diff --git a/README.md b/README.md
index 83967d7..b704bd0 100644
--- a/README.md
+++ b/README.md
@@ -103,61 +103,61 @@ The **_dist_** folder are located in: `node_modules/flexsearch/dist/`
     <tr>
         <td>flexsearch.bundle.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.bundle.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.bundle.module.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.module.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.bundle.module.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.module.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.es5.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.es5.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.es5.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.es5.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.module.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.module.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.module.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.module.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
diff --git a/demo/autocomplete.html b/demo/autocomplete.html
index fc9daf2..dfc7007 100644
--- a/demo/autocomplete.html
+++ b/demo/autocomplete.html
@@ -76,8 +76,8 @@
 <div id="suggestions"></div>
 <script type="module">
 
-    import { Document, Charset } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
-    import data from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/demo/data/movies.js";
+    import { Document, Charset } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
+    import data from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/demo/data/movies.js";
 
     (function(){
 
diff --git a/dist/flexsearch.bundle.debug.js b/dist/flexsearch.bundle.debug.js
index 4348fc1..349640e 100644
--- a/dist/flexsearch.bundle.debug.js
+++ b/dist/flexsearch.bundle.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle/Debug)
+ * FlexSearch.js v0.8.103 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -13,8 +13,8 @@ function z(a, b, c) {
     if ("undefined" !== e) {
       if (c) {
         if ("function" === e && d === e) {
-          return function(k) {
-            return a(c(k));
+          return function(h) {
+            return a(c(h));
           };
         }
         b = a.constructor;
@@ -44,7 +44,7 @@ function z(a, b, c) {
   }
   return "undefined" === e ? b : a;
 }
-function C() {
+function B() {
   return Object.create(null);
 }
 function aa(a, b) {
@@ -223,8 +223,8 @@ u.encode = function(a) {
   this.numeric && 3 < a.length && (a = a.replace(ha, "$1 $2").replace(ia, "$1 $2").replace(fa, "$1 "));
   const b = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer);
   let c = [], d = this.split || "" === this.split ? a.split(this.split) : a;
-  for (let f = 0, g, k; f < d.length; f++) {
-    if (!(g = k = d[f])) {
+  for (let f = 0, g, h; f < d.length; f++) {
+    if (!(g = h = d[f])) {
       continue;
     }
     if (g.length < this.minlength) {
@@ -248,9 +248,9 @@ u.encode = function(a) {
         this.L = setTimeout(ka, 50, this);
       }
     }
-    let h;
-    this.stemmer && 2 < g.length && (this.O || (this.O = new RegExp("(?!^)(" + this.A + ")$")), g = g.replace(this.O, l => this.stemmer.get(l)), h = 1);
-    g && h && (g.length < this.minlength || this.filter && this.filter.has(g)) && (g = "");
+    let k;
+    this.stemmer && 2 < g.length && (this.O || (this.O = new RegExp("(?!^)(" + this.A + ")$")), g = g.replace(this.O, l => this.stemmer.get(l)), k = 1);
+    g && k && (g.length < this.minlength || this.filter && this.filter.has(g)) && (g = "");
     if (g && (this.mapper || this.dedupe && 1 < g.length)) {
       e = "";
       for (let l = 0, m = "", q, n; l < g.length; l++) {
@@ -264,7 +264,7 @@ u.encode = function(a) {
         g = g.replace(this.replacer[e], this.replacer[e + 1]);
       }
     }
-    this.cache && k.length <= this.M && (this.I.set(k, g), this.I.size > this.S && (this.I.clear(), this.M = this.M / 1.1 | 0));
+    this.cache && h.length <= this.M && (this.I.set(h, g), this.I.size > this.S && (this.I.clear(), this.M = this.M / 1.1 | 0));
     g && c.push(g);
   }
   this.finalize && (c = this.finalize(c) || c);
@@ -294,19 +294,19 @@ function ka(a) {
 ;let ma = 0;
 function N(a = {}) {
   function b(g) {
-    function k(h) {
-      h = h.data || h;
-      const l = h.id, m = l && e.h[l];
-      m && (m(h.msg), delete e.h[l]);
+    function h(k) {
+      k = k.data || k;
+      const l = k.id, m = l && e.h[l];
+      m && (m(k.msg), delete e.h[l]);
     }
     this.worker = g;
-    this.h = C();
+    this.h = B();
     if (this.worker) {
-      d ? this.worker.on("message", k) : this.worker.onmessage = k;
+      d ? this.worker.on("message", h) : this.worker.onmessage = h;
       if (a.config) {
-        return new Promise(function(h) {
+        return new Promise(function(k) {
           e.h[++ma] = function() {
-            h(e);
+            k(e);
           };
           e.worker.postMessage({id:ma, task:"init", factory:c, options:a});
         });
@@ -413,18 +413,18 @@ function ua(a, b) {
   return b;
 }
 function va(a, b, c, d, e, f, g = 0) {
-  const k = d && d.constructor === Array;
-  var h = k ? d.shift() : d;
-  if (!h) {
+  const h = d && d.constructor === Array;
+  var k = h ? d.shift() : d;
+  if (!k) {
     return this.export(a, b, e, f + 1);
   }
-  if ((h = a((b ? b + "." : "") + (g + 1) + "." + c, JSON.stringify(h))) && h.then) {
+  if ((k = a((b ? b + "." : "") + (g + 1) + "." + c, JSON.stringify(k))) && k.then) {
     const l = this;
-    return h.then(function() {
-      return va.call(l, a, b, c, k ? d : null, e, f, g + 1);
+    return k.then(function() {
+      return va.call(l, a, b, c, h ? d : null, e, f, g + 1);
     });
   }
-  return va.call(this, a, b, c, k ? d : null, e, f, g + 1);
+  return va.call(this, a, b, c, h ? d : null, e, f, g + 1);
 }
 ;function wa(a, b, c, d) {
   let e = [];
@@ -433,8 +433,8 @@ function va(a, b, c, d, e, f, g = 0) {
       b -= g.length;
     } else {
       b = g[d ? "splice" : "slice"](b, c);
-      const k = b.length;
-      if (k && (e = e.length ? e.concat(b) : b, c -= k, d && (a.length -= k), !c)) {
+      const h = b.length;
+      if (h && (e = e.length ? e.concat(b) : b, c -= h, d && (a.length -= h), !c)) {
         break;
       }
       b = 0;
@@ -469,13 +469,13 @@ function Q(a) {
     if ("indexOf" === d) {
       return function(e) {
         let f = 0;
-        for (let g = 0, k, h; g < b.index.length; g++) {
-          k = b.index[g];
-          h = k.indexOf(e);
-          if (0 <= h) {
-            return f + h;
+        for (let g = 0, h, k; g < b.index.length; g++) {
+          h = b.index[g];
+          k = h.indexOf(e);
+          if (0 <= k) {
+            return f + k;
           }
-          f += k.length;
+          f += h.length;
         }
         return -1;
       };
@@ -525,7 +525,7 @@ function R(a = 8) {
   if (!this) {
     return new R(a);
   }
-  this.index = C();
+  this.index = B();
   this.B = [];
   this.size = 0;
   32 < a ? (this.h = xa, this.A = BigInt(a)) : (this.h = ya, this.A = a);
@@ -543,7 +543,7 @@ function S(a = 8) {
   if (!this) {
     return new S(a);
   }
-  this.index = C();
+  this.index = B();
   this.h = [];
   32 < a ? (this.B = xa, this.A = BigInt(a)) : (this.B = ya, this.A = a);
 }
@@ -562,7 +562,7 @@ u.delete = S.prototype.delete = function(a) {
   b && b.delete(a) && this.size--;
 };
 u.clear = S.prototype.clear = function() {
-  this.index = C();
+  this.index = B();
   this.h = [];
   this.size = 0;
 };
@@ -620,15 +620,15 @@ function xa(a) {
     if (!c && this.reg.has(a)) {
       return this.update(a, b);
     }
-    for (let k = 0, h; k < this.field.length; k++) {
-      h = this.D[k];
-      var d = this.index.get(this.field[k]);
-      if ("function" === typeof h) {
-        var e = h(b);
+    for (let h = 0, k; h < this.field.length; h++) {
+      k = this.D[h];
+      var d = this.index.get(this.field[h]);
+      if ("function" === typeof k) {
+        var e = k(b);
         e && d.add(a, e, !1, !0);
       } else {
-        if (e = h.J, !e || e(b)) {
-          h.constructor === String ? h = ["" + h] : G(h) && (h = [h]), za(b, h, this.K, 0, d, a, h[0], c);
+        if (e = k.J, !e || e(b)) {
+          k.constructor === String ? k = ["" + k] : G(k) && (k = [k]), za(b, k, this.K, 0, d, a, k[0], c);
         }
       }
     }
@@ -636,14 +636,14 @@ function xa(a) {
       for (d = 0; d < this.G.length; d++) {
         var f = this.G[d], g = this.P[d];
         e = this.tag.get(g);
-        let k = C();
+        let h = B();
         if ("function" === typeof f) {
           if (f = f(b), !f) {
             continue;
           }
         } else {
-          const h = f.J;
-          if (h && !h(b)) {
+          const k = f.J;
+          if (k && !k(b)) {
             continue;
           }
           f.constructor === String && (f = "" + f);
@@ -651,8 +651,8 @@ function xa(a) {
         }
         if (e && f) {
           G(f) && (f = [f]);
-          for (let h = 0, l, m; h < f.length; h++) {
-            if (l = f[h], !k[l] && (k[l] = 1, (g = e.get(l)) ? m = g : e.set(l, m = []), !c || !m.includes(a))) {
+          for (let k = 0, l, m; k < f.length; k++) {
+            if (l = f[k], !h[l] && (h[l] = 1, (g = e.get(l)) ? m = g : e.set(l, m = []), !c || !m.includes(a))) {
               if (m.length === 2 ** 31 - 1) {
                 g = new Q(m);
                 if (this.fastupdate) {
@@ -672,11 +672,11 @@ function xa(a) {
       }
     }
     if (this.store && (!c || !this.store.has(a))) {
-      let k;
+      let h;
       if (this.C) {
-        k = C();
-        for (let h = 0, l; h < this.C.length; h++) {
-          l = this.C[h];
+        h = B();
+        for (let k = 0, l; k < this.C.length; k++) {
+          l = this.C[k];
           if ((c = l.J) && !c(b)) {
             continue;
           }
@@ -688,13 +688,13 @@ function xa(a) {
             }
             l = [l.U];
           } else if (G(l) || l.constructor === String) {
-            k[l] = b[l];
+            h[l] = b[l];
             continue;
           }
-          Aa(b, k, l, 0, l[0], m);
+          Aa(b, h, l, 0, l[0], m);
         }
       }
-      this.store.set(a, k || b);
+      this.store.set(a, h || b);
     }
   }
   return this;
@@ -709,11 +709,11 @@ function Aa(a, b, c, d, e, f) {
         Aa(a, b, c, d, e);
       }
     } else {
-      b = b[e] || (b[e] = C()), e = c[++d], Aa(a, b, c, d, e);
+      b = b[e] || (b[e] = B()), e = c[++d], Aa(a, b, c, d, e);
     }
   }
 }
-function za(a, b, c, d, e, f, g, k) {
+function za(a, b, c, d, e, f, g, h) {
   if (a = a[g]) {
     if (d === b.length - 1) {
       if (a.constructor === Array) {
@@ -725,14 +725,14 @@ function za(a, b, c, d, e, f, g, k) {
         }
         a = a.join(" ");
       }
-      e.add(f, a, k, !0);
+      e.add(f, a, h, !0);
     } else {
       if (a.constructor === Array) {
         for (g = 0; g < a.length; g++) {
-          za(a, b, c, d, e, f, g, k);
+          za(a, b, c, d, e, f, g, h);
         }
       } else {
-        g = b[++d], za(a, b, c, d, e, f, g, k);
+        g = b[++d], za(a, b, c, d, e, f, g, h);
       }
     }
   } else {
@@ -740,36 +740,36 @@ function za(a, b, c, d, e, f, g, k) {
   }
 }
 ;function Ba(a, b, c, d, e, f, g) {
-  const k = a.length;
-  let h = [], l;
+  const h = a.length;
+  let k = [], l;
   var m;
-  l = C();
-  for (let q = 0, n, p, t, r; q < b; q++) {
-    for (let w = 0; w < k; w++) {
-      if (t = a[w], q < t.length && (n = t[q])) {
+  l = B();
+  for (let q = 0, n, p, r, t; q < b; q++) {
+    for (let v = 0; v < h; v++) {
+      if (r = a[v], q < r.length && (n = r[q])) {
         for (let x = 0; x < n.length; x++) {
-          p = n[x], (m = l[p]) ? l[p]++ : (m = 0, l[p] = 1), r = h[m] || (h[m] = []), g || (m = q + (w ? 0 : f || 0), r = r[m] || (r[m] = [])), r.push(p);
+          p = n[x], (m = l[p]) ? l[p]++ : (m = 0, l[p] = 1), t = k[m] || (k[m] = []), g || (m = q + (v ? 0 : f || 0), t = t[m] || (t[m] = [])), t.push(p);
         }
       }
     }
   }
-  if (a = h.length) {
+  if (a = k.length) {
     if (e) {
-      h = 1 < h.length ? Ca(h, d, c, g, 0) : (h = h[0]).length > c || d ? h.slice(d, c + d) : h;
+      k = 1 < k.length ? Ca(k, d, c, g, 0) : (k = k[0]).length > c || d ? k.slice(d, c + d) : k;
     } else {
-      if (a < k) {
+      if (a < h) {
         return [];
       }
-      h = h[a - 1];
+      k = k[a - 1];
       if (c || d) {
         if (g) {
-          if (h.length > c || d) {
-            h = h.slice(d, c + d);
+          if (k.length > c || d) {
+            k = k.slice(d, c + d);
           }
         } else {
           e = [];
-          for (let q = 0, n; q < h.length; q++) {
-            if (n = h[q], n.length > d) {
+          for (let q = 0, n; q < k.length; q++) {
+            if (n = k[q], n.length > d) {
               d -= n.length;
             } else {
               if (n.length > c || d) {
@@ -781,26 +781,26 @@ function za(a, b, c, d, e, f, g, k) {
               }
             }
           }
-          h = 1 < e.length ? [].concat.apply([], e) : e[0];
+          k = 1 < e.length ? [].concat.apply([], e) : e[0];
         }
       }
     }
   }
-  return h;
+  return k;
 }
 function Ca(a, b, c, d, e) {
-  const f = [], g = C();
-  let k;
-  var h = a.length;
+  const f = [], g = B();
+  let h;
+  var k = a.length;
   let l, m = 0;
   if (d) {
-    for (e = h - 1; 0 <= e; e--) {
-      for (d = a[e], l = d.length, h = 0; h < l; h++) {
-        if (k = d[h], !g[k]) {
-          if (g[k] = 1, b) {
+    for (e = k - 1; 0 <= e; e--) {
+      for (d = a[e], l = d.length, k = 0; k < l; k++) {
+        if (h = d[k], !g[h]) {
+          if (g[h] = 1, b) {
             b--;
           } else {
-            if (f.push(k), f.length === c) {
+            if (f.push(h), f.length === c) {
               return f;
             }
           }
@@ -810,15 +810,15 @@ function Ca(a, b, c, d, e) {
   } else {
     let q = ca(a);
     for (let n = 0; n < q; n++) {
-      for (let p = h - 1; 0 <= p; p--) {
+      for (let p = k - 1; 0 <= p; p--) {
         if (l = (d = a[p][n]) && d.length) {
-          for (let t = 0; t < l; t++) {
-            if (k = d[t], !g[k]) {
-              if (g[k] = 1, b) {
+          for (let r = 0; r < l; r++) {
+            if (h = d[r], !g[h]) {
+              if (g[h] = 1, b) {
                 b--;
               } else {
-                let r = n + (p < h - 1 ? e || 0 : 0);
-                (f[r] || (f[r] = [])).push(k);
+                let t = n + (p < k - 1 ? e || 0 : 0);
+                (f[t] || (f[t] = [])).push(h);
                 if (++m === c) {
                   return f;
                 }
@@ -832,7 +832,7 @@ function Ca(a, b, c, d, e) {
   return f;
 }
 function Da(a, b) {
-  const c = C(), d = [];
+  const c = B(), d = [];
   for (let e = 0, f; e < b.length; e++) {
     f = b[e];
     for (let g = 0; g < f.length; g++) {
@@ -847,168 +847,168 @@ function Da(a, b) {
 ;T.prototype.search = function(a, b, c, d) {
   c || (!b && H(a) ? (c = a, a = "") : H(b) && (c = b, b = 0));
   let e = [], f = [], g;
-  let k;
   let h;
+  let k;
   let l, m = 0, q;
   if (c) {
     c.constructor === Array && (c = {index:c});
     a = c.query || a;
     g = c.pluck;
-    k = c.merge;
-    h = g || c.field || c.index;
+    h = c.merge;
+    k = g || c.field || c.index;
     var n = this.tag && c.tag;
     var p = this.store && c.enrich;
-    var t = c.suggest;
+    var r = c.suggest;
     q = c.highlight;
     b = c.limit || b;
     l = c.offset || 0;
     b || (b = 100);
     if (n && (!this.db || !d)) {
       n.constructor !== Array && (n = [n]);
-      var r = [];
-      for (let y = 0, v; y < n.length; y++) {
-        v = n[y];
-        if (G(v)) {
+      var t = [];
+      for (let y = 0, w; y < n.length; y++) {
+        w = n[y];
+        if (G(w)) {
           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 x = 0; x < w.length; x++) {
-              r.push(v.field, w[x]);
+        if (w.field && w.tag) {
+          var v = w.tag;
+          if (v.constructor === Array) {
+            for (var x = 0; x < v.length; x++) {
+              t.push(w.field, v[x]);
             }
           } else {
-            r.push(v.field, w);
+            t.push(w.field, v);
           }
         } else {
-          w = Object.keys(v);
-          for (let A = 0, I, D; A < w.length; A++) {
-            if (I = w[A], D = v[I], D.constructor === Array) {
-              for (x = 0; x < D.length; x++) {
-                r.push(I, D[x]);
+          v = Object.keys(w);
+          for (let A = 0, I, C; A < v.length; A++) {
+            if (I = v[A], C = w[I], C.constructor === Array) {
+              for (x = 0; x < C.length; x++) {
+                t.push(I, C[x]);
               }
             } else {
-              r.push(I, D);
+              t.push(I, C);
             }
           }
         }
       }
-      if (!r.length) {
+      if (!t.length) {
         throw Error("Your tag definition within the search options is probably wrong. No valid tags found.");
       }
-      n = r;
+      n = t;
       if (!a) {
-        t = [];
-        if (r.length) {
-          for (n = 0; n < r.length; n += 2) {
+        r = [];
+        if (t.length) {
+          for (n = 0; n < t.length; n += 2) {
             if (this.db) {
-              d = this.index.get(r[n]);
+              d = this.index.get(t[n]);
               if (!d) {
-                console.warn("Tag '" + r[n] + ":" + r[n + 1] + "' will be skipped because there is no field '" + r[n] + "'.");
+                console.warn("Tag '" + t[n] + ":" + t[n + 1] + "' will be skipped because there is no field '" + t[n] + "'.");
                 continue;
               }
-              t.push(d = d.db.tag(r[n + 1], b, l, p));
+              r.push(d = d.db.tag(t[n + 1], b, l, p));
             } else {
-              d = Ea.call(this, r[n], r[n + 1], b, l, p);
+              d = Ea.call(this, t[n], t[n + 1], b, l, p);
             }
-            e.push({field:r[n], tag:r[n + 1], result:d});
+            e.push({field:t[n], tag:t[n + 1], result:d});
           }
         }
-        return t.length ? Promise.all(t).then(function(y) {
-          for (let v = 0; v < y.length; v++) {
-            e[v].result = y[v];
+        return r.length ? Promise.all(r).then(function(y) {
+          for (let w = 0; w < y.length; w++) {
+            e[w].result = y[w];
           }
           return e;
         }) : e;
       }
     }
-    G(h) && (h = [h]);
+    G(k) && (k = [k]);
   }
-  h || (h = this.field);
-  r = !d && (this.worker || this.db) && [];
-  let B;
-  for (let y = 0, v, A, I; y < h.length; y++) {
-    A = h[y];
+  k || (k = this.field);
+  t = !d && (this.worker || this.db) && [];
+  let E;
+  for (let y = 0, w, A, I; y < k.length; y++) {
+    A = k[y];
     if (this.db && this.tag && !this.D[y]) {
       continue;
     }
-    let D;
-    G(A) || (D = A, A = D.field, a = D.query || a, b = D.limit || b, l = D.offset || l, t = D.suggest || t, p = this.store && (D.enrich || p));
+    let C;
+    G(A) || (C = A, A = C.field, a = C.query || a, b = C.limit || b, l = C.offset || l, r = C.suggest || r, p = this.store && (C.enrich || p));
     if (d) {
-      v = d[y];
+      w = d[y];
     } else {
-      if (w = D || c, x = this.index.get(A), n && (this.db && (w.tag = n, B = x.db.support_tag_search, w.field = h), B || (w.enrich = !1)), r) {
-        r[y] = x.search(a, b, w);
-        w && p && (w.enrich = p);
+      if (v = C || c, x = this.index.get(A), n && (this.db && (v.tag = n, E = x.db.support_tag_search, v.field = k), E || (v.enrich = !1)), t) {
+        t[y] = x.search(a, b, v);
+        v && p && (v.enrich = p);
         continue;
       } else {
-        v = x.search(a, b, w), w && p && (w.enrich = p);
+        w = x.search(a, b, v), v && p && (v.enrich = p);
       }
     }
-    I = v && v.length;
+    I = w && w.length;
     if (n && I) {
-      w = [];
+      v = [];
       x = 0;
       if (this.db && d) {
-        if (!B) {
-          for (let E = h.length; E < d.length; E++) {
-            let F = d[E];
+        if (!E) {
+          for (let D = k.length; D < d.length; D++) {
+            let F = d[D];
             if (F && F.length) {
-              x++, w.push(F);
-            } else if (!t) {
+              x++, v.push(F);
+            } else if (!r) {
               return e;
             }
           }
         }
       } else {
-        for (let E = 0, F, jb; E < n.length; E += 2) {
-          F = this.tag.get(n[E]);
+        for (let D = 0, F, jb; D < n.length; D += 2) {
+          F = this.tag.get(n[D]);
           if (!F) {
-            if (console.warn("Tag '" + n[E] + ":" + n[E + 1] + "' will be skipped because there is no field '" + n[E] + "'."), t) {
+            if (console.warn("Tag '" + n[D] + ":" + n[D + 1] + "' will be skipped because there is no field '" + n[D] + "'."), r) {
               continue;
             } else {
               return e;
             }
           }
-          if (jb = (F = F && F.get(n[E + 1])) && F.length) {
-            x++, w.push(F);
-          } else if (!t) {
+          if (jb = (F = F && F.get(n[D + 1])) && F.length) {
+            x++, v.push(F);
+          } else if (!r) {
             return e;
           }
         }
       }
       if (x) {
-        v = Da(v, w);
-        I = v.length;
-        if (!I && !t) {
+        w = Da(w, v);
+        I = w.length;
+        if (!I && !r) {
           return e;
         }
         x--;
       }
     }
     if (I) {
-      f[m] = A, e.push(v), m++;
-    } else if (1 === h.length) {
+      f[m] = A, e.push(w), m++;
+    } else if (1 === k.length) {
       return e;
     }
   }
-  if (r) {
-    if (this.db && n && n.length && !B) {
+  if (t) {
+    if (this.db && n && n.length && !E) {
       for (p = 0; p < n.length; p += 2) {
         d = this.index.get(n[p]);
         if (!d) {
-          if (console.warn("Tag '" + n[p] + ":" + n[p + 1] + "' was not found because there is no field '" + n[p] + "'."), t) {
+          if (console.warn("Tag '" + n[p] + ":" + n[p + 1] + "' was not found because there is no field '" + n[p] + "'."), r) {
             continue;
           } else {
             return e;
           }
         }
-        r.push(d.db.tag(n[p + 1], b, l, !1));
+        t.push(d.db.tag(n[p + 1], b, l, !1));
       }
     }
     const y = this;
-    return Promise.all(r).then(function(v) {
-      return v.length ? y.search(a, b, c, v) : v;
+    return Promise.all(t).then(function(w) {
+      return w.length ? y.search(a, b, c, w) : w;
     });
   }
   if (!m) {
@@ -1017,56 +1017,56 @@ function Da(a, b) {
   if (g && (!p || !this.store)) {
     return e[0];
   }
-  r = [];
-  for (let y = 0, v; y < f.length; y++) {
-    v = e[y];
-    p && v.length && !v[0].doc && (this.db ? r.push(v = this.index.get(this.field[0]).db.enrich(v)) : v.length && (v = Fa.call(this, v)));
+  t = [];
+  for (let y = 0, w; y < f.length; y++) {
+    w = e[y];
+    p && w.length && !w[0].doc && (this.db ? t.push(w = this.index.get(this.field[0]).db.enrich(w)) : w.length && (w = Fa.call(this, w)));
     if (g) {
-      return v;
+      return w;
     }
-    e[y] = {field:f[y], result:v};
+    e[y] = {field:f[y], result:w};
   }
-  if (p && this.db && r.length) {
+  if (p && this.db && t.length) {
     const y = this;
-    return Promise.all(r).then(function(v) {
-      for (let A = 0; A < v.length; A++) {
-        e[A].result = v[A];
+    return Promise.all(t).then(function(w) {
+      for (let A = 0; A < w.length; A++) {
+        e[A].result = w[A];
       }
-      return k ? Ga(e, b) : q ? Ha(e, a, y.index, y.field, y.D, q) : e;
+      return h ? Ga(e, b) : q ? Ha(e, a, y.index, y.field, y.D, q) : e;
     });
   }
-  return k ? Ga(e, b) : q ? Ha(e, a, this.index, this.field, this.D, q) : e;
+  return h ? Ga(e, b) : q ? Ha(e, a, this.index, this.field, this.D, q) : e;
 };
 function Ha(a, b, c, d, e, f) {
-  let g, k, h;
-  for (let m = 0, q, n, p, t, r; m < a.length; m++) {
+  let g, h, k;
+  for (let m = 0, q, n, p, r, t; m < a.length; m++) {
     q = a[m].result;
     n = a[m].field;
-    t = c.get(n);
-    p = t.encoder;
-    h = t.tokenize;
-    r = e[d.indexOf(n)];
-    p !== g && (g = p, k = g.encode(b));
-    for (let w = 0; w < q.length; w++) {
+    r = c.get(n);
+    p = r.encoder;
+    k = r.tokenize;
+    t = e[d.indexOf(n)];
+    p !== g && (g = p, h = g.encode(b));
+    for (let v = 0; v < q.length; v++) {
       let x = "";
-      var l = J(q[w].doc, r);
-      let B = g.encode(l);
+      var l = J(q[v].doc, t);
+      let E = g.encode(l);
       l = l.split(g.split);
-      for (let y = 0, v, A; y < B.length; y++) {
-        v = B[y];
+      for (let y = 0, w, A; y < E.length; y++) {
+        w = E[y];
         A = l[y];
         let I;
-        for (let D = 0, E; D < k.length; D++) {
-          if (E = k[D], "strict" === h) {
-            if (v === E) {
+        for (let C = 0, D; C < h.length; C++) {
+          if (D = h[C], "strict" === k) {
+            if (w === D) {
               x += (x ? " " : "") + f.replace("$1", A);
               I = !0;
               break;
             }
           } else {
-            const F = v.indexOf(E);
+            const F = w.indexOf(D);
             if (-1 < F) {
-              x += (x ? " " : "") + A.substring(0, F) + f.replace("$1", A.substring(F, E.length)) + A.substring(F + E.length);
+              x += (x ? " " : "") + A.substring(0, F) + f.replace("$1", A.substring(F, D.length)) + A.substring(F + D.length);
               I = !0;
               break;
             }
@@ -1074,24 +1074,24 @@ function Ha(a, b, c, d, e, f) {
         }
         I || (x += (x ? " " : "") + l[y]);
       }
-      q[w].highlight = x;
+      q[v].highlight = x;
     }
   }
   return a;
 }
 function Ga(a, b) {
-  const c = [], d = C();
+  const c = [], d = B();
   for (let e = 0, f, g; e < a.length; e++) {
     f = a[e];
     g = f.result;
-    for (let k = 0, h, l, m; k < g.length; k++) {
-      if (l = g[k], h = l.id, m = d[h]) {
+    for (let h = 0, k, l, m; h < g.length; h++) {
+      if (l = g[h], k = l.id, m = d[k]) {
         m.push(f.field);
       } else {
         if (c.length === b) {
           return c;
         }
-        l.field = d[h] = [f.field];
+        l.field = d[k] = [f.field];
         c.push(l);
       }
     }
@@ -1163,9 +1163,9 @@ function Fa(a) {
       const e = this;
       return Promise.all(a).then(function(f) {
         let g = 0;
-        for (const k of e.index.entries()) {
-          const h = k[0];
-          k[1].then && e.index.set(h, f[g++]);
+        for (const h of e.index.entries()) {
+          const k = h[0];
+          h[1].then && e.index.set(k, f[g++]);
         }
         return e;
       });
@@ -1192,9 +1192,9 @@ u.mount = function(a) {
   for (let e = 0, f, g; e < b.length; e++) {
     d.field = g = b[e];
     f = this.index.get(g);
-    const k = new a.constructor(a.id, d);
-    k.id = a.id;
-    c[e] = k.mount(f);
+    const h = new a.constructor(a.id, d);
+    h.id = a.id;
+    c[e] = h.mount(f);
     f.document = !0;
     e ? f.bypass = !0 : f.store = this.store;
   }
@@ -1225,8 +1225,8 @@ function Ja(a, b) {
     G(f) || (g = f, f = f.field);
     g = H(g) ? Object.assign({}, a, g) : a;
     if (this.worker) {
-      const k = new N(g);
-      c.set(f, k);
+      const h = new N(g);
+      c.set(f, h);
     }
     this.worker || c.set(f, new M(g, this.reg));
     g.custom ? this.D[e] = g.custom : (this.D[e] = Ia(f, this.K), g.filter && ("string" === typeof this.D[e] && (this.D[e] = new String(this.D[e])), this.D[e].J = g.filter));
@@ -1312,9 +1312,9 @@ u.export = function(a, b, c = 0, d = 0) {
   if (c < this.field.length) {
     const g = this.field[c];
     if ((b = this.index.get(g).export(a, g, c, d = 1)) && b.then) {
-      const k = this;
+      const h = this;
       return b.then(function() {
-        return k.export(a, g, c + 1);
+        return h.export(a, g, c + 1);
       });
     }
     return this.export(a, g, c + 1);
@@ -1375,6 +1375,7 @@ u.import = function(a, b) {
 oa(T.prototype);
 function Ka(a, b, c) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new U());
   let d = this.cache.get(a);
   if (!d) {
     d = this.search(a, b, c);
@@ -1438,7 +1439,7 @@ var Ta = {LatinExact:{normalize:!1, dedupe:!1}, LatinDefault:La, LatinSimple:{no
   return ("" + a).replace(Sa, " ");
 }}};
 const Ua = {memory:{resolution:1}, performance:{resolution:6, fastupdate:!0, context:{depth:1, resolution:3}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:9}}};
-C();
+B();
 M.prototype.add = function(a, b, c, d) {
   if (b && (a || 0 === a)) {
     if (!d && !c && this.reg.has(a)) {
@@ -1446,45 +1447,45 @@ M.prototype.add = function(a, b, c, d) {
     }
     b = this.encoder.encode(b);
     if (d = b.length) {
-      const l = C(), m = C(), q = this.depth, n = this.resolution;
+      const l = B(), m = B(), q = this.depth, n = this.resolution;
       for (let p = 0; p < d; p++) {
-        let t = b[this.rtl ? d - 1 - p : p];
-        var e = t.length;
-        if (e && (q || !m[t])) {
-          var f = this.score ? this.score(b, t, p, null, 0) : Va(n, d, p), g = "";
+        let r = b[this.rtl ? d - 1 - p : p];
+        var e = r.length;
+        if (e && (q || !m[r])) {
+          var f = this.score ? this.score(b, r, p, null, 0) : Va(n, d, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < e) {
                 for (f = 0; f < e; f++) {
-                  for (var k = e; k > f; k--) {
-                    g = t.substring(f, k);
-                    var h = this.score ? this.score(b, t, p, g, f) : Va(n, d, p, e, f);
-                    V(this, m, g, h, a, c);
+                  for (var h = e; h > f; h--) {
+                    g = r.substring(f, h);
+                    var k = this.score ? this.score(b, r, p, g, f) : Va(n, d, p, e, f);
+                    V(this, m, g, k, a, c);
                   }
                 }
                 break;
               }
             case "reverse":
               if (1 < e) {
-                for (k = e - 1; 0 < k; k--) {
-                  g = t[k] + g, h = this.score ? this.score(b, t, p, g, k) : Va(n, d, p, e, k), V(this, m, g, h, a, c);
+                for (h = e - 1; 0 < h; h--) {
+                  g = r[h] + g, k = this.score ? this.score(b, r, p, g, h) : Va(n, d, p, e, h), V(this, m, g, k, a, c);
                 }
                 g = "";
               }
             case "forward":
               if (1 < e) {
-                for (k = 0; k < e; k++) {
-                  g += t[k], V(this, m, g, f, a, c);
+                for (h = 0; h < e; h++) {
+                  g += r[h], V(this, m, g, f, a, c);
                 }
                 break;
               }
             default:
-              if (V(this, m, t, f, a, c), q && 1 < d && p < d - 1) {
-                for (e = C(), g = this.R, f = t, k = Math.min(q + 1, d - p), e[f] = 1, h = 1; h < k; h++) {
-                  if ((t = b[this.rtl ? d - 1 - p - h : p + h]) && !e[t]) {
-                    e[t] = 1;
-                    const r = this.score ? this.score(b, f, p, t, h) : Va(g + (d / 2 > g ? 0 : 1), d, p, k - 1, h - 1), w = this.bidirectional && t > f;
-                    V(this, l, w ? f : t, r, a, c, w ? t : f);
+              if (V(this, m, r, f, a, c), q && 1 < d && p < d - 1) {
+                for (e = B(), g = this.R, f = r, h = Math.min(q + 1, d - p), e[f] = 1, k = 1; k < h; k++) {
+                  if ((r = b[this.rtl ? d - 1 - p - k : p + k]) && !e[r]) {
+                    e[r] = 1;
+                    const t = this.score ? this.score(b, f, p, r, k) : Va(g + (d / 2 > g ? 0 : 1), d, p, h - 1, k - 1), v = this.bidirectional && r > f;
+                    V(this, l, v ? f : r, t, a, c, v ? r : f);
                   }
                 }
               }
@@ -1500,20 +1501,20 @@ M.prototype.add = function(a, b, c, d) {
   return this;
 };
 function V(a, b, c, d, e, f, g) {
-  let k = g ? a.ctx : a.map, h;
-  if (!b[c] || g && !(h = b[c])[g]) {
-    if (g ? (b = h || (b[c] = C()), b[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : b[c] = 1, (h = k.get(c)) ? k = h : k.set(c, k = h = []), k = k[d] || (k[d] = []), !f || !k.includes(e)) {
-      if (k.length === 2 ** 31 - 1) {
-        b = new Q(k);
+  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[d] || (h[d] = []), !f || !h.includes(e)) {
+      if (h.length === 2 ** 31 - 1) {
+        b = new Q(h);
         if (a.fastupdate) {
           for (let l of a.reg.values()) {
-            l.includes(k) && (l[l.indexOf(k)] = b);
+            l.includes(h) && (l[l.indexOf(h)] = b);
           }
         }
-        h[d] = k = b;
+        k[d] = h = b;
       }
-      k.push(e);
-      a.fastupdate && ((d = a.reg.get(e)) ? d.push(k) : a.reg.set(e, [k]));
+      h.push(e);
+      a.fastupdate && ((d = a.reg.get(e)) ? d.push(h) : a.reg.set(e, [h]));
     }
   }
 }
@@ -1525,24 +1526,24 @@ function Va(a, b, c, d, e) {
     return a = a[0], a = c || a.length > b ? b ? a.slice(c, c + b) : a.slice(c) : a, d ? Xa(a) : a;
   }
   let e = [];
-  for (let f = 0, g, k; f < a.length; f++) {
-    if ((g = a[f]) && (k = g.length)) {
+  for (let f = 0, g, h; f < a.length; f++) {
+    if ((g = a[f]) && (h = g.length)) {
       if (c) {
-        if (c >= k) {
-          c -= k;
+        if (c >= h) {
+          c -= h;
           continue;
         }
-        c < k && (g = b ? g.slice(c, c + b) : g.slice(c), k = g.length, c = 0);
+        c < h && (g = b ? g.slice(c, c + b) : g.slice(c), h = g.length, c = 0);
       }
       if (e.length) {
-        k > b && (g = g.slice(0, b), k = g.length);
+        h > b && (g = g.slice(0, b), h = g.length);
       } else {
-        if (k >= b) {
-          return k > b && (g = g.slice(0, b)), d ? Xa(g) : g;
+        if (h >= b) {
+          return h > b && (g = g.slice(0, b)), d ? Xa(g) : g;
         }
       }
       e.push(g);
-      b -= k;
+      b -= h;
       if (!b) {
         break;
       }
@@ -1574,13 +1575,13 @@ function Xa(a) {
   }
   let d = [];
   c = [];
-  let e = 0, f = 0, g, k;
-  for (let h = 0, l; h < b.length; h++) {
-    if (l = b[h]) {
+  let e = 0, f = 0, g, h;
+  for (let k = 0, l; k < b.length; k++) {
+    if (l = b[k]) {
       e = l.limit || 0;
       f = l.offset || 0;
       g = l.enrich;
-      k = l.resolve;
+      h = l.resolve;
       let m;
       if (l.constructor === X) {
         m = l.result;
@@ -1597,19 +1598,19 @@ function Xa(a) {
       } else {
         continue;
       }
-      d[h] = m;
+      d[k] = m;
       m.then && c.push(m);
     }
   }
   if (c.length) {
     return Promise.all(c).then(function() {
       a.result.length && (d = d.concat([a.result]));
-      a.result = Ya(d, e, f, g, k, a.F);
-      return k ? a.result : a;
+      a.result = Ya(d, e, f, g, h, a.F);
+      return h ? a.result : a;
     });
   }
-  d.length && (this.result.length && (d = d.concat([this.result])), this.result = Ya(d, e, f, g, k, this.F));
-  return k ? this.result : this;
+  d.length && (this.result.length && (d = d.concat([this.result])), this.result = Ya(d, e, f, g, h, this.F));
+  return h ? this.result : this;
 };
 function Ya(a, b, c, d, e, f) {
   if (!a.length) {
@@ -1633,13 +1634,13 @@ function Ya(a, b, c, d, e, f) {
     }
     let d = [];
     a = [];
-    let e = 0, f = 0, g, k;
-    for (let h = 0, l; h < c.length; h++) {
-      if (l = c[h]) {
+    let e = 0, f = 0, g, h;
+    for (let k = 0, l; k < c.length; k++) {
+      if (l = c[k]) {
         e = l.limit || 0;
         f = l.offset || 0;
         g = l.resolve;
-        k = l.suggest;
+        h = l.suggest;
         let m;
         if (l.constructor === X) {
           m = l.result;
@@ -1656,7 +1657,7 @@ function Ya(a, b, c, d, e, f) {
         } else {
           continue;
         }
-        d[h] = m;
+        d[k] = m;
         m.then && a.push(m);
       }
     }
@@ -1666,12 +1667,12 @@ function Ya(a, b, c, d, e, f) {
     if (a.length) {
       return Promise.all(a).then(function() {
         d = [b.result].concat(d);
-        b.result = Za(d, e, f, g, b.F, k);
+        b.result = Za(d, e, f, g, b.F, h);
         return g ? b.result : b;
       });
     }
     d = [this.result].concat(d);
-    this.result = Za(d, e, f, g, this.F, k);
+    this.result = Za(d, e, f, g, this.F, h);
     return g ? this.result : this;
   }
   return this;
@@ -1681,9 +1682,9 @@ function Za(a, b, c, d, e, f) {
     return [];
   }
   let g = [];
-  C();
-  let k = ca(a);
-  return k ? Ba(a, k, b, c, f, e, d) : g;
+  B();
+  let h = ca(a);
+  return h ? Ba(a, h, b, c, f, e, d) : g;
 }
 ;X.prototype.xor = function() {
   const a = this;
@@ -1699,13 +1700,13 @@ function Za(a, b, c, d, e, f) {
   }
   let d = [];
   c = [];
-  let e = 0, f = 0, g, k;
-  for (let h = 0, l; h < b.length; h++) {
-    if (l = b[h]) {
+  let e = 0, f = 0, g, h;
+  for (let k = 0, l; k < b.length; k++) {
+    if (l = b[k]) {
       e = l.limit || 0;
       f = l.offset || 0;
       g = l.enrich;
-      k = l.resolve;
+      h = l.resolve;
       let m;
       if (l.constructor === X) {
         m = l.result;
@@ -1722,19 +1723,19 @@ function Za(a, b, c, d, e, f) {
       } else {
         continue;
       }
-      d[h] = m;
+      d[k] = m;
       m.then && c.push(m);
     }
   }
   if (c.length) {
     return Promise.all(c).then(function() {
       a.result.length && (d = [a.result].concat(d));
-      a.result = $a(d, e, f, g, !k, a.F);
-      return k ? a.result : a;
+      a.result = $a(d, e, f, g, !h, a.F);
+      return h ? a.result : a;
     });
   }
-  d.length && (this.result.length && (d = [this.result].concat(d)), this.result = $a(d, e, f, g, !k, a.F));
-  return k ? this.result : this;
+  d.length && (this.result.length && (d = [this.result].concat(d)), this.result = $a(d, e, f, g, !h, a.F));
+  return h ? this.result : this;
 };
 function $a(a, b, c, d, e, f) {
   if (!a.length) {
@@ -1744,13 +1745,13 @@ function $a(a, b, c, d, e, f) {
     return e ? W(a[0], b, c, d) : a[0];
   }
   d = [];
-  const g = C();
-  let k = 0;
-  for (let h = 0, l; h < a.length; h++) {
-    if (l = a[h]) {
+  const g = B();
+  let h = 0;
+  for (let k = 0, l; k < a.length; k++) {
+    if (l = a[k]) {
       for (let m = 0, q; m < l.length; m++) {
         if (q = l[m]) {
-          k < q.length && (k = q.length);
+          h < q.length && (h = q.length);
           for (let n = 0, p; n < q.length; n++) {
             p = q[n], g[p] ? g[p]++ : g[p] = 1;
           }
@@ -1758,23 +1759,23 @@ function $a(a, b, c, d, e, f) {
       }
     }
   }
-  for (let h = 0, l, m = 0; h < k; h++) {
+  for (let k = 0, l, m = 0; k < h; k++) {
     for (let q = 0, n; q < a.length; q++) {
       if (n = a[q]) {
-        if (l = n[h]) {
-          for (let p = 0, t; p < l.length; p++) {
-            if (t = l[p], 1 === g[t]) {
+        if (l = n[k]) {
+          for (let p = 0, r; p < l.length; p++) {
+            if (r = l[p], 1 === g[r]) {
               if (c) {
                 c--;
               } else {
                 if (e) {
-                  if (d.push(t), d.length === b) {
+                  if (d.push(r), d.length === b) {
                     return d;
                   }
                 } else {
-                  const r = h + (q ? f : 0);
-                  d[r] || (d[r] = []);
-                  d[r].push(t);
+                  const t = k + (q ? f : 0);
+                  d[t] || (d[t] = []);
+                  d[t].push(r);
                   if (++m === b) {
                     return d;
                   }
@@ -1803,28 +1804,28 @@ function $a(a, b, c, d, e, f) {
   let d = [];
   c = [];
   let e = 0, f = 0, g;
-  for (let k = 0, h; k < b.length; k++) {
-    if (h = b[k]) {
-      e = h.limit || 0;
-      f = h.offset || 0;
-      g = h.resolve;
+  for (let h = 0, k; h < b.length; h++) {
+    if (k = b[h]) {
+      e = k.limit || 0;
+      f = k.offset || 0;
+      g = k.resolve;
       let l;
-      if (h.constructor === X) {
-        l = h.result;
-      } else if (h.constructor === Array) {
-        l = h;
-      } else if (h.index) {
-        h.resolve = !1, l = h.index.search(h).result;
-      } else if (h.or) {
-        l = this.or(h.or);
-      } else if (h.and) {
-        l = this.and(h.and);
-      } else if (h.xor) {
-        l = this.xor(h.xor);
+      if (k.constructor === X) {
+        l = k.result;
+      } else if (k.constructor === Array) {
+        l = k;
+      } else if (k.index) {
+        k.resolve = !1, l = k.index.search(k).result;
+      } else if (k.or) {
+        l = this.or(k.or);
+      } else if (k.and) {
+        l = this.and(k.and);
+      } else if (k.xor) {
+        l = this.xor(k.xor);
       } else {
         continue;
       }
-      d[k] = l;
+      d[h] = l;
       l.then && c.push(l);
     }
   }
@@ -1843,10 +1844,10 @@ function ab(a, b, c, d) {
   }
   const e = [];
   a = new Set(a.flat().flat());
-  for (let f = 0, g, k = 0; f < this.result.length; f++) {
+  for (let f = 0, g, h = 0; f < this.result.length; f++) {
     if (g = this.result[f]) {
-      for (let h = 0, l; h < g.length; h++) {
-        if (l = g[h], !a.has(l)) {
+      for (let k = 0, l; k < g.length; k++) {
+        if (l = g[k], !a.has(l)) {
           if (c) {
             c--;
           } else {
@@ -1855,7 +1856,7 @@ function ab(a, b, c, d) {
                 return e;
               }
             } else {
-              if (e[f] || (e[f] = []), e[f].push(l), ++k === b) {
+              if (e[f] || (e[f] = []), e[f].push(l), ++h === b) {
                 return e;
               }
             }
@@ -1920,106 +1921,120 @@ X.prototype.resolve = function(a, b, c) {
 let bb = 1;
 M.prototype.search = function(a, b, c) {
   c || (!b && H(a) ? (c = a, a = "") : H(b) && (c = b, b = 0));
-  let d = [], e, f, g, k = 0, h, l, m, q, n;
-  c ? (a = c.query || a, b = c.limit || b, k = c.offset || 0, f = c.context, g = c.suggest, (h = bb && !1 !== c.resolve) || (bb = 0), l = h && c.enrich, q = c.boost, n = c.resolution, m = this.db && c.tag) : h = this.resolve || bb;
+  let d = [], e;
+  let f, g = 0, h, k, l, m, q;
+  if (c) {
+    a = c.query || a;
+    b = c.limit || b;
+    g = c.offset || 0;
+    var n = c.context;
+    f = c.suggest;
+    (h = bb && !1 !== c.resolve) || (bb = 0);
+    k = h && c.enrich;
+    m = c.boost;
+    q = c.resolution;
+    l = this.db && c.tag;
+  } else {
+    h = this.resolve || bb;
+  }
   let p = this.encoder.encode(a);
   e = p.length;
   b || !h || (b = 100);
   if (1 === e) {
-    return cb.call(this, p[0], "", b, k, h, l, m);
+    return cb.call(this, p[0], "", b, g, h, k, l);
   }
-  f = this.depth && !1 !== f;
-  if (2 === e && f && !g) {
-    return cb.call(this, p[0], p[1], b, k, h, l, m);
+  n = this.depth && !1 !== n;
+  if (2 === e && n && !f) {
+    return cb.call(this, p[0], p[1], b, g, h, k, l);
   }
-  let t = c = 0;
+  c = a = 0;
   if (1 < e) {
-    const x = C(), B = [];
-    for (let y = 0, v; y < e; y++) {
-      if ((v = p[y]) && !x[v]) {
-        if (g || this.db || Y(this, v)) {
-          B.push(v), x[v] = 1;
+    const v = B(), x = [];
+    for (let E = 0, y; E < e; E++) {
+      if ((y = p[E]) && !v[y]) {
+        if (f || this.db || Y(this, y)) {
+          x.push(y), v[y] = 1;
         } else {
           return h ? d : new X(d);
         }
-        const A = v.length;
-        c = Math.max(c, A);
-        t = t ? Math.min(t, A) : A;
+        const w = y.length;
+        a = Math.max(a, w);
+        c = c ? Math.min(c, w) : w;
       }
     }
-    p = B;
-    e = a.length;
+    p = x;
+    e = p.length;
   }
   if (!e) {
     return h ? d : new X(d);
   }
-  let r = 0, w;
+  let r = 0, t;
   if (1 === e) {
-    return cb.call(this, p[0], "", b, k, h, l, m);
+    return cb.call(this, p[0], "", b, g, h, k, l);
   }
-  if (2 === e && f && !g) {
-    return cb.call(this, p[0], p[1], b, k, h, l, m);
+  if (2 === e && n && !f) {
+    return cb.call(this, p[0], p[1], b, g, h, k, l);
   }
-  1 < e && (f ? (w = p[0], r = 1) : 9 < c && 3 < c / t && p.sort(aa));
-  n || 0 === n || (n = this.resolution);
+  1 < e && (n ? (t = p[0], r = 1) : 9 < a && 3 < a / c && p.sort(aa));
+  q || 0 === q || (q = this.resolution);
   if (this.db) {
-    if (this.db.search && (a = this.db.search(this, p, b, k, g, h, l, m), !1 !== a)) {
-      return a;
+    if (this.db.search && (n = this.db.search(this, p, b, g, f, h, k, l), !1 !== n)) {
+      return n;
     }
-    const x = this;
+    const v = this;
     return async function() {
-      for (let B, y; r < e; r++) {
-        y = p[r];
-        w ? (B = await Y(x, y, w, 0, 0, !1, !1), B = db(B, d, g, x.R), g && !1 === B && d.length || (w = y)) : (B = await Y(x, y, "", 0, 0, !1, !1), B = db(B, d, g, n));
-        if (B) {
-          return B;
+      for (let x, E; r < e; r++) {
+        E = p[r];
+        t ? (x = await Y(v, E, t, 0, 0, !1, !1), x = db(x, d, f, v.R), f && !1 === x && d.length || (t = E)) : (x = await Y(v, E, "", 0, 0, !1, !1), x = db(x, d, f, q));
+        if (x) {
+          return x;
         }
-        if (g && r === e - 1) {
-          let v = d.length;
-          if (!v) {
-            if (w) {
-              w = "";
+        if (f && r === e - 1) {
+          let y = d.length;
+          if (!y) {
+            if (t) {
+              t = "";
               r = -1;
               continue;
             }
             return d;
           }
-          if (1 === v) {
-            return h ? W(d[0], b, k) : new X(d[0]);
+          if (1 === y) {
+            return h ? W(d[0], b, g) : new X(d[0]);
           }
         }
       }
-      return h ? Ba(d, n, b, k, g, q, h) : new X(d[0]);
+      return h ? Ba(d, q, b, g, f, m, h) : new X(d[0]);
     }();
   }
-  for (let x, B; r < e; r++) {
-    B = p[r];
-    w ? (x = Y(this, B, w, 0, 0, !1, !1), x = db(x, d, g, this.R), g && !1 === x && d.length || (w = B)) : (x = Y(this, B, "", 0, 0, !1, !1), x = db(x, d, g, n));
-    if (x) {
-      return x;
+  for (let v, x; r < e; r++) {
+    x = p[r];
+    t ? (v = Y(this, x, t, 0, 0, !1, !1), v = db(v, d, f, this.R), f && !1 === v && d.length || (t = x)) : (v = Y(this, x, "", 0, 0, !1, !1), v = db(v, d, f, q));
+    if (v) {
+      return v;
     }
-    if (g && r === e - 1) {
-      a = d.length;
-      if (!a) {
-        if (w) {
-          w = "";
+    if (f && r === e - 1) {
+      n = d.length;
+      if (!n) {
+        if (t) {
+          t = "";
           r = -1;
           continue;
         }
         return d;
       }
-      if (1 === a) {
-        return h ? W(d[0], b, k) : new X(d[0]);
+      if (1 === n) {
+        return h ? W(d[0], b, g) : new X(d[0]);
       }
     }
   }
-  d = Ba(d, n, b, k, g, q, h);
+  d = Ba(d, q, b, g, f, m, h);
   return h ? d : new X(d);
 };
 function cb(a, b, c, d, e, f, g) {
   a = Y(this, a, b, c, d, e, f, g);
-  return this.db ? a.then(function(k) {
-    return e ? k : k && k.length ? e ? W(k, c, d) : new X(k) : e ? [] : new X([]);
+  return this.db ? a.then(function(h) {
+    return e ? h : h && h.length ? e ? W(h, c, d) : new X(h) : e ? [] : new X([]);
   }) : a && a.length ? e ? W(a, c, d) : new X(a) : e ? [] : new X([]);
 }
 function db(a, b, c, d) {
@@ -2036,13 +2051,13 @@ function db(a, b, c, d) {
   }
   return !c && e;
 }
-function Y(a, b, c, d, e, f, g, k) {
-  let h;
-  c && (h = a.bidirectional && b > c);
+function Y(a, b, c, d, e, f, g, h) {
+  let k;
+  c && (k = a.bidirectional && b > c);
   if (a.db) {
-    return c ? a.db.get(h ? c : b, h ? b : c, d, e, f, g, k) : a.db.get(b, "", d, e, f, g, k);
+    return c ? a.db.get(k ? c : b, k ? b : c, d, e, f, g, h) : a.db.get(b, "", d, e, f, g, h);
   }
-  a = c ? (a = a.ctx.get(h ? b : c)) && a.get(h ? c : b) : a.map.get(b);
+  a = c ? (a = a.ctx.get(k ? b : c)) && a.get(k ? c : b) : a.map.get(b);
   return a;
 }
 ;M.prototype.remove = function(a, b) {
@@ -2233,18 +2248,18 @@ u.serialize = function(a = !0) {
   b = "index.reg=new Set([" + b + "]);";
   d = "";
   for (var e of this.map.entries()) {
-    var f = e[0], g = e[1], k = "";
+    var f = e[0], g = e[1], h = "";
     for (let m = 0, q; m < g.length; m++) {
       q = g[m] || [""];
-      var h = "";
+      var k = "";
       for (var l = 0; l < q.length; l++) {
-        h += (h ? "," : "") + ("string" === c ? '"' + q[l] + '"' : q[l]);
+        k += (k ? "," : "") + ("string" === c ? '"' + q[l] + '"' : q[l]);
       }
-      h = "[" + h + "]";
-      k += (k ? "," : "") + h;
+      k = "[" + k + "]";
+      h += (h ? "," : "") + k;
     }
-    k = '["' + f + '",[' + k + "]]";
-    d += (d ? "," : "") + k;
+    h = '["' + f + '",[' + h + "]]";
+    d += (d ? "," : "") + h;
   }
   d = "index.map=new Map([" + d + "]);";
   e = "";
@@ -2253,20 +2268,20 @@ u.serialize = function(a = !0) {
     g = m[1];
     for (const q of g.entries()) {
       g = q[0];
-      k = q[1];
-      h = "";
-      for (let n = 0, p; n < k.length; n++) {
-        p = k[n] || [""];
+      h = q[1];
+      k = "";
+      for (let n = 0, p; n < h.length; n++) {
+        p = h[n] || [""];
         l = "";
-        for (let t = 0; t < p.length; t++) {
-          l += (l ? "," : "") + ("string" === c ? '"' + p[t] + '"' : p[t]);
+        for (let r = 0; r < p.length; r++) {
+          l += (l ? "," : "") + ("string" === c ? '"' + p[r] + '"' : p[r]);
         }
         l = "[" + l + "]";
-        h += (h ? "," : "") + l;
+        k += (k ? "," : "") + l;
       }
-      h = 'new Map([["' + g + '",[' + h + "]]])";
-      h = '["' + f + '",' + h + "]";
-      e += (e ? "," : "") + h;
+      k = 'new Map([["' + g + '",[' + k + "]]])";
+      k = '["' + f + '",' + k + "]";
+      e += (e ? "," : "") + k;
     }
   }
   e = "index.ctx=new Map([" + e + "]);";
@@ -2339,34 +2354,34 @@ u.clear = function() {
 u.get = function(a, b, c = 0, d = 0, e = !0, f = !1) {
   a = this.db.transaction(b ? "ctx" : "map", "readonly").objectStore(b ? "ctx" : "map").get(b ? b + ":" + a : a);
   const g = this;
-  return Z(a).then(function(k) {
-    let h = [];
-    if (!k || !k.length) {
-      return h;
+  return Z(a).then(function(h) {
+    let k = [];
+    if (!h || !h.length) {
+      return k;
     }
     if (e) {
-      if (!c && !d && 1 === k.length) {
-        return k[0];
+      if (!c && !d && 1 === h.length) {
+        return h[0];
       }
-      for (let l = 0, m; l < k.length; l++) {
-        if ((m = k[l]) && m.length) {
+      for (let l = 0, m; l < h.length; l++) {
+        if ((m = h[l]) && m.length) {
           if (d >= m.length) {
             d -= m.length;
             continue;
           }
           const q = c ? d + Math.min(m.length - d, c) : m.length;
           for (let n = d; n < q; n++) {
-            h.push(m[n]);
+            k.push(m[n]);
           }
           d = 0;
-          if (h.length === c) {
+          if (k.length === c) {
             break;
           }
         }
       }
-      return f ? g.enrich(h) : h;
+      return f ? g.enrich(k) : k;
     }
-    return k;
+    return h;
   });
 };
 u.tag = function(a, b = 0, c = 0, d = !1) {
@@ -2411,15 +2426,15 @@ u.transaction = function(a, b, c) {
   let e = this.db.transaction(a, b);
   this.h[a + ":" + b] = d = e.objectStore(a);
   return new Promise((f, g) => {
-    e.onerror = k => {
+    e.onerror = h => {
       this.h[a + ":" + b] = null;
       e.abort();
       e = d = null;
-      g(k);
+      g(h);
     };
-    e.oncomplete = k => {
+    e.oncomplete = h => {
       e = d = this.h[a + ":" + b] = null;
-      f(k || !0);
+      f(h || !0);
     };
     return c.call(this, d);
   });
@@ -2445,46 +2460,46 @@ u.commit = async function(a, b, c) {
     for (const e of a.map) {
       const f = e[0], g = e[1];
       g.length && (b ? d.put(g, f) : d.get(f).onsuccess = function() {
-        let k = this.result;
-        var h;
-        if (k && k.length) {
-          const l = Math.max(k.length, g.length);
+        let h = this.result;
+        var k;
+        if (h && h.length) {
+          const l = Math.max(h.length, g.length);
           for (let m = 0, q, n; m < l; m++) {
             if ((n = g[m]) && n.length) {
-              if ((q = k[m]) && q.length) {
-                for (h = 0; h < n.length; h++) {
-                  q.push(n[h]);
+              if ((q = h[m]) && q.length) {
+                for (k = 0; k < n.length; k++) {
+                  q.push(n[k]);
                 }
               } else {
-                k[m] = n;
+                h[m] = n;
               }
-              h = 1;
+              k = 1;
             }
           }
         } else {
-          k = g, h = 1;
+          h = g, k = 1;
         }
-        h && d.put(k, f);
+        k && d.put(h, f);
       });
     }
   }), await this.transaction("ctx", "readwrite", function(d) {
     for (const e of a.ctx) {
       const f = e[0], g = e[1];
-      for (const k of g) {
-        const h = k[0], l = k[1];
-        l.length && (b ? d.put(l, f + ":" + h) : d.get(f + ":" + h).onsuccess = function() {
+      for (const h of g) {
+        const k = h[0], l = h[1];
+        l.length && (b ? d.put(l, f + ":" + k) : d.get(f + ":" + k).onsuccess = function() {
           let m = this.result;
           var q;
           if (m && m.length) {
             const n = Math.max(m.length, l.length);
-            for (let p = 0, t, r; p < n; p++) {
-              if ((r = l[p]) && r.length) {
-                if ((t = m[p]) && t.length) {
-                  for (q = 0; q < r.length; q++) {
-                    t.push(r[q]);
+            for (let p = 0, r, t; p < n; p++) {
+              if ((t = l[p]) && t.length) {
+                if ((r = m[p]) && r.length) {
+                  for (q = 0; q < t.length; q++) {
+                    r.push(t[q]);
                   }
                 } else {
-                  m[p] = r;
+                  m[p] = t;
                 }
                 q = 1;
               }
@@ -2492,7 +2507,7 @@ u.commit = async function(a, b, c) {
           } else {
             m = l, q = 1;
           }
-          q && d.put(m, f + ":" + h);
+          q && d.put(m, f + ":" + k);
         });
       }
     }
@@ -2509,9 +2524,9 @@ u.commit = async function(a, b, c) {
     for (const e of a.tag) {
       const f = e[0], g = e[1];
       g.length && (d.get(f).onsuccess = function() {
-        let k = this.result;
-        k = k && k.length ? k.concat(g) : g;
-        d.put(k, f);
+        let h = this.result;
+        h = h && h.length ? h.concat(g) : g;
+        d.put(h, f);
       });
     }
   }), a.map.clear(), a.ctx.clear(), a.tag && a.tag.clear(), a.store && a.store.clear(), a.document || a.reg.clear());
@@ -2519,19 +2534,19 @@ u.commit = async function(a, b, c) {
 function kb(a, b, c) {
   const d = a.value;
   let e, f, g = 0;
-  for (let k = 0, h; k < d.length; k++) {
-    if (h = c ? d : d[k]) {
+  for (let h = 0, k; h < d.length; h++) {
+    if (k = c ? d : d[h]) {
       for (let l = 0, m, q; l < b.length; l++) {
-        if (q = b[l], m = h.indexOf(f ? parseInt(q, 10) : q), 0 > m && !f && "string" === typeof q && !isNaN(q) && (m = h.indexOf(parseInt(q, 10))) && (f = 1), 0 <= m) {
-          if (e = 1, 1 < h.length) {
-            h.splice(m, 1);
+        if (q = b[l], m = k.indexOf(f ? parseInt(q, 10) : q), 0 > m && !f && "string" === typeof q && !isNaN(q) && (m = k.indexOf(parseInt(q, 10))) && (f = 1), 0 <= m) {
+          if (e = 1, 1 < k.length) {
+            k.splice(m, 1);
           } else {
-            d[k] = [];
+            d[h] = [];
             break;
           }
         }
       }
-      g += h.length;
+      g += k.length;
     }
     if (c) {
       break;
diff --git a/dist/flexsearch.bundle.min.js b/dist/flexsearch.bundle.min.js
index e96737f..f32ac4b 100644
--- a/dist/flexsearch.bundle.min.js
+++ b/dist/flexsearch.bundle.min.js
@@ -1,11 +1,11 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle)
+ * FlexSearch.js v0.8.103 (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 u;function z(a,b,c){const d=typeof c,e=typeof a;if("undefined"!==d){if("undefined"!==e){if(c){if("function"===e&&d===e)return function(k){return a(c(k))};b=a.constructor;if(b===c.constructor){if(b===Array)return c.concat(a);if(b===Map){var f=new Map(c);for(var g of a)f.set(g[0],g[1]);return f}if(b===Set){g=new Set(c);for(f of a.values())g.add(f);return g}}}return a}return c}return"undefined"===e?b:a}function C(){return Object.create(null)}function aa(a,b){return b.length-a.length}
+(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var u;function z(a,b,c){const d=typeof c,e=typeof a;if("undefined"!==d){if("undefined"!==e){if(c){if("function"===e&&d===e)return function(h){return a(c(h))};b=a.constructor;if(b===c.constructor){if(b===Array)return c.concat(a);if(b===Map){var f=new Map(c);for(var g of a)f.set(g[0],g[1]);return f}if(b===Set){g=new Set(c);for(f of a.values())g.add(f);return g}}}return a}return c}return"undefined"===e?b:a}function B(){return Object.create(null)}function aa(a,b){return b.length-a.length}
 function F(a){return"string"===typeof a}function G(a){return"object"===typeof a}function ba(a){const b=[];for(const c of a.keys())b.push(c);return b}function J(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 ca(a){let b=0;for(let c=0,d;c<a.length;c++)(d=a[c])&&b<d.length&&(b=d.length);return b};var da=[["\u00aa","a"],["\u00b2","2"],["\u00b3","3"],["\u00b9","1"],["\u00ba","o"],["\u00bc","1\u20444"],["\u00bd","1\u20442"],["\u00be","3\u20444"],["\u00e0","a"],["\u00e1","a"],["\u00e2","a"],["\u00e3","a"],["\u00e4","a"],["\u00e5","a"],["\u00e7","c"],["\u00e8","e"],["\u00e9","e"],["\u00ea","e"],["\u00eb","e"],["\u00ec","i"],["\u00ed","i"],["\u00ee","i"],["\u00ef","i"],["\u00f1","n"],["\u00f2","o"],["\u00f3","o"],["\u00f4","o"],["\u00f5","o"],["\u00f6","o"],["\u00f9","u"],["\u00fa","u"],["\u00fb",
 "u"],["\u00fc","u"],["\u00fd","y"],["\u00ff","y"],["\u0101","a"],["\u0103","a"],["\u0105","a"],["\u0107","c"],["\u0109","c"],["\u010b","c"],["\u010d","c"],["\u010f","d"],["\u0113","e"],["\u0115","e"],["\u0117","e"],["\u0119","e"],["\u011b","e"],["\u011d","g"],["\u011f","g"],["\u0121","g"],["\u0123","g"],["\u0125","h"],["\u0129","i"],["\u012b","i"],["\u012d","i"],["\u012f","i"],["\u0133","ij"],["\u0135","j"],["\u0137","k"],["\u013a","l"],["\u013c","l"],["\u013e","l"],["\u0140","l"],["\u0144","n"],
 ["\u0146","n"],["\u0148","n"],["\u0149","n"],["\u014d","o"],["\u014f","o"],["\u0151","o"],["\u0155","r"],["\u0157","r"],["\u0159","r"],["\u015b","s"],["\u015d","s"],["\u015f","s"],["\u0161","s"],["\u0163","t"],["\u0165","t"],["\u0169","u"],["\u016b","u"],["\u016d","u"],["\u016f","u"],["\u0171","u"],["\u0173","u"],["\u0175","w"],["\u0177","y"],["\u017a","z"],["\u017c","z"],["\u017e","z"],["\u017f","s"],["\u01a1","o"],["\u01b0","u"],["\u01c6","dz"],["\u01c9","lj"],["\u01cc","nj"],["\u01ce","a"],["\u01d0",
@@ -20,66 +20,66 @@ u.addMatcher=function(a,b){if("object"===typeof a)return this.addReplacer(a,b);i
 u.addFilter=function(a){this.filter||(this.filter=new Set);this.filter.add(a);this.cache&&L(this);return this};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&&L(this);return this};u.addReplacer=function(a,b){"string"===typeof a&&(a=new RegExp(a,"g"));this.replacer||(this.replacer=[]);this.replacer.push(a,b||"");this.cache&&L(this);return this};
 function L(a){a.H.clear();a.I.clear()}
 u.encode=function(a){if(this.cache&&a.length<=this.B)if(this.L){if(this.H.has(a))return this.H.get(a)}else this.L=setTimeout(ka,50,this);this.normalize&&(a="function"===typeof this.normalize?this.normalize(a):ja?a.normalize("NFKD").replace(ja,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(ha,"$1 $2").replace(ia,"$1 $2").replace(fa,"$1 "));const b=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let c=[],
-d=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,k;f<d.length;f++){if(!(g=k=d[f]))continue;if(g.length<this.minlength)continue;if(b){c.push(g);continue}if(this.filter&&this.filter.has(g))continue;if(this.cache&&g.length<=this.M)if(this.L){var e=this.I.get(g);if(e||""===e){e&&c.push(e);continue}}else this.L=setTimeout(ka,50,this);let h;this.stemmer&&2<g.length&&(this.O||(this.O=new RegExp("(?!^)("+this.A+")$")),g=g.replace(this.O,l=>this.stemmer.get(l)),h=1);g&&h&&(g.length<this.minlength||
-this.filter&&this.filter.has(g))&&(g="");if(g&&(this.mapper||this.dedupe&&1<g.length)){e="";for(let l=0,m="",q,n;l<g.length;l++)q=g.charAt(l),q===m&&this.dedupe||((n=this.mapper&&this.mapper.get(q))||""===n?n===m&&this.dedupe||!(m=n)||(e+=n):e+=m=q);g=e}this.matcher&&1<g.length&&(this.N||(this.N=new RegExp("("+this.h+")","g")),g=g.replace(this.N,l=>this.matcher.get(l)));if(g&&this.replacer)for(e=0;g&&e<this.replacer.length;e+=2)g=g.replace(this.replacer[e],this.replacer[e+1]);this.cache&&k.length<=
-this.M&&(this.I.set(k,g),this.I.size>this.S&&(this.I.clear(),this.M=this.M/1.1|0));g&&c.push(g)}this.finalize&&(c=this.finalize(c)||c);this.cache&&a.length<=this.B&&(this.H.set(a,c),this.H.size>this.S&&(this.H.clear(),this.B=this.B/1.1|0));return c};function ka(a){a.L=null;a.H.clear();a.I.clear()};async function la(a){a=a.data;var b=self._index;const c=a.args;var d=a.task;switch(d){case "init":d=a.options||{};(b=a.factory)?(Function("return "+b)()(self),self._index=new self.FlexSearch.Index(d),delete self.FlexSearch):self._index=new M(d);postMessage({id:a.id});break;default:a=a.id,b=b[d].apply(b,c),postMessage("search"===d?{id:a,msg:b}:{id:a})}};let ma=0;
-function N(a={}){function b(g){function k(h){h=h.data||h;const l=h.id,m=l&&e.h[l];m&&(m(h.msg),delete e.h[l])}this.worker=g;this.h=C();if(this.worker){d?this.worker.on("message",k):this.worker.onmessage=k;if(a.config)return new Promise(function(h){e.h[++ma]=function(){h(e)};e.worker.postMessage({id:ma,task:"init",factory:c,options:a})});this.worker.postMessage({task:"init",factory:c,options:a});return this}}if(!this||this.constructor!==N)return new N(a);let c="undefined"!==typeof self?self._factory:"undefined"!==
+d=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,h;f<d.length;f++){if(!(g=h=d[f]))continue;if(g.length<this.minlength)continue;if(b){c.push(g);continue}if(this.filter&&this.filter.has(g))continue;if(this.cache&&g.length<=this.M)if(this.L){var e=this.I.get(g);if(e||""===e){e&&c.push(e);continue}}else this.L=setTimeout(ka,50,this);let k;this.stemmer&&2<g.length&&(this.O||(this.O=new RegExp("(?!^)("+this.A+")$")),g=g.replace(this.O,l=>this.stemmer.get(l)),k=1);g&&k&&(g.length<this.minlength||
+this.filter&&this.filter.has(g))&&(g="");if(g&&(this.mapper||this.dedupe&&1<g.length)){e="";for(let l=0,m="",p,n;l<g.length;l++)p=g.charAt(l),p===m&&this.dedupe||((n=this.mapper&&this.mapper.get(p))||""===n?n===m&&this.dedupe||!(m=n)||(e+=n):e+=m=p);g=e}this.matcher&&1<g.length&&(this.N||(this.N=new RegExp("("+this.h+")","g")),g=g.replace(this.N,l=>this.matcher.get(l)));if(g&&this.replacer)for(e=0;g&&e<this.replacer.length;e+=2)g=g.replace(this.replacer[e],this.replacer[e+1]);this.cache&&h.length<=
+this.M&&(this.I.set(h,g),this.I.size>this.S&&(this.I.clear(),this.M=this.M/1.1|0));g&&c.push(g)}this.finalize&&(c=this.finalize(c)||c);this.cache&&a.length<=this.B&&(this.H.set(a,c),this.H.size>this.S&&(this.H.clear(),this.B=this.B/1.1|0));return c};function ka(a){a.L=null;a.H.clear();a.I.clear()};async function la(a){a=a.data;var b=self._index;const c=a.args;var d=a.task;switch(d){case "init":d=a.options||{};(b=a.factory)?(Function("return "+b)()(self),self._index=new self.FlexSearch.Index(d),delete self.FlexSearch):self._index=new M(d);postMessage({id:a.id});break;default:a=a.id,b=b[d].apply(b,c),postMessage("search"===d?{id:a,msg:b}:{id:a})}};let ma=0;
+function N(a={}){function b(g){function h(k){k=k.data||k;const l=k.id,m=l&&e.h[l];m&&(m(k.msg),delete e.h[l])}this.worker=g;this.h=B();if(this.worker){d?this.worker.on("message",h):this.worker.onmessage=h;if(a.config)return new Promise(function(k){e.h[++ma]=function(){k(e)};e.worker.postMessage({id:ma,task:"init",factory:c,options:a})});this.worker.postMessage({task:"init",factory:c,options:a});return this}}if(!this||this.constructor!==N)return new N(a);let c="undefined"!==typeof self?self._factory:"undefined"!==
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+function Y(a,b,c,d,e,f,g,h){let k;c&&(k=a.bidirectional&&b>c);if(a.db)return c?a.db.get(k?c:b,k?b:c,d,e,f,g,h):a.db.get(b,"",d,e,f,g,h);a=c?(a=a.ctx.get(k?b:c))&&a.get(k?c:b):a.map.get(b);return a};M.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 d=0,e;d<c.length;d++){if(e=c[d])if(2>e.length)e.pop();else{const f=e.indexOf(a);f===c.length-1?e.pop():e.splice(f,1)}}else eb(this.map,a),this.depth&&eb(this.ctx,a);b||this.reg.delete(a)}this.db&&(this.commit_task.push({del:a}),this.T&&Wa(this));this.cache&&this.cache.remove(a);return this};
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-u.get=function(a,b,c=0,d=0,e=!0,f=!1){a=this.db.transaction(b?"ctx":"map","readonly").objectStore(b?"ctx":"map").get(b?b+":"+a:a);const g=this;return Z(a).then(function(k){let h=[];if(!k||!k.length)return h;if(e){if(!c&&!d&&1===k.length)return k[0];for(let l=0,m;l<k.length;l++)if((m=k[l])&&m.length){if(d>=m.length){d-=m.length;continue}const q=c?d+Math.min(m.length-d,c):m.length;for(let n=d;n<q;n++)h.push(m[n]);d=0;if(h.length===c)break}return f?g.enrich(h):h}return k})};
+u.get=function(a,b,c=0,d=0,e=!0,f=!1){a=this.db.transaction(b?"ctx":"map","readonly").objectStore(b?"ctx":"map").get(b?b+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(e){if(!c&&!d&&1===h.length)return h[0];for(let l=0,m;l<h.length;l++)if((m=h[l])&&m.length){if(d>=m.length){d-=m.length;continue}const p=c?d+Math.min(m.length-d,c):m.length;for(let n=d;n<p;n++)k.push(m[n]);d=0;if(k.length===c)break}return f?g.enrich(k):k}return h})};
 u.tag=function(a,b=0,c=0,d=!1){a=this.db.transaction("tag","readonly").objectStore("tag").get(a);const e=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 d?e.enrich(f):f})};
 u.enrich=function(a){"object"!==typeof a&&(a=[a]);const b=this.db.transaction("reg","readonly").objectStore("reg"),c=[];for(let d=0;d<a.length;d++)c[d]=Z(b.get(a[d]));return Promise.all(c).then(function(d){for(let e=0;e<d.length;e++)d[e]={id:a[e],doc:d[e]?JSON.parse(d[e]):null};return d})};u.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a)};u.search=null;u.info=function(){};
-u.transaction=function(a,b,c){let d=this.h[a+":"+b];if(d)return c.call(this,d);let e=this.db.transaction(a,b);this.h[a+":"+b]=d=e.objectStore(a);return new Promise((f,g)=>{e.onerror=k=>{this.h[a+":"+b]=null;e.abort();e=d=null;g(k)};e.oncomplete=k=>{e=d=this.h[a+":"+b]=null;f(k||!0)};return c.call(this,d)})};
-u.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let d=a.commit_task;a.commit_task=[];for(let e=0,f;e<d.length;e++)if(f=d[e],f.clear){await this.clear();b=!0;break}else d[e]=f.V;b||(c||(d=d.concat(ba(a.reg))),d.length&&await this.remove(d))}a.reg.size&&(await this.transaction("map","readwrite",function(d){for(const e of a.map){const f=e[0],g=e[1];g.length&&(b?d.put(g,f):d.get(f).onsuccess=function(){let k=this.result;var h;if(k&&k.length){const l=Math.max(k.length,g.length);
-for(let m=0,q,n;m<l;m++)if((n=g[m])&&n.length){if((q=k[m])&&q.length)for(h=0;h<n.length;h++)q.push(n[h]);else k[m]=n;h=1}}else k=g,h=1;h&&d.put(k,f)})}}),await this.transaction("ctx","readwrite",function(d){for(const e of a.ctx){const f=e[0],g=e[1];for(const k of g){const h=k[0],l=k[1];l.length&&(b?d.put(l,f+":"+h):d.get(f+":"+h).onsuccess=function(){let m=this.result;var q;if(m&&m.length){const n=Math.max(m.length,l.length);for(let p=0,r,t;p<n;p++)if((t=l[p])&&t.length){if((r=m[p])&&r.length)for(q=
-0;q<t.length;q++)r.push(t[q]);else m[p]=t;q=1}}else m=l,q=1;q&&d.put(m,f+":"+h)})}}}),a.store?await this.transaction("reg","readwrite",function(d){for(const e of a.store){const f=e[0],g=e[1];d.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(d){for(const e of a.reg.keys())d.put(1,e)}),a.tag&&await this.transaction("tag","readwrite",function(d){for(const e of a.tag){const f=e[0],g=e[1];g.length&&(d.get(f).onsuccess=function(){let k=this.result;
-k=k&&k.length?k.concat(g):g;d.put(k,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};
-function kb(a,b,c){const d=a.value;let e,f,g=0;for(let k=0,h;k<d.length;k++){if(h=c?d:d[k]){for(let l=0,m,q;l<b.length;l++)if(q=b[l],m=h.indexOf(f?parseInt(q,10):q),0>m&&!f&&"string"===typeof q&&!isNaN(q)&&(m=h.indexOf(parseInt(q,10)))&&(f=1),0<=m)if(e=1,1<h.length)h.splice(m,1);else{d[k]=[];break}g+=h.length}if(c)break}g?e&&a.update(d):a.delete();a.continue()}
+u.transaction=function(a,b,c){let d=this.h[a+":"+b];if(d)return c.call(this,d);let e=this.db.transaction(a,b);this.h[a+":"+b]=d=e.objectStore(a);return new Promise((f,g)=>{e.onerror=h=>{this.h[a+":"+b]=null;e.abort();e=d=null;g(h)};e.oncomplete=h=>{e=d=this.h[a+":"+b]=null;f(h||!0)};return c.call(this,d)})};
+u.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let d=a.commit_task;a.commit_task=[];for(let e=0,f;e<d.length;e++)if(f=d[e],f.clear){await this.clear();b=!0;break}else d[e]=f.V;b||(c||(d=d.concat(ba(a.reg))),d.length&&await this.remove(d))}a.reg.size&&(await this.transaction("map","readwrite",function(d){for(const e of a.map){const f=e[0],g=e[1];g.length&&(b?d.put(g,f):d.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
+for(let m=0,p,n;m<l;m++)if((n=g[m])&&n.length){if((p=h[m])&&p.length)for(k=0;k<n.length;k++)p.push(n[k]);else h[m]=n;k=1}}else h=g,k=1;k&&d.put(h,f)})}}),await this.transaction("ctx","readwrite",function(d){for(const e of a.ctx){const f=e[0],g=e[1];for(const h of g){const k=h[0],l=h[1];l.length&&(b?d.put(l,f+":"+k):d.get(f+":"+k).onsuccess=function(){let m=this.result;var p;if(m&&m.length){const n=Math.max(m.length,l.length);for(let q=0,r,t;q<n;q++)if((t=l[q])&&t.length){if((r=m[q])&&r.length)for(p=
+0;p<t.length;p++)r.push(t[p]);else m[q]=t;p=1}}else m=l,p=1;p&&d.put(m,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(d){for(const e of a.store){const f=e[0],g=e[1];d.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(d){for(const e of a.reg.keys())d.put(1,e)}),a.tag&&await this.transaction("tag","readwrite",function(d){for(const e of a.tag){const f=e[0],g=e[1];g.length&&(d.get(f).onsuccess=function(){let h=this.result;
+h=h&&h.length?h.concat(g):g;d.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 kb(a,b,c){const d=a.value;let e,f,g=0;for(let h=0,k;h<d.length;h++){if(k=c?d:d[h]){for(let l=0,m,p;l<b.length;l++)if(p=b[l],m=k.indexOf(f?parseInt(p,10):p),0>m&&!f&&"string"===typeof p&&!isNaN(p)&&(m=k.indexOf(parseInt(p,10)))&&(f=1),0<=m)if(e=1,1<k.length)k.splice(m,1);else{d[h]=[];break}g+=k.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(){const c=this.result;c&&kb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&kb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&kb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(let c=0;c<a.length;c++)b.delete(a[c])})])};
 function Z(a){return new Promise((b,c)=>{a.onsuccess=function(){b(this.result)};a.oncomplete=function(){b(this.result)};a.onerror=c;a=null})};const lb={Index:M,Charset:Ta,Encoder:K,Document:T,Worker:N,Resolver:X,IndexedDB:jb,Language:{}},mb=self;let nb;(nb=mb.define)&&nb.amd?nb([],function(){return lb}):"object"===typeof mb.exports?mb.exports=lb:mb.FlexSearch=lb;}(this||self));
diff --git a/dist/flexsearch.bundle.module.debug.js b/dist/flexsearch.bundle.module.debug.js
index d613217..57b9bef 100644
--- a/dist/flexsearch.bundle.module.debug.js
+++ b/dist/flexsearch.bundle.module.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle/Module/Debug)
+ * FlexSearch.js v0.8.103 (Bundle/Module/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -12,8 +12,8 @@ function z(a, b, c) {
     if ("undefined" !== e) {
       if (c) {
         if ("function" === e && d === e) {
-          return function(k) {
-            return a(c(k));
+          return function(h) {
+            return a(c(h));
           };
         }
         b = a.constructor;
@@ -43,7 +43,7 @@ function z(a, b, c) {
   }
   return "undefined" === e ? b : a;
 }
-function C() {
+function B() {
   return Object.create(null);
 }
 function aa(a, b) {
@@ -222,8 +222,8 @@ u.encode = function(a) {
   this.numeric && 3 < a.length && (a = a.replace(ha, "$1 $2").replace(ia, "$1 $2").replace(fa, "$1 "));
   const b = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer);
   let c = [], d = this.split || "" === this.split ? a.split(this.split) : a;
-  for (let f = 0, g, k; f < d.length; f++) {
-    if (!(g = k = d[f])) {
+  for (let f = 0, g, h; f < d.length; f++) {
+    if (!(g = h = d[f])) {
       continue;
     }
     if (g.length < this.minlength) {
@@ -247,9 +247,9 @@ u.encode = function(a) {
         this.L = setTimeout(ka, 50, this);
       }
     }
-    let h;
-    this.stemmer && 2 < g.length && (this.O || (this.O = new RegExp("(?!^)(" + this.A + ")$")), g = g.replace(this.O, l => this.stemmer.get(l)), h = 1);
-    g && h && (g.length < this.minlength || this.filter && this.filter.has(g)) && (g = "");
+    let k;
+    this.stemmer && 2 < g.length && (this.O || (this.O = new RegExp("(?!^)(" + this.A + ")$")), g = g.replace(this.O, l => this.stemmer.get(l)), k = 1);
+    g && k && (g.length < this.minlength || this.filter && this.filter.has(g)) && (g = "");
     if (g && (this.mapper || this.dedupe && 1 < g.length)) {
       e = "";
       for (let l = 0, m = "", q, n; l < g.length; l++) {
@@ -263,7 +263,7 @@ u.encode = function(a) {
         g = g.replace(this.replacer[e], this.replacer[e + 1]);
       }
     }
-    this.cache && k.length <= this.M && (this.I.set(k, g), this.I.size > this.S && (this.I.clear(), this.M = this.M / 1.1 | 0));
+    this.cache && h.length <= this.M && (this.I.set(h, g), this.I.size > this.S && (this.I.clear(), this.M = this.M / 1.1 | 0));
     g && c.push(g);
   }
   this.finalize && (c = this.finalize(c) || c);
@@ -293,19 +293,19 @@ function ka(a) {
 ;let ma = 0;
 function N(a = {}) {
   function b(g) {
-    function k(h) {
-      h = h.data || h;
-      const l = h.id, m = l && e.h[l];
-      m && (m(h.msg), delete e.h[l]);
+    function h(k) {
+      k = k.data || k;
+      const l = k.id, m = l && e.h[l];
+      m && (m(k.msg), delete e.h[l]);
     }
     this.worker = g;
-    this.h = C();
+    this.h = B();
     if (this.worker) {
-      d ? this.worker.on("message", k) : this.worker.onmessage = k;
+      d ? this.worker.on("message", h) : this.worker.onmessage = h;
       if (a.config) {
-        return new Promise(function(h) {
+        return new Promise(function(k) {
           e.h[++ma] = function() {
-            h(e);
+            k(e);
           };
           e.worker.postMessage({id:ma, task:"init", factory:c, options:a});
         });
@@ -412,18 +412,18 @@ function ua(a, b) {
   return b;
 }
 function va(a, b, c, d, e, f, g = 0) {
-  const k = d && d.constructor === Array;
-  var h = k ? d.shift() : d;
-  if (!h) {
+  const h = d && d.constructor === Array;
+  var k = h ? d.shift() : d;
+  if (!k) {
     return this.export(a, b, e, f + 1);
   }
-  if ((h = a((b ? b + "." : "") + (g + 1) + "." + c, JSON.stringify(h))) && h.then) {
+  if ((k = a((b ? b + "." : "") + (g + 1) + "." + c, JSON.stringify(k))) && k.then) {
     const l = this;
-    return h.then(function() {
-      return va.call(l, a, b, c, k ? d : null, e, f, g + 1);
+    return k.then(function() {
+      return va.call(l, a, b, c, h ? d : null, e, f, g + 1);
     });
   }
-  return va.call(this, a, b, c, k ? d : null, e, f, g + 1);
+  return va.call(this, a, b, c, h ? d : null, e, f, g + 1);
 }
 ;function wa(a, b, c, d) {
   let e = [];
@@ -432,8 +432,8 @@ function va(a, b, c, d, e, f, g = 0) {
       b -= g.length;
     } else {
       b = g[d ? "splice" : "slice"](b, c);
-      const k = b.length;
-      if (k && (e = e.length ? e.concat(b) : b, c -= k, d && (a.length -= k), !c)) {
+      const h = b.length;
+      if (h && (e = e.length ? e.concat(b) : b, c -= h, d && (a.length -= h), !c)) {
         break;
       }
       b = 0;
@@ -468,13 +468,13 @@ function Q(a) {
     if ("indexOf" === d) {
       return function(e) {
         let f = 0;
-        for (let g = 0, k, h; g < b.index.length; g++) {
-          k = b.index[g];
-          h = k.indexOf(e);
-          if (0 <= h) {
-            return f + h;
+        for (let g = 0, h, k; g < b.index.length; g++) {
+          h = b.index[g];
+          k = h.indexOf(e);
+          if (0 <= k) {
+            return f + k;
           }
-          f += k.length;
+          f += h.length;
         }
         return -1;
       };
@@ -524,7 +524,7 @@ function R(a = 8) {
   if (!this) {
     return new R(a);
   }
-  this.index = C();
+  this.index = B();
   this.B = [];
   this.size = 0;
   32 < a ? (this.h = xa, this.A = BigInt(a)) : (this.h = ya, this.A = a);
@@ -542,7 +542,7 @@ function S(a = 8) {
   if (!this) {
     return new S(a);
   }
-  this.index = C();
+  this.index = B();
   this.h = [];
   32 < a ? (this.B = xa, this.A = BigInt(a)) : (this.B = ya, this.A = a);
 }
@@ -561,7 +561,7 @@ u.delete = S.prototype.delete = function(a) {
   b && b.delete(a) && this.size--;
 };
 u.clear = S.prototype.clear = function() {
-  this.index = C();
+  this.index = B();
   this.h = [];
   this.size = 0;
 };
@@ -619,15 +619,15 @@ function xa(a) {
     if (!c && this.reg.has(a)) {
       return this.update(a, b);
     }
-    for (let k = 0, h; k < this.field.length; k++) {
-      h = this.D[k];
-      var d = this.index.get(this.field[k]);
-      if ("function" === typeof h) {
-        var e = h(b);
+    for (let h = 0, k; h < this.field.length; h++) {
+      k = this.D[h];
+      var d = this.index.get(this.field[h]);
+      if ("function" === typeof k) {
+        var e = k(b);
         e && d.add(a, e, !1, !0);
       } else {
-        if (e = h.J, !e || e(b)) {
-          h.constructor === String ? h = ["" + h] : G(h) && (h = [h]), za(b, h, this.K, 0, d, a, h[0], c);
+        if (e = k.J, !e || e(b)) {
+          k.constructor === String ? k = ["" + k] : G(k) && (k = [k]), za(b, k, this.K, 0, d, a, k[0], c);
         }
       }
     }
@@ -635,14 +635,14 @@ function xa(a) {
       for (d = 0; d < this.G.length; d++) {
         var f = this.G[d], g = this.P[d];
         e = this.tag.get(g);
-        let k = C();
+        let h = B();
         if ("function" === typeof f) {
           if (f = f(b), !f) {
             continue;
           }
         } else {
-          const h = f.J;
-          if (h && !h(b)) {
+          const k = f.J;
+          if (k && !k(b)) {
             continue;
           }
           f.constructor === String && (f = "" + f);
@@ -650,8 +650,8 @@ function xa(a) {
         }
         if (e && f) {
           G(f) && (f = [f]);
-          for (let h = 0, l, m; h < f.length; h++) {
-            if (l = f[h], !k[l] && (k[l] = 1, (g = e.get(l)) ? m = g : e.set(l, m = []), !c || !m.includes(a))) {
+          for (let k = 0, l, m; k < f.length; k++) {
+            if (l = f[k], !h[l] && (h[l] = 1, (g = e.get(l)) ? m = g : e.set(l, m = []), !c || !m.includes(a))) {
               if (m.length === 2 ** 31 - 1) {
                 g = new Q(m);
                 if (this.fastupdate) {
@@ -671,11 +671,11 @@ function xa(a) {
       }
     }
     if (this.store && (!c || !this.store.has(a))) {
-      let k;
+      let h;
       if (this.C) {
-        k = C();
-        for (let h = 0, l; h < this.C.length; h++) {
-          l = this.C[h];
+        h = B();
+        for (let k = 0, l; k < this.C.length; k++) {
+          l = this.C[k];
           if ((c = l.J) && !c(b)) {
             continue;
           }
@@ -687,13 +687,13 @@ function xa(a) {
             }
             l = [l.U];
           } else if (G(l) || l.constructor === String) {
-            k[l] = b[l];
+            h[l] = b[l];
             continue;
           }
-          Aa(b, k, l, 0, l[0], m);
+          Aa(b, h, l, 0, l[0], m);
         }
       }
-      this.store.set(a, k || b);
+      this.store.set(a, h || b);
     }
   }
   return this;
@@ -708,11 +708,11 @@ function Aa(a, b, c, d, e, f) {
         Aa(a, b, c, d, e);
       }
     } else {
-      b = b[e] || (b[e] = C()), e = c[++d], Aa(a, b, c, d, e);
+      b = b[e] || (b[e] = B()), e = c[++d], Aa(a, b, c, d, e);
     }
   }
 }
-function za(a, b, c, d, e, f, g, k) {
+function za(a, b, c, d, e, f, g, h) {
   if (a = a[g]) {
     if (d === b.length - 1) {
       if (a.constructor === Array) {
@@ -724,14 +724,14 @@ function za(a, b, c, d, e, f, g, k) {
         }
         a = a.join(" ");
       }
-      e.add(f, a, k, !0);
+      e.add(f, a, h, !0);
     } else {
       if (a.constructor === Array) {
         for (g = 0; g < a.length; g++) {
-          za(a, b, c, d, e, f, g, k);
+          za(a, b, c, d, e, f, g, h);
         }
       } else {
-        g = b[++d], za(a, b, c, d, e, f, g, k);
+        g = b[++d], za(a, b, c, d, e, f, g, h);
       }
     }
   } else {
@@ -739,36 +739,36 @@ function za(a, b, c, d, e, f, g, k) {
   }
 }
 ;function Ba(a, b, c, d, e, f, g) {
-  const k = a.length;
-  let h = [], l;
+  const h = a.length;
+  let k = [], l;
   var m;
-  l = C();
-  for (let q = 0, n, p, t, r; q < b; q++) {
-    for (let w = 0; w < k; w++) {
-      if (t = a[w], q < t.length && (n = t[q])) {
+  l = B();
+  for (let q = 0, n, p, r, t; q < b; q++) {
+    for (let v = 0; v < h; v++) {
+      if (r = a[v], q < r.length && (n = r[q])) {
         for (let x = 0; x < n.length; x++) {
-          p = n[x], (m = l[p]) ? l[p]++ : (m = 0, l[p] = 1), r = h[m] || (h[m] = []), g || (m = q + (w ? 0 : f || 0), r = r[m] || (r[m] = [])), r.push(p);
+          p = n[x], (m = l[p]) ? l[p]++ : (m = 0, l[p] = 1), t = k[m] || (k[m] = []), g || (m = q + (v ? 0 : f || 0), t = t[m] || (t[m] = [])), t.push(p);
         }
       }
     }
   }
-  if (a = h.length) {
+  if (a = k.length) {
     if (e) {
-      h = 1 < h.length ? Ca(h, d, c, g, 0) : (h = h[0]).length > c || d ? h.slice(d, c + d) : h;
+      k = 1 < k.length ? Ca(k, d, c, g, 0) : (k = k[0]).length > c || d ? k.slice(d, c + d) : k;
     } else {
-      if (a < k) {
+      if (a < h) {
         return [];
       }
-      h = h[a - 1];
+      k = k[a - 1];
       if (c || d) {
         if (g) {
-          if (h.length > c || d) {
-            h = h.slice(d, c + d);
+          if (k.length > c || d) {
+            k = k.slice(d, c + d);
           }
         } else {
           e = [];
-          for (let q = 0, n; q < h.length; q++) {
-            if (n = h[q], n.length > d) {
+          for (let q = 0, n; q < k.length; q++) {
+            if (n = k[q], n.length > d) {
               d -= n.length;
             } else {
               if (n.length > c || d) {
@@ -780,26 +780,26 @@ function za(a, b, c, d, e, f, g, k) {
               }
             }
           }
-          h = 1 < e.length ? [].concat.apply([], e) : e[0];
+          k = 1 < e.length ? [].concat.apply([], e) : e[0];
         }
       }
     }
   }
-  return h;
+  return k;
 }
 function Ca(a, b, c, d, e) {
-  const f = [], g = C();
-  let k;
-  var h = a.length;
+  const f = [], g = B();
+  let h;
+  var k = a.length;
   let l, m = 0;
   if (d) {
-    for (e = h - 1; 0 <= e; e--) {
-      for (d = a[e], l = d.length, h = 0; h < l; h++) {
-        if (k = d[h], !g[k]) {
-          if (g[k] = 1, b) {
+    for (e = k - 1; 0 <= e; e--) {
+      for (d = a[e], l = d.length, k = 0; k < l; k++) {
+        if (h = d[k], !g[h]) {
+          if (g[h] = 1, b) {
             b--;
           } else {
-            if (f.push(k), f.length === c) {
+            if (f.push(h), f.length === c) {
               return f;
             }
           }
@@ -809,15 +809,15 @@ function Ca(a, b, c, d, e) {
   } else {
     let q = ca(a);
     for (let n = 0; n < q; n++) {
-      for (let p = h - 1; 0 <= p; p--) {
+      for (let p = k - 1; 0 <= p; p--) {
         if (l = (d = a[p][n]) && d.length) {
-          for (let t = 0; t < l; t++) {
-            if (k = d[t], !g[k]) {
-              if (g[k] = 1, b) {
+          for (let r = 0; r < l; r++) {
+            if (h = d[r], !g[h]) {
+              if (g[h] = 1, b) {
                 b--;
               } else {
-                let r = n + (p < h - 1 ? e || 0 : 0);
-                (f[r] || (f[r] = [])).push(k);
+                let t = n + (p < k - 1 ? e || 0 : 0);
+                (f[t] || (f[t] = [])).push(h);
                 if (++m === c) {
                   return f;
                 }
@@ -831,7 +831,7 @@ function Ca(a, b, c, d, e) {
   return f;
 }
 function Da(a, b) {
-  const c = C(), d = [];
+  const c = B(), d = [];
   for (let e = 0, f; e < b.length; e++) {
     f = b[e];
     for (let g = 0; g < f.length; g++) {
@@ -846,168 +846,168 @@ function Da(a, b) {
 ;T.prototype.search = function(a, b, c, d) {
   c || (!b && H(a) ? (c = a, a = "") : H(b) && (c = b, b = 0));
   let e = [], f = [], g;
-  let k;
   let h;
+  let k;
   let l, m = 0, q;
   if (c) {
     c.constructor === Array && (c = {index:c});
     a = c.query || a;
     g = c.pluck;
-    k = c.merge;
-    h = g || c.field || c.index;
+    h = c.merge;
+    k = g || c.field || c.index;
     var n = this.tag && c.tag;
     var p = this.store && c.enrich;
-    var t = c.suggest;
+    var r = c.suggest;
     q = c.highlight;
     b = c.limit || b;
     l = c.offset || 0;
     b || (b = 100);
     if (n && (!this.db || !d)) {
       n.constructor !== Array && (n = [n]);
-      var r = [];
-      for (let y = 0, v; y < n.length; y++) {
-        v = n[y];
-        if (G(v)) {
+      var t = [];
+      for (let y = 0, w; y < n.length; y++) {
+        w = n[y];
+        if (G(w)) {
           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 x = 0; x < w.length; x++) {
-              r.push(v.field, w[x]);
+        if (w.field && w.tag) {
+          var v = w.tag;
+          if (v.constructor === Array) {
+            for (var x = 0; x < v.length; x++) {
+              t.push(w.field, v[x]);
             }
           } else {
-            r.push(v.field, w);
+            t.push(w.field, v);
           }
         } else {
-          w = Object.keys(v);
-          for (let A = 0, I, D; A < w.length; A++) {
-            if (I = w[A], D = v[I], D.constructor === Array) {
-              for (x = 0; x < D.length; x++) {
-                r.push(I, D[x]);
+          v = Object.keys(w);
+          for (let A = 0, I, C; A < v.length; A++) {
+            if (I = v[A], C = w[I], C.constructor === Array) {
+              for (x = 0; x < C.length; x++) {
+                t.push(I, C[x]);
               }
             } else {
-              r.push(I, D);
+              t.push(I, C);
             }
           }
         }
       }
-      if (!r.length) {
+      if (!t.length) {
         throw Error("Your tag definition within the search options is probably wrong. No valid tags found.");
       }
-      n = r;
+      n = t;
       if (!a) {
-        t = [];
-        if (r.length) {
-          for (n = 0; n < r.length; n += 2) {
+        r = [];
+        if (t.length) {
+          for (n = 0; n < t.length; n += 2) {
             if (this.db) {
-              d = this.index.get(r[n]);
+              d = this.index.get(t[n]);
               if (!d) {
-                console.warn("Tag '" + r[n] + ":" + r[n + 1] + "' will be skipped because there is no field '" + r[n] + "'.");
+                console.warn("Tag '" + t[n] + ":" + t[n + 1] + "' will be skipped because there is no field '" + t[n] + "'.");
                 continue;
               }
-              t.push(d = d.db.tag(r[n + 1], b, l, p));
+              r.push(d = d.db.tag(t[n + 1], b, l, p));
             } else {
-              d = Ea.call(this, r[n], r[n + 1], b, l, p);
+              d = Ea.call(this, t[n], t[n + 1], b, l, p);
             }
-            e.push({field:r[n], tag:r[n + 1], result:d});
+            e.push({field:t[n], tag:t[n + 1], result:d});
           }
         }
-        return t.length ? Promise.all(t).then(function(y) {
-          for (let v = 0; v < y.length; v++) {
-            e[v].result = y[v];
+        return r.length ? Promise.all(r).then(function(y) {
+          for (let w = 0; w < y.length; w++) {
+            e[w].result = y[w];
           }
           return e;
         }) : e;
       }
     }
-    G(h) && (h = [h]);
+    G(k) && (k = [k]);
   }
-  h || (h = this.field);
-  r = !d && (this.worker || this.db) && [];
-  let B;
-  for (let y = 0, v, A, I; y < h.length; y++) {
-    A = h[y];
+  k || (k = this.field);
+  t = !d && (this.worker || this.db) && [];
+  let E;
+  for (let y = 0, w, A, I; y < k.length; y++) {
+    A = k[y];
     if (this.db && this.tag && !this.D[y]) {
       continue;
     }
-    let D;
-    G(A) || (D = A, A = D.field, a = D.query || a, b = D.limit || b, l = D.offset || l, t = D.suggest || t, p = this.store && (D.enrich || p));
+    let C;
+    G(A) || (C = A, A = C.field, a = C.query || a, b = C.limit || b, l = C.offset || l, r = C.suggest || r, p = this.store && (C.enrich || p));
     if (d) {
-      v = d[y];
+      w = d[y];
     } else {
-      if (w = D || c, x = this.index.get(A), n && (this.db && (w.tag = n, B = x.db.support_tag_search, w.field = h), B || (w.enrich = !1)), r) {
-        r[y] = x.search(a, b, w);
-        w && p && (w.enrich = p);
+      if (v = C || c, x = this.index.get(A), n && (this.db && (v.tag = n, E = x.db.support_tag_search, v.field = k), E || (v.enrich = !1)), t) {
+        t[y] = x.search(a, b, v);
+        v && p && (v.enrich = p);
         continue;
       } else {
-        v = x.search(a, b, w), w && p && (w.enrich = p);
+        w = x.search(a, b, v), v && p && (v.enrich = p);
       }
     }
-    I = v && v.length;
+    I = w && w.length;
     if (n && I) {
-      w = [];
+      v = [];
       x = 0;
       if (this.db && d) {
-        if (!B) {
-          for (let E = h.length; E < d.length; E++) {
-            let F = d[E];
+        if (!E) {
+          for (let D = k.length; D < d.length; D++) {
+            let F = d[D];
             if (F && F.length) {
-              x++, w.push(F);
-            } else if (!t) {
+              x++, v.push(F);
+            } else if (!r) {
               return e;
             }
           }
         }
       } else {
-        for (let E = 0, F, gb; E < n.length; E += 2) {
-          F = this.tag.get(n[E]);
+        for (let D = 0, F, gb; D < n.length; D += 2) {
+          F = this.tag.get(n[D]);
           if (!F) {
-            if (console.warn("Tag '" + n[E] + ":" + n[E + 1] + "' will be skipped because there is no field '" + n[E] + "'."), t) {
+            if (console.warn("Tag '" + n[D] + ":" + n[D + 1] + "' will be skipped because there is no field '" + n[D] + "'."), r) {
               continue;
             } else {
               return e;
             }
           }
-          if (gb = (F = F && F.get(n[E + 1])) && F.length) {
-            x++, w.push(F);
-          } else if (!t) {
+          if (gb = (F = F && F.get(n[D + 1])) && F.length) {
+            x++, v.push(F);
+          } else if (!r) {
             return e;
           }
         }
       }
       if (x) {
-        v = Da(v, w);
-        I = v.length;
-        if (!I && !t) {
+        w = Da(w, v);
+        I = w.length;
+        if (!I && !r) {
           return e;
         }
         x--;
       }
     }
     if (I) {
-      f[m] = A, e.push(v), m++;
-    } else if (1 === h.length) {
+      f[m] = A, e.push(w), m++;
+    } else if (1 === k.length) {
       return e;
     }
   }
-  if (r) {
-    if (this.db && n && n.length && !B) {
+  if (t) {
+    if (this.db && n && n.length && !E) {
       for (p = 0; p < n.length; p += 2) {
         d = this.index.get(n[p]);
         if (!d) {
-          if (console.warn("Tag '" + n[p] + ":" + n[p + 1] + "' was not found because there is no field '" + n[p] + "'."), t) {
+          if (console.warn("Tag '" + n[p] + ":" + n[p + 1] + "' was not found because there is no field '" + n[p] + "'."), r) {
             continue;
           } else {
             return e;
           }
         }
-        r.push(d.db.tag(n[p + 1], b, l, !1));
+        t.push(d.db.tag(n[p + 1], b, l, !1));
       }
     }
     const y = this;
-    return Promise.all(r).then(function(v) {
-      return v.length ? y.search(a, b, c, v) : v;
+    return Promise.all(t).then(function(w) {
+      return w.length ? y.search(a, b, c, w) : w;
     });
   }
   if (!m) {
@@ -1016,56 +1016,56 @@ function Da(a, b) {
   if (g && (!p || !this.store)) {
     return e[0];
   }
-  r = [];
-  for (let y = 0, v; y < f.length; y++) {
-    v = e[y];
-    p && v.length && !v[0].doc && (this.db ? r.push(v = this.index.get(this.field[0]).db.enrich(v)) : v.length && (v = Fa.call(this, v)));
+  t = [];
+  for (let y = 0, w; y < f.length; y++) {
+    w = e[y];
+    p && w.length && !w[0].doc && (this.db ? t.push(w = this.index.get(this.field[0]).db.enrich(w)) : w.length && (w = Fa.call(this, w)));
     if (g) {
-      return v;
+      return w;
     }
-    e[y] = {field:f[y], result:v};
+    e[y] = {field:f[y], result:w};
   }
-  if (p && this.db && r.length) {
+  if (p && this.db && t.length) {
     const y = this;
-    return Promise.all(r).then(function(v) {
-      for (let A = 0; A < v.length; A++) {
-        e[A].result = v[A];
+    return Promise.all(t).then(function(w) {
+      for (let A = 0; A < w.length; A++) {
+        e[A].result = w[A];
       }
-      return k ? Ga(e, b) : q ? Ha(e, a, y.index, y.field, y.D, q) : e;
+      return h ? Ga(e, b) : q ? Ha(e, a, y.index, y.field, y.D, q) : e;
     });
   }
-  return k ? Ga(e, b) : q ? Ha(e, a, this.index, this.field, this.D, q) : e;
+  return h ? Ga(e, b) : q ? Ha(e, a, this.index, this.field, this.D, q) : e;
 };
 function Ha(a, b, c, d, e, f) {
-  let g, k, h;
-  for (let m = 0, q, n, p, t, r; m < a.length; m++) {
+  let g, h, k;
+  for (let m = 0, q, n, p, r, t; m < a.length; m++) {
     q = a[m].result;
     n = a[m].field;
-    t = c.get(n);
-    p = t.encoder;
-    h = t.tokenize;
-    r = e[d.indexOf(n)];
-    p !== g && (g = p, k = g.encode(b));
-    for (let w = 0; w < q.length; w++) {
+    r = c.get(n);
+    p = r.encoder;
+    k = r.tokenize;
+    t = e[d.indexOf(n)];
+    p !== g && (g = p, h = g.encode(b));
+    for (let v = 0; v < q.length; v++) {
       let x = "";
-      var l = J(q[w].doc, r);
-      let B = g.encode(l);
+      var l = J(q[v].doc, t);
+      let E = g.encode(l);
       l = l.split(g.split);
-      for (let y = 0, v, A; y < B.length; y++) {
-        v = B[y];
+      for (let y = 0, w, A; y < E.length; y++) {
+        w = E[y];
         A = l[y];
         let I;
-        for (let D = 0, E; D < k.length; D++) {
-          if (E = k[D], "strict" === h) {
-            if (v === E) {
+        for (let C = 0, D; C < h.length; C++) {
+          if (D = h[C], "strict" === k) {
+            if (w === D) {
               x += (x ? " " : "") + f.replace("$1", A);
               I = !0;
               break;
             }
           } else {
-            const F = v.indexOf(E);
+            const F = w.indexOf(D);
             if (-1 < F) {
-              x += (x ? " " : "") + A.substring(0, F) + f.replace("$1", A.substring(F, E.length)) + A.substring(F + E.length);
+              x += (x ? " " : "") + A.substring(0, F) + f.replace("$1", A.substring(F, D.length)) + A.substring(F + D.length);
               I = !0;
               break;
             }
@@ -1073,24 +1073,24 @@ function Ha(a, b, c, d, e, f) {
         }
         I || (x += (x ? " " : "") + l[y]);
       }
-      q[w].highlight = x;
+      q[v].highlight = x;
     }
   }
   return a;
 }
 function Ga(a, b) {
-  const c = [], d = C();
+  const c = [], d = B();
   for (let e = 0, f, g; e < a.length; e++) {
     f = a[e];
     g = f.result;
-    for (let k = 0, h, l, m; k < g.length; k++) {
-      if (l = g[k], h = l.id, m = d[h]) {
+    for (let h = 0, k, l, m; h < g.length; h++) {
+      if (l = g[h], k = l.id, m = d[k]) {
         m.push(f.field);
       } else {
         if (c.length === b) {
           return c;
         }
-        l.field = d[h] = [f.field];
+        l.field = d[k] = [f.field];
         c.push(l);
       }
     }
@@ -1162,9 +1162,9 @@ function Fa(a) {
       const e = this;
       return Promise.all(a).then(function(f) {
         let g = 0;
-        for (const k of e.index.entries()) {
-          const h = k[0];
-          k[1].then && e.index.set(h, f[g++]);
+        for (const h of e.index.entries()) {
+          const k = h[0];
+          h[1].then && e.index.set(k, f[g++]);
         }
         return e;
       });
@@ -1191,9 +1191,9 @@ u.mount = function(a) {
   for (let e = 0, f, g; e < b.length; e++) {
     d.field = g = b[e];
     f = this.index.get(g);
-    const k = new a.constructor(a.id, d);
-    k.id = a.id;
-    c[e] = k.mount(f);
+    const h = new a.constructor(a.id, d);
+    h.id = a.id;
+    c[e] = h.mount(f);
     f.document = !0;
     e ? f.bypass = !0 : f.store = this.store;
   }
@@ -1224,8 +1224,8 @@ function Ja(a, b) {
     G(f) || (g = f, f = f.field);
     g = H(g) ? Object.assign({}, a, g) : a;
     if (this.worker) {
-      const k = new N(g);
-      c.set(f, k);
+      const h = new N(g);
+      c.set(f, h);
     }
     this.worker || c.set(f, new M(g, this.reg));
     g.custom ? this.D[e] = g.custom : (this.D[e] = Ia(f, this.K), g.filter && ("string" === typeof this.D[e] && (this.D[e] = new String(this.D[e])), this.D[e].J = g.filter));
@@ -1311,9 +1311,9 @@ u.export = function(a, b, c = 0, d = 0) {
   if (c < this.field.length) {
     const g = this.field[c];
     if ((b = this.index.get(g).export(a, g, c, d = 1)) && b.then) {
-      const k = this;
+      const h = this;
       return b.then(function() {
-        return k.export(a, g, c + 1);
+        return h.export(a, g, c + 1);
       });
     }
     return this.export(a, g, c + 1);
@@ -1374,6 +1374,7 @@ u.import = function(a, b) {
 oa(T.prototype);
 function Ka(a, b, c) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new U());
   let d = this.cache.get(a);
   if (!d) {
     d = this.search(a, b, c);
@@ -1437,7 +1438,7 @@ var Ta = {LatinExact:{normalize:!1, dedupe:!1}, LatinDefault:La, LatinSimple:{no
   return ("" + a).replace(Sa, " ");
 }}};
 const Ua = {memory:{resolution:1}, performance:{resolution:6, fastupdate:!0, context:{depth:1, resolution:3}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:9}}};
-C();
+B();
 M.prototype.add = function(a, b, c, d) {
   if (b && (a || 0 === a)) {
     if (!d && !c && this.reg.has(a)) {
@@ -1445,45 +1446,45 @@ M.prototype.add = function(a, b, c, d) {
     }
     b = this.encoder.encode(b);
     if (d = b.length) {
-      const l = C(), m = C(), q = this.depth, n = this.resolution;
+      const l = B(), m = B(), q = this.depth, n = this.resolution;
       for (let p = 0; p < d; p++) {
-        let t = b[this.rtl ? d - 1 - p : p];
-        var e = t.length;
-        if (e && (q || !m[t])) {
-          var f = this.score ? this.score(b, t, p, null, 0) : Va(n, d, p), g = "";
+        let r = b[this.rtl ? d - 1 - p : p];
+        var e = r.length;
+        if (e && (q || !m[r])) {
+          var f = this.score ? this.score(b, r, p, null, 0) : Va(n, d, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < e) {
                 for (f = 0; f < e; f++) {
-                  for (var k = e; k > f; k--) {
-                    g = t.substring(f, k);
-                    var h = this.score ? this.score(b, t, p, g, f) : Va(n, d, p, e, f);
-                    V(this, m, g, h, a, c);
+                  for (var h = e; h > f; h--) {
+                    g = r.substring(f, h);
+                    var k = this.score ? this.score(b, r, p, g, f) : Va(n, d, p, e, f);
+                    V(this, m, g, k, a, c);
                   }
                 }
                 break;
               }
             case "reverse":
               if (1 < e) {
-                for (k = e - 1; 0 < k; k--) {
-                  g = t[k] + g, h = this.score ? this.score(b, t, p, g, k) : Va(n, d, p, e, k), V(this, m, g, h, a, c);
+                for (h = e - 1; 0 < h; h--) {
+                  g = r[h] + g, k = this.score ? this.score(b, r, p, g, h) : Va(n, d, p, e, h), V(this, m, g, k, a, c);
                 }
                 g = "";
               }
             case "forward":
               if (1 < e) {
-                for (k = 0; k < e; k++) {
-                  g += t[k], V(this, m, g, f, a, c);
+                for (h = 0; h < e; h++) {
+                  g += r[h], V(this, m, g, f, a, c);
                 }
                 break;
               }
             default:
-              if (V(this, m, t, f, a, c), q && 1 < d && p < d - 1) {
-                for (e = C(), g = this.R, f = t, k = Math.min(q + 1, d - p), e[f] = 1, h = 1; h < k; h++) {
-                  if ((t = b[this.rtl ? d - 1 - p - h : p + h]) && !e[t]) {
-                    e[t] = 1;
-                    const r = this.score ? this.score(b, f, p, t, h) : Va(g + (d / 2 > g ? 0 : 1), d, p, k - 1, h - 1), w = this.bidirectional && t > f;
-                    V(this, l, w ? f : t, r, a, c, w ? t : f);
+              if (V(this, m, r, f, a, c), q && 1 < d && p < d - 1) {
+                for (e = B(), g = this.R, f = r, h = Math.min(q + 1, d - p), e[f] = 1, k = 1; k < h; k++) {
+                  if ((r = b[this.rtl ? d - 1 - p - k : p + k]) && !e[r]) {
+                    e[r] = 1;
+                    const t = this.score ? this.score(b, f, p, r, k) : Va(g + (d / 2 > g ? 0 : 1), d, p, h - 1, k - 1), v = this.bidirectional && r > f;
+                    V(this, l, v ? f : r, t, a, c, v ? r : f);
                   }
                 }
               }
@@ -1499,20 +1500,20 @@ M.prototype.add = function(a, b, c, d) {
   return this;
 };
 function V(a, b, c, d, e, f, g) {
-  let k = g ? a.ctx : a.map, h;
-  if (!b[c] || g && !(h = b[c])[g]) {
-    if (g ? (b = h || (b[c] = C()), b[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : b[c] = 1, (h = k.get(c)) ? k = h : k.set(c, k = h = []), k = k[d] || (k[d] = []), !f || !k.includes(e)) {
-      if (k.length === 2 ** 31 - 1) {
-        b = new Q(k);
+  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[d] || (h[d] = []), !f || !h.includes(e)) {
+      if (h.length === 2 ** 31 - 1) {
+        b = new Q(h);
         if (a.fastupdate) {
           for (let l of a.reg.values()) {
-            l.includes(k) && (l[l.indexOf(k)] = b);
+            l.includes(h) && (l[l.indexOf(h)] = b);
           }
         }
-        h[d] = k = b;
+        k[d] = h = b;
       }
-      k.push(e);
-      a.fastupdate && ((d = a.reg.get(e)) ? d.push(k) : a.reg.set(e, [k]));
+      h.push(e);
+      a.fastupdate && ((d = a.reg.get(e)) ? d.push(h) : a.reg.set(e, [h]));
     }
   }
 }
@@ -1524,24 +1525,24 @@ function Va(a, b, c, d, e) {
     return a = a[0], a = c || a.length > b ? b ? a.slice(c, c + b) : a.slice(c) : a, d ? Xa(a) : a;
   }
   let e = [];
-  for (let f = 0, g, k; f < a.length; f++) {
-    if ((g = a[f]) && (k = g.length)) {
+  for (let f = 0, g, h; f < a.length; f++) {
+    if ((g = a[f]) && (h = g.length)) {
       if (c) {
-        if (c >= k) {
-          c -= k;
+        if (c >= h) {
+          c -= h;
           continue;
         }
-        c < k && (g = b ? g.slice(c, c + b) : g.slice(c), k = g.length, c = 0);
+        c < h && (g = b ? g.slice(c, c + b) : g.slice(c), h = g.length, c = 0);
       }
       if (e.length) {
-        k > b && (g = g.slice(0, b), k = g.length);
+        h > b && (g = g.slice(0, b), h = g.length);
       } else {
-        if (k >= b) {
-          return k > b && (g = g.slice(0, b)), d ? Xa(g) : g;
+        if (h >= b) {
+          return h > b && (g = g.slice(0, b)), d ? Xa(g) : g;
         }
       }
       e.push(g);
-      b -= k;
+      b -= h;
       if (!b) {
         break;
       }
@@ -1573,13 +1574,13 @@ function Xa(a) {
   }
   let d = [];
   c = [];
-  let e = 0, f = 0, g, k;
-  for (let h = 0, l; h < b.length; h++) {
-    if (l = b[h]) {
+  let e = 0, f = 0, g, h;
+  for (let k = 0, l; k < b.length; k++) {
+    if (l = b[k]) {
       e = l.limit || 0;
       f = l.offset || 0;
       g = l.enrich;
-      k = l.resolve;
+      h = l.resolve;
       let m;
       if (l.constructor === X) {
         m = l.result;
@@ -1596,19 +1597,19 @@ function Xa(a) {
       } else {
         continue;
       }
-      d[h] = m;
+      d[k] = m;
       m.then && c.push(m);
     }
   }
   if (c.length) {
     return Promise.all(c).then(function() {
       a.result.length && (d = d.concat([a.result]));
-      a.result = Ya(d, e, f, g, k, a.F);
-      return k ? a.result : a;
+      a.result = Ya(d, e, f, g, h, a.F);
+      return h ? a.result : a;
     });
   }
-  d.length && (this.result.length && (d = d.concat([this.result])), this.result = Ya(d, e, f, g, k, this.F));
-  return k ? this.result : this;
+  d.length && (this.result.length && (d = d.concat([this.result])), this.result = Ya(d, e, f, g, h, this.F));
+  return h ? this.result : this;
 };
 function Ya(a, b, c, d, e, f) {
   if (!a.length) {
@@ -1632,13 +1633,13 @@ function Ya(a, b, c, d, e, f) {
     }
     let d = [];
     a = [];
-    let e = 0, f = 0, g, k;
-    for (let h = 0, l; h < c.length; h++) {
-      if (l = c[h]) {
+    let e = 0, f = 0, g, h;
+    for (let k = 0, l; k < c.length; k++) {
+      if (l = c[k]) {
         e = l.limit || 0;
         f = l.offset || 0;
         g = l.resolve;
-        k = l.suggest;
+        h = l.suggest;
         let m;
         if (l.constructor === X) {
           m = l.result;
@@ -1655,7 +1656,7 @@ function Ya(a, b, c, d, e, f) {
         } else {
           continue;
         }
-        d[h] = m;
+        d[k] = m;
         m.then && a.push(m);
       }
     }
@@ -1665,12 +1666,12 @@ function Ya(a, b, c, d, e, f) {
     if (a.length) {
       return Promise.all(a).then(function() {
         d = [b.result].concat(d);
-        b.result = Za(d, e, f, g, b.F, k);
+        b.result = Za(d, e, f, g, b.F, h);
         return g ? b.result : b;
       });
     }
     d = [this.result].concat(d);
-    this.result = Za(d, e, f, g, this.F, k);
+    this.result = Za(d, e, f, g, this.F, h);
     return g ? this.result : this;
   }
   return this;
@@ -1680,9 +1681,9 @@ function Za(a, b, c, d, e, f) {
     return [];
   }
   let g = [];
-  C();
-  let k = ca(a);
-  return k ? Ba(a, k, b, c, f, e, d) : g;
+  B();
+  let h = ca(a);
+  return h ? Ba(a, h, b, c, f, e, d) : g;
 }
 ;X.prototype.xor = function() {
   const a = this;
@@ -1698,13 +1699,13 @@ function Za(a, b, c, d, e, f) {
   }
   let d = [];
   c = [];
-  let e = 0, f = 0, g, k;
-  for (let h = 0, l; h < b.length; h++) {
-    if (l = b[h]) {
+  let e = 0, f = 0, g, h;
+  for (let k = 0, l; k < b.length; k++) {
+    if (l = b[k]) {
       e = l.limit || 0;
       f = l.offset || 0;
       g = l.enrich;
-      k = l.resolve;
+      h = l.resolve;
       let m;
       if (l.constructor === X) {
         m = l.result;
@@ -1721,19 +1722,19 @@ function Za(a, b, c, d, e, f) {
       } else {
         continue;
       }
-      d[h] = m;
+      d[k] = m;
       m.then && c.push(m);
     }
   }
   if (c.length) {
     return Promise.all(c).then(function() {
       a.result.length && (d = [a.result].concat(d));
-      a.result = $a(d, e, f, g, !k, a.F);
-      return k ? a.result : a;
+      a.result = $a(d, e, f, g, !h, a.F);
+      return h ? a.result : a;
     });
   }
-  d.length && (this.result.length && (d = [this.result].concat(d)), this.result = $a(d, e, f, g, !k, a.F));
-  return k ? this.result : this;
+  d.length && (this.result.length && (d = [this.result].concat(d)), this.result = $a(d, e, f, g, !h, a.F));
+  return h ? this.result : this;
 };
 function $a(a, b, c, d, e, f) {
   if (!a.length) {
@@ -1743,13 +1744,13 @@ function $a(a, b, c, d, e, f) {
     return e ? W(a[0], b, c, d) : a[0];
   }
   d = [];
-  const g = C();
-  let k = 0;
-  for (let h = 0, l; h < a.length; h++) {
-    if (l = a[h]) {
+  const g = B();
+  let h = 0;
+  for (let k = 0, l; k < a.length; k++) {
+    if (l = a[k]) {
       for (let m = 0, q; m < l.length; m++) {
         if (q = l[m]) {
-          k < q.length && (k = q.length);
+          h < q.length && (h = q.length);
           for (let n = 0, p; n < q.length; n++) {
             p = q[n], g[p] ? g[p]++ : g[p] = 1;
           }
@@ -1757,23 +1758,23 @@ function $a(a, b, c, d, e, f) {
       }
     }
   }
-  for (let h = 0, l, m = 0; h < k; h++) {
+  for (let k = 0, l, m = 0; k < h; k++) {
     for (let q = 0, n; q < a.length; q++) {
       if (n = a[q]) {
-        if (l = n[h]) {
-          for (let p = 0, t; p < l.length; p++) {
-            if (t = l[p], 1 === g[t]) {
+        if (l = n[k]) {
+          for (let p = 0, r; p < l.length; p++) {
+            if (r = l[p], 1 === g[r]) {
               if (c) {
                 c--;
               } else {
                 if (e) {
-                  if (d.push(t), d.length === b) {
+                  if (d.push(r), d.length === b) {
                     return d;
                   }
                 } else {
-                  const r = h + (q ? f : 0);
-                  d[r] || (d[r] = []);
-                  d[r].push(t);
+                  const t = k + (q ? f : 0);
+                  d[t] || (d[t] = []);
+                  d[t].push(r);
                   if (++m === b) {
                     return d;
                   }
@@ -1802,28 +1803,28 @@ function $a(a, b, c, d, e, f) {
   let d = [];
   c = [];
   let e = 0, f = 0, g;
-  for (let k = 0, h; k < b.length; k++) {
-    if (h = b[k]) {
-      e = h.limit || 0;
-      f = h.offset || 0;
-      g = h.resolve;
+  for (let h = 0, k; h < b.length; h++) {
+    if (k = b[h]) {
+      e = k.limit || 0;
+      f = k.offset || 0;
+      g = k.resolve;
       let l;
-      if (h.constructor === X) {
-        l = h.result;
-      } else if (h.constructor === Array) {
-        l = h;
-      } else if (h.index) {
-        h.resolve = !1, l = h.index.search(h).result;
-      } else if (h.or) {
-        l = this.or(h.or);
-      } else if (h.and) {
-        l = this.and(h.and);
-      } else if (h.xor) {
-        l = this.xor(h.xor);
+      if (k.constructor === X) {
+        l = k.result;
+      } else if (k.constructor === Array) {
+        l = k;
+      } else if (k.index) {
+        k.resolve = !1, l = k.index.search(k).result;
+      } else if (k.or) {
+        l = this.or(k.or);
+      } else if (k.and) {
+        l = this.and(k.and);
+      } else if (k.xor) {
+        l = this.xor(k.xor);
       } else {
         continue;
       }
-      d[k] = l;
+      d[h] = l;
       l.then && c.push(l);
     }
   }
@@ -1842,10 +1843,10 @@ function ab(a, b, c, d) {
   }
   const e = [];
   a = new Set(a.flat().flat());
-  for (let f = 0, g, k = 0; f < this.result.length; f++) {
+  for (let f = 0, g, h = 0; f < this.result.length; f++) {
     if (g = this.result[f]) {
-      for (let h = 0, l; h < g.length; h++) {
-        if (l = g[h], !a.has(l)) {
+      for (let k = 0, l; k < g.length; k++) {
+        if (l = g[k], !a.has(l)) {
           if (c) {
             c--;
           } else {
@@ -1854,7 +1855,7 @@ function ab(a, b, c, d) {
                 return e;
               }
             } else {
-              if (e[f] || (e[f] = []), e[f].push(l), ++k === b) {
+              if (e[f] || (e[f] = []), e[f].push(l), ++h === b) {
                 return e;
               }
             }
@@ -1919,106 +1920,120 @@ X.prototype.resolve = function(a, b, c) {
 let bb = 1;
 M.prototype.search = function(a, b, c) {
   c || (!b && H(a) ? (c = a, a = "") : H(b) && (c = b, b = 0));
-  let d = [], e, f, g, k = 0, h, l, m, q, n;
-  c ? (a = c.query || a, b = c.limit || b, k = c.offset || 0, f = c.context, g = c.suggest, (h = bb && !1 !== c.resolve) || (bb = 0), l = h && c.enrich, q = c.boost, n = c.resolution, m = this.db && c.tag) : h = this.resolve || bb;
+  let d = [], e;
+  let f, g = 0, h, k, l, m, q;
+  if (c) {
+    a = c.query || a;
+    b = c.limit || b;
+    g = c.offset || 0;
+    var n = c.context;
+    f = c.suggest;
+    (h = bb && !1 !== c.resolve) || (bb = 0);
+    k = h && c.enrich;
+    m = c.boost;
+    q = c.resolution;
+    l = this.db && c.tag;
+  } else {
+    h = this.resolve || bb;
+  }
   let p = this.encoder.encode(a);
   e = p.length;
   b || !h || (b = 100);
   if (1 === e) {
-    return cb.call(this, p[0], "", b, k, h, l, m);
+    return cb.call(this, p[0], "", b, g, h, k, l);
   }
-  f = this.depth && !1 !== f;
-  if (2 === e && f && !g) {
-    return cb.call(this, p[0], p[1], b, k, h, l, m);
+  n = this.depth && !1 !== n;
+  if (2 === e && n && !f) {
+    return cb.call(this, p[0], p[1], b, g, h, k, l);
   }
-  let t = c = 0;
+  c = a = 0;
   if (1 < e) {
-    const x = C(), B = [];
-    for (let y = 0, v; y < e; y++) {
-      if ((v = p[y]) && !x[v]) {
-        if (g || this.db || Y(this, v)) {
-          B.push(v), x[v] = 1;
+    const v = B(), x = [];
+    for (let E = 0, y; E < e; E++) {
+      if ((y = p[E]) && !v[y]) {
+        if (f || this.db || Y(this, y)) {
+          x.push(y), v[y] = 1;
         } else {
           return h ? d : new X(d);
         }
-        const A = v.length;
-        c = Math.max(c, A);
-        t = t ? Math.min(t, A) : A;
+        const w = y.length;
+        a = Math.max(a, w);
+        c = c ? Math.min(c, w) : w;
       }
     }
-    p = B;
-    e = a.length;
+    p = x;
+    e = p.length;
   }
   if (!e) {
     return h ? d : new X(d);
   }
-  let r = 0, w;
+  let r = 0, t;
   if (1 === e) {
-    return cb.call(this, p[0], "", b, k, h, l, m);
+    return cb.call(this, p[0], "", b, g, h, k, l);
   }
-  if (2 === e && f && !g) {
-    return cb.call(this, p[0], p[1], b, k, h, l, m);
+  if (2 === e && n && !f) {
+    return cb.call(this, p[0], p[1], b, g, h, k, l);
   }
-  1 < e && (f ? (w = p[0], r = 1) : 9 < c && 3 < c / t && p.sort(aa));
-  n || 0 === n || (n = this.resolution);
+  1 < e && (n ? (t = p[0], r = 1) : 9 < a && 3 < a / c && p.sort(aa));
+  q || 0 === q || (q = this.resolution);
   if (this.db) {
-    if (this.db.search && (a = this.db.search(this, p, b, k, g, h, l, m), !1 !== a)) {
-      return a;
+    if (this.db.search && (n = this.db.search(this, p, b, g, f, h, k, l), !1 !== n)) {
+      return n;
     }
-    const x = this;
+    const v = this;
     return async function() {
-      for (let B, y; r < e; r++) {
-        y = p[r];
-        w ? (B = await Y(x, y, w, 0, 0, !1, !1), B = db(B, d, g, x.R), g && !1 === B && d.length || (w = y)) : (B = await Y(x, y, "", 0, 0, !1, !1), B = db(B, d, g, n));
-        if (B) {
-          return B;
+      for (let x, E; r < e; r++) {
+        E = p[r];
+        t ? (x = await Y(v, E, t, 0, 0, !1, !1), x = db(x, d, f, v.R), f && !1 === x && d.length || (t = E)) : (x = await Y(v, E, "", 0, 0, !1, !1), x = db(x, d, f, q));
+        if (x) {
+          return x;
         }
-        if (g && r === e - 1) {
-          let v = d.length;
-          if (!v) {
-            if (w) {
-              w = "";
+        if (f && r === e - 1) {
+          let y = d.length;
+          if (!y) {
+            if (t) {
+              t = "";
               r = -1;
               continue;
             }
             return d;
           }
-          if (1 === v) {
-            return h ? W(d[0], b, k) : new X(d[0]);
+          if (1 === y) {
+            return h ? W(d[0], b, g) : new X(d[0]);
           }
         }
       }
-      return h ? Ba(d, n, b, k, g, q, h) : new X(d[0]);
+      return h ? Ba(d, q, b, g, f, m, h) : new X(d[0]);
     }();
   }
-  for (let x, B; r < e; r++) {
-    B = p[r];
-    w ? (x = Y(this, B, w, 0, 0, !1, !1), x = db(x, d, g, this.R), g && !1 === x && d.length || (w = B)) : (x = Y(this, B, "", 0, 0, !1, !1), x = db(x, d, g, n));
-    if (x) {
-      return x;
+  for (let v, x; r < e; r++) {
+    x = p[r];
+    t ? (v = Y(this, x, t, 0, 0, !1, !1), v = db(v, d, f, this.R), f && !1 === v && d.length || (t = x)) : (v = Y(this, x, "", 0, 0, !1, !1), v = db(v, d, f, q));
+    if (v) {
+      return v;
     }
-    if (g && r === e - 1) {
-      a = d.length;
-      if (!a) {
-        if (w) {
-          w = "";
+    if (f && r === e - 1) {
+      n = d.length;
+      if (!n) {
+        if (t) {
+          t = "";
           r = -1;
           continue;
         }
         return d;
       }
-      if (1 === a) {
-        return h ? W(d[0], b, k) : new X(d[0]);
+      if (1 === n) {
+        return h ? W(d[0], b, g) : new X(d[0]);
       }
     }
   }
-  d = Ba(d, n, b, k, g, q, h);
+  d = Ba(d, q, b, g, f, m, h);
   return h ? d : new X(d);
 };
 function cb(a, b, c, d, e, f, g) {
   a = Y(this, a, b, c, d, e, f, g);
-  return this.db ? a.then(function(k) {
-    return e ? k : k && k.length ? e ? W(k, c, d) : new X(k) : e ? [] : new X([]);
+  return this.db ? a.then(function(h) {
+    return e ? h : h && h.length ? e ? W(h, c, d) : new X(h) : e ? [] : new X([]);
   }) : a && a.length ? e ? W(a, c, d) : new X(a) : e ? [] : new X([]);
 }
 function db(a, b, c, d) {
@@ -2035,13 +2050,13 @@ function db(a, b, c, d) {
   }
   return !c && e;
 }
-function Y(a, b, c, d, e, f, g, k) {
-  let h;
-  c && (h = a.bidirectional && b > c);
+function Y(a, b, c, d, e, f, g, h) {
+  let k;
+  c && (k = a.bidirectional && b > c);
   if (a.db) {
-    return c ? a.db.get(h ? c : b, h ? b : c, d, e, f, g, k) : a.db.get(b, "", d, e, f, g, k);
+    return c ? a.db.get(k ? c : b, k ? b : c, d, e, f, g, h) : a.db.get(b, "", d, e, f, g, h);
   }
-  a = c ? (a = a.ctx.get(h ? b : c)) && a.get(h ? c : b) : a.map.get(b);
+  a = c ? (a = a.ctx.get(k ? b : c)) && a.get(k ? c : b) : a.map.get(b);
   return a;
 }
 ;M.prototype.remove = function(a, b) {
@@ -2232,18 +2247,18 @@ u.serialize = function(a = !0) {
   b = "index.reg=new Set([" + b + "]);";
   d = "";
   for (var e of this.map.entries()) {
-    var f = e[0], g = e[1], k = "";
+    var f = e[0], g = e[1], h = "";
     for (let m = 0, q; m < g.length; m++) {
       q = g[m] || [""];
-      var h = "";
+      var k = "";
       for (var l = 0; l < q.length; l++) {
-        h += (h ? "," : "") + ("string" === c ? '"' + q[l] + '"' : q[l]);
+        k += (k ? "," : "") + ("string" === c ? '"' + q[l] + '"' : q[l]);
       }
-      h = "[" + h + "]";
-      k += (k ? "," : "") + h;
+      k = "[" + k + "]";
+      h += (h ? "," : "") + k;
     }
-    k = '["' + f + '",[' + k + "]]";
-    d += (d ? "," : "") + k;
+    h = '["' + f + '",[' + h + "]]";
+    d += (d ? "," : "") + h;
   }
   d = "index.map=new Map([" + d + "]);";
   e = "";
@@ -2252,20 +2267,20 @@ u.serialize = function(a = !0) {
     g = m[1];
     for (const q of g.entries()) {
       g = q[0];
-      k = q[1];
-      h = "";
-      for (let n = 0, p; n < k.length; n++) {
-        p = k[n] || [""];
+      h = q[1];
+      k = "";
+      for (let n = 0, p; n < h.length; n++) {
+        p = h[n] || [""];
         l = "";
-        for (let t = 0; t < p.length; t++) {
-          l += (l ? "," : "") + ("string" === c ? '"' + p[t] + '"' : p[t]);
+        for (let r = 0; r < p.length; r++) {
+          l += (l ? "," : "") + ("string" === c ? '"' + p[r] + '"' : p[r]);
         }
         l = "[" + l + "]";
-        h += (h ? "," : "") + l;
+        k += (k ? "," : "") + l;
       }
-      h = 'new Map([["' + g + '",[' + h + "]]])";
-      h = '["' + f + '",' + h + "]";
-      e += (e ? "," : "") + h;
+      k = 'new Map([["' + g + '",[' + k + "]]])";
+      k = '["' + f + '",' + k + "]";
+      e += (e ? "," : "") + k;
     }
   }
   e = "index.ctx=new Map([" + e + "]);";
@@ -2338,34 +2353,34 @@ u.clear = function() {
 u.get = function(a, b, c = 0, d = 0, e = !0, f = !1) {
   a = this.db.transaction(b ? "ctx" : "map", "readonly").objectStore(b ? "ctx" : "map").get(b ? b + ":" + a : a);
   const g = this;
-  return Z(a).then(function(k) {
-    let h = [];
-    if (!k || !k.length) {
-      return h;
+  return Z(a).then(function(h) {
+    let k = [];
+    if (!h || !h.length) {
+      return k;
     }
     if (e) {
-      if (!c && !d && 1 === k.length) {
-        return k[0];
+      if (!c && !d && 1 === h.length) {
+        return h[0];
       }
-      for (let l = 0, m; l < k.length; l++) {
-        if ((m = k[l]) && m.length) {
+      for (let l = 0, m; l < h.length; l++) {
+        if ((m = h[l]) && m.length) {
           if (d >= m.length) {
             d -= m.length;
             continue;
           }
           const q = c ? d + Math.min(m.length - d, c) : m.length;
           for (let n = d; n < q; n++) {
-            h.push(m[n]);
+            k.push(m[n]);
           }
           d = 0;
-          if (h.length === c) {
+          if (k.length === c) {
             break;
           }
         }
       }
-      return f ? g.enrich(h) : h;
+      return f ? g.enrich(k) : k;
     }
-    return k;
+    return h;
   });
 };
 u.tag = function(a, b = 0, c = 0, d = !1) {
@@ -2410,15 +2425,15 @@ u.transaction = function(a, b, c) {
   let e = this.db.transaction(a, b);
   this.h[a + ":" + b] = d = e.objectStore(a);
   return new Promise((f, g) => {
-    e.onerror = k => {
+    e.onerror = h => {
       this.h[a + ":" + b] = null;
       e.abort();
       e = d = null;
-      g(k);
+      g(h);
     };
-    e.oncomplete = k => {
+    e.oncomplete = h => {
       e = d = this.h[a + ":" + b] = null;
-      f(k || !0);
+      f(h || !0);
     };
     return c.call(this, d);
   });
@@ -2444,46 +2459,46 @@ u.commit = async function(a, b, c) {
     for (const e of a.map) {
       const f = e[0], g = e[1];
       g.length && (b ? d.put(g, f) : d.get(f).onsuccess = function() {
-        let k = this.result;
-        var h;
-        if (k && k.length) {
-          const l = Math.max(k.length, g.length);
+        let h = this.result;
+        var k;
+        if (h && h.length) {
+          const l = Math.max(h.length, g.length);
           for (let m = 0, q, n; m < l; m++) {
             if ((n = g[m]) && n.length) {
-              if ((q = k[m]) && q.length) {
-                for (h = 0; h < n.length; h++) {
-                  q.push(n[h]);
+              if ((q = h[m]) && q.length) {
+                for (k = 0; k < n.length; k++) {
+                  q.push(n[k]);
                 }
               } else {
-                k[m] = n;
+                h[m] = n;
               }
-              h = 1;
+              k = 1;
             }
           }
         } else {
-          k = g, h = 1;
+          h = g, k = 1;
         }
-        h && d.put(k, f);
+        k && d.put(h, f);
       });
     }
   }), await this.transaction("ctx", "readwrite", function(d) {
     for (const e of a.ctx) {
       const f = e[0], g = e[1];
-      for (const k of g) {
-        const h = k[0], l = k[1];
-        l.length && (b ? d.put(l, f + ":" + h) : d.get(f + ":" + h).onsuccess = function() {
+      for (const h of g) {
+        const k = h[0], l = h[1];
+        l.length && (b ? d.put(l, f + ":" + k) : d.get(f + ":" + k).onsuccess = function() {
           let m = this.result;
           var q;
           if (m && m.length) {
             const n = Math.max(m.length, l.length);
-            for (let p = 0, t, r; p < n; p++) {
-              if ((r = l[p]) && r.length) {
-                if ((t = m[p]) && t.length) {
-                  for (q = 0; q < r.length; q++) {
-                    t.push(r[q]);
+            for (let p = 0, r, t; p < n; p++) {
+              if ((t = l[p]) && t.length) {
+                if ((r = m[p]) && r.length) {
+                  for (q = 0; q < t.length; q++) {
+                    r.push(t[q]);
                   }
                 } else {
-                  m[p] = r;
+                  m[p] = t;
                 }
                 q = 1;
               }
@@ -2491,7 +2506,7 @@ u.commit = async function(a, b, c) {
           } else {
             m = l, q = 1;
           }
-          q && d.put(m, f + ":" + h);
+          q && d.put(m, f + ":" + k);
         });
       }
     }
@@ -2508,9 +2523,9 @@ u.commit = async function(a, b, c) {
     for (const e of a.tag) {
       const f = e[0], g = e[1];
       g.length && (d.get(f).onsuccess = function() {
-        let k = this.result;
-        k = k && k.length ? k.concat(g) : g;
-        d.put(k, f);
+        let h = this.result;
+        h = h && h.length ? h.concat(g) : g;
+        d.put(h, f);
       });
     }
   }), a.map.clear(), a.ctx.clear(), a.tag && a.tag.clear(), a.store && a.store.clear(), a.document || a.reg.clear());
@@ -2518,19 +2533,19 @@ u.commit = async function(a, b, c) {
 function kb(a, b, c) {
   const d = a.value;
   let e, f, g = 0;
-  for (let k = 0, h; k < d.length; k++) {
-    if (h = c ? d : d[k]) {
+  for (let h = 0, k; h < d.length; h++) {
+    if (k = c ? d : d[h]) {
       for (let l = 0, m, q; l < b.length; l++) {
-        if (q = b[l], m = h.indexOf(f ? parseInt(q, 10) : q), 0 > m && !f && "string" === typeof q && !isNaN(q) && (m = h.indexOf(parseInt(q, 10))) && (f = 1), 0 <= m) {
-          if (e = 1, 1 < h.length) {
-            h.splice(m, 1);
+        if (q = b[l], m = k.indexOf(f ? parseInt(q, 10) : q), 0 > m && !f && "string" === typeof q && !isNaN(q) && (m = k.indexOf(parseInt(q, 10))) && (f = 1), 0 <= m) {
+          if (e = 1, 1 < k.length) {
+            k.splice(m, 1);
           } else {
-            d[k] = [];
+            d[h] = [];
             break;
           }
         }
       }
-      g += h.length;
+      g += k.length;
     }
     if (c) {
       break;
diff --git a/dist/flexsearch.bundle.module.min.js b/dist/flexsearch.bundle.module.min.js
index dc459b4..92a9fc3 100644
--- a/dist/flexsearch.bundle.module.min.js
+++ b/dist/flexsearch.bundle.module.min.js
@@ -1,11 +1,11 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle/Module)
+ * FlexSearch.js v0.8.103 (Bundle/Module)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var u;function z(a,b,c){const d=typeof c,e=typeof a;if("undefined"!==d){if("undefined"!==e){if(c){if("function"===e&&d===e)return function(k){return a(c(k))};b=a.constructor;if(b===c.constructor){if(b===Array)return c.concat(a);if(b===Map){var f=new Map(c);for(var g of a)f.set(g[0],g[1]);return f}if(b===Set){g=new Set(c);for(f of a.values())g.add(f);return g}}}return a}return c}return"undefined"===e?b:a}function C(){return Object.create(null)}function aa(a,b){return b.length-a.length}
+var u;function z(a,b,c){const d=typeof c,e=typeof a;if("undefined"!==d){if("undefined"!==e){if(c){if("function"===e&&d===e)return function(h){return a(c(h))};b=a.constructor;if(b===c.constructor){if(b===Array)return c.concat(a);if(b===Map){var f=new Map(c);for(var g of a)f.set(g[0],g[1]);return f}if(b===Set){g=new Set(c);for(f of a.values())g.add(f);return g}}}return a}return c}return"undefined"===e?b:a}function B(){return Object.create(null)}function aa(a,b){return b.length-a.length}
 function F(a){return"string"===typeof a}function G(a){return"object"===typeof a}function ba(a){const b=[];for(const c of a.keys())b.push(c);return b}function J(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 ca(a){let b=0;for(let c=0,d;c<a.length;c++)(d=a[c])&&b<d.length&&(b=d.length);return b};var da=[["\u00aa","a"],["\u00b2","2"],["\u00b3","3"],["\u00b9","1"],["\u00ba","o"],["\u00bc","1\u20444"],["\u00bd","1\u20442"],["\u00be","3\u20444"],["\u00e0","a"],["\u00e1","a"],["\u00e2","a"],["\u00e3","a"],["\u00e4","a"],["\u00e5","a"],["\u00e7","c"],["\u00e8","e"],["\u00e9","e"],["\u00ea","e"],["\u00eb","e"],["\u00ec","i"],["\u00ed","i"],["\u00ee","i"],["\u00ef","i"],["\u00f1","n"],["\u00f2","o"],["\u00f3","o"],["\u00f4","o"],["\u00f5","o"],["\u00f6","o"],["\u00f9","u"],["\u00fa","u"],["\u00fb",
 "u"],["\u00fc","u"],["\u00fd","y"],["\u00ff","y"],["\u0101","a"],["\u0103","a"],["\u0105","a"],["\u0107","c"],["\u0109","c"],["\u010b","c"],["\u010d","c"],["\u010f","d"],["\u0113","e"],["\u0115","e"],["\u0117","e"],["\u0119","e"],["\u011b","e"],["\u011d","g"],["\u011f","g"],["\u0121","g"],["\u0123","g"],["\u0125","h"],["\u0129","i"],["\u012b","i"],["\u012d","i"],["\u012f","i"],["\u0133","ij"],["\u0135","j"],["\u0137","k"],["\u013a","l"],["\u013c","l"],["\u013e","l"],["\u0140","l"],["\u0144","n"],
 ["\u0146","n"],["\u0148","n"],["\u0149","n"],["\u014d","o"],["\u014f","o"],["\u0151","o"],["\u0155","r"],["\u0157","r"],["\u0159","r"],["\u015b","s"],["\u015d","s"],["\u015f","s"],["\u0161","s"],["\u0163","t"],["\u0165","t"],["\u0169","u"],["\u016b","u"],["\u016d","u"],["\u016f","u"],["\u0171","u"],["\u0173","u"],["\u0175","w"],["\u0177","y"],["\u017a","z"],["\u017c","z"],["\u017e","z"],["\u017f","s"],["\u01a1","o"],["\u01b0","u"],["\u01c6","dz"],["\u01c9","lj"],["\u01cc","nj"],["\u01ce","a"],["\u01d0",
@@ -20,66 +20,66 @@ u.addMatcher=function(a,b){if("object"===typeof a)return this.addReplacer(a,b);i
 u.addFilter=function(a){this.filter||(this.filter=new Set);this.filter.add(a);this.cache&&L(this);return this};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&&L(this);return this};u.addReplacer=function(a,b){"string"===typeof a&&(a=new RegExp(a,"g"));this.replacer||(this.replacer=[]);this.replacer.push(a,b||"");this.cache&&L(this);return this};
 function L(a){a.H.clear();a.I.clear()}
 u.encode=function(a){if(this.cache&&a.length<=this.B)if(this.L){if(this.H.has(a))return this.H.get(a)}else this.L=setTimeout(ka,50,this);this.normalize&&(a="function"===typeof this.normalize?this.normalize(a):ja?a.normalize("NFKD").replace(ja,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(ha,"$1 $2").replace(ia,"$1 $2").replace(fa,"$1 "));const b=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let c=[],
-d=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,k;f<d.length;f++){if(!(g=k=d[f]))continue;if(g.length<this.minlength)continue;if(b){c.push(g);continue}if(this.filter&&this.filter.has(g))continue;if(this.cache&&g.length<=this.M)if(this.L){var e=this.I.get(g);if(e||""===e){e&&c.push(e);continue}}else this.L=setTimeout(ka,50,this);let h;this.stemmer&&2<g.length&&(this.O||(this.O=new RegExp("(?!^)("+this.A+")$")),g=g.replace(this.O,l=>this.stemmer.get(l)),h=1);g&&h&&(g.length<this.minlength||
-this.filter&&this.filter.has(g))&&(g="");if(g&&(this.mapper||this.dedupe&&1<g.length)){e="";for(let l=0,m="",q,n;l<g.length;l++)q=g.charAt(l),q===m&&this.dedupe||((n=this.mapper&&this.mapper.get(q))||""===n?n===m&&this.dedupe||!(m=n)||(e+=n):e+=m=q);g=e}this.matcher&&1<g.length&&(this.N||(this.N=new RegExp("("+this.h+")","g")),g=g.replace(this.N,l=>this.matcher.get(l)));if(g&&this.replacer)for(e=0;g&&e<this.replacer.length;e+=2)g=g.replace(this.replacer[e],this.replacer[e+1]);this.cache&&k.length<=
-this.M&&(this.I.set(k,g),this.I.size>this.S&&(this.I.clear(),this.M=this.M/1.1|0));g&&c.push(g)}this.finalize&&(c=this.finalize(c)||c);this.cache&&a.length<=this.B&&(this.H.set(a,c),this.H.size>this.S&&(this.H.clear(),this.B=this.B/1.1|0));return c};function ka(a){a.L=null;a.H.clear();a.I.clear()};async function la(a){a=a.data;var b=self._index;const c=a.args;var d=a.task;switch(d){case "init":d=a.options||{};(b=a.factory)?(Function("return "+b)()(self),self._index=new self.FlexSearch.Index(d),delete self.FlexSearch):self._index=new M(d);postMessage({id:a.id});break;default:a=a.id,b=b[d].apply(b,c),postMessage("search"===d?{id:a,msg:b}:{id:a})}};let ma=0;
-function N(a={}){function b(g){function k(h){h=h.data||h;const l=h.id,m=l&&e.h[l];m&&(m(h.msg),delete e.h[l])}this.worker=g;this.h=C();if(this.worker){d?this.worker.on("message",k):this.worker.onmessage=k;if(a.config)return new Promise(function(h){e.h[++ma]=function(){h(e)};e.worker.postMessage({id:ma,task:"init",factory:c,options:a})});this.worker.postMessage({task:"init",factory:c,options:a});return this}}if(!this||this.constructor!==N)return new N(a);let c="undefined"!==typeof self?self._factory:"undefined"!==
+d=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,h;f<d.length;f++){if(!(g=h=d[f]))continue;if(g.length<this.minlength)continue;if(b){c.push(g);continue}if(this.filter&&this.filter.has(g))continue;if(this.cache&&g.length<=this.M)if(this.L){var e=this.I.get(g);if(e||""===e){e&&c.push(e);continue}}else this.L=setTimeout(ka,50,this);let k;this.stemmer&&2<g.length&&(this.O||(this.O=new RegExp("(?!^)("+this.A+")$")),g=g.replace(this.O,l=>this.stemmer.get(l)),k=1);g&&k&&(g.length<this.minlength||
+this.filter&&this.filter.has(g))&&(g="");if(g&&(this.mapper||this.dedupe&&1<g.length)){e="";for(let l=0,m="",p,n;l<g.length;l++)p=g.charAt(l),p===m&&this.dedupe||((n=this.mapper&&this.mapper.get(p))||""===n?n===m&&this.dedupe||!(m=n)||(e+=n):e+=m=p);g=e}this.matcher&&1<g.length&&(this.N||(this.N=new RegExp("("+this.h+")","g")),g=g.replace(this.N,l=>this.matcher.get(l)));if(g&&this.replacer)for(e=0;g&&e<this.replacer.length;e+=2)g=g.replace(this.replacer[e],this.replacer[e+1]);this.cache&&h.length<=
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+function Y(a,b,c,d,e,f,g,h){let k;c&&(k=a.bidirectional&&b>c);if(a.db)return c?a.db.get(k?c:b,k?b:c,d,e,f,g,h):a.db.get(b,"",d,e,f,g,h);a=c?(a=a.ctx.get(k?b:c))&&a.get(k?c:b):a.map.get(b);return a};M.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 d=0,e;d<c.length;d++){if(e=c[d])if(2>e.length)e.pop();else{const f=e.indexOf(a);f===c.length-1?e.pop():e.splice(f,1)}}else eb(this.map,a),this.depth&&eb(this.ctx,a);b||this.reg.delete(a)}this.db&&(this.commit_task.push({del:a}),this.T&&Wa(this));this.cache&&this.cache.remove(a);return this};
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-u.get=function(a,b,c=0,d=0,e=!0,f=!1){a=this.db.transaction(b?"ctx":"map","readonly").objectStore(b?"ctx":"map").get(b?b+":"+a:a);const g=this;return Z(a).then(function(k){let h=[];if(!k||!k.length)return h;if(e){if(!c&&!d&&1===k.length)return k[0];for(let l=0,m;l<k.length;l++)if((m=k[l])&&m.length){if(d>=m.length){d-=m.length;continue}const q=c?d+Math.min(m.length-d,c):m.length;for(let n=d;n<q;n++)h.push(m[n]);d=0;if(h.length===c)break}return f?g.enrich(h):h}return k})};
+u.get=function(a,b,c=0,d=0,e=!0,f=!1){a=this.db.transaction(b?"ctx":"map","readonly").objectStore(b?"ctx":"map").get(b?b+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(e){if(!c&&!d&&1===h.length)return h[0];for(let l=0,m;l<h.length;l++)if((m=h[l])&&m.length){if(d>=m.length){d-=m.length;continue}const p=c?d+Math.min(m.length-d,c):m.length;for(let n=d;n<p;n++)k.push(m[n]);d=0;if(k.length===c)break}return f?g.enrich(k):k}return h})};
 u.tag=function(a,b=0,c=0,d=!1){a=this.db.transaction("tag","readonly").objectStore("tag").get(a);const e=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 d?e.enrich(f):f})};
 u.enrich=function(a){"object"!==typeof a&&(a=[a]);const b=this.db.transaction("reg","readonly").objectStore("reg"),c=[];for(let d=0;d<a.length;d++)c[d]=Z(b.get(a[d]));return Promise.all(c).then(function(d){for(let e=0;e<d.length;e++)d[e]={id:a[e],doc:d[e]?JSON.parse(d[e]):null};return d})};u.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a)};u.search=null;u.info=function(){};
-u.transaction=function(a,b,c){let d=this.h[a+":"+b];if(d)return c.call(this,d);let e=this.db.transaction(a,b);this.h[a+":"+b]=d=e.objectStore(a);return new Promise((f,g)=>{e.onerror=k=>{this.h[a+":"+b]=null;e.abort();e=d=null;g(k)};e.oncomplete=k=>{e=d=this.h[a+":"+b]=null;f(k||!0)};return c.call(this,d)})};
-u.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let d=a.commit_task;a.commit_task=[];for(let e=0,f;e<d.length;e++)if(f=d[e],f.clear){await this.clear();b=!0;break}else d[e]=f.V;b||(c||(d=d.concat(ba(a.reg))),d.length&&await this.remove(d))}a.reg.size&&(await this.transaction("map","readwrite",function(d){for(const e of a.map){const f=e[0],g=e[1];g.length&&(b?d.put(g,f):d.get(f).onsuccess=function(){let k=this.result;var h;if(k&&k.length){const l=Math.max(k.length,g.length);
-for(let m=0,q,n;m<l;m++)if((n=g[m])&&n.length){if((q=k[m])&&q.length)for(h=0;h<n.length;h++)q.push(n[h]);else k[m]=n;h=1}}else k=g,h=1;h&&d.put(k,f)})}}),await this.transaction("ctx","readwrite",function(d){for(const e of a.ctx){const f=e[0],g=e[1];for(const k of g){const h=k[0],l=k[1];l.length&&(b?d.put(l,f+":"+h):d.get(f+":"+h).onsuccess=function(){let m=this.result;var q;if(m&&m.length){const n=Math.max(m.length,l.length);for(let p=0,r,t;p<n;p++)if((t=l[p])&&t.length){if((r=m[p])&&r.length)for(q=
-0;q<t.length;q++)r.push(t[q]);else m[p]=t;q=1}}else m=l,q=1;q&&d.put(m,f+":"+h)})}}}),a.store?await this.transaction("reg","readwrite",function(d){for(const e of a.store){const f=e[0],g=e[1];d.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(d){for(const e of a.reg.keys())d.put(1,e)}),a.tag&&await this.transaction("tag","readwrite",function(d){for(const e of a.tag){const f=e[0],g=e[1];g.length&&(d.get(f).onsuccess=function(){let k=this.result;
-k=k&&k.length?k.concat(g):g;d.put(k,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};
-function kb(a,b,c){const d=a.value;let e,f,g=0;for(let k=0,h;k<d.length;k++){if(h=c?d:d[k]){for(let l=0,m,q;l<b.length;l++)if(q=b[l],m=h.indexOf(f?parseInt(q,10):q),0>m&&!f&&"string"===typeof q&&!isNaN(q)&&(m=h.indexOf(parseInt(q,10)))&&(f=1),0<=m)if(e=1,1<h.length)h.splice(m,1);else{d[k]=[];break}g+=h.length}if(c)break}g?e&&a.update(d):a.delete();a.continue()}
+u.transaction=function(a,b,c){let d=this.h[a+":"+b];if(d)return c.call(this,d);let e=this.db.transaction(a,b);this.h[a+":"+b]=d=e.objectStore(a);return new Promise((f,g)=>{e.onerror=h=>{this.h[a+":"+b]=null;e.abort();e=d=null;g(h)};e.oncomplete=h=>{e=d=this.h[a+":"+b]=null;f(h||!0)};return c.call(this,d)})};
+u.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let d=a.commit_task;a.commit_task=[];for(let e=0,f;e<d.length;e++)if(f=d[e],f.clear){await this.clear();b=!0;break}else d[e]=f.V;b||(c||(d=d.concat(ba(a.reg))),d.length&&await this.remove(d))}a.reg.size&&(await this.transaction("map","readwrite",function(d){for(const e of a.map){const f=e[0],g=e[1];g.length&&(b?d.put(g,f):d.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
+for(let m=0,p,n;m<l;m++)if((n=g[m])&&n.length){if((p=h[m])&&p.length)for(k=0;k<n.length;k++)p.push(n[k]);else h[m]=n;k=1}}else h=g,k=1;k&&d.put(h,f)})}}),await this.transaction("ctx","readwrite",function(d){for(const e of a.ctx){const f=e[0],g=e[1];for(const h of g){const k=h[0],l=h[1];l.length&&(b?d.put(l,f+":"+k):d.get(f+":"+k).onsuccess=function(){let m=this.result;var p;if(m&&m.length){const n=Math.max(m.length,l.length);for(let q=0,r,t;q<n;q++)if((t=l[q])&&t.length){if((r=m[q])&&r.length)for(p=
+0;p<t.length;p++)r.push(t[p]);else m[q]=t;p=1}}else m=l,p=1;p&&d.put(m,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(d){for(const e of a.store){const f=e[0],g=e[1];d.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(d){for(const e of a.reg.keys())d.put(1,e)}),a.tag&&await this.transaction("tag","readwrite",function(d){for(const e of a.tag){const f=e[0],g=e[1];g.length&&(d.get(f).onsuccess=function(){let h=this.result;
+h=h&&h.length?h.concat(g):g;d.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 kb(a,b,c){const d=a.value;let e,f,g=0;for(let h=0,k;h<d.length;h++){if(k=c?d:d[h]){for(let l=0,m,p;l<b.length;l++)if(p=b[l],m=k.indexOf(f?parseInt(p,10):p),0>m&&!f&&"string"===typeof p&&!isNaN(p)&&(m=k.indexOf(parseInt(p,10)))&&(f=1),0<=m)if(e=1,1<k.length)k.splice(m,1);else{d[h]=[];break}g+=k.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(){const c=this.result;c&&kb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&kb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){const c=this.result;c&&kb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(let c=0;c<a.length;c++)b.delete(a[c])})])};
 function Z(a){return new Promise((b,c)=>{a.onsuccess=function(){b(this.result)};a.oncomplete=function(){b(this.result)};a.onerror=c;a=null})};export default {Index:M,Charset:Ta,Encoder:K,Document:T,Worker:N,Resolver:X,IndexedDB:jb,Language:{}};
 export const Index=M;export const Charset=Ta;export const Encoder=K;export const Document=T;export const Worker=N;export const Resolver=X;export const IndexedDB=jb;export const Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.compact.debug.js b/dist/flexsearch.compact.debug.js
index 4f4ce4c..4d629d7 100644
--- a/dist/flexsearch.compact.debug.js
+++ b/dist/flexsearch.compact.debug.js
@@ -1,12 +1,12 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle/Debug)
+ * FlexSearch.js v0.8.103 (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 w;
+var v;
 function B(a, b, c) {
   const e = typeof c, d = typeof a;
   if ("undefined" !== e) {
@@ -75,16 +75,16 @@ function I(a, b) {
 "\u03b8"], ["\u03d2", "\u03a5"], ["\u03d3", "\u03a5"], ["\u03d4", "\u03a5"], ["\u03d5", "\u03c6"], ["\u03d6", "\u03c0"], ["\u03f0", "\u03ba"], ["\u03f1", "\u03c1"], ["\u03f2", "\u03c2"], ["\u03f5", "\u03b5"], ["\u0439", "\u0438"], ["\u0450", "\u0435"], ["\u0451", "\u0435"], ["\u0453", "\u0433"], ["\u0457", "\u0456"], ["\u045c", "\u043a"], ["\u045d", "\u0438"], ["\u045e", "\u0443"], ["\u0477", "\u0475"], ["\u04c2", "\u0436"], ["\u04d1", "\u0430"], ["\u04d3", "\u0430"], ["\u04d7", "\u0435"], ["\u04db", 
 "\u04d9"], ["\u04dd", "\u0436"], ["\u04df", "\u0437"], ["\u04e3", "\u0438"], ["\u04e5", "\u0438"], ["\u04e7", "\u043e"], ["\u04eb", "\u04e9"], ["\u04ed", "\u044d"], ["\u04ef", "\u0443"], ["\u04f1", "\u0443"], ["\u04f3", "\u0443"], ["\u04f5", "\u0447"]];
 const ca = /[^\p{L}\p{N}]+/u, da = /(\d{3})/g, ea = /(\D)(\d{3})/g, fa = /(\d{3})(\D)/g, J = "".normalize && /[\u0300-\u036f]/g;
-function L(a) {
-  if (!this || this.constructor !== L) {
-    return new L(...arguments);
+function K(a) {
+  if (!this || this.constructor !== K) {
+    return new K(...arguments);
   }
   for (let b = 0; b < arguments.length; b++) {
     this.assign(arguments[b]);
   }
 }
-w = L.prototype;
-w.assign = function(a) {
+v = K.prototype;
+v.assign = function(a) {
   this.normalize = B(a.normalize, !0, this.normalize);
   let b = a.include, c = b || a.exclude || a.split;
   if ("object" === typeof c) {
@@ -143,7 +143,7 @@ w.assign = function(a) {
   }
   return this;
 };
-w.addMatcher = function(a, b) {
+v.addMatcher = function(a, b) {
   if ("object" === typeof a) {
     return this.addReplacer(a, b);
   }
@@ -157,7 +157,7 @@ w.addMatcher = function(a, b) {
   this.cache && M(this);
   return this;
 };
-w.addStemmer = function(a, b) {
+v.addStemmer = function(a, b) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, b);
   this.D += (this.D ? "|" : "") + a;
@@ -165,13 +165,13 @@ w.addStemmer = function(a, b) {
   this.cache && M(this);
   return this;
 };
-w.addFilter = function(a) {
+v.addFilter = function(a) {
   this.filter || (this.filter = new Set());
   this.filter.add(a);
   this.cache && M(this);
   return this;
 };
-w.addMapper = function(a, b) {
+v.addMapper = function(a, b) {
   if ("object" === typeof a) {
     return this.addReplacer(a, b);
   }
@@ -183,7 +183,7 @@ w.addMapper = function(a, b) {
   this.cache && M(this);
   return this;
 };
-w.addReplacer = function(a, b) {
+v.addReplacer = function(a, b) {
   "string" === typeof a && (a = new RegExp(a, "g"));
   this.replacer || (this.replacer = []);
   this.replacer.push(a, b || "");
@@ -194,7 +194,7 @@ function M(a) {
   a.F.clear();
   a.G.clear();
 }
-w.encode = function(a) {
+v.encode = function(a) {
   if (this.cache && a.length <= this.K) {
     if (this.J) {
       if (this.F.has(a)) {
@@ -469,7 +469,7 @@ function na(a, b, c, e, d, f, g, h) {
   c || (!b && H(a) ? (c = a, a = "") : H(b) && (c = b, b = 0));
   let d = [];
   var f = [];
-  let g, h, k, l, m, r, t = 0, q;
+  let g, h, k, l, m, r, t = 0, p;
   if (c) {
     c.constructor === Array && (c = {index:c});
     a = c.query || a;
@@ -479,31 +479,31 @@ function na(a, b, c, e, d, f, g, h) {
     m = this.tag && c.tag;
     g = this.store && c.enrich;
     k = c.suggest;
-    q = c.highlight;
+    p = c.highlight;
     b = c.limit || b;
     r = c.offset || 0;
     b || (b = 100);
     if (m) {
       m.constructor !== Array && (m = [m]);
       var u = [];
-      for (let x = 0, p; x < m.length; x++) {
-        p = m[x];
-        if (E(p)) {
+      for (let x = 0, q; x < m.length; x++) {
+        q = m[x];
+        if (E(q)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
-        if (p.field && p.tag) {
-          var v = p.tag;
-          if (v.constructor === Array) {
-            for (var y = 0; y < v.length; y++) {
-              u.push(p.field, v[y]);
+        if (q.field && q.tag) {
+          var w = q.tag;
+          if (w.constructor === Array) {
+            for (var y = 0; y < w.length; y++) {
+              u.push(q.field, w[y]);
             }
           } else {
-            u.push(p.field, v);
+            u.push(q.field, w);
           }
         } else {
-          v = Object.keys(p);
-          for (let D = 0, A, z; D < v.length; D++) {
-            if (A = v[D], z = p[A], z.constructor === Array) {
+          w = Object.keys(q);
+          for (let D = 0, A, z; D < w.length; D++) {
+            if (A = w[D], z = q[A], z.constructor === Array) {
               for (y = 0; y < z.length; y++) {
                 u.push(A, z[y]);
               }
@@ -525,8 +525,8 @@ function na(a, b, c, e, d, f, g, h) {
           }
         }
         return e.length ? Promise.all(e).then(function(x) {
-          for (let p = 0; p < x.length; p++) {
-            d[p].result = x[p];
+          for (let q = 0; q < x.length; q++) {
+            d[q].result = x[q];
           }
           return d;
         }) : d;
@@ -536,26 +536,26 @@ function na(a, b, c, e, d, f, g, h) {
   }
   l || (l = this.field);
   u = !e && (this.worker || this.db) && [];
-  for (let x = 0, p, D, A; x < l.length; x++) {
+  for (let x = 0, q, D, A; x < l.length; x++) {
     D = l[x];
     let z;
     E(D) || (z = D, D = z.field, a = z.query || a, b = z.limit || b, r = z.offset || r, k = z.suggest || k, g = this.store && (z.enrich || g));
     if (e) {
-      p = e[x];
+      q = e[x];
     } else {
-      if (v = z || c, y = this.index.get(D), m && (v.enrich = !1), u) {
-        u[x] = y.search(a, b, v);
-        v && g && (v.enrich = g);
+      if (w = z || c, y = this.index.get(D), m && (w.enrich = !1), u) {
+        u[x] = y.search(a, b, w);
+        w && g && (w.enrich = g);
         continue;
       } else {
-        p = y.search(a, b, v), v && g && (v.enrich = g);
+        q = y.search(a, b, w), w && g && (w.enrich = g);
       }
     }
-    A = p && p.length;
+    A = q && q.length;
     if (m && A) {
-      v = [];
+      w = [];
       y = 0;
-      for (let G = 0, F, K; G < m.length; G += 2) {
+      for (let G = 0, F, L; G < m.length; G += 2) {
         F = this.tag.get(m[G]);
         if (!F) {
           if (console.warn("Tag '" + m[G] + ":" + m[G + 1] + "' will be skipped because there is no field '" + m[G] + "'."), k) {
@@ -564,15 +564,15 @@ function na(a, b, c, e, d, f, g, h) {
             return d;
           }
         }
-        if (K = (F = F && F.get(m[G + 1])) && F.length) {
-          y++, v.push(F);
+        if (L = (F = F && F.get(m[G + 1])) && F.length) {
+          y++, w.push(F);
         } else if (!k) {
           return d;
         }
       }
       if (y) {
-        p = pa(p, v);
-        A = p.length;
+        q = pa(q, w);
+        A = q.length;
         if (!A && !k) {
           return d;
         }
@@ -580,15 +580,15 @@ function na(a, b, c, e, d, f, g, h) {
       }
     }
     if (A) {
-      f[t] = D, d.push(p), t++;
+      f[t] = D, d.push(q), t++;
     } else if (1 === l.length) {
       return d;
     }
   }
   if (u) {
     const x = this;
-    return Promise.all(u).then(function(p) {
-      return p.length ? x.search(a, b, c, p) : p;
+    return Promise.all(u).then(function(q) {
+      return q.length ? x.search(a, b, c, q) : q;
     });
   }
   if (!t) {
@@ -598,34 +598,34 @@ function na(a, b, c, e, d, f, g, h) {
     return d[0];
   }
   u = [];
-  for (let x = 0, p; x < f.length; x++) {
-    p = d[x];
-    g && p.length && !p[0].doc && p.length && (p = ra.call(this, p));
+  for (let x = 0, q; x < f.length; x++) {
+    q = d[x];
+    g && q.length && !q[0].doc && q.length && (q = ra.call(this, q));
     if (n) {
-      return p;
+      return q;
     }
-    d[x] = {field:f[x], result:p};
+    d[x] = {field:f[x], result:q};
   }
-  return h ? sa(d, b) : q ? ta(d, a, this.index, this.field, this.C, q) : d;
+  return h ? sa(d, b) : p ? ta(d, a, this.index, this.field, this.C, p) : d;
 };
 function ta(a, b, c, e, d, f) {
   let g, h, k;
-  for (let m = 0, r, t, q, n, u; m < a.length; m++) {
+  for (let m = 0, r, t, p, n, u; m < a.length; m++) {
     r = a[m].result;
     t = a[m].field;
     n = c.get(t);
-    q = n.encoder;
+    p = n.encoder;
     k = n.tokenize;
     u = d[e.indexOf(t)];
-    q !== g && (g = q, h = g.encode(b));
-    for (let v = 0; v < r.length; v++) {
+    p !== g && (g = p, h = g.encode(b));
+    for (let w = 0; w < r.length; w++) {
       let y = "";
-      var l = I(r[v].doc, u);
+      var l = I(r[w].doc, u);
       let x = g.encode(l);
       l = l.split(g.split);
-      for (let p = 0, D, A; p < x.length; p++) {
-        D = x[p];
-        A = l[p];
+      for (let q = 0, D, A; q < x.length; q++) {
+        D = x[q];
+        A = l[q];
         let z;
         for (let G = 0, F; G < h.length; G++) {
           if (F = h[G], "strict" === k) {
@@ -635,17 +635,17 @@ function ta(a, b, c, e, d, f) {
               break;
             }
           } else {
-            const K = D.indexOf(F);
-            if (-1 < K) {
-              y += (y ? " " : "") + A.substring(0, K) + f.replace("$1", A.substring(K, F.length)) + A.substring(K + F.length);
+            const L = D.indexOf(F);
+            if (-1 < L) {
+              y += (y ? " " : "") + A.substring(0, L) + f.replace("$1", A.substring(L, F.length)) + A.substring(L + F.length);
               z = !0;
               break;
             }
           }
         }
-        z || (y += (y ? " " : "") + l[p]);
+        z || (y += (y ? " " : "") + l[q]);
       }
-      r[v].highlight = y;
+      r[w].highlight = y;
     }
   }
   return a;
@@ -746,14 +746,14 @@ function S(a, b) {
   e < c.length && (c.length = e);
   return 1 < e ? c : c[0];
 }
-w = R.prototype;
-w.append = function(a, b) {
+v = R.prototype;
+v.append = function(a, b) {
   return this.add(a, b, !0);
 };
-w.update = function(a, b) {
+v.update = function(a, b) {
   return this.remove(a).add(a, b);
 };
-w.remove = function(a) {
+v.remove = function(a) {
   H(a) && (a = I(a, this.key));
   for (var b of this.index.values()) {
     b.remove(a, !0);
@@ -774,7 +774,7 @@ w.remove = function(a) {
   this.cache && this.cache.remove(a);
   return this;
 };
-w.clear = function() {
+v.clear = function() {
   for (const a of this.index.values()) {
     a.clear();
   }
@@ -786,24 +786,24 @@ w.clear = function() {
   this.store && this.store.clear();
   return this;
 };
-w.contain = function(a) {
+v.contain = function(a) {
   return this.reg.has(a);
 };
-w.cleanup = function() {
+v.cleanup = function() {
   for (const a of this.index.values()) {
     a.cleanup();
   }
   return this;
 };
-w.get = function(a) {
+v.get = function(a) {
   return this.store.get(a);
 };
-w.set = function(a, b) {
+v.set = function(a, b) {
   this.store.set(a, b);
   return this;
 };
-w.searchCache = ua;
-w.export = function(a, b, c = 0, e = 0) {
+v.searchCache = ua;
+v.export = function(a, b, c = 0, e = 0) {
   if (c < this.field.length) {
     const g = this.field[c];
     if ((b = this.index.get(g).export(a, g, c, e = 1)) && b.then) {
@@ -841,7 +841,7 @@ w.export = function(a, b, c = 0, e = 0) {
   }
   return Q.call(this, a, b, d, f, c, e);
 };
-w.import = function(a, b) {
+v.import = function(a, b) {
   if (b) {
     E(b) && (b = JSON.parse(b));
     a = a.split(".");
@@ -870,6 +870,7 @@ w.import = function(a, b) {
 ia(R.prototype);
 function ua(a, b, c) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new T());
   let e = this.cache.get(a);
   if (!e) {
     e = this.search(a, b, c);
@@ -942,18 +943,18 @@ U.prototype.add = function(a, b, c, e) {
     b = this.encoder.encode(b);
     if (e = b.length) {
       const l = C(), m = C(), r = this.depth, t = this.resolution;
-      for (let q = 0; q < e; q++) {
-        let n = b[this.rtl ? e - 1 - q : q];
+      for (let p = 0; p < e; p++) {
+        let n = b[this.rtl ? e - 1 - p : p];
         var d = n.length;
         if (d && (r || !m[n])) {
-          var f = this.score ? this.score(b, n, q, null, 0) : V(t, e, q), g = "";
+          var f = this.score ? this.score(b, n, p, null, 0) : V(t, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
                 for (f = 0; f < d; f++) {
                   for (var h = d; h > f; h--) {
                     g = n.substring(f, h);
-                    var k = this.score ? this.score(b, n, q, g, f) : V(t, e, q, d, f);
+                    var k = this.score ? this.score(b, n, p, g, f) : V(t, e, p, d, f);
                     W(this, m, g, k, a, c);
                   }
                 }
@@ -962,7 +963,7 @@ U.prototype.add = function(a, b, c, e) {
             case "reverse":
               if (1 < d) {
                 for (h = d - 1; 0 < h; h--) {
-                  g = n[h] + g, k = this.score ? this.score(b, n, q, g, h) : V(t, e, q, d, h), W(this, m, g, k, a, c);
+                  g = n[h] + g, k = this.score ? this.score(b, n, p, g, h) : V(t, e, p, d, h), W(this, m, g, k, a, c);
                 }
                 g = "";
               }
@@ -974,12 +975,12 @@ U.prototype.add = function(a, b, c, e) {
                 break;
               }
             default:
-              if (W(this, m, n, f, a, c), r && 1 < e && q < e - 1) {
-                for (d = C(), g = this.P, f = n, h = Math.min(r + 1, e - q), d[f] = 1, k = 1; k < h; k++) {
-                  if ((n = b[this.rtl ? e - 1 - q - k : q + k]) && !d[n]) {
+              if (W(this, m, n, f, a, c), r && 1 < e && p < e - 1) {
+                for (d = C(), g = this.P, f = n, h = Math.min(r + 1, e - p), d[f] = 1, k = 1; k < h; k++) {
+                  if ((n = b[this.rtl ? e - 1 - p - k : p + k]) && !d[n]) {
                     d[n] = 1;
-                    const u = this.score ? this.score(b, f, q, n, k) : V(g + (e / 2 > g ? 0 : 1), e, q, h - 1, k - 1), v = this.bidirectional && n > f;
-                    W(this, l, v ? f : n, u, a, c, v ? n : f);
+                    const u = this.score ? this.score(b, f, p, n, k) : V(g + (e / 2 > g ? 0 : 1), e, p, h - 1, k - 1), w = this.bidirectional && n > f;
+                    W(this, l, w ? f : n, u, a, c, w ? n : f);
                   }
                 }
               }
@@ -1044,65 +1045,66 @@ function V(a, b, c, e, d) {
   } else {
     h = !0;
   }
-  var l = this.encoder.encode(a);
-  c = l.length;
+  c = this.encoder.encode(a);
+  a = c.length;
   b || !h || (b = 100);
-  if (1 === c) {
-    return X.call(this, l[0], "", b, d);
+  if (1 === a) {
+    return X.call(this, c[0], "", b, d);
   }
   f = this.depth && !1 !== f;
-  if (2 === c && f && !g) {
-    return X.call(this, l[0], l[1], b, d);
+  if (2 === a && f && !g) {
+    return X.call(this, c[0], c[1], b, d);
   }
-  let m = h = 0;
-  if (1 < c) {
-    const t = C(), q = [];
-    for (let n = 0, u; n < c; n++) {
-      if ((u = l[n]) && !t[u]) {
-        if (g || Y(this, u)) {
-          q.push(u), t[u] = 1;
+  var l = h = 0;
+  if (1 < a) {
+    var m = C();
+    const t = [];
+    for (let p = 0, n; p < a; p++) {
+      if ((n = c[p]) && !m[n]) {
+        if (g || Y(this, n)) {
+          t.push(n), m[n] = 1;
         } else {
           return e;
         }
-        const v = u.length;
-        h = Math.max(h, v);
-        m = m ? Math.min(m, v) : v;
+        const u = n.length;
+        h = Math.max(h, u);
+        l = l ? Math.min(l, u) : u;
       }
     }
-    l = q;
-    c = a.length;
+    c = t;
+    a = c.length;
   }
-  if (!c) {
+  if (!a) {
     return e;
   }
-  a = 0;
-  if (1 === c) {
-    return X.call(this, l[0], "", b, d);
+  m = 0;
+  if (1 === a) {
+    return X.call(this, c[0], "", b, d);
   }
-  if (2 === c && f && !g) {
-    return X.call(this, l[0], l[1], b, d);
+  if (2 === a && f && !g) {
+    return X.call(this, c[0], c[1], b, d);
   }
-  if (1 < c) {
+  if (1 < a) {
     if (f) {
-      var r = l[0];
-      a = 1;
+      var r = c[0];
+      m = 1;
     } else {
-      9 < h && 3 < h / m && l.sort(aa);
+      9 < h && 3 < h / l && c.sort(aa);
     }
   }
   k || 0 === k || (k = this.resolution);
-  for (let t, q; a < c; a++) {
-    q = l[a];
-    r ? (t = Y(this, q, r), t = Ga(t, e, g, this.P), g && !1 === t && e.length || (r = q)) : (t = Y(this, q, ""), t = Ga(t, e, g, k));
+  for (let t, p; m < a; m++) {
+    p = c[m];
+    r ? (t = Y(this, p, r), t = Ga(t, e, g, this.P), g && !1 === t && e.length || (r = p)) : (t = Y(this, p, ""), t = Ga(t, e, g, k));
     if (t) {
       return t;
     }
-    if (g && a === c - 1) {
+    if (g && m === a - 1) {
       f = e.length;
       if (!f) {
         if (r) {
           r = "";
-          a = -1;
+          m = -1;
           continue;
         }
         return e;
@@ -1114,14 +1116,14 @@ function V(a, b, c, e, d) {
   }
   a: {
     r = g;
-    c = e.length;
+    f = e.length;
     g = [];
-    f = C();
-    for (let t = 0, q, n, u, v; t < k; t++) {
-      for (a = 0; a < c; a++) {
-        if (u = e[a], t < u.length && (q = u[t])) {
-          for (h = 0; h < q.length; h++) {
-            n = q[h], (l = f[n]) ? f[n]++ : (l = 0, f[n] = 1), v = g[l] || (g[l] = []), v.push(n);
+    a = C();
+    for (let t = 0, p, n, u, w; t < k; t++) {
+      for (h = 0; h < f; h++) {
+        if (u = e[h], t < u.length && (p = u[t])) {
+          for (l = 0; l < p.length; l++) {
+            n = p[l], (c = a[n]) ? a[n]++ : (c = 0, a[n] = 1), w = g[c] || (g[c] = []), w.push(n);
           }
         }
       }
@@ -1130,13 +1132,13 @@ function V(a, b, c, e, d) {
       if (r) {
         if (1 < g.length) {
           b: {
-            for (k = [], e = C(), r = g.length, l = r - 1; 0 <= l; l--) {
-              for (r = g[l], f = r.length, a = 0; a < f; a++) {
-                if (c = r[a], !e[c]) {
-                  if (e[c] = 1, d) {
+            for (k = [], e = C(), r = g.length, c = r - 1; 0 <= c; c--) {
+              for (r = g[c], a = r.length, h = 0; h < a; h++) {
+                if (f = r[h], !e[f]) {
+                  if (e[f] = 1, d) {
                     d--;
                   } else {
-                    if (k.push(c), k.length === b) {
+                    if (k.push(f), k.length === b) {
                       break b;
                     }
                   }
@@ -1149,7 +1151,7 @@ function V(a, b, c, e, d) {
         }
         g = k;
       } else {
-        if (k < c) {
+        if (k < f) {
           e = [];
           break a;
         }
@@ -1243,7 +1245,7 @@ function Ha(a, b) {
   }
   c = a.context;
   const e = !0 === c ? {depth:1} : c || {}, d = E(a.encoder) ? Da[a.encoder] : a.encode || a.encoder || va;
-  this.encoder = d.encode ? d : "object" === typeof d ? new L(d) : {encode:d};
+  this.encoder = d.encode ? d : "object" === typeof d ? new K(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = c = a.tokenize || "strict";
   this.depth = "strict" === c && e.depth || 0;
@@ -1258,21 +1260,21 @@ function Ha(a, b) {
   this.rtl = d.rtl || a.rtl || !1;
   this.cache = (c = a.cache || null) && new T(c);
 }
-w = U.prototype;
-w.clear = function() {
+v = U.prototype;
+v.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
   this.cache && this.cache.clear();
   return this;
 };
-w.append = function(a, b) {
+v.append = function(a, b) {
   return this.add(a, b, !0);
 };
-w.contain = function(a) {
+v.contain = function(a) {
   return this.reg.has(a);
 };
-w.update = function(a, b) {
+v.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);
 };
@@ -1290,7 +1292,7 @@ function Ia(a) {
   }
   return b;
 }
-w.cleanup = function() {
+v.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
@@ -1298,8 +1300,8 @@ w.cleanup = function() {
   this.depth && Ia(this.ctx);
   return this;
 };
-w.searchCache = ua;
-w.export = function(a, b, c, e = 0) {
+v.searchCache = ua;
+v.export = function(a, b, c, e = 0) {
   let d, f;
   switch(e) {
     case 0:
@@ -1323,7 +1325,7 @@ w.export = function(a, b, c, e = 0) {
   }
   return Q.call(this, a, b, d, f, c, e);
 };
-w.import = function(a, b) {
+v.import = function(a, b) {
   if (b) {
     switch(E(b) && (b = JSON.parse(b)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
@@ -1338,7 +1340,7 @@ w.import = function(a, b) {
     }
   }
 };
-w.serialize = function(a = !0) {
+v.serialize = function(a = !0) {
   if (!this.reg.size) {
     return "";
   }
@@ -1371,11 +1373,11 @@ w.serialize = function(a = !0) {
       g = r[0];
       h = r[1];
       k = "";
-      for (let t = 0, q; t < h.length; t++) {
-        q = h[t] || [""];
+      for (let t = 0, p; t < h.length; t++) {
+        p = h[t] || [""];
         l = "";
-        for (let n = 0; n < q.length; n++) {
-          l += (l ? "," : "") + ("string" === c ? '"' + q[n] + '"' : q[n]);
+        for (let n = 0; n < p.length; n++) {
+          l += (l ? "," : "") + ("string" === c ? '"' + p[n] + '"' : p[n]);
         }
         l = "[" + l + "]";
         k += (k ? "," : "") + l;
@@ -1389,7 +1391,7 @@ w.serialize = function(a = !0) {
   return a ? "function inject(index){" + b + e + d + "}" : b + e + d;
 };
 ia(U.prototype);
-const Ja = {Index:U, Charset:Da, Encoder:L, Document:R, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, Z = self;
+const Ja = {Index:U, Charset:Da, Encoder:K, Document:R, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, Z = self;
 let Ka;
 (Ka = Z.define) && Ka.amd ? Ka([], function() {
   return Ja;
diff --git a/dist/flexsearch.compact.min.js b/dist/flexsearch.compact.min.js
index 58b9de7..efedfe1 100644
--- a/dist/flexsearch.compact.min.js
+++ b/dist/flexsearch.compact.min.js
@@ -1,25 +1,25 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle)
+ * FlexSearch.js v0.8.103 (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 w;function B(a,b,c){const e=typeof c,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(c){if("function"===d&&e===d)return function(h){return a(c(h))};b=a.constructor;if(b===c.constructor){if(b===Array)return c.concat(a);if(b===Map){var g=new Map(c);for(var f of a)g.set(f[0],f[1]);return g}if(b===Set){f=new Set(c);for(g of a.values())f.add(g);return f}}}return a}return c}return"undefined"===d?b:a}function D(){return Object.create(null)}function aa(a,b){return b.length-a.length}
+(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var u;function B(a,b,c){const e=typeof c,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(c){if("function"===d&&e===d)return function(h){return a(c(h))};b=a.constructor;if(b===c.constructor){if(b===Array)return c.concat(a);if(b===Map){var g=new Map(c);for(var f of a)g.set(f[0],f[1]);return g}if(b===Set){f=new Set(c);for(g of a.values())f.add(g);return f}}}return a}return c}return"undefined"===d?b:a}function D(){return Object.create(null)}function aa(a,b){return b.length-a.length}
 function E(a){return"string"===typeof a}function G(a){return"object"===typeof a}function I(a,b){if(E(b))a=a[b];else for(let c=0;a&&c<b.length;c++)a=a[b[c]];return a};var ba=[["\u00aa","a"],["\u00b2","2"],["\u00b3","3"],["\u00b9","1"],["\u00ba","o"],["\u00bc","1\u20444"],["\u00bd","1\u20442"],["\u00be","3\u20444"],["\u00e0","a"],["\u00e1","a"],["\u00e2","a"],["\u00e3","a"],["\u00e4","a"],["\u00e5","a"],["\u00e7","c"],["\u00e8","e"],["\u00e9","e"],["\u00ea","e"],["\u00eb","e"],["\u00ec","i"],["\u00ed","i"],["\u00ee","i"],["\u00ef","i"],["\u00f1","n"],["\u00f2","o"],["\u00f3","o"],["\u00f4","o"],["\u00f5","o"],["\u00f6","o"],["\u00f9","u"],["\u00fa","u"],["\u00fb",
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 ["\u0146","n"],["\u0148","n"],["\u0149","n"],["\u014d","o"],["\u014f","o"],["\u0151","o"],["\u0155","r"],["\u0157","r"],["\u0159","r"],["\u015b","s"],["\u015d","s"],["\u015f","s"],["\u0161","s"],["\u0163","t"],["\u0165","t"],["\u0169","u"],["\u016b","u"],["\u016d","u"],["\u016f","u"],["\u0171","u"],["\u0173","u"],["\u0175","w"],["\u0177","y"],["\u017a","z"],["\u017c","z"],["\u017e","z"],["\u017f","s"],["\u01a1","o"],["\u01b0","u"],["\u01c6","dz"],["\u01c9","lj"],["\u01cc","nj"],["\u01ce","a"],["\u01d0",
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+n.length;h=Math.max(h,v);l=l?Math.min(l,v):v}c=t;a=c.length}if(!a)return e;m=0;if(1===a)return X.call(this,c[0],"",b,d);if(2===a&&g&&!f)return X.call(this,c[0],c[1],b,d);if(1<a)if(g){var r=c[0];m=1}else 9<h&&3<h/l&&c.sort(aa);k||0===k||(k=this.resolution);for(let t,p;m<a;m++){p=c[m];r?(t=Y(this,p,r),t=Ga(t,e,f,this.P),f&&!1===t&&e.length||(r=p)):(t=Y(this,p,""),t=Ga(t,e,f,k));if(t)return t;if(f&&m===a-1){g=e.length;if(!g){if(r){r="";m=-1;continue}return e}if(1===g)return Fa(e[0],b,d)}}a:{r=f;g=e.length;
+f=[];a=D();for(let t=0,p,n,v,w;t<k;t++)for(h=0;h<g;h++)if(v=e[h],t<v.length&&(p=v[t]))for(l=0;l<p.length;l++)n=p[l],(c=a[n])?a[n]++:(c=0,a[n]=1),w=f[c]||(f[c]=[]),w.push(n);if(k=f.length)if(r){if(1<f.length)b:for(k=[],e=D(),r=f.length,c=r-1;0<=c;c--)for(r=f[c],a=r.length,h=0;h<a;h++){if(g=r[h],!e[g])if(e[g]=1,d)d--;else if(k.push(g),k.length===b)break b}else k=(f=f[0]).length>b||d?f.slice(d,b+d):f;f=k}else{if(k<g){e=[];break a}f=f[k-1];if(b||d)if(f.length>b||d)f=f.slice(d,b+d)}e=f}return e};
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-function Ha(a,b){let c=0;if(a.constructor===Array)for(let e=0,d,g;e<a.length;e++){if((d=a[e])&&d.length)if(g=d.indexOf(b),0<=g){1<d.length?(d.splice(g,1),c++):delete a[e];break}else c++}else for(let e of a){const d=e[0],g=Ha(e[1],b);g?c+=g:a.delete(d)}return c};function U(a,b){if(!this||this.constructor!==U)return new U(a);if(a){var c=E(a)?a:a.preset;c&&(a=Object.assign({},Ea[c],a))}else a={};c=a.context;const e=!0===c?{depth:1}:c||{},d=E(a.encoder)?Da[a.encoder]:a.encode||a.encoder||va;this.encoder=d.encode?d:"object"===typeof d?new L(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=c=a.tokenize||"strict";this.depth="strict"===c&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;this.score=a.score||null;c=!1;this.map=
-new Map;this.ctx=new Map;this.reg=b||(this.fastupdate?new Map:new Set);this.P=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(c=a.cache||null)&&new T(c)}w=U.prototype;w.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};w.append=function(a,b){return this.add(a,b,!0)};w.contain=function(a){return this.reg.has(a)};w.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)};
-function Ia(a){let b=0;if(a.constructor===Array)for(let c=0,e;c<a.length;c++)(e=a[c])&&(b+=e.length);else for(const c of a){const e=c[0],d=Ia(c[1]);d?b+=d:a.delete(e)}return b}w.cleanup=function(){if(!this.fastupdate)return this;Ia(this.map);this.depth&&Ia(this.ctx);return this};w.searchCache=ua;
-w.export=function(a,b,c,e=0){let d,g;switch(e){case 0:d="reg";g=la(this.reg);break;case 1:d="cfg";g={};break;case 2:d="map";g=O(this.map,this.reg.size);break;case 3:d="ctx";g=ja(this.ctx,this.reg.size);break;default:return}return Q.call(this,a,b,d,g,c,e)};
-w.import=function(a,b){if(b)switch(E(b)&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=ma(b,this.reg);break;case "map":this.map=P(b,this.map);break;case "ctx":this.ctx=ka(b,this.ctx)}};
-w.serialize=function(a=!0){if(!this.reg.size)return"";let b="",c="";for(var e of this.reg.keys())c||(c=typeof e),b+=(b?",":"")+("string"===c?'"'+e+'"':e);b="index.reg=new Set(["+b+"]);";e="";for(var d of this.map.entries()){var g=d[0],f=d[1],h="";for(let m=0,r;m<f.length;m++){r=f[m]||[""];var k="";for(var l=0;l<r.length;l++)k+=(k?",":"")+("string"===c?'"'+r[l]+'"':r[l]);k="["+k+"]";h+=(h?",":"")+k}h='["'+g+'",['+h+"]]";e+=(e?",":"")+h}e="index.map=new Map(["+e+"]);";d="";for(const m of this.ctx.entries()){g=
-m[0];f=m[1];for(const r of f.entries()){f=r[0];h=r[1];k="";for(let t=0,p;t<h.length;t++){p=h[t]||[""];l="";for(let n=0;n<p.length;n++)l+=(l?",":"")+("string"===c?'"'+p[n]+'"':p[n]);l="["+l+"]";k+=(k?",":"")+l}k='new Map([["'+f+'",['+k+"]]])";k='["'+g+'",'+k+"]";d+=(d?",":"")+k}}d="index.ctx=new Map(["+d+"]);";return a?"function inject(index){"+b+e+d+"}":b+e+d};ia(U.prototype);const Ja={Index:U,Charset:Da,Encoder:L,Document:R,Worker:null,Resolver:null,IndexedDB:null,Language:{}},Z=self;let Ka;(Ka=Z.define)&&Ka.amd?Ka([],function(){return Ja}):"object"===typeof Z.exports?Z.exports=Ja:Z.FlexSearch=Ja;}(this||self));
+function Ha(a,b){let c=0;if(a.constructor===Array)for(let e=0,d,g;e<a.length;e++){if((d=a[e])&&d.length)if(g=d.indexOf(b),0<=g){1<d.length?(d.splice(g,1),c++):delete a[e];break}else c++}else for(let e of a){const d=e[0],g=Ha(e[1],b);g?c+=g:a.delete(d)}return c};function U(a,b){if(!this||this.constructor!==U)return new U(a);if(a){var c=E(a)?a:a.preset;c&&(a=Object.assign({},Ea[c],a))}else a={};c=a.context;const e=!0===c?{depth:1}:c||{},d=E(a.encoder)?Da[a.encoder]:a.encode||a.encoder||va;this.encoder=d.encode?d:"object"===typeof d?new K(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=c=a.tokenize||"strict";this.depth="strict"===c&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;this.score=a.score||null;c=!1;this.map=
+new Map;this.ctx=new Map;this.reg=b||(this.fastupdate?new Map:new Set);this.P=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(c=a.cache||null)&&new T(c)}u=U.prototype;u.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};u.append=function(a,b){return this.add(a,b,!0)};u.contain=function(a){return 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)};
+function Ia(a){let b=0;if(a.constructor===Array)for(let c=0,e;c<a.length;c++)(e=a[c])&&(b+=e.length);else for(const c of a){const e=c[0],d=Ia(c[1]);d?b+=d:a.delete(e)}return b}u.cleanup=function(){if(!this.fastupdate)return this;Ia(this.map);this.depth&&Ia(this.ctx);return this};u.searchCache=ua;
+u.export=function(a,b,c,e=0){let d,g;switch(e){case 0:d="reg";g=la(this.reg);break;case 1:d="cfg";g={};break;case 2:d="map";g=O(this.map,this.reg.size);break;case 3:d="ctx";g=ja(this.ctx,this.reg.size);break;default:return}return Q.call(this,a,b,d,g,c,e)};
+u.import=function(a,b){if(b)switch(E(b)&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=ma(b,this.reg);break;case "map":this.map=P(b,this.map);break;case "ctx":this.ctx=ka(b,this.ctx)}};
+u.serialize=function(a=!0){if(!this.reg.size)return"";let b="",c="";for(var e of this.reg.keys())c||(c=typeof e),b+=(b?",":"")+("string"===c?'"'+e+'"':e);b="index.reg=new Set(["+b+"]);";e="";for(var d of this.map.entries()){var g=d[0],f=d[1],h="";for(let m=0,r;m<f.length;m++){r=f[m]||[""];var k="";for(var l=0;l<r.length;l++)k+=(k?",":"")+("string"===c?'"'+r[l]+'"':r[l]);k="["+k+"]";h+=(h?",":"")+k}h='["'+g+'",['+h+"]]";e+=(e?",":"")+h}e="index.map=new Map(["+e+"]);";d="";for(const m of this.ctx.entries()){g=
+m[0];f=m[1];for(const r of f.entries()){f=r[0];h=r[1];k="";for(let t=0,p;t<h.length;t++){p=h[t]||[""];l="";for(let n=0;n<p.length;n++)l+=(l?",":"")+("string"===c?'"'+p[n]+'"':p[n]);l="["+l+"]";k+=(k?",":"")+l}k='new Map([["'+f+'",['+k+"]]])";k='["'+g+'",'+k+"]";d+=(d?",":"")+k}}d="index.ctx=new Map(["+d+"]);";return a?"function inject(index){"+b+e+d+"}":b+e+d};ia(U.prototype);const Ja={Index:U,Charset:Da,Encoder:K,Document:R,Worker:null,Resolver:null,IndexedDB:null,Language:{}},Z=self;let Ka;(Ka=Z.define)&&Ka.amd?Ka([],function(){return Ja}):"object"===typeof Z.exports?Z.exports=Ja:Z.FlexSearch=Ja;}(this||self));
diff --git a/dist/flexsearch.compact.module.debug.js b/dist/flexsearch.compact.module.debug.js
index 07b8686..95abd2b 100644
--- a/dist/flexsearch.compact.module.debug.js
+++ b/dist/flexsearch.compact.module.debug.js
@@ -1,11 +1,11 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle/Debug)
+ * FlexSearch.js v0.8.103 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var w;
+var v;
 function B(a, b, c) {
   const e = typeof c, d = typeof a;
   if ("undefined" !== e) {
@@ -74,16 +74,16 @@ function I(a, b) {
 "\u03b8"], ["\u03d2", "\u03a5"], ["\u03d3", "\u03a5"], ["\u03d4", "\u03a5"], ["\u03d5", "\u03c6"], ["\u03d6", "\u03c0"], ["\u03f0", "\u03ba"], ["\u03f1", "\u03c1"], ["\u03f2", "\u03c2"], ["\u03f5", "\u03b5"], ["\u0439", "\u0438"], ["\u0450", "\u0435"], ["\u0451", "\u0435"], ["\u0453", "\u0433"], ["\u0457", "\u0456"], ["\u045c", "\u043a"], ["\u045d", "\u0438"], ["\u045e", "\u0443"], ["\u0477", "\u0475"], ["\u04c2", "\u0436"], ["\u04d1", "\u0430"], ["\u04d3", "\u0430"], ["\u04d7", "\u0435"], ["\u04db", 
 "\u04d9"], ["\u04dd", "\u0436"], ["\u04df", "\u0437"], ["\u04e3", "\u0438"], ["\u04e5", "\u0438"], ["\u04e7", "\u043e"], ["\u04eb", "\u04e9"], ["\u04ed", "\u044d"], ["\u04ef", "\u0443"], ["\u04f1", "\u0443"], ["\u04f3", "\u0443"], ["\u04f5", "\u0447"]];
 const ca = /[^\p{L}\p{N}]+/u, da = /(\d{3})/g, ea = /(\D)(\d{3})/g, fa = /(\d{3})(\D)/g, J = "".normalize && /[\u0300-\u036f]/g;
-function L(a) {
-  if (!this || this.constructor !== L) {
-    return new L(...arguments);
+function K(a) {
+  if (!this || this.constructor !== K) {
+    return new K(...arguments);
   }
   for (let b = 0; b < arguments.length; b++) {
     this.assign(arguments[b]);
   }
 }
-w = L.prototype;
-w.assign = function(a) {
+v = K.prototype;
+v.assign = function(a) {
   this.normalize = B(a.normalize, !0, this.normalize);
   let b = a.include, c = b || a.exclude || a.split;
   if ("object" === typeof c) {
@@ -142,7 +142,7 @@ w.assign = function(a) {
   }
   return this;
 };
-w.addMatcher = function(a, b) {
+v.addMatcher = function(a, b) {
   if ("object" === typeof a) {
     return this.addReplacer(a, b);
   }
@@ -156,7 +156,7 @@ w.addMatcher = function(a, b) {
   this.cache && M(this);
   return this;
 };
-w.addStemmer = function(a, b) {
+v.addStemmer = function(a, b) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, b);
   this.D += (this.D ? "|" : "") + a;
@@ -164,13 +164,13 @@ w.addStemmer = function(a, b) {
   this.cache && M(this);
   return this;
 };
-w.addFilter = function(a) {
+v.addFilter = function(a) {
   this.filter || (this.filter = new Set());
   this.filter.add(a);
   this.cache && M(this);
   return this;
 };
-w.addMapper = function(a, b) {
+v.addMapper = function(a, b) {
   if ("object" === typeof a) {
     return this.addReplacer(a, b);
   }
@@ -182,7 +182,7 @@ w.addMapper = function(a, b) {
   this.cache && M(this);
   return this;
 };
-w.addReplacer = function(a, b) {
+v.addReplacer = function(a, b) {
   "string" === typeof a && (a = new RegExp(a, "g"));
   this.replacer || (this.replacer = []);
   this.replacer.push(a, b || "");
@@ -193,7 +193,7 @@ function M(a) {
   a.F.clear();
   a.G.clear();
 }
-w.encode = function(a) {
+v.encode = function(a) {
   if (this.cache && a.length <= this.K) {
     if (this.J) {
       if (this.F.has(a)) {
@@ -468,7 +468,7 @@ function S(a, b, c, e, d, f, g, h) {
   c || (!b && H(a) ? (c = a, a = "") : H(b) && (c = b, b = 0));
   let d = [];
   var f = [];
-  let g, h, k, l, m, r, t = 0, q;
+  let g, h, k, l, m, r, t = 0, p;
   if (c) {
     c.constructor === Array && (c = {index:c});
     a = c.query || a;
@@ -478,31 +478,31 @@ function S(a, b, c, e, d, f, g, h) {
     m = this.tag && c.tag;
     g = this.store && c.enrich;
     k = c.suggest;
-    q = c.highlight;
+    p = c.highlight;
     b = c.limit || b;
     r = c.offset || 0;
     b || (b = 100);
     if (m) {
       m.constructor !== Array && (m = [m]);
       var u = [];
-      for (let x = 0, p; x < m.length; x++) {
-        p = m[x];
-        if (E(p)) {
+      for (let x = 0, q; x < m.length; x++) {
+        q = m[x];
+        if (E(q)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
-        if (p.field && p.tag) {
-          var v = p.tag;
-          if (v.constructor === Array) {
-            for (var y = 0; y < v.length; y++) {
-              u.push(p.field, v[y]);
+        if (q.field && q.tag) {
+          var w = q.tag;
+          if (w.constructor === Array) {
+            for (var y = 0; y < w.length; y++) {
+              u.push(q.field, w[y]);
             }
           } else {
-            u.push(p.field, v);
+            u.push(q.field, w);
           }
         } else {
-          v = Object.keys(p);
-          for (let D = 0, A, z; D < v.length; D++) {
-            if (A = v[D], z = p[A], z.constructor === Array) {
+          w = Object.keys(q);
+          for (let D = 0, A, z; D < w.length; D++) {
+            if (A = w[D], z = q[A], z.constructor === Array) {
               for (y = 0; y < z.length; y++) {
                 u.push(A, z[y]);
               }
@@ -524,8 +524,8 @@ function S(a, b, c, e, d, f, g, h) {
           }
         }
         return e.length ? Promise.all(e).then(function(x) {
-          for (let p = 0; p < x.length; p++) {
-            d[p].result = x[p];
+          for (let q = 0; q < x.length; q++) {
+            d[q].result = x[q];
           }
           return d;
         }) : d;
@@ -535,26 +535,26 @@ function S(a, b, c, e, d, f, g, h) {
   }
   l || (l = this.field);
   u = !e && (this.worker || this.db) && [];
-  for (let x = 0, p, D, A; x < l.length; x++) {
+  for (let x = 0, q, D, A; x < l.length; x++) {
     D = l[x];
     let z;
     E(D) || (z = D, D = z.field, a = z.query || a, b = z.limit || b, r = z.offset || r, k = z.suggest || k, g = this.store && (z.enrich || g));
     if (e) {
-      p = e[x];
+      q = e[x];
     } else {
-      if (v = z || c, y = this.index.get(D), m && (v.enrich = !1), u) {
-        u[x] = y.search(a, b, v);
-        v && g && (v.enrich = g);
+      if (w = z || c, y = this.index.get(D), m && (w.enrich = !1), u) {
+        u[x] = y.search(a, b, w);
+        w && g && (w.enrich = g);
         continue;
       } else {
-        p = y.search(a, b, v), v && g && (v.enrich = g);
+        q = y.search(a, b, w), w && g && (w.enrich = g);
       }
     }
-    A = p && p.length;
+    A = q && q.length;
     if (m && A) {
-      v = [];
+      w = [];
       y = 0;
-      for (let G = 0, F, K; G < m.length; G += 2) {
+      for (let G = 0, F, L; G < m.length; G += 2) {
         F = this.tag.get(m[G]);
         if (!F) {
           if (console.warn("Tag '" + m[G] + ":" + m[G + 1] + "' will be skipped because there is no field '" + m[G] + "'."), k) {
@@ -563,15 +563,15 @@ function S(a, b, c, e, d, f, g, h) {
             return d;
           }
         }
-        if (K = (F = F && F.get(m[G + 1])) && F.length) {
-          y++, v.push(F);
+        if (L = (F = F && F.get(m[G + 1])) && F.length) {
+          y++, w.push(F);
         } else if (!k) {
           return d;
         }
       }
       if (y) {
-        p = oa(p, v);
-        A = p.length;
+        q = oa(q, w);
+        A = q.length;
         if (!A && !k) {
           return d;
         }
@@ -579,15 +579,15 @@ function S(a, b, c, e, d, f, g, h) {
       }
     }
     if (A) {
-      f[t] = D, d.push(p), t++;
+      f[t] = D, d.push(q), t++;
     } else if (1 === l.length) {
       return d;
     }
   }
   if (u) {
     const x = this;
-    return Promise.all(u).then(function(p) {
-      return p.length ? x.search(a, b, c, p) : p;
+    return Promise.all(u).then(function(q) {
+      return q.length ? x.search(a, b, c, q) : q;
     });
   }
   if (!t) {
@@ -597,34 +597,34 @@ function S(a, b, c, e, d, f, g, h) {
     return d[0];
   }
   u = [];
-  for (let x = 0, p; x < f.length; x++) {
-    p = d[x];
-    g && p.length && !p[0].doc && p.length && (p = qa.call(this, p));
+  for (let x = 0, q; x < f.length; x++) {
+    q = d[x];
+    g && q.length && !q[0].doc && q.length && (q = qa.call(this, q));
     if (n) {
-      return p;
+      return q;
     }
-    d[x] = {field:f[x], result:p};
+    d[x] = {field:f[x], result:q};
   }
-  return h ? ra(d, b) : q ? sa(d, a, this.index, this.field, this.C, q) : d;
+  return h ? ra(d, b) : p ? sa(d, a, this.index, this.field, this.C, p) : d;
 };
 function sa(a, b, c, e, d, f) {
   let g, h, k;
-  for (let m = 0, r, t, q, n, u; m < a.length; m++) {
+  for (let m = 0, r, t, p, n, u; m < a.length; m++) {
     r = a[m].result;
     t = a[m].field;
     n = c.get(t);
-    q = n.encoder;
+    p = n.encoder;
     k = n.tokenize;
     u = d[e.indexOf(t)];
-    q !== g && (g = q, h = g.encode(b));
-    for (let v = 0; v < r.length; v++) {
+    p !== g && (g = p, h = g.encode(b));
+    for (let w = 0; w < r.length; w++) {
       let y = "";
-      var l = I(r[v].doc, u);
+      var l = I(r[w].doc, u);
       let x = g.encode(l);
       l = l.split(g.split);
-      for (let p = 0, D, A; p < x.length; p++) {
-        D = x[p];
-        A = l[p];
+      for (let q = 0, D, A; q < x.length; q++) {
+        D = x[q];
+        A = l[q];
         let z;
         for (let G = 0, F; G < h.length; G++) {
           if (F = h[G], "strict" === k) {
@@ -634,17 +634,17 @@ function sa(a, b, c, e, d, f) {
               break;
             }
           } else {
-            const K = D.indexOf(F);
-            if (-1 < K) {
-              y += (y ? " " : "") + A.substring(0, K) + f.replace("$1", A.substring(K, F.length)) + A.substring(K + F.length);
+            const L = D.indexOf(F);
+            if (-1 < L) {
+              y += (y ? " " : "") + A.substring(0, L) + f.replace("$1", A.substring(L, F.length)) + A.substring(L + F.length);
               z = !0;
               break;
             }
           }
         }
-        z || (y += (y ? " " : "") + l[p]);
+        z || (y += (y ? " " : "") + l[q]);
       }
-      r[v].highlight = y;
+      r[w].highlight = y;
     }
   }
   return a;
@@ -745,14 +745,14 @@ function T(a, b) {
   e < c.length && (c.length = e);
   return 1 < e ? c : c[0];
 }
-w = R.prototype;
-w.append = function(a, b) {
+v = R.prototype;
+v.append = function(a, b) {
   return this.add(a, b, !0);
 };
-w.update = function(a, b) {
+v.update = function(a, b) {
   return this.remove(a).add(a, b);
 };
-w.remove = function(a) {
+v.remove = function(a) {
   H(a) && (a = I(a, this.key));
   for (var b of this.index.values()) {
     b.remove(a, !0);
@@ -773,7 +773,7 @@ w.remove = function(a) {
   this.cache && this.cache.remove(a);
   return this;
 };
-w.clear = function() {
+v.clear = function() {
   for (const a of this.index.values()) {
     a.clear();
   }
@@ -785,24 +785,24 @@ w.clear = function() {
   this.store && this.store.clear();
   return this;
 };
-w.contain = function(a) {
+v.contain = function(a) {
   return this.reg.has(a);
 };
-w.cleanup = function() {
+v.cleanup = function() {
   for (const a of this.index.values()) {
     a.cleanup();
   }
   return this;
 };
-w.get = function(a) {
+v.get = function(a) {
   return this.store.get(a);
 };
-w.set = function(a, b) {
+v.set = function(a, b) {
   this.store.set(a, b);
   return this;
 };
-w.searchCache = ta;
-w.export = function(a, b, c = 0, e = 0) {
+v.searchCache = ta;
+v.export = function(a, b, c = 0, e = 0) {
   if (c < this.field.length) {
     const g = this.field[c];
     if ((b = this.index.get(g).export(a, g, c, e = 1)) && b.then) {
@@ -840,7 +840,7 @@ w.export = function(a, b, c = 0, e = 0) {
   }
   return Q.call(this, a, b, d, f, c, e);
 };
-w.import = function(a, b) {
+v.import = function(a, b) {
   if (b) {
     E(b) && (b = JSON.parse(b));
     a = a.split(".");
@@ -869,6 +869,7 @@ w.import = function(a, b) {
 ia(R.prototype);
 function ta(a, b, c) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new U());
   let e = this.cache.get(a);
   if (!e) {
     e = this.search(a, b, c);
@@ -941,18 +942,18 @@ V.prototype.add = function(a, b, c, e) {
     b = this.encoder.encode(b);
     if (e = b.length) {
       const l = C(), m = C(), r = this.depth, t = this.resolution;
-      for (let q = 0; q < e; q++) {
-        let n = b[this.rtl ? e - 1 - q : q];
+      for (let p = 0; p < e; p++) {
+        let n = b[this.rtl ? e - 1 - p : p];
         var d = n.length;
         if (d && (r || !m[n])) {
-          var f = this.score ? this.score(b, n, q, null, 0) : W(t, e, q), g = "";
+          var f = this.score ? this.score(b, n, p, null, 0) : W(t, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
                 for (f = 0; f < d; f++) {
                   for (var h = d; h > f; h--) {
                     g = n.substring(f, h);
-                    var k = this.score ? this.score(b, n, q, g, f) : W(t, e, q, d, f);
+                    var k = this.score ? this.score(b, n, p, g, f) : W(t, e, p, d, f);
                     X(this, m, g, k, a, c);
                   }
                 }
@@ -961,7 +962,7 @@ V.prototype.add = function(a, b, c, e) {
             case "reverse":
               if (1 < d) {
                 for (h = d - 1; 0 < h; h--) {
-                  g = n[h] + g, k = this.score ? this.score(b, n, q, g, h) : W(t, e, q, d, h), X(this, m, g, k, a, c);
+                  g = n[h] + g, k = this.score ? this.score(b, n, p, g, h) : W(t, e, p, d, h), X(this, m, g, k, a, c);
                 }
                 g = "";
               }
@@ -973,12 +974,12 @@ V.prototype.add = function(a, b, c, e) {
                 break;
               }
             default:
-              if (X(this, m, n, f, a, c), r && 1 < e && q < e - 1) {
-                for (d = C(), g = this.P, f = n, h = Math.min(r + 1, e - q), d[f] = 1, k = 1; k < h; k++) {
-                  if ((n = b[this.rtl ? e - 1 - q - k : q + k]) && !d[n]) {
+              if (X(this, m, n, f, a, c), r && 1 < e && p < e - 1) {
+                for (d = C(), g = this.P, f = n, h = Math.min(r + 1, e - p), d[f] = 1, k = 1; k < h; k++) {
+                  if ((n = b[this.rtl ? e - 1 - p - k : p + k]) && !d[n]) {
                     d[n] = 1;
-                    const u = this.score ? this.score(b, f, q, n, k) : W(g + (e / 2 > g ? 0 : 1), e, q, h - 1, k - 1), v = this.bidirectional && n > f;
-                    X(this, l, v ? f : n, u, a, c, v ? n : f);
+                    const u = this.score ? this.score(b, f, p, n, k) : W(g + (e / 2 > g ? 0 : 1), e, p, h - 1, k - 1), w = this.bidirectional && n > f;
+                    X(this, l, w ? f : n, u, a, c, w ? n : f);
                   }
                 }
               }
@@ -1043,65 +1044,66 @@ function W(a, b, c, e, d) {
   } else {
     h = !0;
   }
-  var l = this.encoder.encode(a);
-  c = l.length;
+  c = this.encoder.encode(a);
+  a = c.length;
   b || !h || (b = 100);
-  if (1 === c) {
-    return Y.call(this, l[0], "", b, d);
+  if (1 === a) {
+    return Y.call(this, c[0], "", b, d);
   }
   f = this.depth && !1 !== f;
-  if (2 === c && f && !g) {
-    return Y.call(this, l[0], l[1], b, d);
+  if (2 === a && f && !g) {
+    return Y.call(this, c[0], c[1], b, d);
   }
-  let m = h = 0;
-  if (1 < c) {
-    const t = C(), q = [];
-    for (let n = 0, u; n < c; n++) {
-      if ((u = l[n]) && !t[u]) {
-        if (g || Z(this, u)) {
-          q.push(u), t[u] = 1;
+  var l = h = 0;
+  if (1 < a) {
+    var m = C();
+    const t = [];
+    for (let p = 0, n; p < a; p++) {
+      if ((n = c[p]) && !m[n]) {
+        if (g || Z(this, n)) {
+          t.push(n), m[n] = 1;
         } else {
           return e;
         }
-        const v = u.length;
-        h = Math.max(h, v);
-        m = m ? Math.min(m, v) : v;
+        const u = n.length;
+        h = Math.max(h, u);
+        l = l ? Math.min(l, u) : u;
       }
     }
-    l = q;
-    c = a.length;
+    c = t;
+    a = c.length;
   }
-  if (!c) {
+  if (!a) {
     return e;
   }
-  a = 0;
-  if (1 === c) {
-    return Y.call(this, l[0], "", b, d);
+  m = 0;
+  if (1 === a) {
+    return Y.call(this, c[0], "", b, d);
   }
-  if (2 === c && f && !g) {
-    return Y.call(this, l[0], l[1], b, d);
+  if (2 === a && f && !g) {
+    return Y.call(this, c[0], c[1], b, d);
   }
-  if (1 < c) {
+  if (1 < a) {
     if (f) {
-      var r = l[0];
-      a = 1;
+      var r = c[0];
+      m = 1;
     } else {
-      9 < h && 3 < h / m && l.sort(aa);
+      9 < h && 3 < h / l && c.sort(aa);
     }
   }
   k || 0 === k || (k = this.resolution);
-  for (let t, q; a < c; a++) {
-    q = l[a];
-    r ? (t = Z(this, q, r), t = Fa(t, e, g, this.P), g && !1 === t && e.length || (r = q)) : (t = Z(this, q, ""), t = Fa(t, e, g, k));
+  for (let t, p; m < a; m++) {
+    p = c[m];
+    r ? (t = Z(this, p, r), t = Fa(t, e, g, this.P), g && !1 === t && e.length || (r = p)) : (t = Z(this, p, ""), t = Fa(t, e, g, k));
     if (t) {
       return t;
     }
-    if (g && a === c - 1) {
+    if (g && m === a - 1) {
       f = e.length;
       if (!f) {
         if (r) {
           r = "";
-          a = -1;
+          m = -1;
           continue;
         }
         return e;
@@ -1113,14 +1115,14 @@ function W(a, b, c, e, d) {
   }
   a: {
     r = g;
-    c = e.length;
+    f = e.length;
     g = [];
-    f = C();
-    for (let t = 0, q, n, u, v; t < k; t++) {
-      for (a = 0; a < c; a++) {
-        if (u = e[a], t < u.length && (q = u[t])) {
-          for (h = 0; h < q.length; h++) {
-            n = q[h], (l = f[n]) ? f[n]++ : (l = 0, f[n] = 1), v = g[l] || (g[l] = []), v.push(n);
+    a = C();
+    for (let t = 0, p, n, u, w; t < k; t++) {
+      for (h = 0; h < f; h++) {
+        if (u = e[h], t < u.length && (p = u[t])) {
+          for (l = 0; l < p.length; l++) {
+            n = p[l], (c = a[n]) ? a[n]++ : (c = 0, a[n] = 1), w = g[c] || (g[c] = []), w.push(n);
           }
         }
       }
@@ -1129,13 +1131,13 @@ function W(a, b, c, e, d) {
       if (r) {
         if (1 < g.length) {
           b: {
-            for (k = [], e = C(), r = g.length, l = r - 1; 0 <= l; l--) {
-              for (r = g[l], f = r.length, a = 0; a < f; a++) {
-                if (c = r[a], !e[c]) {
-                  if (e[c] = 1, d) {
+            for (k = [], e = C(), r = g.length, c = r - 1; 0 <= c; c--) {
+              for (r = g[c], a = r.length, h = 0; h < a; h++) {
+                if (f = r[h], !e[f]) {
+                  if (e[f] = 1, d) {
                     d--;
                   } else {
-                    if (k.push(c), k.length === b) {
+                    if (k.push(f), k.length === b) {
                       break b;
                     }
                   }
@@ -1148,7 +1150,7 @@ function W(a, b, c, e, d) {
         }
         g = k;
       } else {
-        if (k < c) {
+        if (k < f) {
           e = [];
           break a;
         }
@@ -1242,7 +1244,7 @@ function Ga(a, b) {
   }
   c = a.context;
   const e = !0 === c ? {depth:1} : c || {}, d = E(a.encoder) ? Ca[a.encoder] : a.encode || a.encoder || ua;
-  this.encoder = d.encode ? d : "object" === typeof d ? new L(d) : {encode:d};
+  this.encoder = d.encode ? d : "object" === typeof d ? new K(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = c = a.tokenize || "strict";
   this.depth = "strict" === c && e.depth || 0;
@@ -1257,21 +1259,21 @@ function Ga(a, b) {
   this.rtl = d.rtl || a.rtl || !1;
   this.cache = (c = a.cache || null) && new U(c);
 }
-w = V.prototype;
-w.clear = function() {
+v = V.prototype;
+v.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
   this.cache && this.cache.clear();
   return this;
 };
-w.append = function(a, b) {
+v.append = function(a, b) {
   return this.add(a, b, !0);
 };
-w.contain = function(a) {
+v.contain = function(a) {
   return this.reg.has(a);
 };
-w.update = function(a, b) {
+v.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);
 };
@@ -1289,7 +1291,7 @@ function Ha(a) {
   }
   return b;
 }
-w.cleanup = function() {
+v.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
@@ -1297,8 +1299,8 @@ w.cleanup = function() {
   this.depth && Ha(this.ctx);
   return this;
 };
-w.searchCache = ta;
-w.export = function(a, b, c, e = 0) {
+v.searchCache = ta;
+v.export = function(a, b, c, e = 0) {
   let d, f;
   switch(e) {
     case 0:
@@ -1322,7 +1324,7 @@ w.export = function(a, b, c, e = 0) {
   }
   return Q.call(this, a, b, d, f, c, e);
 };
-w.import = function(a, b) {
+v.import = function(a, b) {
   if (b) {
     switch(E(b) && (b = JSON.parse(b)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
@@ -1337,7 +1339,7 @@ w.import = function(a, b) {
     }
   }
 };
-w.serialize = function(a = !0) {
+v.serialize = function(a = !0) {
   if (!this.reg.size) {
     return "";
   }
@@ -1370,11 +1372,11 @@ w.serialize = function(a = !0) {
       g = r[0];
       h = r[1];
       k = "";
-      for (let t = 0, q; t < h.length; t++) {
-        q = h[t] || [""];
+      for (let t = 0, p; t < h.length; t++) {
+        p = h[t] || [""];
         l = "";
-        for (let n = 0; n < q.length; n++) {
-          l += (l ? "," : "") + ("string" === c ? '"' + q[n] + '"' : q[n]);
+        for (let n = 0; n < p.length; n++) {
+          l += (l ? "," : "") + ("string" === c ? '"' + p[n] + '"' : p[n]);
         }
         l = "[" + l + "]";
         k += (k ? "," : "") + l;
@@ -1388,6 +1390,6 @@ w.serialize = function(a = !0) {
   return a ? "function inject(index){" + b + e + d + "}" : b + e + d;
 };
 ia(V.prototype);
-export default {Index:V, Charset:Ca, Encoder:L, Document:R, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
+export default {Index:V, Charset:Ca, Encoder:K, Document:R, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
 
-export const Index=V;export const  Charset=Ca;export const  Encoder=L;export const  Document=R;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
+export const Index=V;export const  Charset=Ca;export const  Encoder=K;export const  Document=R;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 12e136e..9a3cbab 100644
--- a/dist/flexsearch.compact.module.min.js
+++ b/dist/flexsearch.compact.module.min.js
@@ -1,25 +1,25 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle)
+ * FlexSearch.js v0.8.103 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
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-u.length;h=Math.max(h,v);m=m?Math.min(m,v):v}l=p;c=a.length}if(!c)return e;a=0;if(1===c)return Y.call(this,l[0],"",b,d);if(2===c&&g&&!f)return Y.call(this,l[0],l[1],b,d);if(1<c)if(g){var r=l[0];a=1}else 9<h&&3<h/m&&l.sort(aa);k||0===k||(k=this.resolution);for(let t,p;a<c;a++){p=l[a];r?(t=Z(this,p,r),t=Fa(t,e,f,this.P),f&&!1===t&&e.length||(r=p)):(t=Z(this,p,""),t=Fa(t,e,f,k));if(t)return t;if(f&&a===c-1){g=e.length;if(!g){if(r){r="";a=-1;continue}return e}if(1===g)return Ea(e[0],b,d)}}a:{r=f;c=e.length;
-f=[];g=D();for(let t=0,p,n,u,v;t<k;t++)for(a=0;a<c;a++)if(u=e[a],t<u.length&&(p=u[t]))for(h=0;h<p.length;h++)n=p[h],(l=g[n])?g[n]++:(l=0,g[n]=1),v=f[l]||(f[l]=[]),v.push(n);if(k=f.length)if(r){if(1<f.length)b:for(k=[],e=D(),r=f.length,l=r-1;0<=l;l--)for(r=f[l],g=r.length,a=0;a<g;a++){if(c=r[a],!e[c])if(e[c]=1,d)d--;else if(k.push(c),k.length===b)break b}else k=(f=f[0]).length>b||d?f.slice(d,b+d):f;f=k}else{if(k<c){e=[];break a}f=f[k-1];if(b||d)if(f.length>b||d)f=f.slice(d,b+d)}e=f}return e};
+d){for(h=d-1;0<h;h--)f=n[h]+f,k=this.score?this.score(b,n,p,f,h):W(t,e,p,d,h),X(this,m,f,k,a,c);f=""}case "forward":if(1<d){for(h=0;h<d;h++)f+=n[h],X(this,m,f,g,a,c);break}default:if(X(this,m,n,g,a,c),r&&1<e&&p<e-1)for(d=D(),f=this.P,g=n,h=Math.min(r+1,e-p),d[g]=1,k=1;k<h;k++)if((n=b[this.rtl?e-1-p-k:p+k])&&!d[n]){d[n]=1;const v=this.score?this.score(b,g,p,n,k):W(f+(e/2>f?0:1),e,p,h-1,k-1),w=this.bidirectional&&n>g;X(this,l,w?g:n,v,a,c,w?n:g)}}}}this.fastupdate||this.reg.add(a)}}return this};
+function X(a,b,c,e,d,g,f){let h=f?a.ctx:a.map,k;if(!b[c]||f&&!(k=b[c])[f])f?(b=k||(b[c]=D()),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=[]),h=h[e]||(h[e]=[]),g&&h.includes(d)||(h.push(d),a.fastupdate&&((b=a.reg.get(d))?b.push(h):a.reg.set(d,[h])))}function W(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};function Ea(a,b,c){if(1===a.length)return a=a[0],a=c||a.length>b?b?a.slice(c,c+b):a.slice(c):a;let e=[];for(let d=0,g,f;d<a.length;d++)if((g=a[d])&&(f=g.length)){if(c){if(c>=f){c-=f;continue}c<f&&(g=b?g.slice(c,c+b):g.slice(c),f=g.length,c=0)}if(e.length)f>b&&(g=g.slice(0,b),f=g.length);else if(f>=b)return f>b&&(g=g.slice(0,b)),g;e.push(g);b-=f;if(!b)break}return e.length?e=1<e.length?[].concat.apply([],e):e[0]:e};V.prototype.search=function(a,b,c){c||(!b&&G(a)?(c=a,a=""):G(b)&&(c=b,b=0));var e=[],d=0;if(c){a=c.query||a;b=c.limit||b;d=c.offset||0;var g=c.context;var f=c.suggest;var h=!0;var k=c.resolution}else h=!0;c=this.encoder.encode(a);a=c.length;b||!h||(b=100);if(1===a)return Y.call(this,c[0],"",b,d);g=this.depth&&!1!==g;if(2===a&&g&&!f)return Y.call(this,c[0],c[1],b,d);var l=h=0;if(1<a){var m=D();const t=[];for(let p=0,n;p<a;p++)if((n=c[p])&&!m[n]){if(f||Z(this,n))t.push(n),m[n]=1;else return e;const v=
+n.length;h=Math.max(h,v);l=l?Math.min(l,v):v}c=t;a=c.length}if(!a)return e;m=0;if(1===a)return Y.call(this,c[0],"",b,d);if(2===a&&g&&!f)return Y.call(this,c[0],c[1],b,d);if(1<a)if(g){var r=c[0];m=1}else 9<h&&3<h/l&&c.sort(aa);k||0===k||(k=this.resolution);for(let t,p;m<a;m++){p=c[m];r?(t=Z(this,p,r),t=Fa(t,e,f,this.P),f&&!1===t&&e.length||(r=p)):(t=Z(this,p,""),t=Fa(t,e,f,k));if(t)return t;if(f&&m===a-1){g=e.length;if(!g){if(r){r="";m=-1;continue}return e}if(1===g)return Ea(e[0],b,d)}}a:{r=f;g=e.length;
+f=[];a=D();for(let t=0,p,n,v,w;t<k;t++)for(h=0;h<g;h++)if(v=e[h],t<v.length&&(p=v[t]))for(l=0;l<p.length;l++)n=p[l],(c=a[n])?a[n]++:(c=0,a[n]=1),w=f[c]||(f[c]=[]),w.push(n);if(k=f.length)if(r){if(1<f.length)b:for(k=[],e=D(),r=f.length,c=r-1;0<=c;c--)for(r=f[c],a=r.length,h=0;h<a;h++){if(g=r[h],!e[g])if(e[g]=1,d)d--;else if(k.push(g),k.length===b)break b}else k=(f=f[0]).length>b||d?f.slice(d,b+d):f;f=k}else{if(k<g){e=[];break a}f=f[k-1];if(b||d)if(f.length>b||d)f=f.slice(d,b+d)}e=f}return e};
 function Y(a,b,c,e){return(a=Z(this,a,b))&&a.length?Ea(a,c,e):[]}function Fa(a,b,c,e){let d=[];if(a){e=Math.min(a.length,e);for(let g=0,f;g<e;g++)(f=a[g])&&f&&(d[g]=f);if(d.length){b.push(d);return}}return!c&&d}function Z(a,b,c){let e;c&&(e=a.bidirectional&&b>c);a=c?(a=a.ctx.get(e?b:c))&&a.get(e?c:b):a.map.get(b);return a};V.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 e=0,d;e<c.length;e++){if(d=c[e])if(2>d.length)d.pop();else{const g=d.indexOf(a);g===c.length-1?d.pop():d.splice(g,1)}}else Ga(this.map,a),this.depth&&Ga(this.ctx,a);b||this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
-function Ga(a,b){let c=0;if(a.constructor===Array)for(let e=0,d,g;e<a.length;e++){if((d=a[e])&&d.length)if(g=d.indexOf(b),0<=g){1<d.length?(d.splice(g,1),c++):delete a[e];break}else c++}else for(let e of a){const d=e[0],g=Ga(e[1],b);g?c+=g:a.delete(d)}return c};function V(a,b){if(!this||this.constructor!==V)return new V(a);if(a){var c=E(a)?a:a.preset;c&&(a=Object.assign({},Da[c],a))}else a={};c=a.context;const e=!0===c?{depth:1}:c||{},d=E(a.encoder)?Ca[a.encoder]:a.encode||a.encoder||ua;this.encoder=d.encode?d:"object"===typeof d?new L(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=c=a.tokenize||"strict";this.depth="strict"===c&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;this.score=a.score||null;c=!1;this.map=
-new Map;this.ctx=new Map;this.reg=b||(this.fastupdate?new Map:new Set);this.P=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(c=a.cache||null)&&new U(c)}w=V.prototype;w.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};w.append=function(a,b){return this.add(a,b,!0)};w.contain=function(a){return this.reg.has(a)};w.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)};
-function Ha(a){let b=0;if(a.constructor===Array)for(let c=0,e;c<a.length;c++)(e=a[c])&&(b+=e.length);else for(const c of a){const e=c[0],d=Ha(c[1]);d?b+=d:a.delete(e)}return b}w.cleanup=function(){if(!this.fastupdate)return this;Ha(this.map);this.depth&&Ha(this.ctx);return this};w.searchCache=ta;
-w.export=function(a,b,c,e=0){let d,g;switch(e){case 0:d="reg";g=la(this.reg);break;case 1:d="cfg";g={};break;case 2:d="map";g=O(this.map,this.reg.size);break;case 3:d="ctx";g=ja(this.ctx,this.reg.size);break;default:return}return Q.call(this,a,b,d,g,c,e)};
-w.import=function(a,b){if(b)switch(E(b)&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=ma(b,this.reg);break;case "map":this.map=P(b,this.map);break;case "ctx":this.ctx=ka(b,this.ctx)}};
-w.serialize=function(a=!0){if(!this.reg.size)return"";let b="",c="";for(var e of this.reg.keys())c||(c=typeof e),b+=(b?",":"")+("string"===c?'"'+e+'"':e);b="index.reg=new Set(["+b+"]);";e="";for(var d of this.map.entries()){var g=d[0],f=d[1],h="";for(let m=0,r;m<f.length;m++){r=f[m]||[""];var k="";for(var l=0;l<r.length;l++)k+=(k?",":"")+("string"===c?'"'+r[l]+'"':r[l]);k="["+k+"]";h+=(h?",":"")+k}h='["'+g+'",['+h+"]]";e+=(e?",":"")+h}e="index.map=new Map(["+e+"]);";d="";for(const m of this.ctx.entries()){g=
-m[0];f=m[1];for(const r of f.entries()){f=r[0];h=r[1];k="";for(let t=0,p;t<h.length;t++){p=h[t]||[""];l="";for(let n=0;n<p.length;n++)l+=(l?",":"")+("string"===c?'"'+p[n]+'"':p[n]);l="["+l+"]";k+=(k?",":"")+l}k='new Map([["'+f+'",['+k+"]]])";k='["'+g+'",'+k+"]";d+=(d?",":"")+k}}d="index.ctx=new Map(["+d+"]);";return a?"function inject(index){"+b+e+d+"}":b+e+d};ia(V.prototype);export default {Index:V,Charset:Ca,Encoder:L,Document:R,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
-export const Index=V;export const Charset=Ca;export const Encoder=L;export const Document=R;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
+function Ga(a,b){let c=0;if(a.constructor===Array)for(let e=0,d,g;e<a.length;e++){if((d=a[e])&&d.length)if(g=d.indexOf(b),0<=g){1<d.length?(d.splice(g,1),c++):delete a[e];break}else c++}else for(let e of a){const d=e[0],g=Ga(e[1],b);g?c+=g:a.delete(d)}return c};function V(a,b){if(!this||this.constructor!==V)return new V(a);if(a){var c=E(a)?a:a.preset;c&&(a=Object.assign({},Da[c],a))}else a={};c=a.context;const e=!0===c?{depth:1}:c||{},d=E(a.encoder)?Ca[a.encoder]:a.encode||a.encoder||ua;this.encoder=d.encode?d:"object"===typeof d?new K(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=c=a.tokenize||"strict";this.depth="strict"===c&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;this.score=a.score||null;c=!1;this.map=
+new Map;this.ctx=new Map;this.reg=b||(this.fastupdate?new Map:new Set);this.P=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(c=a.cache||null)&&new U(c)}u=V.prototype;u.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};u.append=function(a,b){return this.add(a,b,!0)};u.contain=function(a){return 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)};
+function Ha(a){let b=0;if(a.constructor===Array)for(let c=0,e;c<a.length;c++)(e=a[c])&&(b+=e.length);else for(const c of a){const e=c[0],d=Ha(c[1]);d?b+=d:a.delete(e)}return b}u.cleanup=function(){if(!this.fastupdate)return this;Ha(this.map);this.depth&&Ha(this.ctx);return this};u.searchCache=ta;
+u.export=function(a,b,c,e=0){let d,g;switch(e){case 0:d="reg";g=la(this.reg);break;case 1:d="cfg";g={};break;case 2:d="map";g=O(this.map,this.reg.size);break;case 3:d="ctx";g=ja(this.ctx,this.reg.size);break;default:return}return Q.call(this,a,b,d,g,c,e)};
+u.import=function(a,b){if(b)switch(E(b)&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=ma(b,this.reg);break;case "map":this.map=P(b,this.map);break;case "ctx":this.ctx=ka(b,this.ctx)}};
+u.serialize=function(a=!0){if(!this.reg.size)return"";let b="",c="";for(var e of this.reg.keys())c||(c=typeof e),b+=(b?",":"")+("string"===c?'"'+e+'"':e);b="index.reg=new Set(["+b+"]);";e="";for(var d of this.map.entries()){var g=d[0],f=d[1],h="";for(let m=0,r;m<f.length;m++){r=f[m]||[""];var k="";for(var l=0;l<r.length;l++)k+=(k?",":"")+("string"===c?'"'+r[l]+'"':r[l]);k="["+k+"]";h+=(h?",":"")+k}h='["'+g+'",['+h+"]]";e+=(e?",":"")+h}e="index.map=new Map(["+e+"]);";d="";for(const m of this.ctx.entries()){g=
+m[0];f=m[1];for(const r of f.entries()){f=r[0];h=r[1];k="";for(let t=0,p;t<h.length;t++){p=h[t]||[""];l="";for(let n=0;n<p.length;n++)l+=(l?",":"")+("string"===c?'"'+p[n]+'"':p[n]);l="["+l+"]";k+=(k?",":"")+l}k='new Map([["'+f+'",['+k+"]]])";k='["'+g+'",'+k+"]";d+=(d?",":"")+k}}d="index.ctx=new Map(["+d+"]);";return a?"function inject(index){"+b+e+d+"}":b+e+d};ia(V.prototype);export default {Index:V,Charset:Ca,Encoder:K,Document:R,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
+export const Index=V;export const Charset=Ca;export const Encoder=K;export const Document=R;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 bcd5f6d..58bad62 100644
--- a/dist/flexsearch.es5.debug.js
+++ b/dist/flexsearch.es5.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.102 (ES5/Debug)
+ * FlexSearch.js v0.8.103 (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 w(a) {
   var b = "undefined" != typeof Symbol && Symbol.iterator && a[Symbol.iterator];
   if (b) {
     return b.call(a);
@@ -41,7 +41,7 @@ function ca(a) {
   throw Error("Cannot find global object");
 }
 var C = ca(this);
-function E(a, b) {
+function F(a, b) {
   if (b) {
     a: {
       var c = C;
@@ -109,7 +109,7 @@ ja.prototype.return = function(a) {
   this.B = {return:a};
   this.h = this.L;
 };
-function F(a, b, c) {
+function G(a, b, c) {
   a.h = c;
   return {value:b};
 }
@@ -126,7 +126,7 @@ function na(a, b) {
     }, b, a.h.return);
   }
   a.h.return(b);
-  return pa(a);
+  return H(a);
 }
 function oa(a, b, c, d) {
   try {
@@ -139,13 +139,13 @@ function oa(a, b, c, d) {
     }
     var g = e.value;
   } catch (f) {
-    return a.h.A = null, la(a.h, f), pa(a);
+    return a.h.A = null, la(a.h, f), H(a);
   }
   a.h.A = null;
   d.call(a.h, g);
-  return pa(a);
+  return H(a);
 }
-function pa(a) {
+function H(a) {
   for (; a.h.h;) {
     try {
       var b = a.A(a.h);
@@ -167,15 +167,15 @@ function pa(a) {
   }
   return {value:void 0, done:!0};
 }
-function qa(a) {
+function pa(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));
+    a.h.A ? b = oa(a, a.h.A.next, b, a.h.G) : (a.h.G(b), b = H(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));
+    a.h.A ? b = oa(a, a.h.A["throw"], b, a.h.G) : (la(a.h, b), b = H(a));
     return b;
   };
   this.return = function(b) {
@@ -185,12 +185,12 @@ function qa(a) {
     return this;
   };
 }
-function ra(a, b) {
-  b = new qa(new ma(b));
+function qa(a, b) {
+  b = new pa(new ma(b));
   ia && a.prototype && ia(b, a.prototype);
   return b;
 }
-function sa(a) {
+function ra(a) {
   function b(d) {
     return a.next(d);
   }
@@ -204,10 +204,10 @@ function sa(a) {
     g(a.next());
   });
 }
-function ta(a) {
-  return sa(new qa(new ma(a)));
+function sa(a) {
+  return ra(new pa(new ma(a)));
 }
-E("Symbol", function(a) {
+F("Symbol", function(a) {
   function b(g) {
     if (this instanceof b) {
       throw new TypeError("Symbol is not a constructor");
@@ -227,7 +227,7 @@ E("Symbol", function(a) {
   var d = "jscomp_symbol_" + (1E9 * Math.random() >>> 0) + "_", e = 0;
   return b;
 });
-E("Symbol.iterator", function(a) {
+F("Symbol.iterator", function(a) {
   if (a) {
     return a;
   }
@@ -235,19 +235,19 @@ E("Symbol.iterator", function(a) {
   for (var b = "Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array".split(" "), c = 0; c < b.length; c++) {
     var d = C[b[c]];
     "function" === typeof d && "function" != typeof d.prototype[a] && ba(d.prototype, a, {configurable:!0, writable:!0, value:function() {
-      return ua(aa(this));
+      return ta(aa(this));
     }});
   }
   return a;
 });
-function ua(a) {
+function ta(a) {
   a = {next:a};
   a[Symbol.iterator] = function() {
     return this;
   };
   return a;
 }
-E("Promise", function(a) {
+F("Promise", function(a) {
   function b(f) {
     this.A = 0;
     this.B = void 0;
@@ -451,13 +451,13 @@ E("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 = w(f), m = l.next(); !m.done; m = l.next()) {
         d(m.value).V(h, k);
       }
     });
   };
   b.all = function(f) {
-    var h = x(f), k = h.next();
+    var h = w(f), k = h.next();
     return k.done ? d([]) : new b(function(l, m) {
       function n(r) {
         return function(v) {
@@ -474,7 +474,7 @@ E("Promise", function(a) {
   };
   return b;
 });
-function va(a, b) {
+function ua(a, b) {
   a instanceof String && (a += "");
   var c = 0, d = !1, e = {next:function() {
     if (!d && c < a.length) {
@@ -489,9 +489,9 @@ function va(a, b) {
   };
   return e;
 }
-E("Array.prototype.values", function(a) {
+F("Array.prototype.values", function(a) {
   return a ? a : function() {
-    return va(this, function(b, c) {
+    return ua(this, function(b, c) {
       return c;
     });
   };
@@ -499,11 +499,11 @@ E("Array.prototype.values", function(a) {
 function I(a, b) {
   return Object.prototype.hasOwnProperty.call(a, b);
 }
-E("WeakMap", function(a) {
+F("WeakMap", function(a) {
   function b(k) {
     this.h = (h += Math.random() + 1).toString();
     if (k) {
-      k = x(k);
+      k = w(k);
       for (var l; !(l = k.next()).done;) {
         l = l.value, this.set(l[0], l[1]);
       }
@@ -576,14 +576,14 @@ E("WeakMap", function(a) {
   };
   return b;
 });
-E("Map", function(a) {
+F("Map", function(a) {
   function b() {
     var h = {};
     return h.K = h.next = h.head = h;
   }
   function c(h, k) {
     var l = h[1];
-    return ua(function() {
+    return ta(function() {
       if (l) {
         for (; l.head != h[1];) {
           l = l.K;
@@ -615,7 +615,7 @@ E("Map", function(a) {
     this[1] = b();
     this.size = 0;
     if (h) {
-      h = x(h);
+      h = w(h);
       for (var k; !(k = h.next()).done;) {
         k = k.value, this.set(k[0], k[1]);
       }
@@ -626,7 +626,7 @@ E("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(w([[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;
       }
@@ -689,18 +689,18 @@ E("Map", function(a) {
   var f = 0;
   return e;
 });
-E("Array.prototype.keys", function(a) {
+F("Array.prototype.keys", function(a) {
   return a ? a : function() {
-    return va(this, function(b) {
+    return ua(this, function(b) {
       return b;
     });
   };
 });
-E("Set", function(a) {
+F("Set", function(a) {
   function b(c) {
     this.h = new Map();
     if (c) {
-      c = x(c);
+      c = w(c);
       for (var d; !(d = c.next()).done;) {
         this.add(d.value);
       }
@@ -712,7 +712,7 @@ E("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(w([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;
       }
@@ -762,19 +762,19 @@ E("Set", function(a) {
   };
   return b;
 });
-E("Array.prototype.entries", function(a) {
+F("Array.prototype.entries", function(a) {
   return a ? a : function() {
-    return va(this, function(b, c) {
+    return ua(this, function(b, c) {
       return [b, c];
     });
   };
 });
-E("Object.is", function(a) {
+F("Object.is", function(a) {
   return a ? a : function(b, c) {
     return b === c ? 0 !== b || 1 / b === 1 / c : b !== b && c !== c;
   };
 });
-E("Array.prototype.includes", function(a) {
+F("Array.prototype.includes", function(a) {
   return a ? a : function(b, c) {
     var d = this;
     d instanceof String && (d = String(d));
@@ -789,7 +789,7 @@ E("Array.prototype.includes", function(a) {
     return !1;
   };
 });
-E("String.prototype.includes", function(a) {
+F("String.prototype.includes", function(a) {
   return a ? a : function(b, c) {
     if (null == this) {
       throw new TypeError("The 'this' value for String.prototype.includes must not be null or undefined");
@@ -800,7 +800,7 @@ E("String.prototype.includes", function(a) {
     return -1 !== this.indexOf(b, c || 0);
   };
 });
-var wa = "function" == typeof Object.assign ? Object.assign : function(a, b) {
+var va = "function" == typeof Object.assign ? Object.assign : function(a, b) {
   for (var c = 1; c < arguments.length; c++) {
     var d = arguments[c];
     if (d) {
@@ -811,10 +811,10 @@ var wa = "function" == typeof Object.assign ? Object.assign : function(a, b) {
   }
   return a;
 };
-E("Object.assign", function(a) {
-  return a || wa;
+F("Object.assign", function(a) {
+  return a || va;
 });
-E("Array.prototype.flat", function(a) {
+F("Array.prototype.flat", function(a) {
   return a ? a : function(b) {
     b = void 0 === b ? 1 : b;
     var c = [];
@@ -841,7 +841,7 @@ function J(a, b, c) {
           }
           if (b === Map) {
             b = new Map(c);
-            d = x(a);
+            d = w(a);
             for (e = d.next(); !e.done; e = d.next()) {
               e = e.value, b.set(e[0], e[1]);
             }
@@ -849,7 +849,7 @@ function J(a, b, c) {
           }
           if (b === Set) {
             b = new Set(c);
-            d = x(a.values());
+            d = w(a.values());
             for (e = d.next(); !e.done; e = d.next()) {
               b.add(e.value);
             }
@@ -866,7 +866,7 @@ function J(a, b, c) {
 function K() {
   return Object.create(null);
 }
-function xa(a, b) {
+function wa(a, b) {
   return b.length - a.length;
 }
 function L(a) {
@@ -875,15 +875,15 @@ function L(a) {
 function M(a) {
   return "object" === typeof a;
 }
-function ya(a) {
+function xa(a) {
   var b = [];
-  a = x(a.keys());
+  a = w(a.keys());
   for (var c = a.next(); !c.done; c = a.next()) {
     b.push(c.value);
   }
   return b;
 }
-function za(a, b) {
+function ya(a, b) {
   if (L(b)) {
     a = a[b];
   } else {
@@ -893,13 +893,13 @@ function za(a, b) {
   }
   return a;
 }
-function Aa(a) {
+function za(a) {
   for (var b = 0, c = 0, d = void 0; c < a.length; c++) {
     (d = a[c]) && b < d.length && (b = d.length);
   }
   return b;
 }
-;var Ba = [["\u00aa", "a"], ["\u00b2", "2"], ["\u00b3", "3"], ["\u00b9", "1"], ["\u00ba", "o"], ["\u00bc", "1\u20444"], ["\u00bd", "1\u20442"], ["\u00be", "3\u20444"], ["\u00e0", "a"], ["\u00e1", "a"], ["\u00e2", "a"], ["\u00e3", "a"], ["\u00e4", "a"], ["\u00e5", "a"], ["\u00e7", "c"], ["\u00e8", "e"], ["\u00e9", "e"], ["\u00ea", "e"], ["\u00eb", "e"], ["\u00ec", "i"], ["\u00ed", "i"], ["\u00ee", "i"], ["\u00ef", "i"], ["\u00f1", "n"], ["\u00f2", "o"], ["\u00f3", "o"], ["\u00f4", "o"], ["\u00f5", 
+;var Aa = [["\u00aa", "a"], ["\u00b2", "2"], ["\u00b3", "3"], ["\u00b9", "1"], ["\u00ba", "o"], ["\u00bc", "1\u20444"], ["\u00bd", "1\u20442"], ["\u00be", "3\u20444"], ["\u00e0", "a"], ["\u00e1", "a"], ["\u00e2", "a"], ["\u00e3", "a"], ["\u00e4", "a"], ["\u00e5", "a"], ["\u00e7", "c"], ["\u00e8", "e"], ["\u00e9", "e"], ["\u00ea", "e"], ["\u00eb", "e"], ["\u00ec", "i"], ["\u00ed", "i"], ["\u00ee", "i"], ["\u00ef", "i"], ["\u00f1", "n"], ["\u00f2", "o"], ["\u00f3", "o"], ["\u00f4", "o"], ["\u00f5", 
 "o"], ["\u00f6", "o"], ["\u00f9", "u"], ["\u00fa", "u"], ["\u00fb", "u"], ["\u00fc", "u"], ["\u00fd", "y"], ["\u00ff", "y"], ["\u0101", "a"], ["\u0103", "a"], ["\u0105", "a"], ["\u0107", "c"], ["\u0109", "c"], ["\u010b", "c"], ["\u010d", "c"], ["\u010f", "d"], ["\u0113", "e"], ["\u0115", "e"], ["\u0117", "e"], ["\u0119", "e"], ["\u011b", "e"], ["\u011d", "g"], ["\u011f", "g"], ["\u0121", "g"], ["\u0123", "g"], ["\u0125", "h"], ["\u0129", "i"], ["\u012b", "i"], ["\u012d", "i"], ["\u012f", "i"], ["\u0133", 
 "ij"], ["\u0135", "j"], ["\u0137", "k"], ["\u013a", "l"], ["\u013c", "l"], ["\u013e", "l"], ["\u0140", "l"], ["\u0144", "n"], ["\u0146", "n"], ["\u0148", "n"], ["\u0149", "n"], ["\u014d", "o"], ["\u014f", "o"], ["\u0151", "o"], ["\u0155", "r"], ["\u0157", "r"], ["\u0159", "r"], ["\u015b", "s"], ["\u015d", "s"], ["\u015f", "s"], ["\u0161", "s"], ["\u0163", "t"], ["\u0165", "t"], ["\u0169", "u"], ["\u016b", "u"], ["\u016d", "u"], ["\u016f", "u"], ["\u0171", "u"], ["\u0173", "u"], ["\u0175", "w"], ["\u0177", 
 "y"], ["\u017a", "z"], ["\u017c", "z"], ["\u017e", "z"], ["\u017f", "s"], ["\u01a1", "o"], ["\u01b0", "u"], ["\u01c6", "dz"], ["\u01c9", "lj"], ["\u01cc", "nj"], ["\u01ce", "a"], ["\u01d0", "i"], ["\u01d2", "o"], ["\u01d4", "u"], ["\u01d6", "u"], ["\u01d8", "u"], ["\u01da", "u"], ["\u01dc", "u"], ["\u01df", "a"], ["\u01e1", "a"], ["\u01e3", "ae"], ["\u00e6", "ae"], ["\u01fd", "ae"], ["\u01e7", "g"], ["\u01e9", "k"], ["\u01eb", "o"], ["\u01ed", "o"], ["\u01ef", "\u0292"], ["\u01f0", "j"], ["\u01f3", 
@@ -907,26 +907,26 @@ function Aa(a) {
 ["\u02b2", "j"], ["\u02b3", "r"], ["\u02b4", "\u0279"], ["\u02b5", "\u027b"], ["\u02b6", "\u0281"], ["\u02b7", "w"], ["\u02b8", "y"], ["\u02e0", "\u0263"], ["\u02e1", "l"], ["\u02e2", "s"], ["\u02e3", "x"], ["\u02e4", "\u0295"], ["\u0390", "\u03b9"], ["\u03ac", "\u03b1"], ["\u03ad", "\u03b5"], ["\u03ae", "\u03b7"], ["\u03af", "\u03b9"], ["\u03b0", "\u03c5"], ["\u03ca", "\u03b9"], ["\u03cb", "\u03c5"], ["\u03cc", "\u03bf"], ["\u03cd", "\u03c5"], ["\u03ce", "\u03c9"], ["\u03d0", "\u03b2"], ["\u03d1", 
 "\u03b8"], ["\u03d2", "\u03a5"], ["\u03d3", "\u03a5"], ["\u03d4", "\u03a5"], ["\u03d5", "\u03c6"], ["\u03d6", "\u03c0"], ["\u03f0", "\u03ba"], ["\u03f1", "\u03c1"], ["\u03f2", "\u03c2"], ["\u03f5", "\u03b5"], ["\u0439", "\u0438"], ["\u0450", "\u0435"], ["\u0451", "\u0435"], ["\u0453", "\u0433"], ["\u0457", "\u0456"], ["\u045c", "\u043a"], ["\u045d", "\u0438"], ["\u045e", "\u0443"], ["\u0477", "\u0475"], ["\u04c2", "\u0436"], ["\u04d1", "\u0430"], ["\u04d3", "\u0430"], ["\u04d7", "\u0435"], ["\u04db", 
 "\u04d9"], ["\u04dd", "\u0436"], ["\u04df", "\u0437"], ["\u04e3", "\u0438"], ["\u04e5", "\u0438"], ["\u04e7", "\u043e"], ["\u04eb", "\u04e9"], ["\u04ed", "\u044d"], ["\u04ef", "\u0443"], ["\u04f1", "\u0443"], ["\u04f3", "\u0443"], ["\u04f5", "\u0447"]];
-var Ca = /[^\p{L}\p{N}]+/u, Da = /(\d{3})/g, Ea = /(\D)(\d{3})/g, Fa = /(\d{3})(\D)/g, Ga = "".normalize && /[\u0300-\u036f]/g;
-function Ha(a) {
-  if (!this || this.constructor !== Ha) {
+var Ba = /[^\p{L}\p{N}]+/u, Ca = /(\d{3})/g, Da = /(\D)(\d{3})/g, Ea = /(\d{3})(\D)/g, Fa = "".normalize && /[\u0300-\u036f]/g;
+function Ga(a) {
+  if (!this || this.constructor !== Ga) {
     var b = Function.prototype.bind, c = b.apply, d = [null], e = d.concat;
     if (arguments instanceof Array) {
       var g = arguments;
     } else {
-      g = x(arguments);
+      g = w(arguments);
       for (var f, h = []; !(f = g.next()).done;) {
         h.push(f.value);
       }
       g = h;
     }
-    return new (c.call(b, Ha, e.call(d, g)))();
+    return new (c.call(b, Ga, e.call(d, g)))();
   }
   for (b = 0; b < arguments.length; b++) {
     this.assign(arguments[b]);
   }
 }
-t = Ha.prototype;
+t = Ga.prototype;
 t.assign = function(a) {
   this.normalize = J(a.normalize, !0, this.normalize);
   var b = a.include, c = b || a.exclude || a.split;
@@ -949,7 +949,7 @@ t.assign = function(a) {
     this.numeric = d;
   } else {
     try {
-      this.split = J(c, Ca, this.split);
+      this.split = J(c, Ba, this.split);
     } catch (g) {
       this.split = /\s+/;
     }
@@ -957,7 +957,7 @@ t.assign = function(a) {
   }
   this.prepare = J(a.prepare, null, this.prepare);
   this.finalize = J(a.finalize, null, this.finalize);
-  Ga || (this.mapper = new Map(Ba));
+  Fa || (this.mapper = new Map(Aa));
   this.rtl = a.rtl || !1;
   this.dedupe = J(a.dedupe, !1, this.dedupe);
   this.filter = J((c = a.filter) && new Set(c), null, this.filter);
@@ -975,12 +975,12 @@ t.assign = function(a) {
   this.A = "";
   this.G = null;
   if (this.matcher) {
-    for (a = x(this.matcher.keys()), b = a.next(); !b.done; b = a.next()) {
+    for (a = w(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 = w(this.stemmer.keys()), b = a.next(); !b.done; b = a.next()) {
       this.A += (this.A ? "|" : "") + b.value;
     }
   }
@@ -997,7 +997,7 @@ t.addMatcher = function(a, b) {
   this.matcher.set(a, b);
   this.h += (this.h ? "|" : "") + a;
   this.D = null;
-  this.cache && Ja(this);
+  this.cache && Ia(this);
   return this;
 };
 t.addStemmer = function(a, b) {
@@ -1005,13 +1005,13 @@ t.addStemmer = function(a, b) {
   this.stemmer.set(a, b);
   this.A += (this.A ? "|" : "") + a;
   this.G = null;
-  this.cache && Ja(this);
+  this.cache && Ia(this);
   return this;
 };
 t.addFilter = function(a) {
   this.filter || (this.filter = new Set());
   this.filter.add(a);
-  this.cache && Ja(this);
+  this.cache && Ia(this);
   return this;
 };
 t.addMapper = function(a, b) {
@@ -1023,17 +1023,17 @@ t.addMapper = function(a, b) {
   }
   this.mapper || (this.mapper = new Map());
   this.mapper.set(a, b);
-  this.cache && Ja(this);
+  this.cache && Ia(this);
   return this;
 };
 t.addReplacer = function(a, b) {
   "string" === typeof a && (a = new RegExp(a, "g"));
   this.replacer || (this.replacer = []);
   this.replacer.push(a, b || "");
-  this.cache && Ja(this);
+  this.cache && Ia(this);
   return this;
 };
-function Ja(a) {
+function Ia(a) {
   a.N.clear();
   a.O.clear();
 }
@@ -1045,12 +1045,12 @@ t.encode = function(a) {
         return this.N.get(a);
       }
     } else {
-      this.U = setTimeout(Ka, 50, this);
+      this.U = setTimeout(Ja, 50, this);
     }
   }
-  this.normalize && (a = "function" === typeof this.normalize ? this.normalize(a) : Ga ? a.normalize("NFKD").replace(Ga, "").toLowerCase() : a.toLowerCase());
+  this.normalize && (a = "function" === typeof this.normalize ? this.normalize(a) : Fa ? a.normalize("NFKD").replace(Fa, "").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 "));
+  this.numeric && 3 < a.length && (a = a.replace(Da, "$1 $2").replace(Ea, "$1 $2").replace(Ca, "$1 "));
   for (var c = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer), d = [], e = this.split || "" === this.split ? a.split(this.split) : a, g = 0, f = void 0, h = void 0; g < e.length; g++) {
     if ((f = h = e[g]) && !(f.length < this.minlength)) {
       if (c) {
@@ -1065,7 +1065,7 @@ t.encode = function(a) {
                 continue;
               }
             } else {
-              this.U = setTimeout(Ka, 50, this);
+              this.U = setTimeout(Ja, 50, this);
             }
           }
           k = void 0;
@@ -1098,14 +1098,14 @@ t.encode = function(a) {
   this.cache && a.length <= this.B && (this.N.set(a, d), this.N.size > this.L && (this.N.clear(), this.B = this.B / 1.1 | 0));
   return d;
 };
-function Ka(a) {
+function Ja(a) {
   a.U = null;
   a.N.clear();
   a.O.clear();
 }
-;function La(a) {
+;function Ka(a) {
   var b, c, d, e, g, f, h;
-  return ta(function(k) {
+  return sa(function(k) {
     a = a.data;
     b = self._index;
     c = a.args;
@@ -1122,8 +1122,8 @@ function Ka(a) {
     k.h = 0;
   });
 }
-;var Ma = 0;
-function O(a) {
+;var La = 0;
+function Q(a) {
   function b(f) {
     function h(k) {
       k = k.data || k;
@@ -1136,10 +1136,10 @@ function O(a) {
       d ? this.worker.on("message", h) : this.worker.onmessage = h;
       if (a.config) {
         return new Promise(function(k) {
-          e.h[++Ma] = function() {
+          e.h[++La] = function() {
             k(e);
           };
-          e.worker.postMessage({id:Ma, task:"init", factory:c, options:a});
+          e.worker.postMessage({id:La, task:"init", factory:c, options:a});
         });
       }
       this.worker.postMessage({task:"init", factory:c, options:a});
@@ -1147,49 +1147,49 @@ function O(a) {
     }
   }
   a = void 0 === a ? {} : a;
-  if (!this || this.constructor !== O) {
-    return new O(a);
+  if (!this || this.constructor !== Q) {
+    return new Q(a);
   }
   var c = "undefined" !== typeof self ? self._factory : "undefined" !== typeof window ? window._factory : null;
   c && (c = c.toString());
-  var d = "undefined" === typeof window, e = this, g = Na(c, d, a.worker);
+  var d = "undefined" === typeof window, e = this, g = Ma(c, d, a.worker);
   return g.then ? g.then(function(f) {
     return b.call(e, f);
   }) : b.call(this, g);
 }
-Oa("add");
-Oa("append");
-Oa("search");
-Oa("update");
-Oa("remove");
-function Oa(a) {
-  O.prototype[a] = O.prototype[a + "Async"] = function() {
+Na("add");
+Na("append");
+Na("search");
+Na("update");
+Na("remove");
+function Na(a) {
+  Q.prototype[a] = Q.prototype[a + "Async"] = function() {
     var b = this, c = arguments, d, e, g, f, h;
-    return ta(function(k) {
+    return sa(function(k) {
       d = b;
       e = [].slice.call(c);
       g = e[e.length - 1];
       "function" === typeof g && (f = g, e.splice(e.length - 1, 1));
       h = new Promise(function(l) {
-        d.h[++Ma] = l;
-        d.worker.postMessage({task:a, id:Ma, args:e});
+        d.h[++La] = l;
+        d.worker.postMessage({task:a, id:La, args:e});
       });
       return f ? (h.then(f), k.return(b)) : k.return(h);
     });
   };
 }
-function Na(a, b, c) {
-  return b ? "undefined" !== typeof module ? new (require("worker_threads")["Worker"])(__dirname + "/node/node.js") : import("worker_threads").then(function(worker){ return new worker["Worker"]((1,eval)("import.meta.dirname") + "/node/node.mjs"); }) : a ? new window.Worker(URL.createObjectURL(new Blob(["onmessage=" + La.toString()], {type:"text/javascript"}))) : new window.Worker(L(c) ? c : (0,eval)("import.meta.url").replace("/worker.js", "/worker/worker.js").replace("flexsearch.bundle.module.min.js", 
+function Ma(a, b, c) {
+  return b ? "undefined" !== typeof module ? new (require("worker_threads")["Worker"])(__dirname + "/node/node.js") : import("worker_threads").then(function(worker){ return new worker["Worker"]((1,eval)("import.meta.dirname") + "/node/node.mjs"); }) : a ? new window.Worker(URL.createObjectURL(new Blob(["onmessage=" + Ka.toString()], {type:"text/javascript"}))) : new window.Worker(L(c) ? c : (0,eval)("import.meta.url").replace("/worker.js", "/worker/worker.js").replace("flexsearch.bundle.module.min.js", 
   "module/worker/worker.js"), {type:"module"});
 }
-;function Pa(a) {
-  Qa.call(a, "add");
-  Qa.call(a, "append");
-  Qa.call(a, "search");
-  Qa.call(a, "update");
-  Qa.call(a, "remove");
+;function Oa(a) {
+  Pa.call(a, "add");
+  Pa.call(a, "append");
+  Pa.call(a, "search");
+  Pa.call(a, "update");
+  Pa.call(a, "remove");
 }
-function Qa(a) {
+function Pa(a) {
   this[a + "Async"] = function() {
     var b = arguments, c = b[b.length - 1];
     if ("function" === typeof c) {
@@ -1201,59 +1201,59 @@ function Qa(a) {
     return b;
   };
 }
-;function Ra(a, b) {
+;function Qa(a, b) {
   b = void 0 === b ? 0 : b;
   var c = [], d = [];
   b && (b = 250000 / b * 5000 | 0);
-  a = x(a.entries());
+  a = w(a.entries());
   for (var e = a.next(); !e.done; e = a.next()) {
     d.push(e.value), d.length === b && (c.push(d), d = []);
   }
   d.length && c.push(d);
   return c;
 }
-function Sa(a, b) {
+function Ra(a, b) {
   b || (b = new Map());
   for (var c = 0, d; c < a.length; c++) {
     d = a[c], b.set(d[0], d[1]);
   }
   return b;
 }
-function Ta(a, b) {
+function Sa(a, b) {
   b = void 0 === b ? 0 : b;
   var c = [], d = [];
   b && (b = 250000 / b * 1000 | 0);
-  a = x(a.entries());
+  a = w(a.entries());
   for (var e = a.next(); !e.done; e = a.next()) {
-    e = e.value, d.push([e[0], Ra(e[1])[0]]), d.length === b && (c.push(d), d = []);
+    e = e.value, d.push([e[0], Qa(e[1])[0]]), d.length === b && (c.push(d), d = []);
   }
   d.length && c.push(d);
   return c;
 }
-function Ua(a, b) {
+function Ta(a, b) {
   b || (b = new Map());
   for (var c = 0, d, e; c < a.length; c++) {
-    d = a[c], e = b.get(d[0]), b.set(d[0], Sa(d[1], e));
+    d = a[c], e = b.get(d[0]), b.set(d[0], Ra(d[1], e));
   }
   return b;
 }
-function Va(a) {
+function Ua(a) {
   var b = [], c = [];
-  a = x(a.keys());
+  a = w(a.keys());
   for (var d = a.next(); !d.done; d = a.next()) {
     c.push(d.value), 250000 === c.length && (b.push(c), c = []);
   }
   c.length && b.push(c);
   return b;
 }
-function Wa(a, b) {
+function Va(a, b) {
   b || (b = new Set());
   for (var c = 0; c < a.length; c++) {
     b.add(a[c]);
   }
   return b;
 }
-function Xa(a, b, c, d, e, g, f) {
+function Wa(a, b, c, d, e, g, f) {
   f = void 0 === f ? 0 : f;
   var h = d && d.constructor === Array, k = h ? d.shift() : d;
   if (!k) {
@@ -1262,12 +1262,12 @@ function Xa(a, b, c, d, e, g, f) {
   if ((k = a((b ? b + "." : "") + (f + 1) + "." + c, JSON.stringify(k))) && k.then) {
     var l = this;
     return k.then(function() {
-      return Xa.call(l, a, b, c, h ? d : null, e, g, f + 1);
+      return Wa.call(l, a, b, c, h ? d : null, e, g, f + 1);
     });
   }
-  return Xa.call(this, a, b, c, h ? d : null, e, g, f + 1);
+  return Wa.call(this, a, b, c, h ? d : null, e, g, f + 1);
 }
-;function Ya(a, b, c, d) {
+;function Xa(a, b, c, d) {
   for (var e = [], g = 0, f; g < a.index.length; g++) {
     if (f = a.index[g], b >= f.length) {
       b -= f.length;
@@ -1283,9 +1283,9 @@ function Xa(a, b, c, d, e, g, f) {
   }
   return e;
 }
-function S(a) {
+function R(a) {
   if (!this) {
-    return new S(a);
+    return new R(a);
   }
   this.index = a ? [a] : [];
   this.length = a ? a.length : 0;
@@ -1332,12 +1332,12 @@ function S(a) {
     }
     if ("slice" === d) {
       return function(e, g) {
-        return Ya(b, e || 0, g || b.length, !1);
+        return Xa(b, e || 0, g || b.length, !1);
       };
     }
     if ("splice" === d) {
       return function(e, g) {
-        return Ya(b, e || 0, g || b.length, !0);
+        return Xa(b, e || 0, g || b.length, !0);
       };
     }
     if ("constructor" === d) {
@@ -1353,29 +1353,29 @@ function S(a) {
     return !0;
   }});
 }
-S.prototype.clear = function() {
+R.prototype.clear = function() {
   this.index.length = 0;
 };
-S.prototype.destroy = function() {
+R.prototype.destroy = function() {
   this.proxy = this.index = null;
 };
-S.prototype.push = function() {
+R.prototype.push = function() {
 };
-function T(a) {
+function S(a) {
   a = void 0 === a ? 8 : a;
   if (!this) {
-    return new T(a);
+    return new S(a);
   }
   this.index = K();
   this.B = [];
   this.size = 0;
-  32 < a ? (this.h = Za, this.A = BigInt(a)) : (this.h = $a, this.A = a);
+  32 < a ? (this.h = Ya, this.A = BigInt(a)) : (this.h = Za, this.A = a);
 }
-T.prototype.get = function(a) {
+S.prototype.get = function(a) {
   var b = this.h(a);
   return (b = this.index[b]) && b.get(a);
 };
-T.prototype.set = function(a, b) {
+S.prototype.set = function(a, b) {
   var c = this.h(a), d = this.index[c];
   d ? (c = d.size, d.set(a, b), (c -= d.size) && this.size++) : (this.index[c] = d = new Map([[a, b]]), this.B.push(d));
 };
@@ -1386,13 +1386,13 @@ function U(a) {
   }
   this.index = K();
   this.h = [];
-  32 < a ? (this.B = Za, this.A = BigInt(a)) : (this.B = $a, this.A = a);
+  32 < a ? (this.B = Ya, this.A = BigInt(a)) : (this.B = Za, this.A = a);
 }
 U.prototype.add = function(a) {
   var b = this.B(a), c = this.index[b];
   c ? (b = c.size, c.add(a), (b -= c.size) && this.size++) : (this.index[b] = c = new Set([a]), this.h.push(c));
 };
-t = T.prototype;
+t = S.prototype;
 t.has = U.prototype.has = function(a) {
   var b = this.B(a);
   return (b = this.index[b]) && b.has(a);
@@ -1406,9 +1406,9 @@ t.clear = U.prototype.clear = function() {
   this.h = [];
   this.size = 0;
 };
-t.values = U.prototype.values = function ab() {
+t.values = U.prototype.values = function $a() {
   var b, c = this, d, e, g;
-  return ra(ab, function(f) {
+  return qa($a, function(f) {
     switch(f.h) {
       case 1:
         b = 0;
@@ -1417,7 +1417,7 @@ t.values = U.prototype.values = function ab() {
           f.h = 0;
           break;
         }
-        d = x(c.h[b].values());
+        d = w(c.h[b].values());
         e = d.next();
       case 5:
         if (e.done) {
@@ -1426,15 +1426,15 @@ t.values = U.prototype.values = function ab() {
           break;
         }
         g = e.value;
-        return F(f, g, 6);
+        return G(f, g, 6);
       case 6:
         e = d.next(), f.h = 5;
     }
   });
 };
-t.keys = U.prototype.keys = function bb() {
+t.keys = U.prototype.keys = function ab() {
   var b, c = this, d, e, g;
-  return ra(bb, function(f) {
+  return qa(ab, function(f) {
     switch(f.h) {
       case 1:
         b = 0;
@@ -1443,7 +1443,7 @@ t.keys = U.prototype.keys = function bb() {
           f.h = 0;
           break;
         }
-        d = x(c.h[b].keys());
+        d = w(c.h[b].keys());
         e = d.next();
       case 5:
         if (e.done) {
@@ -1452,15 +1452,15 @@ t.keys = U.prototype.keys = function bb() {
           break;
         }
         g = e.value;
-        return F(f, g, 6);
+        return G(f, g, 6);
       case 6:
         e = d.next(), f.h = 5;
     }
   });
 };
-t.entries = U.prototype.entries = function cb() {
+t.entries = U.prototype.entries = function bb() {
   var b, c = this, d, e, g;
-  return ra(cb, function(f) {
+  return qa(bb, function(f) {
     switch(f.h) {
       case 1:
         b = 0;
@@ -1469,7 +1469,7 @@ t.entries = U.prototype.entries = function cb() {
           f.h = 0;
           break;
         }
-        d = x(c.h[b].entries());
+        d = w(c.h[b].entries());
         e = d.next();
       case 5:
         if (e.done) {
@@ -1478,13 +1478,13 @@ t.entries = U.prototype.entries = function cb() {
           break;
         }
         g = e.value;
-        return F(f, g, 6);
+        return G(f, g, 6);
       case 6:
         e = d.next(), f.h = 5;
     }
   });
 };
-function $a(a) {
+function Za(a) {
   var b = Math.pow(2, this.A) - 1;
   if ("number" == typeof a) {
     return a & b;
@@ -1494,11 +1494,11 @@ function $a(a) {
   }
   return 32 === this.A ? c + Math.pow(2, 31) : c;
 }
-function Za() {
+function Ya() {
   throw Error("The keystore is limited to 32 for EcmaScript5");
 }
 ;V.prototype.add = function(a, b, c) {
-  M(a) && (b = a, a = za(b, this.key));
+  M(a) && (b = a, a = ya(b, this.key));
   if (b && (a || 0 === a)) {
     if (!c && this.reg.has(a)) {
       return this.update(a, b);
@@ -1511,7 +1511,7 @@ function Za() {
       } else {
         var f = e.S;
         if (!f || f(b)) {
-          e.constructor === String ? e = ["" + e] : L(e) && (e = [e]), db(b, e, this.T, 0, g, a, e[0], c);
+          e.constructor === String ? e = ["" + e] : L(e) && (e = [e]), cb(b, e, this.T, 0, g, a, e[0], c);
         }
       }
     }
@@ -1531,7 +1531,7 @@ function Za() {
             continue;
           }
           f.constructor === String && (f = "" + f);
-          f = za(b, f);
+          f = ya(b, f);
         }
         if (g && f) {
           for (L(f) && (f = [f]), h = 0, k = void 0; h < f.length; h++) {
@@ -1542,9 +1542,9 @@ function Za() {
               (m = g.get(l)) ? k = m : g.set(l, k = []);
               if (!c || !k.includes(a)) {
                 if (k.length === Math.pow(2, 31) - 1) {
-                  m = new S(k);
+                  m = new R(k);
                   if (this.fastupdate) {
-                    for (var n = x(this.reg.values()), p = n.next(); !p.done; p = n.next()) {
+                    for (var n = w(this.reg.values()), p = n.next(); !p.done; p = n.next()) {
                       p = p.value, p.includes(k) && (p[p.indexOf(k)] = m);
                     }
                   }
@@ -1576,7 +1576,7 @@ function Za() {
               q[d] = b[d];
               continue;
             }
-            eb(b, q, d, 0, d[0], g);
+            db(b, q, d, 0, d[0], g);
           }
         }
       }
@@ -1585,21 +1585,21 @@ function Za() {
   }
   return this;
 };
-function eb(a, b, c, d, e, g) {
+function db(a, b, c, d, e, g) {
   a = a[e];
   if (d === c.length - 1) {
     b[e] = g || a;
   } else if (a) {
     if (a.constructor === Array) {
       for (b = b[e] = Array(a.length), e = 0; e < a.length; e++) {
-        eb(a, b, c, d, e);
+        db(a, b, c, d, e);
       }
     } else {
-      b = b[e] || (b[e] = K()), e = c[++d], eb(a, b, c, d, e);
+      b = b[e] || (b[e] = K()), e = c[++d], db(a, b, c, d, e);
     }
   }
 }
-function db(a, b, c, d, e, g, f, h) {
+function cb(a, b, c, d, e, g, f, h) {
   if (a = a[f]) {
     if (d === b.length - 1) {
       if (a.constructor === Array) {
@@ -1615,17 +1615,17 @@ function db(a, b, c, d, e, g, f, h) {
     } else {
       if (a.constructor === Array) {
         for (f = 0; f < a.length; f++) {
-          db(a, b, c, d, e, g, f, h);
+          cb(a, b, c, d, e, g, f, h);
         }
       } else {
-        f = b[++d], db(a, b, c, d, e, g, f, h);
+        f = b[++d], cb(a, b, c, d, e, g, f, h);
       }
     }
   } else {
     e.db && e.remove(g);
   }
 }
-;function fb(a, b, c, d, e, g, f) {
+;function eb(a, b, c, d, e, g, f) {
   var h = a.length, k = [], l;
   var m = K();
   for (var n = 0, p = void 0, q; n < b; n++) {
@@ -1636,8 +1636,8 @@ function db(a, b, c, d, e, g, f, h) {
           (l = m[q]) ? m[q]++ : (l = 0, m[q] = 1);
           l = k[l] || (k[l] = []);
           if (!f) {
-            var y = n + (r ? 0 : g || 0);
-            l = l[y] || (l[y] = []);
+            var z = n + (r ? 0 : g || 0);
+            l = l[z] || (l[z] = []);
           }
           l.push(q);
         }
@@ -1646,7 +1646,7 @@ function db(a, b, c, d, e, g, f, h) {
   }
   if (a = k.length) {
     if (e) {
-      k = 1 < k.length ? gb(k, d, c, f, 0) : (k = k[0]).length > c || d ? k.slice(d, c + d) : k;
+      k = 1 < k.length ? fb(k, d, c, f, 0) : (k = k[0]).length > c || d ? k.slice(d, c + d) : k;
     } else {
       if (a < h) {
         return [];
@@ -1679,7 +1679,7 @@ function db(a, b, c, d, e, g, f, h) {
   }
   return k;
 }
-function gb(a, b, c, d, e) {
+function fb(a, b, c, d, e) {
   var g = [], f = K(), h = a.length, k = 0;
   if (d) {
     for (e = h - 1; 0 <= e; e--) {
@@ -1699,7 +1699,7 @@ function gb(a, b, c, d, e) {
       }
     }
   } else {
-    for (var n = Aa(a), p = 0; p < n; p++) {
+    for (var n = za(a), p = 0; p < n; p++) {
       for (var q = h - 1; 0 <= q; q--) {
         if (l = (d = a[q][p]) && d.length) {
           for (var r = 0; r < l; r++) {
@@ -1721,7 +1721,7 @@ function gb(a, b, c, d, e) {
   }
   return g;
 }
-function hb(a, b) {
+function gb(a, b) {
   for (var c = K(), d = [], e = 0, g; e < b.length; e++) {
     g = b[e];
     for (var f = 0; f < g.length; f++) {
@@ -1751,30 +1751,30 @@ function hb(a, b) {
     b || (b = 100);
     if (m && (!this.db || !d)) {
       m.constructor !== Array && (m = [m]);
-      for (var v = [], y = 0, z = void 0; y < m.length; y++) {
-        z = m[y];
-        if (L(z)) {
+      for (var v = [], z = 0, x = void 0; z < m.length; z++) {
+        x = m[z];
+        if (L(x)) {
           throw Error("A tag option can't be a string, instead it needs a { field: tag } format.");
         }
-        if (z.field && z.tag) {
-          var u = z.tag;
+        if (x.field && x.tag) {
+          var u = x.tag;
           if (u.constructor === Array) {
-            for (var w = 0; w < u.length; w++) {
-              v.push(z.field, u[w]);
+            for (var y = 0; y < u.length; y++) {
+              v.push(x.field, u[y]);
             }
           } else {
-            v.push(z.field, u);
+            v.push(x.field, u);
           }
         } else {
-          u = Object.keys(z);
-          w = 0;
-          for (var B = void 0, D = void 0; w < u.length; w++) {
-            if (B = u[w], D = z[B], D.constructor === Array) {
-              for (var A = 0; A < D.length; A++) {
-                v.push(B, D[A]);
+          u = Object.keys(x);
+          y = 0;
+          for (var E = void 0, A = void 0; y < u.length; y++) {
+            if (E = u[y], A = x[E], A.constructor === Array) {
+              for (var B = 0; B < A.length; B++) {
+                v.push(E, A[B]);
               }
             } else {
-              v.push(B, D);
+              v.push(E, A);
             }
           }
         }
@@ -1796,14 +1796,14 @@ function hb(a, b) {
               }
               g.push(p = p.db.tag(v[h + 1], b, r, n));
             } else {
-              p = ib.call(this, v[h], v[h + 1], b, r, n);
+              p = hb.call(this, v[h], v[h + 1], b, r, n);
             }
             e.push({field:v[h], tag:v[h + 1], result:p});
           }
         }
-        return g.length ? Promise.all(g).then(function(P) {
-          for (var Q = 0; Q < P.length; Q++) {
-            e[Q].result = P[Q];
+        return g.length ? Promise.all(g).then(function(O) {
+          for (var P = 0; P < O.length; P++) {
+            e[P].result = O[P];
           }
           return e;
         }) : e;
@@ -1813,83 +1813,83 @@ function hb(a, b) {
   }
   l || (l = this.field);
   v = !d && (this.worker || this.db) && [];
-  y = 0;
-  for (w = z = u = void 0; y < l.length; y++) {
-    if (z = l[y], !this.db || !this.tag || this.I[y]) {
+  z = 0;
+  for (y = x = u = void 0; z < l.length; z++) {
+    if (x = l[z], !this.db || !this.tag || this.I[z]) {
       u = void 0;
-      L(z) || (u = z, z = u.field, a = u.query || a, b = u.limit || b, r = u.offset || r, p = u.suggest || p, n = this.store && (u.enrich || n));
+      L(x) || (u = x, x = u.field, a = u.query || a, b = u.limit || b, r = u.offset || r, p = u.suggest || p, n = this.store && (u.enrich || n));
       if (d) {
-        u = d[y];
+        u = d[z];
       } else {
-        w = u || c;
-        u = this.index.get(z);
+        y = u || c;
+        u = this.index.get(x);
         if (m) {
           if (this.db) {
-            w.tag = m;
-            var R = u.db.support_tag_search;
-            w.field = l;
+            y.tag = m;
+            var T = u.db.support_tag_search;
+            y.field = l;
           }
-          R || (w.enrich = !1);
+          T || (y.enrich = !1);
         }
         if (v) {
-          v[y] = u.search(a, b, w);
-          w && n && (w.enrich = n);
+          v[z] = u.search(a, b, y);
+          y && n && (y.enrich = n);
           continue;
         } else {
-          u = u.search(a, b, w), w && n && (w.enrich = n);
+          u = u.search(a, b, y), y && n && (y.enrich = n);
         }
       }
-      w = u && u.length;
-      if (m && w) {
-        B = [];
-        D = 0;
+      y = u && u.length;
+      if (m && y) {
+        E = [];
+        A = 0;
         if (this.db && d) {
-          if (!R) {
-            for (A = l.length; A < d.length; A++) {
-              var G = d[A];
-              if (G && G.length) {
-                D++, B.push(G);
+          if (!T) {
+            for (B = l.length; B < d.length; B++) {
+              var D = d[B];
+              if (D && D.length) {
+                A++, E.push(D);
               } else if (!p) {
                 return e;
               }
             }
           }
         } else {
-          A = 0;
-          for (var H = G = void 0; A < m.length; A += 2) {
-            G = this.tag.get(m[A]);
-            if (!G) {
-              if (console.warn("Tag '" + m[A] + ":" + m[A + 1] + "' will be skipped because there is no field '" + m[A] + "'."), p) {
+          B = 0;
+          for (var Pb = D = void 0; B < m.length; B += 2) {
+            D = this.tag.get(m[B]);
+            if (!D) {
+              if (console.warn("Tag '" + m[B] + ":" + m[B + 1] + "' will be skipped because there is no field '" + m[B] + "'."), p) {
                 continue;
               } else {
                 return e;
               }
             }
-            if (H = (G = G && G.get(m[A + 1])) && G.length) {
-              D++, B.push(G);
+            if (Pb = (D = D && D.get(m[B + 1])) && D.length) {
+              A++, E.push(D);
             } else if (!p) {
               return e;
             }
           }
         }
-        if (D) {
-          u = hb(u, B);
-          w = u.length;
-          if (!w && !p) {
+        if (A) {
+          u = gb(u, E);
+          y = u.length;
+          if (!y && !p) {
             return e;
           }
-          D--;
+          A--;
         }
       }
-      if (w) {
-        g[f] = z, e.push(u), f++;
+      if (y) {
+        g[f] = x, e.push(u), f++;
       } else if (1 === l.length) {
         return e;
       }
     }
   }
   if (v) {
-    if (this.db && m && m.length && !R) {
+    if (this.db && m && m.length && !T) {
       for (n = 0; n < m.length; n += 2) {
         g = this.index.get(m[n]);
         if (!g) {
@@ -1903,8 +1903,8 @@ function hb(a, b) {
       }
     }
     var Qb = this;
-    return Promise.all(v).then(function(P) {
-      return P.length ? Qb.search(a, b, c, P) : P;
+    return Promise.all(v).then(function(O) {
+      return O.length ? Qb.search(a, b, c, O) : O;
     });
   }
   if (!f) {
@@ -1917,55 +1917,55 @@ function hb(a, b) {
   r = 0;
   for (p = void 0; r < g.length; r++) {
     p = e[r];
-    n && p.length && !p[0].doc && (this.db ? v.push(p = this.index.get(this.field[0]).db.enrich(p)) : p.length && (p = jb.call(this, p)));
+    n && p.length && !p[0].doc && (this.db ? v.push(p = this.index.get(this.field[0]).db.enrich(p)) : p.length && (p = ib.call(this, p)));
     if (h) {
       return p;
     }
     e[r] = {field:g[r], result:p};
   }
   if (n && this.db && v.length) {
-    var Ia = this;
-    return Promise.all(v).then(function(P) {
-      for (var Q = 0; Q < P.length; Q++) {
-        e[Q].result = P[Q];
+    var Ha = this;
+    return Promise.all(v).then(function(O) {
+      for (var P = 0; P < O.length; P++) {
+        e[P].result = O[P];
       }
-      return k ? kb(e, b) : q ? lb(e, a, Ia.index, Ia.field, Ia.I, q) : e;
+      return k ? jb(e, b) : q ? kb(e, a, Ha.index, Ha.field, Ha.I, q) : e;
     });
   }
-  return k ? kb(e, b) : q ? lb(e, a, this.index, this.field, this.I, q) : e;
+  return k ? jb(e, b) : q ? kb(e, a, this.index, this.field, this.I, q) : e;
 };
-function lb(a, b, c, d, e, g) {
+function kb(a, b, c, d, e, g) {
   for (var f, h, k, l = 0, m, n, p; l < a.length; l++) {
     for (m = a[l].result, n = a[l].field, k = c.get(n), p = k.encoder, k = k.tokenize, n = e[d.indexOf(n)], p !== f && (f = p, h = f.encode(b)), p = 0; p < m.length; p++) {
-      var q = "", r = za(m[p].doc, n), v = f.encode(r);
+      var q = "", r = ya(m[p].doc, n), v = f.encode(r);
       r = r.split(f.split);
-      for (var y = 0, z, u; y < v.length; y++) {
-        z = v[y];
-        u = r[y];
-        for (var w = void 0, B = 0, D; B < h.length; B++) {
-          if (D = h[B], "strict" === k) {
-            if (z === D) {
+      for (var z = 0, x, u; z < v.length; z++) {
+        x = v[z];
+        u = r[z];
+        for (var y = void 0, E = 0, A; E < h.length; E++) {
+          if (A = h[E], "strict" === k) {
+            if (x === A) {
               q += (q ? " " : "") + g.replace("$1", u);
-              w = !0;
+              y = !0;
               break;
             }
           } else {
-            var A = z.indexOf(D);
-            if (-1 < A) {
-              q += (q ? " " : "") + u.substring(0, A) + g.replace("$1", u.substring(A, D.length)) + u.substring(A + D.length);
-              w = !0;
+            var B = x.indexOf(A);
+            if (-1 < B) {
+              q += (q ? " " : "") + u.substring(0, B) + g.replace("$1", u.substring(B, A.length)) + u.substring(B + A.length);
+              y = !0;
               break;
             }
           }
         }
-        w || (q += (q ? " " : "") + r[y]);
+        y || (q += (q ? " " : "") + r[z]);
       }
       m[p].highlight = q;
     }
   }
   return a;
 }
-function kb(a, b) {
+function jb(a, b) {
   for (var c = [], d = K(), e = 0, g, f; e < a.length; e++) {
     g = a[e];
     f = g.result;
@@ -1983,7 +1983,7 @@ function kb(a, b) {
   }
   return c;
 }
-function ib(a, b, c, d, e) {
+function hb(a, b, c, d, e) {
   var g = this.tag.get(a);
   if (!g) {
     return console.warn("Tag '" + a + "' was not found"), [];
@@ -1992,11 +1992,11 @@ function ib(a, b, c, d, e) {
     if (a > c || d) {
       g = g.slice(d, d + c);
     }
-    e && (g = jb.call(this, g));
+    e && (g = ib.call(this, g));
     return g;
   }
 }
-function jb(a) {
+function ib(a) {
   for (var b = Array(a.length), c = 0, d; c < a.length; c++) {
     d = a[c], b[c] = {id:d, doc:this.store.get(d)};
   }
@@ -2010,15 +2010,15 @@ function jb(a) {
   this.I = [];
   this.field = [];
   this.T = [];
-  this.key = (c = b.key || b.id) && mb(c, this.T) || "id";
+  this.key = (c = b.key || b.id) && lb(c, this.T) || "id";
   (d = a.keystore || 0) && (this.keystore = d);
-  this.reg = (this.fastupdate = !!a.fastupdate) ? d ? new T(d) : new Map() : d ? new U(d) : new Set();
+  this.reg = (this.fastupdate = !!a.fastupdate) ? d ? new S(d) : new Map() : d ? new U(d) : new Set();
   this.H = (c = b.store || null) && c && !0 !== c && [];
-  this.store = c && (d ? new T(d) : new Map());
+  this.store = c && (d ? new S(d) : new Map());
   this.cache = (c = a.cache || null) && new W(c);
   a.cache = !1;
   this.worker = a.worker;
-  this.index = nb.call(this, a, b);
+  this.index = mb.call(this, a, b);
   this.tag = null;
   if (c = b.tag) {
     if ("string" === typeof c && (c = [c]), c.length) {
@@ -2032,7 +2032,7 @@ function jb(a) {
         if (!e) {
           throw Error("The tag field from the document descriptor is undefined.");
         }
-        d.custom ? this.M[b] = d.custom : (this.M[b] = mb(e, this.T), d.filter && ("string" === typeof this.M[b] && (this.M[b] = new String(this.M[b])), this.M[b].S = d.filter));
+        d.custom ? this.M[b] = d.custom : (this.M[b] = lb(e, this.T), d.filter && ("string" === typeof this.M[b] && (this.M[b] = new String(this.M[b])), this.M[b].S = d.filter));
         this.$[b] = e;
         this.tag.set(e, new Map());
       }
@@ -2040,14 +2040,14 @@ function jb(a) {
   }
   if (this.worker) {
     a = [];
-    c = x(this.index.values());
+    c = w(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 = w(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++]);
@@ -2089,26 +2089,26 @@ t.mount = function(a) {
 };
 t.commit = function(a, b) {
   var c = this, d, e, g, f;
-  return ta(function(h) {
+  return sa(function(h) {
     if (1 == h.h) {
       d = [];
-      e = x(c.index.values());
+      e = w(c.index.values());
       for (g = e.next(); !g.done; g = e.next()) {
         f = g.value, d.push(f.db.commit(f, a, b));
       }
-      return F(h, Promise.all(d), 2);
+      return G(h, Promise.all(d), 2);
     }
     c.reg.clear();
     h.h = 0;
   });
 };
 t.destroy = function() {
-  for (var a = [], b = x(this.index.values()), c = b.next(); !c.done; c = b.next()) {
+  for (var a = [], b = w(this.index.values()), c = b.next(); !c.done; c = b.next()) {
     a.push(c.value.destroy());
   }
   return Promise.all(a);
 };
-function nb(a, b) {
+function mb(a, b) {
   var c = new Map(), d = b.index || b.field || b;
   L(d) && (d = [d]);
   for (var e = 0, g, f = void 0; e < d.length; e++) {
@@ -2116,21 +2116,21 @@ function nb(a, b) {
     L(g) || (f = g, g = g.field);
     f = M(f) ? Object.assign({}, a, f) : a;
     if (this.worker) {
-      var h = new O(f);
+      var h = new Q(f);
       c.set(g, h);
     }
     this.worker || c.set(g, new N(f, this.reg));
-    f.custom ? this.I[e] = f.custom : (this.I[e] = mb(g, this.T), f.filter && ("string" === typeof this.I[e] && (this.I[e] = new String(this.I[e])), this.I[e].S = f.filter));
+    f.custom ? this.I[e] = f.custom : (this.I[e] = lb(g, this.T), f.filter && ("string" === typeof this.I[e] && (this.I[e] = new String(this.I[e])), this.I[e].S = f.filter));
     this.field[e] = g;
   }
   if (this.H) {
     for (a = b.store, L(a) && (a = [a]), b = 0; b < a.length; b++) {
-      d = a[b], e = d.field || d, d.custom ? (this.H[b] = d.custom, d.custom.la = e) : (this.H[b] = mb(e, this.T), d.filter && ("string" === typeof this.H[b] && (this.H[b] = new String(this.H[b])), this.H[b].S = d.filter));
+      d = a[b], e = d.field || d, d.custom ? (this.H[b] = d.custom, d.custom.la = e) : (this.H[b] = lb(e, this.T), d.filter && ("string" === typeof this.H[b] && (this.H[b] = new String(this.H[b])), this.H[b].S = d.filter));
     }
   }
   return c;
 }
-function mb(a, b) {
+function lb(a, b) {
   for (var c = a.split(":"), d = 0, e = 0; e < c.length; e++) {
     a = c[e], "]" === a[a.length - 1] && (a = a.substring(0, a.length - 2)) && (b[d] = !0), a && (c[d++] = a);
   }
@@ -2144,15 +2144,15 @@ t.update = function(a, b) {
   return this.remove(a).add(a, b);
 };
 t.remove = function(a) {
-  M(a) && (a = za(a, this.key));
-  for (var b = x(this.index.values()), c = b.next(); !c.done; c = b.next()) {
+  M(a) && (a = ya(a, this.key));
+  for (var b = w(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 = w(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 = w(c), e = d.next(); !e.done; e = d.next()) {
           var g = e.value;
           e = g[0];
           g = g[1];
@@ -2168,11 +2168,11 @@ t.remove = function(a) {
   return this;
 };
 t.clear = function() {
-  for (var a = x(this.index.values()), b = a.next(); !b.done; b = a.next()) {
+  for (var a = w(this.index.values()), b = a.next(); !b.done; b = a.next()) {
     b.value.clear();
   }
   if (this.tag) {
-    for (a = x(this.tag.values()), b = a.next(); !b.done; b = a.next()) {
+    for (a = w(this.tag.values()), b = a.next(); !b.done; b = a.next()) {
       b.value.clear();
     }
   }
@@ -2183,7 +2183,7 @@ t.contain = function(a) {
   return this.db ? this.index.get(this.field[0]).db.has(a) : this.reg.has(a);
 };
 t.cleanup = function() {
-  for (var a = x(this.index.values()), b = a.next(); !b.done; b = a.next()) {
+  for (var a = w(this.index.values()), b = a.next(); !b.done; b = a.next()) {
     b.value.cleanup();
   }
   return this;
@@ -2197,7 +2197,7 @@ t.set = function(a, b) {
   this.store.set(a, b);
   return this;
 };
-t.searchCache = ob;
+t.searchCache = nb;
 t.export = function(a, b, c, d) {
   c = void 0 === c ? 0 : c;
   d = void 0 === d ? 0 : d;
@@ -2214,17 +2214,17 @@ t.export = function(a, b, c, d) {
   switch(d) {
     case 0:
       var f = "reg";
-      var h = Va(this.reg);
+      var h = Ua(this.reg);
       b = null;
       break;
     case 1:
       f = "tag";
-      h = Ta(this.tag, this.reg.size);
+      h = Sa(this.tag, this.reg.size);
       b = null;
       break;
     case 2:
       f = "doc";
-      h = Ra(this.store);
+      h = Qa(this.store);
       b = null;
       break;
     case 3:
@@ -2235,7 +2235,7 @@ t.export = function(a, b, c, d) {
     default:
       return;
   }
-  return Xa.call(this, a, b, f, h, c, d);
+  return Wa.call(this, a, b, f, h, c, d);
 };
 t.import = function(a, b) {
   if (b) {
@@ -2250,22 +2250,23 @@ t.import = function(a, b) {
     switch(a) {
       case "reg":
         this.fastupdate = !1;
-        this.reg = Wa(b, this.reg);
+        this.reg = Va(b, this.reg);
         for (b = 0; b < this.field.length; b++) {
           c = this.index.get(this.field[b]), c.fastupdate = !1, c.reg = this.reg;
         }
         break;
       case "tag":
-        this.tag = Ua(b, this.tag);
+        this.tag = Ta(b, this.tag);
         break;
       case "doc":
-        this.store = Sa(b, this.store);
+        this.store = Ra(b, this.store);
     }
   }
 };
-Pa(V.prototype);
-function ob(a, b, c) {
+Oa(V.prototype);
+function nb(a, b, c) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new W());
   var d = this.cache.get(a);
   if (!d) {
     d = this.search(a, b, c);
@@ -2295,7 +2296,7 @@ W.prototype.get = function(a) {
   return b;
 };
 W.prototype.remove = function(a) {
-  for (var b = x(this.cache), c = b.next(); !c.done; c = b.next()) {
+  for (var b = w(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);
@@ -2305,29 +2306,29 @@ W.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-var pb = {normalize:function(a) {
+var ob = {normalize:function(a) {
   return a.toLowerCase();
 }, dedupe:!1};
-var qb = 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"]]);
-var rb = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["pf", "f"]]), sb = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /([^0-9])\1+/g, "$1"];
-var tb = {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 pb = 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"]]);
+var qb = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["pf", "f"]]), rb = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /([^0-9])\1+/g, "$1"];
+var sb = {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 tb = /[\x00-\x7F]+/g;
 var ub = /[\x00-\x7F]+/g;
 var vb = /[\x00-\x7F]+/g;
-var wb = /[\x00-\x7F]+/g;
-var xb = {LatinExact:{normalize:!1, dedupe:!1}, LatinDefault:pb, LatinSimple:{normalize:!0, dedupe:!0}, LatinBalance:{normalize:!0, dedupe:!0, mapper:qb}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:qb, matcher:rb, replacer:sb}, LatinExtra:{normalize:!0, dedupe:!0, mapper:qb, replacer:sb.concat([/(?!^)[aeo]/g, ""]), matcher:rb}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
+var wb = {LatinExact:{normalize:!1, dedupe:!1}, LatinDefault:ob, LatinSimple:{normalize:!0, dedupe:!0}, LatinBalance:{normalize:!0, dedupe:!0, mapper:pb}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:pb, matcher:qb, replacer:rb}, LatinExtra:{normalize:!0, dedupe:!0, mapper:pb, replacer:rb.concat([/(?!^)[aeo]/g, ""]), matcher:qb}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (var b = 0; b < a.length; b++) {
-    for (var c = a[b], d = c.charAt(0), e = tb[d], g = 1, f; g < c.length && (f = c.charAt(g), "h" === f || "w" === f || !(f = tb[f]) || f === e || (d += f, e = f, 4 !== d.length)); g++) {
+    for (var c = a[b], d = c.charAt(0), e = sb[d], g = 1, f; g < c.length && (f = c.charAt(g), "h" === f || "w" === f || !(f = sb[f]) || f === e || (d += f, e = f, 4 !== d.length)); g++) {
     }
     a[b] = d;
   }
 }}, ArabicDefault:{rtl:!0, normalize:!1, dedupe:!0, prepare:function(a) {
-  return ("" + a).replace(ub, " ");
+  return ("" + a).replace(tb, " ");
 }}, CjkDefault:{normalize:!1, dedupe:!0, split:"", prepare:function(a) {
-  return ("" + a).replace(vb, "");
+  return ("" + a).replace(ub, "");
 }}, CyrillicDefault:{normalize:!1, dedupe:!0, prepare:function(a) {
-  return ("" + a).replace(wb, " ");
+  return ("" + a).replace(vb, " ");
 }}};
-var yb = {memory:{resolution:1}, performance:{resolution:6, fastupdate:!0, context:{depth:1, resolution:3}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:9}}};
+var xb = {memory:{resolution:1}, performance:{resolution:6, fastupdate:!0, context:{depth:1, resolution:3}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:9}}};
 K();
 N.prototype.add = function(a, b, c, d) {
   if (b && (a || 0 === a)) {
@@ -2339,15 +2340,15 @@ N.prototype.add = function(a, b, c, d) {
       for (var e = K(), g = K(), 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) : zb(h, d, k), p = "";
+          var n = this.score ? this.score(b, l, k, null, 0) : yb(h, d, k), p = "";
           switch(this.tokenize) {
             case "full":
               if (2 < m) {
                 for (n = 0; n < m; n++) {
                   for (var q = m; q > n; q--) {
                     p = l.substring(n, q);
-                    var r = this.score ? this.score(b, l, k, p, n) : zb(h, d, k, m, n);
-                    Ab(this, g, p, r, a, c);
+                    var r = this.score ? this.score(b, l, k, p, n) : yb(h, d, k, m, n);
+                    zb(this, g, p, r, a, c);
                   }
                 }
                 break;
@@ -2355,24 +2356,24 @@ N.prototype.add = function(a, b, c, d) {
             case "reverse":
               if (1 < m) {
                 for (q = m - 1; 0 < q; q--) {
-                  p = l[q] + p, r = this.score ? this.score(b, l, k, p, q) : zb(h, d, k, m, q), Ab(this, g, p, r, a, c);
+                  p = l[q] + p, r = this.score ? this.score(b, l, k, p, q) : yb(h, d, k, m, q), zb(this, g, p, r, a, c);
                 }
                 p = "";
               }
             case "forward":
               if (1 < m) {
                 for (q = 0; q < m; q++) {
-                  p += l[q], Ab(this, g, p, n, a, c);
+                  p += l[q], zb(this, g, p, n, a, c);
                 }
                 break;
               }
             default:
-              if (Ab(this, g, l, n, a, c), f && 1 < d && k < d - 1) {
+              if (zb(this, g, l, n, a, c), f && 1 < d && k < d - 1) {
                 for (m = K(), p = this.aa, n = l, q = Math.min(f + 1, d - k), r = m[n] = 1; r < q; r++) {
                   if ((l = b[this.rtl ? d - 1 - k - r : k + r]) && !m[l]) {
                     m[l] = 1;
-                    var v = this.score ? this.score(b, n, k, l, r) : zb(p + (d / 2 > p ? 0 : 1), d, k, q - 1, r - 1), y = this.bidirectional && l > n;
-                    Ab(this, e, y ? n : l, v, a, c, y ? l : n);
+                    var v = this.score ? this.score(b, n, k, l, r) : yb(p + (d / 2 > p ? 0 : 1), d, k, q - 1, r - 1), z = this.bidirectional && l > n;
+                    zb(this, e, z ? n : l, v, a, c, z ? l : n);
                   }
                 }
               }
@@ -2384,17 +2385,17 @@ N.prototype.add = function(a, b, c, d) {
       b = "";
     }
   }
-  this.db && (b || this.commit_task.push({del:a}), this.da && Bb(this));
+  this.db && (b || this.commit_task.push({del:a}), this.da && Ab(this));
   return this;
 };
-function Ab(a, b, c, d, e, g, f) {
+function zb(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] = K()), 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 S(h);
+        b = new R(h);
         if (a.fastupdate) {
-          for (c = x(a.reg.values()), g = c.next(); !g.done; g = c.next()) {
+          for (c = w(a.reg.values()), g = c.next(); !g.done; g = c.next()) {
             g = g.value, g.includes(h) && (g[g.indexOf(h)] = b);
           }
         }
@@ -2405,12 +2406,12 @@ function Ab(a, b, c, d, e, g, f) {
     }
   }
 }
-function zb(a, b, c, d, e) {
+function yb(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;
 }
 ;function X(a, b, c, d) {
   if (1 === a.length) {
-    return a = a[0], a = c || a.length > b ? b ? a.slice(c, c + b) : a.slice(c) : a, d ? Cb(a) : a;
+    return a = a[0], a = c || a.length > b ? b ? a.slice(c, c + b) : a.slice(c) : a, d ? Bb(a) : a;
   }
   for (var e = [], g = 0, f = void 0, h = void 0; g < a.length; g++) {
     if ((f = a[g]) && (h = f.length)) {
@@ -2425,7 +2426,7 @@ function zb(a, b, c, d, e) {
         h > b && (f = f.slice(0, b), h = f.length);
       } else {
         if (h >= b) {
-          return h > b && (f = f.slice(0, b)), d ? Cb(f) : f;
+          return h > b && (f = f.slice(0, b)), d ? Bb(f) : f;
         }
       }
       e.push(f);
@@ -2439,9 +2440,9 @@ function zb(a, b, c, d, e) {
     return e;
   }
   e = 1 < e.length ? [].concat.apply([], e) : e[0];
-  return d ? Cb(e) : e;
+  return d ? Bb(e) : e;
 }
-function Cb(a) {
+function Bb(a) {
   for (var b = 0; b < a.length; b++) {
     a[b] = {score:b, id:a[b]};
   }
@@ -2488,19 +2489,19 @@ function Cb(a) {
   if (c.length) {
     return Promise.all(c).then(function() {
       a.result.length && (d = d.concat([a.result]));
-      a.result = Db(d, e, g, f, h, a.J);
+      a.result = Cb(d, e, g, f, h, a.J);
       return h ? a.result : a;
     });
   }
-  d.length && (this.result.length && (d = d.concat([this.result])), this.result = Db(d, e, g, f, h, this.J));
+  d.length && (this.result.length && (d = d.concat([this.result])), this.result = Cb(d, e, g, f, h, this.J));
   return h ? this.result : this;
 };
-function Db(a, b, c, d, e, g) {
+function Cb(a, b, c, d, e, g) {
   if (!a.length) {
     return a;
   }
   "object" === typeof b && (c = b.offset || 0, d = b.enrich || !1, b = b.limit || 0);
-  return 2 > a.length ? e ? X(a[0], b, c, d) : a[0] : gb(a, c, b, e, g);
+  return 2 > a.length ? e ? X(a[0], b, c, d) : a[0] : fb(a, c, b, e, g);
 }
 ;Y.prototype.and = function() {
   if (this.result.length) {
@@ -2547,24 +2548,24 @@ function Db(a, b, c, d, e, g) {
     if (c.length) {
       return Promise.all(c).then(function() {
         d = [a.result].concat(d);
-        a.result = Eb(d, e, g, f, a.J, h);
+        a.result = Db(d, e, g, f, a.J, h);
         return f ? a.result : a;
       });
     }
     d = [this.result].concat(d);
-    this.result = Eb(d, e, g, f, this.J, h);
+    this.result = Db(d, e, g, f, this.J, h);
     return f ? this.result : this;
   }
   return this;
 };
-function Eb(a, b, c, d, e, g) {
+function Db(a, b, c, d, e, g) {
   if (2 > a.length) {
     return [];
   }
   var f = [];
   K();
-  var h = Aa(a);
-  return h ? fb(a, h, b, c, g, e, d) : f;
+  var h = za(a);
+  return h ? eb(a, h, b, c, g, e, d) : f;
 }
 ;Y.prototype.xor = function() {
   var a = this, b = arguments, c = b[0];
@@ -2607,14 +2608,14 @@ function Eb(a, b, c, d, e, g) {
   if (c.length) {
     return Promise.all(c).then(function() {
       a.result.length && (d = [a.result].concat(d));
-      a.result = Fb(d, e, g, f, !h, a.J);
+      a.result = Eb(d, e, g, f, !h, a.J);
       return h ? a.result : a;
     });
   }
-  d.length && (this.result.length && (d = [this.result].concat(d)), this.result = Fb(d, e, g, f, !h, a.J));
+  d.length && (this.result.length && (d = [this.result].concat(d)), this.result = Eb(d, e, g, f, !h, a.J));
   return h ? this.result : this;
 };
-function Fb(a, b, c, d, e, g) {
+function Eb(a, b, c, d, e, g) {
   if (!a.length) {
     return a;
   }
@@ -2703,14 +2704,14 @@ function Fb(a, b, c, d, e, g) {
   }
   if (c.length) {
     return Promise.all(c).then(function() {
-      a.result = Gb.call(a, d, e, g, f);
+      a.result = Fb.call(a, d, e, g, f);
       return f ? a.result : a;
     });
   }
-  d.length && (this.result = Gb.call(this, d, e, g, f));
+  d.length && (this.result = Fb.call(this, d, e, g, f));
   return f ? this.result : this;
 };
-function Gb(a, b, c, d) {
+function Fb(a, b, c, d) {
   if (!a.length) {
     return this.result;
   }
@@ -2781,12 +2782,12 @@ Y.prototype.boost = function(a) {
   return this;
 };
 Y.prototype.resolve = function(a, b, c) {
-  Hb = 1;
+  Gb = 1;
   var d = this.result;
   this.result = this.index = null;
   return d.length ? ("object" === typeof a && (c = a.enrich, b = a.offset, a = a.limit), X(d, a || 100, b, c)) : d;
 };
-var Hb = 1;
+var Gb = 1;
 N.prototype.search = function(a, b, c) {
   c || (!b && M(a) ? (c = a, a = "") : M(b) && (c = b, b = 0));
   var d = [], e = 0, g;
@@ -2796,145 +2797,145 @@ N.prototype.search = function(a, b, c) {
     e = c.offset || 0;
     var f = c.context;
     var h = c.suggest;
-    (g = Hb && !1 !== c.resolve) || (Hb = 0);
+    (g = Gb && !1 !== c.resolve) || (Gb = 0);
     var k = g && c.enrich;
     var l = c.boost;
     var m = c.resolution;
     var n = this.db && c.tag;
   } else {
-    g = this.resolve || Hb;
+    g = this.resolve || Gb;
   }
   var p = this.encoder.encode(a);
   var q = p.length;
   b || !g || (b = 100);
   if (1 === q) {
-    return Ib.call(this, p[0], "", b, e, g, k, n);
+    return Hb.call(this, p[0], "", b, e, g, k, n);
   }
   f = this.depth && !1 !== f;
   if (2 === q && f && !h) {
-    return Ib.call(this, p[0], p[1], b, e, g, k, n);
+    return Hb.call(this, p[0], p[1], b, e, g, k, n);
   }
-  var r = c = 0;
+  c = a = 0;
   if (1 < q) {
-    for (var v = K(), y = [], z = 0, u = void 0; z < q; z++) {
-      if ((u = p[z]) && !v[u]) {
-        if (h || this.db || Z(this, u)) {
-          y.push(u), v[u] = 1;
+    for (var r = K(), v = [], z = 0, x = void 0; z < q; z++) {
+      if ((x = p[z]) && !r[x]) {
+        if (h || this.db || Z(this, x)) {
+          v.push(x), r[x] = 1;
         } else {
           return g ? d : new Y(d);
         }
-        u = u.length;
-        c = Math.max(c, u);
-        r = r ? Math.min(r, u) : u;
+        x = x.length;
+        a = Math.max(a, x);
+        c = c ? Math.min(c, x) : x;
       }
     }
-    p = y;
-    q = a.length;
+    p = v;
+    q = p.length;
   }
   if (!q) {
     return g ? d : new Y(d);
   }
-  var w = 0;
+  var u = 0;
   if (1 === q) {
-    return Ib.call(this, p[0], "", b, e, g, k, n);
+    return Hb.call(this, p[0], "", b, e, g, k, n);
   }
   if (2 === q && f && !h) {
-    return Ib.call(this, p[0], p[1], b, e, g, k, n);
+    return Hb.call(this, p[0], p[1], b, e, g, k, n);
   }
   if (1 < q) {
     if (f) {
-      var B = p[0];
-      w = 1;
+      var y = p[0];
+      u = 1;
     } else {
-      9 < c && 3 < c / r && p.sort(xa);
+      9 < a && 3 < a / c && p.sort(wa);
     }
   }
   m || 0 === m || (m = this.resolution);
   if (this.db) {
-    if (this.db.search && (a = this.db.search(this, p, b, e, h, g, k, n), !1 !== a)) {
-      return a;
+    if (this.db.search && (f = this.db.search(this, p, b, e, h, g, k, n), !1 !== f)) {
+      return f;
     }
-    var D = this;
+    var E = this;
     return function() {
-      var A, R, G;
-      return ta(function(H) {
-        switch(H.h) {
+      var A, B, T;
+      return sa(function(D) {
+        switch(D.h) {
           case 1:
-            R = A = void 0;
+            B = A = void 0;
           case 2:
-            if (!(w < q)) {
-              H.h = 4;
+            if (!(u < q)) {
+              D.h = 4;
               break;
             }
-            R = p[w];
-            return B ? F(H, Z(D, R, B, 0, 0, !1, !1), 8) : F(H, Z(D, R, "", 0, 0, !1, !1), 7);
+            B = p[u];
+            return y ? G(D, Z(E, B, y, 0, 0, !1, !1), 8) : G(D, Z(E, B, "", 0, 0, !1, !1), 7);
           case 7:
-            A = H.D;
-            A = Jb(A, d, h, m);
-            H.h = 6;
+            A = D.D;
+            A = Ib(A, d, h, m);
+            D.h = 6;
             break;
           case 8:
-            A = H.D, A = Jb(A, d, h, D.aa), h && !1 === A && d.length || (B = R);
+            A = D.D, A = Ib(A, d, h, E.aa), h && !1 === A && d.length || (y = B);
           case 6:
             if (A) {
-              return H.return(A);
+              return D.return(A);
             }
-            if (h && w === q - 1) {
-              G = d.length;
-              if (!G) {
-                if (B) {
-                  B = "";
-                  w = -1;
-                  H.h = 3;
+            if (h && u === q - 1) {
+              T = d.length;
+              if (!T) {
+                if (y) {
+                  y = "";
+                  u = -1;
+                  D.h = 3;
                   break;
                 }
-                return H.return(d);
+                return D.return(d);
               }
-              if (1 === G) {
-                return H.return(g ? X(d[0], b, e) : new Y(d[0]));
+              if (1 === T) {
+                return D.return(g ? X(d[0], b, e) : new Y(d[0]));
               }
             }
           case 3:
-            w++;
-            H.h = 2;
+            u++;
+            D.h = 2;
             break;
           case 4:
-            return H.return(g ? fb(d, m, b, e, h, l, g) : new Y(d[0]));
+            return D.return(g ? eb(d, m, b, e, h, l, g) : new Y(d[0]));
         }
       });
     }();
   }
-  for (f = a = void 0; w < q; w++) {
-    f = p[w];
-    B ? (a = Z(this, f, B, 0, 0, !1, !1), a = Jb(a, d, h, this.aa), h && !1 === a && d.length || (B = f)) : (a = Z(this, f, "", 0, 0, !1, !1), a = Jb(a, d, h, m));
-    if (a) {
-      return a;
+  for (k = f = void 0; u < q; u++) {
+    k = p[u];
+    y ? (f = Z(this, k, y, 0, 0, !1, !1), f = Ib(f, d, h, this.aa), h && !1 === f && d.length || (y = k)) : (f = Z(this, k, "", 0, 0, !1, !1), f = Ib(f, d, h, m));
+    if (f) {
+      return f;
     }
-    if (h && w === q - 1) {
-      a = d.length;
-      if (!a) {
-        if (B) {
-          B = "";
-          w = -1;
+    if (h && u === q - 1) {
+      f = d.length;
+      if (!f) {
+        if (y) {
+          y = "";
+          u = -1;
           continue;
         }
         return d;
       }
-      if (1 === a) {
+      if (1 === f) {
         return g ? X(d[0], b, e) : new Y(d[0]);
       }
     }
   }
-  d = fb(d, m, b, e, h, l, g);
+  d = eb(d, m, b, e, h, l, g);
   return g ? d : new Y(d);
 };
-function Ib(a, b, c, d, e, g, f) {
+function Hb(a, b, c, d, e, g, f) {
   a = Z(this, a, b, c, d, e, g, f);
   return this.db ? a.then(function(h) {
     return e ? h : h && h.length ? e ? X(h, c, d) : new Y(h) : e ? [] : new Y([]);
   }) : a && a.length ? e ? X(a, c, d) : new Y(a) : e ? [] : new Y([]);
 }
-function Jb(a, b, c, d) {
+function Ib(a, b, c, d) {
   var e = [];
   if (a) {
     d = Math.min(a.length, d);
@@ -2972,15 +2973,15 @@ function Z(a, b, c, d, e, g, f, h) {
         }
       }
     } else {
-      Kb(this.map, a), this.depth && Kb(this.ctx, a);
+      Jb(this.map, a), this.depth && Jb(this.ctx, a);
     }
     b || this.reg.delete(a);
   }
-  this.db && (this.commit_task.push({del:a}), this.da && Bb(this));
+  this.db && (this.commit_task.push({del:a}), this.da && Ab(this));
   this.cache && this.cache.remove(a);
   return this;
 };
-function Kb(a, b) {
+function Jb(a, b) {
   var c = 0;
   if (a.constructor === Array) {
     for (var d = 0, e = void 0, g; d < a.length; d++) {
@@ -2994,8 +2995,8 @@ function Kb(a, b) {
       }
     }
   } else {
-    for (d = x(a), e = d.next(); !e.done; e = d.next()) {
-      g = e.value, e = g[0], (g = Kb(g[1], b)) ? c += g : a.delete(e);
+    for (d = w(a), e = d.next(); !e.done; e = d.next()) {
+      g = e.value, e = g[0], (g = Jb(g[1], b)) ? c += g : a.delete(e);
     }
   }
   return c;
@@ -3006,13 +3007,13 @@ function Kb(a, b) {
   }
   if (a) {
     var c = L(a) ? a : a.preset;
-    c && (yb[c] || console.warn("Preset not found: " + c), a = Object.assign({}, yb[c], a));
+    c && (xb[c] || console.warn("Preset not found: " + c), a = Object.assign({}, xb[c], a));
   } else {
     a = {};
   }
   c = a.context;
-  var d = !0 === c ? {depth:1} : c || {}, e = L(a.encoder) ? xb[a.encoder] : a.encode || a.encoder || pb;
-  this.encoder = e.encode ? e : "object" === typeof e ? new Ha(e) : {encode:e};
+  var d = !0 === c ? {depth:1} : c || {}, e = L(a.encoder) ? wb[a.encoder] : a.encode || a.encoder || ob;
+  this.encoder = e.encode ? e : "object" === typeof e ? new Ga(e) : {encode:e};
   this.resolution = a.resolution || 9;
   this.tokenize = c = a.tokenize || "strict";
   this.depth = "strict" === c && d.depth || 0;
@@ -3020,9 +3021,9 @@ function Kb(a, b) {
   this.fastupdate = !!a.fastupdate;
   this.score = a.score || null;
   (c = a.keystore || 0) && (this.keystore = c);
-  this.map = c ? new T(c) : new Map();
-  this.ctx = c ? new T(c) : new Map();
-  this.reg = b || (this.fastupdate ? c ? new T(c) : new Map() : c ? new U(c) : new Set());
+  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 U(c) : new Set());
   this.aa = d.resolution || 3;
   this.rtl = e.rtl || a.rtl || !1;
   this.cache = (c = a.cache || null) && new W(c);
@@ -3047,7 +3048,7 @@ t.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function Bb(a) {
+function Ab(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
@@ -3073,17 +3074,17 @@ t.update = function(a, b) {
     return c.add(a, b);
   }) : this.add(a, b);
 };
-function Lb(a) {
+function Kb(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), d = c.next(); !d.done; d = c.next()) {
+    for (c = w(a), d = c.next(); !d.done; d = c.next()) {
       var e = d.value;
       d = e[0];
-      (e = Lb(e[1])) ? b += e : a.delete(d);
+      (e = Kb(e[1])) ? b += e : a.delete(d);
     }
   }
   return b;
@@ -3092,17 +3093,17 @@ t.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);
+  Kb(this.map);
+  this.depth && Kb(this.ctx);
   return this;
 };
-t.searchCache = ob;
+t.searchCache = nb;
 t.export = function(a, b, c, d) {
   d = void 0 === d ? 0 : d;
   switch(d) {
     case 0:
       var e = "reg";
-      var g = Va(this.reg);
+      var g = Ua(this.reg);
       break;
     case 1:
       e = "cfg";
@@ -3110,29 +3111,29 @@ t.export = function(a, b, c, d) {
       break;
     case 2:
       e = "map";
-      g = Ra(this.map, this.reg.size);
+      g = Qa(this.map, this.reg.size);
       break;
     case 3:
       e = "ctx";
-      g = Ta(this.ctx, this.reg.size);
+      g = Sa(this.ctx, this.reg.size);
       break;
     default:
       return;
   }
-  return Xa.call(this, a, b, e, g, c, d);
+  return Wa.call(this, a, b, e, g, c, d);
 };
 t.import = function(a, b) {
   if (b) {
     switch(L(b) && (b = JSON.parse(b)), a = a.split("."), "json" === a[a.length - 1] && a.pop(), a = 1 < a.length ? a[1] : a[0], a) {
       case "reg":
         this.fastupdate = !1;
-        this.reg = Wa(b, this.reg);
+        this.reg = Va(b, this.reg);
         break;
       case "map":
-        this.map = Sa(b, this.map);
+        this.map = Ra(b, this.map);
         break;
       case "ctx":
-        this.ctx = Ua(b, this.ctx);
+        this.ctx = Ta(b, this.ctx);
     }
   }
 };
@@ -3141,12 +3142,12 @@ t.serialize = function(a) {
   if (!this.reg.size) {
     return "";
   }
-  for (var b = "", c = "", d = x(this.reg.keys()), e = d.next(); !e.done; e = d.next()) {
+  for (var b = "", c = "", d = w(this.reg.keys()), e = d.next(); !e.done; e = d.next()) {
     e = e.value, c || (c = typeof e), b += (b ? "," : "") + ("string" === c ? '"' + e + '"' : e);
   }
   b = "index.reg=new Set([" + b + "]);";
   d = "";
-  e = x(this.map.entries());
+  e = w(this.map.entries());
   for (var g = e.next(); !g.done; g = e.next()) {
     var f = g.value;
     g = f[0];
@@ -3164,9 +3165,9 @@ t.serialize = function(a) {
   }
   d = "index.map=new Map([" + d + "]);";
   e = "";
-  g = x(this.ctx.entries());
+  g = w(this.ctx.entries());
   for (f = g.next(); !f.done; f = g.next()) {
-    for (h = f.value, f = h[0], h = x(h[1].entries()), k = h.next(); !k.done; k = h.next()) {
+    for (h = f.value, f = h[0], h = w(h[1].entries()), k = h.next(); !k.done; k = h.next()) {
       l = k.value;
       k = l[0];
       l = l[1];
@@ -3188,12 +3189,12 @@ t.serialize = function(a) {
   e = "index.ctx=new Map([" + e + "]);";
   return a ? "function inject(index){" + b + d + e + "}" : b + d + e;
 };
-Pa(N.prototype);
-var Mb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), Nb = ["map", "ctx", "tag", "reg", "cfg"];
-function Ob(a, b) {
+Oa(N.prototype);
+var Lb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), Mb = ["map", "ctx", "tag", "reg", "cfg"];
+function Nb(a, b) {
   b = void 0 === b ? {} : b;
   if (!this) {
-    return new Ob(a, b);
+    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.");
@@ -3203,7 +3204,7 @@ function Ob(a, b) {
   this.db = null;
   this.h = {};
 }
-t = Ob.prototype;
+t = Nb.prototype;
 t.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
@@ -3215,10 +3216,10 @@ t.open = function() {
   var a = this;
   navigator.storage && navigator.storage.persist();
   return this.db || new Promise(function(b, c) {
-    var d = Mb.open(a.id + (a.field ? ":" + a.field : ""), 1);
+    var d = Lb.open(a.id + (a.field ? ":" + a.field : ""), 1);
     d.onupgradeneeded = function() {
       var e = a.db = this.result;
-      Nb.forEach(function(g) {
+      Mb.forEach(function(g) {
         e.objectStoreNames.contains(g) || e.createObjectStore(g);
       });
     };
@@ -3244,13 +3245,13 @@ t.close = function() {
   this.db = null;
 };
 t.destroy = function() {
-  return Mb.deleteDatabase(this.id + (this.field ? ":" + this.field : ""));
+  return Lb.deleteDatabase(this.id + (this.field ? ":" + this.field : ""));
 };
 t.clear = function() {
-  for (var a = this.db.transaction(Nb, "readwrite"), b = 0; b < Nb.length; b++) {
-    a.objectStore(Nb[b]).clear();
+  for (var a = this.db.transaction(Mb, "readwrite"), b = 0; b < Mb.length; b++) {
+    a.objectStore(Mb[b]).clear();
   }
-  return Pb(a);
+  return Ob(a);
 };
 t.get = function(a, b, c, d, e, g) {
   c = void 0 === c ? 0 : c;
@@ -3259,7 +3260,7 @@ t.get = function(a, b, c, d, e, g) {
   g = void 0 === g ? !1 : g;
   a = this.db.transaction(b ? "ctx" : "map", "readonly").objectStore(b ? "ctx" : "map").get(b ? b + ":" + a : a);
   var f = this;
-  return Pb(a).then(function(h) {
+  return Ob(a).then(function(h) {
     var k = [];
     if (!h || !h.length) {
       return k;
@@ -3294,7 +3295,7 @@ t.tag = function(a, b, c, d) {
   d = void 0 === d ? !1 : d;
   a = this.db.transaction("tag", "readonly").objectStore("tag").get(a);
   var e = this;
-  return Pb(a).then(function(g) {
+  return Ob(a).then(function(g) {
     if (!g || !g.length || c >= g.length) {
       return [];
     }
@@ -3308,7 +3309,7 @@ t.tag = function(a, b, c, d) {
 t.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] = Pb(b.get(a[d]));
+    c[d] = Ob(b.get(a[d]));
   }
   return Promise.all(c).then(function(e) {
     for (var g = 0; g < e.length; g++) {
@@ -3319,7 +3320,7 @@ t.enrich = function(a) {
 };
 t.has = function(a) {
   a = this.db.transaction("reg", "readonly").objectStore("reg").getKey(a);
-  return Pb(a);
+  return Ob(a);
 };
 t.search = null;
 t.info = function() {
@@ -3347,11 +3348,11 @@ t.transaction = function(a, b, c) {
 };
 t.commit = function(a, b, c) {
   var d = this, e, g, f;
-  return ta(function(h) {
+  return sa(function(h) {
     switch(h.h) {
       case 1:
         if (b) {
-          return F(h, d.clear(), 12);
+          return G(h, d.clear(), 12);
         }
         e = a.commit_task;
         a.commit_task = [];
@@ -3368,7 +3369,7 @@ t.commit = function(a, b, c) {
           h.h = 5;
           break;
         }
-        return F(h, d.clear(), 8);
+        return G(h, d.clear(), 8);
       case 8:
         b = !0;
         h.h = 6;
@@ -3382,12 +3383,12 @@ t.commit = function(a, b, c) {
           h.h = 3;
           break;
         }
-        c || (e = e.concat(ya(a.reg)));
+        c || (e = e.concat(xa(a.reg)));
         if (!e.length) {
           h.h = 10;
           break;
         }
-        return F(h, d.remove(e), 11);
+        return G(h, d.remove(e), 11);
       case 11:
       case 10:
         h.h = 3;
@@ -3395,20 +3396,20 @@ t.commit = function(a, b, c) {
       case 12:
         a.commit_task = [];
       case 3:
-        return a.reg.size ? F(h, d.transaction("map", "readwrite", function(k) {
-          for (var l = x(a.map), m = l.next(), n = {}; !m.done; n = {P:void 0, Y:void 0}, m = l.next()) {
+        return a.reg.size ? G(h, d.transaction("map", "readwrite", function(k) {
+          for (var l = w(a.map), m = l.next(), n = {}; !m.done; n = {P:void 0, Y:void 0}, m = l.next()) {
             m = m.value, n.Y = m[0], n.P = m[1], n.P.length && (b ? k.put(n.P, n.Y) : k.get(n.Y).onsuccess = function(p) {
               return function() {
                 var q = this.result, r;
                 if (q && q.length) {
-                  for (var v = Math.max(q.length, p.P.length), y = 0, z; y < v; y++) {
-                    if ((z = p.P[y]) && z.length) {
-                      if ((r = q[y]) && r.length) {
-                        for (var u = 0; u < z.length; u++) {
-                          r.push(z[u]);
+                  for (var v = Math.max(q.length, p.P.length), z = 0, x; z < v; z++) {
+                    if ((x = p.P[z]) && x.length) {
+                      if ((r = q[z]) && r.length) {
+                        for (var u = 0; u < x.length; u++) {
+                          r.push(x[u]);
                         }
                       } else {
-                        q[y] = z;
+                        q[z] = x;
                       }
                       r = 1;
                     }
@@ -3422,32 +3423,32 @@ t.commit = function(a, b, c) {
           }
         }), 13) : h.return();
       case 13:
-        return F(h, d.transaction("ctx", "readwrite", function(k) {
-          for (var l = x(a.ctx), m = l.next(), n = {}; !m.done; n = {W:void 0}, m = l.next()) {
+        return G(h, d.transaction("ctx", "readwrite", function(k) {
+          for (var l = w(a.ctx), m = l.next(), n = {}; !m.done; n = {W:void 0}, m = l.next()) {
             m = m.value;
             n.W = m[0];
-            m = x(m[1]);
+            m = w(m[1]);
             for (var p = m.next(), q = {}; !p.done; q = {R:void 0, Z:void 0}, p = m.next()) {
               p = p.value, q.Z = p[0], q.R = p[1], q.R.length && (b ? k.put(q.R, n.W + ":" + q.Z) : k.get(n.W + ":" + q.Z).onsuccess = function(r, v) {
                 return function() {
-                  var y = this.result, z;
-                  if (y && y.length) {
-                    for (var u = Math.max(y.length, r.R.length), w = 0, B; w < u; w++) {
-                      if ((B = r.R[w]) && B.length) {
-                        if ((z = y[w]) && z.length) {
-                          for (var D = 0; D < B.length; D++) {
-                            z.push(B[D]);
+                  var z = this.result, x;
+                  if (z && z.length) {
+                    for (var u = Math.max(z.length, r.R.length), y = 0, E; y < u; y++) {
+                      if ((E = r.R[y]) && E.length) {
+                        if ((x = z[y]) && x.length) {
+                          for (var A = 0; A < E.length; A++) {
+                            x.push(E[A]);
                           }
                         } else {
-                          y[w] = B;
+                          z[y] = E;
                         }
-                        z = 1;
+                        x = 1;
                       }
                     }
                   } else {
-                    y = r.R, z = 1;
+                    z = r.R, x = 1;
                   }
-                  z && k.put(y, v.W + ":" + r.Z);
+                  x && k.put(z, v.W + ":" + r.Z);
                 };
               }(q, n));
             }
@@ -3455,8 +3456,8 @@ t.commit = function(a, b, c) {
         }), 14);
       case 14:
         if (a.store) {
-          return F(h, d.transaction("reg", "readwrite", function(k) {
-            for (var l = x(a.store), m = l.next(); !m.done; m = l.next()) {
+          return G(h, d.transaction("reg", "readwrite", function(k) {
+            for (var l = w(a.store), m = l.next(); !m.done; m = l.next()) {
               var n = m.value;
               m = n[0];
               n = n[1];
@@ -3468,8 +3469,8 @@ t.commit = function(a, b, c) {
           h.h = 16;
           break;
         }
-        return F(h, d.transaction("reg", "readwrite", function(k) {
-          for (var l = x(a.reg.keys()), m = l.next(); !m.done; m = l.next()) {
+        return G(h, d.transaction("reg", "readwrite", function(k) {
+          for (var l = w(a.reg.keys()), m = l.next(); !m.done; m = l.next()) {
             k.put(1, m.value);
           }
         }), 16);
@@ -3478,8 +3479,8 @@ t.commit = function(a, b, c) {
           h.h = 20;
           break;
         }
-        return F(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 G(h, d.transaction("tag", "readwrite", function(k) {
+          for (var l = w(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;
@@ -3539,7 +3540,7 @@ t.remove = function(a) {
     }
   })]);
 };
-function Pb(a) {
+function Ob(a) {
   return new Promise(function(b, c) {
     a.onsuccess = function() {
       b(this.result);
@@ -3551,7 +3552,7 @@ function Pb(a) {
     a = null;
   });
 }
-;var Sb = {Index:N, Charset:xb, Encoder:Ha, Document:V, Worker:O, Resolver:Y, IndexedDB:Ob, Language:{}}, Tb = self, Ub;
+;var Sb = {Index:N, Charset:wb, Encoder:Ga, Document:V, Worker:Q, Resolver:Y, IndexedDB:Nb, Language:{}}, Tb = self, Ub;
 (Ub = Tb.define) && Ub.amd ? Ub([], function() {
   return Sb;
 }) : "object" === typeof Tb.exports ? Tb.exports = Sb : Tb.FlexSearch = Sb;
diff --git a/dist/flexsearch.es5.min.js b/dist/flexsearch.es5.min.js
index d04684a..4942dba 100644
--- a/dist/flexsearch.es5.min.js
+++ b/dist/flexsearch.es5.min.js
@@ -1,139 +1,139 @@
 /**!
- * FlexSearch.js v0.8.102 (ES5)
+ * FlexSearch.js v0.8.103 (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 t;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 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 C=ca(this);function E(a,b){if(b)a:{var c=C;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;
+(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var t;function aa(a){var b=0;return function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}}}function w(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 F(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.L=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={ma:b,na:!0};a.h=a.L}ja.prototype.return=function(a){this.B={return:a};this.h=this.L};function H(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)}
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+b+d+e+"}":b+d+e};Oa(N.prototype);var Lb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),Mb=["map","ctx","tag","reg","cfg"];
+function Nb(a,b){b=void 0===b?{}: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.support_tag_search=!1;this.db=null;this.h={}}t=Nb.prototype;t.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+t.open=function(){var a=this;navigator.storage&&navigator.storage.persist();return this.db||new Promise(function(b,c){var d=Lb.open(a.id+(a.field?":"+a.field:""),1);d.onupgradeneeded=function(){var e=a.db=this.result;Mb.forEach(function(h){e.objectStoreNames.contains(h)||e.createObjectStore(h)})};d.onblocked=function(e){console.error("blocked",e);c()};d.onerror=function(e){console.error(this.error,e);c()};d.onsuccess=function(){a.db=this.result;a.db.onversionchange=function(){a.close()};b(a)}})};
+t.close=function(){this.db.close();this.db=null};t.destroy=function(){return Lb.deleteDatabase(this.id+(this.field?":"+this.field:""))};t.clear=function(){for(var a=this.db.transaction(Mb,"readwrite"),b=0;b<Mb.length;b++)a.objectStore(Mb[b]).clear();return Qb(a)};
 t.get=function(a,b,c,d,e,h){c=void 0===c?0:c;d=void 0===d?0:d;e=void 0===e?!0:e;h=void 0===h?!1:h;a=this.db.transaction(b?"ctx":"map","readonly").objectStore(b?"ctx":"map").get(b?b+":"+a:a);var f=this;return Qb(a).then(function(g){var k=[];if(!g||!g.length)return k;if(e){if(!c&&!d&&1===g.length)return g[0];for(var l=0,m=void 0;l<g.length;l++)if((m=g[l])&&m.length)if(d>=m.length)d-=m.length;else{for(var p=c?d+Math.min(m.length-d,c):m.length,n=d;n<p;n++)k.push(m[n]);d=0;if(k.length===c)break}return h?
 f.enrich(k):k}return g})};t.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","readonly").objectStore("tag").get(a);var e=this;return Qb(a).then(function(h){if(!h||!h.length||c>=h.length)return[];if(!b&&!c)return h;h=h.slice(c,c+b);return d?e.enrich(h):h})};
 t.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]=Qb(b.get(a[d]));return Promise.all(c).then(function(e){for(var h=0;h<e.length;h++)e[h]={id:a[h],doc:e[h]?JSON.parse(e[h]):null};return e})};t.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Qb(a)};t.search=null;t.info=function(){};
 t.transaction=function(a,b,c){var d=this,e=this.h[a+":"+b];if(e)return c.call(this,e);var h=this.db.transaction(a,b);this.h[a+":"+b]=e=h.objectStore(a);return new Promise(function(f,g){h.onerror=function(k){d.h[a+":"+b]=null;h.abort();h=e=null;g(k)};h.oncomplete=function(k){h=e=d.h[a+":"+b]=null;f(k||!0)};return c.call(d,e)})};
-t.commit=function(a,b,c){var d=this,e,h,f;return ta(function(g){switch(g.h){case 1:if(b)return H(g,d.clear(),12);e=a.commit_task;a.commit_task=[];h=0;f=void 0;case 4:if(!(h<e.length)){g.h=6;break}f=e[h];if(!f.clear){e[h]=f.oa;g.h=5;break}return H(g,d.clear(),8);case 8:b=!0;g.h=6;break;case 5:h++;g.h=4;break;case 6:if(b){g.h=3;break}c||(e=e.concat(ya(a.reg)));if(!e.length){g.h=10;break}return H(g,d.remove(e),11);case 11:case 10:g.h=3;break;case 12:a.commit_task=[];case 3:return a.reg.size?H(g,d.transaction("map",
-"readwrite",function(k){for(var l=x(a.map),m=l.next(),p={};!m.done;p={P:void 0,Y:void 0},m=l.next())m=m.value,p.Y=m[0],p.P=m[1],p.P.length&&(b?k.put(p.P,p.Y):k.get(p.Y).onsuccess=function(n){return function(){var q=this.result,r;if(q&&q.length)for(var v=Math.max(q.length,n.P.length),y=0,z;y<v;y++){if((z=n.P[y])&&z.length){if((r=q[y])&&r.length)for(var u=0;u<z.length;u++)r.push(z[u]);else q[y]=z;r=1}}else q=n.P,r=1;r&&k.put(q,n.Y)}}(p))}),13):g.return();case 13:return H(g,d.transaction("ctx","readwrite",
-function(k){for(var l=x(a.ctx),m=l.next(),p={};!m.done;p={W:void 0},m=l.next()){m=m.value;p.W=m[0];m=x(m[1]);for(var n=m.next(),q={};!n.done;q={R:void 0,Z:void 0},n=m.next())n=n.value,q.Z=n[0],q.R=n[1],q.R.length&&(b?k.put(q.R,p.W+":"+q.Z):k.get(p.W+":"+q.Z).onsuccess=function(r,v){return function(){var y=this.result,z;if(y&&y.length)for(var u=Math.max(y.length,r.R.length),w=0,A;w<u;w++){if((A=r.R[w])&&A.length){if((z=y[w])&&z.length)for(var D=0;D<A.length;D++)z.push(A[D]);else y[w]=A;z=1}}else y=
-r.R,z=1;z&&k.put(y,v.W+":"+r.Z)}}(q,p))}}),14);case 14:if(a.store)return H(g,d.transaction("reg","readwrite",function(k){for(var l=x(a.store),m=l.next();!m.done;m=l.next()){var p=m.value;m=p[0];p=p[1];k.put("object"===typeof p?JSON.stringify(p):1,m)}}),16);if(a.bypass){g.h=16;break}return H(g,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){g.h=20;break}return H(g,d.transaction("tag","readwrite",function(k){for(var l=
-x(a.tag),m=l.next(),p={};!m.done;p={X:void 0,ba:void 0},m=l.next())m=m.value,p.ba=m[0],p.X=m[1],p.X.length&&(k.get(p.ba).onsuccess=function(n){return function(){var q=this.result;q=q&&q.length?q.concat(n.X):n.X;k.put(q,n.ba)}}(p))}),20);case 20:a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear(),g.h=0}})};
+t.commit=function(a,b,c){var d=this,e,h,f;return sa(function(g){switch(g.h){case 1:if(b)return G(g,d.clear(),12);e=a.commit_task;a.commit_task=[];h=0;f=void 0;case 4:if(!(h<e.length)){g.h=6;break}f=e[h];if(!f.clear){e[h]=f.oa;g.h=5;break}return G(g,d.clear(),8);case 8:b=!0;g.h=6;break;case 5:h++;g.h=4;break;case 6:if(b){g.h=3;break}c||(e=e.concat(xa(a.reg)));if(!e.length){g.h=10;break}return G(g,d.remove(e),11);case 11:case 10:g.h=3;break;case 12:a.commit_task=[];case 3:return a.reg.size?G(g,d.transaction("map",
+"readwrite",function(k){for(var l=w(a.map),m=l.next(),p={};!m.done;p={P:void 0,Y:void 0},m=l.next())m=m.value,p.Y=m[0],p.P=m[1],p.P.length&&(b?k.put(p.P,p.Y):k.get(p.Y).onsuccess=function(n){return function(){var q=this.result,r;if(q&&q.length)for(var v=Math.max(q.length,n.P.length),z=0,y;z<v;z++){if((y=n.P[z])&&y.length){if((r=q[z])&&r.length)for(var u=0;u<y.length;u++)r.push(y[u]);else q[z]=y;r=1}}else q=n.P,r=1;r&&k.put(q,n.Y)}}(p))}),13):g.return();case 13:return G(g,d.transaction("ctx","readwrite",
+function(k){for(var l=w(a.ctx),m=l.next(),p={};!m.done;p={W:void 0},m=l.next()){m=m.value;p.W=m[0];m=w(m[1]);for(var n=m.next(),q={};!n.done;q={R:void 0,Z:void 0},n=m.next())n=n.value,q.Z=n[0],q.R=n[1],q.R.length&&(b?k.put(q.R,p.W+":"+q.Z):k.get(p.W+":"+q.Z).onsuccess=function(r,v){return function(){var z=this.result,y;if(z&&z.length)for(var u=Math.max(z.length,r.R.length),x=0,E;x<u;x++){if((E=r.R[x])&&E.length){if((y=z[x])&&y.length)for(var A=0;A<E.length;A++)y.push(E[A]);else z[x]=E;y=1}}else z=
+r.R,y=1;y&&k.put(z,v.W+":"+r.Z)}}(q,p))}}),14);case 14:if(a.store)return G(g,d.transaction("reg","readwrite",function(k){for(var l=w(a.store),m=l.next();!m.done;m=l.next()){var p=m.value;m=p[0];p=p[1];k.put("object"===typeof p?JSON.stringify(p):1,m)}}),16);if(a.bypass){g.h=16;break}return G(g,d.transaction("reg","readwrite",function(k){for(var l=w(a.reg.keys()),m=l.next();!m.done;m=l.next())k.put(1,m.value)}),16);case 16:if(!a.tag){g.h=20;break}return G(g,d.transaction("tag","readwrite",function(k){for(var l=
+w(a.tag),m=l.next(),p={};!m.done;p={X:void 0,ba:void 0},m=l.next())m=m.value,p.ba=m[0],p.X=m[1],p.X.length&&(k.get(p.ba).onsuccess=function(n){return function(){var q=this.result;q=q&&q.length?q.concat(n.X):n.X;k.put(q,n.ba)}}(p))}),20);case 20:a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear(),g.h=0}})};
 function Rb(a,b,c){for(var d=a.value,e,h,f=0,g=0,k;g<d.length;g++){if(k=c?d:d[g]){for(var l=0,m,p;l<b.length;l++)if(p=b[l],m=k.indexOf(h?parseInt(p,10):p),0>m&&!h&&"string"===typeof p&&!isNaN(p)&&(m=k.indexOf(parseInt(p,10)))&&(h=1),0<=m)if(e=1,1<k.length)k.splice(m,1);else{d[g]=[];break}f+=k.length}if(c)break}f?e&&a.update(d):a.delete();a.continue()}
 t.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&&Rb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Rb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Rb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(var c=0;c<a.length;c++)b.delete(a[c])})])};
-function Qb(a){return new Promise(function(b,c){a.onsuccess=function(){b(this.result)};a.oncomplete=function(){b(this.result)};a.onerror=c;a=null})};var Sb={Index:N,Charset:xb,Encoder:Ha,Document:V,Worker:O,Resolver:Y,IndexedDB:Ob,Language:{}},Tb=self,Ub;(Ub=Tb.define)&&Ub.amd?Ub([],function(){return Sb}):"object"===typeof Tb.exports?Tb.exports=Sb:Tb.FlexSearch=Sb;}(this||self));
+function Qb(a){return new Promise(function(b,c){a.onsuccess=function(){b(this.result)};a.oncomplete=function(){b(this.result)};a.onerror=c;a=null})};var Sb={Index:N,Charset:wb,Encoder:Ga,Document:V,Worker:Q,Resolver:Y,IndexedDB:Nb,Language:{}},Tb=self,Ub;(Ub=Tb.define)&&Ub.amd?Ub([],function(){return Sb}):"object"===typeof Tb.exports?Tb.exports=Sb:Tb.FlexSearch=Sb;}(this||self));
diff --git a/dist/flexsearch.light.debug.js b/dist/flexsearch.light.debug.js
index 0a00824..51b4079 100644
--- a/dist/flexsearch.light.debug.js
+++ b/dist/flexsearch.light.debug.js
@@ -1,12 +1,12 @@
 /**!
- * FlexSearch.js v0.8.102 (Light/Debug)
+ * FlexSearch.js v0.8.103 (Light/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 r;
+var t;
 function u(a, c, b) {
   const e = typeof b, d = typeof a;
   if ("undefined" !== e) {
@@ -44,13 +44,13 @@ function u(a, c, b) {
   }
   return "undefined" === d ? c : a;
 }
-function x() {
+function w() {
   return Object.create(null);
 }
-function y(a, c) {
+function x(a, c) {
   return c.length - a.length;
 }
-;const z = /[^\p{L}\p{N}]+/u, A = /(\d{3})/g, B = /(\D)(\d{3})/g, C = /(\d{3})(\D)/g, D = "".normalize && /[\u0300-\u036f]/g;
+;const y = /[^\p{L}\p{N}]+/u, z = /(\d{3})/g, A = /(\D)(\d{3})/g, B = /(\d{3})(\D)/g, D = "".normalize && /[\u0300-\u036f]/g;
 function E(a) {
   if (!this || this.constructor !== E) {
     return new E(...arguments);
@@ -59,8 +59,8 @@ function E(a) {
     this.assign(arguments[c]);
   }
 }
-r = E.prototype;
-r.assign = function(a) {
+t = E.prototype;
+t.assign = function(a) {
   this.normalize = u(a.normalize, !0, this.normalize);
   let c = a.include, b = c || a.exclude || a.split;
   if ("object" === typeof b) {
@@ -82,7 +82,7 @@ r.assign = function(a) {
     this.numeric = e;
   } else {
     try {
-      this.split = u(b, z, this.split);
+      this.split = u(b, y, this.split);
     } catch (e) {
       this.split = /\s+/;
     }
@@ -118,7 +118,7 @@ r.assign = function(a) {
   }
   return this;
 };
-r.addMatcher = function(a, c) {
+t.addMatcher = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -132,7 +132,7 @@ r.addMatcher = function(a, c) {
   this.cache && F(this);
   return this;
 };
-r.addStemmer = function(a, c) {
+t.addStemmer = function(a, c) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, c);
   this.i += (this.i ? "|" : "") + a;
@@ -140,13 +140,13 @@ r.addStemmer = function(a, c) {
   this.cache && F(this);
   return this;
 };
-r.addFilter = function(a) {
+t.addFilter = function(a) {
   this.filter || (this.filter = new Set());
   this.filter.add(a);
   this.cache && F(this);
   return this;
 };
-r.addMapper = function(a, c) {
+t.addMapper = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -158,7 +158,7 @@ r.addMapper = function(a, c) {
   this.cache && F(this);
   return this;
 };
-r.addReplacer = function(a, c) {
+t.addReplacer = function(a, c) {
   "string" === typeof a && (a = new RegExp(a, "g"));
   this.replacer || (this.replacer = []);
   this.replacer.push(a, c || "");
@@ -169,7 +169,7 @@ function F(a) {
   a.h.clear();
   a.j.clear();
 }
-r.encode = function(a) {
+t.encode = function(a) {
   if (this.cache && a.length <= this.m) {
     if (this.l) {
       if (this.h.has(a)) {
@@ -181,7 +181,7 @@ r.encode = function(a) {
   }
   this.normalize && (a = "function" === typeof this.normalize ? this.normalize(a) : D ? a.normalize("NFKD").replace(D, "").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 "));
+  this.numeric && 3 < a.length && (a = a.replace(A, "$1 $2").replace(B, "$1 $2").replace(z, "$1 "));
   const c = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer);
   let b = [], e = this.split || "" === this.split ? a.split(this.split) : a;
   for (let g = 0, f, h; g < e.length; g++) {
@@ -210,16 +210,16 @@ r.encode = function(a) {
       }
     }
     let k;
-    this.stemmer && 2 < f.length && (this.u || (this.u = new RegExp("(?!^)(" + this.i + ")$")), f = f.replace(this.u, l => this.stemmer.get(l)), k = 1);
+    this.stemmer && 2 < f.length && (this.u || (this.u = new RegExp("(?!^)(" + this.i + ")$")), f = f.replace(this.u, r => this.stemmer.get(r)), k = 1);
     f && k && (f.length < this.minlength || this.filter && this.filter.has(f)) && (f = "");
     if (f && (this.mapper || this.dedupe && 1 < f.length)) {
       d = "";
-      for (let l = 0, t = "", q, n; l < f.length; l++) {
-        q = f.charAt(l), q === t && this.dedupe || ((n = this.mapper && this.mapper.get(q)) || "" === n ? n === t && this.dedupe || !(t = n) || (d += n) : d += t = q);
+      for (let r = 0, q = "", p, n; r < f.length; r++) {
+        p = f.charAt(r), p === q && this.dedupe || ((n = this.mapper && this.mapper.get(p)) || "" === n ? n === q && this.dedupe || !(q = n) || (d += n) : d += q = p);
       }
       f = d;
     }
-    this.matcher && 1 < f.length && (this.s || (this.s = new RegExp("(" + this.g + ")", "g")), f = f.replace(this.s, l => this.matcher.get(l)));
+    this.matcher && 1 < f.length && (this.s || (this.s = new RegExp("(" + this.g + ")", "g")), f = f.replace(this.s, r => this.matcher.get(r)));
     if (f && this.replacer) {
       for (d = 0; f && d < this.replacer.length; d += 2) {
         f = f.replace(this.replacer[d], this.replacer[d + 1]);
@@ -265,7 +265,7 @@ const I = {normalize:function(a) {
   return a.toLowerCase();
 }, dedupe:!1};
 const J = {memory:{resolution:1}, performance:{resolution:6, fastupdate:!0, context:{depth:1, resolution:3}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:9}}};
-x();
+w();
 K.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -273,20 +273,20 @@ K.prototype.add = function(a, c, b, e) {
     }
     c = this.encoder.encode(c);
     if (e = c.length) {
-      const l = x(), t = x(), q = this.depth, n = this.resolution;
+      const r = w(), q = w(), p = this.depth, n = this.resolution;
       for (let m = 0; m < e; m++) {
-        let p = c[this.rtl ? e - 1 - m : m];
-        var d = p.length;
-        if (d && (q || !t[p])) {
-          var g = this.score ? this.score(c, p, m, null, 0) : L(n, e, m), f = "";
+        let l = c[this.rtl ? e - 1 - m : m];
+        var d = l.length;
+        if (d && (p || !q[l])) {
+          var g = this.score ? this.score(c, l, m, null, 0) : L(n, e, m), f = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
                 for (g = 0; g < d; g++) {
                   for (var h = d; h > g; h--) {
-                    f = p.substring(g, h);
-                    var k = this.score ? this.score(c, p, m, f, g) : L(n, e, m, d, g);
-                    M(this, t, f, k, a, b);
+                    f = l.substring(g, h);
+                    var k = this.score ? this.score(c, l, m, f, g) : L(n, e, m, d, g);
+                    M(this, q, f, k, a, b);
                   }
                 }
                 break;
@@ -294,24 +294,24 @@ K.prototype.add = function(a, c, b, e) {
             case "reverse":
               if (1 < d) {
                 for (h = d - 1; 0 < h; h--) {
-                  f = p[h] + f, k = this.score ? this.score(c, p, m, f, h) : L(n, e, m, d, h), M(this, t, f, k, a, b);
+                  f = l[h] + f, k = this.score ? this.score(c, l, m, f, h) : L(n, e, m, d, h), M(this, q, f, k, a, b);
                 }
                 f = "";
               }
             case "forward":
               if (1 < d) {
                 for (h = 0; h < d; h++) {
-                  f += p[h], M(this, t, f, g, a, b);
+                  f += l[h], M(this, q, f, g, a, b);
                 }
                 break;
               }
             default:
-              if (M(this, t, p, g, a, b), q && 1 < e && m < e - 1) {
-                for (d = x(), f = this.A, g = p, h = Math.min(q + 1, e - m), d[g] = 1, k = 1; k < h; k++) {
-                  if ((p = c[this.rtl ? e - 1 - m - k : m + k]) && !d[p]) {
-                    d[p] = 1;
-                    const v = this.score ? this.score(c, g, m, p, k) : L(f + (e / 2 > f ? 0 : 1), e, m, h - 1, k - 1), w = this.bidirectional && p > g;
-                    M(this, l, w ? g : p, v, a, b, w ? p : g);
+              if (M(this, q, l, g, a, b), p && 1 < e && m < e - 1) {
+                for (d = w(), f = this.A, g = l, h = Math.min(p + 1, e - m), d[g] = 1, k = 1; k < h; k++) {
+                  if ((l = c[this.rtl ? e - 1 - m - k : m + k]) && !d[l]) {
+                    d[l] = 1;
+                    const v = this.score ? this.score(c, g, m, l, k) : L(f + (e / 2 > f ? 0 : 1), e, m, h - 1, k - 1), C = this.bidirectional && l > g;
+                    M(this, r, C ? g : l, v, a, b, C ? l : g);
                   }
                 }
               }
@@ -326,7 +326,7 @@ K.prototype.add = function(a, c, b, e) {
 function M(a, c, b, e, d, g, f) {
   let h = f ? a.ctx : a.map, k;
   if (!c[b] || f && !(k = c[b])[f]) {
-    f ? (c = k || (c[b] = x()), c[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : c[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[e] || (h[e] = []), g && h.includes(d) || (h.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(h) : a.reg.set(d, [h])));
+    f ? (c = k || (c[b] = w()), c[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : c[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[e] || (h[e] = []), g && h.includes(d) || (h.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(h) : a.reg.set(d, [h])));
   }
 }
 function L(a, c, b, e, d) {
@@ -376,65 +376,66 @@ function L(a, c, b, e, d) {
   } else {
     h = !0;
   }
-  var l = this.encoder.encode(a);
-  b = l.length;
+  b = this.encoder.encode(a);
+  a = b.length;
   c || !h || (c = 100);
-  if (1 === b) {
-    return O.call(this, l[0], "", c, d);
+  if (1 === a) {
+    return O.call(this, b[0], "", c, d);
   }
   g = this.depth && !1 !== g;
-  if (2 === b && g && !f) {
-    return O.call(this, l[0], l[1], c, d);
+  if (2 === a && g && !f) {
+    return O.call(this, b[0], b[1], c, d);
   }
-  let t = h = 0;
-  if (1 < b) {
-    const n = x(), m = [];
-    for (let p = 0, v; p < b; p++) {
-      if ((v = l[p]) && !n[v]) {
-        if (f || P(this, v)) {
-          m.push(v), n[v] = 1;
+  var r = h = 0;
+  if (1 < a) {
+    var q = w();
+    const n = [];
+    for (let m = 0, l; m < a; m++) {
+      if ((l = b[m]) && !q[l]) {
+        if (f || P(this, l)) {
+          n.push(l), q[l] = 1;
         } else {
           return e;
         }
-        const w = v.length;
-        h = Math.max(h, w);
-        t = t ? Math.min(t, w) : w;
+        const v = l.length;
+        h = Math.max(h, v);
+        r = r ? Math.min(r, v) : v;
       }
     }
-    l = m;
-    b = a.length;
+    b = n;
+    a = b.length;
   }
-  if (!b) {
+  if (!a) {
     return e;
   }
-  a = 0;
-  if (1 === b) {
-    return O.call(this, l[0], "", c, d);
+  q = 0;
+  if (1 === a) {
+    return O.call(this, b[0], "", c, d);
   }
-  if (2 === b && g && !f) {
-    return O.call(this, l[0], l[1], c, d);
+  if (2 === a && g && !f) {
+    return O.call(this, b[0], b[1], c, d);
   }
-  if (1 < b) {
+  if (1 < a) {
     if (g) {
-      var q = l[0];
-      a = 1;
+      var p = b[0];
+      q = 1;
     } else {
-      9 < h && 3 < h / t && l.sort(y);
+      9 < h && 3 < h / r && b.sort(x);
     }
   }
   k || 0 === k || (k = this.resolution);
-  for (let n, m; a < b; a++) {
-    m = l[a];
-    q ? (n = P(this, m, q), n = Q(n, e, f, this.A), f && !1 === n && e.length || (q = m)) : (n = P(this, m, ""), n = Q(n, e, f, k));
+  for (let n, m; q < a; q++) {
+    m = b[q];
+    p ? (n = P(this, m, p), n = Q(n, e, f, this.A), f && !1 === n && e.length || (p = m)) : (n = P(this, m, ""), n = Q(n, e, f, k));
     if (n) {
       return n;
     }
-    if (f && a === b - 1) {
+    if (f && q === a - 1) {
       g = e.length;
       if (!g) {
-        if (q) {
-          q = "";
-          a = -1;
+        if (p) {
+          p = "";
+          q = -1;
           continue;
         }
         return e;
@@ -445,30 +446,30 @@ function L(a, c, b, e, d) {
     }
   }
   a: {
-    q = f;
-    b = e.length;
+    p = f;
+    g = e.length;
     f = [];
-    g = x();
-    for (let n = 0, m, p, v, w; n < k; n++) {
-      for (a = 0; a < b; a++) {
-        if (v = e[a], n < v.length && (m = v[n])) {
-          for (h = 0; h < m.length; h++) {
-            p = m[h], (l = g[p]) ? g[p]++ : (l = 0, g[p] = 1), w = f[l] || (f[l] = []), w.push(p);
+    a = w();
+    for (let n = 0, m, l, v, C; n < k; n++) {
+      for (h = 0; h < g; h++) {
+        if (v = e[h], n < v.length && (m = v[n])) {
+          for (r = 0; r < m.length; r++) {
+            l = m[r], (b = a[l]) ? a[l]++ : (b = 0, a[l] = 1), C = f[b] || (f[b] = []), C.push(l);
           }
         }
       }
     }
     if (k = f.length) {
-      if (q) {
+      if (p) {
         if (1 < f.length) {
           b: {
-            for (k = [], e = x(), q = f.length, l = q - 1; 0 <= l; l--) {
-              for (q = f[l], g = q.length, a = 0; a < g; a++) {
-                if (b = q[a], !e[b]) {
-                  if (e[b] = 1, d) {
+            for (k = [], e = w(), p = f.length, b = p - 1; 0 <= b; b--) {
+              for (p = f[b], a = p.length, h = 0; h < a; h++) {
+                if (g = p[h], !e[g]) {
+                  if (e[g] = 1, d) {
                     d--;
                   } else {
-                    if (k.push(b), k.length === c) {
+                    if (k.push(g), k.length === c) {
                       break b;
                     }
                   }
@@ -481,7 +482,7 @@ function L(a, c, b, e, d) {
         }
         f = k;
       } else {
-        if (k < b) {
+        if (k < g) {
           e = [];
           break a;
         }
@@ -590,21 +591,21 @@ function R(a, c) {
   this.rtl = d.rtl || a.rtl || !1;
   this.cache = (b = a.cache || null) && new H(b);
 }
-r = K.prototype;
-r.clear = function() {
+t = K.prototype;
+t.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
   this.cache && this.cache.clear();
   return this;
 };
-r.append = function(a, c) {
+t.append = function(a, c) {
   return this.add(a, c, !0);
 };
-r.contain = function(a) {
+t.contain = function(a) {
   return this.reg.has(a);
 };
-r.update = function(a, c) {
+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);
 };
@@ -622,7 +623,7 @@ function S(a) {
   }
   return c;
 }
-r.cleanup = function() {
+t.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
@@ -630,8 +631,9 @@ r.cleanup = function() {
   this.depth && S(this.ctx);
   return this;
 };
-r.searchCache = function(a, c, b) {
+t.searchCache = function(a, c, b) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new H());
   let e = this.cache.get(a);
   if (!e) {
     e = this.search(a, c, b);
diff --git a/dist/flexsearch.light.min.js b/dist/flexsearch.light.min.js
index 2654ad9..43024cb 100644
--- a/dist/flexsearch.light.min.js
+++ b/dist/flexsearch.light.min.js
@@ -1,27 +1,28 @@
 /**!
- * FlexSearch.js v0.8.102 (Light)
+ * FlexSearch.js v0.8.103 (Light)
  * 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 r;function u(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 g=new Map(b);for(var f of a)g.set(f[0],f[1]);return g}if(c===Set){f=new Set(b);for(g of a.values())f.add(g);return f}}}return a}return b}return"undefined"===d?c:a}function x(){return Object.create(null)}function y(a,c){return c.length-a.length};const z=/[^\p{L}\p{N}]+/u,A=/(\d{3})/g,B=/(\D)(\d{3})/g,C=/(\d{3})(\D)/g,D="".normalize&&/[\u0300-\u036f]/g;function E(a){if(!this||this.constructor!==E)return new E(...arguments);for(let c=0;c<arguments.length;c++)this.assign(arguments[c])}r=E.prototype;
-r.assign=function(a){this.normalize=u(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split;if("object"===typeof b){let e=!c,d="";a.include||(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(g){this.split=/\s+/}this.numeric=e}else{try{this.split=u(b,z,this.split)}catch(e){this.split=
+(function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var t;function u(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 g=new Map(b);for(var f of a)g.set(f[0],f[1]);return g}if(c===Set){f=new Set(b);for(g of a.values())f.add(g);return f}}}return a}return b}return"undefined"===d?c:a}function w(){return Object.create(null)}function x(a,c){return c.length-a.length};const y=/[^\p{L}\p{N}]+/u,z=/(\d{3})/g,A=/(\D)(\d{3})/g,B=/(\d{3})(\D)/g,D="".normalize&&/[\u0300-\u036f]/g;function E(a){if(!this||this.constructor!==E)return new E(...arguments);for(let c=0;c<arguments.length;c++)this.assign(arguments[c])}t=E.prototype;
+t.assign=function(a){this.normalize=u(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split;if("object"===typeof b){let e=!c,d="";a.include||(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(g){this.split=/\s+/}this.numeric=e}else{try{this.split=u(b,y,this.split)}catch(e){this.split=
 /\s+/}this.numeric=u(this.numeric,!0)}this.prepare=u(a.prepare,null,this.prepare);this.finalize=u(a.finalize,null,this.finalize);this.rtl=a.rtl||!1;this.dedupe=u(a.dedupe,!1,this.dedupe);this.filter=u((b=a.filter)&&new Set(b),null,this.filter);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);if(this.cache=b=u(a.cache,!0,this.cache))this.l=null,this.v="number"===typeof b?b:2E5,this.h=new Map,this.j=new Map,this.o=this.m=128;this.g="";this.s=null;this.i="";this.u=null;if(this.matcher)for(const e of this.matcher.keys())this.g+=(this.g?"|":"")+e;if(this.stemmer)for(const e of this.stemmer.keys())this.i+=(this.i?"|":"")+e;return this};
-r.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length)return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.g+=(this.g?"|":"")+a;this.s=null;this.cache&&F(this);return this};r.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.i+=(this.i?"|":"")+a;this.u=null;this.cache&&F(this);return this};
-r.addFilter=function(a){this.filter||(this.filter=new Set);this.filter.add(a);this.cache&&F(this);return this};r.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&&F(this);return this};r.addReplacer=function(a,c){"string"===typeof a&&(a=new RegExp(a,"g"));this.replacer||(this.replacer=[]);this.replacer.push(a,c||"");this.cache&&F(this);return this};
+t.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length)return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.g+=(this.g?"|":"")+a;this.s=null;this.cache&&F(this);return this};t.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.i+=(this.i?"|":"")+a;this.u=null;this.cache&&F(this);return this};
+t.addFilter=function(a){this.filter||(this.filter=new Set);this.filter.add(a);this.cache&&F(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&&F(this);return this};t.addReplacer=function(a,c){"string"===typeof a&&(a=new RegExp(a,"g"));this.replacer||(this.replacer=[]);this.replacer.push(a,c||"");this.cache&&F(this);return this};
 function F(a){a.h.clear();a.j.clear()}
-r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.h.has(a))return this.h.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&(a="function"===typeof this.normalize?this.normalize(a):D?a.normalize("NFKD").replace(D,"").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,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],e=this.split||
-""===this.split?a.split(this.split):a;for(let g=0,f,h;g<e.length;g++){if(!(f=h=e[g]))continue;if(f.length<this.minlength)continue;if(c){b.push(f);continue}if(this.filter&&this.filter.has(f))continue;if(this.cache&&f.length<=this.o)if(this.l){var d=this.j.get(f);if(d||""===d){d&&b.push(d);continue}}else this.l=setTimeout(G,50,this);let k;this.stemmer&&2<f.length&&(this.u||(this.u=new RegExp("(?!^)("+this.i+")$")),f=f.replace(this.u,l=>this.stemmer.get(l)),k=1);f&&k&&(f.length<this.minlength||this.filter&&
-this.filter.has(f))&&(f="");if(f&&(this.mapper||this.dedupe&&1<f.length)){d="";for(let l=0,t="",q,n;l<f.length;l++)q=f.charAt(l),q===t&&this.dedupe||((n=this.mapper&&this.mapper.get(q))||""===n?n===t&&this.dedupe||!(t=n)||(d+=n):d+=t=q);f=d}this.matcher&&1<f.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),f=f.replace(this.s,l=>this.matcher.get(l)));if(f&&this.replacer)for(d=0;f&&d<this.replacer.length;d+=2)f=f.replace(this.replacer[d],this.replacer[d+1]);this.cache&&h.length<=this.o&&(this.j.set(h,
+t.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.h.has(a))return this.h.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&(a="function"===typeof this.normalize?this.normalize(a):D?a.normalize("NFKD").replace(D,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(A,"$1 $2").replace(B,"$1 $2").replace(z,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],e=this.split||
+""===this.split?a.split(this.split):a;for(let g=0,f,h;g<e.length;g++){if(!(f=h=e[g]))continue;if(f.length<this.minlength)continue;if(c){b.push(f);continue}if(this.filter&&this.filter.has(f))continue;if(this.cache&&f.length<=this.o)if(this.l){var d=this.j.get(f);if(d||""===d){d&&b.push(d);continue}}else this.l=setTimeout(G,50,this);let k;this.stemmer&&2<f.length&&(this.u||(this.u=new RegExp("(?!^)("+this.i+")$")),f=f.replace(this.u,r=>this.stemmer.get(r)),k=1);f&&k&&(f.length<this.minlength||this.filter&&
+this.filter.has(f))&&(f="");if(f&&(this.mapper||this.dedupe&&1<f.length)){d="";for(let r=0,q="",p,n;r<f.length;r++)p=f.charAt(r),p===q&&this.dedupe||((n=this.mapper&&this.mapper.get(p))||""===n?n===q&&this.dedupe||!(q=n)||(d+=n):d+=q=p);f=d}this.matcher&&1<f.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),f=f.replace(this.s,r=>this.matcher.get(r)));if(f&&this.replacer)for(d=0;f&&d<this.replacer.length;d+=2)f=f.replace(this.replacer[d],this.replacer[d+1]);this.cache&&h.length<=this.o&&(this.j.set(h,
 f),this.j.size>this.v&&(this.j.clear(),this.o=this.o/1.1|0));f&&b.push(f)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.h.set(a,b),this.h.size>this.v&&(this.h.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.h.clear();a.j.clear()};function H(a){this.limit=a&&!0!==a?a:1E3;this.cache=new Map;this.g=""}H.prototype.set=function(a,c){this.cache.set(this.g=a,c);this.cache.size>this.limit&&this.cache.delete(this.cache.keys().next().value)};H.prototype.get=function(a){const c=this.cache.get(a);c&&this.g!==a&&(this.cache.delete(a),this.cache.set(this.g=a,c));return c};H.prototype.remove=function(a){for(const c of this.cache){const b=c[0];c[1].includes(a)&&this.cache.delete(b)}};
-H.prototype.clear=function(){this.cache.clear();this.g=""};const I={normalize:function(a){return a.toLowerCase()},dedupe:!1};const J={memory:{resolution:1},performance:{resolution:6,fastupdate:!0,context:{depth:1,resolution:3}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:9}}};x();K.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=x(),t=x(),q=this.depth,n=this.resolution;for(let m=0;m<e;m++){let p=c[this.rtl?e-1-m:m];var d=p.length;if(d&&(q||!t[p])){var g=this.score?this.score(c,p,m,null,0):L(n,e,m),f="";switch(this.tokenize){case "full":if(2<d){for(g=0;g<d;g++)for(var h=d;h>g;h--){f=p.substring(g,h);var k=this.score?this.score(c,p,m,f,g):L(n,e,m,d,g);M(this,t,f,k,a,b)}break}case "reverse":if(1<
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-n[v]=1;else return e;const w=v.length;h=Math.max(h,w);t=t?Math.min(t,w):w}l=m;b=a.length}if(!b)return e;a=0;if(1===b)return O.call(this,l[0],"",c,d);if(2===b&&g&&!f)return O.call(this,l[0],l[1],c,d);if(1<b)if(g){var q=l[0];a=1}else 9<h&&3<h/t&&l.sort(y);k||0===k||(k=this.resolution);for(let n,m;a<b;a++){m=l[a];q?(n=P(this,m,q),n=Q(n,e,f,this.A),f&&!1===n&&e.length||(q=m)):(n=P(this,m,""),n=Q(n,e,f,k));if(n)return n;if(f&&a===b-1){g=e.length;if(!g){if(q){q="";a=-1;continue}return e}if(1===g)return N(e[0],
-c,d)}}a:{q=f;b=e.length;f=[];g=x();for(let n=0,m,p,v,w;n<k;n++)for(a=0;a<b;a++)if(v=e[a],n<v.length&&(m=v[n]))for(h=0;h<m.length;h++)p=m[h],(l=g[p])?g[p]++:(l=0,g[p]=1),w=f[l]||(f[l]=[]),w.push(p);if(k=f.length)if(q){if(1<f.length)b:for(k=[],e=x(),q=f.length,l=q-1;0<=l;l--)for(q=f[l],g=q.length,a=0;a<g;a++){if(b=q[a],!e[b])if(e[b]=1,d)d--;else if(k.push(b),k.length===c)break b}else k=(f=f[0]).length>c||d?f.slice(d,c+d):f;f=k}else{if(k<b){e=[];break a}f=f[k-1];if(c||d)if(f.length>c||d)f=f.slice(d,
+H.prototype.clear=function(){this.cache.clear();this.g=""};const I={normalize:function(a){return a.toLowerCase()},dedupe:!1};const J={memory:{resolution:1},performance:{resolution:6,fastupdate:!0,context:{depth:1,resolution:3}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:9}}};w();K.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 r=w(),q=w(),p=this.depth,n=this.resolution;for(let m=0;m<e;m++){let l=c[this.rtl?e-1-m:m];var d=l.length;if(d&&(p||!q[l])){var g=this.score?this.score(c,l,m,null,0):L(n,e,m),f="";switch(this.tokenize){case "full":if(2<d){for(g=0;g<d;g++)for(var h=d;h>g;h--){f=l.substring(g,h);var k=this.score?this.score(c,l,m,f,g):L(n,e,m,d,g);M(this,q,f,k,a,b)}break}case "reverse":if(1<
+d){for(h=d-1;0<h;h--)f=l[h]+f,k=this.score?this.score(c,l,m,f,h):L(n,e,m,d,h),M(this,q,f,k,a,b);f=""}case "forward":if(1<d){for(h=0;h<d;h++)f+=l[h],M(this,q,f,g,a,b);break}default:if(M(this,q,l,g,a,b),p&&1<e&&m<e-1)for(d=w(),f=this.A,g=l,h=Math.min(p+1,e-m),d[g]=1,k=1;k<h;k++)if((l=c[this.rtl?e-1-m-k:m+k])&&!d[l]){d[l]=1;const v=this.score?this.score(c,g,m,l,k):L(f+(e/2>f?0:1),e,m,h-1,k-1),C=this.bidirectional&&l>g;M(this,r,C?g:l,v,a,b,C?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};
+function M(a,c,b,e,d,g,f){let h=f?a.ctx:a.map,k;if(!c[b]||f&&!(k=c[b])[f])f?(c=k||(c[b]=w()),c[f]=1,(k=h.get(f))?h=k:h.set(f,h=new Map)):c[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[e]||(h[e]=[]),g&&h.includes(d)||(h.push(d),a.fastupdate&&((c=a.reg.get(d))?c.push(h):a.reg.set(d,[h])))}function L(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};function N(a,c,b){if(1===a.length)return a=a[0],a=b||a.length>c?c?a.slice(b,b+c):a.slice(b):a;let e=[];for(let d=0,g,f;d<a.length;d++)if((g=a[d])&&(f=g.length)){if(b){if(b>=f){b-=f;continue}b<f&&(g=c?g.slice(b,b+c):g.slice(b),f=g.length,b=0)}if(e.length)f>c&&(g=g.slice(0,c),f=g.length);else if(f>=c)return f>c&&(g=g.slice(0,c)),g;e.push(g);c-=f;if(!c)break}return e.length?e=1<e.length?[].concat.apply([],e):e[0]:e};K.prototype.search=function(a,c,b){b||(c||"object"!==typeof a?"object"===typeof c&&(b=c,c=0):(b=a,a=""));var e=[],d=0;if(b){a=b.query||a;c=b.limit||c;d=b.offset||0;var g=b.context;var f=b.suggest;var h=!0;var k=b.resolution}else h=!0;b=this.encoder.encode(a);a=b.length;c||!h||(c=100);if(1===a)return O.call(this,b[0],"",c,d);g=this.depth&&!1!==g;if(2===a&&g&&!f)return O.call(this,b[0],b[1],c,d);var r=h=0;if(1<a){var q=w();const n=[];for(let m=0,l;m<a;m++)if((l=b[m])&&!q[l]){if(f||P(this,l))n.push(l),
+q[l]=1;else return e;const v=l.length;h=Math.max(h,v);r=r?Math.min(r,v):v}b=n;a=b.length}if(!a)return e;q=0;if(1===a)return O.call(this,b[0],"",c,d);if(2===a&&g&&!f)return O.call(this,b[0],b[1],c,d);if(1<a)if(g){var p=b[0];q=1}else 9<h&&3<h/r&&b.sort(x);k||0===k||(k=this.resolution);for(let n,m;q<a;q++){m=b[q];p?(n=P(this,m,p),n=Q(n,e,f,this.A),f&&!1===n&&e.length||(p=m)):(n=P(this,m,""),n=Q(n,e,f,k));if(n)return n;if(f&&q===a-1){g=e.length;if(!g){if(p){p="";q=-1;continue}return e}if(1===g)return N(e[0],
+c,d)}}a:{p=f;g=e.length;f=[];a=w();for(let n=0,m,l,v,C;n<k;n++)for(h=0;h<g;h++)if(v=e[h],n<v.length&&(m=v[n]))for(r=0;r<m.length;r++)l=m[r],(b=a[l])?a[l]++:(b=0,a[l]=1),C=f[b]||(f[b]=[]),C.push(l);if(k=f.length)if(p){if(1<f.length)b:for(k=[],e=w(),p=f.length,b=p-1;0<=b;b--)for(p=f[b],a=p.length,h=0;h<a;h++){if(g=p[h],!e[g])if(e[g]=1,d)d--;else if(k.push(g),k.length===c)break b}else k=(f=f[0]).length>c||d?f.slice(d,c+d):f;f=k}else{if(k<g){e=[];break a}f=f[k-1];if(c||d)if(f.length>c||d)f=f.slice(d,
 c+d)}e=f}return e};function O(a,c,b,e){return(a=P(this,a,c))&&a.length?N(a,b,e):[]}function Q(a,c,b,e){let d=[];if(a){e=Math.min(a.length,e);for(let g=0,f;g<e;g++)(f=a[g])&&f&&(d[g]=f);if(d.length){c.push(d);return}}return!b&&d}function P(a,c,b){let e;b&&(e=a.bidirectional&&c>b);a=b?(a=a.ctx.get(e?c:b))&&a.get(e?b:c):a.map.get(c);return a};K.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 g=d.indexOf(a);g===b.length-1?d.pop():d.splice(g,1)}}else R(this.map,a),this.depth&&R(this.ctx,a);c||this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
 function R(a,c){let b=0;if(a.constructor===Array)for(let e=0,d,g;e<a.length;e++){if((d=a[e])&&d.length)if(g=d.indexOf(c),0<=g){1<d.length?(d.splice(g,1),b++):delete a[e];break}else b++}else for(let e of a){const d=e[0],g=R(e[1],c);g?b+=g:a.delete(d)}return b};function K(a,c){if(!this||this.constructor!==K)return new K(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},J[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=a.encode||a.encoder||I;this.encoder=d.encode?d:"object"===typeof d?new E(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=a.tokenize||"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.A=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new H(b)}r=K.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};r.append=function(a,c){return this.add(a,c,!0)};r.contain=function(a){return this.reg.has(a)};r.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 S(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){const e=b[0],d=S(b[1]);d?c+=d:a.delete(e)}return c}r.cleanup=function(){if(!this.fastupdate)return this;S(this.map);this.depth&&S(this.ctx);return this};r.searchCache=function(a,c,b){a=("object"===typeof a?""+a.query:a).toLowerCase();let e=this.cache.get(a);if(!e){e=this.search(a,c,b);if(e.then){const d=this;e.then(function(g){d.cache.set(a,g);return g})}this.cache.set(a,e)}return e};const T={Index:K,Charset:null,Encoder:E,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}},U=self;let V;(V=U.define)&&V.amd?V([],function(){return T}):"object"===typeof U.exports?U.exports=T:U.FlexSearch=T;}(this||self));
+this.ctx=new Map;this.reg=c||(this.fastupdate?new Map:new Set);this.A=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new H(b)}t=K.prototype;t.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};t.append=function(a,c){return this.add(a,c,!0)};t.contain=function(a){return 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 S(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){const e=b[0],d=S(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;S(this.map);this.depth&&S(this.ctx);return this};
+t.searchCache=function(a,c,b){a=("object"===typeof a?""+a.query:a).toLowerCase();this.cache||(this.cache=new H);let e=this.cache.get(a);if(!e){e=this.search(a,c,b);if(e.then){const d=this;e.then(function(g){d.cache.set(a,g);return g})}this.cache.set(a,e)}return e};const T={Index:K,Charset:null,Encoder:E,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}},U=self;let V;(V=U.define)&&V.amd?V([],function(){return T}):"object"===typeof U.exports?U.exports=T:U.FlexSearch=T;}(this||self));
diff --git a/dist/flexsearch.light.module.debug.js b/dist/flexsearch.light.module.debug.js
index 9fa849e..98cd831 100644
--- a/dist/flexsearch.light.module.debug.js
+++ b/dist/flexsearch.light.module.debug.js
@@ -1,11 +1,11 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle/Debug)
+ * FlexSearch.js v0.8.103 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
-var r;
+var t;
 function u(a, c, b) {
   const e = typeof b, d = typeof a;
   if ("undefined" !== e) {
@@ -43,13 +43,13 @@ function u(a, c, b) {
   }
   return "undefined" === d ? c : a;
 }
-function x() {
+function w() {
   return Object.create(null);
 }
-function y(a, c) {
+function x(a, c) {
   return c.length - a.length;
 }
-;const z = /[^\p{L}\p{N}]+/u, A = /(\d{3})/g, B = /(\D)(\d{3})/g, C = /(\d{3})(\D)/g, D = "".normalize && /[\u0300-\u036f]/g;
+;const y = /[^\p{L}\p{N}]+/u, z = /(\d{3})/g, A = /(\D)(\d{3})/g, B = /(\d{3})(\D)/g, D = "".normalize && /[\u0300-\u036f]/g;
 function E(a) {
   if (!this || this.constructor !== E) {
     return new E(...arguments);
@@ -58,8 +58,8 @@ function E(a) {
     this.assign(arguments[c]);
   }
 }
-r = E.prototype;
-r.assign = function(a) {
+t = E.prototype;
+t.assign = function(a) {
   this.normalize = u(a.normalize, !0, this.normalize);
   let c = a.include, b = c || a.exclude || a.split;
   if ("object" === typeof b) {
@@ -81,7 +81,7 @@ r.assign = function(a) {
     this.numeric = e;
   } else {
     try {
-      this.split = u(b, z, this.split);
+      this.split = u(b, y, this.split);
     } catch (e) {
       this.split = /\s+/;
     }
@@ -117,7 +117,7 @@ r.assign = function(a) {
   }
   return this;
 };
-r.addMatcher = function(a, c) {
+t.addMatcher = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -131,7 +131,7 @@ r.addMatcher = function(a, c) {
   this.cache && F(this);
   return this;
 };
-r.addStemmer = function(a, c) {
+t.addStemmer = function(a, c) {
   this.stemmer || (this.stemmer = new Map());
   this.stemmer.set(a, c);
   this.i += (this.i ? "|" : "") + a;
@@ -139,13 +139,13 @@ r.addStemmer = function(a, c) {
   this.cache && F(this);
   return this;
 };
-r.addFilter = function(a) {
+t.addFilter = function(a) {
   this.filter || (this.filter = new Set());
   this.filter.add(a);
   this.cache && F(this);
   return this;
 };
-r.addMapper = function(a, c) {
+t.addMapper = function(a, c) {
   if ("object" === typeof a) {
     return this.addReplacer(a, c);
   }
@@ -157,7 +157,7 @@ r.addMapper = function(a, c) {
   this.cache && F(this);
   return this;
 };
-r.addReplacer = function(a, c) {
+t.addReplacer = function(a, c) {
   "string" === typeof a && (a = new RegExp(a, "g"));
   this.replacer || (this.replacer = []);
   this.replacer.push(a, c || "");
@@ -168,7 +168,7 @@ function F(a) {
   a.h.clear();
   a.j.clear();
 }
-r.encode = function(a) {
+t.encode = function(a) {
   if (this.cache && a.length <= this.m) {
     if (this.l) {
       if (this.h.has(a)) {
@@ -180,7 +180,7 @@ r.encode = function(a) {
   }
   this.normalize && (a = "function" === typeof this.normalize ? this.normalize(a) : D ? a.normalize("NFKD").replace(D, "").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 "));
+  this.numeric && 3 < a.length && (a = a.replace(A, "$1 $2").replace(B, "$1 $2").replace(z, "$1 "));
   const c = !(this.dedupe || this.mapper || this.filter || this.matcher || this.stemmer || this.replacer);
   let b = [], e = this.split || "" === this.split ? a.split(this.split) : a;
   for (let g = 0, f, h; g < e.length; g++) {
@@ -209,16 +209,16 @@ r.encode = function(a) {
       }
     }
     let k;
-    this.stemmer && 2 < f.length && (this.u || (this.u = new RegExp("(?!^)(" + this.i + ")$")), f = f.replace(this.u, l => this.stemmer.get(l)), k = 1);
+    this.stemmer && 2 < f.length && (this.u || (this.u = new RegExp("(?!^)(" + this.i + ")$")), f = f.replace(this.u, r => this.stemmer.get(r)), k = 1);
     f && k && (f.length < this.minlength || this.filter && this.filter.has(f)) && (f = "");
     if (f && (this.mapper || this.dedupe && 1 < f.length)) {
       d = "";
-      for (let l = 0, t = "", q, n; l < f.length; l++) {
-        q = f.charAt(l), q === t && this.dedupe || ((n = this.mapper && this.mapper.get(q)) || "" === n ? n === t && this.dedupe || !(t = n) || (d += n) : d += t = q);
+      for (let r = 0, q = "", p, n; r < f.length; r++) {
+        p = f.charAt(r), p === q && this.dedupe || ((n = this.mapper && this.mapper.get(p)) || "" === n ? n === q && this.dedupe || !(q = n) || (d += n) : d += q = p);
       }
       f = d;
     }
-    this.matcher && 1 < f.length && (this.s || (this.s = new RegExp("(" + this.g + ")", "g")), f = f.replace(this.s, l => this.matcher.get(l)));
+    this.matcher && 1 < f.length && (this.s || (this.s = new RegExp("(" + this.g + ")", "g")), f = f.replace(this.s, r => this.matcher.get(r)));
     if (f && this.replacer) {
       for (d = 0; f && d < this.replacer.length; d += 2) {
         f = f.replace(this.replacer[d], this.replacer[d + 1]);
@@ -264,7 +264,7 @@ const I = {normalize:function(a) {
   return a.toLowerCase();
 }, dedupe:!1};
 const J = {memory:{resolution:1}, performance:{resolution:6, fastupdate:!0, context:{depth:1, resolution:3}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:9}}};
-x();
+w();
 K.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -272,20 +272,20 @@ K.prototype.add = function(a, c, b, e) {
     }
     c = this.encoder.encode(c);
     if (e = c.length) {
-      const l = x(), t = x(), q = this.depth, n = this.resolution;
+      const r = w(), q = w(), p = this.depth, n = this.resolution;
       for (let m = 0; m < e; m++) {
-        let p = c[this.rtl ? e - 1 - m : m];
-        var d = p.length;
-        if (d && (q || !t[p])) {
-          var g = this.score ? this.score(c, p, m, null, 0) : L(n, e, m), f = "";
+        let l = c[this.rtl ? e - 1 - m : m];
+        var d = l.length;
+        if (d && (p || !q[l])) {
+          var g = this.score ? this.score(c, l, m, null, 0) : L(n, e, m), f = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
                 for (g = 0; g < d; g++) {
                   for (var h = d; h > g; h--) {
-                    f = p.substring(g, h);
-                    var k = this.score ? this.score(c, p, m, f, g) : L(n, e, m, d, g);
-                    M(this, t, f, k, a, b);
+                    f = l.substring(g, h);
+                    var k = this.score ? this.score(c, l, m, f, g) : L(n, e, m, d, g);
+                    M(this, q, f, k, a, b);
                   }
                 }
                 break;
@@ -293,24 +293,24 @@ K.prototype.add = function(a, c, b, e) {
             case "reverse":
               if (1 < d) {
                 for (h = d - 1; 0 < h; h--) {
-                  f = p[h] + f, k = this.score ? this.score(c, p, m, f, h) : L(n, e, m, d, h), M(this, t, f, k, a, b);
+                  f = l[h] + f, k = this.score ? this.score(c, l, m, f, h) : L(n, e, m, d, h), M(this, q, f, k, a, b);
                 }
                 f = "";
               }
             case "forward":
               if (1 < d) {
                 for (h = 0; h < d; h++) {
-                  f += p[h], M(this, t, f, g, a, b);
+                  f += l[h], M(this, q, f, g, a, b);
                 }
                 break;
               }
             default:
-              if (M(this, t, p, g, a, b), q && 1 < e && m < e - 1) {
-                for (d = x(), f = this.A, g = p, h = Math.min(q + 1, e - m), d[g] = 1, k = 1; k < h; k++) {
-                  if ((p = c[this.rtl ? e - 1 - m - k : m + k]) && !d[p]) {
-                    d[p] = 1;
-                    const v = this.score ? this.score(c, g, m, p, k) : L(f + (e / 2 > f ? 0 : 1), e, m, h - 1, k - 1), w = this.bidirectional && p > g;
-                    M(this, l, w ? g : p, v, a, b, w ? p : g);
+              if (M(this, q, l, g, a, b), p && 1 < e && m < e - 1) {
+                for (d = w(), f = this.A, g = l, h = Math.min(p + 1, e - m), d[g] = 1, k = 1; k < h; k++) {
+                  if ((l = c[this.rtl ? e - 1 - m - k : m + k]) && !d[l]) {
+                    d[l] = 1;
+                    const v = this.score ? this.score(c, g, m, l, k) : L(f + (e / 2 > f ? 0 : 1), e, m, h - 1, k - 1), C = this.bidirectional && l > g;
+                    M(this, r, C ? g : l, v, a, b, C ? l : g);
                   }
                 }
               }
@@ -325,7 +325,7 @@ K.prototype.add = function(a, c, b, e) {
 function M(a, c, b, e, d, g, f) {
   let h = f ? a.ctx : a.map, k;
   if (!c[b] || f && !(k = c[b])[f]) {
-    f ? (c = k || (c[b] = x()), c[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : c[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[e] || (h[e] = []), g && h.includes(d) || (h.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(h) : a.reg.set(d, [h])));
+    f ? (c = k || (c[b] = w()), c[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : c[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[e] || (h[e] = []), g && h.includes(d) || (h.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(h) : a.reg.set(d, [h])));
   }
 }
 function L(a, c, b, e, d) {
@@ -375,65 +375,66 @@ function L(a, c, b, e, d) {
   } else {
     h = !0;
   }
-  var l = this.encoder.encode(a);
-  b = l.length;
+  b = this.encoder.encode(a);
+  a = b.length;
   c || !h || (c = 100);
-  if (1 === b) {
-    return O.call(this, l[0], "", c, d);
+  if (1 === a) {
+    return O.call(this, b[0], "", c, d);
   }
   g = this.depth && !1 !== g;
-  if (2 === b && g && !f) {
-    return O.call(this, l[0], l[1], c, d);
+  if (2 === a && g && !f) {
+    return O.call(this, b[0], b[1], c, d);
   }
-  let t = h = 0;
-  if (1 < b) {
-    const n = x(), m = [];
-    for (let p = 0, v; p < b; p++) {
-      if ((v = l[p]) && !n[v]) {
-        if (f || P(this, v)) {
-          m.push(v), n[v] = 1;
+  var r = h = 0;
+  if (1 < a) {
+    var q = w();
+    const n = [];
+    for (let m = 0, l; m < a; m++) {
+      if ((l = b[m]) && !q[l]) {
+        if (f || P(this, l)) {
+          n.push(l), q[l] = 1;
         } else {
           return e;
         }
-        const w = v.length;
-        h = Math.max(h, w);
-        t = t ? Math.min(t, w) : w;
+        const v = l.length;
+        h = Math.max(h, v);
+        r = r ? Math.min(r, v) : v;
       }
     }
-    l = m;
-    b = a.length;
+    b = n;
+    a = b.length;
   }
-  if (!b) {
+  if (!a) {
     return e;
   }
-  a = 0;
-  if (1 === b) {
-    return O.call(this, l[0], "", c, d);
+  q = 0;
+  if (1 === a) {
+    return O.call(this, b[0], "", c, d);
   }
-  if (2 === b && g && !f) {
-    return O.call(this, l[0], l[1], c, d);
+  if (2 === a && g && !f) {
+    return O.call(this, b[0], b[1], c, d);
   }
-  if (1 < b) {
+  if (1 < a) {
     if (g) {
-      var q = l[0];
-      a = 1;
+      var p = b[0];
+      q = 1;
     } else {
-      9 < h && 3 < h / t && l.sort(y);
+      9 < h && 3 < h / r && b.sort(x);
     }
   }
   k || 0 === k || (k = this.resolution);
-  for (let n, m; a < b; a++) {
-    m = l[a];
-    q ? (n = P(this, m, q), n = Q(n, e, f, this.A), f && !1 === n && e.length || (q = m)) : (n = P(this, m, ""), n = Q(n, e, f, k));
+  for (let n, m; q < a; q++) {
+    m = b[q];
+    p ? (n = P(this, m, p), n = Q(n, e, f, this.A), f && !1 === n && e.length || (p = m)) : (n = P(this, m, ""), n = Q(n, e, f, k));
     if (n) {
       return n;
     }
-    if (f && a === b - 1) {
+    if (f && q === a - 1) {
       g = e.length;
       if (!g) {
-        if (q) {
-          q = "";
-          a = -1;
+        if (p) {
+          p = "";
+          q = -1;
           continue;
         }
         return e;
@@ -444,30 +445,30 @@ function L(a, c, b, e, d) {
     }
   }
   a: {
-    q = f;
-    b = e.length;
+    p = f;
+    g = e.length;
     f = [];
-    g = x();
-    for (let n = 0, m, p, v, w; n < k; n++) {
-      for (a = 0; a < b; a++) {
-        if (v = e[a], n < v.length && (m = v[n])) {
-          for (h = 0; h < m.length; h++) {
-            p = m[h], (l = g[p]) ? g[p]++ : (l = 0, g[p] = 1), w = f[l] || (f[l] = []), w.push(p);
+    a = w();
+    for (let n = 0, m, l, v, C; n < k; n++) {
+      for (h = 0; h < g; h++) {
+        if (v = e[h], n < v.length && (m = v[n])) {
+          for (r = 0; r < m.length; r++) {
+            l = m[r], (b = a[l]) ? a[l]++ : (b = 0, a[l] = 1), C = f[b] || (f[b] = []), C.push(l);
           }
         }
       }
     }
     if (k = f.length) {
-      if (q) {
+      if (p) {
         if (1 < f.length) {
           b: {
-            for (k = [], e = x(), q = f.length, l = q - 1; 0 <= l; l--) {
-              for (q = f[l], g = q.length, a = 0; a < g; a++) {
-                if (b = q[a], !e[b]) {
-                  if (e[b] = 1, d) {
+            for (k = [], e = w(), p = f.length, b = p - 1; 0 <= b; b--) {
+              for (p = f[b], a = p.length, h = 0; h < a; h++) {
+                if (g = p[h], !e[g]) {
+                  if (e[g] = 1, d) {
                     d--;
                   } else {
-                    if (k.push(b), k.length === c) {
+                    if (k.push(g), k.length === c) {
                       break b;
                     }
                   }
@@ -480,7 +481,7 @@ function L(a, c, b, e, d) {
         }
         f = k;
       } else {
-        if (k < b) {
+        if (k < g) {
           e = [];
           break a;
         }
@@ -589,21 +590,21 @@ function R(a, c) {
   this.rtl = d.rtl || a.rtl || !1;
   this.cache = (b = a.cache || null) && new H(b);
 }
-r = K.prototype;
-r.clear = function() {
+t = K.prototype;
+t.clear = function() {
   this.map.clear();
   this.ctx.clear();
   this.reg.clear();
   this.cache && this.cache.clear();
   return this;
 };
-r.append = function(a, c) {
+t.append = function(a, c) {
   return this.add(a, c, !0);
 };
-r.contain = function(a) {
+t.contain = function(a) {
   return this.reg.has(a);
 };
-r.update = function(a, c) {
+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);
 };
@@ -621,7 +622,7 @@ function S(a) {
   }
   return c;
 }
-r.cleanup = function() {
+t.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
@@ -629,8 +630,9 @@ r.cleanup = function() {
   this.depth && S(this.ctx);
   return this;
 };
-r.searchCache = function(a, c, b) {
+t.searchCache = function(a, c, b) {
   a = ("object" === typeof a ? "" + a.query : a).toLowerCase();
+  this.cache || (this.cache = new H());
   let e = this.cache.get(a);
   if (!e) {
     e = this.search(a, c, b);
diff --git a/dist/flexsearch.light.module.min.js b/dist/flexsearch.light.module.min.js
index c3e719d..bb8cdc4 100644
--- a/dist/flexsearch.light.module.min.js
+++ b/dist/flexsearch.light.module.min.js
@@ -1,28 +1,29 @@
 /**!
- * FlexSearch.js v0.8.102 (Bundle)
+ * FlexSearch.js v0.8.103 (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,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 g=new Map(b);for(var f of a)g.set(f[0],f[1]);return g}if(c===Set){f=new Set(b);for(g of a.values())f.add(g);return f}}}return a}return b}return"undefined"===d?c:a}function x(){return Object.create(null)}function y(a,c){return c.length-a.length};const z=/[^\p{L}\p{N}]+/u,A=/(\d{3})/g,B=/(\D)(\d{3})/g,C=/(\d{3})(\D)/g,D="".normalize&&/[\u0300-\u036f]/g;function E(a){if(!this||this.constructor!==E)return new E(...arguments);for(let c=0;c<arguments.length;c++)this.assign(arguments[c])}r=E.prototype;
-r.assign=function(a){this.normalize=u(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split;if("object"===typeof b){let e=!c,d="";a.include||(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(g){this.split=/\s+/}this.numeric=e}else{try{this.split=u(b,z,this.split)}catch(e){this.split=
+var t;function u(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 g=new Map(b);for(var f of a)g.set(f[0],f[1]);return g}if(c===Set){f=new Set(b);for(g of a.values())f.add(g);return f}}}return a}return b}return"undefined"===d?c:a}function w(){return Object.create(null)}function x(a,c){return c.length-a.length};const y=/[^\p{L}\p{N}]+/u,z=/(\d{3})/g,A=/(\D)(\d{3})/g,B=/(\d{3})(\D)/g,D="".normalize&&/[\u0300-\u036f]/g;function E(a){if(!this||this.constructor!==E)return new E(...arguments);for(let c=0;c<arguments.length;c++)this.assign(arguments[c])}t=E.prototype;
+t.assign=function(a){this.normalize=u(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split;if("object"===typeof b){let e=!c,d="";a.include||(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(g){this.split=/\s+/}this.numeric=e}else{try{this.split=u(b,y,this.split)}catch(e){this.split=
 /\s+/}this.numeric=u(this.numeric,!0)}this.prepare=u(a.prepare,null,this.prepare);this.finalize=u(a.finalize,null,this.finalize);this.rtl=a.rtl||!1;this.dedupe=u(a.dedupe,!1,this.dedupe);this.filter=u((b=a.filter)&&new Set(b),null,this.filter);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);if(this.cache=b=u(a.cache,!0,this.cache))this.l=null,this.v="number"===typeof b?b:2E5,this.h=new Map,this.j=new Map,this.o=this.m=128;this.g="";this.s=null;this.i="";this.u=null;if(this.matcher)for(const e of this.matcher.keys())this.g+=(this.g?"|":"")+e;if(this.stemmer)for(const e of this.stemmer.keys())this.i+=(this.i?"|":"")+e;return this};
-r.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length)return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.g+=(this.g?"|":"")+a;this.s=null;this.cache&&F(this);return this};r.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.i+=(this.i?"|":"")+a;this.u=null;this.cache&&F(this);return this};
-r.addFilter=function(a){this.filter||(this.filter=new Set);this.filter.add(a);this.cache&&F(this);return this};r.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&&F(this);return this};r.addReplacer=function(a,c){"string"===typeof a&&(a=new RegExp(a,"g"));this.replacer||(this.replacer=[]);this.replacer.push(a,c||"");this.cache&&F(this);return this};
+t.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length)return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.g+=(this.g?"|":"")+a;this.s=null;this.cache&&F(this);return this};t.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.i+=(this.i?"|":"")+a;this.u=null;this.cache&&F(this);return this};
+t.addFilter=function(a){this.filter||(this.filter=new Set);this.filter.add(a);this.cache&&F(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&&F(this);return this};t.addReplacer=function(a,c){"string"===typeof a&&(a=new RegExp(a,"g"));this.replacer||(this.replacer=[]);this.replacer.push(a,c||"");this.cache&&F(this);return this};
 function F(a){a.h.clear();a.j.clear()}
-r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.h.has(a))return this.h.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&(a="function"===typeof this.normalize?this.normalize(a):D?a.normalize("NFKD").replace(D,"").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,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],e=this.split||
-""===this.split?a.split(this.split):a;for(let g=0,f,h;g<e.length;g++){if(!(f=h=e[g]))continue;if(f.length<this.minlength)continue;if(c){b.push(f);continue}if(this.filter&&this.filter.has(f))continue;if(this.cache&&f.length<=this.o)if(this.l){var d=this.j.get(f);if(d||""===d){d&&b.push(d);continue}}else this.l=setTimeout(G,50,this);let k;this.stemmer&&2<f.length&&(this.u||(this.u=new RegExp("(?!^)("+this.i+")$")),f=f.replace(this.u,l=>this.stemmer.get(l)),k=1);f&&k&&(f.length<this.minlength||this.filter&&
-this.filter.has(f))&&(f="");if(f&&(this.mapper||this.dedupe&&1<f.length)){d="";for(let l=0,t="",q,n;l<f.length;l++)q=f.charAt(l),q===t&&this.dedupe||((n=this.mapper&&this.mapper.get(q))||""===n?n===t&&this.dedupe||!(t=n)||(d+=n):d+=t=q);f=d}this.matcher&&1<f.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),f=f.replace(this.s,l=>this.matcher.get(l)));if(f&&this.replacer)for(d=0;f&&d<this.replacer.length;d+=2)f=f.replace(this.replacer[d],this.replacer[d+1]);this.cache&&h.length<=this.o&&(this.j.set(h,
+t.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.h.has(a))return this.h.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&(a="function"===typeof this.normalize?this.normalize(a):D?a.normalize("NFKD").replace(D,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(A,"$1 $2").replace(B,"$1 $2").replace(z,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],e=this.split||
+""===this.split?a.split(this.split):a;for(let g=0,f,h;g<e.length;g++){if(!(f=h=e[g]))continue;if(f.length<this.minlength)continue;if(c){b.push(f);continue}if(this.filter&&this.filter.has(f))continue;if(this.cache&&f.length<=this.o)if(this.l){var d=this.j.get(f);if(d||""===d){d&&b.push(d);continue}}else this.l=setTimeout(G,50,this);let k;this.stemmer&&2<f.length&&(this.u||(this.u=new RegExp("(?!^)("+this.i+")$")),f=f.replace(this.u,r=>this.stemmer.get(r)),k=1);f&&k&&(f.length<this.minlength||this.filter&&
+this.filter.has(f))&&(f="");if(f&&(this.mapper||this.dedupe&&1<f.length)){d="";for(let r=0,q="",p,n;r<f.length;r++)p=f.charAt(r),p===q&&this.dedupe||((n=this.mapper&&this.mapper.get(p))||""===n?n===q&&this.dedupe||!(q=n)||(d+=n):d+=q=p);f=d}this.matcher&&1<f.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),f=f.replace(this.s,r=>this.matcher.get(r)));if(f&&this.replacer)for(d=0;f&&d<this.replacer.length;d+=2)f=f.replace(this.replacer[d],this.replacer[d+1]);this.cache&&h.length<=this.o&&(this.j.set(h,
 f),this.j.size>this.v&&(this.j.clear(),this.o=this.o/1.1|0));f&&b.push(f)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.h.set(a,b),this.h.size>this.v&&(this.h.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.h.clear();a.j.clear()};function H(a){this.limit=a&&!0!==a?a:1E3;this.cache=new Map;this.g=""}H.prototype.set=function(a,c){this.cache.set(this.g=a,c);this.cache.size>this.limit&&this.cache.delete(this.cache.keys().next().value)};H.prototype.get=function(a){const c=this.cache.get(a);c&&this.g!==a&&(this.cache.delete(a),this.cache.set(this.g=a,c));return c};H.prototype.remove=function(a){for(const c of this.cache){const b=c[0];c[1].includes(a)&&this.cache.delete(b)}};
-H.prototype.clear=function(){this.cache.clear();this.g=""};const I={normalize:function(a){return a.toLowerCase()},dedupe:!1};const J={memory:{resolution:1},performance:{resolution:6,fastupdate:!0,context:{depth:1,resolution:3}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:9}}};x();K.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=x(),t=x(),q=this.depth,n=this.resolution;for(let m=0;m<e;m++){let p=c[this.rtl?e-1-m:m];var d=p.length;if(d&&(q||!t[p])){var g=this.score?this.score(c,p,m,null,0):L(n,e,m),f="";switch(this.tokenize){case "full":if(2<d){for(g=0;g<d;g++)for(var h=d;h>g;h--){f=p.substring(g,h);var k=this.score?this.score(c,p,m,f,g):L(n,e,m,d,g);M(this,t,f,k,a,b)}break}case "reverse":if(1<
-d){for(h=d-1;0<h;h--)f=p[h]+f,k=this.score?this.score(c,p,m,f,h):L(n,e,m,d,h),M(this,t,f,k,a,b);f=""}case "forward":if(1<d){for(h=0;h<d;h++)f+=p[h],M(this,t,f,g,a,b);break}default:if(M(this,t,p,g,a,b),q&&1<e&&m<e-1)for(d=x(),f=this.A,g=p,h=Math.min(q+1,e-m),d[g]=1,k=1;k<h;k++)if((p=c[this.rtl?e-1-m-k:m+k])&&!d[p]){d[p]=1;const v=this.score?this.score(c,g,m,p,k):L(f+(e/2>f?0:1),e,m,h-1,k-1),w=this.bidirectional&&p>g;M(this,l,w?g:p,v,a,b,w?p:g)}}}}this.fastupdate||this.reg.add(a)}}return this};
-function M(a,c,b,e,d,g,f){let h=f?a.ctx:a.map,k;if(!c[b]||f&&!(k=c[b])[f])f?(c=k||(c[b]=x()),c[f]=1,(k=h.get(f))?h=k:h.set(f,h=new Map)):c[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[e]||(h[e]=[]),g&&h.includes(d)||(h.push(d),a.fastupdate&&((c=a.reg.get(d))?c.push(h):a.reg.set(d,[h])))}function L(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};function N(a,c,b){if(1===a.length)return a=a[0],a=b||a.length>c?c?a.slice(b,b+c):a.slice(b):a;let e=[];for(let d=0,g,f;d<a.length;d++)if((g=a[d])&&(f=g.length)){if(b){if(b>=f){b-=f;continue}b<f&&(g=c?g.slice(b,b+c):g.slice(b),f=g.length,b=0)}if(e.length)f>c&&(g=g.slice(0,c),f=g.length);else if(f>=c)return f>c&&(g=g.slice(0,c)),g;e.push(g);c-=f;if(!c)break}return e.length?e=1<e.length?[].concat.apply([],e):e[0]:e};K.prototype.search=function(a,c,b){b||(c||"object"!==typeof a?"object"===typeof c&&(b=c,c=0):(b=a,a=""));var e=[],d=0;if(b){a=b.query||a;c=b.limit||c;d=b.offset||0;var g=b.context;var f=b.suggest;var h=!0;var k=b.resolution}else h=!0;var l=this.encoder.encode(a);b=l.length;c||!h||(c=100);if(1===b)return O.call(this,l[0],"",c,d);g=this.depth&&!1!==g;if(2===b&&g&&!f)return O.call(this,l[0],l[1],c,d);let t=h=0;if(1<b){const n=x(),m=[];for(let p=0,v;p<b;p++)if((v=l[p])&&!n[v]){if(f||P(this,v))m.push(v),
-n[v]=1;else return e;const w=v.length;h=Math.max(h,w);t=t?Math.min(t,w):w}l=m;b=a.length}if(!b)return e;a=0;if(1===b)return O.call(this,l[0],"",c,d);if(2===b&&g&&!f)return O.call(this,l[0],l[1],c,d);if(1<b)if(g){var q=l[0];a=1}else 9<h&&3<h/t&&l.sort(y);k||0===k||(k=this.resolution);for(let n,m;a<b;a++){m=l[a];q?(n=P(this,m,q),n=Q(n,e,f,this.A),f&&!1===n&&e.length||(q=m)):(n=P(this,m,""),n=Q(n,e,f,k));if(n)return n;if(f&&a===b-1){g=e.length;if(!g){if(q){q="";a=-1;continue}return e}if(1===g)return N(e[0],
-c,d)}}a:{q=f;b=e.length;f=[];g=x();for(let n=0,m,p,v,w;n<k;n++)for(a=0;a<b;a++)if(v=e[a],n<v.length&&(m=v[n]))for(h=0;h<m.length;h++)p=m[h],(l=g[p])?g[p]++:(l=0,g[p]=1),w=f[l]||(f[l]=[]),w.push(p);if(k=f.length)if(q){if(1<f.length)b:for(k=[],e=x(),q=f.length,l=q-1;0<=l;l--)for(q=f[l],g=q.length,a=0;a<g;a++){if(b=q[a],!e[b])if(e[b]=1,d)d--;else if(k.push(b),k.length===c)break b}else k=(f=f[0]).length>c||d?f.slice(d,c+d):f;f=k}else{if(k<b){e=[];break a}f=f[k-1];if(c||d)if(f.length>c||d)f=f.slice(d,
+H.prototype.clear=function(){this.cache.clear();this.g=""};const I={normalize:function(a){return a.toLowerCase()},dedupe:!1};const J={memory:{resolution:1},performance:{resolution:6,fastupdate:!0,context:{depth:1,resolution:3}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:9}}};w();K.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 r=w(),q=w(),p=this.depth,n=this.resolution;for(let m=0;m<e;m++){let l=c[this.rtl?e-1-m:m];var d=l.length;if(d&&(p||!q[l])){var g=this.score?this.score(c,l,m,null,0):L(n,e,m),f="";switch(this.tokenize){case "full":if(2<d){for(g=0;g<d;g++)for(var h=d;h>g;h--){f=l.substring(g,h);var k=this.score?this.score(c,l,m,f,g):L(n,e,m,d,g);M(this,q,f,k,a,b)}break}case "reverse":if(1<
+d){for(h=d-1;0<h;h--)f=l[h]+f,k=this.score?this.score(c,l,m,f,h):L(n,e,m,d,h),M(this,q,f,k,a,b);f=""}case "forward":if(1<d){for(h=0;h<d;h++)f+=l[h],M(this,q,f,g,a,b);break}default:if(M(this,q,l,g,a,b),p&&1<e&&m<e-1)for(d=w(),f=this.A,g=l,h=Math.min(p+1,e-m),d[g]=1,k=1;k<h;k++)if((l=c[this.rtl?e-1-m-k:m+k])&&!d[l]){d[l]=1;const v=this.score?this.score(c,g,m,l,k):L(f+(e/2>f?0:1),e,m,h-1,k-1),C=this.bidirectional&&l>g;M(this,r,C?g:l,v,a,b,C?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};
+function M(a,c,b,e,d,g,f){let h=f?a.ctx:a.map,k;if(!c[b]||f&&!(k=c[b])[f])f?(c=k||(c[b]=w()),c[f]=1,(k=h.get(f))?h=k:h.set(f,h=new Map)):c[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[e]||(h[e]=[]),g&&h.includes(d)||(h.push(d),a.fastupdate&&((c=a.reg.get(d))?c.push(h):a.reg.set(d,[h])))}function L(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};function N(a,c,b){if(1===a.length)return a=a[0],a=b||a.length>c?c?a.slice(b,b+c):a.slice(b):a;let e=[];for(let d=0,g,f;d<a.length;d++)if((g=a[d])&&(f=g.length)){if(b){if(b>=f){b-=f;continue}b<f&&(g=c?g.slice(b,b+c):g.slice(b),f=g.length,b=0)}if(e.length)f>c&&(g=g.slice(0,c),f=g.length);else if(f>=c)return f>c&&(g=g.slice(0,c)),g;e.push(g);c-=f;if(!c)break}return e.length?e=1<e.length?[].concat.apply([],e):e[0]:e};K.prototype.search=function(a,c,b){b||(c||"object"!==typeof a?"object"===typeof c&&(b=c,c=0):(b=a,a=""));var e=[],d=0;if(b){a=b.query||a;c=b.limit||c;d=b.offset||0;var g=b.context;var f=b.suggest;var h=!0;var k=b.resolution}else h=!0;b=this.encoder.encode(a);a=b.length;c||!h||(c=100);if(1===a)return O.call(this,b[0],"",c,d);g=this.depth&&!1!==g;if(2===a&&g&&!f)return O.call(this,b[0],b[1],c,d);var r=h=0;if(1<a){var q=w();const n=[];for(let m=0,l;m<a;m++)if((l=b[m])&&!q[l]){if(f||P(this,l))n.push(l),
+q[l]=1;else return e;const v=l.length;h=Math.max(h,v);r=r?Math.min(r,v):v}b=n;a=b.length}if(!a)return e;q=0;if(1===a)return O.call(this,b[0],"",c,d);if(2===a&&g&&!f)return O.call(this,b[0],b[1],c,d);if(1<a)if(g){var p=b[0];q=1}else 9<h&&3<h/r&&b.sort(x);k||0===k||(k=this.resolution);for(let n,m;q<a;q++){m=b[q];p?(n=P(this,m,p),n=Q(n,e,f,this.A),f&&!1===n&&e.length||(p=m)):(n=P(this,m,""),n=Q(n,e,f,k));if(n)return n;if(f&&q===a-1){g=e.length;if(!g){if(p){p="";q=-1;continue}return e}if(1===g)return N(e[0],
+c,d)}}a:{p=f;g=e.length;f=[];a=w();for(let n=0,m,l,v,C;n<k;n++)for(h=0;h<g;h++)if(v=e[h],n<v.length&&(m=v[n]))for(r=0;r<m.length;r++)l=m[r],(b=a[l])?a[l]++:(b=0,a[l]=1),C=f[b]||(f[b]=[]),C.push(l);if(k=f.length)if(p){if(1<f.length)b:for(k=[],e=w(),p=f.length,b=p-1;0<=b;b--)for(p=f[b],a=p.length,h=0;h<a;h++){if(g=p[h],!e[g])if(e[g]=1,d)d--;else if(k.push(g),k.length===c)break b}else k=(f=f[0]).length>c||d?f.slice(d,c+d):f;f=k}else{if(k<g){e=[];break a}f=f[k-1];if(c||d)if(f.length>c||d)f=f.slice(d,
 c+d)}e=f}return e};function O(a,c,b,e){return(a=P(this,a,c))&&a.length?N(a,b,e):[]}function Q(a,c,b,e){let d=[];if(a){e=Math.min(a.length,e);for(let g=0,f;g<e;g++)(f=a[g])&&f&&(d[g]=f);if(d.length){c.push(d);return}}return!b&&d}function P(a,c,b){let e;b&&(e=a.bidirectional&&c>b);a=b?(a=a.ctx.get(e?c:b))&&a.get(e?b:c):a.map.get(c);return a};K.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 g=d.indexOf(a);g===b.length-1?d.pop():d.splice(g,1)}}else R(this.map,a),this.depth&&R(this.ctx,a);c||this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
 function R(a,c){let b=0;if(a.constructor===Array)for(let e=0,d,g;e<a.length;e++){if((d=a[e])&&d.length)if(g=d.indexOf(c),0<=g){1<d.length?(d.splice(g,1),b++):delete a[e];break}else b++}else for(let e of a){const d=e[0],g=R(e[1],c);g?b+=g:a.delete(d)}return b};function K(a,c){if(!this||this.constructor!==K)return new K(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},J[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=a.encode||a.encoder||I;this.encoder=d.encode?d:"object"===typeof d?new E(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=a.tokenize||"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.A=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new H(b)}r=K.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};r.append=function(a,c){return this.add(a,c,!0)};r.contain=function(a){return this.reg.has(a)};r.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 S(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){const e=b[0],d=S(b[1]);d?c+=d:a.delete(e)}return c}r.cleanup=function(){if(!this.fastupdate)return this;S(this.map);this.depth&&S(this.ctx);return this};r.searchCache=function(a,c,b){a=("object"===typeof a?""+a.query:a).toLowerCase();let e=this.cache.get(a);if(!e){e=this.search(a,c,b);if(e.then){const d=this;e.then(function(g){d.cache.set(a,g);return g})}this.cache.set(a,e)}return e};export default {Index:K,Charset:null,Encoder:E,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
+this.ctx=new Map;this.reg=c||(this.fastupdate?new Map:new Set);this.A=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new H(b)}t=K.prototype;t.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();return this};t.append=function(a,c){return this.add(a,c,!0)};t.contain=function(a){return 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 S(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){const e=b[0],d=S(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;S(this.map);this.depth&&S(this.ctx);return this};
+t.searchCache=function(a,c,b){a=("object"===typeof a?""+a.query:a).toLowerCase();this.cache||(this.cache=new H);let e=this.cache.get(a);if(!e){e=this.search(a,c,b);if(e.then){const d=this;e.then(function(g){d.cache.set(a,g);return g})}this.cache.set(a,e)}return e};export default {Index:K,Charset:null,Encoder:E,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
 export const Index=K;export const Charset=null;export const Encoder=E;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/cache.js b/dist/module-debug/cache.js
index 07aeeb0..b62977a 100644
--- a/dist/module-debug/cache.js
+++ b/dist/module-debug/cache.js
@@ -14,6 +14,10 @@ export function searchCache(query, limit, options) {
 
     query = ("object" == typeof query ? "" + query.query : "" + query).toLowerCase();
 
+    if (!this.cache) {
+        this.cache = new CacheClass();
+    }
+
     //let encoded = this.encoder.encode(query).join(" ");
     let cache = this.cache.get(query);
     if (!cache) {
@@ -44,6 +48,11 @@ export default function CacheClass(limit) {
     this.last = "";
 }
 
+/**
+ * @param {string} key
+ * @param value
+ */
+
 CacheClass.prototype.set = function (key, value) {
     //if(!this.cache.has(key)){
     this.cache.set(this.last = key, value);
@@ -53,6 +62,10 @@ CacheClass.prototype.set = function (key, value) {
     //}
 };
 
+/**
+ * @param {string} key
+ */
+
 CacheClass.prototype.get = function (key) {
     const cache = this.cache.get(key);
     if (cache && this.last !== key) {
@@ -62,6 +75,10 @@ CacheClass.prototype.get = function (key) {
     return cache;
 };
 
+/**
+ * @param {string|number} id
+ */
+
 CacheClass.prototype.remove = function (id) {
     for (const item of this.cache) {
         const key = item[0],
diff --git a/dist/module-debug/index/search.js b/dist/module-debug/index/search.js
index e459b19..895297d 100644
--- a/dist/module-debug/index/search.js
+++ b/dist/module-debug/index/search.js
@@ -136,7 +136,7 @@ Index.prototype.search = function (query, limit, options) {
         }
 
         query_terms = query_new;
-        length = query.length;
+        length = query_terms.length;
     }
 
     // the term length could be changed after deduplication
diff --git a/dist/module-min/cache.js b/dist/module-min/cache.js
index 4654995..83746a8 100644
--- a/dist/module-min/cache.js
+++ b/dist/module-min/cache.js
@@ -1 +1 @@
-import Index from"./index.js";import Document from"./document.js";import{SearchOptions,DocumentSearchOptions}from"./type.js";export function searchCache(a,b,c){a=("object"==typeof a?""+a.query:""+a).toLowerCase();let d=this.cache.get(a);if(!d){if(d=this.search(a,b,c),d.then){const b=this;d.then(function(c){return b.cache.set(a,c),c})}this.cache.set(a,d)}return d}export default function CacheClass(a){this.limit=a&&!0!==a?a:1000,this.cache=new Map,this.last=""}CacheClass.prototype.set=function(a,b){this.cache.set(this.last=a,b),this.cache.size>this.limit&&this.cache.delete(this.cache.keys().next().value)},CacheClass.prototype.get=function(a){const b=this.cache.get(a);return b&&this.last!==a&&(this.cache.delete(a),this.cache.set(this.last=a,b)),b},CacheClass.prototype.remove=function(a){for(const b of this.cache){const c=b[0],d=b[1];d.includes(a)&&this.cache.delete(c)}},CacheClass.prototype.clear=function(){this.cache.clear(),this.last=""};
\ No newline at end of file
+import Index from"./index.js";import Document from"./document.js";import{SearchOptions,DocumentSearchOptions}from"./type.js";export function searchCache(a,b,c){a=("object"==typeof a?""+a.query:""+a).toLowerCase(),this.cache||(this.cache=new CacheClass);let d=this.cache.get(a);if(!d){if(d=this.search(a,b,c),d.then){const b=this;d.then(function(c){return b.cache.set(a,c),c})}this.cache.set(a,d)}return d}export default function CacheClass(a){this.limit=a&&!0!==a?a:1000,this.cache=new Map,this.last=""}CacheClass.prototype.set=function(a,b){this.cache.set(this.last=a,b),this.cache.size>this.limit&&this.cache.delete(this.cache.keys().next().value)},CacheClass.prototype.get=function(a){const b=this.cache.get(a);return b&&this.last!==a&&(this.cache.delete(a),this.cache.set(this.last=a,b)),b},CacheClass.prototype.remove=function(a){for(const b of this.cache){const c=b[0],d=b[1];d.includes(a)&&this.cache.delete(c)}},CacheClass.prototype.clear=function(){this.cache.clear(),this.last=""};
\ No newline at end of file
diff --git a/dist/module-min/index/search.js b/dist/module-min/index/search.js
index c759e3f..5018a90 100644
--- a/dist/module-min/index/search.js
+++ b/dist/module-min/index/search.js
@@ -1 +1 @@
-import{SearchOptions,SearchResults,EnrichedSearchResults}from"../type.js";import{create_object,is_object,sort_by_length_down}from"../common.js";import Index from"../index.js";import default_compress from"../compress.js";import Resolver from"../resolver.js";import{intersect}from"../intersect.js";import resolve_default from"../resolve/default.js";let global_resolve=1;export function set_resolve(a){global_resolve=a}Index.prototype.search=function(a,b,c){c||(!b&&is_object(a)?(c=a,a=""):is_object(b)&&(c=b,b=0));let d,e,f,g,h,i,j,k,l=[],m=0;c?(a=c.query||a,b=c.limit||b,m=c.offset||0,e=c.context,f=c.suggest,g=global_resolve&&!1!==c.resolve,g||(global_resolve=0),h=g&&c.enrich,j=c.boost,k=c.resolution,i=this.db&&c.tag):g=this.resolve||global_resolve;let n=this.encoder.encode(a);if(d=n.length,b||!g||(b=100),1===d)return single_term_query.call(this,n[0],"",b,m,g,h,i);if(e=this.depth&&!1!==e,2===d&&e&&!f)return single_term_query.call(this,n[0],n[1],b,m,g,h,i);let o=0,p=0;if(1<d){const b=create_object(),c=[];for(let a,e=0;e<d;e++)if(a=n[e],a&&!b[a]){if(!f&&!this.db&&!this.get_array(a))return g?l:new Resolver(l);c.push(a),b[a]=1;const d=a.length;o=Math.max(o,d),p=p?Math.min(p,d):d}n=c,d=a.length}if(!d)return g?l:new Resolver(l);let q,r=0;if(1===d)return single_term_query.call(this,n[0],"",b,m,g,h,i);if(2===d&&e&&!f)return single_term_query.call(this,n[0],n[1],b,m,g,h,i);if(1<d&&(e?(q=n[0],r=1):9<o&&3<o/p&&n.sort(sort_by_length_down)),k||0===k||(k=this.resolution),this.db){if(this.db.search){const a=this.db.search(this,n,b,m,f,g,h,i);if(!1!==a)return a}const a=this;return async function(){for(let c,e;r<d;r++){if(e=n[r],q?(c=await a.get_array(e,q,0,0,!1,!1),c=add_result(c,l,f,a.resolution_ctx),(!f||!1!==c||!l.length)&&(q=e)):(c=await a.get_array(e,"",0,0,!1,!1),c=add_result(c,l,f,k)),c)return c;if(f&&r==d-1){let a=l.length;if(!a){if(q){q="",r=-1;continue}return l}if(1===a)return g?resolve_default(l[0],b,m):new Resolver(l[0])}}return g?intersect(l,k,b,m,f,j,g):new Resolver(l[0])}()}for(let e,h;r<d;r++){if(h=n[r],q?(e=this.get_array(h,q,0,0,!1,!1),e=add_result(e,l,f,this.resolution_ctx),(!f||!1!==e||!l.length)&&(q=h)):(e=this.get_array(h,"",0,0,!1,!1),e=add_result(e,l,f,k)),e)return e;if(f&&r==d-1){const a=l.length;if(!a){if(q){q="",r=-1;continue}return l}if(1===a)return g?resolve_default(l[0],b,m):new Resolver(l[0])}}return l=intersect(l,k,b,m,f,j,g),g?l:new Resolver(l)};function single_term_query(a,b,c,d,e,f,g){const h=this.get_array(a,b,c,d,e,f,g);return this.db?h.then(function(a){return e?a:a&&a.length?e?resolve_default(a,c,d):new Resolver(a):e?[]:new Resolver([])}):h&&h.length?e?resolve_default(h,c,d):new Resolver(h):e?[]:new Resolver([])}function add_result(a,b,c,d){let e=[];if(a){d=Math.min(a.length,d);for(let b,c=0;c<d;c++)(b=a[c])&&b&&(e[c]=b);if(e.length)return void b.push(e)}return!c&&e}Index.prototype.get_array=function(a,b,c,d,e,f,g){let h,i;return(b&&(i=this.bidirectional&&a>b),this.compress&&(a=default_compress(a),b&&(b=default_compress(b))),this.db)?b?this.db.get(i?b:a,i?a:b,c,d,e,f,g):this.db.get(a,"",c,d,e,f,g):(b?(h=this.ctx.get(i?a:b),h=h&&h.get(i?b:a)):h=this.map.get(a),h)};
\ No newline at end of file
+import{SearchOptions,SearchResults,EnrichedSearchResults}from"../type.js";import{create_object,is_object,sort_by_length_down}from"../common.js";import Index from"../index.js";import default_compress from"../compress.js";import Resolver from"../resolver.js";import{intersect}from"../intersect.js";import resolve_default from"../resolve/default.js";let global_resolve=1;export function set_resolve(a){global_resolve=a}Index.prototype.search=function(a,b,c){c||(!b&&is_object(a)?(c=a,a=""):is_object(b)&&(c=b,b=0));let d,e,f,g,h,i,j,k,l=[],m=0;c?(a=c.query||a,b=c.limit||b,m=c.offset||0,e=c.context,f=c.suggest,g=global_resolve&&!1!==c.resolve,g||(global_resolve=0),h=g&&c.enrich,j=c.boost,k=c.resolution,i=this.db&&c.tag):g=this.resolve||global_resolve;let n=this.encoder.encode(a);if(d=n.length,b||!g||(b=100),1===d)return single_term_query.call(this,n[0],"",b,m,g,h,i);if(e=this.depth&&!1!==e,2===d&&e&&!f)return single_term_query.call(this,n[0],n[1],b,m,g,h,i);let o=0,p=0;if(1<d){const a=create_object(),b=[];for(let c,e=0;e<d;e++)if(c=n[e],c&&!a[c]){if(!f&&!this.db&&!this.get_array(c))return g?l:new Resolver(l);b.push(c),a[c]=1;const d=c.length;o=Math.max(o,d),p=p?Math.min(p,d):d}n=b,d=n.length}if(!d)return g?l:new Resolver(l);let q,r=0;if(1===d)return single_term_query.call(this,n[0],"",b,m,g,h,i);if(2===d&&e&&!f)return single_term_query.call(this,n[0],n[1],b,m,g,h,i);if(1<d&&(e?(q=n[0],r=1):9<o&&3<o/p&&n.sort(sort_by_length_down)),k||0===k||(k=this.resolution),this.db){if(this.db.search){const a=this.db.search(this,n,b,m,f,g,h,i);if(!1!==a)return a}const a=this;return async function(){for(let c,e;r<d;r++){if(e=n[r],q?(c=await a.get_array(e,q,0,0,!1,!1),c=add_result(c,l,f,a.resolution_ctx),(!f||!1!==c||!l.length)&&(q=e)):(c=await a.get_array(e,"",0,0,!1,!1),c=add_result(c,l,f,k)),c)return c;if(f&&r==d-1){let a=l.length;if(!a){if(q){q="",r=-1;continue}return l}if(1===a)return g?resolve_default(l[0],b,m):new Resolver(l[0])}}return g?intersect(l,k,b,m,f,j,g):new Resolver(l[0])}()}for(let e,h;r<d;r++){if(h=n[r],q?(e=this.get_array(h,q,0,0,!1,!1),e=add_result(e,l,f,this.resolution_ctx),(!f||!1!==e||!l.length)&&(q=h)):(e=this.get_array(h,"",0,0,!1,!1),e=add_result(e,l,f,k)),e)return e;if(f&&r==d-1){const a=l.length;if(!a){if(q){q="",r=-1;continue}return l}if(1===a)return g?resolve_default(l[0],b,m):new Resolver(l[0])}}return l=intersect(l,k,b,m,f,j,g),g?l:new Resolver(l)};function single_term_query(a,b,c,d,e,f,g){const h=this.get_array(a,b,c,d,e,f,g);return this.db?h.then(function(a){return e?a:a&&a.length?e?resolve_default(a,c,d):new Resolver(a):e?[]:new Resolver([])}):h&&h.length?e?resolve_default(h,c,d):new Resolver(h):e?[]:new Resolver([])}function add_result(a,b,c,d){let e=[];if(a){d=Math.min(a.length,d);for(let b,c=0;c<d;c++)(b=a[c])&&b&&(e[c]=b);if(e.length)return void b.push(e)}return!c&&e}Index.prototype.get_array=function(a,b,c,d,e,f,g){let h,i;return(b&&(i=this.bidirectional&&a>b),this.compress&&(a=default_compress(a),b&&(b=default_compress(b))),this.db)?b?this.db.get(i?b:a,i?a:b,c,d,e,f,g):this.db.get(a,"",c,d,e,f,g):(b?(h=this.ctx.get(i?a:b),h=h&&h.get(i?b:a)):h=this.map.get(a),h)};
\ No newline at end of file
diff --git a/dist/module/cache.js b/dist/module/cache.js
index 07aeeb0..b62977a 100644
--- a/dist/module/cache.js
+++ b/dist/module/cache.js
@@ -14,6 +14,10 @@ export function searchCache(query, limit, options) {
 
     query = ("object" == typeof query ? "" + query.query : "" + query).toLowerCase();
 
+    if (!this.cache) {
+        this.cache = new CacheClass();
+    }
+
     //let encoded = this.encoder.encode(query).join(" ");
     let cache = this.cache.get(query);
     if (!cache) {
@@ -44,6 +48,11 @@ export default function CacheClass(limit) {
     this.last = "";
 }
 
+/**
+ * @param {string} key
+ * @param value
+ */
+
 CacheClass.prototype.set = function (key, value) {
     //if(!this.cache.has(key)){
     this.cache.set(this.last = key, value);
@@ -53,6 +62,10 @@ CacheClass.prototype.set = function (key, value) {
     //}
 };
 
+/**
+ * @param {string} key
+ */
+
 CacheClass.prototype.get = function (key) {
     const cache = this.cache.get(key);
     if (cache && this.last !== key) {
@@ -62,6 +75,10 @@ CacheClass.prototype.get = function (key) {
     return cache;
 };
 
+/**
+ * @param {string|number} id
+ */
+
 CacheClass.prototype.remove = function (id) {
     for (const item of this.cache) {
         const key = item[0],
diff --git a/dist/module/index/search.js b/dist/module/index/search.js
index e459b19..895297d 100644
--- a/dist/module/index/search.js
+++ b/dist/module/index/search.js
@@ -136,7 +136,7 @@ Index.prototype.search = function (query, limit, options) {
         }
 
         query_terms = query_new;
-        length = query.length;
+        length = query_terms.length;
     }
 
     // the term length could be changed after deduplication
diff --git a/doc/0.8.0.md b/doc/0.8.0.md
index d5e05b4..222474f 100644
--- a/doc/0.8.0.md
+++ b/doc/0.8.0.md
@@ -1381,61 +1381,61 @@ The **_dist_** folder are located in: `node_modules/flexsearch/dist/`
     <tr>
         <td>flexsearch.bundle.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.bundle.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.bundle.module.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.module.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.bundle.module.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.bundle.module.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.es5.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.es5.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.es5.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.es5.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.es5.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.es5.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.module.debug.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.module.debug.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.debug.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.debug.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.debug.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.debug.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.module.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/0.8.0/dist/flexsearch.light.module.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.min.js</a></td>
+        <td><a href="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.min.js" target="_blank">https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
diff --git a/example/browser-legacy/basic-persistent/index.html b/example/browser-legacy/basic-persistent/index.html
index 1b8bb51..ec5e5cf 100644
--- a/example/browser-legacy/basic-persistent/index.html
+++ b/example/browser-legacy/basic-persistent/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-basic-persistent</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js"></script>
 <script>
 (async function(){
 
diff --git a/example/browser-legacy/basic-resolver/index.html b/example/browser-legacy/basic-resolver/index.html
index b642d95..634c954 100644
--- a/example/browser-legacy/basic-resolver/index.html
+++ b/example/browser-legacy/basic-resolver/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-basic-resolver</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js"></script>
 <script>
 
   // create a simple index which can store id-content-pairs
diff --git a/example/browser-legacy/basic-suggestion/index.html b/example/browser-legacy/basic-suggestion/index.html
index 7aeb838..9b5d2e0 100644
--- a/example/browser-legacy/basic-suggestion/index.html
+++ b/example/browser-legacy/basic-suggestion/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-basic-suggestion</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.min.js"></script>
 <script>
 
   // create a simple index which can store id-content-pairs
diff --git a/example/browser-legacy/basic-worker/index.html b/example/browser-legacy/basic-worker/index.html
index b1f9aeb..5f4af70 100644
--- a/example/browser-legacy/basic-worker/index.html
+++ b/example/browser-legacy/basic-worker/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-basic-worker</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js"></script>
 <script>
 (async function(){
 
diff --git a/example/browser-legacy/basic/index.html b/example/browser-legacy/basic/index.html
index 5c2a621..3ae8b2e 100644
--- a/example/browser-legacy/basic/index.html
+++ b/example/browser-legacy/basic/index.html
@@ -6,8 +6,8 @@
   <title>Example: browser-legacy-basic</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.min.js"></script>
-<script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@master/dist/flexsearch.light.min.js"></script>
+<script type="module">
 
   // create a simple index which can store id-content-pairs
   const index = new FlexSearch.Index({
diff --git a/example/browser-legacy/document-highlighting/index.html b/example/browser-legacy/document-highlighting/index.html
index 8434fa3..2c433e3 100644
--- a/example/browser-legacy/document-highlighting/index.html
+++ b/example/browser-legacy/document-highlighting/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-document-highlighting</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.compact.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.compact.min.js"></script>
 <script type="module">
 
   // some test data
diff --git a/example/browser-legacy/document-persistent/index.html b/example/browser-legacy/document-persistent/index.html
index 92ae3da..a71bbf7 100644
--- a/example/browser-legacy/document-persistent/index.html
+++ b/example/browser-legacy/document-persistent/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-document-persistent</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js"></script>
 <script>
 (async function(){
 
diff --git a/example/browser-legacy/document-worker/index.html b/example/browser-legacy/document-worker/index.html
index bc948ff..eba3e5d 100644
--- a/example/browser-legacy/document-worker/index.html
+++ b/example/browser-legacy/document-worker/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-document-worker</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.min.js"></script>
 <script>
 (async function(){
 
diff --git a/example/browser-legacy/document/index.html b/example/browser-legacy/document/index.html
index 8427727..648a92f 100644
--- a/example/browser-legacy/document/index.html
+++ b/example/browser-legacy/document/index.html
@@ -6,7 +6,7 @@
   <title>Example: browser-legacy-document</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.compact.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.compact.min.js"></script>
 <script>
 
   // some test data
diff --git a/example/browser-legacy/language-pack/index.html b/example/browser-legacy/language-pack/index.html
index 2c05bb4..0769cd7 100644
--- a/example/browser-legacy/language-pack/index.html
+++ b/example/browser-legacy/language-pack/index.html
@@ -6,9 +6,9 @@
   <title>Example: browser-legacy-language-packs</title>
 </head>
 <body style="white-space: pre">
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.compact.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.compact.min.js"></script>
 <!-- Load language pack after loading the library -->
-<script src="https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/lang/en.min.js"></script>
+<script src="https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/lang/en.min.js"></script>
 <script>
 
   const encoder = new FlexSearch.Encoder(
diff --git a/example/browser-module/basic-persistent/index.html b/example/browser-module/basic-persistent/index.html
index f60674d..407fd31 100644
--- a/example/browser-module/basic-persistent/index.html
+++ b/example/browser-module/basic-persistent/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Index, IndexedDB } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
+  import { Index, IndexedDB } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
 
   // create DB instance with namespace
   const db = new IndexedDB("my-store");
diff --git a/example/browser-module/basic-resolver/index.html b/example/browser-module/basic-resolver/index.html
index a07ef6e..25083b6 100644
--- a/example/browser-module/basic-resolver/index.html
+++ b/example/browser-module/basic-resolver/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Index, Resolver } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
+  import { Index, Resolver } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
 
   // create a simple index which can store id-content-pairs
   const index = new Index({
diff --git a/example/browser-module/basic-suggestion/index.html b/example/browser-module/basic-suggestion/index.html
index 1a29462..52597b8 100644
--- a/example/browser-module/basic-suggestion/index.html
+++ b/example/browser-module/basic-suggestion/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Index } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.min.js";
+  import { Index } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.min.js";
 
   // create a simple index which can store id-content-pairs
   const index = new Index({
diff --git a/example/browser-module/basic-worker-extern-config/config.js b/example/browser-module/basic-worker-extern-config/config.js
index 814d178..bec6b9f 100644
--- a/example/browser-module/basic-worker-extern-config/config.js
+++ b/example/browser-module/basic-worker-extern-config/config.js
@@ -1,4 +1,4 @@
-import { Encoder } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
+import { Encoder } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
 
 export default {
     tokenize: "forward",
diff --git a/example/browser-module/basic/index.html b/example/browser-module/basic/index.html
index 2eeb8af..c61ea1e 100644
--- a/example/browser-module/basic/index.html
+++ b/example/browser-module/basic/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Index } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.light.module.min.js";
+  import { Index } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.light.module.min.js";
 
   // create a simple index which can store id-content-pairs
   const index = new Index({
diff --git a/example/browser-module/document-highlighting/index.html b/example/browser-module/document-highlighting/index.html
index 8e4159d..7c52ce7 100644
--- a/example/browser-module/document-highlighting/index.html
+++ b/example/browser-module/document-highlighting/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Document, Charset } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.compact.module.min.js";
+  import { Document, Charset } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.compact.module.min.js";
 
   // some test data
   const data = [{
diff --git a/example/browser-module/document-persistent/index.html b/example/browser-module/document-persistent/index.html
index 9e45a22..b9b8999 100644
--- a/example/browser-module/document-persistent/index.html
+++ b/example/browser-module/document-persistent/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Document, Charset, IndexedDB } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
+  import { Document, Charset, IndexedDB } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
 
   // some test data
   const data = [{
diff --git a/example/browser-module/document-worker-extern-config/config.originalTitle.js b/example/browser-module/document-worker-extern-config/config.originalTitle.js
index 9d96f4f..9747eb1 100644
--- a/example/browser-module/document-worker-extern-config/config.originalTitle.js
+++ b/example/browser-module/document-worker-extern-config/config.originalTitle.js
@@ -1,5 +1,5 @@
-import { Encoder, Charset } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
-import EnglishPreset from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/module/lang/en.js";
+import { Encoder, Charset } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
+import EnglishPreset from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/module/lang/en.js";
 
 export default {
     tokenize: "forward",
diff --git a/example/browser-module/document-worker-extern-config/config.primaryTitle.js b/example/browser-module/document-worker-extern-config/config.primaryTitle.js
index 9d96f4f..9747eb1 100644
--- a/example/browser-module/document-worker-extern-config/config.primaryTitle.js
+++ b/example/browser-module/document-worker-extern-config/config.primaryTitle.js
@@ -1,5 +1,5 @@
-import { Encoder, Charset } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.bundle.module.min.js";
-import EnglishPreset from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/module/lang/en.js";
+import { Encoder, Charset } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.bundle.module.min.js";
+import EnglishPreset from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/module/lang/en.js";
 
 export default {
     tokenize: "forward",
diff --git a/example/browser-module/document/index.html b/example/browser-module/document/index.html
index bd38202..f6af16e 100644
--- a/example/browser-module/document/index.html
+++ b/example/browser-module/document/index.html
@@ -8,7 +8,7 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Document, Charset } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.compact.module.min.js";
+  import { Document, Charset } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.compact.module.min.js";
 
   // some test data
   const data = [{
diff --git a/example/browser-module/language-pack/index.html b/example/browser-module/language-pack/index.html
index 0a200bb..3b5744e 100644
--- a/example/browser-module/language-pack/index.html
+++ b/example/browser-module/language-pack/index.html
@@ -8,8 +8,8 @@
 <body style="white-space: pre">
 <script type="module">
 
-  import { Index, Encoder, Charset } from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/flexsearch.compact.module.min.js";
-  import EnglishPreset from "https://rawcdn.githack.com/nextapps-de/flexsearch/0.8.0/dist/module/lang/en.js";
+  import { Index, Encoder, Charset } from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/flexsearch.compact.module.min.js";
+  import EnglishPreset from "https://cdn.jsdelivr.net/gh/nextapps-de/flexsearch@0.8.0/dist/module/lang/en.js";
 
   const encoder = new Encoder(
     Charset.LatinSimple,
diff --git a/package-lock.json b/package-lock.json
index 15b6572..f76596f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "flexsearch",
-  "version": "0.8.102",
+  "version": "0.8.103",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "flexsearch",
-      "version": "0.8.102",
+      "version": "0.8.103",
       "funding": [
         {
           "type": "github",
diff --git a/package.json b/package.json
index 7cfc0ec..88bc089 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "public": true,
   "preferGlobal": false,
   "name": "flexsearch",
-  "version": "0.8.102",
+  "version": "0.8.103",
   "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/cache.js b/src/cache.js
index 3b222ec..9be8c08 100644
--- a/src/cache.js
+++ b/src/cache.js
@@ -17,6 +17,10 @@ export function searchCache(query, limit, options){
         : "" + query
     ).toLowerCase();
 
+    if(!this.cache){
+        this.cache = new CacheClass();
+    }
+
     //let encoded = this.encoder.encode(query).join(" ");
     let cache = this.cache.get(query);
     if(!cache){
@@ -47,6 +51,11 @@ export default function CacheClass(limit){
     this.last = "";
 }
 
+/**
+ * @param {string} key
+ * @param value
+ */
+
 CacheClass.prototype.set = function(key, value){
     //if(!this.cache.has(key)){
         this.cache.set(this.last = key, value);
@@ -56,6 +65,10 @@ CacheClass.prototype.set = function(key, value){
     //}
 };
 
+/**
+ * @param {string} key
+ */
+
 CacheClass.prototype.get = function(key){
     const cache = this.cache.get(key);
     if(cache && this.last !== key){
@@ -65,6 +78,10 @@ CacheClass.prototype.get = function(key){
     return cache;
 };
 
+/**
+ * @param {string|number} id
+ */
+
 CacheClass.prototype.remove = function(id){
     for(const item of this.cache){
         const key = item[0];
diff --git a/src/index/search.js b/src/index/search.js
index 9f0d7de..f0413a1 100644
--- a/src/index/search.js
+++ b/src/index/search.js
@@ -155,7 +155,7 @@ Index.prototype.search = function(query, limit, options){
         }
 
         query_terms = query_new;
-        length = query.length;
+        length = query_terms.length;
     }
 
     // the term length could be changed after deduplication