(d, e, a || 100, c, b)) : e;
 };
 C();
-V.prototype.search = function(a, c, b, e) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+U.prototype.search = function(a, c, b, e) {
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   let d = [];
   var f = [];
   let g;
   let k, h, l;
-  let m = 0, n = !0, r;
+  let m = 0, n = !0, u;
   if (b) {
     b.constructor === Array && (b = {index:b});
     a = b.query || a;
@@ -961,49 +961,49 @@ V.prototype.search = function(a, c, b, e) {
     k = b.suggest;
     n = !0;
     this.store && b.enrich && !n && console.warn("Enrich results can only be done on a final resolver task or when calling .resolve({ enrich: true })");
-    r = (g = this.store && b.enrich && n) && b.highlight;
+    u = (g = this.store && b.enrich && n) && b.highlight;
     c = b.limit || c;
     var t = b.offset || 0;
     c || (c = 100);
     if (l) {
       l.constructor !== Array && (l = [l]);
-      var u = [];
+      var r = [];
       for (let y = 0, v; y < l.length; y++) {
         v = l[y];
         if (D(v)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
         if (v.field && v.tag) {
-          var w = v.tag;
-          if (w.constructor === Array) {
-            for (var z = 0; z < w.length; z++) {
-              u.push(v.field, w[z]);
+          var x = v.tag;
+          if (x.constructor === Array) {
+            for (var z = 0; z < x.length; z++) {
+              r.push(v.field, x[z]);
             }
           } else {
-            u.push(v.field, w);
+            r.push(v.field, x);
           }
         } else {
-          w = Object.keys(v);
-          for (let E = 0, F, A; E < w.length; E++) {
-            if (F = w[E], A = v[F], A.constructor === Array) {
+          x = Object.keys(v);
+          for (let E = 0, F, A; E < x.length; E++) {
+            if (F = x[E], A = v[F], A.constructor === Array) {
               for (z = 0; z < A.length; z++) {
-                u.push(F, A[z]);
+                r.push(F, A[z]);
               }
             } else {
-              u.push(F, A);
+              r.push(F, A);
             }
           }
         }
       }
-      if (!u.length) {
+      if (!r.length) {
         throw Error("Your tag definition within the search options is probably wrong. No valid tags found.");
       }
-      l = u;
+      l = r;
       if (!a) {
         f = [];
-        if (u.length) {
-          for (p = 0; p < u.length; p += 2) {
-            q = Ha.call(this, u[p], u[p + 1], c, t, g), d.push({field:u[p], tag:u[p + 1], result:q});
+        if (r.length) {
+          for (p = 0; p < r.length; p += 2) {
+            q = Ia.call(this, r[p], r[p + 1], c, t, g), d.push({field:r[p], tag:r[p + 1], result:q});
           }
         }
         return f.length ? Promise.all(f).then(function(y) {
@@ -1017,7 +1017,7 @@ V.prototype.search = function(a, c, b, e) {
     h && h.constructor !== Array && (h = [h]);
   }
   h || (h = this.field);
-  u = !e && (this.worker || this.db) && [];
+  r = !e && (this.worker || this.db) && [];
   for (let y = 0, v, E, F; y < h.length; y++) {
     E = h[y];
     let A;
@@ -1025,38 +1025,38 @@ V.prototype.search = function(a, c, b, e) {
     if (e) {
       v = e[y];
     } else {
-      if (w = A || b, z = this.index.get(E), l && (w.enrich = !1), u) {
-        u[y] = z.search(a, c, w);
-        w && g && (w.enrich = g);
+      if (x = A || b, z = this.index.get(E), l && (x.enrich = !1), r) {
+        r[y] = z.search(a, c, x);
+        x && g && (x.enrich = g);
         continue;
       } else {
-        v = z.search(a, c, w), w && g && (w.enrich = g);
+        v = z.search(a, c, x), x && g && (x.enrich = g);
       }
     }
     F = v && (n ? v.length : v.result.length);
     if (l && F) {
-      w = [];
+      x = [];
       z = 0;
-      for (let G = 0, H, Wa; G < l.length; G += 2) {
-        H = this.tag.get(l[G]);
-        if (!H) {
+      for (let G = 0, P, Va; G < l.length; G += 2) {
+        P = this.tag.get(l[G]);
+        if (!P) {
           if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), k) {
             continue;
           } else {
-            return n ? d : new X(d);
+            return n ? d : new W(d);
           }
         }
-        if (Wa = (H = H && H.get(l[G + 1])) && H.length) {
-          z++, w.push(H);
+        if (Va = (P = P && P.get(l[G + 1])) && P.length) {
+          z++, x.push(P);
         } else if (!k) {
-          return n ? d : new X(d);
+          return n ? d : new W(d);
         }
       }
       if (z) {
-        v = ya(v, w);
+        v = za(v, x);
         F = v.length;
         if (!F && !k) {
-          return n ? v : new X(v);
+          return n ? v : new W(v);
         }
         z--;
       }
@@ -1064,78 +1064,74 @@ V.prototype.search = function(a, c, b, e) {
     if (F) {
       f[m] = E, d.push(v), m++;
     } else if (1 === h.length) {
-      return n ? d : new X(d);
+      return n ? d : new W(d);
     }
   }
-  if (u) {
+  if (r) {
     const y = this;
-    return Promise.all(u).then(function(v) {
+    return Promise.all(r).then(function(v) {
       return v.length ? y.search(a, c, b, v) : v;
     });
   }
   if (!m) {
-    return n ? d : new X(d);
+    return n ? d : new W(d);
   }
   if (p && (!g || !this.store)) {
     return d[0];
   }
-  u = [];
+  r = [];
   for (t = 0; t < f.length; t++) {
     e = d[t];
-    g && e.length && "undefined" === typeof e[0].doc && (e = W.call(this, e));
+    g && e.length && "undefined" === typeof e[0].doc && (e = V.call(this, e));
     if (p) {
-      return n ? e : new X(e);
+      return n ? e : new W(e);
     }
     d[t] = {field:f[t], result:e};
   }
-  return q ? Ia(d, c) : r ? Ja(d, a, this.index, this.field, this.C, r) : d;
+  return q ? Ja(d, c) : u ? Ka(d, a, this.index, this.field, this.C, u) : d;
 };
-function Ja(a, c, b, e, d, f) {
+function Ka(a, c, b, e, d, f) {
   let g, k, h;
-  for (let m = 0, n, r, p, q; m < a.length; m++) {
-    let t = a[m].result;
-    n = a[m].field;
-    p = b.get(n);
-    r = p.encoder;
-    h = p.tokenize;
-    q = d[e.indexOf(n)];
-    r !== g && (g = r, k = g.encode(c));
-    for (let u = 0; u < t.length; u++) {
-      let w = "";
-      var l = J(t[u].doc, q);
-      let z = g.encode(l);
-      l = l.split(g.split);
-      for (let y = 0, v, E; y < z.length; y++) {
-        v = z[y];
-        E = l[y];
-        if (!v || !E) {
-          continue;
-        }
-        let F;
-        for (let A = 0, G; A < k.length; A++) {
-          if (G = k[A], "strict" === h) {
-            if (v === G) {
-              w += (w ? " " : "") + f.replace("$1", E);
-              F = !0;
-              break;
-            }
-          } else {
-            const H = v.indexOf(G);
-            if (-1 < H) {
-              w += (w ? " " : "") + E.substring(0, H) + f.replace("$1", E.substring(H, G.length)) + E.substring(H + G.length);
-              F = !0;
-              break;
+  for (let l = 0, m, n, u, p; l < a.length; l++) {
+    let q = a[l].result;
+    m = a[l].field;
+    u = b.get(m);
+    n = u.encoder;
+    h = u.tokenize;
+    p = d[e.indexOf(m)];
+    n !== g && (g = n, k = g.encode(c));
+    for (let t = 0; t < q.length; t++) {
+      let r = "", x = I(q[t].doc, p).split(/\s+/);
+      for (let z = 0, y, v; z < x.length; z++) {
+        y = x[z];
+        v = g.encode(y).join(" ");
+        let E;
+        if (v && y) {
+          for (let F = 0, A; F < k.length; F++) {
+            if (A = k[F], "strict" === h) {
+              if (v === A) {
+                r += (r ? " " : "") + f.replace("$1", y);
+                E = !0;
+                break;
+              }
+            } else {
+              const G = v.indexOf(A);
+              if (-1 < G) {
+                r += (r ? " " : "") + y.substring(0, G) + f.replace("$1", y.substring(G, A.length)) + y.substring(G + A.length);
+                E = !0;
+                break;
+              }
             }
           }
         }
-        F || (w += (w ? " " : "") + l[y]);
+        E || (r += (r ? " " : "") + x[z]);
       }
-      t[u].highlight = w;
+      q[t].highlight = r;
     }
   }
   return a;
 }
-function Ia(a, c) {
+function Ja(a, c) {
   const b = [], e = C();
   for (let d = 0, f, g; d < a.length; d++) {
     f = a[d];
@@ -1154,7 +1150,7 @@ function Ia(a, c) {
   }
   return b;
 }
-function Ha(a, c, b, e, d) {
+function Ia(a, c, b, e, d) {
   let f = this.tag.get(a);
   if (!f) {
     return console.warn("Tag '" + a + "' was not found"), [];
@@ -1163,11 +1159,11 @@ function Ha(a, c, b, e, d) {
     if (a > b || e) {
       f = f.slice(e, e + b);
     }
-    d && (f = W.call(this, f));
+    d && (f = V.call(this, f));
     return f;
   }
 }
-function W(a) {
+function V(a) {
   if (!this || !this.store) {
     return a;
   }
@@ -1177,33 +1173,33 @@ function W(a) {
   }
   return c;
 }
-;function V(a) {
-  if (!this || this.constructor !== V) {
-    return new V(a);
+;function U(a) {
+  if (!this || this.constructor !== U) {
+    return new U(a);
   }
   const c = a.document || a.doc || a;
   var b;
   this.C = [];
   this.field = [];
   this.J = [];
-  this.key = (b = c.key || c.id) && Ka(b, this.J) || "id";
+  this.key = (b = c.key || c.id) && La(b, this.J) || "id";
   this.reg = (this.fastupdate = !!a.fastupdate) ? new Map() : new Set();
   this.A = (b = c.store || null) && b && !0 !== b && [];
   this.store = b && new Map();
-  this.cache = (b = a.cache || null) && new Y(b);
+  this.cache = (b = a.cache || null) && new X(b);
   a.cache = !1;
   this.priority = a.priority || 4;
   b = new Map();
   let e = c.index || c.field || c;
   D(e) && (e = [e]);
   for (let d = 0, f, g; d < e.length; d++) {
-    f = e[d], D(f) || (g = f, f = f.field), g = I(g) ? Object.assign({}, a, g) : a, b.set(f, new O(g, this.reg)), g.custom ? this.C[d] = g.custom : (this.C[d] = Ka(f, this.J), g.filter && ("string" === typeof this.C[d] && (this.C[d] = new String(this.C[d])), this.C[d].I = g.filter)), this.field[d] = f;
+    f = e[d], D(f) || (g = f, f = f.field), g = H(g) ? Object.assign({}, a, g) : a, b.set(f, new N(g, this.reg)), g.custom ? this.C[d] = g.custom : (this.C[d] = La(f, this.J), g.filter && ("string" === typeof this.C[d] && (this.C[d] = new String(this.C[d])), this.C[d].I = g.filter)), this.field[d] = f;
   }
   if (this.A) {
     a = c.store;
     D(a) && (a = [a]);
     for (let d = 0, f, g; d < a.length; d++) {
-      f = a[d], g = f.field || f, f.custom ? (this.A[d] = f.custom, f.custom.U = g) : (this.A[d] = Ka(g, this.J), f.filter && ("string" === typeof this.A[d] && (this.A[d] = new String(this.A[d])), this.A[d].I = f.filter));
+      f = a[d], g = f.field || f, f.custom ? (this.A[d] = f.custom, f.custom.U = g) : (this.A[d] = La(g, this.J), f.filter && ("string" === typeof this.A[d] && (this.A[d] = new String(this.A[d])), this.A[d].I = f.filter));
     }
   }
   this.index = b;
@@ -1219,14 +1215,14 @@ function W(a) {
         if (!g) {
           throw Error("The tag field from the document descriptor is undefined.");
         }
-        f.custom ? this.B[d] = f.custom : (this.B[d] = Ka(g, this.J), f.filter && ("string" === typeof this.B[d] && (this.B[d] = new String(this.B[d])), this.B[d].I = f.filter));
+        f.custom ? this.B[d] = f.custom : (this.B[d] = La(g, this.J), f.filter && ("string" === typeof this.B[d] && (this.B[d] = new String(this.B[d])), this.B[d].I = f.filter));
         this.T[d] = g;
         this.tag.set(g, new Map());
       }
     }
   }
 }
-function Ka(a, c) {
+function La(a, c) {
   const b = a.split(":");
   let e = 0;
   for (let d = 0; d < b.length; d++) {
@@ -1235,15 +1231,15 @@ function Ka(a, c) {
   e < b.length && (b.length = e);
   return 1 < e ? b : b[0];
 }
-x = V.prototype;
-x.append = function(a, c) {
+w = U.prototype;
+w.append = function(a, c) {
   return this.add(a, c, !0);
 };
-x.update = function(a, c) {
+w.update = function(a, c) {
   return this.remove(a).add(a, c);
 };
-x.remove = function(a) {
-  I(a) && (a = J(a, this.key));
+w.remove = function(a) {
+  H(a) && (a = I(a, this.key));
   for (var c of this.index.values()) {
     c.remove(a, !0);
   }
@@ -1263,7 +1259,7 @@ x.remove = function(a) {
   this.cache && this.cache.remove(a);
   return this;
 };
-x.clear = function() {
+w.clear = function() {
   const a = [];
   for (const c of this.index.values()) {
     const b = c.clear();
@@ -1278,25 +1274,25 @@ x.clear = function() {
   this.cache && this.cache.clear();
   return a.length ? Promise.all(a) : this;
 };
-x.contain = function(a) {
+w.contain = function(a) {
   return this.reg.has(a);
 };
-x.cleanup = function() {
+w.cleanup = function() {
   for (const a of this.index.values()) {
     a.cleanup();
   }
   return this;
 };
-x.get = function(a) {
+w.get = function(a) {
   return this.store.get(a) || null;
 };
-x.set = function(a, c) {
-  "object" === typeof a && (c = a, a = J(c, this.key));
+w.set = function(a, c) {
+  "object" === typeof a && (c = a, a = I(c, this.key));
   this.store.set(a, c);
   return this;
 };
-x.searchCache = La;
-x.export = function(a, c, b = 0, e = 0) {
+w.searchCache = Ma;
+w.export = function(a, c, b = 0, e = 0) {
   if (b < this.field.length) {
     const g = this.field[b];
     if ((c = this.index.get(g).export(a, g, b, e = 1)) && c.then) {
@@ -1327,9 +1323,9 @@ x.export = function(a, c, b = 0, e = 0) {
     default:
       return;
   }
-  return U.call(this, a, c, d, f, b, e);
+  return ta.call(this, a, c, d, f, b, e);
 };
-x.import = function(a, c) {
+w.import = function(a, c) {
   var b = a.split(".");
   "json" === b[b.length - 1] && b.pop();
   a = 2 < b.length ? b[0] : "";
@@ -1355,10 +1351,10 @@ x.import = function(a, c) {
     }
   }
 };
-ia(V.prototype);
-function La(a, c, b) {
+ia(U.prototype);
+function Ma(a, c, b) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
-  this.cache || (this.cache = new Y());
+  this.cache || (this.cache = new X());
   let e = this.cache.get(a);
   if (!e) {
     e = this.search(a, c, b);
@@ -1373,66 +1369,115 @@ function La(a, c, b) {
   }
   return e;
 }
-function Y(a) {
+function X(a) {
   this.limit = a && !0 !== a ? a : 1000;
   this.cache = new Map();
   this.h = "";
 }
-Y.prototype.set = function(a, c) {
+X.prototype.set = function(a, c) {
   this.cache.set(this.h = a, c);
   this.cache.size > this.limit && this.cache.delete(this.cache.keys().next().value);
 };
-Y.prototype.get = function(a) {
+X.prototype.get = function(a) {
   const c = this.cache.get(a);
   c && this.h !== a && (this.cache.delete(a), this.cache.set(this.h = a, c));
   return c;
 };
-Y.prototype.remove = function(a) {
+X.prototype.remove = function(a) {
   for (const c of this.cache) {
     const b = c[0];
     c[1].includes(a) && this.cache.delete(b);
   }
 };
-Y.prototype.clear = function() {
+X.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-const Ma = {normalize:!1, numeric:!1};
-const Na = {};
-const Oa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
-const Pa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Qa = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-const Ra = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
-var Sa = {W:Ma, V:Na, X:Na, LatinBalance:{dedupe:!0, mapper:Oa}, LatinAdvanced:{dedupe:!0, mapper:Oa, matcher:Pa, replacer:Qa}, LatinExtra:{dedupe:!0, mapper:Oa, replacer:Qa.concat([/(?!^)[aeo]/g, ""]), matcher:Pa}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
+const Na = {normalize:!1, numeric:!1};
+const Oa = {};
+const Pa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
+const Qa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Ra = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+const Sa = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
+var Ta = {W:Na, V:Oa, X:Oa, LatinBalance:{dedupe:!0, mapper:Pa}, LatinAdvanced:{dedupe:!0, mapper:Pa, matcher:Qa, replacer:Ra}, LatinExtra:{dedupe:!0, mapper:Pa, replacer:Ra.concat([/(?!^)[aeo]/g, ""]), matcher:Qa}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (let b = 0; b < a.length; b++) {
     var c = a[b];
-    let e = c.charAt(0), d = Ra[e];
-    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Ra[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
+    let e = c.charAt(0), d = Sa[e];
+    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Sa[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
     }
     a[b] = e;
   }
-}}, LatinExact:Ma, LatinDefault:Na, LatinSimple:Na};
-const Ta = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
-O.prototype.add = function(a, c, b, e) {
+}}, LatinExact:Na, LatinDefault:Oa, LatinSimple:Oa};
+N.prototype.remove = function(a, c) {
+  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (b) {
+    if (this.fastupdate) {
+      for (let e = 0, d; e < b.length; e++) {
+        if (d = b[e]) {
+          if (2 > d.length) {
+            d.pop();
+          } else {
+            const f = d.indexOf(a);
+            f === b.length - 1 ? d.pop() : d.splice(f, 1);
+          }
+        }
+      }
+    } else {
+      Y(this.map, a), this.depth && Y(this.ctx, a);
+    }
+    c || this.reg.delete(a);
+  }
+  this.cache && this.cache.remove(a);
+  return this;
+};
+function Y(a, c) {
+  let b = 0;
+  var e = "undefined" === typeof c;
+  if (a.constructor === Array) {
+    for (let d = 0, f, g; d < a.length; d++) {
+      if ((f = a[d]) && f.length) {
+        if (e) {
+          b++;
+        } else {
+          if (g = f.indexOf(c), 0 <= g) {
+            1 < f.length ? (f.splice(g, 1), b++) : delete a[d];
+            break;
+          } else {
+            b++;
+          }
+        }
+      }
+    }
+  } else {
+    for (let d of a.entries()) {
+      e = d[0];
+      const f = Y(d[1], c);
+      f ? b += f : a.delete(e);
+    }
+  }
+  return b;
+}
+;const Ua = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+N.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
       return this.update(a, c);
     }
     c = this.encoder.encode(c);
     if (e = c.length) {
-      const l = C(), m = C(), n = this.depth, r = this.resolution;
+      const l = C(), m = C(), n = this.depth, u = this.resolution;
       for (let p = 0; p < e; p++) {
         let q = c[this.rtl ? e - 1 - p : p];
         var d = q.length;
         if (d && (n || !m[q])) {
-          var f = this.score ? this.score(c, q, p, null, 0) : Ua(r, e, p), g = "";
+          var f = this.score ? this.score(c, q, p, null, 0) : Wa(u, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
-                for (let t = 0, u; t < d; t++) {
+                for (let t = 0, r; t < d; t++) {
                   for (f = d; f > t; f--) {
                     g = q.substring(t, f);
-                    u = this.rtl ? d - 1 - t : t;
-                    var k = this.score ? this.score(c, q, p, g, u) : Ua(r, e, p, d, u);
+                    r = this.rtl ? d - 1 - t : t;
+                    var k = this.score ? this.score(c, q, p, g, r) : Wa(u, e, p, d, r);
                     Z(this, m, g, k, a, b);
                   }
                 }
@@ -1443,7 +1488,7 @@ O.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = q[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, q, p, g, k) : Ua(r, e, p, d, k);
+                  var h = this.score ? this.score(c, q, p, g, k) : Wa(u, e, p, d, k);
                   Z(this, m, g, h, a, b);
                 }
                 g = "";
@@ -1460,8 +1505,8 @@ O.prototype.add = function(a, c, b, e) {
                 for (d = C(), g = this.S, f = q, k = Math.min(n + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((q = c[this.rtl ? e - 1 - p - h : p + h]) && !d[q]) {
                     d[q] = 1;
-                    const t = this.score ? this.score(c, f, p, q, h - 1) : Ua(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), u = this.bidirectional && q > f;
-                    Z(this, l, u ? f : q, t, a, b, u ? q : f);
+                    const t = this.score ? this.score(c, f, p, q, h - 1) : Wa(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), r = this.bidirectional && q > f;
+                    Z(this, l, r ? f : q, t, a, b, r ? q : f);
                   }
                 }
               }
@@ -1479,11 +1524,11 @@ function Z(a, c, b, e, d, f, g) {
     g ? (c = h || (c[b] = C()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = []), k = k[e] || (k[e] = []), f && k.includes(d) || (k.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(k) : a.reg.set(d, [k])));
   }
 }
-function Ua(a, c, b, e, d) {
+function Wa(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
-;O.prototype.search = function(a, c, b) {
-  b || (!c && I(a) ? (b = a, a = "") : I(c) && (b = c, c = 0));
+;N.prototype.search = function(a, c, b) {
+  b || (!c && H(a) ? (b = a, a = "") : H(c) && (b = c, c = 0));
   var e = [], d = 0;
   if (b) {
     a = b.query || a;
@@ -1500,11 +1545,11 @@ function Ua(a, c, b, e, d) {
   b = a.length;
   c = c || (k ? 100 : 0);
   if (1 === b) {
-    return g = c, (c = Va(this, a[0], "")) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Xa(this, a[0], "")) && c.length ? Aa.call(this, c, g, d) : [];
   }
   f = this.depth && !1 !== f;
   if (2 === b && f && !g) {
-    return g = c, (c = Va(this, a[1], a[0])) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Xa(this, a[1], a[0])) && c.length ? Aa.call(this, c, g, d) : [];
   }
   k = C();
   let l = 0;
@@ -1516,29 +1561,29 @@ function Ua(a, c, b, e, d) {
   for (let q, t; l < b; l++) {
     if ((t = a[l]) && !k[t]) {
       k[t] = 1;
-      q = Va(this, t, m);
+      q = Xa(this, t, m);
       a: {
         f = q;
-        var n = e, r = g, p = h;
-        let u = [];
+        var n = e, u = g, p = h;
+        let r = [];
         if (f && f.length) {
           if (f.length <= p) {
             n.push(f);
             q = void 0;
             break a;
           }
-          for (let w = 0, z; w < p; w++) {
-            if (z = f[w]) {
-              u[w] = z;
+          for (let x = 0, z; x < p; x++) {
+            if (z = f[x]) {
+              r[x] = z;
             }
           }
-          if (u.length) {
-            n.push(u);
+          if (r.length) {
+            n.push(r);
             q = void 0;
             break a;
           }
         }
-        q = r ? void 0 : u;
+        q = u ? void 0 : r;
       }
       if (q) {
         e = q;
@@ -1553,77 +1598,34 @@ function Ua(a, c, b, e, d) {
     e = a.length;
     m = a;
     if (1 < e) {
-      m = wa(a, h, c, d, g);
+      m = xa(a, h, c, d, g);
     } else if (1 === e) {
-      g = za.call(null, a[0], c, d);
+      g = Aa.call(null, a[0], c, d);
       break a;
     }
     g = m;
   }
   return g;
 };
-function Va(a, c, b) {
+function Xa(a, c, b) {
   let e;
   b && (e = a.bidirectional && c > b) && (e = b, b = c, c = e);
   a = b ? (a = a.ctx.get(b)) && a.get(c) : a.map.get(c);
   return a;
 }
-;O.prototype.remove = function(a, c) {
-  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (b) {
-    if (this.fastupdate) {
-      for (let e = 0, d; e < b.length; e++) {
-        if (d = b[e]) {
-          if (2 > d.length) {
-            d.pop();
-          } else {
-            const f = d.indexOf(a);
-            f === b.length - 1 ? d.pop() : d.splice(f, 1);
-          }
-        }
-      }
-    } else {
-      Xa(this.map, a), this.depth && Xa(this.ctx, a);
-    }
-    c || this.reg.delete(a);
-  }
-  this.cache && this.cache.remove(a);
-  return this;
-};
-function Xa(a, c) {
-  let b = 0;
-  if (a.constructor === Array) {
-    for (let e = 0, d, f; e < a.length; e++) {
-      if ((d = a[e]) && d.length) {
-        if (f = d.indexOf(c), 0 <= f) {
-          1 < d.length ? (d.splice(f, 1), b++) : delete a[e];
-          break;
-        } else {
-          b++;
-        }
-      }
-    }
-  } else {
-    for (let e of a.entries()) {
-      const d = e[0], f = Xa(e[1], c);
-      f ? b += f : a.delete(d);
-    }
-  }
-  return b;
-}
-;function O(a, c) {
-  if (!this || this.constructor !== O) {
-    return new O(a);
+;function N(a, c) {
+  if (!this || this.constructor !== N) {
+    return new N(a);
   }
   if (a) {
     var b = D(a) ? a : a.preset;
-    b && (Ta[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ta[b], a));
+    b && (Ua[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ua[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Sa[a.encoder] : a.encode || a.encoder || {};
-  this.encoder = d.encode ? d : "object" === typeof d ? new K(d) : {encode:d};
+  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Ta[a.encoder] : a.encode || a.encoder || {};
+  this.encoder = d.encode ? d : "object" === typeof d ? new J(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
   this.depth = "strict" === b && e.depth || 0;
@@ -1637,51 +1639,37 @@ function Xa(a, c) {
   this.reg = c || (this.fastupdate ? new Map() : new Set());
   this.S = e.resolution || 3;
   this.rtl = d.rtl || a.rtl || !1;
-  this.cache = (b = a.cache || null) && new Y(b);
+  this.cache = (b = a.cache || null) && new X(b);
   this.priority = a.priority || 4;
 }
-x = O.prototype;
-x.clear = function() {
+w = N.prototype;
+w.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
   this.cache && this.cache.clear();
   return this;
 };
-x.append = function(a, c) {
+w.append = function(a, c) {
   return this.add(a, c, !0);
 };
-x.contain = function(a) {
+w.contain = function(a) {
   return this.reg.has(a);
 };
-x.update = function(a, c) {
+w.update = function(a, c) {
   const b = this, e = this.remove(a);
   return e && e.then ? e.then(() => b.add(a, c)) : this.add(a, c);
 };
-function Ya(a) {
-  let c = 0;
-  if (a.constructor === Array) {
-    for (let b = 0, e; b < a.length; b++) {
-      (e = a[b]) && (c += e.length);
-    }
-  } else {
-    for (const b of a.entries()) {
-      const e = b[0], d = Ya(b[1]);
-      d ? c += d : a.delete(e);
-    }
-  }
-  return c;
-}
-x.cleanup = function() {
+w.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  Ya(this.map);
-  this.depth && Ya(this.ctx);
+  Y(this.map);
+  this.depth && Y(this.ctx);
   return this;
 };
-x.searchCache = La;
-x.export = function(a, c, b = 0, e = 0) {
+w.searchCache = Ma;
+w.export = function(a, c, b = 0, e = 0) {
   let d, f;
   switch(e) {
     case 0:
@@ -1703,9 +1691,9 @@ x.export = function(a, c, b = 0, e = 0) {
     default:
       return;
   }
-  return U.call(this, a, c, d, f, b, e);
+  return ta.call(this, a, c, d, f, b, e);
 };
-x.import = function(a, c) {
+w.import = function(a, c) {
   if (c) {
     switch("string" === typeof c && (c = JSON.parse(c)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), 3 === a.length && a.shift(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
@@ -1720,7 +1708,7 @@ x.import = function(a, c) {
     }
   }
 };
-x.serialize = function(a = !0) {
+w.serialize = function(a = !0) {
   let c = "", b = "", e = "";
   if (this.reg.size) {
     let f;
@@ -1728,11 +1716,11 @@ x.serialize = function(a = !0) {
       f || (f = typeof d), c += (c ? "," : "") + ("string" === f ? '"' + d + '"' : d);
     }
     c = "index.reg=new Set([" + c + "]);";
-    b = ta(this.map, f);
+    b = ua(this.map, f);
     b = "index.map=new Map([" + b + "]);";
     for (const g of this.ctx.entries()) {
       d = g[0];
-      let k = ta(g[1], f);
+      let k = ua(g[1], f);
       k = "new Map([" + k + "])";
       k = '["' + d + '",' + k + "]";
       e += (e ? "," : "") + k;
@@ -1741,8 +1729,8 @@ x.serialize = function(a = !0) {
   }
   return a ? "function inject(index){" + c + b + e + "}" : c + b + e;
 };
-ia(O.prototype);
+ia(N.prototype);
 C();
-export default {Index:O, Charset:Sa, Encoder:K, Document:V, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
+export default {Index:N, Charset:Ta, Encoder:J, Document:U, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
 
-export const Index=O;export const  Charset=Sa;export const  Encoder=K;export const  Document=V;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
+export const Index=N;export const  Charset=Ta;export const  Encoder=J;export const  Document=U;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.compact.module.min.js b/dist/flexsearch.compact.module.min.js
index bda1152..367ef74 100644
--- a/dist/flexsearch.compact.module.min.js
+++ b/dist/flexsearch.compact.module.min.js
@@ -1,22 +1,22 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle)
+ * FlexSearch.js v0.8.149 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var x;function B(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(k){return a(b(k))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function C(){return Object.create(null)}function D(a){return"string"===typeof a}
-function H(a){return"object"===typeof a}function I(a,c){if(D(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function aa(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ba=/[^\p{L}\p{N}]+/u,ca=/(\d{3})/g,da=/(\D)(\d{3})/g,ea=/(\d{3})(\D)/g,fa=/[\u0300-\u036f]/g;function K(a={}){if(!this||this.constructor!==K)return new K(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}x=K.prototype;
-x.assign=function(a){this.normalize=B(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
+var w;function B(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(k){return a(b(k))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function C(){return Object.create(null)}function D(a){return"string"===typeof a}
+function G(a){return"object"===typeof a}function H(a,c){if(D(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function aa(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ba=/[^\p{L}\p{N}]+/u,ca=/(\d{3})/g,da=/(\D)(\d{3})/g,ea=/(\d{3})(\D)/g,fa=/[\u0300-\u036f]/g;function J(a={}){if(!this||this.constructor!==J)return new J(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}w=J.prototype;
+w.assign=function(a){this.normalize=B(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
 this.numeric=B(a.numeric,e)}else{try{this.split=B(this.split,ba)}catch(d){this.split=/\s+/}this.numeric=B(a.numeric,B(this.numeric,!0))}this.prepare=B(a.prepare,null,this.prepare);this.finalize=B(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:B(b&&new Set(b),null,this.filter);this.dedupe=B(a.dedupe,!1,this.dedupe);this.matcher=B((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=B((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=B((b=a.stemmer)&&new Map(b),
 null,this.stemmer);this.replacer=B(a.replacer,null,this.replacer);this.minlength=B(a.minlength,1,this.minlength);this.maxlength=B(a.maxlength,0,this.maxlength);this.rtl=B(a.rtl,!1,this.rtl);if(this.cache=b=B(a.cache,!0,this.cache))this.H=null,this.R="number"===typeof b?b:2E5,this.F=new Map,this.G=new Map,this.L=this.K=128;this.h="";this.M=null;this.D="";this.N=null;if(this.matcher)for(const d of this.matcher.keys())this.h+=(this.h?"|":"")+d;if(this.stemmer)for(const d of this.stemmer.keys())this.D+=
-(this.D?"|":"")+d;return this};x.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.D+=(this.D?"|":"")+a;this.N=null;this.cache&&L(this);return this};x.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&L(this);return this};
-x.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&L(this);return this};x.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&L(this);return this};
-x.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&L(this);return this};
-x.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.F.has(a))return this.F.get(a)}else this.H=setTimeout(L,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=fa?a.normalize("NFKD").replace(fa,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(da,"$1 $2").replace(ea,"$1 $2").replace(ca,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
-[],e=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,k;f<e.length;f++)if((g=k=e[f])&&!(g.length<this.minlength))if(c)b.push(g);else if(!this.filter||("function"===typeof this.filter?this.filter(g):!this.filter.has(g))){if(this.cache&&g.length<=this.L)if(this.H){var d=this.G.get(g);if(d||""===d){d&&b.push(d);continue}}else this.H=setTimeout(L,50,this);this.stemmer&&2<g.length&&(this.N||(this.N=new RegExp("(?!^)("+this.D+")$")),d=g,g=g.replace(this.N,h=>this.stemmer.get(h)),d!==g&&this.filter&&
+(this.D?"|":"")+d;return this};w.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.D+=(this.D?"|":"")+a;this.N=null;this.cache&&K(this);return this};w.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&K(this);return this};
+w.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&K(this);return this};w.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&K(this);return this};
+w.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&K(this);return this};
+w.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.F.has(a))return this.F.get(a)}else this.H=setTimeout(K,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=fa?a.normalize("NFKD").replace(fa,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(da,"$1 $2").replace(ea,"$1 $2").replace(ca,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
+[],e=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,k;f<e.length;f++)if((g=k=e[f])&&!(g.length<this.minlength))if(c)b.push(g);else if(!this.filter||("function"===typeof this.filter?this.filter(g):!this.filter.has(g))){if(this.cache&&g.length<=this.L)if(this.H){var d=this.G.get(g);if(d||""===d){d&&b.push(d);continue}}else this.H=setTimeout(K,50,this);this.stemmer&&2<g.length&&(this.N||(this.N=new RegExp("(?!^)("+this.D+")$")),d=g,g=g.replace(this.N,h=>this.stemmer.get(h)),d!==g&&this.filter&&
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+w.import=function(a,c){var b=a.split(".");"json"===b[b.length-1]&&b.pop();a=2<b.length?b[0]:"";b=2<b.length?b[2]:b[1];if(c){"string"===typeof c&&(c=JSON.parse(c));if(a)return this.index.get(a).import(b,c);switch(b){case "reg":this.fastupdate=!1;this.reg=sa(c,this.reg);for(let e=0,d;e<this.field.length;e++)d=this.index.get(this.field[e]),d.fastupdate=!1,d.reg=this.reg;break;case "tag":this.tag=qa(c,this.tag);break;case "doc":this.store=oa(c,this.store)}}};ia(U.prototype);function Ma(a,c,b){a=("object"===typeof a?""+a.query:a).toLowerCase();this.cache||(this.cache=new X);let e=this.cache.get(a);if(!e){e=this.search(a,c,b);if(e.then){const d=this;e.then(function(f){d.cache.set(a,f);return f})}this.cache.set(a,e)}return e}function X(a){this.limit=a&&!0!==a?a:1E3;this.cache=new Map;this.h=""}X.prototype.set=function(a,c){this.cache.set(this.h=a,c);this.cache.size>this.limit&&this.cache.delete(this.cache.keys().next().value)};
+X.prototype.get=function(a){const c=this.cache.get(a);c&&this.h!==a&&(this.cache.delete(a),this.cache.set(this.h=a,c));return c};X.prototype.remove=function(a){for(const c of this.cache){const b=c[0];c[1].includes(a)&&this.cache.delete(b)}};X.prototype.clear=function(){this.cache.clear();this.h=""};const Na={normalize:!1,numeric:!1};const Oa={};const Pa=new Map([["b","p"],["v","f"],["w","f"],["z","s"],["x","s"],["d","t"],["n","m"],["c","k"],["g","k"],["j","k"],["q","k"],["i","e"],["y","e"],["u","o"]]);const Qa=new Map([["ae","a"],["oe","o"],["sh","s"],["kh","k"],["th","t"],["ph","f"],["pf","f"]]),Ra=[/([^aeo])h(.)/g,"$1$2",/([aeo])h([^aeo]|$)/g,"$1$2",/(.)\1+/g,"$1"];const Sa={a:"",e:"",i:"",o:"",u:"",y:"",b:1,f:1,p:1,v:1,c:2,g:2,j:2,k:2,q:2,s:2,x:2,z:2,"\u00df":2,d:3,t:3,l:4,m:5,n:5,r:6};var Ta={W:Na,V:Oa,X:Oa,LatinBalance:{dedupe:!0,mapper:Pa},LatinAdvanced:{dedupe:!0,mapper:Pa,matcher:Qa,replacer:Ra},LatinExtra:{dedupe:!0,mapper:Pa,replacer:Ra.concat([/(?!^)[aeo]/g,""]),matcher:Qa},LatinSoundex:{dedupe:!1,include:{letter:!0},finalize:function(a){for(let b=0;b<a.length;b++){var c=a[b];let e=c.charAt(0),d=Sa[e];for(let f=1,g;f<c.length&&(g=c.charAt(f),"h"===g||"w"===g||!(g=Sa[g])||g===d||(e+=g,d=g,4!==e.length));f++);a[b]=e}}},LatinExact:Na,LatinDefault:Oa,LatinSimple:Oa};N.prototype.remove=function(a,c){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let e=0,d;e<b.length;e++){if(d=b[e])if(2>d.length)d.pop();else{const f=d.indexOf(a);f===b.length-1?d.pop():d.splice(f,1)}}else Y(this.map,a),this.depth&&Y(this.ctx,a);c||this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
+function Y(a,c){let b=0;var e="undefined"===typeof c;if(a.constructor===Array)for(let d=0,f,g;d<a.length;d++){if((f=a[d])&&f.length)if(e)b++;else if(g=f.indexOf(c),0<=g){1<f.length?(f.splice(g,1),b++):delete a[d];break}else b++}else for(let d of a.entries()){e=d[0];const f=Y(d[1],c);f?b+=f:a.delete(e)}return b};const Va={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};N.prototype.add=function(a,c,b,e){if(c&&(a||0===a)){if(!e&&!b&&this.reg.has(a))return this.update(a,c);c=this.encoder.encode(c);if(e=c.length){const l=C(),m=C(),n=this.depth,u=this.resolution;for(let p=0;p<e;p++){let q=c[this.rtl?e-1-p:p];var d=q.length;if(d&&(n||!m[q])){var f=this.score?this.score(c,q,p,null,0):Wa(u,e,p),g="";switch(this.tokenize){case "full":if(2<d){for(let r=0,t;r<d;r++)for(f=d;f>r;f--){g=q.substring(r,f);t=this.rtl?d-1-r:r;var k=this.score?this.score(c,q,p,g,t):Wa(u,e,p,d,t);
+Z(this,m,g,k,a,b)}break}case "bidirectional":case "reverse":if(1<d){for(k=d-1;0<k;k--){g=q[this.rtl?d-1-k:k]+g;var h=this.score?this.score(c,q,p,g,k):Wa(u,e,p,d,k);Z(this,m,g,h,a,b)}g=""}case "forward":if(1<d){for(k=0;k<d;k++)g+=q[this.rtl?d-1-k:k],Z(this,m,g,f,a,b);break}default:if(Z(this,m,q,f,a,b),n&&1<e&&p<e-1)for(d=C(),g=this.S,f=q,k=Math.min(n+1,this.rtl?p+1:e-p),d[f]=1,h=1;h<k;h++)if((q=c[this.rtl?e-1-p-h:p+h])&&!d[q]){d[q]=1;const r=this.score?this.score(c,f,p,q,h-1):Wa(g+(e/2>g?0:1),e,p,
+k-1,h-1),t=this.bidirectional&&q>f;Z(this,l,t?f:q,r,a,b,t?q:f)}}}}this.fastupdate||this.reg.add(a)}}return this};function Z(a,c,b,e,d,f,g){let k=g?a.ctx:a.map,h;if(!c[b]||g&&!(h=c[b])[g])g?(c=h||(c[b]=C()),c[g]=1,(h=k.get(g))?k=h:k.set(g,k=new Map)):c[b]=1,(h=k.get(b))?k=h:k.set(b,k=[]),k=k[e]||(k[e]=[]),f&&k.includes(d)||(k.push(d),a.fastupdate&&((c=a.reg.get(d))?c.push(k):a.reg.set(d,[k])))}function Wa(a,c,b,e,d){return b&&1<a?c+(e||0)<=a?b+(d||0):(a-1)/(c+(e||0))*(b+(d||0))+1|0:0};N.prototype.search=function(a,c,b){b||(!c&&G(a)?(b=a,a=""):G(c)&&(b=c,c=0));var e=[],d=0;if(b){a=b.query||a;c=b.limit||c;d=b.offset||0;var f=b.context;var g=b.suggest;var k=!0;var h=b.resolution}else k=!0;a=this.encoder.encode(a);b=a.length;c=c||(k?100:0);if(1===b)return g=c,(c=Xa(this,a[0],""))&&c.length?Aa.call(this,c,g,d):[];f=this.depth&&!1!==f;if(2===b&&f&&!g)return g=c,(c=Xa(this,a[1],a[0]))&&c.length?Aa.call(this,c,g,d):[];k=C();let l=0;if(1<b&&f){var m=a[0];l=1}h||0===h||(h=m?this.S:this.resolution);
+for(let q,r;l<b;l++){if((r=a[l])&&!k[r]){k[r]=1;q=Xa(this,r,m);a:{f=q;var n=e,u=g,p=h;let t=[];if(f&&f.length){if(f.length<=p){n.push(f);q=void 0;break a}for(let x=0,z;x<p;x++)if(z=f[x])t[x]=z;if(t.length){n.push(t);q=void 0;break a}}q=u?void 0:t}if(q){e=q;break}m&&(g&&q&&e.length||(m=r))}g&&m&&l===b-1&&!e.length&&(h=this.resolution,m="",l=-1,k=C())}a:{a=e;e=a.length;m=a;if(1<e)m=xa(a,h,c,d,g);else if(1===e){g=Aa.call(null,a[0],c,d);break a}g=m}return g};
+function Xa(a,c,b){let e;b&&(e=a.bidirectional&&c>b)&&(e=b,b=c,c=e);a=b?(a=a.ctx.get(b))&&a.get(c):a.map.get(c);return a};function N(a,c){if(!this||this.constructor!==N)return new N(a);if(a){var b=D(a)?a:a.preset;b&&(a=Object.assign({},Va[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=D(a.encoder)?Ta[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new J(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
+this.score=a.score||null;b=!1;this.map=new Map;this.ctx=new Map;this.reg=c||(this.fastupdate?new Map:new Set);this.S=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new X(b);this.priority=a.priority||4}w=N.prototype;w.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};w.append=function(a,c){return this.add(a,c,!0)};w.contain=function(a){return this.reg.has(a)};
+w.update=function(a,c){const b=this,e=this.remove(a);return e&&e.then?e.then(()=>b.add(a,c)):this.add(a,c)};w.cleanup=function(){if(!this.fastupdate)return this;Y(this.map);this.depth&&Y(this.ctx);return this};w.searchCache=Ma;w.export=function(a,c,b=0,e=0){let d,f;switch(e){case 0:d="reg";f=ra(this.reg);break;case 1:d="cfg";f=null;break;case 2:d="map";f=na(this.map,this.reg.size);break;case 3:d="ctx";f=pa(this.ctx,this.reg.size);break;default:return}return ta.call(this,a,c,d,f,b,e)};
+w.import=function(a,c){if(c)switch("string"===typeof c&&(c=JSON.parse(c)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=sa(c,this.reg);break;case "map":this.map=oa(c,this.map);break;case "ctx":this.ctx=qa(c,this.ctx)}};
+w.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=ua(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let k=ua(g[1],f);k="new Map(["+k+"])";k='["'+d+'",'+k+"]";e+=(e?",":"")+k}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};ia(N.prototype);C();export default {Index:N,Charset:Ta,Encoder:J,Document:U,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
+export const Index=N;export const Charset=Ta;export const Encoder=J;export const Document=U;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.es5.debug.js b/dist/flexsearch.es5.debug.js
index 97c286d..517897e 100644
--- a/dist/flexsearch.es5.debug.js
+++ b/dist/flexsearch.es5.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.147 (ES5/Debug)
+ * FlexSearch.js v0.8.149 (ES5/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -13,7 +13,7 @@ function aa(a) {
     return b < a.length ? {done:!1, value:a[b++]} : {done:!0};
   };
 }
-function x(a) {
+function y(a) {
   var b = "undefined" != typeof Symbol && Symbol.iterator && a[Symbol.iterator];
   if (b) {
     return b.call(a);
@@ -109,7 +109,7 @@ ja.prototype.return = function(a) {
   this.B = {return:a};
   this.h = this.H;
 };
-function E(a, b, c) {
+function D(a, b, c) {
   a.h = c;
   return {value:b};
 }
@@ -451,13 +451,13 @@ C("Promise", function(a) {
   };
   b.race = function(f) {
     return new b(function(h, k) {
-      for (var l = x(f), m = l.next(); !m.done; m = l.next()) {
+      for (var l = y(f), m = l.next(); !m.done; m = l.next()) {
         d(m.value).U(h, k);
       }
     });
   };
   b.all = function(f) {
-    var h = x(f), k = h.next();
+    var h = y(f), k = h.next();
     return k.done ? d([]) : new b(function(l, m) {
       function n(t) {
         return function(w) {
@@ -510,7 +510,7 @@ C("WeakMap", function(a) {
   function b(k) {
     this.h = (h += Math.random() + 1).toString();
     if (k) {
-      k = x(k);
+      k = y(k);
       for (var l; !(l = k.next()).done;) {
         l = l.value, this.set(l[0], l[1]);
       }
@@ -622,7 +622,7 @@ C("Map", function(a) {
     this[1] = b();
     this.size = 0;
     if (h) {
-      h = x(h);
+      h = y(h);
       for (var k; !(k = h.next()).done;) {
         k = k.value, this.set(k[0], k[1]);
       }
@@ -633,7 +633,7 @@ C("Map", function(a) {
       return !1;
     }
     try {
-      var h = Object.seal({x:4}), k = new a(x([[h, "s"]]));
+      var h = Object.seal({x:4}), k = new a(y([[h, "s"]]));
       if ("s" != k.get(h) || 1 != k.size || k.get({x:4}) || k.set({x:4}, "t") != k || 2 != k.size) {
         return !1;
       }
@@ -700,7 +700,7 @@ C("Set", function(a) {
   function b(c) {
     this.h = new Map();
     if (c) {
-      c = x(c);
+      c = y(c);
       for (var d; !(d = c.next()).done;) {
         this.add(d.value);
       }
@@ -712,7 +712,7 @@ C("Set", function(a) {
       return !1;
     }
     try {
-      var c = Object.seal({x:4}), d = new a(x([c]));
+      var c = Object.seal({x:4}), d = new a(y([c]));
       if (!d.has(c) || 1 != d.size || d.add(c) != d || 1 != d.size || d.add({x:4}) != d || 2 != d.size) {
         return !1;
       }
@@ -854,7 +854,7 @@ function G(a, b, c) {
           }
           if (b === Map) {
             b = new Map(c);
-            d = x(a);
+            d = y(a);
             for (e = d.next(); !e.done; e = d.next()) {
               e = e.value, b.set(e[0], e[1]);
             }
@@ -862,7 +862,7 @@ function G(a, b, c) {
           }
           if (b === Set) {
             b = new Set(c);
-            d = x(a.values());
+            d = y(a.values());
             for (e = d.next(); !e.done; e = d.next()) {
               b.add(e.value);
             }
@@ -876,25 +876,25 @@ function G(a, b, c) {
   }
   return "undefined" === e ? b : a;
 }
-function J() {
+function I() {
   return Object.create(null);
 }
-function K(a) {
+function J(a) {
   return "string" === typeof a;
 }
-function L(a) {
+function K(a) {
   return "object" === typeof a;
 }
 function xa(a) {
   var b = [];
-  a = x(a.keys());
+  a = y(a.keys());
   for (var c = a.next(); !c.done; c = a.next()) {
     b.push(c.value);
   }
   return b;
 }
 function ya(a, b) {
-  if (K(b)) {
+  if (J(b)) {
     a = a[b];
   } else {
     for (var c = 0; a && c < b.length; c++) {
@@ -917,7 +917,7 @@ function Fa(a) {
     if (arguments instanceof Array) {
       var g = arguments;
     } else {
-      g = x(arguments);
+      g = y(arguments);
       for (var f, h = []; !(f = g.next()).done;) {
         h.push(f.value);
       }
@@ -987,12 +987,12 @@ u.assign = function(a) {
   this.A = "";
   this.N = null;
   if (this.matcher) {
-    for (a = x(this.matcher.keys()), b = a.next(); !b.done; b = a.next()) {
+    for (a = y(this.matcher.keys()), b = a.next(); !b.done; b = a.next()) {
       this.h += (this.h ? "|" : "") + b.value;
     }
   }
   if (this.stemmer) {
-    for (a = x(this.stemmer.keys()), b = a.next(); !b.done; b = a.next()) {
+    for (a = y(this.stemmer.keys()), b = a.next(); !b.done; b = a.next()) {
       this.A += (this.A ? "|" : "") + b.value;
     }
   }
@@ -1003,12 +1003,12 @@ u.addStemmer = function(a, b) {
   this.stemmer.set(a, b);
   this.A += (this.A ? "|" : "") + a;
   this.N = null;
-  this.cache && N(this);
+  this.cache && M(this);
   return this;
 };
 u.addFilter = function(a) {
   "function" === typeof a ? this.filter = a : (this.filter || (this.filter = new Set()), this.filter.add(a));
-  this.cache && N(this);
+  this.cache && M(this);
   return this;
 };
 u.addMapper = function(a, b) {
@@ -1020,7 +1020,7 @@ u.addMapper = function(a, b) {
   }
   this.mapper || (this.mapper = new Map());
   this.mapper.set(a, b);
-  this.cache && N(this);
+  this.cache && M(this);
   return this;
 };
 u.addMatcher = function(a, b) {
@@ -1034,7 +1034,7 @@ u.addMatcher = function(a, b) {
   this.matcher.set(a, b);
   this.h += (this.h ? "|" : "") + a;
   this.M = null;
-  this.cache && N(this);
+  this.cache && M(this);
   return this;
 };
 u.addReplacer = function(a, b) {
@@ -1043,7 +1043,7 @@ u.addReplacer = function(a, b) {
   }
   this.replacer || (this.replacer = []);
   this.replacer.push(a, b);
-  this.cache && N(this);
+  this.cache && M(this);
   return this;
 };
 u.encode = function(a) {
@@ -1054,7 +1054,7 @@ u.encode = function(a) {
         return this.B.get(a);
       }
     } else {
-      this.D = setTimeout(N, 50, this);
+      this.D = setTimeout(M, 50, this);
     }
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = Ea ? a.normalize("NFKD").replace(Ea, "").toLowerCase() : a.toLowerCase());
@@ -1074,7 +1074,7 @@ u.encode = function(a) {
                 continue;
               }
             } else {
-              this.D = setTimeout(N, 50, this);
+              this.D = setTimeout(M, 50, this);
             }
           }
           this.stemmer && 2 < f.length && (this.N || (this.N = new RegExp("(?!^)(" + this.A + ")$")), k = f, f = f.replace(this.N, function(q) {
@@ -1105,7 +1105,7 @@ u.encode = function(a) {
   this.cache && a.length <= this.G && (this.B.set(a, d), this.B.size > this.T && (this.B.clear(), this.G = this.G / 1.1 | 0));
   return d;
 };
-function N(a) {
+function M(a) {
   a.D = null;
   a.B.clear();
   a.C.clear();
@@ -1146,14 +1146,14 @@ function Ha(a) {
             h.h = 5;
             break;
           }
-          return E(h, O.import.call(Ga, d[0]), 9);
+          return D(h, O.import.call(Ga, d[0]), 9);
         }
         g = d && Ga[b].apply(Ga, d);
         if (!g || !g.then) {
           h.h = 5;
           break;
         }
-        return E(h, g, 7);
+        return D(h, g, 7);
       case 7:
         g = h.D;
         h.h = 5;
@@ -1172,9 +1172,9 @@ function Ha(a) {
   Ja.call(a, "update");
   Ja.call(a, "remove");
 }
-var Ma, Na, Oa;
+var Ka, Na, Oa;
 function Pa() {
-  Ma = Oa = 0;
+  Ka = Oa = 0;
 }
 function Ja(a) {
   this[a + "Async"] = function() {
@@ -1183,7 +1183,7 @@ function Ja(a) {
       var d = c;
       delete b[b.length - 1];
     }
-    Ma ? Oa || (Oa = Date.now() - Na >= this.priority * this.priority * 3) : (Ma = setTimeout(Pa, 0), Na = Date.now());
+    Ka ? Oa || (Oa = Date.now() - Na >= this.priority * this.priority * 3) : (Ka = setTimeout(Pa, 0), Na = Date.now());
     if (Oa) {
       var e = this;
       return new Promise(function(f) {
@@ -1209,7 +1209,7 @@ function Ra(a) {
       m && (m(k.msg), delete e.h[l]);
     }
     this.worker = f;
-    this.h = J();
+    this.h = I();
     if (this.worker) {
       d ? this.worker.on("message", h) : this.worker.onmessage = h;
       if (a.config) {
@@ -1269,7 +1269,7 @@ function Sa(a, b, c) {
   b = void 0 === b ? 0 : b;
   var c = [], d = [];
   b && (b = 250000 / b * 5000 | 0);
-  a = x(a.entries());
+  a = y(a.entries());
   for (var e = a.next(); !e.done; e = a.next()) {
     d.push(e.value), d.length === b && (c.push(d), d = []);
   }
@@ -1287,7 +1287,7 @@ function Va(a, b) {
   b = void 0 === b ? 0 : b;
   var c = [], d = [];
   b && (b = 250000 / b * 1000 | 0);
-  a = x(a.entries());
+  a = y(a.entries());
   for (var e = a.next(); !e.done; e = a.next()) {
     e = e.value, d.push([e[0], Ta(e[1])[0]]), d.length === b && (c.push(d), d = []);
   }
@@ -1303,7 +1303,7 @@ function Wa(a, b) {
 }
 function Xa(a) {
   var b = [], c = [];
-  a = x(a.keys());
+  a = y(a.keys());
   for (var d = a.next(); !d.done; d = a.next()) {
     c.push(d.value), 250000 === c.length && (b.push(c), c = []);
   }
@@ -1333,7 +1333,7 @@ function Za(a, b, c, d, e, g, f) {
 }
 function $a(a, b) {
   var c = "";
-  a = x(a.entries());
+  a = y(a.entries());
   for (var d = a.next(); !d.done; d = a.next()) {
     var e = d.value;
     d = e[0];
@@ -1450,7 +1450,7 @@ function U(a) {
   if (!this || this.constructor !== U) {
     return new U(a);
   }
-  this.index = J();
+  this.index = I();
   this.h = [];
   this.size = 0;
   32 < a ? (this.A = bb, this.B = BigInt(a)) : (this.A = cb, this.B = a);
@@ -1468,7 +1468,7 @@ function V(a) {
   if (!this || this.constructor !== V) {
     return new V(a);
   }
-  this.index = J();
+  this.index = I();
   this.h = [];
   this.size = 0;
   32 < a ? (this.A = bb, this.B = BigInt(a)) : (this.A = cb, this.B = a);
@@ -1487,7 +1487,7 @@ u.delete = V.prototype.delete = function(a) {
   (b = this.index[b]) && b.delete(a) && this.size--;
 };
 u.clear = V.prototype.clear = function() {
-  this.index = J();
+  this.index = I();
   this.h = [];
   this.size = 0;
 };
@@ -1502,7 +1502,7 @@ u.values = V.prototype.values = function db() {
           f.h = 0;
           break;
         }
-        d = x(c.h[b].values());
+        d = y(c.h[b].values());
         e = d.next();
       case 5:
         if (e.done) {
@@ -1511,7 +1511,7 @@ u.values = V.prototype.values = function db() {
           break;
         }
         g = e.value;
-        return E(f, g, 6);
+        return D(f, g, 6);
       case 6:
         e = d.next(), f.h = 5;
     }
@@ -1528,7 +1528,7 @@ u.keys = V.prototype.keys = function eb() {
           f.h = 0;
           break;
         }
-        d = x(c.h[b].keys());
+        d = y(c.h[b].keys());
         e = d.next();
       case 5:
         if (e.done) {
@@ -1537,7 +1537,7 @@ u.keys = V.prototype.keys = function eb() {
           break;
         }
         g = e.value;
-        return E(f, g, 6);
+        return D(f, g, 6);
       case 6:
         e = d.next(), f.h = 5;
     }
@@ -1554,7 +1554,7 @@ u.entries = V.prototype.entries = function fb() {
           f.h = 0;
           break;
         }
-        d = x(c.h[b].entries());
+        d = y(c.h[b].entries());
         e = d.next();
       case 5:
         if (e.done) {
@@ -1563,7 +1563,7 @@ u.entries = V.prototype.entries = function fb() {
           break;
         }
         g = e.value;
-        return E(f, g, 6);
+        return D(f, g, 6);
       case 6:
         e = d.next(), f.h = 5;
     }
@@ -1583,7 +1583,7 @@ function bb() {
   throw Error("The keystore is limited to 32 for EcmaScript5");
 }
 ;W.prototype.add = function(a, b, c) {
-  L(a) && (b = a, a = ya(b, this.key));
+  K(a) && (b = a, a = ya(b, this.key));
   if (b && (a || 0 === a)) {
     if (!c && this.reg.has(a)) {
       return this.update(a, b);
@@ -1596,7 +1596,7 @@ function bb() {
       } else {
         var f = e.R;
         if (!f || f(b)) {
-          e.constructor === String ? e = ["" + e] : K(e) && (e = [e]), gb(b, e, this.S, 0, g, a, e[0], c);
+          e.constructor === String ? e = ["" + e] : J(e) && (e = [e]), gb(b, e, this.S, 0, g, a, e[0], c);
         }
       }
     }
@@ -1605,7 +1605,7 @@ function bb() {
         f = this.L[d];
         var h = this.aa[d];
         g = this.tag.get(h);
-        e = J();
+        e = I();
         if ("function" === typeof f) {
           if (f = f(b), !f) {
             continue;
@@ -1619,7 +1619,7 @@ function bb() {
           f = ya(b, f);
         }
         if (g && f) {
-          for (K(f) && (f = [f]), h = 0, k = void 0; h < f.length; h++) {
+          for (J(f) && (f = [f]), h = 0, k = void 0; h < f.length; h++) {
             var l = f[h];
             if (!e[l]) {
               e[l] = 1;
@@ -1629,7 +1629,7 @@ function bb() {
                 if (k.length === Math.pow(2, 31) - 1) {
                   m = new T(k);
                   if (this.fastupdate) {
-                    for (var n = x(this.reg.values()), p = n.next(); !p.done; p = n.next()) {
+                    for (var n = y(this.reg.values()), p = n.next(); !p.done; p = n.next()) {
                       p = p.value, p.includes(k) && (p[p.indexOf(k)] = m);
                     }
                   }
@@ -1647,7 +1647,7 @@ function bb() {
     }
     if (this.store && (!c || !this.store.has(a))) {
       if (this.I) {
-        var q = J();
+        var q = I();
         for (c = 0; c < this.I.length; c++) {
           if (d = this.I[c], g = d.R, !g || g(b)) {
             g = void 0;
@@ -1657,7 +1657,7 @@ function bb() {
                 continue;
               }
               d = [d.ja];
-            } else if (K(d) || d.constructor === String) {
+            } else if (J(d) || d.constructor === String) {
               q[d] = b[d];
               continue;
             }
@@ -1681,7 +1681,7 @@ function hb(a, b, c, d, e, g) {
         hb(a, b, c, d, e);
       }
     } else {
-      b = b[e] || (b[e] = J()), e = c[++d], hb(a, b, c, d, e);
+      b = b[e] || (b[e] = I()), e = c[++d], hb(a, b, c, d, e);
     }
   }
 }
@@ -1713,7 +1713,7 @@ function gb(a, b, c, d, e, g, f, h) {
 }
 ;function ib(a, b, c, d, e, g, f) {
   var h = a.length, k = [];
-  var l = J();
+  var l = I();
   for (var m = 0, n = void 0, p, q; m < b; m++) {
     for (var t = 0; t < h; t++) {
       var w = a[t];
@@ -1723,12 +1723,12 @@ function gb(a, b, c, d, e, g, f, h) {
           (w = l[p]) ? l[p]++ : (w = 0, l[p] = 1);
           q = k[w] || (k[w] = []);
           if (!f) {
-            var A = m + (t || !e ? 0 : g || 0);
-            q = q[A] || (q[A] = []);
+            var z = m + (t || !e ? 0 : g || 0);
+            q = q[z] || (q[z] = []);
           }
           q.push(p);
           if (f && c && w === h - 1 && q.length - d === c) {
-            return q;
+            return d ? q.slice(d) : q;
           }
         }
       }
@@ -1770,7 +1770,7 @@ function gb(a, b, c, d, e, g, f, h) {
   return k;
 }
 function jb(a, b, c, d, e) {
-  var g = [], f = J(), h = a.length, k;
+  var g = [], f = I(), h = a.length, k;
   if (d) {
     for (e = h - 1; 0 <= e; e--) {
       if (k = (d = a[e]) && d.length) {
@@ -1813,7 +1813,7 @@ function jb(a, b, c, d, e) {
   return g;
 }
 function kb(a, b, c) {
-  for (var d = J(), e = [], g = 0, f; g < b.length; g++) {
+  for (var d = I(), e = [], g = 0, f; g < b.length; g++) {
     f = b[g];
     for (var h = 0; h < f.length; h++) {
       d[f[h]] = 1;
@@ -1991,7 +1991,7 @@ function pb(a, b, c, d, e, g, f) {
   return g ? this.resolve(c, d, e) : this;
 }
 function qb(a, b, c, d, e) {
-  for (var g = [], f = J(), h = 0, k = 0, l; k < a.length; k++) {
+  for (var g = [], f = I(), h = 0, k = 0, l; k < a.length; k++) {
     if (l = a[k]) {
       h < l.length && (h = l.length);
       for (var m = 0, n; m < l.length; m++) {
@@ -2130,9 +2130,9 @@ Y.prototype.resolve = function(a, b, c) {
   this.result = this.index = null;
   return d.length ? ("object" === typeof a && (c = a.enrich, b = a.offset, a = a.limit), lb.call(e, d, a || 100, b, c)) : d;
 };
-J();
+I();
 W.prototype.search = function(a, b, c, d) {
-  c || (!b && L(a) ? (c = a, a = "") : L(b) && (c = b, b = 0));
+  c || (!b && K(a) ? (c = a, a = "") : K(b) && (c = b, b = 0));
   var e = [], g = [], f, h = 0, k = !0;
   if (c) {
     c.constructor === Array && (c = {index:c});
@@ -2145,7 +2145,7 @@ W.prototype.search = function(a, b, c, d) {
     k = !1 !== c.resolve;
     if (!k && !l) {
       if (n = n || this.field) {
-        K(n) ? l = n : (n.constructor === Array && 1 === n.length && (n = n[0]), l = n.field || n.index);
+        J(n) ? l = n : (n.constructor === Array && 1 === n.length && (n = n[0]), l = n.field || n.index);
       }
       if (!l) {
         throw Error("Apply resolver on document search requires either the option 'pluck' to be set or just select a single field name in your query.");
@@ -2158,30 +2158,30 @@ W.prototype.search = function(a, b, c, d) {
     b || (b = 100);
     if (p && (!this.db || !d)) {
       p.constructor !== Array && (p = [p]);
-      for (var r = [], A = 0, z = void 0; A < p.length; A++) {
-        z = p[A];
-        if (K(z)) {
+      for (var r = [], z = 0, A = void 0; z < p.length; z++) {
+        A = p[z];
+        if (J(A)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
-        if (z.field && z.tag) {
-          var v = z.tag;
+        if (A.field && A.tag) {
+          var v = A.tag;
           if (v.constructor === Array) {
-            for (var y = 0; y < v.length; y++) {
-              r.push(z.field, v[y]);
+            for (var x = 0; x < v.length; x++) {
+              r.push(A.field, v[x]);
             }
           } else {
-            r.push(z.field, v);
+            r.push(A.field, v);
           }
         } else {
-          v = Object.keys(z);
-          y = 0;
-          for (var D = void 0, H = void 0; y < v.length; y++) {
-            if (D = v[y], H = z[D], H.constructor === Array) {
-              for (var I = 0; I < H.length; I++) {
-                r.push(D, H[I]);
+          v = Object.keys(A);
+          x = 0;
+          for (var E = void 0, N = void 0; x < v.length; x++) {
+            if (E = v[x], N = A[E], N.constructor === Array) {
+              for (var H = 0; H < N.length; H++) {
+                r.push(E, N[H]);
               }
             } else {
-              r.push(D, H);
+              r.push(E, N);
             }
           }
         }
@@ -2220,83 +2220,83 @@ W.prototype.search = function(a, b, c, d) {
   }
   n || (n = this.field);
   r = !d && (this.worker || this.db) && [];
-  A = 0;
-  for (y = z = v = void 0; A < n.length; A++) {
-    if (z = n[A], !this.db || !this.tag || this.J[A]) {
+  z = 0;
+  for (x = A = v = void 0; z < n.length; z++) {
+    if (A = n[z], !this.db || !this.tag || this.J[z]) {
       v = void 0;
-      K(z) || (v = z, z = v.field, a = v.query || a, b = v.limit || b, w = v.offset || w, q = v.suggest || q, f = this.store && (v.enrich || f));
+      J(A) || (v = A, A = v.field, a = v.query || a, b = v.limit || b, w = v.offset || w, q = v.suggest || q, f = this.store && (v.enrich || f));
       if (d) {
-        v = d[A];
+        v = d[z];
       } else {
-        y = v || c;
-        v = this.index.get(z);
+        x = v || c;
+        v = this.index.get(A);
         if (p) {
           if (this.db) {
-            y.tag = p;
-            var Ka = v.db.support_tag_search;
-            y.field = n;
+            x.tag = p;
+            var La = v.db.support_tag_search;
+            x.field = n;
           }
-          Ka || (y.enrich = !1);
+          La || (x.enrich = !1);
         }
         if (r) {
-          r[A] = v.search(a, b, y);
-          y && f && (y.enrich = f);
+          r[z] = v.search(a, b, x);
+          x && f && (x.enrich = f);
           continue;
         } else {
-          v = v.search(a, b, y), y && f && (y.enrich = f);
+          v = v.search(a, b, x), x && f && (x.enrich = f);
         }
       }
-      y = v && (k ? v.length : v.result.length);
-      if (p && y) {
-        D = [];
-        H = 0;
+      x = v && (k ? v.length : v.result.length);
+      if (p && x) {
+        E = [];
+        N = 0;
         if (this.db && d) {
-          if (!Ka) {
-            for (I = n.length; I < d.length; I++) {
-              var M = d[I];
-              if (M && M.length) {
-                H++, D.push(M);
+          if (!La) {
+            for (H = n.length; H < d.length; H++) {
+              var L = d[H];
+              if (L && L.length) {
+                N++, E.push(L);
               } else if (!q) {
                 return k ? e : new Y(e);
               }
             }
           }
         } else {
-          I = 0;
-          for (var Yb = M = void 0; I < p.length; I += 2) {
-            M = this.tag.get(p[I]);
-            if (!M) {
-              if (console.warn("Tag '" + p[I] + ":" + p[I + 1] + "' will be skipped because there is no field '" + p[I] + "'."), q) {
+          H = 0;
+          for (var Xb = L = void 0; H < p.length; H += 2) {
+            L = this.tag.get(p[H]);
+            if (!L) {
+              if (console.warn("Tag '" + p[H] + ":" + p[H + 1] + "' will be skipped because there is no field '" + p[H] + "'."), q) {
                 continue;
               } else {
                 return k ? e : new Y(e);
               }
             }
-            if (Yb = (M = M && M.get(p[I + 1])) && M.length) {
-              H++, D.push(M);
+            if (Xb = (L = L && L.get(p[H + 1])) && L.length) {
+              N++, E.push(L);
             } else if (!q) {
               return k ? e : new Y(e);
             }
           }
         }
-        if (H) {
-          v = kb(v, D, k);
-          y = v.length;
-          if (!y && !q) {
+        if (N) {
+          v = kb(v, E, k);
+          x = v.length;
+          if (!x && !q) {
             return k ? v : new Y(v);
           }
-          H--;
+          N--;
         }
       }
-      if (y) {
-        g[h] = z, e.push(v), h++;
+      if (x) {
+        g[h] = A, e.push(v), h++;
       } else if (1 === n.length) {
         return k ? e : new Y(e);
       }
     }
   }
   if (r) {
-    if (this.db && p && p.length && !Ka) {
+    if (this.db && p && p.length && !La) {
       for (f = 0; f < p.length; f += 2) {
         g = this.index.get(p[f]);
         if (!g) {
@@ -2309,9 +2309,9 @@ W.prototype.search = function(a, b, c, d) {
         r.push(g.db.tag(p[f + 1], b, w, !1));
       }
     }
-    var Zb = this;
+    var Yb = this;
     return Promise.all(r).then(function(Q) {
-      return Q.length ? Zb.search(a, b, c, Q) : Q;
+      return Q.length ? Yb.search(a, b, c, Q) : Q;
     });
   }
   if (!h) {
@@ -2330,12 +2330,12 @@ W.prototype.search = function(a, b, c, d) {
     e[w] = {field:g[w], result:q};
   }
   if (f && this.db && r.length) {
-    var La = this;
+    var Ma = this;
     return Promise.all(r).then(function(Q) {
       for (var R = 0; R < Q.length; R++) {
         e[R].result = Q[R];
       }
-      return m ? ub(e, b) : t ? vb(e, a, La.index, La.field, La.J, t) : e;
+      return m ? ub(e, b) : t ? vb(e, a, Ma.index, Ma.field, Ma.J, t) : e;
     });
   }
   return m ? ub(e, b) : t ? vb(e, a, this.index, this.field, this.J, t) : e;
@@ -2350,28 +2350,29 @@ function vb(a, b, c, d, e, g) {
     m = e[d.indexOf(m)];
     n !== f && (f = n, h = f.encode(b));
     for (n = 0; n < p.length; n++) {
-      var q = "", t = ya(p[n].doc, m), w = f.encode(t);
-      t = t.split(f.split);
-      for (var r = 0, A, z; r < w.length; r++) {
-        if (A = w[r], z = t[r], A && z) {
-          for (var v = void 0, y = 0, D; y < h.length; y++) {
-            if (D = h[y], "strict" === k) {
-              if (A === D) {
-                q += (q ? " " : "") + g.replace("$1", z);
-                v = !0;
+      for (var q = "", t = ya(p[n].doc, m).split(/\s+/), w = 0, r, z; w < t.length; w++) {
+        r = t[w];
+        z = f.encode(r).join(" ");
+        var A = void 0;
+        if (z && r) {
+          for (var v = 0, x; v < h.length; v++) {
+            if (x = h[v], "strict" === k) {
+              if (z === x) {
+                q += (q ? " " : "") + g.replace("$1", r);
+                A = !0;
                 break;
               }
             } else {
-              var H = A.indexOf(D);
-              if (-1 < H) {
-                q += (q ? " " : "") + z.substring(0, H) + g.replace("$1", z.substring(H, D.length)) + z.substring(H + D.length);
-                v = !0;
+              var E = z.indexOf(x);
+              if (-1 < E) {
+                q += (q ? " " : "") + r.substring(0, E) + g.replace("$1", r.substring(E, x.length)) + r.substring(E + x.length);
+                A = !0;
                 break;
               }
             }
           }
-          v || (q += (q ? " " : "") + t[r]);
         }
+        A || (q += (q ? " " : "") + t[w]);
       }
       p[n].highlight = q;
     }
@@ -2379,7 +2380,7 @@ function vb(a, b, c, d, e, g) {
   return a;
 }
 function ub(a, b) {
-  for (var c = [], d = J(), e = 0, g, f; e < a.length; e++) {
+  for (var c = [], d = I(), e = 0, g, f; e < a.length; e++) {
     g = a[e];
     f = g.result;
     for (var h = 0, k, l, m; h < f.length; h++) {
@@ -2459,14 +2460,14 @@ function X(a) {
   if (this.worker) {
     this.fastupdate = !1;
     a = [];
-    c = x(this.index.values());
+    c = y(this.index.values());
     for (b = c.next(); !b.done; b = c.next()) {
       b = b.value, b.then && a.push(b);
     }
     if (a.length) {
       var g = this;
       return Promise.all(a).then(function(f) {
-        for (var h = 0, k = x(g.index.entries()), l = k.next(); !l.done; l = k.next()) {
+        for (var h = 0, k = y(g.index.entries()), l = k.next(); !l.done; l = k.next()) {
           l = l.value;
           var m = l[0];
           l[1].then && g.index.set(m, f[h++]);
@@ -2514,29 +2515,29 @@ u.commit = function(a, b) {
   return ta(function(h) {
     if (1 == h.h) {
       d = [];
-      e = x(c.index.values());
+      e = y(c.index.values());
       for (g = e.next(); !g.done; g = e.next()) {
         f = g.value, d.push(f.commit(a, b));
       }
-      return E(h, Promise.all(d), 2);
+      return D(h, Promise.all(d), 2);
     }
     c.reg.clear();
     h.h = 0;
   });
 };
 u.destroy = function() {
-  for (var a = [], b = x(this.index.values()), c = b.next(); !c.done; c = b.next()) {
+  for (var a = [], b = y(this.index.values()), c = b.next(); !c.done; c = b.next()) {
     a.push(c.value.destroy());
   }
   return Promise.all(a);
 };
 function yb(a, b) {
   var c = new Map(), d = b.index || b.field || b;
-  K(d) && (d = [d]);
+  J(d) && (d = [d]);
   for (var e = 0, g, f = void 0; e < d.length; e++) {
     g = d[e];
-    K(g) || (f = g, g = g.field);
-    f = L(f) ? Object.assign({}, a, f) : a;
+    J(g) || (f = g, g = g.field);
+    f = K(f) ? Object.assign({}, a, f) : a;
     if (this.worker) {
       var h = new Ra(f);
       c.set(g, h);
@@ -2546,7 +2547,7 @@ function yb(a, b) {
     this.field[e] = g;
   }
   if (this.I) {
-    for (a = b.store, K(a) && (a = [a]), b = 0; b < a.length; b++) {
+    for (a = b.store, J(a) && (a = [a]), b = 0; b < a.length; b++) {
       d = a[b], e = d.field || d, d.custom ? (this.I[b] = d.custom, d.custom.ja = e) : (this.I[b] = wb(e, this.S), d.filter && ("string" === typeof this.I[b] && (this.I[b] = new String(this.I[b])), this.I[b].R = d.filter));
     }
   }
@@ -2566,15 +2567,15 @@ u.update = function(a, b) {
   return this.remove(a).add(a, b);
 };
 u.remove = function(a) {
-  L(a) && (a = ya(a, this.key));
-  for (var b = x(this.index.values()), c = b.next(); !c.done; c = b.next()) {
+  K(a) && (a = ya(a, this.key));
+  for (var b = y(this.index.values()), c = b.next(); !c.done; c = b.next()) {
     c.value.remove(a, !0);
   }
   if (this.reg.has(a)) {
     if (this.tag && !this.fastupdate) {
-      for (b = x(this.tag.values()), c = b.next(); !c.done; c = b.next()) {
+      for (b = y(this.tag.values()), c = b.next(); !c.done; c = b.next()) {
         c = c.value;
-        for (var d = x(c), e = d.next(); !e.done; e = d.next()) {
+        for (var d = y(c), e = d.next(); !e.done; e = d.next()) {
           var g = e.value;
           e = g[0];
           g = g[1];
@@ -2590,11 +2591,11 @@ u.remove = function(a) {
   return this;
 };
 u.clear = function() {
-  for (var a = [], b = x(this.index.values()), c = b.next(); !c.done; c = b.next()) {
+  for (var a = [], b = y(this.index.values()), c = b.next(); !c.done; c = b.next()) {
     c = c.value.clear(), c.then && a.push(c);
   }
   if (this.tag) {
-    for (b = x(this.tag.values()), c = b.next(); !c.done; c = b.next()) {
+    for (b = y(this.tag.values()), c = b.next(); !c.done; c = b.next()) {
       c.value.clear();
     }
   }
@@ -2606,7 +2607,7 @@ u.contain = function(a) {
   return this.db ? this.index.get(this.field[0]).db.has(a) : this.reg.has(a);
 };
 u.cleanup = function() {
-  for (var a = x(this.index.values()), b = a.next(); !b.done; b = a.next()) {
+  for (var a = y(this.index.values()), b = a.next(); !b.done; b = a.next()) {
     b.value.cleanup();
   }
   return this;
@@ -2678,7 +2679,7 @@ u.import = function(a, b) {
         }
         if (this.worker) {
           b = [];
-          d = x(this.index.values());
+          d = y(this.index.values());
           for (c = d.next(); !c.done; c = d.next()) {
             b.push(c.value.import(a));
           }
@@ -2726,7 +2727,7 @@ xb.prototype.get = function(a) {
   return b;
 };
 xb.prototype.remove = function(a) {
-  for (var b = x(this.cache), c = b.next(); !c.done; c = b.next()) {
+  for (var b = y(this.cache), c = b.next(); !c.done; c = b.next()) {
     c = c.value;
     var d = c[0];
     c[1].includes(a) && this.cache.delete(d);
@@ -2748,7 +2749,54 @@ var Gb = {na:Ab, ma:Bb, oa:Bb, LatinBalance:{dedupe:!0, mapper:Cb}, LatinAdvance
     a[b] = d;
   }
 }}, LatinExact:Ab, LatinDefault:Bb, LatinSimple:Bb};
-var Hb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+P.prototype.remove = function(a, b) {
+  var c = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (c) {
+    if (this.fastupdate) {
+      for (var d = 0, e; d < c.length; d++) {
+        if (e = c[d]) {
+          if (2 > e.length) {
+            e.pop();
+          } else {
+            var g = e.indexOf(a);
+            g === c.length - 1 ? e.pop() : e.splice(g, 1);
+          }
+        }
+      }
+    } else {
+      Hb(this.map, a), this.depth && Hb(this.ctx, a);
+    }
+    b || this.reg.delete(a);
+  }
+  this.db && (this.commit_task.push({del:a}), this.ca && Ib(this));
+  this.cache && this.cache.remove(a);
+  return this;
+};
+function Hb(a, b) {
+  var c = 0, d = "undefined" === typeof b;
+  if (a.constructor === Array) {
+    for (var e = 0, g = void 0, f; e < a.length; e++) {
+      if ((g = a[e]) && g.length) {
+        if (d) {
+          c++;
+        } else {
+          if (f = g.indexOf(b), 0 <= f) {
+            1 < g.length ? (g.splice(f, 1), c++) : delete a[e];
+            break;
+          } else {
+            c++;
+          }
+        }
+      }
+    }
+  } else {
+    for (d = y(a.entries()), e = d.next(); !e.done; e = d.next()) {
+      g = e.value, e = g[0], (g = Hb(g[1], b)) ? c += g : a.delete(e);
+    }
+  }
+  return c;
+}
+;var Jb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 P.prototype.add = function(a, b, c, d) {
   if (b && (a || 0 === a)) {
     if (!d && !c && this.reg.has(a)) {
@@ -2756,17 +2804,17 @@ P.prototype.add = function(a, b, c, d) {
     }
     b = this.encoder.encode(b);
     if (d = b.length) {
-      for (var e = J(), g = J(), f = this.depth, h = this.resolution, k = 0; k < d; k++) {
+      for (var e = I(), g = I(), f = this.depth, h = this.resolution, k = 0; k < d; k++) {
         var l = b[this.rtl ? d - 1 - k : k], m = l.length;
         if (m && (f || !g[l])) {
-          var n = this.score ? this.score(b, l, k, null, 0) : Ib(h, d, k), p = "";
+          var n = this.score ? this.score(b, l, k, null, 0) : Kb(h, d, k), p = "";
           switch(this.tokenize) {
             case "full":
               if (2 < m) {
                 n = 0;
                 for (var q; n < m; n++) {
                   for (var t = m; t > n; t--) {
-                    p = l.substring(n, t), q = this.rtl ? m - 1 - n : n, q = this.score ? this.score(b, l, k, p, q) : Ib(h, d, k, m, q), Jb(this, g, p, q, a, c);
+                    p = l.substring(n, t), q = this.rtl ? m - 1 - n : n, q = this.score ? this.score(b, l, k, p, q) : Kb(h, d, k, m, q), Lb(this, g, p, q, a, c);
                   }
                 }
                 break;
@@ -2775,24 +2823,24 @@ P.prototype.add = function(a, b, c, d) {
             case "reverse":
               if (1 < m) {
                 for (t = m - 1; 0 < t; t--) {
-                  p = l[this.rtl ? m - 1 - t : t] + p, q = this.score ? this.score(b, l, k, p, t) : Ib(h, d, k, m, t), Jb(this, g, p, q, a, c);
+                  p = l[this.rtl ? m - 1 - t : t] + p, q = this.score ? this.score(b, l, k, p, t) : Kb(h, d, k, m, t), Lb(this, g, p, q, a, c);
                 }
                 p = "";
               }
             case "forward":
               if (1 < m) {
                 for (t = 0; t < m; t++) {
-                  p += l[this.rtl ? m - 1 - t : t], Jb(this, g, p, n, a, c);
+                  p += l[this.rtl ? m - 1 - t : t], Lb(this, g, p, n, a, c);
                 }
                 break;
               }
             default:
-              if (Jb(this, g, l, n, a, c), f && 1 < d && k < d - 1) {
-                for (m = J(), p = this.da, n = l, t = Math.min(f + 1, this.rtl ? k + 1 : d - k), q = m[n] = 1; q < t; q++) {
+              if (Lb(this, g, l, n, a, c), f && 1 < d && k < d - 1) {
+                for (m = I(), p = this.da, n = l, t = Math.min(f + 1, this.rtl ? k + 1 : d - k), q = m[n] = 1; q < t; q++) {
                   if ((l = b[this.rtl ? d - 1 - k - q : k + q]) && !m[l]) {
                     m[l] = 1;
-                    var w = this.score ? this.score(b, n, k, l, q - 1) : Ib(p + (d / 2 > p ? 0 : 1), d, k, t - 1, q - 1), r = this.bidirectional && l > n;
-                    Jb(this, e, r ? n : l, w, a, c, r ? l : n);
+                    var w = this.score ? this.score(b, n, k, l, q - 1) : Kb(p + (d / 2 > p ? 0 : 1), d, k, t - 1, q - 1), r = this.bidirectional && l > n;
+                    Lb(this, e, r ? n : l, w, a, c, r ? l : n);
                   }
                 }
               }
@@ -2804,17 +2852,17 @@ P.prototype.add = function(a, b, c, d) {
       b = "";
     }
   }
-  this.db && (b || this.commit_task.push({del:a}), this.ca && Kb(this));
+  this.db && (b || this.commit_task.push({del:a}), this.ca && Ib(this));
   return this;
 };
-function Jb(a, b, c, d, e, g, f) {
+function Lb(a, b, c, d, e, g, f) {
   var h = f ? a.ctx : a.map, k;
   if (!b[c] || f && !(k = b[c])[f]) {
-    if (f ? (b = k || (b[c] = J()), b[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : b[c] = 1, (k = h.get(c)) ? h = k : h.set(c, h = k = []), h = h[d] || (h[d] = []), !g || !h.includes(e)) {
+    if (f ? (b = k || (b[c] = I()), b[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : b[c] = 1, (k = h.get(c)) ? h = k : h.set(c, h = k = []), h = h[d] || (h[d] = []), !g || !h.includes(e)) {
       if (h.length === Math.pow(2, 31) - 1) {
         b = new T(h);
         if (a.fastupdate) {
-          for (c = x(a.reg.values()), g = c.next(); !g.done; g = c.next()) {
+          for (c = y(a.reg.values()), g = c.next(); !g.done; g = c.next()) {
             g = g.value, g.includes(h) && (g[g.indexOf(h)] = b);
           }
         }
@@ -2825,11 +2873,11 @@ function Jb(a, b, c, d, e, g, f) {
     }
   }
 }
-function Ib(a, b, c, d, e) {
+function Kb(a, b, c, d, e) {
   return c && 1 < a ? b + (d || 0) <= a ? c + (e || 0) : (a - 1) / (b + (d || 0)) * (c + (e || 0)) + 1 | 0 : 0;
 }
 ;P.prototype.search = function(a, b, c) {
-  c || (!b && L(a) ? (c = a, a = "") : L(b) && (c = b, b = 0));
+  c || (!b && K(a) ? (c = a, a = "") : K(b) && (c = b, b = 0));
   var d = [], e = 0, g;
   if (c) {
     a = c.query || a;
@@ -2848,13 +2896,13 @@ function Ib(a, b, c, d, e) {
   var q = p.length;
   b = b || (g ? 100 : 0);
   if (1 === q) {
-    return Lb.call(this, p[0], "", b, e, g, k, n);
+    return Mb.call(this, p[0], "", b, e, g, k, n);
   }
   f = this.depth && !1 !== f;
   if (2 === q && f && !h) {
-    return Lb.call(this, p[1], p[0], b, e, g, k, n);
+    return Mb.call(this, p[1], p[0], b, e, g, k, n);
   }
-  var t = J(), w = 0;
+  var t = I(), w = 0;
   if (1 < q && f) {
     var r = p[0];
     w = 1;
@@ -2864,40 +2912,40 @@ function Ib(a, b, c, d, e) {
     if (this.db.search && (a = this.db.search(this, p, b, e, h, g, k, n), !1 !== a)) {
       return a;
     }
-    var A = this;
+    var z = this;
     return function() {
-      var z, v;
-      return ta(function(y) {
-        switch(y.h) {
+      var A, v;
+      return ta(function(x) {
+        switch(x.h) {
           case 1:
-            v = z = void 0;
+            v = A = void 0;
           case 2:
             if (!(w < q)) {
-              y.h = 4;
+              x.h = 4;
               break;
             }
             v = p[w];
             if (!v || t[v]) {
-              y.h = 5;
+              x.h = 5;
               break;
             }
             t[v] = 1;
-            return E(y, Mb(A, v, r, 0, 0, !1, !1), 6);
+            return D(x, Nb(z, v, r, 0, 0, !1, !1), 6);
           case 6:
-            z = y.D;
-            if (z = Nb(z, d, h, m)) {
-              d = z;
-              y.h = 4;
+            A = x.D;
+            if (A = Ob(A, d, h, m)) {
+              d = A;
+              x.h = 4;
               break;
             }
-            r && (h && z && d.length || (r = v));
+            r && (h && A && d.length || (r = v));
           case 5:
-            h && r && w === q - 1 && !d.length && (m = A.resolution, r = "", w = -1, t = J());
+            h && r && w === q - 1 && !d.length && (m = z.resolution, r = "", w = -1, t = I());
             w++;
-            y.h = 2;
+            x.h = 2;
             break;
           case 4:
-            return y.return(Ob(d, m, b, e, h, l, g));
+            return x.return(Pb(d, m, b, e, h, l, g));
         }
       });
     }();
@@ -2905,18 +2953,18 @@ function Ib(a, b, c, d, e) {
   for (c = a = void 0; w < q; w++) {
     if ((c = p[w]) && !t[c]) {
       t[c] = 1;
-      a = Mb(this, c, r, 0, 0, !1, !1);
-      if (a = Nb(a, d, h, m)) {
+      a = Nb(this, c, r, 0, 0, !1, !1);
+      if (a = Ob(a, d, h, m)) {
         d = a;
         break;
       }
       r && (h && a && d.length || (r = c));
     }
-    h && r && w === q - 1 && !d.length && (m = this.resolution, r = "", w = -1, t = J());
+    h && r && w === q - 1 && !d.length && (m = this.resolution, r = "", w = -1, t = I());
   }
-  return Ob(d, m, b, e, h, l, g);
+  return Pb(d, m, b, e, h, l, g);
 };
-function Ob(a, b, c, d, e, g, f) {
+function Pb(a, b, c, d, e, g, f) {
   var h = a.length, k = a;
   if (1 < h) {
     k = ib(a, b, c, d, e, g, f);
@@ -2925,13 +2973,13 @@ function Ob(a, b, c, d, e, g, f) {
   }
   return f ? k : new Y(k);
 }
-function Lb(a, b, c, d, e, g, f) {
-  a = Mb(this, a, b, c, d, e, g, f);
+function Mb(a, b, c, d, e, g, f) {
+  a = Nb(this, a, b, c, d, e, g, f);
   return this.db ? a.then(function(h) {
     return e ? h || [] : new Y(h);
   }) : a && a.length ? e ? lb.call(this, a, c, d) : new Y(a) : e ? [] : new Y();
 }
-function Nb(a, b, c, d) {
+function Ob(a, b, c, d) {
   var e = [];
   if (a && a.length) {
     if (a.length <= d) {
@@ -2952,7 +3000,7 @@ function Nb(a, b, c, d) {
     return e;
   }
 }
-function Mb(a, b, c, d, e, g, f, h) {
+function Nb(a, b, c, d, e, g, f, h) {
   var k;
   c && (k = a.bidirectional && b > c) && (k = c, c = b, b = k);
   if (a.db) {
@@ -2961,61 +3009,18 @@ function Mb(a, b, c, d, e, g, f, h) {
   a = c ? (a = a.ctx.get(c)) && a.get(b) : a.map.get(b);
   return a;
 }
-;P.prototype.remove = function(a, b) {
-  var c = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (c) {
-    if (this.fastupdate) {
-      for (var d = 0, e; d < c.length; d++) {
-        if (e = c[d]) {
-          if (2 > e.length) {
-            e.pop();
-          } else {
-            var g = e.indexOf(a);
-            g === c.length - 1 ? e.pop() : e.splice(g, 1);
-          }
-        }
-      }
-    } else {
-      Pb(this.map, a), this.depth && Pb(this.ctx, a);
-    }
-    b || this.reg.delete(a);
-  }
-  this.db && (this.commit_task.push({del:a}), this.ca && Kb(this));
-  this.cache && this.cache.remove(a);
-  return this;
-};
-function Pb(a, b) {
-  var c = 0;
-  if (a.constructor === Array) {
-    for (var d = 0, e = void 0, g; d < a.length; d++) {
-      if ((e = a[d]) && e.length) {
-        if (g = e.indexOf(b), 0 <= g) {
-          1 < e.length ? (e.splice(g, 1), c++) : delete a[d];
-          break;
-        } else {
-          c++;
-        }
-      }
-    }
-  } else {
-    for (d = x(a.entries()), e = d.next(); !e.done; e = d.next()) {
-      g = e.value, e = g[0], (g = Pb(g[1], b)) ? c += g : a.delete(e);
-    }
-  }
-  return c;
-}
 ;function P(a, b) {
   if (!this || this.constructor !== P) {
     return new P(a);
   }
   if (a) {
-    var c = K(a) ? a : a.preset;
-    c && (Hb[c] || console.warn("Preset not found: " + c), a = Object.assign({}, Hb[c], a));
+    var c = J(a) ? a : a.preset;
+    c && (Jb[c] || console.warn("Preset not found: " + c), a = Object.assign({}, Jb[c], a));
   } else {
     a = {};
   }
   c = a.context;
-  var d = !0 === c ? {depth:1} : c || {}, e = K(a.encoder) ? Gb[a.encoder] : a.encode || a.encoder || {};
+  var d = !0 === c ? {depth:1} : c || {}, e = J(a.encoder) ? Gb[a.encoder] : a.encode || a.encoder || {};
   this.encoder = e.encode ? e : "object" === typeof e ? new Fa(e) : {encode:e};
   this.resolution = a.resolution || 9;
   this.tokenize = c = (c = a.tokenize) && "default" !== c && "exact" !== c && c || "strict";
@@ -3053,7 +3058,7 @@ u.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function Kb(a) {
+function Ib(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
@@ -3079,27 +3084,12 @@ u.update = function(a, b) {
     return c.add(a, b);
   }) : this.add(a, b);
 };
-function Qb(a) {
-  var b = 0;
-  if (a.constructor === Array) {
-    for (var c = 0, d = void 0; c < a.length; c++) {
-      (d = a[c]) && (b += d.length);
-    }
-  } else {
-    for (c = x(a.entries()), d = c.next(); !d.done; d = c.next()) {
-      var e = d.value;
-      d = e[0];
-      (e = Qb(e[1])) ? b += e : a.delete(d);
-    }
-  }
-  return b;
-}
 u.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  Qb(this.map);
-  this.depth && Qb(this.ctx);
+  Hb(this.map);
+  this.depth && Hb(this.ctx);
   return this;
 };
 u.searchCache = zb;
@@ -3148,14 +3138,14 @@ u.serialize = function(a) {
   var b = "", c = "", d = "";
   if (this.reg.size) {
     var e;
-    c = x(this.reg.keys());
+    c = y(this.reg.keys());
     for (var g = c.next(); !g.done; g = c.next()) {
       g = g.value, e || (e = typeof g), b += (b ? "," : "") + ("string" === e ? '"' + g + '"' : g);
     }
     b = "index.reg=new Set([" + b + "]);";
     c = $a(this.map, e);
     c = "index.map=new Map([" + c + "]);";
-    g = x(this.ctx.entries());
+    g = y(this.ctx.entries());
     for (var f = g.next(); !f.done; f = g.next()) {
       var h = f.value;
       f = h[0];
@@ -3169,11 +3159,11 @@ u.serialize = function(a) {
   return a ? "function inject(index){" + b + c + d + "}" : b + c + d;
 };
 Ia(P.prototype);
-var Rb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), Sb = ["map", "ctx", "tag", "reg", "cfg"], Tb = J();
-function Ub(a, b) {
+var Qb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), Rb = ["map", "ctx", "tag", "reg", "cfg"], Sb = I();
+function Tb(a, b) {
   b = void 0 === b ? {} : b;
   if (!this) {
-    return new Ub(a, b);
+    return new Tb(a, b);
   }
   "object" === typeof a && (b = a, a = a.name);
   a || console.info("Default storage space was used, because a name was not passed.");
@@ -3184,7 +3174,7 @@ function Ub(a, b) {
   this.db = null;
   this.h = {};
 }
-u = Ub.prototype;
+u = Tb.prototype;
 u.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
@@ -3198,14 +3188,14 @@ u.open = function() {
   }
   var a = this;
   navigator.storage && navigator.storage.persist();
-  Tb[a.id] || (Tb[a.id] = []);
-  Tb[a.id].push(a.field);
-  var b = Rb.open(a.id, 1);
+  Sb[a.id] || (Sb[a.id] = []);
+  Sb[a.id].push(a.field);
+  var b = Qb.open(a.id, 1);
   b.onupgradeneeded = function() {
-    for (var c = a.db = this.result, d = 0, e; d < Sb.length; d++) {
-      e = Sb[d];
-      for (var g = 0, f; g < Tb[a.id].length; g++) {
-        f = Tb[a.id][g], c.objectStoreNames.contains(e + ("reg" !== e ? f ? ":" + f : "" : "")) || c.createObjectStore(e + ("reg" !== e ? f ? ":" + f : "" : ""));
+    for (var c = a.db = this.result, d = 0, e; d < Rb.length; d++) {
+      e = Rb[d];
+      for (var g = 0, f; g < Sb[a.id].length; g++) {
+        f = Sb[a.id][g], c.objectStoreNames.contains(e + ("reg" !== e ? f ? ":" + f : "" : "")) || c.createObjectStore(e + ("reg" !== e ? f ? ":" + f : "" : ""));
       }
     }
   };
@@ -3221,14 +3211,14 @@ u.close = function() {
   this.db = null;
 };
 u.destroy = function() {
-  var a = Rb.deleteDatabase(this.id);
+  var a = Qb.deleteDatabase(this.id);
   return Z(a);
 };
 u.clear = function() {
-  for (var a = [], b = 0, c; b < Sb.length; b++) {
-    c = Sb[b];
-    for (var d = 0, e; d < Tb[this.id].length; d++) {
-      e = Tb[this.id][d], a.push(c + ("reg" !== c ? e ? ":" + e : "" : ""));
+  for (var a = [], b = 0, c; b < Rb.length; b++) {
+    c = Rb[b];
+    for (var d = 0, e; d < Sb[this.id].length; d++) {
+      e = Sb[this.id][d], a.push(c + ("reg" !== c ? e ? ":" + e : "" : ""));
     }
   }
   b = this.db.transaction(a, "readwrite");
@@ -3332,7 +3322,7 @@ u.commit = function(a, b, c) {
     switch(h.h) {
       case 1:
         if (b) {
-          return E(h, d.clear(), 12);
+          return D(h, d.clear(), 12);
         }
         e = a.commit_task;
         a.commit_task = [];
@@ -3349,7 +3339,7 @@ u.commit = function(a, b, c) {
           h.h = 5;
           break;
         }
-        return E(h, d.clear(), 8);
+        return D(h, d.clear(), 8);
       case 8:
         b = !0;
         h.h = 6;
@@ -3368,7 +3358,7 @@ u.commit = function(a, b, c) {
           h.h = 10;
           break;
         }
-        return E(h, d.remove(e), 11);
+        return D(h, d.remove(e), 11);
       case 11:
       case 10:
         h.h = 3;
@@ -3376,20 +3366,20 @@ u.commit = function(a, b, c) {
       case 12:
         a.commit_task = [];
       case 3:
-        return a.reg.size ? E(h, d.transaction("map", "readwrite", function(k) {
-          for (var l = x(a.map), m = l.next(), n = {}; !m.done; n = {O:void 0, Y:void 0}, m = l.next()) {
+        return a.reg.size ? D(h, d.transaction("map", "readwrite", function(k) {
+          for (var l = y(a.map), m = l.next(), n = {}; !m.done; n = {O:void 0, Y:void 0}, m = l.next()) {
             m = m.value, n.Y = m[0], n.O = m[1], n.O.length && (b ? k.put(n.O, n.Y) : k.get(n.Y).onsuccess = function(p) {
               return function() {
                 var q = this.result, t;
                 if (q && q.length) {
-                  for (var w = Math.max(q.length, p.O.length), r = 0, A; r < w; r++) {
-                    if ((A = p.O[r]) && A.length) {
+                  for (var w = Math.max(q.length, p.O.length), r = 0, z; r < w; r++) {
+                    if ((z = p.O[r]) && z.length) {
                       if ((t = q[r]) && t.length) {
-                        for (var z = 0; z < A.length; z++) {
-                          t.push(A[z]);
+                        for (var A = 0; A < z.length; A++) {
+                          t.push(z[A]);
                         }
                       } else {
-                        q[r] = A;
+                        q[r] = z;
                       }
                       t = 1;
                     }
@@ -3403,32 +3393,32 @@ u.commit = function(a, b, c) {
           }
         }), 13) : h.return();
       case 13:
-        return E(h, d.transaction("ctx", "readwrite", function(k) {
-          for (var l = x(a.ctx), m = l.next(), n = {}; !m.done; n = {V:void 0}, m = l.next()) {
+        return D(h, d.transaction("ctx", "readwrite", function(k) {
+          for (var l = y(a.ctx), m = l.next(), n = {}; !m.done; n = {V:void 0}, m = l.next()) {
             m = m.value;
             n.V = m[0];
-            m = x(m[1]);
+            m = y(m[1]);
             for (var p = m.next(), q = {}; !p.done; q = {P:void 0, Z:void 0}, p = m.next()) {
               p = p.value, q.Z = p[0], q.P = p[1], q.P.length && (b ? k.put(q.P, n.V + ":" + q.Z) : k.get(n.V + ":" + q.Z).onsuccess = function(t, w) {
                 return function() {
-                  var r = this.result, A;
+                  var r = this.result, z;
                   if (r && r.length) {
-                    for (var z = Math.max(r.length, t.P.length), v = 0, y; v < z; v++) {
-                      if ((y = t.P[v]) && y.length) {
-                        if ((A = r[v]) && A.length) {
-                          for (var D = 0; D < y.length; D++) {
-                            A.push(y[D]);
+                    for (var A = Math.max(r.length, t.P.length), v = 0, x; v < A; v++) {
+                      if ((x = t.P[v]) && x.length) {
+                        if ((z = r[v]) && z.length) {
+                          for (var E = 0; E < x.length; E++) {
+                            z.push(x[E]);
                           }
                         } else {
-                          r[v] = y;
+                          r[v] = x;
                         }
-                        A = 1;
+                        z = 1;
                       }
                     }
                   } else {
-                    r = t.P, A = 1;
+                    r = t.P, z = 1;
                   }
-                  A && k.put(r, w.V + ":" + t.Z);
+                  z && k.put(r, w.V + ":" + t.Z);
                 };
               }(q, n));
             }
@@ -3436,8 +3426,8 @@ u.commit = function(a, b, c) {
         }), 14);
       case 14:
         if (a.store) {
-          return E(h, d.transaction("reg", "readwrite", function(k) {
-            for (var l = x(a.store), m = l.next(); !m.done; m = l.next()) {
+          return D(h, d.transaction("reg", "readwrite", function(k) {
+            for (var l = y(a.store), m = l.next(); !m.done; m = l.next()) {
               var n = m.value;
               m = n[0];
               n = n[1];
@@ -3449,8 +3439,8 @@ u.commit = function(a, b, c) {
           h.h = 16;
           break;
         }
-        return E(h, d.transaction("reg", "readwrite", function(k) {
-          for (var l = x(a.reg.keys()), m = l.next(); !m.done; m = l.next()) {
+        return D(h, d.transaction("reg", "readwrite", function(k) {
+          for (var l = y(a.reg.keys()), m = l.next(); !m.done; m = l.next()) {
             k.put(1, m.value);
           }
         }), 16);
@@ -3459,8 +3449,8 @@ u.commit = function(a, b, c) {
           h.h = 20;
           break;
         }
-        return E(h, d.transaction("tag", "readwrite", function(k) {
-          for (var l = x(a.tag), m = l.next(), n = {}; !m.done; n = {X:void 0, ba:void 0}, m = l.next()) {
+        return D(h, d.transaction("tag", "readwrite", function(k) {
+          for (var l = y(a.tag), m = l.next(), n = {}; !m.done; n = {X:void 0, ba:void 0}, m = l.next()) {
             m = m.value, n.ba = m[0], n.X = m[1], n.X.length && (k.get(n.ba).onsuccess = function(p) {
               return function() {
                 var q = this.result;
@@ -3475,7 +3465,7 @@ u.commit = function(a, b, c) {
     }
   });
 };
-function Vb(a, b, c) {
+function Ub(a, b, c) {
   for (var d = a.value, e, g = 0, f = 0, h; f < d.length; f++) {
     if (h = c ? d : d[f]) {
       for (var k = 0, l; k < b.length; k++) {
@@ -3502,17 +3492,17 @@ u.remove = function(a) {
   return Promise.all([this.transaction("map", "readwrite", function(b) {
     b.openCursor().onsuccess = function() {
       var c = this.result;
-      c && Vb(c, a);
+      c && Ub(c, a);
     };
   }), this.transaction("ctx", "readwrite", function(b) {
     b.openCursor().onsuccess = function() {
       var c = this.result;
-      c && Vb(c, a);
+      c && Ub(c, a);
     };
   }), this.transaction("tag", "readwrite", function(b) {
     b.openCursor().onsuccess = function() {
       var c = this.result;
-      c && Vb(c, a, !0);
+      c && Ub(c, a, !0);
     };
   }), this.transaction("reg", "readwrite", function(b) {
     for (var c = 0; c < a.length; c++) {
@@ -3531,8 +3521,8 @@ function Z(a, b) {
     a = null;
   });
 }
-;var Wb = {Index:P, Charset:Gb, Encoder:Fa, Document:W, Worker:Ra, Resolver:Y, IndexedDB:Ub, Language:{}}, Xb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self, $b;
-($b = Xb.define) && $b.amd ? $b([], function() {
-  return Wb;
-}) : "object" === typeof Xb.exports ? Xb.exports = Wb : Xb.FlexSearch = Wb;
+;var Vb = {Index:P, Charset:Gb, Encoder:Fa, Document:W, Worker:Ra, Resolver:Y, IndexedDB:Tb, Language:{}}, Wb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self, Zb;
+(Zb = Wb.define) && Zb.amd ? Zb([], function() {
+  return Vb;
+}) : "object" === typeof Wb.exports ? Wb.exports = Vb : Wb.FlexSearch = Vb;
 }(this||self));
diff --git a/dist/flexsearch.es5.min.js b/dist/flexsearch.es5.min.js
index 812a25c..2a502b4 100644
--- a/dist/flexsearch.es5.min.js
+++ b/dist/flexsearch.es5.min.js
@@ -1,14 +1,14 @@
 /**!
- * FlexSearch.js v0.8.147 (ES5)
+ * FlexSearch.js v0.8.149 (ES5)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var u;function aa(a){var b=0;return function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}}}function x(a){var b="undefined"!=typeof Symbol&&Symbol.iterator&&a[Symbol.iterator];if(b)return b.call(a);if("number"==typeof a.length)return{next:aa(a)};throw Error(String(a)+" is not an iterable or ArrayLike");}var ba="function"==typeof Object.defineProperties?Object.defineProperty:function(a,b,c){if(a==Array.prototype||a==Object.prototype)return a;a[b]=c.value;return a};
+(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var u;function aa(a){var b=0;return function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}}}function y(a){var b="undefined"!=typeof Symbol&&Symbol.iterator&&a[Symbol.iterator];if(b)return b.call(a);if("number"==typeof a.length)return{next:aa(a)};throw Error(String(a)+" is not an iterable or ArrayLike");}var ba="function"==typeof Object.defineProperties?Object.defineProperty:function(a,b,c){if(a==Array.prototype||a==Object.prototype)return a;a[b]=c.value;return a};
 function ca(a){a=["object"==typeof globalThis&&globalThis,a,"object"==typeof window&&window,"object"==typeof self&&self,"object"==typeof global&&global];for(var b=0;b<a.length;++b){var c=a[b];if(c&&c.Math==Math)return c}throw Error("Cannot find global object");}var B=ca(this);function C(a,b){if(b)a:{var c=B;a=a.split(".");for(var d=0;d<a.length-1;d++){var e=a[d];if(!(e in c))break a;c=c[e]}a=a[a.length-1];d=c[a];b=b(d);b!=d&&null!=b&&ba(c,a,{configurable:!0,writable:!0,value:b})}}var da;
 if("function"==typeof Object.setPrototypeOf)da=Object.setPrototypeOf;else{var ea;a:{var fa={a:!0},ha={};try{ha.__proto__=fa;ea=ha.a;break a}catch(a){}ea=!1}da=ea?function(a,b){a.__proto__=b;if(a.__proto__!==b)throw new TypeError(a+" is not extensible");return a}:null}var ia=da;function ja(){this.C=!1;this.A=null;this.D=void 0;this.h=1;this.H=0;this.B=null}function ka(a){if(a.C)throw new TypeError("Generator is already running");a.C=!0}ja.prototype.G=function(a){this.D=a};
-function la(a,b){a.B={ka:b,la:!0};a.h=a.H}ja.prototype.return=function(a){this.B={return:a};this.h=this.H};function E(a,b,c){a.h=c;return{value:b}}function ma(a){this.h=new ja;this.A=a}function na(a,b){ka(a.h);var c=a.h.A;if(c)return oa(a,"return"in c?c["return"]:function(d){return{value:d,done:!0}},b,a.h.return);a.h.return(b);return pa(a)}
+function la(a,b){a.B={ka:b,la:!0};a.h=a.H}ja.prototype.return=function(a){this.B={return:a};this.h=this.H};function D(a,b,c){a.h=c;return{value:b}}function ma(a){this.h=new ja;this.A=a}function na(a,b){ka(a.h);var c=a.h.A;if(c)return oa(a,"return"in c?c["return"]:function(d){return{value:d,done:!0}},b,a.h.return);a.h.return(b);return pa(a)}
 function oa(a,b,c,d){try{var e=b.call(a.h.A,c);if(!(e instanceof Object))throw new TypeError("Iterator result "+e+" is not an object");if(!e.done)return a.h.C=!1,e;var g=e.value}catch(f){return a.h.A=null,la(a.h,f),pa(a)}a.h.A=null;d.call(a.h,g);return pa(a)}function pa(a){for(;a.h.h;)try{var b=a.A(a.h);if(b)return a.h.C=!1,{value:b.value,done:!1}}catch(c){a.h.D=void 0,la(a.h,c)}a.h.C=!1;if(a.h.B){b=a.h.B;a.h.B=null;if(b.la)throw b.ka;return{value:b.return,done:!0}}return{value:void 0,done:!0}}
 function qa(a){this.next=function(b){ka(a.h);a.h.A?b=oa(a,a.h.A.next,b,a.h.G):(a.h.G(b),b=pa(a));return b};this.throw=function(b){ka(a.h);a.h.A?b=oa(a,a.h.A["throw"],b,a.h.G):(la(a.h,b),b=pa(a));return b};this.return=function(b){return na(a,b)};this[Symbol.iterator]=function(){return this}}function ra(a,b){b=new qa(new ma(b));ia&&a.prototype&&ia(b,a.prototype);return b}
 function sa(a){function b(d){return a.next(d)}function c(d){return a.throw(d)}return new Promise(function(d,e){function g(f){f.done?d(f.value):Promise.resolve(f.value).then(b,c).then(g,e)}g(a.next())})}function ta(a){return sa(new qa(new ma(a)))}
@@ -18,117 +18,116 @@ C("Promise",function(a){function b(f){this.A=0;this.B=void 0;this.h=[];this.H=!1
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+var g=new c;b.prototype.ha=function(f){var h=this.C();f.U(h.resolve,h.reject)};b.prototype.ia=function(f,h){var k=this.C();try{f.call(h,k.resolve,k.reject)}catch(l){k.reject(l)}};b.prototype.then=function(f,h){function k(p,q){return"function"==typeof p?function(t){try{l(p(t))}catch(w){m(w)}}:q}var l,m,n=new b(function(p,q){l=p;m=q});this.U(k(f,l),k(h,m));return n};b.prototype.catch=function(f){return this.then(void 0,f)};b.prototype.U=function(f,h){function k(){switch(l.A){case 1:f(l.B);break;case 2:h(l.B);
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+C("WeakMap",function(a){function b(k){this.h=(h+=Math.random()+1).toString();if(k){k=y(k);for(var l;!(l=k.next()).done;)l=l.value,this.set(l[0],l[1])}}function c(){}function d(k){var l=typeof k;return"object"===l&&null!==k||"function"===l}function e(k){if(!F(k,f)){var l=new c;ba(k,f,{value:l})}}function g(k){var l=Object[k];l&&(Object[k]=function(m){if(m instanceof c)return m;Object.isExtensible(m)&&e(m);return l(m)})}if(function(){if(!a||!Object.seal)return!1;try{var k=Object.seal({}),l=Object.seal({}),
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-u.close=function(){this.db&&this.db.close();this.db=null};u.destroy=function(){var a=Rb.deleteDatabase(this.id);return Z(a)};u.clear=function(){for(var a=[],b=0,c;b<Sb.length;b++){c=Sb[b];for(var d=0,e;d<Tb[this.id].length;d++)e=Tb[this.id][d],a.push(c+("reg"!==c?e?":"+e:"":""))}b=this.db.transaction(a,"readwrite");for(c=0;c<a.length;c++)b.objectStore(a[c]).clear();return Z(b)};
+u.serialize=function(a){a=void 0===a?!0:a;var b="",c="",d="";if(this.reg.size){var e;c=y(this.reg.keys());for(var g=c.next();!g.done;g=c.next())g=g.value,e||(e=typeof g),b+=(b?",":"")+("string"===e?'"'+g+'"':g);b="index.reg=new Set(["+b+"]);";c=ab(this.map,e);c="index.map=new Map(["+c+"]);";g=y(this.ctx.entries());for(var f=g.next();!f.done;f=g.next()){var h=f.value;f=h[0];h=ab(h[1],e);h="new Map(["+h+"])";h='["'+f+'",'+h+"]";d+=(d?",":"")+h}d="index.ctx=new Map(["+d+"]);"}return a?"function inject(index){"+
+b+c+d+"}":b+c+d};Ja(O.prototype);var Qb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),Rb=["map","ctx","tag","reg","cfg"],Sb=I();
+function Tb(a,b){b=void 0===b?{}:b;if(!this)return new Tb(a,b);"object"===typeof a&&(b=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=b.field?b.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=b.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}u=Tb.prototype;u.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+u.open=function(){if(this.db)return this.db;var a=this;navigator.storage&&navigator.storage.persist();Sb[a.id]||(Sb[a.id]=[]);Sb[a.id].push(a.field);var b=Qb.open(a.id,1);b.onupgradeneeded=function(){for(var c=a.db=this.result,d=0,e;d<Rb.length;d++){e=Rb[d];for(var g=0,f;g<Sb[a.id].length;g++)f=Sb[a.id][g],c.objectStoreNames.contains(e+("reg"!==e?f?":"+f:"":""))||c.createObjectStore(e+("reg"!==e?f?":"+f:"":""))}};return a.db=Z(b,function(c){a.db=c;a.db.onversionchange=function(){a.close()}})};
+u.close=function(){this.db&&this.db.close();this.db=null};u.destroy=function(){var a=Qb.deleteDatabase(this.id);return Z(a)};u.clear=function(){for(var a=[],b=0,c;b<Rb.length;b++){c=Rb[b];for(var d=0,e;d<Sb[this.id].length;d++)e=Sb[this.id][d],a.push(c+("reg"!==c?e?":"+e:"":""))}b=this.db.transaction(a,"readwrite");for(c=0;c<a.length;c++)b.objectStore(a[c]).clear();return Z(b)};
 u.get=function(a,b,c,d,e,g){c=void 0===c?0:c;d=void 0===d?0:d;e=void 0===e?!0:e;g=void 0===g?!1:g;a=this.db.transaction((b?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((b?"ctx":"map")+(this.field?":"+this.field:"")).get(b?b+":"+a:a);var f=this;return Z(a).then(function(h){var k=[];if(!h||!h.length)return k;if(e){if(!c&&!d&&1===h.length)return h[0];for(var l=0,m=void 0;l<h.length;l++)if((m=h[l])&&m.length)if(d>=m.length)d-=m.length;else{for(var n=c?d+Math.min(m.length-d,c):m.length,
 p=d;p<n;p++)k.push(m[p]);d=0;if(k.length===c)break}return g?f.enrich(k):k}return h})};u.tag=function(a,b,c,d){b=void 0===b?0:b;c=void 0===c?0:c;d=void 0===d?!1:d;a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);var e=this;return Z(a).then(function(g){if(!g||!g.length||c>=g.length)return[];if(!b&&!c)return g;g=g.slice(c,c+b);return d?e.enrich(g):g})};
 u.enrich=function(a){"object"!==typeof a&&(a=[a]);for(var b=this.db.transaction("reg","readonly").objectStore("reg"),c=[],d=0;d<a.length;d++)c[d]=Z(b.get(a[d]));return Promise.all(c).then(function(e){for(var g=0;g<e.length;g++)e[g]={id:a[g],doc:e[g]?JSON.parse(e[g]):null};return e})};u.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(b){return!!b})};u.search=null;u.info=function(){};
 u.transaction=function(a,b,c){a+="reg"!==a?this.field?":"+this.field:"":"";var d=this.h[a+":"+b];if(d)return c.call(this,d);var e=this.db.transaction(a,b);this.h[a+":"+b]=d=e.objectStore(a);var g=c.call(this,d);this.h[a+":"+b]=null;return Z(e).finally(function(){e=d=null;return g})};
-u.commit=function(a,b,c){var d=this,e,g,f;return ta(function(h){switch(h.h){case 1:if(b)return E(h,d.clear(),12);e=a.commit_task;a.commit_task=[];g=0;f=void 0;case 4:if(!(g<e.length)){h.h=6;break}f=e[g];if(!f.clear){e[g]=f.del;h.h=5;break}return E(h,d.clear(),8);case 8:b=!0;h.h=6;break;case 5:g++;h.h=4;break;case 6:if(b){h.h=3;break}c||(e=e.concat(xa(a.reg)));if(!e.length){h.h=10;break}return E(h,d.remove(e),11);case 11:case 10:h.h=3;break;case 12:a.commit_task=[];case 3:return a.reg.size?E(h,d.transaction("map",
-"readwrite",function(k){for(var l=x(a.map),m=l.next(),n={};!m.done;n={O:void 0,Y:void 0},m=l.next())m=m.value,n.Y=m[0],n.O=m[1],n.O.length&&(b?k.put(n.O,n.Y):k.get(n.Y).onsuccess=function(p){return function(){var q=this.result,r;if(q&&q.length)for(var w=Math.max(q.length,p.O.length),t=0,A;t<w;t++){if((A=p.O[t])&&A.length){if((r=q[t])&&r.length)for(var z=0;z<A.length;z++)r.push(A[z]);else q[t]=A;r=1}}else q=p.O,r=1;r&&k.put(q,p.Y)}}(n))}),13):h.return();case 13:return E(h,d.transaction("ctx","readwrite",
-function(k){for(var l=x(a.ctx),m=l.next(),n={};!m.done;n={V:void 0},m=l.next()){m=m.value;n.V=m[0];m=x(m[1]);for(var p=m.next(),q={};!p.done;q={P:void 0,Z:void 0},p=m.next())p=p.value,q.Z=p[0],q.P=p[1],q.P.length&&(b?k.put(q.P,n.V+":"+q.Z):k.get(n.V+":"+q.Z).onsuccess=function(r,w){return function(){var t=this.result,A;if(t&&t.length)for(var z=Math.max(t.length,r.P.length),v=0,y;v<z;v++){if((y=r.P[v])&&y.length){if((A=t[v])&&A.length)for(var D=0;D<y.length;D++)A.push(y[D]);else t[v]=y;A=1}}else t=
-r.P,A=1;A&&k.put(t,w.V+":"+r.Z)}}(q,n))}}),14);case 14:if(a.store)return E(h,d.transaction("reg","readwrite",function(k){for(var l=x(a.store),m=l.next();!m.done;m=l.next()){var n=m.value;m=n[0];n=n[1];k.put("object"===typeof n?JSON.stringify(n):1,m)}}),16);if(a.bypass){h.h=16;break}return E(h,d.transaction("reg","readwrite",function(k){for(var l=x(a.reg.keys()),m=l.next();!m.done;m=l.next())k.put(1,m.value)}),16);case 16:if(!a.tag){h.h=20;break}return E(h,d.transaction("tag","readwrite",function(k){for(var l=
-x(a.tag),m=l.next(),n={};!m.done;n={X:void 0,ba:void 0},m=l.next())m=m.value,n.ba=m[0],n.X=m[1],n.X.length&&(k.get(n.ba).onsuccess=function(p){return function(){var q=this.result;q=q&&q.length?q.concat(p.X):p.X;k.put(q,p.ba)}}(n))}),20);case 20:a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear(),h.h=0}})};
-function Vb(a,b,c){for(var d=a.value,e,g=0,f=0,h;f<d.length;f++){if(h=c?d:d[f]){for(var k=0,l;k<b.length;k++)if(l=b[k],l=h.indexOf(l),0<=l)if(e=1,1<h.length)h.splice(l,1);else{d[f]=[];break}g+=h.length}if(c)break}g?e&&a.update(d):a.delete();a.continue()}
-u.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Vb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Vb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Vb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(var c=0;c<a.length;c++)b.delete(a[c])})])};
-function Z(a,b){return new Promise(function(c,d){a.onsuccess=a.oncomplete=function(){b&&b(this.result);b=null;c(this.result)};a.onerror=a.onblocked=d;a=null})};var Wb={Index:O,Charset:Gb,Encoder:Fa,Document:V,Worker:Sa,Resolver:X,IndexedDB:Ub,Language:{}},Zb="undefined"!==typeof self?self:"undefined"!==typeof global?global:self,$b;($b=Zb.define)&&$b.amd?$b([],function(){return Wb}):"object"===typeof Zb.exports?Zb.exports=Wb:Zb.FlexSearch=Wb;}(this||self));
+u.commit=function(a,b,c){var d=this,e,g,f;return ta(function(h){switch(h.h){case 1:if(b)return D(h,d.clear(),12);e=a.commit_task;a.commit_task=[];g=0;f=void 0;case 4:if(!(g<e.length)){h.h=6;break}f=e[g];if(!f.clear){e[g]=f.del;h.h=5;break}return D(h,d.clear(),8);case 8:b=!0;h.h=6;break;case 5:g++;h.h=4;break;case 6:if(b){h.h=3;break}c||(e=e.concat(xa(a.reg)));if(!e.length){h.h=10;break}return D(h,d.remove(e),11);case 11:case 10:h.h=3;break;case 12:a.commit_task=[];case 3:return a.reg.size?D(h,d.transaction("map",
+"readwrite",function(k){for(var l=y(a.map),m=l.next(),n={};!m.done;n={O:void 0,Y:void 0},m=l.next())m=m.value,n.Y=m[0],n.O=m[1],n.O.length&&(b?k.put(n.O,n.Y):k.get(n.Y).onsuccess=function(p){return function(){var q=this.result,t;if(q&&q.length)for(var w=Math.max(q.length,p.O.length),r=0,z;r<w;r++){if((z=p.O[r])&&z.length){if((t=q[r])&&t.length)for(var A=0;A<z.length;A++)t.push(z[A]);else q[r]=z;t=1}}else q=p.O,t=1;t&&k.put(q,p.Y)}}(n))}),13):h.return();case 13:return D(h,d.transaction("ctx","readwrite",
+function(k){for(var l=y(a.ctx),m=l.next(),n={};!m.done;n={V:void 0},m=l.next()){m=m.value;n.V=m[0];m=y(m[1]);for(var p=m.next(),q={};!p.done;q={P:void 0,Z:void 0},p=m.next())p=p.value,q.Z=p[0],q.P=p[1],q.P.length&&(b?k.put(q.P,n.V+":"+q.Z):k.get(n.V+":"+q.Z).onsuccess=function(t,w){return function(){var r=this.result,z;if(r&&r.length)for(var A=Math.max(r.length,t.P.length),v=0,x;v<A;v++){if((x=t.P[v])&&x.length){if((z=r[v])&&z.length)for(var E=0;E<x.length;E++)z.push(x[E]);else r[v]=x;z=1}}else r=
+t.P,z=1;z&&k.put(r,w.V+":"+t.Z)}}(q,n))}}),14);case 14:if(a.store)return D(h,d.transaction("reg","readwrite",function(k){for(var l=y(a.store),m=l.next();!m.done;m=l.next()){var n=m.value;m=n[0];n=n[1];k.put("object"===typeof n?JSON.stringify(n):1,m)}}),16);if(a.bypass){h.h=16;break}return D(h,d.transaction("reg","readwrite",function(k){for(var l=y(a.reg.keys()),m=l.next();!m.done;m=l.next())k.put(1,m.value)}),16);case 16:if(!a.tag){h.h=20;break}return D(h,d.transaction("tag","readwrite",function(k){for(var l=
+y(a.tag),m=l.next(),n={};!m.done;n={X:void 0,ba:void 0},m=l.next())m=m.value,n.ba=m[0],n.X=m[1],n.X.length&&(k.get(n.ba).onsuccess=function(p){return function(){var q=this.result;q=q&&q.length?q.concat(p.X):p.X;k.put(q,p.ba)}}(n))}),20);case 20:a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear(),h.h=0}})};
+function Ub(a,b,c){for(var d=a.value,e,g=0,f=0,h;f<d.length;f++){if(h=c?d:d[f]){for(var k=0,l;k<b.length;k++)if(l=b[k],l=h.indexOf(l),0<=l)if(e=1,1<h.length)h.splice(l,1);else{d[f]=[];break}g+=h.length}if(c)break}g?e&&a.update(d):a.delete();a.continue()}
+u.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Ub(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Ub(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Ub(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(var c=0;c<a.length;c++)b.delete(a[c])})])};
+function Z(a,b){return new Promise(function(c,d){a.onsuccess=a.oncomplete=function(){b&&b(this.result);b=null;c(this.result)};a.onerror=a.onblocked=d;a=null})};var Vb={Index:O,Charset:Gb,Encoder:Fa,Document:V,Worker:Sa,Resolver:X,IndexedDB:Tb,Language:{}},Yb="undefined"!==typeof self?self:"undefined"!==typeof global?global:self,Zb;(Zb=Yb.define)&&Zb.amd?Zb([],function(){return Vb}):"object"===typeof Yb.exports?Yb.exports=Vb:Yb.FlexSearch=Vb;}(this||self));
diff --git a/dist/flexsearch.light.debug.js b/dist/flexsearch.light.debug.js
index 094af2e..236933d 100644
--- a/dist/flexsearch.light.debug.js
+++ b/dist/flexsearch.light.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.147 (Light/Debug)
+ * FlexSearch.js v0.8.149 (Light/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -47,7 +47,7 @@ function u(a, d, b) {
 function w() {
   return Object.create(null);
 }
-;const y = /[^\p{L}\p{N}]+/u, z = /(\d{3})/g, B = /(\D)(\d{3})/g, D = /(\d{3})(\D)/g, E = /[\u0300-\u036f]/g;
+;const z = /[^\p{L}\p{N}]+/u, A = /(\d{3})/g, B = /(\D)(\d{3})/g, C = /(\d{3})(\D)/g, E = /[\u0300-\u036f]/g;
 function F(a = {}) {
   if (!this || this.constructor !== F) {
     return new F(...arguments);
@@ -88,7 +88,7 @@ r.assign = function(a) {
     this.numeric = u(a.numeric, f);
   } else {
     try {
-      this.split = u(this.split, y);
+      this.split = u(this.split, z);
     } catch (c) {
       console.warn("This platform does not support unicode regex. It falls back to using simple whitespace splitter instead: /s+/."), this.split = /\s+/;
     }
@@ -185,7 +185,7 @@ r.encode = function(a) {
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = E ? a.normalize("NFKD").replace(E, "").toLowerCase() : a.toLowerCase());
   this.prepare && (a = this.prepare(a));
-  this.numeric && 3 < a.length && (a = a.replace(B, "$1 $2").replace(D, "$1 $2").replace(z, "$1 "));
+  this.numeric && 3 < a.length && (a = a.replace(B, "$1 $2").replace(C, "$1 $2").replace(A, "$1 "));
   const d = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer);
   let b = [], f = this.split || "" === this.split ? a.split(this.split) : a;
   for (let g = 0, e, h; g < f.length; g++) {
@@ -265,20 +265,68 @@ function G(a) {
   return f = 1 < f.length ? [].concat.apply([], f) : f[0];
 }
 ;w();
-const I = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
-J.prototype.add = function(a, d, b, f) {
+I.prototype.remove = function(a, d) {
+  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (b) {
+    if (this.fastupdate) {
+      for (let f = 0, c; f < b.length; f++) {
+        if (c = b[f]) {
+          if (2 > c.length) {
+            c.pop();
+          } else {
+            const g = c.indexOf(a);
+            g === b.length - 1 ? c.pop() : c.splice(g, 1);
+          }
+        }
+      }
+    } else {
+      J(this.map, a), this.depth && J(this.ctx, a);
+    }
+    d || this.reg.delete(a);
+  }
+  return this;
+};
+function J(a, d) {
+  let b = 0;
+  var f = "undefined" === typeof d;
+  if (a.constructor === Array) {
+    for (let c = 0, g, e; c < a.length; c++) {
+      if ((g = a[c]) && g.length) {
+        if (f) {
+          b++;
+        } else {
+          if (e = g.indexOf(d), 0 <= e) {
+            1 < g.length ? (g.splice(e, 1), b++) : delete a[c];
+            break;
+          } else {
+            b++;
+          }
+        }
+      }
+    }
+  } else {
+    for (let c of a.entries()) {
+      f = c[0];
+      const g = J(c[1], d);
+      g ? b += g : a.delete(f);
+    }
+  }
+  return b;
+}
+;const K = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+I.prototype.add = function(a, d, b, f) {
   if (d && (a || 0 === a)) {
     if (!f && !b && this.reg.has(a)) {
       return this.update(a, d);
     }
     d = this.encoder.encode(d);
     if (f = d.length) {
-      const n = w(), m = w(), v = this.depth, C = this.resolution;
+      const n = w(), m = w(), v = this.depth, D = this.resolution;
       for (let p = 0; p < f; p++) {
         let l = d[this.rtl ? f - 1 - p : p];
         var c = l.length;
         if (c && (v || !m[l])) {
-          var g = this.score ? this.score(d, l, p, null, 0) : K(C, f, p), e = "";
+          var g = this.score ? this.score(d, l, p, null, 0) : L(D, f, p), e = "";
           switch(this.tokenize) {
             case "full":
               if (2 < c) {
@@ -286,8 +334,8 @@ J.prototype.add = function(a, d, b, f) {
                   for (g = c; g > q; g--) {
                     e = l.substring(q, g);
                     t = this.rtl ? c - 1 - q : q;
-                    var h = this.score ? this.score(d, l, p, e, t) : K(C, f, p, c, t);
-                    L(this, m, e, h, a, b);
+                    var h = this.score ? this.score(d, l, p, e, t) : L(D, f, p, c, t);
+                    M(this, m, e, h, a, b);
                   }
                 }
                 break;
@@ -297,25 +345,25 @@ J.prototype.add = function(a, d, b, f) {
               if (1 < c) {
                 for (h = c - 1; 0 < h; h--) {
                   e = l[this.rtl ? c - 1 - h : h] + e;
-                  var k = this.score ? this.score(d, l, p, e, h) : K(C, f, p, c, h);
-                  L(this, m, e, k, a, b);
+                  var k = this.score ? this.score(d, l, p, e, h) : L(D, f, p, c, h);
+                  M(this, m, e, k, a, b);
                 }
                 e = "";
               }
             case "forward":
               if (1 < c) {
                 for (h = 0; h < c; h++) {
-                  e += l[this.rtl ? c - 1 - h : h], L(this, m, e, g, a, b);
+                  e += l[this.rtl ? c - 1 - h : h], M(this, m, e, g, a, b);
                 }
                 break;
               }
             default:
-              if (L(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
+              if (M(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
                 for (c = w(), e = this.v, g = l, h = Math.min(v + 1, this.rtl ? p + 1 : f - p), c[g] = 1, k = 1; k < h; k++) {
                   if ((l = d[this.rtl ? f - 1 - p - k : p + k]) && !c[l]) {
                     c[l] = 1;
-                    const q = this.score ? this.score(d, g, p, l, k - 1) : K(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
-                    L(this, n, t ? g : l, q, a, b, t ? l : g);
+                    const q = this.score ? this.score(d, g, p, l, k - 1) : L(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
+                    M(this, n, t ? g : l, q, a, b, t ? l : g);
                   }
                 }
               }
@@ -327,16 +375,16 @@ J.prototype.add = function(a, d, b, f) {
   }
   return this;
 };
-function L(a, d, b, f, c, g, e) {
+function M(a, d, b, f, c, g, e) {
   let h = e ? a.ctx : a.map, k;
   if (!d[b] || e && !(k = d[b])[e]) {
     e ? (d = k || (d[b] = w()), d[e] = 1, (k = h.get(e)) ? h = k : h.set(e, h = new Map())) : d[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[f] || (h[f] = []), g && h.includes(c) || (h.push(c), a.fastupdate && ((d = a.reg.get(c)) ? d.push(h) : a.reg.set(c, [h])));
   }
 }
-function K(a, d, b, f, c) {
+function L(a, d, b, f, c) {
   return b && 1 < a ? d + (f || 0) <= a ? b + (c || 0) : (a - 1) / (d + (f || 0)) * (b + (c || 0)) + 1 | 0 : 0;
 }
-;J.prototype.search = function(a, d, b) {
+;I.prototype.search = function(a, d, b) {
   b || (d || "object" !== typeof a ? "object" === typeof d && (b = d, d = 0) : (b = a, a = ""));
   var f = [], c = 0;
   if (b) {
@@ -354,11 +402,11 @@ function K(a, d, b, f, c) {
   b = a.length;
   d = d || (h ? 100 : 0);
   if (1 === b) {
-    return e = c, (c = M(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = N(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
   }
   g = this.depth && !1 !== g;
   if (2 === b && g && !e) {
-    return e = c, (c = M(this, a[1], a[0])) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = N(this, a[1], a[0])) && c.length ? H.call(this, c, d, e) : [];
   }
   h = w();
   var n = 0;
@@ -370,10 +418,10 @@ function K(a, d, b, f, c) {
   for (let l, q; n < b; n++) {
     if ((q = a[n]) && !h[q]) {
       h[q] = 1;
-      l = M(this, q, m);
+      l = N(this, q, m);
       a: {
         g = l;
-        var v = f, C = e, p = k;
+        var v = f, D = e, p = k;
         let t = [];
         if (g && g.length) {
           if (g.length <= p) {
@@ -381,9 +429,9 @@ function K(a, d, b, f, c) {
             l = void 0;
             break a;
           }
-          for (let x = 0, A; x < p; x++) {
-            if (A = g[x]) {
-              t[x] = A;
+          for (let x = 0, y; x < p; x++) {
+            if (y = g[x]) {
+              t[x] = y;
             }
           }
           if (t.length) {
@@ -392,7 +440,7 @@ function K(a, d, b, f, c) {
             break a;
           }
         }
-        l = C ? void 0 : t;
+        l = D ? void 0 : t;
       }
       if (l) {
         f = l;
@@ -412,12 +460,12 @@ function K(a, d, b, f, c) {
         m = a.length;
         e = [];
         b = w();
-        for (let l = 0, q, t, x, A; l < k; l++) {
+        for (let l = 0, q, t, x, y; l < k; l++) {
           for (n = 0; n < m; n++) {
             if (x = a[n], l < x.length && (q = x[l])) {
               for (g = 0; g < q.length; g++) {
-                if (t = q[g], (h = b[t]) ? b[t]++ : (h = 0, b[t] = 1), A = e[h] || (e[h] = []), A.push(t), d && h === m - 1 && A.length - c === d) {
-                  m = A;
+                if (t = q[g], (h = b[t]) ? b[t]++ : (h = 0, b[t] = 1), y = e[h] || (e[h] = []), y.push(t), d && h === m - 1 && y.length - c === d) {
+                  m = c ? y.slice(c) : y;
                   break b;
                 }
               }
@@ -471,61 +519,19 @@ function K(a, d, b, f, c) {
   }
   return d;
 };
-function M(a, d, b) {
+function N(a, d, b) {
   let f;
   b && (f = a.bidirectional && d > b) && (f = b, b = d, d = f);
   a = b ? (a = a.ctx.get(b)) && a.get(d) : a.map.get(d);
   return a;
 }
-;J.prototype.remove = function(a, d) {
-  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (b) {
-    if (this.fastupdate) {
-      for (let f = 0, c; f < b.length; f++) {
-        if (c = b[f]) {
-          if (2 > c.length) {
-            c.pop();
-          } else {
-            const g = c.indexOf(a);
-            g === b.length - 1 ? c.pop() : c.splice(g, 1);
-          }
-        }
-      }
-    } else {
-      N(this.map, a), this.depth && N(this.ctx, a);
-    }
-    d || this.reg.delete(a);
-  }
-  return this;
-};
-function N(a, d) {
-  let b = 0;
-  if (a.constructor === Array) {
-    for (let f = 0, c, g; f < a.length; f++) {
-      if ((c = a[f]) && c.length) {
-        if (g = c.indexOf(d), 0 <= g) {
-          1 < c.length ? (c.splice(g, 1), b++) : delete a[f];
-          break;
-        } else {
-          b++;
-        }
-      }
-    }
-  } else {
-    for (let f of a.entries()) {
-      const c = f[0], g = N(f[1], d);
-      g ? b += g : a.delete(c);
-    }
-  }
-  return b;
-}
-;function J(a, d) {
-  if (!this || this.constructor !== J) {
-    return new J(a);
+;function I(a, d) {
+  if (!this || this.constructor !== I) {
+    return new I(a);
   }
   if (a) {
     var b = "string" === typeof a ? a : a.preset;
-    b && (I[b] || console.warn("Preset not found: " + b), a = Object.assign({}, I[b], a));
+    b && (K[b] || console.warn("Preset not found: " + b), a = Object.assign({}, K[b], a));
   } else {
     a = {};
   }
@@ -545,7 +551,7 @@ function N(a, d) {
   this.v = f.resolution || 3;
   this.rtl = c.rtl || a.rtl || !1;
 }
-r = J.prototype;
+r = I.prototype;
 r.clear = function() {
   this.map.clear();
   this.ctx.clear();
@@ -562,32 +568,18 @@ r.update = function(a, d) {
   const b = this, f = this.remove(a);
   return f && f.then ? f.then(() => b.add(a, d)) : this.add(a, d);
 };
-function O(a) {
-  let d = 0;
-  if (a.constructor === Array) {
-    for (let b = 0, f; b < a.length; b++) {
-      (f = a[b]) && (d += f.length);
-    }
-  } else {
-    for (const b of a.entries()) {
-      const f = b[0], c = O(b[1]);
-      c ? d += c : a.delete(f);
-    }
-  }
-  return d;
-}
 r.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  O(this.map);
-  this.depth && O(this.ctx);
+  J(this.map);
+  this.depth && J(this.ctx);
   return this;
 };
 w();
-const P = {Index:J, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, Q = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
-let R;
-(R = Q.define) && R.amd ? R([], function() {
-  return P;
-}) : "object" === typeof Q.exports ? Q.exports = P : Q.FlexSearch = P;
+const O = {Index:I, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, P = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
+let Q;
+(Q = P.define) && Q.amd ? Q([], function() {
+  return O;
+}) : "object" === typeof P.exports ? P.exports = O : P.FlexSearch = O;
 }(this||self));
diff --git a/dist/flexsearch.light.min.js b/dist/flexsearch.light.min.js
index fb81e3f..db03d27 100644
--- a/dist/flexsearch.light.min.js
+++ b/dist/flexsearch.light.min.js
@@ -1,26 +1,26 @@
 /**!
- * FlexSearch.js v0.8.147 (Light)
+ * FlexSearch.js v0.8.149 (Light)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-(function(self){'use strict';var r;function u(a,d,b){const f=typeof b,c=typeof a;if("undefined"!==f){if("undefined"!==c){if(b){if("function"===c&&f===c)return function(h){return a(b(h))};d=a.constructor;if(d===b.constructor){if(d===Array)return b.concat(a);if(d===Map){var g=new Map(b);for(var e of a)g.set(e[0],e[1]);return g}if(d===Set){e=new Set(b);for(g of a.values())e.add(g);return e}}}return a}return b}return"undefined"===c?d:a}function w(){return Object.create(null)};const y=/[^\p{L}\p{N}]+/u,z=/(\d{3})/g,B=/(\D)(\d{3})/g,D=/(\d{3})(\D)/g,E=/[\u0300-\u036f]/g;function F(a={}){if(!this||this.constructor!==F)return new F(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}r=F.prototype;
+(function(self){'use strict';var r;function u(a,d,b){const f=typeof b,c=typeof a;if("undefined"!==f){if("undefined"!==c){if(b){if("function"===c&&f===c)return function(h){return a(b(h))};d=a.constructor;if(d===b.constructor){if(d===Array)return b.concat(a);if(d===Map){var g=new Map(b);for(var e of a)g.set(e[0],e[1]);return g}if(d===Set){e=new Set(b);for(g of a.values())e.add(g);return e}}}return a}return b}return"undefined"===c?d:a}function w(){return Object.create(null)};const z=/[^\p{L}\p{N}]+/u,A=/(\d{3})/g,B=/(\D)(\d{3})/g,C=/(\d{3})(\D)/g,E=/[\u0300-\u036f]/g;function F(a={}){if(!this||this.constructor!==F)return new F(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}r=F.prototype;
 r.assign=function(a){this.normalize=u(a.normalize,!0,this.normalize);let d=a.include,b=d||a.exclude||a.split,f;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let c="";f=!d;d||(c+="\\p{Z}");b.letter&&(c+="\\p{L}");b.number&&(c+="\\p{N}",f=!!d);b.symbol&&(c+="\\p{S}");b.punctuation&&(c+="\\p{P}");b.control&&(c+="\\p{C}");if(b=b.char)c+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(d?"^":"")+c+"]+","u")}catch(g){this.split=/\s+/}}else this.split=b,f=!1===b||2>"a1a".split(b).length;
-this.numeric=u(a.numeric,f)}else{try{this.split=u(this.split,y)}catch(c){this.split=/\s+/}this.numeric=u(a.numeric,u(this.numeric,!0))}this.prepare=u(a.prepare,null,this.prepare);this.finalize=u(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:u(b&&new Set(b),null,this.filter);this.dedupe=u(a.dedupe,!1,this.dedupe);this.matcher=u((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=u((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=u((b=a.stemmer)&&new Map(b),
+this.numeric=u(a.numeric,f)}else{try{this.split=u(this.split,z)}catch(c){this.split=/\s+/}this.numeric=u(a.numeric,u(this.numeric,!0))}this.prepare=u(a.prepare,null,this.prepare);this.finalize=u(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:u(b&&new Set(b),null,this.filter);this.dedupe=u(a.dedupe,!1,this.dedupe);this.matcher=u((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=u((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=u((b=a.stemmer)&&new Map(b),
 null,this.stemmer);this.replacer=u(a.replacer,null,this.replacer);this.minlength=u(a.minlength,1,this.minlength);this.maxlength=u(a.maxlength,0,this.maxlength);this.rtl=u(a.rtl,!1,this.rtl);if(this.cache=b=u(a.cache,!0,this.cache))this.l=null,this.A="number"===typeof b?b:2E5,this.i=new Map,this.j=new Map,this.o=this.m=128;this.g="";this.s=null;this.h="";this.u=null;if(this.matcher)for(const c of this.matcher.keys())this.g+=(this.g?"|":"")+c;if(this.stemmer)for(const c of this.stemmer.keys())this.h+=
 (this.h?"|":"")+c;return this};r.addStemmer=function(a,d){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,d);this.h+=(this.h?"|":"")+a;this.u=null;this.cache&&G(this);return this};r.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&G(this);return this};
 r.addMapper=function(a,d){if("object"===typeof a)return this.addReplacer(a,d);if(1<a.length)return this.addMatcher(a,d);this.mapper||(this.mapper=new Map);this.mapper.set(a,d);this.cache&&G(this);return this};r.addMatcher=function(a,d){if("object"===typeof a)return this.addReplacer(a,d);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,d);this.matcher||(this.matcher=new Map);this.matcher.set(a,d);this.g+=(this.g?"|":"")+a;this.s=null;this.cache&&G(this);return this};
 r.addReplacer=function(a,d){if("string"===typeof a)return this.addMatcher(a,d);this.replacer||(this.replacer=[]);this.replacer.push(a,d);this.cache&&G(this);return this};
-r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.i.has(a))return this.i.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=E?a.normalize("NFKD").replace(E,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(B,"$1 $2").replace(D,"$1 $2").replace(z,"$1 "));const d=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],f=
+r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.i.has(a))return this.i.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=E?a.normalize("NFKD").replace(E,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(B,"$1 $2").replace(C,"$1 $2").replace(A,"$1 "));const d=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],f=
 this.split||""===this.split?a.split(this.split):a;for(let g=0,e,h;g<f.length;g++)if((e=h=f[g])&&!(e.length<this.minlength))if(d)b.push(e);else if(!this.filter||("function"===typeof this.filter?this.filter(e):!this.filter.has(e))){if(this.cache&&e.length<=this.o)if(this.l){var c=this.j.get(e);if(c||""===c){c&&b.push(c);continue}}else this.l=setTimeout(G,50,this);this.stemmer&&2<e.length&&(this.u||(this.u=new RegExp("(?!^)("+this.h+")$")),c=e,e=e.replace(this.u,k=>this.stemmer.get(k)),c!==e&&this.filter&&
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-function N(a,d){let b=0;if(a.constructor===Array)for(let f=0,c,g;f<a.length;f++){if((c=a[f])&&c.length)if(g=c.indexOf(d),0<=g){1<c.length?(c.splice(g,1),b++):delete a[f];break}else b++}else for(let f of a.entries()){const c=f[0],g=N(f[1],d);g?b+=g:a.delete(c)}return b};function J(a,d){if(!this||this.constructor!==J)return new J(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},I[b],a))}else a={};b=a.context;const f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||{};this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
-a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=J.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
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+this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();I.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else J(this.map,a),this.depth&&J(this.ctx,a);d||this.reg.delete(a)}return this};
+function J(a,d){let b=0;var f="undefined"===typeof d;if(a.constructor===Array)for(let c=0,g,e;c<a.length;c++){if((g=a[c])&&g.length)if(f)b++;else if(e=g.indexOf(d),0<=e){1<g.length?(g.splice(e,1),b++):delete a[c];break}else b++}else for(let c of a.entries()){f=c[0];const g=J(c[1],d);g?b+=g:a.delete(f)}return b};const K={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};I.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,D=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):L(D,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):L(D,f,p,c,t);M(this,
+m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):L(D,f,p,c,h);M(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],M(this,m,e,g,a,b);break}default:if(M(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):L(e+(f/2>e?0:1),f,p,h-1,k-1),
+t=this.bidirectional&&l>g;M(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function M(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function L(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};I.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=N(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=N(this,a[1],a[0]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
+0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=N(this,q,m);a:{g=l;var v=f,D=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,y;x<p;x++)if(y=g[x])t[x]=y;if(t.length){v.push(t);l=void 0;break a}}l=D?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,y;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
+x.length&&(q=x[l]))for(g=0;g<q.length;g++)if(t=q[g],(h=b[t])?b[t]++:(h=0,b[t]=1),y=e[h]||(e[h]=[]),y.push(t),d&&h===m-1&&y.length-c===d){m=c?y.slice(c):y;break b}if(a=e.length)if(f){if(1<e.length)c:for(a=[],k=w(),f=e.length,h=f-1;0<=h;h--){if(b=(f=e[h])&&f.length)for(n=0;n<b;n++)if(m=f[n],!k[m])if(k[m]=1,c)c--;else if(a.push(m),a.length===d)break c}else a=(e=e[0]).length>d||c?e.slice(c,d+c):e;e=a}else{if(a<m){m=[];break b}e=e[a-1];if(d||c)if(e.length>d||c)e=e.slice(c,d+c)}m=e}else if(1===f){d=H.call(null,
+a[0],d,c);break a}d=m}return d};function N(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};function I(a,d){if(!this||this.constructor!==I)return new I(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},K[b],a))}else a={};b=a.context;const f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||{};this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
+a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=I.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
+r.cleanup=function(){if(!this.fastupdate)return this;J(this.map);this.depth&&J(this.ctx);return this};w();const O={Index:I,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}},P="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let Q;(Q=P.define)&&Q.amd?Q([],function(){return O}):"object"===typeof P.exports?P.exports=O:P.FlexSearch=O;}(this||self));
diff --git a/dist/flexsearch.light.module.debug.js b/dist/flexsearch.light.module.debug.js
index 93e2141..8edd1eb 100644
--- a/dist/flexsearch.light.module.debug.js
+++ b/dist/flexsearch.light.module.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle/Debug)
+ * FlexSearch.js v0.8.149 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -46,7 +46,7 @@ function u(a, d, b) {
 function w() {
   return Object.create(null);
 }
-;const y = /[^\p{L}\p{N}]+/u, z = /(\d{3})/g, B = /(\D)(\d{3})/g, D = /(\d{3})(\D)/g, E = /[\u0300-\u036f]/g;
+;const z = /[^\p{L}\p{N}]+/u, A = /(\d{3})/g, B = /(\D)(\d{3})/g, C = /(\d{3})(\D)/g, E = /[\u0300-\u036f]/g;
 function F(a = {}) {
   if (!this || this.constructor !== F) {
     return new F(...arguments);
@@ -87,7 +87,7 @@ r.assign = function(a) {
     this.numeric = u(a.numeric, f);
   } else {
     try {
-      this.split = u(this.split, y);
+      this.split = u(this.split, z);
     } catch (c) {
       console.warn("This platform does not support unicode regex. It falls back to using simple whitespace splitter instead: /s+/."), this.split = /\s+/;
     }
@@ -184,7 +184,7 @@ r.encode = function(a) {
   }
   this.normalize && ("function" === typeof this.normalize ? a = this.normalize(a) : a = E ? a.normalize("NFKD").replace(E, "").toLowerCase() : a.toLowerCase());
   this.prepare && (a = this.prepare(a));
-  this.numeric && 3 < a.length && (a = a.replace(B, "$1 $2").replace(D, "$1 $2").replace(z, "$1 "));
+  this.numeric && 3 < a.length && (a = a.replace(B, "$1 $2").replace(C, "$1 $2").replace(A, "$1 "));
   const d = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer);
   let b = [], f = this.split || "" === this.split ? a.split(this.split) : a;
   for (let g = 0, e, h; g < f.length; g++) {
@@ -264,20 +264,68 @@ function G(a) {
   return f = 1 < f.length ? [].concat.apply([], f) : f[0];
 }
 ;w();
-const I = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
-J.prototype.add = function(a, d, b, f) {
+I.prototype.remove = function(a, d) {
+  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
+  if (b) {
+    if (this.fastupdate) {
+      for (let f = 0, c; f < b.length; f++) {
+        if (c = b[f]) {
+          if (2 > c.length) {
+            c.pop();
+          } else {
+            const g = c.indexOf(a);
+            g === b.length - 1 ? c.pop() : c.splice(g, 1);
+          }
+        }
+      }
+    } else {
+      J(this.map, a), this.depth && J(this.ctx, a);
+    }
+    d || this.reg.delete(a);
+  }
+  return this;
+};
+function J(a, d) {
+  let b = 0;
+  var f = "undefined" === typeof d;
+  if (a.constructor === Array) {
+    for (let c = 0, g, e; c < a.length; c++) {
+      if ((g = a[c]) && g.length) {
+        if (f) {
+          b++;
+        } else {
+          if (e = g.indexOf(d), 0 <= e) {
+            1 < g.length ? (g.splice(e, 1), b++) : delete a[c];
+            break;
+          } else {
+            b++;
+          }
+        }
+      }
+    }
+  } else {
+    for (let c of a.entries()) {
+      f = c[0];
+      const g = J(c[1], d);
+      g ? b += g : a.delete(f);
+    }
+  }
+  return b;
+}
+;const K = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+I.prototype.add = function(a, d, b, f) {
   if (d && (a || 0 === a)) {
     if (!f && !b && this.reg.has(a)) {
       return this.update(a, d);
     }
     d = this.encoder.encode(d);
     if (f = d.length) {
-      const n = w(), m = w(), v = this.depth, C = this.resolution;
+      const n = w(), m = w(), v = this.depth, D = this.resolution;
       for (let p = 0; p < f; p++) {
         let l = d[this.rtl ? f - 1 - p : p];
         var c = l.length;
         if (c && (v || !m[l])) {
-          var g = this.score ? this.score(d, l, p, null, 0) : K(C, f, p), e = "";
+          var g = this.score ? this.score(d, l, p, null, 0) : L(D, f, p), e = "";
           switch(this.tokenize) {
             case "full":
               if (2 < c) {
@@ -285,8 +333,8 @@ J.prototype.add = function(a, d, b, f) {
                   for (g = c; g > q; g--) {
                     e = l.substring(q, g);
                     t = this.rtl ? c - 1 - q : q;
-                    var h = this.score ? this.score(d, l, p, e, t) : K(C, f, p, c, t);
-                    L(this, m, e, h, a, b);
+                    var h = this.score ? this.score(d, l, p, e, t) : L(D, f, p, c, t);
+                    M(this, m, e, h, a, b);
                   }
                 }
                 break;
@@ -296,25 +344,25 @@ J.prototype.add = function(a, d, b, f) {
               if (1 < c) {
                 for (h = c - 1; 0 < h; h--) {
                   e = l[this.rtl ? c - 1 - h : h] + e;
-                  var k = this.score ? this.score(d, l, p, e, h) : K(C, f, p, c, h);
-                  L(this, m, e, k, a, b);
+                  var k = this.score ? this.score(d, l, p, e, h) : L(D, f, p, c, h);
+                  M(this, m, e, k, a, b);
                 }
                 e = "";
               }
             case "forward":
               if (1 < c) {
                 for (h = 0; h < c; h++) {
-                  e += l[this.rtl ? c - 1 - h : h], L(this, m, e, g, a, b);
+                  e += l[this.rtl ? c - 1 - h : h], M(this, m, e, g, a, b);
                 }
                 break;
               }
             default:
-              if (L(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
+              if (M(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
                 for (c = w(), e = this.v, g = l, h = Math.min(v + 1, this.rtl ? p + 1 : f - p), c[g] = 1, k = 1; k < h; k++) {
                   if ((l = d[this.rtl ? f - 1 - p - k : p + k]) && !c[l]) {
                     c[l] = 1;
-                    const q = this.score ? this.score(d, g, p, l, k - 1) : K(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
-                    L(this, n, t ? g : l, q, a, b, t ? l : g);
+                    const q = this.score ? this.score(d, g, p, l, k - 1) : L(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
+                    M(this, n, t ? g : l, q, a, b, t ? l : g);
                   }
                 }
               }
@@ -326,16 +374,16 @@ J.prototype.add = function(a, d, b, f) {
   }
   return this;
 };
-function L(a, d, b, f, c, g, e) {
+function M(a, d, b, f, c, g, e) {
   let h = e ? a.ctx : a.map, k;
   if (!d[b] || e && !(k = d[b])[e]) {
     e ? (d = k || (d[b] = w()), d[e] = 1, (k = h.get(e)) ? h = k : h.set(e, h = new Map())) : d[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[f] || (h[f] = []), g && h.includes(c) || (h.push(c), a.fastupdate && ((d = a.reg.get(c)) ? d.push(h) : a.reg.set(c, [h])));
   }
 }
-function K(a, d, b, f, c) {
+function L(a, d, b, f, c) {
   return b && 1 < a ? d + (f || 0) <= a ? b + (c || 0) : (a - 1) / (d + (f || 0)) * (b + (c || 0)) + 1 | 0 : 0;
 }
-;J.prototype.search = function(a, d, b) {
+;I.prototype.search = function(a, d, b) {
   b || (d || "object" !== typeof a ? "object" === typeof d && (b = d, d = 0) : (b = a, a = ""));
   var f = [], c = 0;
   if (b) {
@@ -353,11 +401,11 @@ function K(a, d, b, f, c) {
   b = a.length;
   d = d || (h ? 100 : 0);
   if (1 === b) {
-    return e = c, (c = M(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = N(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
   }
   g = this.depth && !1 !== g;
   if (2 === b && g && !e) {
-    return e = c, (c = M(this, a[1], a[0])) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = N(this, a[1], a[0])) && c.length ? H.call(this, c, d, e) : [];
   }
   h = w();
   var n = 0;
@@ -369,10 +417,10 @@ function K(a, d, b, f, c) {
   for (let l, q; n < b; n++) {
     if ((q = a[n]) && !h[q]) {
       h[q] = 1;
-      l = M(this, q, m);
+      l = N(this, q, m);
       a: {
         g = l;
-        var v = f, C = e, p = k;
+        var v = f, D = e, p = k;
         let t = [];
         if (g && g.length) {
           if (g.length <= p) {
@@ -380,9 +428,9 @@ function K(a, d, b, f, c) {
             l = void 0;
             break a;
           }
-          for (let x = 0, A; x < p; x++) {
-            if (A = g[x]) {
-              t[x] = A;
+          for (let x = 0, y; x < p; x++) {
+            if (y = g[x]) {
+              t[x] = y;
             }
           }
           if (t.length) {
@@ -391,7 +439,7 @@ function K(a, d, b, f, c) {
             break a;
           }
         }
-        l = C ? void 0 : t;
+        l = D ? void 0 : t;
       }
       if (l) {
         f = l;
@@ -411,12 +459,12 @@ function K(a, d, b, f, c) {
         m = a.length;
         e = [];
         b = w();
-        for (let l = 0, q, t, x, A; l < k; l++) {
+        for (let l = 0, q, t, x, y; l < k; l++) {
           for (n = 0; n < m; n++) {
             if (x = a[n], l < x.length && (q = x[l])) {
               for (g = 0; g < q.length; g++) {
-                if (t = q[g], (h = b[t]) ? b[t]++ : (h = 0, b[t] = 1), A = e[h] || (e[h] = []), A.push(t), d && h === m - 1 && A.length - c === d) {
-                  m = A;
+                if (t = q[g], (h = b[t]) ? b[t]++ : (h = 0, b[t] = 1), y = e[h] || (e[h] = []), y.push(t), d && h === m - 1 && y.length - c === d) {
+                  m = c ? y.slice(c) : y;
                   break b;
                 }
               }
@@ -470,61 +518,19 @@ function K(a, d, b, f, c) {
   }
   return d;
 };
-function M(a, d, b) {
+function N(a, d, b) {
   let f;
   b && (f = a.bidirectional && d > b) && (f = b, b = d, d = f);
   a = b ? (a = a.ctx.get(b)) && a.get(d) : a.map.get(d);
   return a;
 }
-;J.prototype.remove = function(a, d) {
-  const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
-  if (b) {
-    if (this.fastupdate) {
-      for (let f = 0, c; f < b.length; f++) {
-        if (c = b[f]) {
-          if (2 > c.length) {
-            c.pop();
-          } else {
-            const g = c.indexOf(a);
-            g === b.length - 1 ? c.pop() : c.splice(g, 1);
-          }
-        }
-      }
-    } else {
-      N(this.map, a), this.depth && N(this.ctx, a);
-    }
-    d || this.reg.delete(a);
-  }
-  return this;
-};
-function N(a, d) {
-  let b = 0;
-  if (a.constructor === Array) {
-    for (let f = 0, c, g; f < a.length; f++) {
-      if ((c = a[f]) && c.length) {
-        if (g = c.indexOf(d), 0 <= g) {
-          1 < c.length ? (c.splice(g, 1), b++) : delete a[f];
-          break;
-        } else {
-          b++;
-        }
-      }
-    }
-  } else {
-    for (let f of a.entries()) {
-      const c = f[0], g = N(f[1], d);
-      g ? b += g : a.delete(c);
-    }
-  }
-  return b;
-}
-;function J(a, d) {
-  if (!this || this.constructor !== J) {
-    return new J(a);
+;function I(a, d) {
+  if (!this || this.constructor !== I) {
+    return new I(a);
   }
   if (a) {
     var b = "string" === typeof a ? a : a.preset;
-    b && (I[b] || console.warn("Preset not found: " + b), a = Object.assign({}, I[b], a));
+    b && (K[b] || console.warn("Preset not found: " + b), a = Object.assign({}, K[b], a));
   } else {
     a = {};
   }
@@ -544,7 +550,7 @@ function N(a, d) {
   this.v = f.resolution || 3;
   this.rtl = c.rtl || a.rtl || !1;
 }
-r = J.prototype;
+r = I.prototype;
 r.clear = function() {
   this.map.clear();
   this.ctx.clear();
@@ -561,29 +567,15 @@ r.update = function(a, d) {
   const b = this, f = this.remove(a);
   return f && f.then ? f.then(() => b.add(a, d)) : this.add(a, d);
 };
-function O(a) {
-  let d = 0;
-  if (a.constructor === Array) {
-    for (let b = 0, f; b < a.length; b++) {
-      (f = a[b]) && (d += f.length);
-    }
-  } else {
-    for (const b of a.entries()) {
-      const f = b[0], c = O(b[1]);
-      c ? d += c : a.delete(f);
-    }
-  }
-  return d;
-}
 r.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  O(this.map);
-  this.depth && O(this.ctx);
+  J(this.map);
+  this.depth && J(this.ctx);
   return this;
 };
 w();
-export default {Index:J, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
+export default {Index:I, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
 
-export const Index=J;export const  Charset=null;export const  Encoder=F;export const  Document=null;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
+export const Index=I;export const  Charset=null;export const  Encoder=F;export const  Document=null;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.light.module.min.js b/dist/flexsearch.light.module.min.js
index cb0057a..0f08b6c 100644
--- a/dist/flexsearch.light.module.min.js
+++ b/dist/flexsearch.light.module.min.js
@@ -1,27 +1,27 @@
 /**!
- * FlexSearch.js v0.8.147 (Bundle)
+ * FlexSearch.js v0.8.149 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var r;function u(a,d,b){const f=typeof b,c=typeof a;if("undefined"!==f){if("undefined"!==c){if(b){if("function"===c&&f===c)return function(h){return a(b(h))};d=a.constructor;if(d===b.constructor){if(d===Array)return b.concat(a);if(d===Map){var g=new Map(b);for(var e of a)g.set(e[0],e[1]);return g}if(d===Set){e=new Set(b);for(g of a.values())e.add(g);return e}}}return a}return b}return"undefined"===c?d:a}function w(){return Object.create(null)};const y=/[^\p{L}\p{N}]+/u,z=/(\d{3})/g,B=/(\D)(\d{3})/g,D=/(\d{3})(\D)/g,E=/[\u0300-\u036f]/g;function F(a={}){if(!this||this.constructor!==F)return new F(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}r=F.prototype;
+var r;function u(a,d,b){const f=typeof b,c=typeof a;if("undefined"!==f){if("undefined"!==c){if(b){if("function"===c&&f===c)return function(h){return a(b(h))};d=a.constructor;if(d===b.constructor){if(d===Array)return b.concat(a);if(d===Map){var g=new Map(b);for(var e of a)g.set(e[0],e[1]);return g}if(d===Set){e=new Set(b);for(g of a.values())e.add(g);return e}}}return a}return b}return"undefined"===c?d:a}function w(){return Object.create(null)};const z=/[^\p{L}\p{N}]+/u,A=/(\d{3})/g,B=/(\D)(\d{3})/g,C=/(\d{3})(\D)/g,E=/[\u0300-\u036f]/g;function F(a={}){if(!this||this.constructor!==F)return new F(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}r=F.prototype;
 r.assign=function(a){this.normalize=u(a.normalize,!0,this.normalize);let d=a.include,b=d||a.exclude||a.split,f;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let c="";f=!d;d||(c+="\\p{Z}");b.letter&&(c+="\\p{L}");b.number&&(c+="\\p{N}",f=!!d);b.symbol&&(c+="\\p{S}");b.punctuation&&(c+="\\p{P}");b.control&&(c+="\\p{C}");if(b=b.char)c+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(d?"^":"")+c+"]+","u")}catch(g){this.split=/\s+/}}else this.split=b,f=!1===b||2>"a1a".split(b).length;
-this.numeric=u(a.numeric,f)}else{try{this.split=u(this.split,y)}catch(c){this.split=/\s+/}this.numeric=u(a.numeric,u(this.numeric,!0))}this.prepare=u(a.prepare,null,this.prepare);this.finalize=u(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:u(b&&new Set(b),null,this.filter);this.dedupe=u(a.dedupe,!1,this.dedupe);this.matcher=u((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=u((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=u((b=a.stemmer)&&new Map(b),
+this.numeric=u(a.numeric,f)}else{try{this.split=u(this.split,z)}catch(c){this.split=/\s+/}this.numeric=u(a.numeric,u(this.numeric,!0))}this.prepare=u(a.prepare,null,this.prepare);this.finalize=u(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:u(b&&new Set(b),null,this.filter);this.dedupe=u(a.dedupe,!1,this.dedupe);this.matcher=u((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=u((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=u((b=a.stemmer)&&new Map(b),
 null,this.stemmer);this.replacer=u(a.replacer,null,this.replacer);this.minlength=u(a.minlength,1,this.minlength);this.maxlength=u(a.maxlength,0,this.maxlength);this.rtl=u(a.rtl,!1,this.rtl);if(this.cache=b=u(a.cache,!0,this.cache))this.l=null,this.A="number"===typeof b?b:2E5,this.i=new Map,this.j=new Map,this.o=this.m=128;this.g="";this.s=null;this.h="";this.u=null;if(this.matcher)for(const c of this.matcher.keys())this.g+=(this.g?"|":"")+c;if(this.stemmer)for(const c of this.stemmer.keys())this.h+=
 (this.h?"|":"")+c;return this};r.addStemmer=function(a,d){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,d);this.h+=(this.h?"|":"")+a;this.u=null;this.cache&&G(this);return this};r.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&G(this);return this};
 r.addMapper=function(a,d){if("object"===typeof a)return this.addReplacer(a,d);if(1<a.length)return this.addMatcher(a,d);this.mapper||(this.mapper=new Map);this.mapper.set(a,d);this.cache&&G(this);return this};r.addMatcher=function(a,d){if("object"===typeof a)return this.addReplacer(a,d);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,d);this.matcher||(this.matcher=new Map);this.matcher.set(a,d);this.g+=(this.g?"|":"")+a;this.s=null;this.cache&&G(this);return this};
 r.addReplacer=function(a,d){if("string"===typeof a)return this.addMatcher(a,d);this.replacer||(this.replacer=[]);this.replacer.push(a,d);this.cache&&G(this);return this};
-r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.i.has(a))return this.i.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=E?a.normalize("NFKD").replace(E,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(B,"$1 $2").replace(D,"$1 $2").replace(z,"$1 "));const d=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],f=
+r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.i.has(a))return this.i.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=E?a.normalize("NFKD").replace(E,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(B,"$1 $2").replace(C,"$1 $2").replace(A,"$1 "));const d=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],f=
 this.split||""===this.split?a.split(this.split):a;for(let g=0,e,h;g<f.length;g++)if((e=h=f[g])&&!(e.length<this.minlength))if(d)b.push(e);else if(!this.filter||("function"===typeof this.filter?this.filter(e):!this.filter.has(e))){if(this.cache&&e.length<=this.o)if(this.l){var c=this.j.get(e);if(c||""===c){c&&b.push(c);continue}}else this.l=setTimeout(G,50,this);this.stemmer&&2<e.length&&(this.u||(this.u=new RegExp("(?!^)("+this.h+")$")),c=e,e=e.replace(this.u,k=>this.stemmer.get(k)),c!==e&&this.filter&&
 e.length>=this.minlength&&("function"===typeof this.filter?!this.filter(e):this.filter.has(e))&&(e=""));if(e&&(this.mapper||this.dedupe&&1<e.length)){c="";for(let k=0,n="",m,v;k<e.length;k++)m=e.charAt(k),m===n&&this.dedupe||((v=this.mapper&&this.mapper.get(m))||""===v?v===n&&this.dedupe||!(n=v)||(c+=v):c+=n=m);e=c}this.matcher&&1<e.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),e=e.replace(this.s,k=>this.matcher.get(k)));if(e&&this.replacer)for(c=0;e&&c<this.replacer.length;c+=2)e=e.replace(this.replacer[c],
-this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();const I={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};J.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,C=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):K(C,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):K(C,f,p,c,t);L(this,
-m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):K(C,f,p,c,h);L(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],L(this,m,e,g,a,b);break}default:if(L(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):K(e+(f/2>e?0:1),f,p,h-1,k-1),
-t=this.bidirectional&&l>g;L(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function L(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function K(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};J.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=M(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=M(this,a[1],a[0]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
-0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=M(this,q,m);a:{g=l;var v=f,C=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,A;x<p;x++)if(A=g[x])t[x]=A;if(t.length){v.push(t);l=void 0;break a}}l=C?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,A;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
-x.length&&(q=x[l]))for(g=0;g<q.length;g++)if(t=q[g],(h=b[t])?b[t]++:(h=0,b[t]=1),A=e[h]||(e[h]=[]),A.push(t),d&&h===m-1&&A.length-c===d){m=A;break b}if(a=e.length)if(f){if(1<e.length)c:for(a=[],k=w(),f=e.length,h=f-1;0<=h;h--){if(b=(f=e[h])&&f.length)for(n=0;n<b;n++)if(m=f[n],!k[m])if(k[m]=1,c)c--;else if(a.push(m),a.length===d)break c}else a=(e=e[0]).length>d||c?e.slice(c,d+c):e;e=a}else{if(a<m){m=[];break b}e=e[a-1];if(d||c)if(e.length>d||c)e=e.slice(c,d+c)}m=e}else if(1===f){d=H.call(null,a[0],
-d,c);break a}d=m}return d};function M(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};J.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else N(this.map,a),this.depth&&N(this.ctx,a);d||this.reg.delete(a)}return this};
-function N(a,d){let b=0;if(a.constructor===Array)for(let f=0,c,g;f<a.length;f++){if((c=a[f])&&c.length)if(g=c.indexOf(d),0<=g){1<c.length?(c.splice(g,1),b++):delete a[f];break}else b++}else for(let f of a.entries()){const c=f[0],g=N(f[1],d);g?b+=g:a.delete(c)}return b};function J(a,d){if(!this||this.constructor!==J)return new J(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},I[b],a))}else a={};b=a.context;const f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||{};this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
-a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=J.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
-function O(a){let d=0;if(a.constructor===Array)for(let b=0,f;b<a.length;b++)(f=a[b])&&(d+=f.length);else for(const b of a.entries()){const f=b[0],c=O(b[1]);c?d+=c:a.delete(f)}return d}r.cleanup=function(){if(!this.fastupdate)return this;O(this.map);this.depth&&O(this.ctx);return this};w();export default {Index:J,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
-export const Index=J;export const Charset=null;export const Encoder=F;export const Document=null;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
+this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();I.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else J(this.map,a),this.depth&&J(this.ctx,a);d||this.reg.delete(a)}return this};
+function J(a,d){let b=0;var f="undefined"===typeof d;if(a.constructor===Array)for(let c=0,g,e;c<a.length;c++){if((g=a[c])&&g.length)if(f)b++;else if(e=g.indexOf(d),0<=e){1<g.length?(g.splice(e,1),b++):delete a[c];break}else b++}else for(let c of a.entries()){f=c[0];const g=J(c[1],d);g?b+=g:a.delete(f)}return b};const K={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};I.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,D=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):L(D,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):L(D,f,p,c,t);M(this,
+m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):L(D,f,p,c,h);M(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],M(this,m,e,g,a,b);break}default:if(M(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):L(e+(f/2>e?0:1),f,p,h-1,k-1),
+t=this.bidirectional&&l>g;M(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function M(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function L(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};I.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=N(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=N(this,a[1],a[0]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
+0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=N(this,q,m);a:{g=l;var v=f,D=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,y;x<p;x++)if(y=g[x])t[x]=y;if(t.length){v.push(t);l=void 0;break a}}l=D?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,y;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
+x.length&&(q=x[l]))for(g=0;g<q.length;g++)if(t=q[g],(h=b[t])?b[t]++:(h=0,b[t]=1),y=e[h]||(e[h]=[]),y.push(t),d&&h===m-1&&y.length-c===d){m=c?y.slice(c):y;break b}if(a=e.length)if(f){if(1<e.length)c:for(a=[],k=w(),f=e.length,h=f-1;0<=h;h--){if(b=(f=e[h])&&f.length)for(n=0;n<b;n++)if(m=f[n],!k[m])if(k[m]=1,c)c--;else if(a.push(m),a.length===d)break c}else a=(e=e[0]).length>d||c?e.slice(c,d+c):e;e=a}else{if(a<m){m=[];break b}e=e[a-1];if(d||c)if(e.length>d||c)e=e.slice(c,d+c)}m=e}else if(1===f){d=H.call(null,
+a[0],d,c);break a}d=m}return d};function N(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};function I(a,d){if(!this||this.constructor!==I)return new I(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},K[b],a))}else a={};b=a.context;const f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||{};this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
+a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=I.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
+r.cleanup=function(){if(!this.fastupdate)return this;J(this.map);this.depth&&J(this.ctx);return this};w();export default {Index:I,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
+export const Index=I;export const Charset=null;export const Encoder=F;export const Document=null;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
diff --git a/dist/module-debug/bundle.js b/dist/module-debug/bundle.js
index 95e5e38..19a3757 100644
--- a/dist/module-debug/bundle.js
+++ b/dist/module-debug/bundle.js
@@ -267,6 +267,8 @@ import { KeystoreMap, KeystoreArray, KeystoreSet } from "./keystore.js";
 /** @export */ResolverOptions.or;
 /** @export */ResolverOptions.xor;
 /** @export */ResolverOptions.not;
+/** @export */ResolverOptions.pluck;
+/** @export */ResolverOptions.field;
 
 const FlexSearch = {
     Index: Index,
diff --git a/dist/module-debug/document/search.js b/dist/module-debug/document/search.js
index 68f56b6..9a923fc 100644
--- a/dist/module-debug/document/search.js
+++ b/dist/module-debug/document/search.js
@@ -463,44 +463,45 @@ function highlight_fields(result, query, index, field, tree, template) {
         for (let j = 0; j < res.length; j++) {
             let str = "",
                 content = parse_simple(res[j].doc, path),
-                doc_enc = encoder.encode(content),
-                doc_org = content.split(encoder.split);
+                doc_org = content.split(/\s+/);
+            //let doc_enc = encoder.encode(content);
 
-
-            for (let k = 0, doc_enc_cur, doc_org_cur; k < doc_enc.length; k++) {
-                doc_enc_cur = doc_enc[k];
+            for (let k = 0, doc_org_cur, doc_enc_cur; k < doc_org.length; k++) {
                 doc_org_cur = doc_org[k];
-
-                if (!doc_enc_cur || !doc_org_cur) {
-                    continue;
-                }
+                //doc_enc_cur = doc_enc[k];
+                doc_enc_cur = encoder.encode(doc_org_cur).join(" ");
 
                 let found;
-                for (let l = 0, query_enc_cur; l < query_enc.length; l++) {
-                    query_enc_cur = query_enc[l];
-                    // todo tokenize could be custom also when "strict" was used
-                    if ("strict" === tokenize) {
-                        if (doc_enc_cur === query_enc_cur) {
-                            str += (str ? " " : "") + template.replace("$1", doc_org_cur);
-                            found = !0;
-                            break;
-                        }
-                    } else {
-                        const position = doc_enc_cur.indexOf(query_enc_cur);
-                        if (-1 < position) {
-                            str += (str ? " " : "") +
-                            // prefix
-                            doc_org_cur.substring(0, position) +
-                            // match
-                            template.replace("$1", doc_org_cur.substring(position, query_enc_cur.length)) +
-                            // suffix
-                            doc_org_cur.substring(position + query_enc_cur.length);
-                            found = !0;
-                            break;
-                        }
-                    }
 
-                    //str += doc_enc[k].replace(new RegExp("(" + doc_enc[k] + ")", "g"), template.replace("$1", content))
+                if (doc_enc_cur && doc_org_cur) {
+
+                    for (let l = 0, query_enc_cur; l < query_enc.length; l++) {
+                        query_enc_cur = query_enc[l];
+                        // todo tokenize could be custom also when "strict" was used
+                        if ("strict" === tokenize) {
+                            if (doc_enc_cur === query_enc_cur) {
+                                str += (str ? " " : "") + template.replace("$1", doc_org_cur);
+                                found = !0;
+                                break;
+                            }
+                        } else {
+                            const position = doc_enc_cur.indexOf(query_enc_cur);
+                            //console.log(doc_org_cur, doc_enc_cur, query_enc_cur, position)
+                            if (-1 < position) {
+                                str += (str ? " " : "") +
+                                // prefix
+                                doc_org_cur.substring(0, position) +
+                                // match
+                                template.replace("$1", doc_org_cur.substring(position, query_enc_cur.length)) +
+                                // suffix
+                                doc_org_cur.substring(position + query_enc_cur.length);
+                                found = !0;
+                                break;
+                            }
+                        }
+
+                        //str += doc_enc[k].replace(new RegExp("(" + doc_enc[k] + ")", "g"), template.replace("$1", content))
+                    }
                 }
 
                 if (!found) {
diff --git a/dist/module-debug/index.js b/dist/module-debug/index.js
index e5e3f02..95f9449 100644
--- a/dist/module-debug/index.js
+++ b/dist/module-debug/index.js
@@ -13,6 +13,7 @@ import Charset from "./charset.js";
 import { KeystoreMap, KeystoreSet } from "./keystore.js";
 import { is_array, is_string } from "./common.js";
 import { exportIndex, importIndex, serialize } from "./serialize.js";
+import { remove_index } from "./index/remove.js";
 //import default_encoder from "./charset/latin/default.js";
 import apply_preset from "./preset.js";
 import apply_async from "./async.js";
@@ -160,29 +161,31 @@ Index.prototype.update = function (id, content) {
     return res && res.then ? res.then(() => self.add(id, content)) : this.add(id, content);
 };
 
-/**
- * @param map
- * @return {number}
- */
-
-function cleanup_index(map) {
-
-    let count = 0;
-
-    if (is_array(map)) {
-        for (let i = 0, arr; i < map.length; i++) {
-            (arr = map[i]) && (count += arr.length);
-        }
-    } else for (const item of map.entries()) {
-        const key = item[0],
-              value = item[1],
-              tmp = cleanup_index(value);
-
-        tmp ? count += tmp : map.delete(key);
-    }
-
-    return count;
-}
+// /**
+//  * @param map
+//  * @return {number}
+//  */
+//
+// function cleanup_index(map){
+//
+//     let count = 0;
+//
+//     if(is_array(map)){
+//         for(let i = 0, arr; i < map.length; i++){
+//             (arr = map[i]) &&
+//             (count += arr.length);
+//         }
+//     }
+//     else for(const item of map.entries()){
+//         const key = item[0];
+//         const value = item[1];
+//         const tmp = cleanup_index(value);
+//         tmp ? count += tmp
+//             : map.delete(key);
+//     }
+//
+//     return count;
+// }
 
 Index.prototype.cleanup = function () {
 
@@ -191,8 +194,11 @@ Index.prototype.cleanup = function () {
         return this;
     }
 
-    cleanup_index(this.map);
-    this.depth && cleanup_index(this.ctx);
+    remove_index(this.map);
+    //cleanup_index(this.map);
+    this.depth &&
+    //cleanup_index(this.ctx);
+    remove_index(this.ctx);
 
     return this;
 };
diff --git a/dist/module-debug/index/remove.js b/dist/module-debug/index/remove.js
index 481d4ae..2675be2 100644
--- a/dist/module-debug/index/remove.js
+++ b/dist/module-debug/index/remove.js
@@ -94,33 +94,40 @@ Index.prototype.remove = function (id, _skip_deletion) {
 };
 
 /**
+ * When called without passing ID it just will clean up
  * @param {!Map|Array<number|string|Array<number|string>>} map
- * @param {!number|string} id
+ * @param {!number|string=} id
  * @return {number}
  */
 
-function remove_index(map, id) {
+export function remove_index(map, id) {
 
     // a check counter of filled resolution slots
     // to prevent removing the field
     let count = 0;
 
+
     if (is_array(map)) {
         for (let x = 0, arr, index; x < map.length; x++) {
             if ((arr = map[x]) && arr.length) {
-                index = arr.indexOf(id);
-                if (0 <= index) {
-                    if (1 < arr.length) {
-                        arr.splice(index, 1);
-                        count++;
-                    } else {
-                        // remove resolution slot
-                        delete map[x];
-                    }
-                    // the index key:[res, id] is unique
-                    break;
-                } else {
+                if ("undefined" == typeof id) {
+                    //count += arr.length;
                     count++;
+                } else {
+                    index = arr.indexOf(id);
+                    if (0 <= index) {
+                        if (1 < arr.length) {
+                            arr.splice(index, 1);
+                            count++;
+                        } else {
+                            // remove resolution slot
+                            delete map[x];
+                        }
+                        // the index key:[res, id] is unique
+                        break;
+                    } else {
+                        count++;
+                    }
                 }
             }
         }
diff --git a/dist/module-debug/intersect.js b/dist/module-debug/intersect.js
index cf7105b..c64394e 100644
--- a/dist/module-debug/intersect.js
+++ b/dist/module-debug/intersect.js
@@ -81,11 +81,8 @@ export function intersect(arrays, resolution, limit, offset, suggest, boost, res
                     // fast path early result when limit was set
                     if (resolve) {
                         if (limit && count === length - 1) {
-                            // if(tmp.length - offset > limit){
-                            //     return tmp.slice(offset, limit + offset);
-                            // }
                             if (tmp.length - offset === limit) {
-                                return tmp;
+                                return offset ? tmp.slice(offset) : tmp;
                             }
                         }
                     }
@@ -196,7 +193,7 @@ export function union(arrays, limit, offset, resolve, boost) {
                             // adjust score to reduce resolution of suggestions
                             // todo: instead of applying the resolve task directly it could
                             //       be added to the chain and resolved later, that will keep
-                            //       the original score but also can't resolve early because of
+                            //       the original score but also can't resolve early when
                             //       nothing was found
                             let score = 0 | (k + (i < arr_len - 1 ? boost || 0 : 0)) / (i + 1),
                                 arr = result[score] || (result[score] = []);
diff --git a/dist/module-min/bundle.js b/dist/module-min/bundle.js
index 26f07c1..0d916b2 100644
--- a/dist/module-min/bundle.js
+++ b/dist/module-min/bundle.js
@@ -1 +1 @@
-import{SearchOptions,ContextOptions,DocumentDescriptor,DocumentSearchOptions,FieldOptions,IndexOptions,DocumentOptions,TagOptions,StoreOptions,EncoderOptions,EncoderSplitOptions,PersistentOptions,ResolverOptions}from"./type.js";import StorageInterface from"./db/interface.js";import Document from"./document.js";import Index from"./index.js";import WorkerIndex from"./worker.js";import Resolver from"./resolver.js";import Encoder from"./encoder.js";import IdxDB from"./db/indexeddb/index.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreArray,KeystoreSet}from"./keystore.js";Index.prototype.add,Index.prototype.append,Index.prototype.search,Index.prototype.update,Index.prototype.remove,Index.prototype.contain,Index.prototype.clear,Index.prototype.cleanup,Index.prototype.searchCache,Index.prototype.addAsync,Index.prototype.appendAsync,Index.prototype.searchAsync,Index.prototype.updateAsync,Index.prototype.removeAsync,Index.prototype.export,Index.prototype.import,Index.prototype.serialize,Index.prototype.mount,Index.prototype.commit,Index.prototype.destroy,Index.prototype.encoder,Index.prototype.reg,Index.prototype.map,Index.prototype.ctx,Index.prototype.db,Index.prototype.tag,Index.prototype.store,Index.prototype.depth,Index.prototype.bidirectional,Index.prototype.commit_task,Index.prototype.commit_timer,Index.prototype.cache,Index.prototype.bypass,Index.prototype.document,Encoder.prototype.assign,Encoder.prototype.encode,Encoder.prototype.addMatcher,Encoder.prototype.addStemmer,Encoder.prototype.addFilter,Encoder.prototype.addMapper,Encoder.prototype.addReplacer,Document.prototype.add,Document.prototype.append,Document.prototype.search,Document.prototype.update,Document.prototype.remove,Document.prototype.contain,Document.prototype.clear,Document.prototype.cleanup,Document.prototype.addAsync,Document.prototype.appendAsync,Document.prototype.searchAsync,Document.prototype.updateAsync,Document.prototype.removeAsync,Document.prototype.mount,Document.prototype.commit,Document.prototype.destroy,Document.prototype.export,Document.prototype.import,Document.prototype.searchCache,Document.prototype.get,Document.prototype.set,Document.prototype.field,Document.prototype.index,Document.prototype.reg,Document.prototype.tag,Document.prototype.store,Document.prototype.fastupdate,Resolver.prototype.limit,Resolver.prototype.offset,Resolver.prototype.boost,Resolver.prototype.resolve,Resolver.prototype.or,Resolver.prototype.and,Resolver.prototype.xor,Resolver.prototype.not,Resolver.prototype.result,StorageInterface.db,StorageInterface.id,StorageInterface.support_tag_search,StorageInterface.fastupdate,StorageInterface.prototype.mount,StorageInterface.prototype.open,StorageInterface.prototype.close,StorageInterface.prototype.destroy,StorageInterface.prototype.clear,StorageInterface.prototype.get,StorageInterface.prototype.tag,StorageInterface.prototype.enrich,StorageInterface.prototype.has,StorageInterface.prototype.search,StorageInterface.prototype.info,StorageInterface.prototype.commit,StorageInterface.prototype.remove,KeystoreArray.length,KeystoreMap.size,KeystoreSet.size,Charset.LatinExact,Charset.LatinDefault,Charset.LatinSimple,Charset.LatinBalance,Charset.LatinAdvanced,Charset.LatinExtra,Charset.LatinSoundex,Charset.ArabicDefault,Charset.CjkDefault,Charset.CyrillicDefault,IndexOptions.preset,IndexOptions.context,IndexOptions.encoder,IndexOptions.encode,IndexOptions.resolution,IndexOptions.tokenize,IndexOptions.fastupdate,IndexOptions.score,IndexOptions.keystore,IndexOptions.rtl,IndexOptions.cache,IndexOptions.resolve,IndexOptions.db,IndexOptions.worker,IndexOptions.config,IndexOptions.priority,IndexOptions.export,IndexOptions.import,FieldOptions.preset,FieldOptions.context,FieldOptions.encoder,FieldOptions.encode,FieldOptions.resolution,FieldOptions.tokenize,FieldOptions.fastupdate,FieldOptions.score,FieldOptions.keystore,FieldOptions.rtl,FieldOptions.cache,FieldOptions.db,FieldOptions.config,FieldOptions.resolve,FieldOptions.field,FieldOptions.filter,FieldOptions.custom,FieldOptions.worker,DocumentOptions.context,DocumentOptions.encoder,DocumentOptions.encode,DocumentOptions.resolution,DocumentOptions.tokenize,DocumentOptions.fastupdate,DocumentOptions.score,DocumentOptions.keystore,DocumentOptions.rtl,DocumentOptions.cache,DocumentOptions.db,DocumentOptions.doc,DocumentOptions.document,DocumentOptions.worker,DocumentOptions.priority,DocumentOptions.export,DocumentOptions.import,ContextOptions.depth,ContextOptions.bidirectional,ContextOptions.resolution,DocumentDescriptor.field,DocumentDescriptor.index,DocumentDescriptor.tag,DocumentDescriptor.store,DocumentDescriptor.id,TagOptions.field,TagOptions.tag,TagOptions.filter,TagOptions.custom,TagOptions.keystore,TagOptions.db,TagOptions.config,StoreOptions.field,StoreOptions.filter,StoreOptions.custom,StoreOptions.config,SearchOptions.query,SearchOptions.limit,SearchOptions.offset,SearchOptions.context,SearchOptions.suggest,SearchOptions.resolve,SearchOptions.enrich,SearchOptions.resolution,DocumentSearchOptions.query,DocumentSearchOptions.limit,DocumentSearchOptions.offset,DocumentSearchOptions.context,DocumentSearchOptions.suggest,DocumentSearchOptions.enrich,DocumentSearchOptions.tag,DocumentSearchOptions.field,DocumentSearchOptions.index,DocumentSearchOptions.pluck,DocumentSearchOptions.merge,DocumentSearchOptions.highlight,EncoderOptions.rtl,EncoderOptions.dedupe,EncoderOptions.split,EncoderOptions.include,EncoderOptions.exclude,EncoderOptions.prepare,EncoderOptions.finalize,EncoderOptions.filter,EncoderOptions.matcher,EncoderOptions.mapper,EncoderOptions.stemmer,EncoderOptions.replacer,EncoderOptions.minlength,EncoderOptions.maxlength,EncoderOptions.cache,EncoderSplitOptions.letter,EncoderSplitOptions.number,EncoderSplitOptions.symbol,EncoderSplitOptions.punctuation,EncoderSplitOptions.control,EncoderSplitOptions.char,PersistentOptions.name,PersistentOptions.field,PersistentOptions.type,PersistentOptions.db,ResolverOptions.index,ResolverOptions.query,ResolverOptions.limit,ResolverOptions.offset,ResolverOptions.enrich,ResolverOptions.resolve,ResolverOptions.suggest,ResolverOptions.and,ResolverOptions.or,ResolverOptions.xor,ResolverOptions.not;const FlexSearch={Index:Index,Charset:Charset,Encoder:Encoder,Document:Document,Worker:WorkerIndex,Resolver:Resolver,IndexedDB:IdxDB,Language:{}};{const a="undefined"==typeof self?"undefined"==typeof global?self:global:self;let b;(b=a.define)&&b.amd?b([],function(){return FlexSearch}):"object"==typeof a.exports?a.exports=FlexSearch:a.FlexSearch=FlexSearch}export default FlexSearch;export{Index,Document,Encoder,Charset,WorkerIndex as Worker,Resolver,IdxDB as IndexedDB};
\ No newline at end of file
+import{SearchOptions,ContextOptions,DocumentDescriptor,DocumentSearchOptions,FieldOptions,IndexOptions,DocumentOptions,TagOptions,StoreOptions,EncoderOptions,EncoderSplitOptions,PersistentOptions,ResolverOptions}from"./type.js";import StorageInterface from"./db/interface.js";import Document from"./document.js";import Index from"./index.js";import WorkerIndex from"./worker.js";import Resolver from"./resolver.js";import Encoder from"./encoder.js";import IdxDB from"./db/indexeddb/index.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreArray,KeystoreSet}from"./keystore.js";Index.prototype.add,Index.prototype.append,Index.prototype.search,Index.prototype.update,Index.prototype.remove,Index.prototype.contain,Index.prototype.clear,Index.prototype.cleanup,Index.prototype.searchCache,Index.prototype.addAsync,Index.prototype.appendAsync,Index.prototype.searchAsync,Index.prototype.updateAsync,Index.prototype.removeAsync,Index.prototype.export,Index.prototype.import,Index.prototype.serialize,Index.prototype.mount,Index.prototype.commit,Index.prototype.destroy,Index.prototype.encoder,Index.prototype.reg,Index.prototype.map,Index.prototype.ctx,Index.prototype.db,Index.prototype.tag,Index.prototype.store,Index.prototype.depth,Index.prototype.bidirectional,Index.prototype.commit_task,Index.prototype.commit_timer,Index.prototype.cache,Index.prototype.bypass,Index.prototype.document,Encoder.prototype.assign,Encoder.prototype.encode,Encoder.prototype.addMatcher,Encoder.prototype.addStemmer,Encoder.prototype.addFilter,Encoder.prototype.addMapper,Encoder.prototype.addReplacer,Document.prototype.add,Document.prototype.append,Document.prototype.search,Document.prototype.update,Document.prototype.remove,Document.prototype.contain,Document.prototype.clear,Document.prototype.cleanup,Document.prototype.addAsync,Document.prototype.appendAsync,Document.prototype.searchAsync,Document.prototype.updateAsync,Document.prototype.removeAsync,Document.prototype.mount,Document.prototype.commit,Document.prototype.destroy,Document.prototype.export,Document.prototype.import,Document.prototype.searchCache,Document.prototype.get,Document.prototype.set,Document.prototype.field,Document.prototype.index,Document.prototype.reg,Document.prototype.tag,Document.prototype.store,Document.prototype.fastupdate,Resolver.prototype.limit,Resolver.prototype.offset,Resolver.prototype.boost,Resolver.prototype.resolve,Resolver.prototype.or,Resolver.prototype.and,Resolver.prototype.xor,Resolver.prototype.not,Resolver.prototype.result,StorageInterface.db,StorageInterface.id,StorageInterface.support_tag_search,StorageInterface.fastupdate,StorageInterface.prototype.mount,StorageInterface.prototype.open,StorageInterface.prototype.close,StorageInterface.prototype.destroy,StorageInterface.prototype.clear,StorageInterface.prototype.get,StorageInterface.prototype.tag,StorageInterface.prototype.enrich,StorageInterface.prototype.has,StorageInterface.prototype.search,StorageInterface.prototype.info,StorageInterface.prototype.commit,StorageInterface.prototype.remove,KeystoreArray.length,KeystoreMap.size,KeystoreSet.size,Charset.LatinExact,Charset.LatinDefault,Charset.LatinSimple,Charset.LatinBalance,Charset.LatinAdvanced,Charset.LatinExtra,Charset.LatinSoundex,Charset.ArabicDefault,Charset.CjkDefault,Charset.CyrillicDefault,IndexOptions.preset,IndexOptions.context,IndexOptions.encoder,IndexOptions.encode,IndexOptions.resolution,IndexOptions.tokenize,IndexOptions.fastupdate,IndexOptions.score,IndexOptions.keystore,IndexOptions.rtl,IndexOptions.cache,IndexOptions.resolve,IndexOptions.db,IndexOptions.worker,IndexOptions.config,IndexOptions.priority,IndexOptions.export,IndexOptions.import,FieldOptions.preset,FieldOptions.context,FieldOptions.encoder,FieldOptions.encode,FieldOptions.resolution,FieldOptions.tokenize,FieldOptions.fastupdate,FieldOptions.score,FieldOptions.keystore,FieldOptions.rtl,FieldOptions.cache,FieldOptions.db,FieldOptions.config,FieldOptions.resolve,FieldOptions.field,FieldOptions.filter,FieldOptions.custom,FieldOptions.worker,DocumentOptions.context,DocumentOptions.encoder,DocumentOptions.encode,DocumentOptions.resolution,DocumentOptions.tokenize,DocumentOptions.fastupdate,DocumentOptions.score,DocumentOptions.keystore,DocumentOptions.rtl,DocumentOptions.cache,DocumentOptions.db,DocumentOptions.doc,DocumentOptions.document,DocumentOptions.worker,DocumentOptions.priority,DocumentOptions.export,DocumentOptions.import,ContextOptions.depth,ContextOptions.bidirectional,ContextOptions.resolution,DocumentDescriptor.field,DocumentDescriptor.index,DocumentDescriptor.tag,DocumentDescriptor.store,DocumentDescriptor.id,TagOptions.field,TagOptions.tag,TagOptions.filter,TagOptions.custom,TagOptions.keystore,TagOptions.db,TagOptions.config,StoreOptions.field,StoreOptions.filter,StoreOptions.custom,StoreOptions.config,SearchOptions.query,SearchOptions.limit,SearchOptions.offset,SearchOptions.context,SearchOptions.suggest,SearchOptions.resolve,SearchOptions.enrich,SearchOptions.resolution,DocumentSearchOptions.query,DocumentSearchOptions.limit,DocumentSearchOptions.offset,DocumentSearchOptions.context,DocumentSearchOptions.suggest,DocumentSearchOptions.enrich,DocumentSearchOptions.tag,DocumentSearchOptions.field,DocumentSearchOptions.index,DocumentSearchOptions.pluck,DocumentSearchOptions.merge,DocumentSearchOptions.highlight,EncoderOptions.rtl,EncoderOptions.dedupe,EncoderOptions.split,EncoderOptions.include,EncoderOptions.exclude,EncoderOptions.prepare,EncoderOptions.finalize,EncoderOptions.filter,EncoderOptions.matcher,EncoderOptions.mapper,EncoderOptions.stemmer,EncoderOptions.replacer,EncoderOptions.minlength,EncoderOptions.maxlength,EncoderOptions.cache,EncoderSplitOptions.letter,EncoderSplitOptions.number,EncoderSplitOptions.symbol,EncoderSplitOptions.punctuation,EncoderSplitOptions.control,EncoderSplitOptions.char,PersistentOptions.name,PersistentOptions.field,PersistentOptions.type,PersistentOptions.db,ResolverOptions.index,ResolverOptions.query,ResolverOptions.limit,ResolverOptions.offset,ResolverOptions.enrich,ResolverOptions.resolve,ResolverOptions.suggest,ResolverOptions.and,ResolverOptions.or,ResolverOptions.xor,ResolverOptions.not,ResolverOptions.pluck,ResolverOptions.field;const FlexSearch={Index:Index,Charset:Charset,Encoder:Encoder,Document:Document,Worker:WorkerIndex,Resolver:Resolver,IndexedDB:IdxDB,Language:{}};{const a="undefined"==typeof self?"undefined"==typeof global?self:global:self;let b;(b=a.define)&&b.amd?b([],function(){return FlexSearch}):"object"==typeof a.exports?a.exports=FlexSearch:a.FlexSearch=FlexSearch}export default FlexSearch;export{Index,Document,Encoder,Charset,WorkerIndex as Worker,Resolver,IdxDB as IndexedDB};
\ No newline at end of file
diff --git a/dist/module-min/document/search.js b/dist/module-min/document/search.js
index 905590e..45e0478 100644
--- a/dist/module-min/document/search.js
+++ b/dist/module-min/document/search.js
@@ -1 +1 @@
-import{DocumentSearchOptions,DocumentSearchResults,EnrichedDocumentSearchResults,MergedDocumentSearchResults,MergedDocumentSearchEntry,EnrichedSearchResults,SearchResults,IntermediateSearchResults}from"../type.js";import{create_object,is_array,is_object,is_string,parse_simple}from"../common.js";import{intersect_union}from"../intersect.js";import Document from"../document.js";import Index from"../index.js";import Resolver from"../resolver.js";import tick from"../profiler.js";Document.prototype.search=function(a,b,c,d){!1,c||(!b&&is_object(a)?(c=a,a=""):is_object(b)&&(c=b,b=0));let e,f,g,h,j,k,l,m,n=[],o=[],p=0,q=!0;if(c){if(is_array(c)&&(c={index:c}),a=c.query||a,e=c.pluck,g=c.merge,j=e||c.field||(j=c.index)&&(j.index?null:j),k=this.tag&&c.tag,h=c.suggest,q=!1!==c.resolve,(q||e||(j=j||this.field,j&&(is_string(j)?e=j:(is_array(j)&&1===j.length&&(j=j[0]),e=j.field||j.index))),!1,f=this.store&&c.enrich&&q,m=f&&c.highlight,b=c.limit||b,l=c.offset||0,b||(b=100),k&&(!this.db||!d))){!1,k.constructor!==Array&&(k=[k]);let c=[];for(let a,b=0;b<k.length;b++)if(a=k[b],a.field&&a.tag){const b=a.tag;if(b.constructor===Array)for(let d=0;d<b.length;d++)c.push(a.field,b[d]);else c.push(a.field,b)}else{const b=Object.keys(a);for(let d,e,f=0;f<b.length;f++)if(d=b[f],e=a[d],e.constructor===Array)for(let a=0;a<e.length;a++)c.push(d,e[a]);else c.push(d,e)}if(k=c,!a){let a=[];if(c.length)for(let d=0;d<c.length;d+=2){let e;if(this.db){const g=this.index.get(c[d]);if(!g){continue}!1,a.push(e=g.db.tag(c[d+1],b,l,f))}else!1,e=get_tag.call(this,c[d],c[d+1],b,l,f);n.push({field:c[d],tag:c[d+1],result:e})}return a.length?Promise.all(a).then(function(a){for(let b=0;b<a.length;b++)n[b].result=a[b];return n}):n}}j&&j.constructor!==Array&&(j=[j])}j||(j=this.field);let r,s=!d&&(this.worker||this.db)&&[];for(let e,g,m,t=0;t<j.length;t++){if(g=j[t],this.db&&this.tag&&!this.tree[t])continue;let i;if(is_string(g)||(i=g,g=i.field,a=i.query||a,b=i.limit||b,l=i.offset||l,h=i.suggest||h,f=this.store&&(i.enrich||f)),d)e=d[t];else{let d=i||c,h=this.index.get(g);if(k&&(this.db&&(d.tag=k,r=h.db.support_tag_search,d.field=j),!r&&(d.enrich=!1)),s){s[t]=h.search(a,b,d),d&&f&&(d.enrich=f);continue}else e=h.search(a,b,d),d&&f&&(d.enrich=f)}if(m=e&&(q?e.length:e.result.length),k&&m){const a=[];let b=0;if(!(this.db&&d))for(let c,d,e=0;e<k.length;e+=2){if(!1,c=this.tag.get(k[e]),!c)if(!1,h)continue;else return q?n:new Resolver(n);if(c=c&&c.get(k[e+1]),d=c&&c.length,d)b++,a.push(c);else if(!h)return q?n:new Resolver(n)}else if(!r)for(let c=j.length;c<d.length;c++){let e=d[c],f=e&&e.length;if(f)b++,a.push(e);else if(!h)return q?n:new Resolver(n)}if(b){if(!1,e=intersect_union(e,a,q),m=e.length,!m&&!h)return q?e:new Resolver(e);b--}}if(m)o[p]=g,n.push(e),p++;else if(1===j.length)return q?n:new Resolver(n)}if(s){if(this.db&&k&&k.length&&!r)for(let a=0;a<k.length;a+=2){const c=this.index.get(k[a]);if(!c)if(!1,h)continue;else return q?n:new Resolver(n);!1,s.push(c.db.tag(k[a+1],b,l,!1))}const d=this;return Promise.all(s).then(function(e){return e.length?d.search(a,b,c,e):e})}if(!p)return q?n:new Resolver(n);if(e&&(!f||!this.store))return n[0];s=[];for(let g,h=0;h<o.length;h++){if(g=n[h],f&&g.length&&"undefined"==typeof g[0].doc&&(this.db?(!1,s.push(g=this.index.get(this.field[0]).db.enrich(g))):g=apply_enrich.call(this,g)),e)return q?g:new Resolver(g);n[h]={field:o[h],result:g}}if(f&&!0&&this.db&&s.length){const c=this;return Promise.all(s).then(function(d){for(let a=0;a<d.length;a++)n[a].result=d[a];return g?merge_fields(n,b,l):m?highlight_fields(n,a,c.index,c.field,c.tree,m,b,l):n})}return g?merge_fields(n,b,l):m?highlight_fields(n,a,this.index,this.field,this.tree,m,b,l):n};function highlight_fields(a,b,c,d,e,f){let g,h,j;for(let k,l,m,n,o,p=0;p<a.length;p++){o=a[p].result,k=a[p].field,m=c.get(k),l=m.encoder,j=m.tokenize,n=e[d.indexOf(k)],l!==g&&(g=l,h=g.encode(b));for(let a=0;a<o.length;a++){let b="",c=parse_simple(o[a].doc,n),d=g.encode(c),e=c.split(g.split);for(let a,c,g=0;g<d.length;g++){if(a=d[g],c=e[g],!a||!c)continue;let i;for(let d,e=0;e<h.length;e++)if(d=h[e],"strict"!==j){const e=a.indexOf(d);if(-1<e){b+=(b?" ":"")+c.substring(0,e)+f.replace("$1",c.substring(e,d.length))+c.substring(e+d.length),i=!0;break}}else if(a===d){b+=(b?" ":"")+f.replace("$1",c),i=!0;break}i||(b+=(b?" ":"")+e[g])}o[a].highlight=b}}return a}function merge_fields(a,b){const c=[],d=create_object();for(let e,f,g=0;g<a.length;g++){e=a[g],f=e.result;for(let a,g,h,i=0;i<f.length;i++)if(g=f[i],"object"!=typeof g&&(g={id:g}),a=g.id,h=d[a],!h){if(c.length===b)return c;g.field=d[a]=[e.field],c.push(g)}else h.push(e.field)}return c}function get_tag(a,b,c,d){let e=this.tag.get(a);if(!e)return!1,[];e=e&&e.get(b);e&&e.length-d}export function apply_enrich(a){if(!this||!this.store)return a;const b=Array(a.length);for(let c,d=0;d<a.length;d++)c=a[d],b[d]={id:c,doc:this.store.get(c)};return b}
\ No newline at end of file
+import{DocumentSearchOptions,DocumentSearchResults,EnrichedDocumentSearchResults,MergedDocumentSearchResults,MergedDocumentSearchEntry,EnrichedSearchResults,SearchResults,IntermediateSearchResults}from"../type.js";import{create_object,is_array,is_object,is_string,parse_simple}from"../common.js";import{intersect_union}from"../intersect.js";import Document from"../document.js";import Index from"../index.js";import Resolver from"../resolver.js";import tick from"../profiler.js";Document.prototype.search=function(a,b,c,d){!1,c||(!b&&is_object(a)?(c=a,a=""):is_object(b)&&(c=b,b=0));let e,f,g,h,j,k,l,m,n=[],o=[],p=0,q=!0;if(c){if(is_array(c)&&(c={index:c}),a=c.query||a,e=c.pluck,g=c.merge,j=e||c.field||(j=c.index)&&(j.index?null:j),k=this.tag&&c.tag,h=c.suggest,q=!1!==c.resolve,(q||e||(j=j||this.field,j&&(is_string(j)?e=j:(is_array(j)&&1===j.length&&(j=j[0]),e=j.field||j.index))),!1,f=this.store&&c.enrich&&q,m=f&&c.highlight,b=c.limit||b,l=c.offset||0,b||(b=100),k&&(!this.db||!d))){!1,k.constructor!==Array&&(k=[k]);let c=[];for(let a,b=0;b<k.length;b++)if(a=k[b],a.field&&a.tag){const b=a.tag;if(b.constructor===Array)for(let d=0;d<b.length;d++)c.push(a.field,b[d]);else c.push(a.field,b)}else{const b=Object.keys(a);for(let d,e,f=0;f<b.length;f++)if(d=b[f],e=a[d],e.constructor===Array)for(let a=0;a<e.length;a++)c.push(d,e[a]);else c.push(d,e)}if(k=c,!a){let a=[];if(c.length)for(let d=0;d<c.length;d+=2){let e;if(this.db){const g=this.index.get(c[d]);if(!g){continue}!1,a.push(e=g.db.tag(c[d+1],b,l,f))}else!1,e=get_tag.call(this,c[d],c[d+1],b,l,f);n.push({field:c[d],tag:c[d+1],result:e})}return a.length?Promise.all(a).then(function(a){for(let b=0;b<a.length;b++)n[b].result=a[b];return n}):n}}j&&j.constructor!==Array&&(j=[j])}j||(j=this.field);let r,s=!d&&(this.worker||this.db)&&[];for(let e,g,m,t=0;t<j.length;t++){if(g=j[t],this.db&&this.tag&&!this.tree[t])continue;let i;if(is_string(g)||(i=g,g=i.field,a=i.query||a,b=i.limit||b,l=i.offset||l,h=i.suggest||h,f=this.store&&(i.enrich||f)),d)e=d[t];else{let d=i||c,h=this.index.get(g);if(k&&(this.db&&(d.tag=k,r=h.db.support_tag_search,d.field=j),!r&&(d.enrich=!1)),s){s[t]=h.search(a,b,d),d&&f&&(d.enrich=f);continue}else e=h.search(a,b,d),d&&f&&(d.enrich=f)}if(m=e&&(q?e.length:e.result.length),k&&m){const a=[];let b=0;if(!(this.db&&d))for(let c,d,e=0;e<k.length;e+=2){if(!1,c=this.tag.get(k[e]),!c)if(!1,h)continue;else return q?n:new Resolver(n);if(c=c&&c.get(k[e+1]),d=c&&c.length,d)b++,a.push(c);else if(!h)return q?n:new Resolver(n)}else if(!r)for(let c=j.length;c<d.length;c++){let e=d[c],f=e&&e.length;if(f)b++,a.push(e);else if(!h)return q?n:new Resolver(n)}if(b){if(!1,e=intersect_union(e,a,q),m=e.length,!m&&!h)return q?e:new Resolver(e);b--}}if(m)o[p]=g,n.push(e),p++;else if(1===j.length)return q?n:new Resolver(n)}if(s){if(this.db&&k&&k.length&&!r)for(let a=0;a<k.length;a+=2){const c=this.index.get(k[a]);if(!c)if(!1,h)continue;else return q?n:new Resolver(n);!1,s.push(c.db.tag(k[a+1],b,l,!1))}const d=this;return Promise.all(s).then(function(e){return e.length?d.search(a,b,c,e):e})}if(!p)return q?n:new Resolver(n);if(e&&(!f||!this.store))return n[0];s=[];for(let g,h=0;h<o.length;h++){if(g=n[h],f&&g.length&&"undefined"==typeof g[0].doc&&(this.db?(!1,s.push(g=this.index.get(this.field[0]).db.enrich(g))):g=apply_enrich.call(this,g)),e)return q?g:new Resolver(g);n[h]={field:o[h],result:g}}if(f&&!0&&this.db&&s.length){const c=this;return Promise.all(s).then(function(d){for(let a=0;a<d.length;a++)n[a].result=d[a];return g?merge_fields(n,b,l):m?highlight_fields(n,a,c.index,c.field,c.tree,m,b,l):n})}return g?merge_fields(n,b,l):m?highlight_fields(n,a,this.index,this.field,this.tree,m,b,l):n};function highlight_fields(a,b,c,d,e,f){let g,h,j;for(let k,l,m,n,o,p=0;p<a.length;p++){o=a[p].result,k=a[p].field,m=c.get(k),l=m.encoder,j=m.tokenize,n=e[d.indexOf(k)],l!==g&&(g=l,h=g.encode(b));for(let a=0;a<o.length;a++){let b="",c=parse_simple(o[a].doc,n),d=c.split(/\s+/);for(let a,c,e=0;e<d.length;e++){a=d[e],c=g.encode(a).join(" ");let i;if(c&&a)for(let d,e=0;e<h.length;e++)if(d=h[e],"strict"!==j){const e=c.indexOf(d);if(-1<e){b+=(b?" ":"")+a.substring(0,e)+f.replace("$1",a.substring(e,d.length))+a.substring(e+d.length),i=!0;break}}else if(c===d){b+=(b?" ":"")+f.replace("$1",a),i=!0;break}i||(b+=(b?" ":"")+d[e])}o[a].highlight=b}}return a}function merge_fields(a,b){const c=[],d=create_object();for(let e,f,g=0;g<a.length;g++){e=a[g],f=e.result;for(let a,g,h,i=0;i<f.length;i++)if(g=f[i],"object"!=typeof g&&(g={id:g}),a=g.id,h=d[a],!h){if(c.length===b)return c;g.field=d[a]=[e.field],c.push(g)}else h.push(e.field)}return c}function get_tag(a,b,c,d){let e=this.tag.get(a);if(!e)return!1,[];e=e&&e.get(b);e&&e.length-d}export function apply_enrich(a){if(!this||!this.store)return a;const b=Array(a.length);for(let c,d=0;d<a.length;d++)c=a[d],b[d]={id:c,doc:this.store.get(c)};return b}
\ No newline at end of file
diff --git a/dist/module-min/index.js b/dist/module-min/index.js
index d092445..7bf306c 100644
--- a/dist/module-min/index.js
+++ b/dist/module-min/index.js
@@ -1 +1 @@
-import{IndexOptions,ContextOptions,EncoderOptions}from"./type.js";import Encoder,{fallback_encoder}from"./encoder.js";import Cache,{searchCache}from"./cache.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreSet}from"./keystore.js";import{is_array,is_string}from"./common.js";import{exportIndex,importIndex,serialize}from"./serialize.js";import apply_preset from"./preset.js";import apply_async from"./async.js";import tick from"./profiler.js";import"./index/add.js";import"./index/search.js";import"./index/remove.js";export default function Index(a,b){if(!this||this.constructor!==Index)return new Index(a);!1,a=a?apply_preset(a):{};let c=a.context;const d=!0===c?{depth:1}:c||{},e=is_string(a.encoder)?Charset[a.encoder]:a.encode||a.encoder||{};this.encoder=e.encode?e:"object"==typeof e?new Encoder(e):{encode:e},this.compress=a.compress||a.compression||!1,this.resolution=a.resolution||9,this.tokenize=c=(c=a.tokenize)&&"default"!==c&&"exact"!==c&&c||"strict",this.depth="strict"===c&&d.depth||0,this.bidirectional=!1!==d.bidirectional,this.fastupdate=!!a.fastupdate,this.score=a.score||null,!1,c=a.keystore||0,c&&(this.keystore=c),this.map=c&&!0?new KeystoreMap(c):new Map,this.ctx=c&&!0?new KeystoreMap(c):new Map,this.reg=b||(this.fastupdate?c&&!0?new KeystoreMap(c):new Map:c&&!0?new KeystoreSet(c):new Set),this.resolution_ctx=d.resolution||3,this.rtl=e.rtl||a.rtl||!1,this.cache=(c=a.cache||null)&&new Cache(c),this.resolve=!1!==a.resolve,(c=a.db)&&(this.db=this.mount(c)),this.commit_auto=!1!==a.commit,this.commit_task=[],this.commit_timer=null,this.priority=a.priority||4}Index.prototype.mount=function(a){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),a.mount(this)},Index.prototype.commit=function(a,b){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.commit(this,a,b)},Index.prototype.destroy=function(){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.destroy()};export function autoCommit(a,b,c){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null,a.db.commit(a,b,c)},1))}Index.prototype.clear=function(){return this.map.clear(),this.ctx.clear(),this.reg.clear(),this.cache&&this.cache.clear(),this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]),this},Index.prototype.append=function(a,b){return this.add(a,b,!0)},Index.prototype.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)},Index.prototype.update=function(a,b){const c=this,d=this.remove(a);return d&&d.then?d.then(()=>c.add(a,b)):this.add(a,b)};function cleanup_index(a){let b=0;if(is_array(a))for(let c,d=0;d<a.length;d++)(c=a[d])&&(b+=c.length);else for(const c of a.entries()){const d=c[0],e=c[1],f=cleanup_index(e);f?b+=f:a.delete(d)}return b}Index.prototype.cleanup=function(){return this.fastupdate?(cleanup_index(this.map),this.depth&&cleanup_index(this.ctx),this):(!1,this)},Index.prototype.searchCache=searchCache,Index.prototype.export=exportIndex,Index.prototype.import=importIndex,Index.prototype.serialize=serialize,apply_async(Index.prototype);
\ No newline at end of file
+import{IndexOptions,ContextOptions,EncoderOptions}from"./type.js";import Encoder,{fallback_encoder}from"./encoder.js";import Cache,{searchCache}from"./cache.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreSet}from"./keystore.js";import{is_array,is_string}from"./common.js";import{exportIndex,importIndex,serialize}from"./serialize.js";import{remove_index}from"./index/remove.js";import apply_preset from"./preset.js";import apply_async from"./async.js";import tick from"./profiler.js";import"./index/add.js";import"./index/search.js";import"./index/remove.js";export default function Index(a,b){if(!this||this.constructor!==Index)return new Index(a);!1,a=a?apply_preset(a):{};let c=a.context;const d=!0===c?{depth:1}:c||{},e=is_string(a.encoder)?Charset[a.encoder]:a.encode||a.encoder||{};this.encoder=e.encode?e:"object"==typeof e?new Encoder(e):{encode:e},this.compress=a.compress||a.compression||!1,this.resolution=a.resolution||9,this.tokenize=c=(c=a.tokenize)&&"default"!==c&&"exact"!==c&&c||"strict",this.depth="strict"===c&&d.depth||0,this.bidirectional=!1!==d.bidirectional,this.fastupdate=!!a.fastupdate,this.score=a.score||null,!1,c=a.keystore||0,c&&(this.keystore=c),this.map=c&&!0?new KeystoreMap(c):new Map,this.ctx=c&&!0?new KeystoreMap(c):new Map,this.reg=b||(this.fastupdate?c&&!0?new KeystoreMap(c):new Map:c&&!0?new KeystoreSet(c):new Set),this.resolution_ctx=d.resolution||3,this.rtl=e.rtl||a.rtl||!1,this.cache=(c=a.cache||null)&&new Cache(c),this.resolve=!1!==a.resolve,(c=a.db)&&(this.db=this.mount(c)),this.commit_auto=!1!==a.commit,this.commit_task=[],this.commit_timer=null,this.priority=a.priority||4}Index.prototype.mount=function(a){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),a.mount(this)},Index.prototype.commit=function(a,b){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.commit(this,a,b)},Index.prototype.destroy=function(){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.destroy()};export function autoCommit(a,b,c){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null,a.db.commit(a,b,c)},1))}Index.prototype.clear=function(){return this.map.clear(),this.ctx.clear(),this.reg.clear(),this.cache&&this.cache.clear(),this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]),this},Index.prototype.append=function(a,b){return this.add(a,b,!0)},Index.prototype.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)},Index.prototype.update=function(a,b){const c=this,d=this.remove(a);return d&&d.then?d.then(()=>c.add(a,b)):this.add(a,b)},Index.prototype.cleanup=function(){return this.fastupdate?(remove_index(this.map),this.depth&&remove_index(this.ctx),this):(!1,this)},Index.prototype.searchCache=searchCache,Index.prototype.export=exportIndex,Index.prototype.import=importIndex,Index.prototype.serialize=serialize,apply_async(Index.prototype);
\ No newline at end of file
diff --git a/dist/module-min/index/remove.js b/dist/module-min/index/remove.js
index 7474a4c..70c23a2 100644
--- a/dist/module-min/index/remove.js
+++ b/dist/module-min/index/remove.js
@@ -1 +1 @@
-import{is_array}from"../common.js";import Index,{autoCommit}from"../index.js";Index.prototype.remove=function(a,b){const c=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(c){if(this.fastupdate){for(let b,d=0;d<c.length;d++)if(!(b=c[d]));else if(2>b.length)b.pop();else{const d=b.indexOf(a);d===c.length-1?b.pop():b.splice(d,1)}}else remove_index(this.map,a),this.depth&&remove_index(this.ctx,a);b||this.reg.delete(a)}return this.db&&(this.commit_task.push({del:a}),this.commit_auto&&autoCommit(this)),this.cache&&this.cache.remove(a),this};function remove_index(a,b){let c=0;if(is_array(a)){for(let d,e,f=0;f<a.length;f++)if((d=a[f])&&d.length)if(e=d.indexOf(b),0<=e){1<d.length?(d.splice(e,1),c++):delete a[f];break}else c++;}else for(let d of a.entries()){const e=d[0],f=d[1],g=remove_index(f,b);g?c+=g:a.delete(e)}return c}
\ No newline at end of file
+import{is_array}from"../common.js";import Index,{autoCommit}from"../index.js";Index.prototype.remove=function(a,b){const c=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(c){if(this.fastupdate){for(let b,d=0;d<c.length;d++)if(!(b=c[d]));else if(2>b.length)b.pop();else{const d=b.indexOf(a);d===c.length-1?b.pop():b.splice(d,1)}}else remove_index(this.map,a),this.depth&&remove_index(this.ctx,a);b||this.reg.delete(a)}return this.db&&(this.commit_task.push({del:a}),this.commit_auto&&autoCommit(this)),this.cache&&this.cache.remove(a),this};export function remove_index(a,b){let c=0;if(is_array(a)){for(let d,e,f=0;f<a.length;f++)if((d=a[f])&&d.length)if("undefined"==typeof b)c++;else if(e=d.indexOf(b),0<=e){1<d.length?(d.splice(e,1),c++):delete a[f];break}else c++;}else for(let d of a.entries()){const e=d[0],f=d[1],g=remove_index(f,b);g?c+=g:a.delete(e)}return c}
\ No newline at end of file
diff --git a/dist/module-min/intersect.js b/dist/module-min/intersect.js
index 24be5d7..14a44f3 100644
--- a/dist/module-min/intersect.js
+++ b/dist/module-min/intersect.js
@@ -1 +1 @@
-import{create_object,concat,sort_by_length_up,get_max_len}from"./common.js";import{SearchResults,IntermediateSearchResults}from"./type.js";export function intersect(a,b,c,d,e,f,g){const h=a.length;let i,j,k=[];i=create_object();for(let l,m,n,o,p=0;p<b;p++)for(let b=0;b<h;b++)if(n=a[b],p<n.length&&(l=n[p]))for(let a=0;a<l.length;a++){if(m=l[a],(j=i[m])?i[m]++:(j=0,i[m]=1),o=k[j]||(k[j]=[]),!g){let a=p+(b||!e?0:f||0);o=o[a]||(o[a]=[])}if(o.push(m),g&&c&&j===h-1&&o.length-d===c)return o}const l=k.length;if(l)if(!e){if(l<h)return[];if(k=k[l-1],c||d){if(g)(k.length>c||d)&&(k=k.slice(d,c+d));else{const a=[];for(let b,e=0;e<k.length;e++){if(b=k[e],b.length>d){d-=b.length;continue}if((b.length>c||d)&&(b=b.slice(d,c+d),c-=b.length,d&&(d-=b.length)),a.push(b),!c)break}k=1<a.length?concat(a):a[0]}return k}}else k=1<k.length?union(k,c,d,g,f):(k=k[0]).length>c||d?k.slice(d,c+d):k;return k}export function union(a,b,c,d,e){const f=[],g=create_object();let h,l,m,n=a.length;if(!d)for(let d,j=n-1,i=0;0<=j;j--){d=a[j];for(let a=0;a<d.length;a++)if(h=d[a],m=h&&h.length,m)for(let d=0;d<m;d++)if(l=h[d],!g[l])if(g[l]=1,c)c--;else{let c=0|(a+(j<n-1?e||0:0))/(j+1),d=f[c]||(f[c]=[]);if(d.push(l),++i===b)return f}}else for(let d=n-1;0<=d;d--)if(h=a[d],m=h&&h.length,m)for(let a=0;a<m;a++)if(l=h[a],!g[l])if(g[l]=1,c)c--;else if(f.push(l),f.length===b)return f;return f}export function intersect_union(a,b,c){const d=create_object(),e=[];for(let e,f=0;f<b.length;f++){e=b[f];for(let a=0;a<e.length;a++)d[e[a]]=1}if(c)for(let b,c=0;c<a.length;c++)b=a[c],d[b]&&(e.push(b),d[b]=0);else for(let b,c,f=0;f<a.result.length;f++){b=a.result[f];for(let a=0;a<b.length;a++)if(c=b[a],d[c]){const a=e[f]||(e[f]=[]);a.push(c),d[c]=0}}return e}
\ No newline at end of file
+import{create_object,concat,sort_by_length_up,get_max_len}from"./common.js";import{SearchResults,IntermediateSearchResults}from"./type.js";export function intersect(a,b,c,d,e,f,g){const h=a.length;let i,j,k=[];i=create_object();for(let l,m,n,o,p=0;p<b;p++)for(let b=0;b<h;b++)if(n=a[b],p<n.length&&(l=n[p]))for(let a=0;a<l.length;a++){if(m=l[a],(j=i[m])?i[m]++:(j=0,i[m]=1),o=k[j]||(k[j]=[]),!g){let a=p+(b||!e?0:f||0);o=o[a]||(o[a]=[])}if(o.push(m),g&&c&&j===h-1&&o.length-d===c)return d?o.slice(d):o}const l=k.length;if(l)if(!e){if(l<h)return[];if(k=k[l-1],c||d){if(g)(k.length>c||d)&&(k=k.slice(d,c+d));else{const a=[];for(let b,e=0;e<k.length;e++){if(b=k[e],b.length>d){d-=b.length;continue}if((b.length>c||d)&&(b=b.slice(d,c+d),c-=b.length,d&&(d-=b.length)),a.push(b),!c)break}k=1<a.length?concat(a):a[0]}return k}}else k=1<k.length?union(k,c,d,g,f):(k=k[0]).length>c||d?k.slice(d,c+d):k;return k}export function union(a,b,c,d,e){const f=[],g=create_object();let h,l,m,n=a.length;if(!d)for(let d,j=n-1,i=0;0<=j;j--){d=a[j];for(let a=0;a<d.length;a++)if(h=d[a],m=h&&h.length,m)for(let d=0;d<m;d++)if(l=h[d],!g[l])if(g[l]=1,c)c--;else{let c=0|(a+(j<n-1?e||0:0))/(j+1),d=f[c]||(f[c]=[]);if(d.push(l),++i===b)return f}}else for(let d=n-1;0<=d;d--)if(h=a[d],m=h&&h.length,m)for(let a=0;a<m;a++)if(l=h[a],!g[l])if(g[l]=1,c)c--;else if(f.push(l),f.length===b)return f;return f}export function intersect_union(a,b,c){const d=create_object(),e=[];for(let e,f=0;f<b.length;f++){e=b[f];for(let a=0;a<e.length;a++)d[e[a]]=1}if(c)for(let b,c=0;c<a.length;c++)b=a[c],d[b]&&(e.push(b),d[b]=0);else for(let b,c,f=0;f<a.result.length;f++){b=a.result[f];for(let a=0;a<b.length;a++)if(c=b[a],d[c]){const a=e[f]||(e[f]=[]);a.push(c),d[c]=0}}return e}
\ No newline at end of file
diff --git a/dist/module/bundle.js b/dist/module/bundle.js
index 95e5e38..19a3757 100644
--- a/dist/module/bundle.js
+++ b/dist/module/bundle.js
@@ -267,6 +267,8 @@ import { KeystoreMap, KeystoreArray, KeystoreSet } from "./keystore.js";
 /** @export */ResolverOptions.or;
 /** @export */ResolverOptions.xor;
 /** @export */ResolverOptions.not;
+/** @export */ResolverOptions.pluck;
+/** @export */ResolverOptions.field;
 
 const FlexSearch = {
     Index: Index,
diff --git a/dist/module/document/search.js b/dist/module/document/search.js
index fbd9e40..9dc606e 100644
--- a/dist/module/document/search.js
+++ b/dist/module/document/search.js
@@ -443,44 +443,45 @@ function highlight_fields(result, query, index, field, tree, template) {
         for (let j = 0; j < res.length; j++) {
             let str = "",
                 content = parse_simple(res[j].doc, path),
-                doc_enc = encoder.encode(content),
-                doc_org = content.split(encoder.split);
+                doc_org = content.split(/\s+/);
+            //let doc_enc = encoder.encode(content);
 
-
-            for (let k = 0, doc_enc_cur, doc_org_cur; k < doc_enc.length; k++) {
-                doc_enc_cur = doc_enc[k];
+            for (let k = 0, doc_org_cur, doc_enc_cur; k < doc_org.length; k++) {
                 doc_org_cur = doc_org[k];
-
-                if (!doc_enc_cur || !doc_org_cur) {
-                    continue;
-                }
+                //doc_enc_cur = doc_enc[k];
+                doc_enc_cur = encoder.encode(doc_org_cur).join(" ");
 
                 let found;
-                for (let l = 0, query_enc_cur; l < query_enc.length; l++) {
-                    query_enc_cur = query_enc[l];
-                    // todo tokenize could be custom also when "strict" was used
-                    if ("strict" === tokenize) {
-                        if (doc_enc_cur === query_enc_cur) {
-                            str += (str ? " " : "") + template.replace("$1", doc_org_cur);
-                            found = !0;
-                            break;
-                        }
-                    } else {
-                        const position = doc_enc_cur.indexOf(query_enc_cur);
-                        if (-1 < position) {
-                            str += (str ? " " : "") +
-                            // prefix
-                            doc_org_cur.substring(0, position) +
-                            // match
-                            template.replace("$1", doc_org_cur.substring(position, query_enc_cur.length)) +
-                            // suffix
-                            doc_org_cur.substring(position + query_enc_cur.length);
-                            found = !0;
-                            break;
-                        }
-                    }
 
-                    //str += doc_enc[k].replace(new RegExp("(" + doc_enc[k] + ")", "g"), template.replace("$1", content))
+                if (doc_enc_cur && doc_org_cur) {
+
+                    for (let l = 0, query_enc_cur; l < query_enc.length; l++) {
+                        query_enc_cur = query_enc[l];
+                        // todo tokenize could be custom also when "strict" was used
+                        if ("strict" === tokenize) {
+                            if (doc_enc_cur === query_enc_cur) {
+                                str += (str ? " " : "") + template.replace("$1", doc_org_cur);
+                                found = !0;
+                                break;
+                            }
+                        } else {
+                            const position = doc_enc_cur.indexOf(query_enc_cur);
+                            //console.log(doc_org_cur, doc_enc_cur, query_enc_cur, position)
+                            if (-1 < position) {
+                                str += (str ? " " : "") +
+                                // prefix
+                                doc_org_cur.substring(0, position) +
+                                // match
+                                template.replace("$1", doc_org_cur.substring(position, query_enc_cur.length)) +
+                                // suffix
+                                doc_org_cur.substring(position + query_enc_cur.length);
+                                found = !0;
+                                break;
+                            }
+                        }
+
+                        //str += doc_enc[k].replace(new RegExp("(" + doc_enc[k] + ")", "g"), template.replace("$1", content))
+                    }
                 }
 
                 if (!found) {
diff --git a/dist/module/index.js b/dist/module/index.js
index de9ca8c..24ca24f 100644
--- a/dist/module/index.js
+++ b/dist/module/index.js
@@ -13,6 +13,7 @@ import Charset from "./charset.js";
 import { KeystoreMap, KeystoreSet } from "./keystore.js";
 import { is_array, is_string } from "./common.js";
 import { exportIndex, importIndex, serialize } from "./serialize.js";
+import { remove_index } from "./index/remove.js";
 //import default_encoder from "./charset/latin/default.js";
 import apply_preset from "./preset.js";
 import apply_async from "./async.js";
@@ -155,29 +156,31 @@ Index.prototype.update = function (id, content) {
     return res && res.then ? res.then(() => self.add(id, content)) : this.add(id, content);
 };
 
-/**
- * @param map
- * @return {number}
- */
-
-function cleanup_index(map) {
-
-    let count = 0;
-
-    if (is_array(map)) {
-        for (let i = 0, arr; i < map.length; i++) {
-            (arr = map[i]) && (count += arr.length);
-        }
-    } else for (const item of map.entries()) {
-        const key = item[0],
-              value = item[1],
-              tmp = cleanup_index(value);
-
-        tmp ? count += tmp : map.delete(key);
-    }
-
-    return count;
-}
+// /**
+//  * @param map
+//  * @return {number}
+//  */
+//
+// function cleanup_index(map){
+//
+//     let count = 0;
+//
+//     if(is_array(map)){
+//         for(let i = 0, arr; i < map.length; i++){
+//             (arr = map[i]) &&
+//             (count += arr.length);
+//         }
+//     }
+//     else for(const item of map.entries()){
+//         const key = item[0];
+//         const value = item[1];
+//         const tmp = cleanup_index(value);
+//         tmp ? count += tmp
+//             : map.delete(key);
+//     }
+//
+//     return count;
+// }
 
 Index.prototype.cleanup = function () {
 
@@ -185,8 +188,11 @@ Index.prototype.cleanup = function () {
         return this;
     }
 
-    cleanup_index(this.map);
-    this.depth && cleanup_index(this.ctx);
+    remove_index(this.map);
+    //cleanup_index(this.map);
+    this.depth &&
+    //cleanup_index(this.ctx);
+    remove_index(this.ctx);
 
     return this;
 };
diff --git a/dist/module/index/remove.js b/dist/module/index/remove.js
index 481d4ae..2675be2 100644
--- a/dist/module/index/remove.js
+++ b/dist/module/index/remove.js
@@ -94,33 +94,40 @@ Index.prototype.remove = function (id, _skip_deletion) {
 };
 
 /**
+ * When called without passing ID it just will clean up
  * @param {!Map|Array<number|string|Array<number|string>>} map
- * @param {!number|string} id
+ * @param {!number|string=} id
  * @return {number}
  */
 
-function remove_index(map, id) {
+export function remove_index(map, id) {
 
     // a check counter of filled resolution slots
     // to prevent removing the field
     let count = 0;
 
+
     if (is_array(map)) {
         for (let x = 0, arr, index; x < map.length; x++) {
             if ((arr = map[x]) && arr.length) {
-                index = arr.indexOf(id);
-                if (0 <= index) {
-                    if (1 < arr.length) {
-                        arr.splice(index, 1);
-                        count++;
-                    } else {
-                        // remove resolution slot
-                        delete map[x];
-                    }
-                    // the index key:[res, id] is unique
-                    break;
-                } else {
+                if ("undefined" == typeof id) {
+                    //count += arr.length;
                     count++;
+                } else {
+                    index = arr.indexOf(id);
+                    if (0 <= index) {
+                        if (1 < arr.length) {
+                            arr.splice(index, 1);
+                            count++;
+                        } else {
+                            // remove resolution slot
+                            delete map[x];
+                        }
+                        // the index key:[res, id] is unique
+                        break;
+                    } else {
+                        count++;
+                    }
                 }
             }
         }
diff --git a/dist/module/intersect.js b/dist/module/intersect.js
index cf7105b..c64394e 100644
--- a/dist/module/intersect.js
+++ b/dist/module/intersect.js
@@ -81,11 +81,8 @@ export function intersect(arrays, resolution, limit, offset, suggest, boost, res
                     // fast path early result when limit was set
                     if (resolve) {
                         if (limit && count === length - 1) {
-                            // if(tmp.length - offset > limit){
-                            //     return tmp.slice(offset, limit + offset);
-                            // }
                             if (tmp.length - offset === limit) {
-                                return tmp;
+                                return offset ? tmp.slice(offset) : tmp;
                             }
                         }
                     }
@@ -196,7 +193,7 @@ export function union(arrays, limit, offset, resolve, boost) {
                             // adjust score to reduce resolution of suggestions
                             // todo: instead of applying the resolve task directly it could
                             //       be added to the chain and resolved later, that will keep
-                            //       the original score but also can't resolve early because of
+                            //       the original score but also can't resolve early when
                             //       nothing was found
                             let score = 0 | (k + (i < arr_len - 1 ? boost || 0 : 0)) / (i + 1),
                                 arr = result[score] || (result[score] = []);
diff --git a/index.d.ts b/index.d.ts
index 7b04796..135360b 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -206,15 +206,7 @@ declare module "flexsearch" {
 
     type DefaultSearchResults = Id[];
     type IntermediateSearchResults = Array<Id[]>;
-    type EnrichedSearchResults = Array<{
-        id: Id;
-        score: number;
-    }>;
-    type SearchResults =
-        DefaultSearchResults |
-        EnrichedSearchResults |
-        Resolver |
-        Promise<SearchResults>;
+    type SearchResults = DefaultSearchResults | Resolver;
 
     /**
      * **Document:**
@@ -232,12 +224,12 @@ declare module "flexsearch" {
         append(id: Id, content: string): this | Promise<this>;
         update(id: Id, content: string): this | Promise<this>;
         remove(id: Id): this | Promise<this>;
-        search(query: string, options?: Limit | SearchOptions): SearchResults;
-        search(query: string, limit: number, options: SearchOptions): SearchResults;
-        search(options: SearchOptions): SearchResults;
-        searchCache(query: string, options?: Limit | SearchOptions): SearchResults;
-        searchCache(query: string, limit: number, options: SearchOptions): SearchResults;
-        searchCache(options: SearchOptions): SearchResults;
+        search(query: string, options?: Limit | SearchOptions): SearchResults | Promise<SearchResults>;
+        search(query: string, limit: number, options: SearchOptions): SearchResults | Promise<SearchResults>;
+        search(options: SearchOptions): SearchResults | Promise<SearchResults>;
+        searchCache(query: string, options?: Limit | SearchOptions): SearchResults | Promise<SearchResults>;
+        searchCache(query: string, limit: number, options: SearchOptions): SearchResults | Promise<SearchResults>;
+        searchCache(options: SearchOptions): SearchResults | Promise<SearchResults>;
         // https://github.com/nextapps-de/flexsearch#check-existence-of-already-indexed-ids
         contain(id: Id): boolean | Promise<boolean>;
         clear(): void | Promise<void>;
@@ -349,16 +341,16 @@ declare module "flexsearch" {
     type EnrichedDocumentSearchResults = Array<{
         field?: FieldName;
         tag?: FieldName;
-        highlight?: TemplateResultHighlighting;
         result: Array<{
             id: Id;
-            doc: Object | null;
+            doc: DocumentData | null;
+            highlight?: string;
         }>;
     }>;
 
     type MergedDocumentSearchResults = Array<{
         id: Id;
-        doc: Object | null;
+        doc: DocumentData | null;
         field?: FieldName[];
         tag?: FieldName[];
     }>;
@@ -367,7 +359,7 @@ declare module "flexsearch" {
         DefaultDocumentSearchResults |
         EnrichedDocumentSearchResults |
         MergedDocumentSearchResults |
-        Promise<DocumentSearchResults>;
+        Resolver;
 
     /**
      *  # Document Search Result
@@ -399,11 +391,10 @@ declare module "flexsearch" {
         | number
         | boolean
         | null
-        | DocumentValue[]
-        | {[key: string]: DocumentValue};
+        | DocumentData;
 
     type DocumentData = {
-        [k: string]: DocumentValue;
+        [key: string]: DocumentValue | DocumentValue[];
     };
 
     /**
@@ -426,12 +417,12 @@ declare module "flexsearch" {
         remove(id: Id): this | Promise<this>;
         remove(document: DocumentData): this | Promise<this>;
         // https://github.com/nextapps-de/flexsearch#field-search
-        search(query: string, options?: Limit | DocumentSearchOptions): DocumentSearchResults;
-        search(query: string, limit: number, options: DocumentSearchOptions): DocumentSearchResults;
-        search(options: DocumentSearchOptions): DocumentSearchResults;
-        searchCache(query: string, options?: Limit | DocumentSearchOptions): DocumentSearchResults;
-        searchCache(query: string, limit: number, options: DocumentSearchOptions): DocumentSearchResults;
-        searchCache(options: DocumentSearchOptions): DocumentSearchResults;
+        search(query: string, options?: Limit | DocumentSearchOptions): DocumentSearchResults | Promise<DocumentSearchResults>;
+        search(query: string, limit: number, options: DocumentSearchOptions): DocumentSearchResults | Promise<DocumentSearchResults>;
+        search(options: DocumentSearchOptions): DocumentSearchResults | Promise<DocumentSearchResults>;
+        searchCache(query: string, options?: Limit | DocumentSearchOptions): DocumentSearchResults | Promise<DocumentSearchResults>;
+        searchCache(query: string, limit: number, options: DocumentSearchOptions): DocumentSearchResults | Promise<DocumentSearchResults>;
+        searchCache(options: DocumentSearchOptions): DocumentSearchResults | Promise<DocumentSearchResults>;
         // https://github.com/nextapps-de/flexsearch#check-existence-of-already-indexed-ids
         contain(id: Id): boolean | Promise<boolean>;
         clear(): void | Promise<void>;
@@ -542,10 +533,18 @@ declare module "flexsearch" {
         index?: Index | Document;
         resolve?: boolean;
         suggest?: boolean;
+        /** only usable when "resolve" was set to true */
+        enrich?: boolean;
+        boost?: number;
+        limit?: number;
+        offset?: number;
         and?: ResolverOptions | Array<ResolverOptions>;
         or?: ResolverOptions | Array<ResolverOptions>;
         xor?: ResolverOptions | Array<ResolverOptions>;
         not?: ResolverOptions | Array<ResolverOptions>;
+        pluck?: FieldName;
+        field?: FieldName;
+
     };
 
     export class Encoder {
diff --git a/package-lock.json b/package-lock.json
index 9ef7d07..1ac8321 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "flexsearch",
-  "version": "0.8.147",
+  "version": "0.8.149",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "flexsearch",
-      "version": "0.8.147",
+      "version": "0.8.149",
       "funding": [
         {
           "type": "github",
diff --git a/package.json b/package.json
index 24bdd8f..341d6b8 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "public": true,
   "preferGlobal": false,
   "name": "flexsearch",
-  "version": "0.8.148",
+  "version": "0.8.149",
   "description": "Next-Generation full-text search library for Browser and Node.js",
   "homepage": "https://github.com/nextapps-de/flexsearch/",
   "author": "Thomas Wilkerling",
diff --git a/src/bundle.js b/src/bundle.js
index 7f72476..54d22d0 100644
--- a/src/bundle.js
+++ b/src/bundle.js
@@ -298,6 +298,8 @@ if(SUPPORT_SERIALIZE){
 /** @export */ ResolverOptions.or;
 /** @export */ ResolverOptions.xor;
 /** @export */ ResolverOptions.not;
+/** @export */ ResolverOptions.pluck;
+/** @export */ ResolverOptions.field;
 
 const FlexSearch = {
     "Index": Index,
diff --git a/src/document/search.js b/src/document/search.js
index 1f0c393..a5cbdad 100644
--- a/src/document/search.js
+++ b/src/document/search.js
@@ -524,44 +524,46 @@ function highlight_fields(result, query, index, field, tree, template, limit, of
         for(let j = 0; j < res.length; j++){
             let str = "";
             let content = parse_simple(res[j]["doc"], path);
-            let doc_enc = encoder.encode(content);
-            let doc_org = content.split(encoder.split);
+            //let doc_enc = encoder.encode(content);
+            let doc_org = content.split(/\s+/);
 
-            for(let k = 0, doc_enc_cur, doc_org_cur; k < doc_enc.length; k++){
-                doc_enc_cur = doc_enc[k];
+            for(let k = 0, doc_org_cur, doc_enc_cur; k < doc_org.length; k++){
                 doc_org_cur = doc_org[k];
-
-                if(!doc_enc_cur || !doc_org_cur){
-                    continue;
-                }
+                //doc_enc_cur = doc_enc[k];
+                doc_enc_cur = encoder.encode(doc_org_cur).join(" ");
 
                 let found;
-                for(let l = 0, query_enc_cur; l < query_enc.length; l++){
-                    query_enc_cur = query_enc[l];
-                    // todo tokenize could be custom also when "strict" was used
-                    if(tokenize === "strict"){
-                        if(doc_enc_cur === query_enc_cur){
-                            str += (str ? " " : "") + template.replace("$1", doc_org_cur);
-                            found = true;
-                            break;
-                        }
-                    }
-                    else{
-                        const position = doc_enc_cur.indexOf(query_enc_cur);
-                        if(position > -1){
-                            str += (str ? " " : "") +
-                                // prefix
-                                doc_org_cur.substring(0, position) +
-                                // match
-                                template.replace("$1", doc_org_cur.substring(position, query_enc_cur.length)) +
-                                // suffix
-                                doc_org_cur.substring(position + query_enc_cur.length);
-                            found = true;
-                            break;
-                        }
-                    }
 
-                    //str += doc_enc[k].replace(new RegExp("(" + doc_enc[k] + ")", "g"), template.replace("$1", content))
+                if(doc_enc_cur && doc_org_cur){
+
+                    for(let l = 0, query_enc_cur; l < query_enc.length; l++){
+                        query_enc_cur = query_enc[l];
+                        // todo tokenize could be custom also when "strict" was used
+                        if(tokenize === "strict"){
+                            if(doc_enc_cur === query_enc_cur){
+                                str += (str ? " " : "") + template.replace("$1", doc_org_cur);
+                                found = true;
+                                break;
+                            }
+                        }
+                        else{
+                            const position = doc_enc_cur.indexOf(query_enc_cur);
+                            //console.log(doc_org_cur, doc_enc_cur, query_enc_cur, position)
+                            if(position > -1){
+                                str += (str ? " " : "") +
+                                    // prefix
+                                    doc_org_cur.substring(0, position) +
+                                    // match
+                                    template.replace("$1", doc_org_cur.substring(position, query_enc_cur.length)) +
+                                    // suffix
+                                    doc_org_cur.substring(position + query_enc_cur.length);
+                                found = true;
+                                break;
+                            }
+                        }
+
+                        //str += doc_enc[k].replace(new RegExp("(" + doc_enc[k] + ")", "g"), template.replace("$1", content))
+                    }
                 }
 
                 if(!found){
diff --git a/test/highlight.js b/test/highlight.js
index 55fec58..dd2b2bf 100644
--- a/test/highlight.js
+++ b/test/highlight.js
@@ -12,7 +12,7 @@ const Charset = _Charset || (await import("../src/charset.js")).default;
 
 if(!build_light) describe("Result Highlighting", function(){
 
-    it("Should have been indexed properly (tag)", function(){
+    it("Should have been indexed properly", function(){
 
         // some test data
         const data = [{
@@ -61,4 +61,71 @@ if(!build_light) describe("Result Highlighting", function(){
             highlight: 'Le <b>clown</b> et ses chiens'
         }]);
     });
+
+    it("Should have been indexed properly (#480)", function(){
+
+        const index = new Document({
+            document: {
+                store: true,
+                index: [{
+                    field: "title",
+                    tokenize: "forward",
+                    encoder: Charset.LatinDefault
+                },{
+                    field: "text",
+                    tokenize: "forward",
+                    encoder: Charset.LatinDefault
+                }]
+            }
+        });
+
+        let all_docs = [{
+            id: "469",
+            title: "Polygon",
+            text: "A polygon is a two dimensional figure"
+        },{
+            id: "888",
+            title: "Spain",
+            text: "Spain is a country."
+        },{
+            id: "473",
+            text: "Madrid (pronounced: “mah-drid or /məˈdrɪd/) is the capital and largest city of Spain. Madrid is in the middle of Spain, in the Community of Madrid. The Community is a large area that includes the city as well as small towns and villages outside the city. 7 million people live in the Community. More than 3 million live in the city itself. It is the largest city of Spain and, at 655 m (2,100 ft) above sea level, the second highest capital in Europe (after the Andorran capital Andorra la Vella). It is the second largest city in the European Union. As it is the capital city, Madrid is where the monarch lives and also where the government meets. Madrid is the financial centre of Spain. Many large businesses have their main offices there. It has four important footballs teams, Real Madrid, Atlético Madrid, Getafe, and Rayo Vallecano. People who live in Madrid are called madrileños. Madrid was ruled by the Romans from the 2nd century. After AD 711 it was occupied by the Moors. In 1083 Spain was ruled again by Spaniards. Catholic kings ruled the country. By the mid-16th century it had become the capital of a very large empire. Spain was ruled by monarchs from the House of Habsburg, then the House of Bourbon. After the Spanish Civil War it was ruled by a dictator until the mid-1970s when it became a democracy. Although it is a modern city, a lot of its history can be seen and felt as one walks along the streets and in the large squares of the city. There are beautiful parks, famous buildings, art galleries and concert halls. == History == During the history of Spain many different people have lived there. Madrid's name comes from the Arabic word magerit, meaning “place of many streams\\\". The Phoenicians came in 1100 BC, followed by Carthaginians, Romans, Vandals, Visigoths and Moors. It was not until 1492, when the Catholic Monarchs got power, that Spain became a united country. establishments in Europe Category:Establishments in Spain",
+            title: "Madrid"
+        }];
+
+        for(let i = 0; i < all_docs.length; i++){
+            index.add(all_docs[i]);
+        }
+
+        let result = index.search({
+            query: "spain",
+            suggest: true,
+            enrich: true,
+            highlight: "<b>$1</b>"
+        });
+
+
+        expect(result.length).to.equal(2);
+        expect(result[0]).to.eql({
+            field: "title",
+            result: [{
+                id: all_docs[1].id,
+                doc: all_docs[1],
+                highlight: '<b>Spain</b>'
+            }]
+        });
+
+        expect(result[1]).to.eql({
+            field: "text",
+            result: [{
+                id: all_docs[1].id,
+                doc: all_docs[1],
+                highlight: all_docs[1].text.replace(/(spain)/gi, "<b>$1</b>")
+            },{
+                id: all_docs[2].id,
+                doc: all_docs[2],
+                highlight: all_docs[2].text.replace(/(spain)/gi, "<b>$1</b>")
+            }]
+        });
+    });
 });