diff --git a/README.md b/README.md
index f50ca65..0e5b15e 100644
--- a/README.md
+++ b/README.md
@@ -1352,11 +1352,11 @@ const index = new Document({
 });
 ```
 
-> `Worker`-Index and `Persistent`-Index does not support the fastupdate option, because of its nature.
+> `Persistent`-Index does not support the `fastupdate` option, because of its nature.
 
-When using fastupdate, the index won't fully clear up, when removing items. A barely rest of structure will still remain. It's not a memory issue, because this rest will take less than 1% of the index size. But instead the internal performance of key lookups will lose efficiency, because of not used (empty) keys in the index.
+When using `fastupdate: true`, the index won't fully clear up, when removing items. A barely rest of structure will still remain. It's not a memory issue, because this rest will take less than 1% of the index size. But instead the internal performance of key lookups will lose efficiency, because of not used (empty) keys in the index.
 
-In most cases this is not an issue. But you can trigger a `cleanup` task, which will find those empty index slots and remove them:
+In most cases this is not an issue. But you can trigger a `index.cleanup()` task, which will find those empty index slots and remove them:
 
 ```js
 index.cleanup();
diff --git a/dist/db/clickhouse/db.cjs b/dist/db/clickhouse/index.cjs
similarity index 99%
rename from dist/db/clickhouse/db.cjs
rename to dist/db/clickhouse/index.cjs
index a77c981..9db90ef 100644
--- a/dist/db/clickhouse/db.cjs
+++ b/dist/db/clickhouse/index.cjs
@@ -72,7 +72,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_]/g, "");
 }
 
-let DB;
+let Index;
 
 /**
  * @constructor
@@ -99,7 +99,7 @@ function ClickhouseDB(name, config = {}){
     if(!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
     //this.trx = false;
     this.support_tag_search = true;
-    this.db = DB || (DB = config.db || null);
+    this.db = Index || (Index = config.db || null);
     Object.assign(defaults, config);
     config.database && (defaults.config.database = config.database);
     this.db && delete defaults.db;
@@ -117,8 +117,8 @@ ClickhouseDB.prototype.mount = function(flexsearch){
 ClickhouseDB.prototype.open = async function(){
 
     if(!this.db) {
-        this.db = DB || (
-            DB = new clickhouse.ClickHouse(defaults)
+        this.db = Index || (
+            Index = new clickhouse.ClickHouse(defaults)
         );
     }
 
@@ -200,7 +200,7 @@ ClickhouseDB.prototype.open = async function(){
 
 ClickhouseDB.prototype.close = function(){
     //DB && DB.close();
-    this.db = DB = null;
+    this.db = Index = null;
     return this;
 };
 
diff --git a/dist/db/indexeddb/db.cjs b/dist/db/indexeddb/index.cjs
similarity index 98%
rename from dist/db/indexeddb/db.cjs
rename to dist/db/indexeddb/index.cjs
index 5181ac7..9797b72 100644
--- a/dist/db/indexeddb/db.cjs
+++ b/dist/db/indexeddb/index.cjs
@@ -45,7 +45,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_\-]/g, "");
 }
 
-const DB = create_object();
+const Index = create_object();
 
 /**
  * @param {string|PersistentOptions=} name
@@ -92,8 +92,8 @@ IdxDB.prototype.open = function(){
 
    // return this.db = new Promise(function(resolve, reject){
 
-        DB[self.id] || (DB[self.id] = []);
-        DB[self.id].push(self.field);
+        Index[self.id] || (Index[self.id] = []);
+        Index[self.id].push(self.field);
 
         const req = IndexedDB.open(self.id, VERSION);
 
@@ -109,8 +109,8 @@ IdxDB.prototype.open = function(){
             // IndexedDB is such a poor contribution :(
             for(let i = 0, ref; i < fields.length; i++){
                 ref = fields[i];
-                for(let j = 0, field; j < DB[self.id].length; j++){
-                    field = DB[self.id][j];
+                for(let j = 0, field; j < Index[self.id].length; j++){
+                    field = Index[self.id][j];
                     db.objectStoreNames.contains(ref + (ref !== "reg" ? (field ? ":" + field : "") : "")) ||
                     db.createObjectStore(ref + (ref !== "reg" ? (field ? ":" + field : "") : ""));//{ autoIncrement: true /*keyPath: "id"*/ }
                     //.createIndex("idx", "ids", { multiEntry: true, unique: false });
@@ -195,8 +195,8 @@ IdxDB.prototype.clear = function(){
 
     for(let i = 0, ref; i < fields.length; i++){
         ref = fields[i];
-        for(let j = 0, field; j < DB[this.id].length; j++){
-            field = DB[this.id][j];
+        for(let j = 0, field; j < Index[this.id].length; j++){
+            field = Index[this.id][j];
             stores.push(ref + (ref !== "reg" ? (field ? ":" + field : "") : ""));
         }
     }
diff --git a/dist/db/mongodb/db.cjs b/dist/db/mongodb/index.cjs
similarity index 98%
rename from dist/db/mongodb/db.cjs
rename to dist/db/mongodb/index.cjs
index 5e35ef2..75d134c 100644
--- a/dist/db/mongodb/db.cjs
+++ b/dist/db/mongodb/index.cjs
@@ -37,7 +37,7 @@ function sanitize(str) {
 }
 
 let CLIENT;
-let DB = Object.create(null);
+let Index = Object.create(null);
 
 /**
  * @constructor
@@ -58,7 +58,7 @@ function MongoDB(name, config = {}){
     this.id = "flexsearch" + (name ? "-" + sanitize(name) : "");
     this.field = config.field ? "-" + sanitize(config.field) : "";
     this.type = config.type || "";
-    this.db = config.db || DB[this.id] || CLIENT || null;
+    this.db = config.db || Index[this.id] || CLIENT || null;
     this.trx = false;
     this.support_tag_search = true;
     Object.assign(defaults, config);
@@ -106,7 +106,7 @@ async function createCollection(db, ref, field){
 MongoDB.prototype.open = async function(){
 
     if(!this.db){
-        if(!(this.db = DB[this.id])){
+        if(!(this.db = Index[this.id])){
             if(!(this.db = CLIENT)){
 
                 let url = defaults.url;
@@ -122,7 +122,7 @@ MongoDB.prototype.open = async function(){
     }
 
     if(this.db.db){
-        this.db = DB[this.id] = this.db.db(this.id);
+        this.db = Index[this.id] = this.db.db(this.id);
     }
 
     const collections = await this.db.listCollections().toArray();
@@ -146,7 +146,7 @@ MongoDB.prototype.open = async function(){
 MongoDB.prototype.close = function(){
     //CLIENT && CLIENT.close();
     this.db = CLIENT = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     return this;
 };
 
diff --git a/dist/db/postgres/db.cjs b/dist/db/postgres/index.cjs
similarity index 100%
rename from dist/db/postgres/db.cjs
rename to dist/db/postgres/index.cjs
diff --git a/dist/db/redis/db.cjs b/dist/db/redis/index.cjs
similarity index 100%
rename from dist/db/redis/db.cjs
rename to dist/db/redis/index.cjs
diff --git a/dist/db/sqlite/db.cjs b/dist/db/sqlite/index.cjs
similarity index 99%
rename from dist/db/sqlite/db.cjs
rename to dist/db/sqlite/index.cjs
index 8299af0..db48e08 100644
--- a/dist/db/sqlite/db.cjs
+++ b/dist/db/sqlite/index.cjs
@@ -60,7 +60,7 @@ function sanitize(str) {
 
 // global transaction to keep track of database lock
 const TRX = Object.create(null);
-const DB = Object.create(null);
+const Index = Object.create(null);
 
 /**
  * @constructor
@@ -86,7 +86,7 @@ function SqliteDB(name, config = {}){
     );
     this.field = config.field ? "_" + sanitize(config.field) : "";
     this.support_tag_search = true;
-    this.db = config.db || DB[this.id] || null;
+    this.db = config.db || Index[this.id] || null;
     this.type = config.type ? types[config.type.toLowerCase()] : "string";
     if(!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
 }
@@ -103,7 +103,7 @@ SqliteDB.prototype.open = async function(){
 
     if(!this.db){
 
-        if(!(this.db = DB[this.id])){
+        if(!(this.db = Index[this.id])){
 
             let filepath = this.id;
             if(filepath !== ":memory:"){
@@ -115,7 +115,7 @@ SqliteDB.prototype.open = async function(){
                 }
             }
 
-            this.db = DB[this.id] = new sqlite3.Database(filepath);
+            this.db = Index[this.id] = new sqlite3.Database(filepath);
         }
     }
 
@@ -225,7 +225,7 @@ SqliteDB.prototype.open = async function(){
 SqliteDB.prototype.close = function(){
     this.db && this.db.close();
     this.db = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     TRX[this.id] = null;
     return this;
 };
diff --git a/dist/flexsearch.bundle.debug.js b/dist/flexsearch.bundle.debug.js
index a488bc3..76c6f3f 100644
--- a/dist/flexsearch.bundle.debug.js
+++ b/dist/flexsearch.bundle.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle/Debug)
+ * FlexSearch.js v0.8.147 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -1342,7 +1342,7 @@ U.prototype.search = function(a, c, b, e) {
           }
         }
       } else {
-        for (let G = 0, L, tb; G < l.length; G += 2) {
+        for (let G = 0, L, sb; G < l.length; G += 2) {
           L = this.tag.get(l[G]);
           if (!L) {
             if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), r) {
@@ -1351,7 +1351,7 @@ U.prototype.search = function(a, c, b, e) {
               return m ? d : new W(d);
             }
           }
-          if (tb = (L = L && L.get(l[G + 1])) && L.length) {
+          if (sb = (L = L && L.get(l[G + 1])) && L.length) {
             y++, w.push(L);
           } else if (!r) {
             return m ? d : new W(d);
@@ -1696,10 +1696,11 @@ t.cleanup = function() {
 };
 t.get = function(a) {
   return this.db ? this.index.get(this.field[0]).db.enrich(a).then(function(c) {
-    return c[0] && c[0].doc;
-  }) : this.store.get(a);
+    return c[0] && c[0].doc || null;
+  }) : this.store.get(a) || null;
 };
 t.set = function(a, c) {
+  "object" === typeof a && (c = a, a = ba(c, this.key));
   this.store.set(a, c);
   return this;
 };
@@ -1815,22 +1816,21 @@ X.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-const Wa = {normalize:!1, numeric:!1, split:/\s+/};
-const Xa = {normalize:!0};
-const Ya = {normalize:!0, dedupe:!0};
-const Za = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
-const $a = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), ab = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-const bb = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
-var cb = {X:Wa, W:Xa, Y:Ya, LatinBalance:{normalize:!0, dedupe:!0, mapper:Za}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:Za, matcher:$a, replacer:ab}, LatinExtra:{normalize:!0, dedupe:!0, mapper:Za, replacer:ab.concat([/(?!^)[aeo]/g, ""]), matcher:$a}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
+const Wa = {normalize:!1, numeric:!1};
+const Xa = {};
+const Ya = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
+const Za = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), $a = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+const ab = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
+var bb = {X:Wa, W:Xa, Y:Xa, LatinBalance:{dedupe:!0, mapper:Ya}, LatinAdvanced:{dedupe:!0, mapper:Ya, matcher:Za, replacer:$a}, LatinExtra:{dedupe:!0, mapper:Ya, replacer:$a.concat([/(?!^)[aeo]/g, ""]), matcher:Za}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (let b = 0; b < a.length; b++) {
     var c = a[b];
-    let e = c.charAt(0), d = bb[e];
-    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = bb[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
+    let e = c.charAt(0), d = ab[e];
+    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = ab[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
     }
     a[b] = e;
   }
-}}, LatinExact:Wa, LatinDefault:Xa, LatinSimple:Ya};
-const db = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+}}, LatinExact:Wa, LatinDefault:Xa, LatinSimple:Xa};
+const cb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 N.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -1843,7 +1843,7 @@ N.prototype.add = function(a, c, b, e) {
         let r = c[this.rtl ? e - 1 - p : p];
         var d = r.length;
         if (d && (m || !n[r])) {
-          var f = this.score ? this.score(c, r, p, null, 0) : eb(q, e, p), g = "";
+          var f = this.score ? this.score(c, r, p, null, 0) : db(q, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
@@ -1851,8 +1851,8 @@ N.prototype.add = function(a, c, b, e) {
                   for (f = d; f > u; f--) {
                     g = r.substring(u, f);
                     v = this.rtl ? d - 1 - u : u;
-                    var k = this.score ? this.score(c, r, p, g, v) : eb(q, e, p, d, v);
-                    fb(this, n, g, k, a, b);
+                    var k = this.score ? this.score(c, r, p, g, v) : db(q, e, p, d, v);
+                    eb(this, n, g, k, a, b);
                   }
                 }
                 break;
@@ -1862,25 +1862,25 @@ N.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = r[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, r, p, g, k) : eb(q, e, p, d, k);
-                  fb(this, n, g, h, a, b);
+                  var h = this.score ? this.score(c, r, p, g, k) : db(q, e, p, d, k);
+                  eb(this, n, g, h, a, b);
                 }
                 g = "";
               }
             case "forward":
               if (1 < d) {
                 for (k = 0; k < d; k++) {
-                  g += r[this.rtl ? d - 1 - k : k], fb(this, n, g, f, a, b);
+                  g += r[this.rtl ? d - 1 - k : k], eb(this, n, g, f, a, b);
                 }
                 break;
               }
             default:
-              if (fb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
+              if (eb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
                 for (d = B(), g = this.U, f = r, k = Math.min(m + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((r = c[this.rtl ? e - 1 - p - h : p + h]) && !d[r]) {
                     d[r] = 1;
-                    const u = this.score ? this.score(c, f, p, r, h - 1) : eb(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), v = this.bidirectional && r > f;
-                    fb(this, l, v ? f : r, u, a, b, v ? r : f);
+                    const u = this.score ? this.score(c, f, p, r, h - 1) : db(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), v = this.bidirectional && r > f;
+                    eb(this, l, v ? f : r, u, a, b, v ? r : f);
                   }
                 }
               }
@@ -1892,10 +1892,10 @@ N.prototype.add = function(a, c, b, e) {
       c = "";
     }
   }
-  this.db && (c || this.commit_task.push({del:a}), this.T && gb(this));
+  this.db && (c || this.commit_task.push({del:a}), this.T && fb(this));
   return this;
 };
-function fb(a, c, b, e, d, f, g) {
+function eb(a, c, b, e, d, f, g) {
   let k = g ? a.ctx : a.map, h;
   if (!c[b] || g && !(h = c[b])[g]) {
     if (g ? (c = h || (c[b] = B()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = h = []), k = k[e] || (k[e] = []), !f || !k.includes(d)) {
@@ -1913,7 +1913,7 @@ function fb(a, c, b, e, d, f, g) {
     }
   }
 }
-function eb(a, c, b, e, d) {
+function db(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
 ;N.prototype.search = function(a, c, b) {
@@ -1924,11 +1924,11 @@ function eb(a, c, b, e, d) {
   d = p.length;
   c = c || (h ? 100 : 0);
   if (1 === d) {
-    return hb.call(this, p[0], "", c, k, h, q, l);
+    return gb.call(this, p[0], "", c, k, h, q, l);
   }
   f = this.depth && !1 !== f;
   if (2 === d && f && !g) {
-    return hb.call(this, p[0], p[1], c, k, h, q, l);
+    return gb.call(this, p[1], p[0], c, k, h, q, l);
   }
   let r = B(), u = 0, v;
   1 < d && f && (v = p[0], u = 1);
@@ -1942,8 +1942,8 @@ function eb(a, c, b, e, d) {
       for (let y, F; u < d; u++) {
         if ((F = p[u]) && !r[F]) {
           r[F] = 1;
-          y = await ib(w, F, v, 0, 0, !1, !1);
-          if (y = jb(y, e, g, m)) {
+          y = await hb(w, F, v, 0, 0, !1, !1);
+          if (y = ib(y, e, g, m)) {
             e = y;
             break;
           }
@@ -1951,14 +1951,14 @@ function eb(a, c, b, e, d) {
         }
         g && v && u === d - 1 && !e.length && (m = w.resolution, v = "", u = -1, r = B());
       }
-      return kb(e, m, c, k, g, n, h);
+      return jb(e, m, c, k, g, n, h);
     }();
   }
   for (let w, y; u < d; u++) {
     if ((y = p[u]) && !r[y]) {
       r[y] = 1;
-      w = ib(this, y, v, 0, 0, !1, !1);
-      if (w = jb(w, e, g, m)) {
+      w = hb(this, y, v, 0, 0, !1, !1);
+      if (w = ib(w, e, g, m)) {
         e = w;
         break;
       }
@@ -1966,9 +1966,9 @@ function eb(a, c, b, e, d) {
     }
     g && v && u === d - 1 && !e.length && (m = this.resolution, v = "", u = -1, r = B());
   }
-  return kb(e, m, c, k, g, n, h);
+  return jb(e, m, c, k, g, n, h);
 };
-function kb(a, c, b, e, d, f, g) {
+function jb(a, c, b, e, d, f, g) {
   let k = a.length, h = a;
   if (1 < k) {
     h = Fa(a, c, b, e, d, f, g);
@@ -1977,13 +1977,13 @@ function kb(a, c, b, e, d, f, g) {
   }
   return g ? h : new W(h);
 }
-function hb(a, c, b, e, d, f, g) {
-  a = ib(this, a, c, b, e, d, f, g);
+function gb(a, c, b, e, d, f, g) {
+  a = hb(this, a, c, b, e, d, f, g);
   return this.db ? a.then(function(k) {
     return d ? k || [] : new W(k);
   }) : a && a.length ? d ? Ia.call(this, a, b, e) : new W(a) : d ? [] : new W();
 }
-function jb(a, c, b, e) {
+function ib(a, c, b, e) {
   let d = [];
   if (a && a.length) {
     if (a.length <= e) {
@@ -2004,7 +2004,7 @@ function jb(a, c, b, e) {
     return d;
   }
 }
-function ib(a, c, b, e, d, f, g, k) {
+function hb(a, c, b, e, d, f, g, k) {
   let h;
   b && (h = a.bidirectional && c > b) && (h = b, b = c, c = h);
   if (a.db) {
@@ -2028,15 +2028,15 @@ function ib(a, c, b, e, d, f, g, k) {
         }
       }
     } else {
-      lb(this.map, a), this.depth && lb(this.ctx, a);
+      kb(this.map, a), this.depth && kb(this.ctx, a);
     }
     c || this.reg.delete(a);
   }
-  this.db && (this.commit_task.push({del:a}), this.T && gb(this));
+  this.db && (this.commit_task.push({del:a}), this.T && fb(this));
   this.cache && this.cache.remove(a);
   return this;
 };
-function lb(a, c) {
+function kb(a, c) {
   let b = 0;
   if (a.constructor === Array) {
     for (let e = 0, d, f; e < a.length; e++) {
@@ -2051,7 +2051,7 @@ function lb(a, c) {
     }
   } else {
     for (let e of a.entries()) {
-      const d = e[0], f = lb(e[1], c);
+      const d = e[0], f = kb(e[1], c);
       f ? b += f : a.delete(d);
     }
   }
@@ -2063,12 +2063,12 @@ function lb(a, c) {
   }
   if (a) {
     var b = E(a) ? a : a.preset;
-    b && (db[b] || console.warn("Preset not found: " + b), a = Object.assign({}, db[b], a));
+    b && (cb[b] || console.warn("Preset not found: " + b), a = Object.assign({}, cb[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = E(a.encoder) ? cb[a.encoder] : a.encode || a.encoder || Xa;
+  const e = !0 === b ? {depth:1} : b || {}, d = E(a.encoder) ? bb[a.encoder] : a.encode || a.encoder || {};
   this.encoder = d.encode ? d : "object" === typeof d ? new ja(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -2106,7 +2106,7 @@ t.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function gb(a) {
+function fb(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
@@ -2130,7 +2130,7 @@ 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 mb(a) {
+function lb(a) {
   let c = 0;
   if (a.constructor === Array) {
     for (let b = 0, e; b < a.length; b++) {
@@ -2138,7 +2138,7 @@ function mb(a) {
     }
   } else {
     for (const b of a.entries()) {
-      const e = b[0], d = mb(b[1]);
+      const e = b[0], d = lb(b[1]);
       d ? c += d : a.delete(e);
     }
   }
@@ -2148,8 +2148,8 @@ t.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  mb(this.map);
-  this.depth && mb(this.ctx);
+  lb(this.map);
+  this.depth && lb(this.ctx);
   return this;
 };
 t.searchCache = Va;
@@ -2214,10 +2214,10 @@ t.serialize = function(a = !0) {
   return a ? "function inject(index){" + c + b + e + "}" : c + b + e;
 };
 la(N.prototype);
-const nb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), ob = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
-function pb(a, c = {}) {
+const mb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), nb = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
+function ob(a, c = {}) {
   if (!this) {
-    return new pb(a, c);
+    return new ob(a, c);
   }
   "object" === typeof a && (c = a, a = a.name);
   a || console.info("Default storage space was used, because a name was not passed.");
@@ -2228,7 +2228,7 @@ function pb(a, c = {}) {
   this.db = null;
   this.h = {};
 }
-t = pb.prototype;
+t = ob.prototype;
 t.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
@@ -2244,11 +2244,11 @@ t.open = function() {
   navigator.storage && navigator.storage.persist();
   Y[a.id] || (Y[a.id] = []);
   Y[a.id].push(a.field);
-  const c = nb.open(a.id, 1);
+  const c = mb.open(a.id, 1);
   c.onupgradeneeded = function() {
     const b = a.db = this.result;
-    for (let e = 0, d; e < ob.length; e++) {
-      d = ob[e];
+    for (let e = 0, d; e < nb.length; e++) {
+      d = nb[e];
       for (let f = 0, g; f < Y[a.id].length; f++) {
         g = Y[a.id][f], b.objectStoreNames.contains(d + ("reg" !== d ? g ? ":" + g : "" : "")) || b.createObjectStore(d + ("reg" !== d ? g ? ":" + g : "" : ""));
       }
@@ -2266,13 +2266,13 @@ t.close = function() {
   this.db = null;
 };
 t.destroy = function() {
-  const a = nb.deleteDatabase(this.id);
+  const a = mb.deleteDatabase(this.id);
   return Z(a);
 };
 t.clear = function() {
   const a = [];
-  for (let b = 0, e; b < ob.length; b++) {
-    e = ob[b];
+  for (let b = 0, e; b < nb.length; b++) {
+    e = nb[b];
     for (let d = 0, f; d < Y[this.id].length; d++) {
       f = Y[this.id][d], a.push(e + ("reg" !== e ? f ? ":" + f : "" : ""));
     }
@@ -2459,7 +2459,7 @@ t.commit = async function(a, c, b) {
     }
   }), a.map.clear(), a.ctx.clear(), a.tag && a.tag.clear(), a.store && a.store.clear(), a.document || a.reg.clear());
 };
-function qb(a, c, b) {
+function pb(a, c, b) {
   const e = a.value;
   let d, f = 0;
   for (let g = 0, k; g < e.length; g++) {
@@ -2488,17 +2488,17 @@ t.remove = function(a) {
   return Promise.all([this.transaction("map", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && qb(b, a);
+      b && pb(b, a);
     };
   }), this.transaction("ctx", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && qb(b, a);
+      b && pb(b, a);
     };
   }), this.transaction("tag", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && qb(b, a, !0);
+      b && pb(b, a, !0);
     };
   }), this.transaction("reg", "readwrite", function(c) {
     for (let b = 0; b < a.length; b++) {
@@ -2517,9 +2517,9 @@ function Z(a, c) {
     a = null;
   });
 }
-;const rb = {Index:N, Charset:cb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:pb, Language:{}}, sb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
-let ub;
-(ub = sb.define) && ub.amd ? ub([], function() {
-  return rb;
-}) : "object" === typeof sb.exports ? sb.exports = rb : sb.FlexSearch = rb;
+;const qb = {Index:N, Charset:bb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:ob, Language:{}}, rb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
+let tb;
+(tb = rb.define) && tb.amd ? tb([], function() {
+  return qb;
+}) : "object" === typeof rb.exports ? rb.exports = qb : rb.FlexSearch = qb;
 }(this||self));
diff --git a/dist/flexsearch.bundle.min.js b/dist/flexsearch.bundle.min.js
index c2f500d..2eed83a 100644
--- a/dist/flexsearch.bundle.min.js
+++ b/dist/flexsearch.bundle.min.js
@@ -1,19 +1,19 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle)
+ * FlexSearch.js v0.8.147 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
 (function _f(self){'use strict';if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;var t;function z(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(h){return a(b(h))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function B(){return Object.create(null)}function E(a){return"string"===typeof a}
-function I(a){return"object"===typeof a}function aa(a){const c=[];for(const b of a.keys())c.push(b);return c}function ba(a,c){if(E(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function ca(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const da=/[^\p{L}\p{N}]+/u,ea=/(\d{3})/g,fa=/(\D)(\d{3})/g,ha=/(\d{3})(\D)/g,ia=/[\u0300-\u036f]/g;function J(a={}){if(!this||this.constructor!==J)return new J(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}t=J.prototype;
+function I(a){return"object"===typeof a}function aa(a){const c=[];for(const b of a.keys())c.push(b);return c}function J(a,c){if(E(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function ba(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ca=/[^\p{L}\p{N}]+/u,da=/(\d{3})/g,ea=/(\D)(\d{3})/g,fa=/(\d{3})(\D)/g,ha=/[\u0300-\u036f]/g;function ia(a={}){if(!this||this.constructor!==ia)return new ia(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}t=ia.prototype;
 t.assign=function(a){this.normalize=z(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
-this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,da)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:z(b&&new Set(b),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=z((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=z((b=a.stemmer)&&new Map(b),
+this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,ca)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:z(b&&new Set(b),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=z((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=z((b=a.stemmer)&&new Map(b),
 null,this.stemmer);this.replacer=z(a.replacer,null,this.replacer);this.minlength=z(a.minlength,1,this.minlength);this.maxlength=z(a.maxlength,0,this.maxlength);this.rtl=z(a.rtl,!1,this.rtl);if(this.cache=b=z(a.cache,!0,this.cache))this.H=null,this.S="number"===typeof b?b:2E5,this.B=new Map,this.G=new Map,this.L=this.K=128;this.h="";this.M=null;this.A="";this.N=null;if(this.matcher)for(const d of this.matcher.keys())this.h+=(this.h?"|":"")+d;if(this.stemmer)for(const d of this.stemmer.keys())this.A+=
 (this.A?"|":"")+d;return this};t.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.A+=(this.A?"|":"")+a;this.N=null;this.cache&&K(this);return this};t.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&K(this);return this};
 t.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&K(this);return this};t.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&K(this);return this};
 t.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&K(this);return this};
-t.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.B.has(a))return this.B.get(a)}else this.H=setTimeout(K,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=ia?a.normalize("NFKD").replace(ia,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(fa,"$1 $2").replace(ha,"$1 $2").replace(ea,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
+t.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.B.has(a))return this.B.get(a)}else this.H=setTimeout(K,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=ha?a.normalize("NFKD").replace(ha,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(ea,"$1 $2").replace(fa,"$1 $2").replace(da,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
 [],e=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,h;f<e.length;f++)if((g=h=e[f])&&!(g.length<this.minlength))if(c)b.push(g);else if(!this.filter||("function"===typeof this.filter?this.filter(g):!this.filter.has(g))){if(this.cache&&g.length<=this.L)if(this.H){var d=this.G.get(g);if(d||""===d){d&&b.push(d);continue}}else this.H=setTimeout(K,50,this);this.stemmer&&2<g.length&&(this.N||(this.N=new RegExp("(?!^)("+this.A+")$")),d=g,g=g.replace(this.N,k=>this.stemmer.get(k)),d!==g&&this.filter&&
 g.length>=this.minlength&&("function"===typeof this.filter?!this.filter(g):this.filter.has(g))&&(g=""));if(g&&(this.mapper||this.dedupe&&1<g.length)){d="";for(let k=0,l="",n,m;k<g.length;k++)n=g.charAt(k),n===l&&this.dedupe||((m=this.mapper&&this.mapper.get(n))||""===m?m===l&&this.dedupe||!(l=m)||(d+=m):d+=l=n);g=d}this.matcher&&1<g.length&&(this.M||(this.M=new RegExp("("+this.h+")","g")),g=g.replace(this.M,k=>this.matcher.get(k)));if(g&&this.replacer)for(d=0;g&&d<this.replacer.length;d+=2)g=g.replace(this.replacer[d],
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@@ -31,26 +31,26 @@ if("includes"===e)return function(d){for(let f=0;f<c.index.length;f++)if(c.index
 R.prototype.destroy=function(){this.proxy=this.index=null};R.prototype.push=function(){};function S(a=8){if(!this||this.constructor!==S)return new S(a);this.index=B();this.h=[];this.size=0;32<a?(this.B=Ba,this.A=BigInt(a)):(this.B=Ca,this.A=a)}S.prototype.get=function(a){const c=this.index[this.B(a)];return c&&c.get(a)};S.prototype.set=function(a,c){var b=this.B(a);let e=this.index[b];e?(b=e.size,e.set(a,c),(b-=e.size)&&this.size++):(this.index[b]=e=new Map([[a,c]]),this.h.push(e),this.size++)};
 function T(a=8){if(!this||this.constructor!==T)return new T(a);this.index=B();this.h=[];this.size=0;32<a?(this.B=Ba,this.A=BigInt(a)):(this.B=Ca,this.A=a)}T.prototype.add=function(a){var c=this.B(a);let b=this.index[c];b?(c=b.size,b.add(a),(c-=b.size)&&this.size++):(this.index[c]=b=new Set([a]),this.h.push(b),this.size++)};t=S.prototype;t.has=T.prototype.has=function(a){const c=this.index[this.B(a)];return c&&c.has(a)};
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+e,p,h-1,k-1),v=this.bidirectional&&r>f;eb(this,l,v?f:r,u,a,b,v?r:f)}}}}this.fastupdate||this.reg.add(a)}else c=""}this.db&&(c||this.commit_task.push({del:a}),this.T&&fb(this));return this};
+function eb(a,c,b,e,d,f,g){let h=g?a.ctx:a.map,k;if(!c[b]||g&&!(k=c[b])[g])if(g?(c=k||(c[b]=B()),c[g]=1,(k=h.get(g))?h=k:h.set(g,h=new Map)):c[b]=1,(k=h.get(b))?h=k:h.set(b,h=k=[]),h=h[e]||(h[e]=[]),!f||!h.includes(d)){if(h.length===2**31-1){c=new R(h);if(a.fastupdate)for(let l of a.reg.values())l.includes(h)&&(l[l.indexOf(h)]=c);k[e]=h=c}h.push(d);a.fastupdate&&((e=a.reg.get(d))?e.push(h):a.reg.set(d,[h]))}}
+function db(a,c,b,e,d){return b&&1<a?c+(e||0)<=a?b+(d||0):(a-1)/(c+(e||0))*(b+(d||0))+1|0:0};N.prototype.search=function(a,c,b){b||(!c&&I(a)?(b=a,a=""):I(c)&&(b=c,c=0));let e=[],d,f,g,h=0,k,l,n,m,q;b?(a=b.query||a,c=b.limit||c,h=b.offset||0,f=b.context,g=b.suggest,q=(k=!1!==b.resolve)&&b.enrich,n=b.boost,m=b.resolution,l=this.db&&b.tag):k=this.resolve;let p=this.encoder.encode(a);d=p.length;c=c||(k?100:0);if(1===d)return gb.call(this,p[0],"",c,h,k,q,l);f=this.depth&&!1!==f;if(2===d&&f&&!g)return gb.call(this,p[1],p[0],c,h,k,q,l);let r=B(),u=0,v;1<d&&f&&(v=p[0],u=1);m||0===m||(m=v?this.U:
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+!e.length&&(m=this.resolution,v="",u=-1,r=B())}return jb(e,m,c,h,g,n,k)};function jb(a,c,b,e,d,f,g){let h=a.length,k=a;if(1<h)k=Fa(a,c,b,e,d,f,g);else if(1===h)return g?Ia.call(null,a[0],b,e):new W(a[0]);return g?k:new W(k)}function gb(a,c,b,e,d,f,g){a=hb(this,a,c,b,e,d,f,g);return this.db?a.then(function(h){return d?h||[]:new W(h)}):a&&a.length?d?Ia.call(this,a,b,e):new W(a):d?[]:new W}
+function ib(a,c,b,e){let d=[];if(a&&a.length){if(a.length<=e){c.push(a);return}for(let f=0,g;f<e;f++)if(g=a[f])d[f]=g;if(d.length){c.push(d);return}}if(!b)return d}function hb(a,c,b,e,d,f,g,h){let k;b&&(k=a.bidirectional&&c>b)&&(k=b,b=c,c=k);if(a.db)return a.db.get(c,b,e,d,f,g,h);a=b?(a=a.ctx.get(b))&&a.get(c):a.map.get(c);return a};N.prototype.remove=function(a,c){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let e=0,d;e<b.length;e++){if(d=b[e])if(2>d.length)d.pop();else{const f=d.indexOf(a);f===b.length-1?d.pop():d.splice(f,1)}}else kb(this.map,a),this.depth&&kb(this.ctx,a);c||this.reg.delete(a)}this.db&&(this.commit_task.push({del:a}),this.T&&fb(this));this.cache&&this.cache.remove(a);return this};
+function kb(a,c){let b=0;if(a.constructor===Array)for(let e=0,d,f;e<a.length;e++){if((d=a[e])&&d.length)if(f=d.indexOf(c),0<=f){1<d.length?(d.splice(f,1),b++):delete a[e];break}else b++}else for(let e of a.entries()){const d=e[0],f=kb(e[1],c);f?b+=f:a.delete(d)}return b};function N(a,c){if(!this||this.constructor!==N)return new N(a);if(a){var b=E(a)?a:a.preset;b&&(a=Object.assign({},cb[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=E(a.encoder)?bb[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new ia(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
 this.score=a.score||null;(b=a.keystore||0)&&(this.keystore=b);this.map=b?new S(b):new Map;this.ctx=b?new S(b):new Map;this.reg=c||(this.fastupdate?b?new S(b):new Map:b?new T(b):new Set);this.U=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new X(b);this.resolve=!1!==a.resolve;if(b=a.db)this.db=this.mount(b);this.T=!1!==a.commit;this.commit_task=[];this.commit_timer=null;this.priority=a.priority||4}t=N.prototype;
-t.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};t.commit=function(a,c){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,c)};t.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function gb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
+t.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};t.commit=function(a,c){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,c)};t.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function fb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
 t.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]);return this};t.append=function(a,c){return this.add(a,c,!0)};t.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)};t.update=function(a,c){const b=this,e=this.remove(a);return e&&e.then?e.then(()=>b.add(a,c)):this.add(a,c)};
-function mb(a){let c=0;if(a.constructor===Array)for(let b=0,e;b<a.length;b++)(e=a[b])&&(c+=e.length);else for(const b of a.entries()){const e=b[0],d=mb(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;mb(this.map);this.depth&&mb(this.ctx);return this};t.searchCache=Va;
+function lb(a){let c=0;if(a.constructor===Array)for(let b=0,e;b<a.length;b++)(e=a[b])&&(c+=e.length);else for(const b of a.entries()){const e=b[0],d=lb(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;lb(this.map);this.depth&&lb(this.ctx);return this};t.searchCache=Va;
 t.export=function(a,c,b=0,e=0){let d,f;switch(e){case 0:d="reg";f=wa(this.reg);break;case 1:d="cfg";f=null;break;case 2:d="map";f=sa(this.map,this.reg.size);break;case 3:d="ctx";f=ua(this.ctx,this.reg.size);break;default:return}return ya.call(this,a,c,d,f,b,e)};
 t.import=function(a,c){if(c)switch("string"===typeof c&&(c=JSON.parse(c)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=xa(c,this.reg);break;case "map":this.map=ta(c,this.map);break;case "ctx":this.ctx=va(c,this.ctx)}};
-t.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=za(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};la(N.prototype);const nb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),ob=["map","ctx","tag","reg","cfg"],Y=B();
-function pb(a,c={}){if(!this)return new pb(a,c);"object"===typeof a&&(c=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=c.field?c.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=c.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}t=pb.prototype;t.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
-t.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const c=nb.open(a.id,1);c.onupgradeneeded=function(){const b=a.db=this.result;for(let e=0,d;e<ob.length;e++){d=ob[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],b.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||b.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(c,function(b){a.db=b;a.db.onversionchange=function(){a.close()}})};
-t.close=function(){this.db&&this.db.close();this.db=null};t.destroy=function(){const a=nb.deleteDatabase(this.id);return Z(a)};t.clear=function(){const a=[];for(let b=0,e;b<ob.length;b++){e=ob[b];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const c=this.db.transaction(a,"readwrite");for(let b=0;b<a.length;b++)c.objectStore(a[b]).clear();return Z(c)};
+t.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=za(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};la(N.prototype);const mb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),nb=["map","ctx","tag","reg","cfg"],Y=B();
+function ob(a,c={}){if(!this)return new ob(a,c);"object"===typeof a&&(c=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=c.field?c.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=c.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}t=ob.prototype;t.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+t.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const c=mb.open(a.id,1);c.onupgradeneeded=function(){const b=a.db=this.result;for(let e=0,d;e<nb.length;e++){d=nb[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],b.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||b.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(c,function(b){a.db=b;a.db.onversionchange=function(){a.close()}})};
+t.close=function(){this.db&&this.db.close();this.db=null};t.destroy=function(){const a=mb.deleteDatabase(this.id);return Z(a)};t.clear=function(){const a=[];for(let b=0,e;b<nb.length;b++){e=nb[b];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const c=this.db.transaction(a,"readwrite");for(let b=0;b<a.length;b++)c.objectStore(a[b]).clear();return Z(c)};
 t.get=function(a,c,b=0,e=0,d=!0,f=!1){a=this.db.transaction((c?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((c?"ctx":"map")+(this.field?":"+this.field:"")).get(c?c+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(d){if(!b&&!e&&1===h.length)return h[0];for(let l=0,n;l<h.length;l++)if((n=h[l])&&n.length){if(e>=n.length){e-=n.length;continue}const m=b?e+Math.min(n.length-e,b):n.length;for(let q=e;q<m;q++)k.push(n[q]);e=0;if(k.length===b)break}return f?
 g.enrich(k):k}return h})};t.tag=function(a,c=0,b=0,e=!1){a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);const d=this;return Z(a).then(function(f){if(!f||!f.length||b>=f.length)return[];if(!c&&!b)return f;f=f.slice(b,b+c);return e?d.enrich(f):f})};
 t.enrich=function(a){"object"!==typeof a&&(a=[a]);const c=this.db.transaction("reg","readonly").objectStore("reg"),b=[];for(let e=0;e<a.length;e++)b[e]=Z(c.get(a[e]));return Promise.all(b).then(function(e){for(let d=0;d<e.length;d++)e[d]={id:a[d],doc:e[d]?JSON.parse(e[d]):null};return e})};t.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(c){return!!c})};t.search=null;t.info=function(){};
@@ -91,6 +90,6 @@ t.transaction=function(a,c,b){a+="reg"!==a?this.field?":"+this.field:"":"";let e
 t.commit=async function(a,c,b){if(c)await this.clear(),a.commit_task=[];else{let e=a.commit_task;a.commit_task=[];for(let d=0,f;d<e.length;d++)if(f=e[d],f.clear){await this.clear();c=!0;break}else e[d]=f.del;c||(b||(e=e.concat(aa(a.reg))),e.length&&await this.remove(e))}a.reg.size&&(await this.transaction("map","readwrite",function(e){for(const d of a.map){const f=d[0],g=d[1];g.length&&(c?e.put(g,f):e.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
 for(let n=0,m,q;n<l;n++)if((q=g[n])&&q.length){if((m=h[n])&&m.length)for(k=0;k<q.length;k++)m.push(q[k]);else h[n]=q;k=1}}else h=g,k=1;k&&e.put(h,f)})}}),await this.transaction("ctx","readwrite",function(e){for(const d of a.ctx){const f=d[0],g=d[1];for(const h of g){const k=h[0],l=h[1];l.length&&(c?e.put(l,f+":"+k):e.get(f+":"+k).onsuccess=function(){let n=this.result;var m;if(n&&n.length){const q=Math.max(n.length,l.length);for(let p=0,r,u;p<q;p++)if((u=l[p])&&u.length){if((r=n[p])&&r.length)for(m=
 0;m<u.length;m++)r.push(u[m]);else n[p]=u;m=1}}else n=l,m=1;m&&e.put(n,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(e){for(const d of a.store){const f=d[0],g=d[1];e.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(e){for(const d of a.reg.keys())e.put(1,d)}),a.tag&&await this.transaction("tag","readwrite",function(e){for(const d of a.tag){const f=d[0],g=d[1];g.length&&(e.get(f).onsuccess=function(){let h=this.result;
-h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function qb(a,c,b){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=b?e:e[g]){for(let k=0,l,n;k<c.length;k++)if(n=c[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(b)break}f?d&&a.update(e):a.delete();a.continue()}
-t.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a)}}),this.transaction("ctx","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a)}}),this.transaction("tag","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a,!0)}}),this.transaction("reg","readwrite",function(c){for(let b=0;b<a.length;b++)c.delete(a[b])})])};
-function Z(a,c){return new Promise((b,e)=>{a.onsuccess=a.oncomplete=function(){c&&c(this.result);c=null;b(this.result)};a.onerror=a.onblocked=e;a=null})};const rb={Index:N,Charset:cb,Encoder:J,Document:U,Worker:P,Resolver:W,IndexedDB:pb,Language:{}},tb="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let ub;(ub=tb.define)&&ub.amd?ub([],function(){return rb}):"object"===typeof tb.exports?tb.exports=rb:tb.FlexSearch=rb;}(this||self));
+h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function pb(a,c,b){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=b?e:e[g]){for(let k=0,l,n;k<c.length;k++)if(n=c[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(b)break}f?d&&a.update(e):a.delete();a.continue()}
+t.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&pb(b,a)}}),this.transaction("ctx","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&pb(b,a)}}),this.transaction("tag","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&pb(b,a,!0)}}),this.transaction("reg","readwrite",function(c){for(let b=0;b<a.length;b++)c.delete(a[b])})])};
+function Z(a,c){return new Promise((b,e)=>{a.onsuccess=a.oncomplete=function(){c&&c(this.result);c=null;b(this.result)};a.onerror=a.onblocked=e;a=null})};const qb={Index:N,Charset:bb,Encoder:ia,Document:U,Worker:P,Resolver:W,IndexedDB:ob,Language:{}},sb="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let tb;(tb=sb.define)&&tb.amd?tb([],function(){return qb}):"object"===typeof sb.exports?sb.exports=qb:sb.FlexSearch=qb;}(this||self));
diff --git a/dist/flexsearch.bundle.module.debug.js b/dist/flexsearch.bundle.module.debug.js
index 6aa96e8..d542f4c 100644
--- a/dist/flexsearch.bundle.module.debug.js
+++ b/dist/flexsearch.bundle.module.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle/Module/Debug)
+ * FlexSearch.js v0.8.147 (Bundle/Module/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -1341,7 +1341,7 @@ U.prototype.search = function(a, c, b, e) {
           }
         }
       } else {
-        for (let G = 0, L, qb; G < l.length; G += 2) {
+        for (let G = 0, L, pb; G < l.length; G += 2) {
           L = this.tag.get(l[G]);
           if (!L) {
             if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), r) {
@@ -1350,7 +1350,7 @@ U.prototype.search = function(a, c, b, e) {
               return m ? d : new W(d);
             }
           }
-          if (qb = (L = L && L.get(l[G + 1])) && L.length) {
+          if (pb = (L = L && L.get(l[G + 1])) && L.length) {
             y++, w.push(L);
           } else if (!r) {
             return m ? d : new W(d);
@@ -1695,10 +1695,11 @@ t.cleanup = function() {
 };
 t.get = function(a) {
   return this.db ? this.index.get(this.field[0]).db.enrich(a).then(function(c) {
-    return c[0] && c[0].doc;
-  }) : this.store.get(a);
+    return c[0] && c[0].doc || null;
+  }) : this.store.get(a) || null;
 };
 t.set = function(a, c) {
+  "object" === typeof a && (c = a, a = ba(c, this.key));
   this.store.set(a, c);
   return this;
 };
@@ -1814,22 +1815,21 @@ X.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-const Wa = {normalize:!1, numeric:!1, split:/\s+/};
-const Xa = {normalize:!0};
-const Ya = {normalize:!0, dedupe:!0};
-const Za = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
-const $a = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), ab = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-const bb = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
-var cb = {X:Wa, W:Xa, Y:Ya, LatinBalance:{normalize:!0, dedupe:!0, mapper:Za}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:Za, matcher:$a, replacer:ab}, LatinExtra:{normalize:!0, dedupe:!0, mapper:Za, replacer:ab.concat([/(?!^)[aeo]/g, ""]), matcher:$a}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
+const Wa = {normalize:!1, numeric:!1};
+const Xa = {};
+const Ya = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
+const Za = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), $a = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+const ab = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
+var bb = {X:Wa, W:Xa, Y:Xa, LatinBalance:{dedupe:!0, mapper:Ya}, LatinAdvanced:{dedupe:!0, mapper:Ya, matcher:Za, replacer:$a}, LatinExtra:{dedupe:!0, mapper:Ya, replacer:$a.concat([/(?!^)[aeo]/g, ""]), matcher:Za}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (let b = 0; b < a.length; b++) {
     var c = a[b];
-    let e = c.charAt(0), d = bb[e];
-    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = bb[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
+    let e = c.charAt(0), d = ab[e];
+    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = ab[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
     }
     a[b] = e;
   }
-}}, LatinExact:Wa, LatinDefault:Xa, LatinSimple:Ya};
-const db = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+}}, LatinExact:Wa, LatinDefault:Xa, LatinSimple:Xa};
+const cb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 N.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -1842,7 +1842,7 @@ N.prototype.add = function(a, c, b, e) {
         let r = c[this.rtl ? e - 1 - p : p];
         var d = r.length;
         if (d && (m || !n[r])) {
-          var f = this.score ? this.score(c, r, p, null, 0) : eb(q, e, p), g = "";
+          var f = this.score ? this.score(c, r, p, null, 0) : db(q, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
@@ -1850,8 +1850,8 @@ N.prototype.add = function(a, c, b, e) {
                   for (f = d; f > u; f--) {
                     g = r.substring(u, f);
                     v = this.rtl ? d - 1 - u : u;
-                    var k = this.score ? this.score(c, r, p, g, v) : eb(q, e, p, d, v);
-                    fb(this, n, g, k, a, b);
+                    var k = this.score ? this.score(c, r, p, g, v) : db(q, e, p, d, v);
+                    eb(this, n, g, k, a, b);
                   }
                 }
                 break;
@@ -1861,25 +1861,25 @@ N.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = r[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, r, p, g, k) : eb(q, e, p, d, k);
-                  fb(this, n, g, h, a, b);
+                  var h = this.score ? this.score(c, r, p, g, k) : db(q, e, p, d, k);
+                  eb(this, n, g, h, a, b);
                 }
                 g = "";
               }
             case "forward":
               if (1 < d) {
                 for (k = 0; k < d; k++) {
-                  g += r[this.rtl ? d - 1 - k : k], fb(this, n, g, f, a, b);
+                  g += r[this.rtl ? d - 1 - k : k], eb(this, n, g, f, a, b);
                 }
                 break;
               }
             default:
-              if (fb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
+              if (eb(this, n, r, f, a, b), m && 1 < e && p < e - 1) {
                 for (d = B(), g = this.U, f = r, k = Math.min(m + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((r = c[this.rtl ? e - 1 - p - h : p + h]) && !d[r]) {
                     d[r] = 1;
-                    const u = this.score ? this.score(c, f, p, r, h - 1) : eb(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), v = this.bidirectional && r > f;
-                    fb(this, l, v ? f : r, u, a, b, v ? r : f);
+                    const u = this.score ? this.score(c, f, p, r, h - 1) : db(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), v = this.bidirectional && r > f;
+                    eb(this, l, v ? f : r, u, a, b, v ? r : f);
                   }
                 }
               }
@@ -1891,10 +1891,10 @@ N.prototype.add = function(a, c, b, e) {
       c = "";
     }
   }
-  this.db && (c || this.commit_task.push({del:a}), this.T && gb(this));
+  this.db && (c || this.commit_task.push({del:a}), this.T && fb(this));
   return this;
 };
-function fb(a, c, b, e, d, f, g) {
+function eb(a, c, b, e, d, f, g) {
   let k = g ? a.ctx : a.map, h;
   if (!c[b] || g && !(h = c[b])[g]) {
     if (g ? (c = h || (c[b] = B()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = h = []), k = k[e] || (k[e] = []), !f || !k.includes(d)) {
@@ -1912,7 +1912,7 @@ function fb(a, c, b, e, d, f, g) {
     }
   }
 }
-function eb(a, c, b, e, d) {
+function db(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
 ;N.prototype.search = function(a, c, b) {
@@ -1923,11 +1923,11 @@ function eb(a, c, b, e, d) {
   d = p.length;
   c = c || (h ? 100 : 0);
   if (1 === d) {
-    return hb.call(this, p[0], "", c, k, h, q, l);
+    return gb.call(this, p[0], "", c, k, h, q, l);
   }
   f = this.depth && !1 !== f;
   if (2 === d && f && !g) {
-    return hb.call(this, p[0], p[1], c, k, h, q, l);
+    return gb.call(this, p[1], p[0], c, k, h, q, l);
   }
   let r = B(), u = 0, v;
   1 < d && f && (v = p[0], u = 1);
@@ -1941,8 +1941,8 @@ function eb(a, c, b, e, d) {
       for (let y, F; u < d; u++) {
         if ((F = p[u]) && !r[F]) {
           r[F] = 1;
-          y = await ib(w, F, v, 0, 0, !1, !1);
-          if (y = jb(y, e, g, m)) {
+          y = await hb(w, F, v, 0, 0, !1, !1);
+          if (y = ib(y, e, g, m)) {
             e = y;
             break;
           }
@@ -1950,14 +1950,14 @@ function eb(a, c, b, e, d) {
         }
         g && v && u === d - 1 && !e.length && (m = w.resolution, v = "", u = -1, r = B());
       }
-      return kb(e, m, c, k, g, n, h);
+      return jb(e, m, c, k, g, n, h);
     }();
   }
   for (let w, y; u < d; u++) {
     if ((y = p[u]) && !r[y]) {
       r[y] = 1;
-      w = ib(this, y, v, 0, 0, !1, !1);
-      if (w = jb(w, e, g, m)) {
+      w = hb(this, y, v, 0, 0, !1, !1);
+      if (w = ib(w, e, g, m)) {
         e = w;
         break;
       }
@@ -1965,9 +1965,9 @@ function eb(a, c, b, e, d) {
     }
     g && v && u === d - 1 && !e.length && (m = this.resolution, v = "", u = -1, r = B());
   }
-  return kb(e, m, c, k, g, n, h);
+  return jb(e, m, c, k, g, n, h);
 };
-function kb(a, c, b, e, d, f, g) {
+function jb(a, c, b, e, d, f, g) {
   let k = a.length, h = a;
   if (1 < k) {
     h = Fa(a, c, b, e, d, f, g);
@@ -1976,13 +1976,13 @@ function kb(a, c, b, e, d, f, g) {
   }
   return g ? h : new W(h);
 }
-function hb(a, c, b, e, d, f, g) {
-  a = ib(this, a, c, b, e, d, f, g);
+function gb(a, c, b, e, d, f, g) {
+  a = hb(this, a, c, b, e, d, f, g);
   return this.db ? a.then(function(k) {
     return d ? k || [] : new W(k);
   }) : a && a.length ? d ? Ia.call(this, a, b, e) : new W(a) : d ? [] : new W();
 }
-function jb(a, c, b, e) {
+function ib(a, c, b, e) {
   let d = [];
   if (a && a.length) {
     if (a.length <= e) {
@@ -2003,7 +2003,7 @@ function jb(a, c, b, e) {
     return d;
   }
 }
-function ib(a, c, b, e, d, f, g, k) {
+function hb(a, c, b, e, d, f, g, k) {
   let h;
   b && (h = a.bidirectional && c > b) && (h = b, b = c, c = h);
   if (a.db) {
@@ -2027,15 +2027,15 @@ function ib(a, c, b, e, d, f, g, k) {
         }
       }
     } else {
-      lb(this.map, a), this.depth && lb(this.ctx, a);
+      kb(this.map, a), this.depth && kb(this.ctx, a);
     }
     c || this.reg.delete(a);
   }
-  this.db && (this.commit_task.push({del:a}), this.T && gb(this));
+  this.db && (this.commit_task.push({del:a}), this.T && fb(this));
   this.cache && this.cache.remove(a);
   return this;
 };
-function lb(a, c) {
+function kb(a, c) {
   let b = 0;
   if (a.constructor === Array) {
     for (let e = 0, d, f; e < a.length; e++) {
@@ -2050,7 +2050,7 @@ function lb(a, c) {
     }
   } else {
     for (let e of a.entries()) {
-      const d = e[0], f = lb(e[1], c);
+      const d = e[0], f = kb(e[1], c);
       f ? b += f : a.delete(d);
     }
   }
@@ -2062,12 +2062,12 @@ function lb(a, c) {
   }
   if (a) {
     var b = E(a) ? a : a.preset;
-    b && (db[b] || console.warn("Preset not found: " + b), a = Object.assign({}, db[b], a));
+    b && (cb[b] || console.warn("Preset not found: " + b), a = Object.assign({}, cb[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = E(a.encoder) ? cb[a.encoder] : a.encode || a.encoder || Xa;
+  const e = !0 === b ? {depth:1} : b || {}, d = E(a.encoder) ? bb[a.encoder] : a.encode || a.encoder || {};
   this.encoder = d.encode ? d : "object" === typeof d ? new ja(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -2105,7 +2105,7 @@ t.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function gb(a) {
+function fb(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
@@ -2129,7 +2129,7 @@ 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 mb(a) {
+function lb(a) {
   let c = 0;
   if (a.constructor === Array) {
     for (let b = 0, e; b < a.length; b++) {
@@ -2137,7 +2137,7 @@ function mb(a) {
     }
   } else {
     for (const b of a.entries()) {
-      const e = b[0], d = mb(b[1]);
+      const e = b[0], d = lb(b[1]);
       d ? c += d : a.delete(e);
     }
   }
@@ -2147,8 +2147,8 @@ t.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  mb(this.map);
-  this.depth && mb(this.ctx);
+  lb(this.map);
+  this.depth && lb(this.ctx);
   return this;
 };
 t.searchCache = Va;
@@ -2213,10 +2213,10 @@ t.serialize = function(a = !0) {
   return a ? "function inject(index){" + c + b + e + "}" : c + b + e;
 };
 la(N.prototype);
-const nb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), ob = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
-function pb(a, c = {}) {
+const mb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), nb = ["map", "ctx", "tag", "reg", "cfg"], Y = B();
+function ob(a, c = {}) {
   if (!this) {
-    return new pb(a, c);
+    return new ob(a, c);
   }
   "object" === typeof a && (c = a, a = a.name);
   a || console.info("Default storage space was used, because a name was not passed.");
@@ -2227,7 +2227,7 @@ function pb(a, c = {}) {
   this.db = null;
   this.h = {};
 }
-t = pb.prototype;
+t = ob.prototype;
 t.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
@@ -2243,11 +2243,11 @@ t.open = function() {
   navigator.storage && navigator.storage.persist();
   Y[a.id] || (Y[a.id] = []);
   Y[a.id].push(a.field);
-  const c = nb.open(a.id, 1);
+  const c = mb.open(a.id, 1);
   c.onupgradeneeded = function() {
     const b = a.db = this.result;
-    for (let e = 0, d; e < ob.length; e++) {
-      d = ob[e];
+    for (let e = 0, d; e < nb.length; e++) {
+      d = nb[e];
       for (let f = 0, g; f < Y[a.id].length; f++) {
         g = Y[a.id][f], b.objectStoreNames.contains(d + ("reg" !== d ? g ? ":" + g : "" : "")) || b.createObjectStore(d + ("reg" !== d ? g ? ":" + g : "" : ""));
       }
@@ -2265,13 +2265,13 @@ t.close = function() {
   this.db = null;
 };
 t.destroy = function() {
-  const a = nb.deleteDatabase(this.id);
+  const a = mb.deleteDatabase(this.id);
   return Z(a);
 };
 t.clear = function() {
   const a = [];
-  for (let b = 0, e; b < ob.length; b++) {
-    e = ob[b];
+  for (let b = 0, e; b < nb.length; b++) {
+    e = nb[b];
     for (let d = 0, f; d < Y[this.id].length; d++) {
       f = Y[this.id][d], a.push(e + ("reg" !== e ? f ? ":" + f : "" : ""));
     }
@@ -2458,7 +2458,7 @@ t.commit = async function(a, c, b) {
     }
   }), a.map.clear(), a.ctx.clear(), a.tag && a.tag.clear(), a.store && a.store.clear(), a.document || a.reg.clear());
 };
-function rb(a, c, b) {
+function qb(a, c, b) {
   const e = a.value;
   let d, f = 0;
   for (let g = 0, k; g < e.length; g++) {
@@ -2487,17 +2487,17 @@ t.remove = function(a) {
   return Promise.all([this.transaction("map", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && rb(b, a);
+      b && qb(b, a);
     };
   }), this.transaction("ctx", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && rb(b, a);
+      b && qb(b, a);
     };
   }), this.transaction("tag", "readwrite", function(c) {
     c.openCursor().onsuccess = function() {
       const b = this.result;
-      b && rb(b, a, !0);
+      b && qb(b, a, !0);
     };
   }), this.transaction("reg", "readwrite", function(c) {
     for (let b = 0; b < a.length; b++) {
@@ -2516,6 +2516,6 @@ function Z(a, c) {
     a = null;
   });
 }
-;export default {Index:N, Charset:cb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:pb, Language:{}};
+;export default {Index:N, Charset:bb, Encoder:ja, Document:U, Worker:P, Resolver:W, IndexedDB:ob, Language:{}};
 
-export const Index=N;export const  Charset=cb;export const  Encoder=ja;export const  Document=U;export const  Worker=P;export const  Resolver=W;export const  IndexedDB=pb;export const  Language={};
\ No newline at end of file
+export const Index=N;export const  Charset=bb;export const  Encoder=ja;export const  Document=U;export const  Worker=P;export const  Resolver=W;export const  IndexedDB=ob;export const  Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.bundle.module.min.js b/dist/flexsearch.bundle.module.min.js
index 6b2f473..5367920 100644
--- a/dist/flexsearch.bundle.module.min.js
+++ b/dist/flexsearch.bundle.module.min.js
@@ -1,19 +1,19 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle/Module)
+ * FlexSearch.js v0.8.147 (Bundle/Module)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
  * https://github.com/nextapps-de/flexsearch
  */
 var t;function z(a,c,b){const e=typeof b,d=typeof a;if("undefined"!==e){if("undefined"!==d){if(b){if("function"===d&&e===d)return function(h){return a(b(h))};c=a.constructor;if(c===b.constructor){if(c===Array)return b.concat(a);if(c===Map){var f=new Map(b);for(var g of a)f.set(g[0],g[1]);return f}if(c===Set){g=new Set(b);for(f of a.values())g.add(f);return g}}}return a}return b}return"undefined"===d?c:a}function B(){return Object.create(null)}function E(a){return"string"===typeof a}
-function I(a){return"object"===typeof a}function aa(a){const c=[];for(const b of a.keys())c.push(b);return c}function ba(a,c){if(E(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function ca(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const da=/[^\p{L}\p{N}]+/u,ea=/(\d{3})/g,fa=/(\D)(\d{3})/g,ha=/(\d{3})(\D)/g,ia=/[\u0300-\u036f]/g;function J(a={}){if(!this||this.constructor!==J)return new J(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}t=J.prototype;
+function I(a){return"object"===typeof a}function aa(a){const c=[];for(const b of a.keys())c.push(b);return c}function J(a,c){if(E(c))a=a[c];else for(let b=0;a&&b<c.length;b++)a=a[c[b]];return a}function ba(a){let c=0;for(let b=0,e;b<a.length;b++)(e=a[b])&&c<e.length&&(c=e.length);return c};const ca=/[^\p{L}\p{N}]+/u,da=/(\d{3})/g,ea=/(\D)(\d{3})/g,fa=/(\d{3})(\D)/g,ha=/[\u0300-\u036f]/g;function ia(a={}){if(!this||this.constructor!==ia)return new ia(...arguments);if(arguments.length)for(a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}t=ia.prototype;
 t.assign=function(a){this.normalize=z(a.normalize,!0,this.normalize);let c=a.include,b=c||a.exclude||a.split,e;if(b||""===b){if("object"===typeof b&&b.constructor!==RegExp){let d="";e=!c;c||(d+="\\p{Z}");b.letter&&(d+="\\p{L}");b.number&&(d+="\\p{N}",e=!!c);b.symbol&&(d+="\\p{S}");b.punctuation&&(d+="\\p{P}");b.control&&(d+="\\p{C}");if(b=b.char)d+="object"===typeof b?b.join(""):b;try{this.split=new RegExp("["+(c?"^":"")+d+"]+","u")}catch(f){this.split=/\s+/}}else this.split=b,e=!1===b||2>"a1a".split(b).length;
-this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,da)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:z(b&&new Set(b),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=z((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=z((b=a.stemmer)&&new Map(b),
+this.numeric=z(a.numeric,e)}else{try{this.split=z(this.split,ca)}catch(d){this.split=/\s+/}this.numeric=z(a.numeric,z(this.numeric,!0))}this.prepare=z(a.prepare,null,this.prepare);this.finalize=z(a.finalize,null,this.finalize);b=a.filter;this.filter="function"===typeof b?b:z(b&&new Set(b),null,this.filter);this.dedupe=z(a.dedupe,!1,this.dedupe);this.matcher=z((b=a.matcher)&&new Map(b),null,this.matcher);this.mapper=z((b=a.mapper)&&new Map(b),null,this.mapper);this.stemmer=z((b=a.stemmer)&&new Map(b),
 null,this.stemmer);this.replacer=z(a.replacer,null,this.replacer);this.minlength=z(a.minlength,1,this.minlength);this.maxlength=z(a.maxlength,0,this.maxlength);this.rtl=z(a.rtl,!1,this.rtl);if(this.cache=b=z(a.cache,!0,this.cache))this.H=null,this.S="number"===typeof b?b:2E5,this.B=new Map,this.G=new Map,this.L=this.K=128;this.h="";this.M=null;this.A="";this.N=null;if(this.matcher)for(const d of this.matcher.keys())this.h+=(this.h?"|":"")+d;if(this.stemmer)for(const d of this.stemmer.keys())this.A+=
 (this.A?"|":"")+d;return this};t.addStemmer=function(a,c){this.stemmer||(this.stemmer=new Map);this.stemmer.set(a,c);this.A+=(this.A?"|":"")+a;this.N=null;this.cache&&K(this);return this};t.addFilter=function(a){"function"===typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a));this.cache&&K(this);return this};
 t.addMapper=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(1<a.length)return this.addMatcher(a,c);this.mapper||(this.mapper=new Map);this.mapper.set(a,c);this.cache&&K(this);return this};t.addMatcher=function(a,c){if("object"===typeof a)return this.addReplacer(a,c);if(2>a.length&&(this.dedupe||this.mapper))return this.addMapper(a,c);this.matcher||(this.matcher=new Map);this.matcher.set(a,c);this.h+=(this.h?"|":"")+a;this.M=null;this.cache&&K(this);return this};
 t.addReplacer=function(a,c){if("string"===typeof a)return this.addMatcher(a,c);this.replacer||(this.replacer=[]);this.replacer.push(a,c);this.cache&&K(this);return this};
-t.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.B.has(a))return this.B.get(a)}else this.H=setTimeout(K,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=ia?a.normalize("NFKD").replace(ia,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(fa,"$1 $2").replace(ha,"$1 $2").replace(ea,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
+t.encode=function(a){if(this.cache&&a.length<=this.K)if(this.H){if(this.B.has(a))return this.B.get(a)}else this.H=setTimeout(K,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=ha?a.normalize("NFKD").replace(ha,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(ea,"$1 $2").replace(fa,"$1 $2").replace(da,"$1 "));const c=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=
 [],e=this.split||""===this.split?a.split(this.split):a;for(let f=0,g,h;f<e.length;f++)if((g=h=e[f])&&!(g.length<this.minlength))if(c)b.push(g);else if(!this.filter||("function"===typeof this.filter?this.filter(g):!this.filter.has(g))){if(this.cache&&g.length<=this.L)if(this.H){var d=this.G.get(g);if(d||""===d){d&&b.push(d);continue}}else this.H=setTimeout(K,50,this);this.stemmer&&2<g.length&&(this.N||(this.N=new RegExp("(?!^)("+this.A+")$")),d=g,g=g.replace(this.N,k=>this.stemmer.get(k)),d!==g&&this.filter&&
 g.length>=this.minlength&&("function"===typeof this.filter?!this.filter(g):this.filter.has(g))&&(g=""));if(g&&(this.mapper||this.dedupe&&1<g.length)){d="";for(let k=0,l="",n,m;k<g.length;k++)n=g.charAt(k),n===l&&this.dedupe||((m=this.mapper&&this.mapper.get(n))||""===m?m===l&&this.dedupe||!(l=m)||(d+=m):d+=l=n);g=d}this.matcher&&1<g.length&&(this.M||(this.M=new RegExp("("+this.h+")","g")),g=g.replace(this.M,k=>this.matcher.get(k)));if(g&&this.replacer)for(d=0;g&&d<this.replacer.length;d+=2)g=g.replace(this.replacer[d],
 this.replacer[d+1]);this.cache&&h.length<=this.L&&(this.G.set(h,g),this.G.size>this.S&&(this.G.clear(),this.L=this.L/1.1|0));g&&b.push(g)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.K&&(this.B.set(a,b),this.B.size>this.S&&(this.B.clear(),this.K=this.K/1.1|0));return b};function K(a){a.H=null;a.B.clear();a.G.clear()};let M,ja;async function ka(a){a=a.data;var c=a.task;const b=a.id;let e=a.args;switch(c){case "init":ja=a.options||{};(c=a.factory)?(Function("return "+c)()(self),M=new self.FlexSearch.Index(ja),delete self.FlexSearch):M=new N(ja);postMessage({id:b});break;default:let d;"export"===c&&(e[1]?(e[0]=ja.export,e[2]=0,e[3]=1):e=null);"import"===c?e[0]&&(a=await ja.import.call(M,e[0]),M.import(e[0],a)):(d=e&&M[c].apply(M,e))&&d.then&&(d=await d);postMessage("search"===c?{id:b,msg:d}:{id:b})}};function la(a){ma.call(a,"add");ma.call(a,"append");ma.call(a,"search");ma.call(a,"update");ma.call(a,"remove")}let na,oa,pa;function qa(){na=pa=0}
@@ -31,26 +31,26 @@ if("includes"===e)return function(d){for(let f=0;f<c.index.length;f++)if(c.index
 R.prototype.destroy=function(){this.proxy=this.index=null};R.prototype.push=function(){};function S(a=8){if(!this||this.constructor!==S)return new S(a);this.index=B();this.h=[];this.size=0;32<a?(this.B=Ba,this.A=BigInt(a)):(this.B=Ca,this.A=a)}S.prototype.get=function(a){const c=this.index[this.B(a)];return c&&c.get(a)};S.prototype.set=function(a,c){var b=this.B(a);let e=this.index[b];e?(b=e.size,e.set(a,c),(b-=e.size)&&this.size++):(this.index[b]=e=new Map([[a,c]]),this.h.push(e),this.size++)};
 function T(a=8){if(!this||this.constructor!==T)return new T(a);this.index=B();this.h=[];this.size=0;32<a?(this.B=Ba,this.A=BigInt(a)):(this.B=Ca,this.A=a)}T.prototype.add=function(a){var c=this.B(a);let b=this.index[c];b?(c=b.size,b.add(a),(c-=b.size)&&this.size++):(this.index[c]=b=new Set([a]),this.h.push(b),this.size++)};t=S.prototype;t.has=T.prototype.has=function(a){const c=this.index[this.B(a)];return c&&c.has(a)};
 t.delete=T.prototype.delete=function(a){const c=this.index[this.B(a)];c&&c.delete(a)&&this.size--};t.clear=T.prototype.clear=function(){this.index=B();this.h=[];this.size=0};t.values=T.prototype.values=function*(){for(let a=0;a<this.h.length;a++)for(let c of this.h[a].values())yield c};t.keys=T.prototype.keys=function*(){for(let a=0;a<this.h.length;a++)for(let c of this.h[a].keys())yield c};t.entries=T.prototype.entries=function*(){for(let a=0;a<this.h.length;a++)for(let c of this.h[a].entries())yield c};
-function Ca(a){let c=2**this.A-1;if("number"==typeof a)return a&c;let b=0,e=this.A+1;for(let d=0;d<a.length;d++)b=(b*e^a.charCodeAt(d))&c;return 32===this.A?b+2**31:b}function Ba(a){let c=BigInt(2)**this.A-BigInt(1);var b=typeof a;if("bigint"===b)return a&c;if("number"===b)return BigInt(a)&c;b=BigInt(0);let e=this.A+BigInt(1);for(let d=0;d<a.length;d++)b=(b*e^BigInt(a.charCodeAt(d)))&c;return b};U.prototype.add=function(a,c,b){I(a)&&(c=a,a=ba(c,this.key));if(c&&(a||0===a)){if(!b&&this.reg.has(a))return this.update(a,c);for(let h=0,k;h<this.field.length;h++){k=this.D[h];var e=this.index.get(this.field[h]);if("function"===typeof k){var d=k(c);d&&e.add(a,d,!1,!0)}else if(d=k.I,!d||d(c))k.constructor===String?k=[""+k]:E(k)&&(k=[k]),Da(c,k,this.J,0,e,a,k[0],b)}if(this.tag)for(e=0;e<this.F.length;e++){var f=this.F[e];d=this.tag.get(this.R[e]);let h=B();if("function"===typeof f){if(f=f(c),!f)continue}else{var g=
-f.I;if(g&&!g(c))continue;f.constructor===String&&(f=""+f);f=ba(c,f)}if(d&&f){E(f)&&(f=[f]);for(let k=0,l,n;k<f.length;k++)if(l=f[k],!h[l]&&(h[l]=1,(g=d.get(l))?n=g:d.set(l,n=[]),!b||!n.includes(a))){if(n.length===2**31-1){g=new R(n);if(this.fastupdate)for(let m of this.reg.values())m.includes(n)&&(m[m.indexOf(n)]=g);d.set(l,n=g)}n.push(a);this.fastupdate&&((g=this.reg.get(a))?g.push(n):this.reg.set(a,[n]))}}}if(this.store&&(!b||!this.store.has(a))){let h;if(this.C){h=B();for(let k=0,l;k<this.C.length;k++){l=
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+function db(a,c,b,e,d){return b&&1<a?c+(e||0)<=a?b+(d||0):(a-1)/(c+(e||0))*(b+(d||0))+1|0:0};N.prototype.search=function(a,c,b){b||(!c&&I(a)?(b=a,a=""):I(c)&&(b=c,c=0));let e=[],d,f,g,h=0,k,l,n,m,q;b?(a=b.query||a,c=b.limit||c,h=b.offset||0,f=b.context,g=b.suggest,q=(k=!1!==b.resolve)&&b.enrich,n=b.boost,m=b.resolution,l=this.db&&b.tag):k=this.resolve;let p=this.encoder.encode(a);d=p.length;c=c||(k?100:0);if(1===d)return gb.call(this,p[0],"",c,h,k,q,l);f=this.depth&&!1!==f;if(2===d&&f&&!g)return gb.call(this,p[1],p[0],c,h,k,q,l);let r=B(),u=0,v;1<d&&f&&(v=p[0],u=1);m||0===m||(m=v?this.U:
+this.resolution);if(this.db){if(this.db.search&&(a=this.db.search(this,p,c,h,g,k,q,l),!1!==a))return a;const w=this;return async function(){for(let y,F;u<d;u++){if((F=p[u])&&!r[F]){r[F]=1;y=await hb(w,F,v,0,0,!1,!1);if(y=ib(y,e,g,m)){e=y;break}v&&(g&&y&&e.length||(v=F))}g&&v&&u===d-1&&!e.length&&(m=w.resolution,v="",u=-1,r=B())}return jb(e,m,c,h,g,n,k)}()}for(let w,y;u<d;u++){if((y=p[u])&&!r[y]){r[y]=1;w=hb(this,y,v,0,0,!1,!1);if(w=ib(w,e,g,m)){e=w;break}v&&(g&&w&&e.length||(v=y))}g&&v&&u===d-1&&
+!e.length&&(m=this.resolution,v="",u=-1,r=B())}return jb(e,m,c,h,g,n,k)};function jb(a,c,b,e,d,f,g){let h=a.length,k=a;if(1<h)k=Fa(a,c,b,e,d,f,g);else if(1===h)return g?Ia.call(null,a[0],b,e):new W(a[0]);return g?k:new W(k)}function gb(a,c,b,e,d,f,g){a=hb(this,a,c,b,e,d,f,g);return this.db?a.then(function(h){return d?h||[]:new W(h)}):a&&a.length?d?Ia.call(this,a,b,e):new W(a):d?[]:new W}
+function ib(a,c,b,e){let d=[];if(a&&a.length){if(a.length<=e){c.push(a);return}for(let f=0,g;f<e;f++)if(g=a[f])d[f]=g;if(d.length){c.push(d);return}}if(!b)return d}function hb(a,c,b,e,d,f,g,h){let k;b&&(k=a.bidirectional&&c>b)&&(k=b,b=c,c=k);if(a.db)return a.db.get(c,b,e,d,f,g,h);a=b?(a=a.ctx.get(b))&&a.get(c):a.map.get(c);return a};N.prototype.remove=function(a,c){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let e=0,d;e<b.length;e++){if(d=b[e])if(2>d.length)d.pop();else{const f=d.indexOf(a);f===b.length-1?d.pop():d.splice(f,1)}}else kb(this.map,a),this.depth&&kb(this.ctx,a);c||this.reg.delete(a)}this.db&&(this.commit_task.push({del:a}),this.T&&fb(this));this.cache&&this.cache.remove(a);return this};
+function kb(a,c){let b=0;if(a.constructor===Array)for(let e=0,d,f;e<a.length;e++){if((d=a[e])&&d.length)if(f=d.indexOf(c),0<=f){1<d.length?(d.splice(f,1),b++):delete a[e];break}else b++}else for(let e of a.entries()){const d=e[0],f=kb(e[1],c);f?b+=f:a.delete(d)}return b};function N(a,c){if(!this||this.constructor!==N)return new N(a);if(a){var b=E(a)?a:a.preset;b&&(a=Object.assign({},cb[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=E(a.encoder)?bb[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new ia(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
 this.score=a.score||null;(b=a.keystore||0)&&(this.keystore=b);this.map=b?new S(b):new Map;this.ctx=b?new S(b):new Map;this.reg=c||(this.fastupdate?b?new S(b):new Map:b?new T(b):new Set);this.U=e.resolution||3;this.rtl=d.rtl||a.rtl||!1;this.cache=(b=a.cache||null)&&new X(b);this.resolve=!1!==a.resolve;if(b=a.db)this.db=this.mount(b);this.T=!1!==a.commit;this.commit_task=[];this.commit_timer=null;this.priority=a.priority||4}t=N.prototype;
-t.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};t.commit=function(a,c){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,c)};t.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function gb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
+t.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};t.commit=function(a,c){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,c)};t.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function fb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
 t.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]);return this};t.append=function(a,c){return this.add(a,c,!0)};t.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)};t.update=function(a,c){const b=this,e=this.remove(a);return e&&e.then?e.then(()=>b.add(a,c)):this.add(a,c)};
-function mb(a){let c=0;if(a.constructor===Array)for(let b=0,e;b<a.length;b++)(e=a[b])&&(c+=e.length);else for(const b of a.entries()){const e=b[0],d=mb(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;mb(this.map);this.depth&&mb(this.ctx);return this};t.searchCache=Va;
+function lb(a){let c=0;if(a.constructor===Array)for(let b=0,e;b<a.length;b++)(e=a[b])&&(c+=e.length);else for(const b of a.entries()){const e=b[0],d=lb(b[1]);d?c+=d:a.delete(e)}return c}t.cleanup=function(){if(!this.fastupdate)return this;lb(this.map);this.depth&&lb(this.ctx);return this};t.searchCache=Va;
 t.export=function(a,c,b=0,e=0){let d,f;switch(e){case 0:d="reg";f=wa(this.reg);break;case 1:d="cfg";f=null;break;case 2:d="map";f=sa(this.map,this.reg.size);break;case 3:d="ctx";f=ua(this.ctx,this.reg.size);break;default:return}return ya.call(this,a,c,d,f,b,e)};
 t.import=function(a,c){if(c)switch("string"===typeof c&&(c=JSON.parse(c)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=xa(c,this.reg);break;case "map":this.map=ta(c,this.map);break;case "ctx":this.ctx=va(c,this.ctx)}};
-t.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=za(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};la(N.prototype);const nb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),ob=["map","ctx","tag","reg","cfg"],Y=B();
-function qb(a,c={}){if(!this)return new qb(a,c);"object"===typeof a&&(c=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=c.field?c.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=c.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}t=qb.prototype;t.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
-t.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const c=nb.open(a.id,1);c.onupgradeneeded=function(){const b=a.db=this.result;for(let e=0,d;e<ob.length;e++){d=ob[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],b.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||b.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(c,function(b){a.db=b;a.db.onversionchange=function(){a.close()}})};
-t.close=function(){this.db&&this.db.close();this.db=null};t.destroy=function(){const a=nb.deleteDatabase(this.id);return Z(a)};t.clear=function(){const a=[];for(let b=0,e;b<ob.length;b++){e=ob[b];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const c=this.db.transaction(a,"readwrite");for(let b=0;b<a.length;b++)c.objectStore(a[b]).clear();return Z(c)};
+t.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=za(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let h=za(g[1],f);h="new Map(["+h+"])";h='["'+d+'",'+h+"]";e+=(e?",":"")+h}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};la(N.prototype);const mb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),nb=["map","ctx","tag","reg","cfg"],Y=B();
+function pb(a,c={}){if(!this)return new pb(a,c);"object"===typeof a&&(c=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=c.field?c.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=c.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}t=pb.prototype;t.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+t.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist();Y[a.id]||(Y[a.id]=[]);Y[a.id].push(a.field);const c=mb.open(a.id,1);c.onupgradeneeded=function(){const b=a.db=this.result;for(let e=0,d;e<nb.length;e++){d=nb[e];for(let f=0,g;f<Y[a.id].length;f++)g=Y[a.id][f],b.objectStoreNames.contains(d+("reg"!==d?g?":"+g:"":""))||b.createObjectStore(d+("reg"!==d?g?":"+g:"":""))}};return a.db=Z(c,function(b){a.db=b;a.db.onversionchange=function(){a.close()}})};
+t.close=function(){this.db&&this.db.close();this.db=null};t.destroy=function(){const a=mb.deleteDatabase(this.id);return Z(a)};t.clear=function(){const a=[];for(let b=0,e;b<nb.length;b++){e=nb[b];for(let d=0,f;d<Y[this.id].length;d++)f=Y[this.id][d],a.push(e+("reg"!==e?f?":"+f:"":""))}const c=this.db.transaction(a,"readwrite");for(let b=0;b<a.length;b++)c.objectStore(a[b]).clear();return Z(c)};
 t.get=function(a,c,b=0,e=0,d=!0,f=!1){a=this.db.transaction((c?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((c?"ctx":"map")+(this.field?":"+this.field:"")).get(c?c+":"+a:a);const g=this;return Z(a).then(function(h){let k=[];if(!h||!h.length)return k;if(d){if(!b&&!e&&1===h.length)return h[0];for(let l=0,n;l<h.length;l++)if((n=h[l])&&n.length){if(e>=n.length){e-=n.length;continue}const m=b?e+Math.min(n.length-e,b):n.length;for(let q=e;q<m;q++)k.push(n[q]);e=0;if(k.length===b)break}return f?
 g.enrich(k):k}return h})};t.tag=function(a,c=0,b=0,e=!1){a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);const d=this;return Z(a).then(function(f){if(!f||!f.length||b>=f.length)return[];if(!c&&!b)return f;f=f.slice(b,b+c);return e?d.enrich(f):f})};
 t.enrich=function(a){"object"!==typeof a&&(a=[a]);const c=this.db.transaction("reg","readonly").objectStore("reg"),b=[];for(let e=0;e<a.length;e++)b[e]=Z(c.get(a[e]));return Promise.all(b).then(function(e){for(let d=0;d<e.length;d++)e[d]={id:a[d],doc:e[d]?JSON.parse(e[d]):null};return e})};t.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(c){return!!c})};t.search=null;t.info=function(){};
@@ -91,7 +90,7 @@ t.transaction=function(a,c,b){a+="reg"!==a?this.field?":"+this.field:"":"";let e
 t.commit=async function(a,c,b){if(c)await this.clear(),a.commit_task=[];else{let e=a.commit_task;a.commit_task=[];for(let d=0,f;d<e.length;d++)if(f=e[d],f.clear){await this.clear();c=!0;break}else e[d]=f.del;c||(b||(e=e.concat(aa(a.reg))),e.length&&await this.remove(e))}a.reg.size&&(await this.transaction("map","readwrite",function(e){for(const d of a.map){const f=d[0],g=d[1];g.length&&(c?e.put(g,f):e.get(f).onsuccess=function(){let h=this.result;var k;if(h&&h.length){const l=Math.max(h.length,g.length);
 for(let n=0,m,q;n<l;n++)if((q=g[n])&&q.length){if((m=h[n])&&m.length)for(k=0;k<q.length;k++)m.push(q[k]);else h[n]=q;k=1}}else h=g,k=1;k&&e.put(h,f)})}}),await this.transaction("ctx","readwrite",function(e){for(const d of a.ctx){const f=d[0],g=d[1];for(const h of g){const k=h[0],l=h[1];l.length&&(c?e.put(l,f+":"+k):e.get(f+":"+k).onsuccess=function(){let n=this.result;var m;if(n&&n.length){const q=Math.max(n.length,l.length);for(let p=0,r,u;p<q;p++)if((u=l[p])&&u.length){if((r=n[p])&&r.length)for(m=
 0;m<u.length;m++)r.push(u[m]);else n[p]=u;m=1}}else n=l,m=1;m&&e.put(n,f+":"+k)})}}}),a.store?await this.transaction("reg","readwrite",function(e){for(const d of a.store){const f=d[0],g=d[1];e.put("object"===typeof g?JSON.stringify(g):1,f)}}):a.bypass||await this.transaction("reg","readwrite",function(e){for(const d of a.reg.keys())e.put(1,d)}),a.tag&&await this.transaction("tag","readwrite",function(e){for(const d of a.tag){const f=d[0],g=d[1];g.length&&(e.get(f).onsuccess=function(){let h=this.result;
-h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function rb(a,c,b){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=b?e:e[g]){for(let k=0,l,n;k<c.length;k++)if(n=c[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(b)break}f?d&&a.update(e):a.delete();a.continue()}
-t.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&rb(b,a)}}),this.transaction("ctx","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&rb(b,a)}}),this.transaction("tag","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&rb(b,a,!0)}}),this.transaction("reg","readwrite",function(c){for(let b=0;b<a.length;b++)c.delete(a[b])})])};
-function Z(a,c){return new Promise((b,e)=>{a.onsuccess=a.oncomplete=function(){c&&c(this.result);c=null;b(this.result)};a.onerror=a.onblocked=e;a=null})};export default {Index:N,Charset:cb,Encoder:J,Document:U,Worker:P,Resolver:W,IndexedDB:qb,Language:{}};
-export const Index=N;export const Charset=cb;export const Encoder=J;export const Document=U;export const Worker=P;export const Resolver=W;export const IndexedDB=qb;export const Language={};
\ No newline at end of file
+h=h&&h.length?h.concat(g):g;e.put(h,f)})}}),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function qb(a,c,b){const e=a.value;let d,f=0;for(let g=0,h;g<e.length;g++){if(h=b?e:e[g]){for(let k=0,l,n;k<c.length;k++)if(n=c[k],l=h.indexOf(n),0<=l)if(d=1,1<h.length)h.splice(l,1);else{e[g]=[];break}f+=h.length}if(b)break}f?d&&a.update(e):a.delete();a.continue()}
+t.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a)}}),this.transaction("ctx","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a)}}),this.transaction("tag","readwrite",function(c){c.openCursor().onsuccess=function(){const b=this.result;b&&qb(b,a,!0)}}),this.transaction("reg","readwrite",function(c){for(let b=0;b<a.length;b++)c.delete(a[b])})])};
+function Z(a,c){return new Promise((b,e)=>{a.onsuccess=a.oncomplete=function(){c&&c(this.result);c=null;b(this.result)};a.onerror=a.onblocked=e;a=null})};export default {Index:N,Charset:bb,Encoder:ia,Document:U,Worker:P,Resolver:W,IndexedDB:pb,Language:{}};
+export const Index=N;export const Charset=bb;export const Encoder=ia;export const Document=U;export const Worker=P;export const Resolver=W;export const IndexedDB=pb;export const Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.compact.debug.js b/dist/flexsearch.compact.debug.js
index 68ac6e1..7efd114 100644
--- a/dist/flexsearch.compact.debug.js
+++ b/dist/flexsearch.compact.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle/Debug)
+ * FlexSearch.js v0.8.147 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -1038,7 +1038,7 @@ V.prototype.search = function(a, c, b, e) {
     if (l && F) {
       w = [];
       z = 0;
-      for (let G = 0, H, $a; G < l.length; G += 2) {
+      for (let G = 0, H, Za; G < l.length; G += 2) {
         H = this.tag.get(l[G]);
         if (!H) {
           if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), k) {
@@ -1047,7 +1047,7 @@ V.prototype.search = function(a, c, b, e) {
             return n ? d : new X(d);
           }
         }
-        if ($a = (H = H && H.get(l[G + 1])) && H.length) {
+        if (Za = (H = H && H.get(l[G + 1])) && H.length) {
           z++, w.push(H);
         } else if (!k) {
           return n ? d : new X(d);
@@ -1289,9 +1289,10 @@ x.cleanup = function() {
   return this;
 };
 x.get = function(a) {
-  return this.store.get(a);
+  return this.store.get(a) || null;
 };
 x.set = function(a, c) {
+  "object" === typeof a && (c = a, a = J(c, this.key));
   this.store.set(a, c);
   return this;
 };
@@ -1397,22 +1398,21 @@ Y.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-const Ma = {normalize:!1, numeric:!1, split:/\s+/};
-const Na = {normalize:!0};
-const Oa = {normalize:!0, dedupe:!0};
-const Pa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
-const Qa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Ra = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-const Sa = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
-var Ta = {W:Ma, V:Na, X:Oa, LatinBalance:{normalize:!0, dedupe:!0, mapper:Pa}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:Pa, matcher:Qa, replacer:Ra}, LatinExtra:{normalize:!0, dedupe:!0, mapper:Pa, replacer:Ra.concat([/(?!^)[aeo]/g, ""]), matcher:Qa}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
+const Ma = {normalize:!1, numeric:!1};
+const Na = {};
+const Oa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
+const Pa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Qa = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+const Ra = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
+var Sa = {W:Ma, V:Na, X:Na, LatinBalance:{dedupe:!0, mapper:Oa}, LatinAdvanced:{dedupe:!0, mapper:Oa, matcher:Pa, replacer:Qa}, LatinExtra:{dedupe:!0, mapper:Oa, replacer:Qa.concat([/(?!^)[aeo]/g, ""]), matcher:Pa}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (let b = 0; b < a.length; b++) {
     var c = a[b];
-    let e = c.charAt(0), d = Sa[e];
-    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Sa[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
+    let e = c.charAt(0), d = Ra[e];
+    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Ra[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
     }
     a[b] = e;
   }
-}}, LatinExact:Ma, LatinDefault:Na, LatinSimple:Oa};
-const Ua = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+}}, LatinExact:Ma, LatinDefault:Na, LatinSimple:Na};
+const Ta = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 O.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -1425,7 +1425,7 @@ O.prototype.add = function(a, c, b, e) {
         let q = c[this.rtl ? e - 1 - p : p];
         var d = q.length;
         if (d && (n || !m[q])) {
-          var f = this.score ? this.score(c, q, p, null, 0) : Va(r, e, p), g = "";
+          var f = this.score ? this.score(c, q, p, null, 0) : Ua(r, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
@@ -1433,7 +1433,7 @@ O.prototype.add = function(a, c, b, e) {
                   for (f = d; f > t; f--) {
                     g = q.substring(t, f);
                     u = this.rtl ? d - 1 - t : t;
-                    var k = this.score ? this.score(c, q, p, g, u) : Va(r, e, p, d, u);
+                    var k = this.score ? this.score(c, q, p, g, u) : Ua(r, e, p, d, u);
                     Z(this, m, g, k, a, b);
                   }
                 }
@@ -1444,7 +1444,7 @@ O.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = q[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, q, p, g, k) : Va(r, e, p, d, k);
+                  var h = this.score ? this.score(c, q, p, g, k) : Ua(r, e, p, d, k);
                   Z(this, m, g, h, a, b);
                 }
                 g = "";
@@ -1461,7 +1461,7 @@ O.prototype.add = function(a, c, b, e) {
                 for (d = C(), g = this.S, f = q, k = Math.min(n + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((q = c[this.rtl ? e - 1 - p - h : p + h]) && !d[q]) {
                     d[q] = 1;
-                    const t = this.score ? this.score(c, f, p, q, h - 1) : Va(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), u = this.bidirectional && q > f;
+                    const t = this.score ? this.score(c, f, p, q, h - 1) : Ua(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), u = this.bidirectional && q > f;
                     Z(this, l, u ? f : q, t, a, b, u ? q : f);
                   }
                 }
@@ -1480,7 +1480,7 @@ function Z(a, c, b, e, d, f, g) {
     g ? (c = h || (c[b] = C()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = []), k = k[e] || (k[e] = []), f && k.includes(d) || (k.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(k) : a.reg.set(d, [k])));
   }
 }
-function Va(a, c, b, e, d) {
+function Ua(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
 ;O.prototype.search = function(a, c, b) {
@@ -1501,11 +1501,11 @@ function Va(a, c, b, e, d) {
   b = a.length;
   c = c || (k ? 100 : 0);
   if (1 === b) {
-    return g = c, (c = Wa(this, a[0], "")) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Va(this, a[0], "")) && c.length ? za.call(this, c, g, d) : [];
   }
   f = this.depth && !1 !== f;
   if (2 === b && f && !g) {
-    return g = c, (c = Wa(this, a[0], a[1])) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Va(this, a[1], a[0])) && c.length ? za.call(this, c, g, d) : [];
   }
   k = C();
   let l = 0;
@@ -1517,7 +1517,7 @@ function Va(a, c, b, e, d) {
   for (let q, t; l < b; l++) {
     if ((t = a[l]) && !k[t]) {
       k[t] = 1;
-      q = Wa(this, t, m);
+      q = Va(this, t, m);
       a: {
         f = q;
         var n = e, r = g, p = h;
@@ -1563,7 +1563,7 @@ function Va(a, c, b, e, d) {
   }
   return g;
 };
-function Wa(a, c, b) {
+function Va(a, c, b) {
   let e;
   b && (e = a.bidirectional && c > b) && (e = b, b = c, c = e);
   a = b ? (a = a.ctx.get(b)) && a.get(c) : a.map.get(c);
@@ -1584,14 +1584,14 @@ function Wa(a, c, b) {
         }
       }
     } else {
-      Xa(this.map, a), this.depth && Xa(this.ctx, a);
+      Wa(this.map, a), this.depth && Wa(this.ctx, a);
     }
     c || this.reg.delete(a);
   }
   this.cache && this.cache.remove(a);
   return this;
 };
-function Xa(a, c) {
+function Wa(a, c) {
   let b = 0;
   if (a.constructor === Array) {
     for (let e = 0, d, f; e < a.length; e++) {
@@ -1606,7 +1606,7 @@ function Xa(a, c) {
     }
   } else {
     for (let e of a.entries()) {
-      const d = e[0], f = Xa(e[1], c);
+      const d = e[0], f = Wa(e[1], c);
       f ? b += f : a.delete(d);
     }
   }
@@ -1618,12 +1618,12 @@ function Xa(a, c) {
   }
   if (a) {
     var b = D(a) ? a : a.preset;
-    b && (Ua[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ua[b], a));
+    b && (Ta[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ta[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Ta[a.encoder] : a.encode || a.encoder || Na;
+  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Sa[a.encoder] : a.encode || a.encoder || {};
   this.encoder = d.encode ? d : "object" === typeof d ? new K(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -1659,7 +1659,7 @@ x.update = function(a, c) {
   const b = this, e = this.remove(a);
   return e && e.then ? e.then(() => b.add(a, c)) : this.add(a, c);
 };
-function Ya(a) {
+function Xa(a) {
   let c = 0;
   if (a.constructor === Array) {
     for (let b = 0, e; b < a.length; b++) {
@@ -1667,7 +1667,7 @@ function Ya(a) {
     }
   } else {
     for (const b of a.entries()) {
-      const e = b[0], d = Ya(b[1]);
+      const e = b[0], d = Xa(b[1]);
       d ? c += d : a.delete(e);
     }
   }
@@ -1677,8 +1677,8 @@ x.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  Ya(this.map);
-  this.depth && Ya(this.ctx);
+  Xa(this.map);
+  this.depth && Xa(this.ctx);
   return this;
 };
 x.searchCache = La;
@@ -1744,9 +1744,9 @@ x.serialize = function(a = !0) {
 };
 ia(O.prototype);
 C();
-const Za = {Index:O, Charset:Ta, Encoder:K, Document:V, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, ab = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
-let bb;
-(bb = ab.define) && bb.amd ? bb([], function() {
-  return Za;
-}) : "object" === typeof ab.exports ? ab.exports = Za : ab.FlexSearch = Za;
+const Ya = {Index:O, Charset:Sa, Encoder:K, Document:V, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, $a = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
+let ab;
+(ab = $a.define) && ab.amd ? ab([], function() {
+  return Ya;
+}) : "object" === typeof $a.exports ? $a.exports = Ya : $a.FlexSearch = Ya;
 }(this||self));
diff --git a/dist/flexsearch.compact.min.js b/dist/flexsearch.compact.min.js
index 78b156e..40cc71a 100644
--- a/dist/flexsearch.compact.min.js
+++ b/dist/flexsearch.compact.min.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle)
+ * FlexSearch.js v0.8.147 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -37,7 +37,7 @@ function Ea(a,c,b,e,d){const f=[],g=C();let k=0;for(let h=0,l;h<a.length;h++)if(
 function Ga(a,c,b,e){const d=[];a=new Set(a.flat().flat());for(let f=0,g,k=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))if(b)b--;else if(e){if(d.push(l),d.length===c)return d}else if(d[f]||(d[f]=[]),d[f].push(l),++k===c)return d;return d};function X(a){if(!this||this.constructor!==X)return new X(a);if(a&&a.index)return a.resolve=!1,this.index=a.index,this.h=a.boost||0,this.result=a.index.search(a).result,this;this.index=null;this.result=a||[];this.h=0}X.prototype.limit=function(a){if(this.result.length){const c=[];for(let b=0,e;b<this.result.length;b++)if(e=this.result[b])if(e.length<=a){if(c[b]=e,a-=e.length,!a)break}else{c[b]=e.slice(0,a);break}this.result=c}return this};
 X.prototype.offset=function(a){if(this.result.length){const c=[];for(let b=0,e;b<this.result.length;b++)if(e=this.result[b])e.length<=a?a-=e.length:(c[b]=e.slice(a),a=0);this.result=c}return this};X.prototype.boost=function(a){this.h+=a;return this};X.prototype.resolve=function(a,c,b){const e=this.result,d=this.index;this.result=this.index=null;return e.length?("object"===typeof a&&(b=a.enrich,c=a.offset,a=a.limit),za.call(d,e,a||100,c,b)):e};C();V.prototype.search=function(a,c,b,e){b||(!c&&H(a)?(b=a,a=""):H(c)&&(b=c,c=0));let d=[];var f=[];let g;let k,h,l;let m=0,n=!0,r;if(b){b.constructor===Array&&(b={index:b});a=b.query||a;var p=b.pluck;var q=b.merge;h=p||b.field||(h=b.index)&&(h.index?null:h);l=this.tag&&b.tag;k=b.suggest;n=!0;r=(g=this.store&&b.enrich&&n)&&b.highlight;c=b.limit||c;var t=b.offset||0;c||(c=100);if(l){l.constructor!==Array&&(l=[l]);var u=[];for(let y=0,v;y<l.length;y++)if(v=l[y],v.field&&v.tag){var w=v.tag;if(w.constructor===
 Array)for(var z=0;z<w.length;z++)u.push(v.field,w[z]);else u.push(v.field,w)}else{w=Object.keys(v);for(let E=0,F,A;E<w.length;E++)if(F=w[E],A=v[F],A.constructor===Array)for(z=0;z<A.length;z++)u.push(F,A[z]);else u.push(F,A)}l=u;if(!a){f=[];if(u.length)for(p=0;p<u.length;p+=2)q=Ha.call(this,u[p],u[p+1],c,t,g),d.push({field:u[p],tag:u[p+1],result:q});return f.length?Promise.all(f).then(function(y){for(let v=0;v<y.length;v++)d[v].result=y[v];return d}):d}}h&&h.constructor!==Array&&(h=[h])}h||(h=this.field);
-u=!e&&(this.worker||this.db)&&[];for(let y=0,v,E,F;y<h.length;y++){E=h[y];let A;D(E)||(A=E,E=A.field,a=A.query||a,c=A.limit||c,t=A.offset||t,k=A.suggest||k,g=this.store&&(A.enrich||g));if(e)v=e[y];else if(w=A||b,z=this.index.get(E),l&&(w.enrich=!1),u){u[y]=z.search(a,c,w);w&&g&&(w.enrich=g);continue}else v=z.search(a,c,w),w&&g&&(w.enrich=g);F=v&&(n?v.length:v.result.length);if(l&&F){w=[];z=0;for(let J=0,G,Za;J<l.length;J+=2){G=this.tag.get(l[J]);if(!G)if(k)continue;else return n?d:new X(d);if(Za=
+u=!e&&(this.worker||this.db)&&[];for(let y=0,v,E,F;y<h.length;y++){E=h[y];let A;D(E)||(A=E,E=A.field,a=A.query||a,c=A.limit||c,t=A.offset||t,k=A.suggest||k,g=this.store&&(A.enrich||g));if(e)v=e[y];else if(w=A||b,z=this.index.get(E),l&&(w.enrich=!1),u){u[y]=z.search(a,c,w);w&&g&&(w.enrich=g);continue}else v=z.search(a,c,w),w&&g&&(w.enrich=g);F=v&&(n?v.length:v.result.length);if(l&&F){w=[];z=0;for(let J=0,G,Ya;J<l.length;J+=2){G=this.tag.get(l[J]);if(!G)if(k)continue;else return n?d:new X(d);if(Ya=
 (G=G&&G.get(l[J+1]))&&G.length)z++,w.push(G);else if(!k)return n?d:new X(d)}if(z){v=ya(v,w);F=v.length;if(!F&&!k)return n?v:new X(v);z--}}if(F)f[m]=E,d.push(v),m++;else if(1===h.length)return n?d:new X(d)}if(u){const y=this;return Promise.all(u).then(function(v){return v.length?y.search(a,c,b,v):v})}if(!m)return n?d:new X(d);if(p&&(!g||!this.store))return d[0];u=[];for(t=0;t<f.length;t++){e=d[t];g&&e.length&&"undefined"===typeof e[0].doc&&(e=W.call(this,e));if(p)return n?e:new X(e);d[t]={field:f[t],
 result:e}}return q?Ia(d,c):r?Ja(d,a,this.index,this.field,this.C,r):d};
 function Ja(a,c,b,e,d,f){let g,k,h;for(let m=0,n,r,p,q;m<a.length;m++){let t=a[m].result;n=a[m].field;p=b.get(n);r=p.encoder;h=p.tokenize;q=d[e.indexOf(n)];r!==g&&(g=r,k=g.encode(c));for(let u=0;u<t.length;u++){let w="";var l=I(t[u].doc,q);let z=g.encode(l);l=l.split(g.split);for(let y=0,v,E;y<z.length;y++){v=z[y];E=l[y];if(!v||!E)continue;let F;for(let A=0,J;A<k.length;A++)if(J=k[A],"strict"===h){if(v===J){w+=(w?" ":"")+f.replace("$1",E);F=!0;break}}else{const G=v.indexOf(J);if(-1<G){w+=(w?" ":"")+
@@ -47,18 +47,18 @@ a,g):a,b.set(f,new O(g,this.reg)),g.custom?this.C[d]=g.custom:(this.C[d]=Ka(f,th
 typeof b&&(b=[b]),b.length){this.tag=new Map;this.B=[];this.T=[];for(let d=0,f,g;d<b.length;d++){f=b[d];g=f.field||f;if(!g)throw Error("The tag field from the document descriptor is undefined.");f.custom?this.B[d]=f.custom:(this.B[d]=Ka(g,this.J),f.filter&&("string"===typeof this.B[d]&&(this.B[d]=new String(this.B[d])),this.B[d].I=f.filter));this.T[d]=g;this.tag.set(g,new Map)}}}
 function Ka(a,c){const b=a.split(":");let e=0;for(let d=0;d<b.length;d++)a=b[d],"]"===a[a.length-1]&&(a=a.substring(0,a.length-2))&&(c[e]=!0),a&&(b[e++]=a);e<b.length&&(b.length=e);return 1<e?b:b[0]}x=V.prototype;x.append=function(a,c){return this.add(a,c,!0)};x.update=function(a,c){return this.remove(a).add(a,c)};
 x.remove=function(a){H(a)&&(a=I(a,this.key));for(var c of this.index.values())c.remove(a,!0);if(this.reg.has(a)){if(this.tag&&!this.fastupdate)for(let b of this.tag.values())for(let e of b){c=e[0];const d=e[1],f=d.indexOf(a);-1<f&&(1<d.length?d.splice(f,1):b.delete(c))}this.store&&this.store.delete(a);this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
-x.clear=function(){const a=[];for(const c of this.index.values()){const b=c.clear();b.then&&a.push(b)}if(this.tag)for(const c of this.tag.values())c.clear();this.store&&this.store.clear();this.cache&&this.cache.clear();return a.length?Promise.all(a):this};x.contain=function(a){return this.reg.has(a)};x.cleanup=function(){for(const a of this.index.values())a.cleanup();return this};x.get=function(a){return this.store.get(a)};x.set=function(a,c){this.store.set(a,c);return this};x.searchCache=La;
+x.clear=function(){const a=[];for(const c of this.index.values()){const b=c.clear();b.then&&a.push(b)}if(this.tag)for(const c of this.tag.values())c.clear();this.store&&this.store.clear();this.cache&&this.cache.clear();return a.length?Promise.all(a):this};x.contain=function(a){return this.reg.has(a)};x.cleanup=function(){for(const a of this.index.values())a.cleanup();return this};x.get=function(a){return this.store.get(a)||null};
+x.set=function(a,c){"object"===typeof a&&(c=a,a=I(c,this.key));this.store.set(a,c);return this};x.searchCache=La;
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+function Wa(a,c){let b=0;if(a.constructor===Array)for(let e=0,d,f;e<a.length;e++){if((d=a[e])&&d.length)if(f=d.indexOf(c),0<=f){1<d.length?(d.splice(f,1),b++):delete a[e];break}else b++}else for(let e of a.entries()){const d=e[0],f=Wa(e[1],c);f?b+=f:a.delete(d)}return b};function O(a,c){if(!this||this.constructor!==O)return new O(a);if(a){var b=D(a)?a:a.preset;b&&(a=Object.assign({},Ta[b],a))}else a={};b=a.context;const e=!0===b?{depth:1}:b||{},d=D(a.encoder)?Sa[a.encoder]:a.encode||a.encoder||{};this.encoder=d.encode?d:"object"===typeof d?new K(d):{encode:d};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&e.depth||0;this.bidirectional=!1!==e.bidirectional;this.fastupdate=!!a.fastupdate;
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diff --git a/dist/flexsearch.compact.module.debug.js b/dist/flexsearch.compact.module.debug.js
index 85a03a0..e6c0495 100644
--- a/dist/flexsearch.compact.module.debug.js
+++ b/dist/flexsearch.compact.module.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle/Debug)
+ * FlexSearch.js v0.8.147 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -1037,7 +1037,7 @@ V.prototype.search = function(a, c, b, e) {
     if (l && F) {
       w = [];
       z = 0;
-      for (let G = 0, H, Xa; G < l.length; G += 2) {
+      for (let G = 0, H, Wa; G < l.length; G += 2) {
         H = this.tag.get(l[G]);
         if (!H) {
           if (console.warn("Tag '" + l[G] + ":" + l[G + 1] + "' will be skipped because there is no field '" + l[G] + "'."), k) {
@@ -1046,7 +1046,7 @@ V.prototype.search = function(a, c, b, e) {
             return n ? d : new X(d);
           }
         }
-        if (Xa = (H = H && H.get(l[G + 1])) && H.length) {
+        if (Wa = (H = H && H.get(l[G + 1])) && H.length) {
           z++, w.push(H);
         } else if (!k) {
           return n ? d : new X(d);
@@ -1288,9 +1288,10 @@ x.cleanup = function() {
   return this;
 };
 x.get = function(a) {
-  return this.store.get(a);
+  return this.store.get(a) || null;
 };
 x.set = function(a, c) {
+  "object" === typeof a && (c = a, a = J(c, this.key));
   this.store.set(a, c);
   return this;
 };
@@ -1396,22 +1397,21 @@ Y.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-const Ma = {normalize:!1, numeric:!1, split:/\s+/};
-const Na = {normalize:!0};
-const Oa = {normalize:!0, dedupe:!0};
-const Pa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
-const Qa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Ra = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-const Sa = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
-var Ta = {W:Ma, V:Na, X:Oa, LatinBalance:{normalize:!0, dedupe:!0, mapper:Pa}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:Pa, matcher:Qa, replacer:Ra}, LatinExtra:{normalize:!0, dedupe:!0, mapper:Pa, replacer:Ra.concat([/(?!^)[aeo]/g, ""]), matcher:Qa}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
+const Ma = {normalize:!1, numeric:!1};
+const Na = {};
+const Oa = new Map([["b", "p"], ["v", "f"], ["w", "f"], ["z", "s"], ["x", "s"], ["d", "t"], ["n", "m"], ["c", "k"], ["g", "k"], ["j", "k"], ["q", "k"], ["i", "e"], ["y", "e"], ["u", "o"]]);
+const Pa = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Qa = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+const Ra = {a:"", e:"", i:"", o:"", u:"", y:"", b:1, f:1, p:1, v:1, c:2, g:2, j:2, k:2, q:2, s:2, x:2, z:2, "\u00df":2, d:3, t:3, l:4, m:5, n:5, r:6};
+var Sa = {W:Ma, V:Na, X:Na, LatinBalance:{dedupe:!0, mapper:Oa}, LatinAdvanced:{dedupe:!0, mapper:Oa, matcher:Pa, replacer:Qa}, LatinExtra:{dedupe:!0, mapper:Oa, replacer:Qa.concat([/(?!^)[aeo]/g, ""]), matcher:Pa}, LatinSoundex:{dedupe:!1, include:{letter:!0}, finalize:function(a) {
   for (let b = 0; b < a.length; b++) {
     var c = a[b];
-    let e = c.charAt(0), d = Sa[e];
-    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Sa[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
+    let e = c.charAt(0), d = Ra[e];
+    for (let f = 1, g; f < c.length && (g = c.charAt(f), "h" === g || "w" === g || !(g = Ra[g]) || g === d || (e += g, d = g, 4 !== e.length)); f++) {
     }
     a[b] = e;
   }
-}}, LatinExact:Ma, LatinDefault:Na, LatinSimple:Oa};
-const Ua = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+}}, LatinExact:Ma, LatinDefault:Na, LatinSimple:Na};
+const Ta = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 O.prototype.add = function(a, c, b, e) {
   if (c && (a || 0 === a)) {
     if (!e && !b && this.reg.has(a)) {
@@ -1424,7 +1424,7 @@ O.prototype.add = function(a, c, b, e) {
         let q = c[this.rtl ? e - 1 - p : p];
         var d = q.length;
         if (d && (n || !m[q])) {
-          var f = this.score ? this.score(c, q, p, null, 0) : Va(r, e, p), g = "";
+          var f = this.score ? this.score(c, q, p, null, 0) : Ua(r, e, p), g = "";
           switch(this.tokenize) {
             case "full":
               if (2 < d) {
@@ -1432,7 +1432,7 @@ O.prototype.add = function(a, c, b, e) {
                   for (f = d; f > t; f--) {
                     g = q.substring(t, f);
                     u = this.rtl ? d - 1 - t : t;
-                    var k = this.score ? this.score(c, q, p, g, u) : Va(r, e, p, d, u);
+                    var k = this.score ? this.score(c, q, p, g, u) : Ua(r, e, p, d, u);
                     Z(this, m, g, k, a, b);
                   }
                 }
@@ -1443,7 +1443,7 @@ O.prototype.add = function(a, c, b, e) {
               if (1 < d) {
                 for (k = d - 1; 0 < k; k--) {
                   g = q[this.rtl ? d - 1 - k : k] + g;
-                  var h = this.score ? this.score(c, q, p, g, k) : Va(r, e, p, d, k);
+                  var h = this.score ? this.score(c, q, p, g, k) : Ua(r, e, p, d, k);
                   Z(this, m, g, h, a, b);
                 }
                 g = "";
@@ -1460,7 +1460,7 @@ O.prototype.add = function(a, c, b, e) {
                 for (d = C(), g = this.S, f = q, k = Math.min(n + 1, this.rtl ? p + 1 : e - p), d[f] = 1, h = 1; h < k; h++) {
                   if ((q = c[this.rtl ? e - 1 - p - h : p + h]) && !d[q]) {
                     d[q] = 1;
-                    const t = this.score ? this.score(c, f, p, q, h - 1) : Va(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), u = this.bidirectional && q > f;
+                    const t = this.score ? this.score(c, f, p, q, h - 1) : Ua(g + (e / 2 > g ? 0 : 1), e, p, k - 1, h - 1), u = this.bidirectional && q > f;
                     Z(this, l, u ? f : q, t, a, b, u ? q : f);
                   }
                 }
@@ -1479,7 +1479,7 @@ function Z(a, c, b, e, d, f, g) {
     g ? (c = h || (c[b] = C()), c[g] = 1, (h = k.get(g)) ? k = h : k.set(g, k = new Map())) : c[b] = 1, (h = k.get(b)) ? k = h : k.set(b, k = []), k = k[e] || (k[e] = []), f && k.includes(d) || (k.push(d), a.fastupdate && ((c = a.reg.get(d)) ? c.push(k) : a.reg.set(d, [k])));
   }
 }
-function Va(a, c, b, e, d) {
+function Ua(a, c, b, e, d) {
   return b && 1 < a ? c + (e || 0) <= a ? b + (d || 0) : (a - 1) / (c + (e || 0)) * (b + (d || 0)) + 1 | 0 : 0;
 }
 ;O.prototype.search = function(a, c, b) {
@@ -1500,11 +1500,11 @@ function Va(a, c, b, e, d) {
   b = a.length;
   c = c || (k ? 100 : 0);
   if (1 === b) {
-    return g = c, (c = Wa(this, a[0], "")) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Va(this, a[0], "")) && c.length ? za.call(this, c, g, d) : [];
   }
   f = this.depth && !1 !== f;
   if (2 === b && f && !g) {
-    return g = c, (c = Wa(this, a[0], a[1])) && c.length ? za.call(this, c, g, d) : [];
+    return g = c, (c = Va(this, a[1], a[0])) && c.length ? za.call(this, c, g, d) : [];
   }
   k = C();
   let l = 0;
@@ -1516,7 +1516,7 @@ function Va(a, c, b, e, d) {
   for (let q, t; l < b; l++) {
     if ((t = a[l]) && !k[t]) {
       k[t] = 1;
-      q = Wa(this, t, m);
+      q = Va(this, t, m);
       a: {
         f = q;
         var n = e, r = g, p = h;
@@ -1562,7 +1562,7 @@ function Va(a, c, b, e, d) {
   }
   return g;
 };
-function Wa(a, c, b) {
+function Va(a, c, b) {
   let e;
   b && (e = a.bidirectional && c > b) && (e = b, b = c, c = e);
   a = b ? (a = a.ctx.get(b)) && a.get(c) : a.map.get(c);
@@ -1583,14 +1583,14 @@ function Wa(a, c, b) {
         }
       }
     } else {
-      Ya(this.map, a), this.depth && Ya(this.ctx, a);
+      Xa(this.map, a), this.depth && Xa(this.ctx, a);
     }
     c || this.reg.delete(a);
   }
   this.cache && this.cache.remove(a);
   return this;
 };
-function Ya(a, c) {
+function Xa(a, c) {
   let b = 0;
   if (a.constructor === Array) {
     for (let e = 0, d, f; e < a.length; e++) {
@@ -1605,7 +1605,7 @@ function Ya(a, c) {
     }
   } else {
     for (let e of a.entries()) {
-      const d = e[0], f = Ya(e[1], c);
+      const d = e[0], f = Xa(e[1], c);
       f ? b += f : a.delete(d);
     }
   }
@@ -1617,12 +1617,12 @@ function Ya(a, c) {
   }
   if (a) {
     var b = D(a) ? a : a.preset;
-    b && (Ua[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ua[b], a));
+    b && (Ta[b] || console.warn("Preset not found: " + b), a = Object.assign({}, Ta[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Ta[a.encoder] : a.encode || a.encoder || Na;
+  const e = !0 === b ? {depth:1} : b || {}, d = D(a.encoder) ? Sa[a.encoder] : a.encode || a.encoder || {};
   this.encoder = d.encode ? d : "object" === typeof d ? new K(d) : {encode:d};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -1658,7 +1658,7 @@ x.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 Za(a) {
+function Ya(a) {
   let c = 0;
   if (a.constructor === Array) {
     for (let b = 0, e; b < a.length; b++) {
@@ -1666,7 +1666,7 @@ function Za(a) {
     }
   } else {
     for (const b of a.entries()) {
-      const e = b[0], d = Za(b[1]);
+      const e = b[0], d = Ya(b[1]);
       d ? c += d : a.delete(e);
     }
   }
@@ -1676,8 +1676,8 @@ x.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  Za(this.map);
-  this.depth && Za(this.ctx);
+  Ya(this.map);
+  this.depth && Ya(this.ctx);
   return this;
 };
 x.searchCache = La;
@@ -1743,6 +1743,6 @@ x.serialize = function(a = !0) {
 };
 ia(O.prototype);
 C();
-export default {Index:O, Charset:Ta, Encoder:K, Document:V, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
+export default {Index:O, Charset:Sa, Encoder:K, Document:V, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
 
-export const Index=O;export const  Charset=Ta;export const  Encoder=K;export const  Document=V;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
+export const Index=O;export const  Charset=Sa;export const  Encoder=K;export const  Document=V;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.compact.module.min.js b/dist/flexsearch.compact.module.min.js
index 6a02807..bda1152 100644
--- a/dist/flexsearch.compact.module.min.js
+++ b/dist/flexsearch.compact.module.min.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle)
+ * FlexSearch.js v0.8.147 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -37,7 +37,7 @@ function Ea(a,c,b,e,d){const f=[],g=C();let k=0;for(let h=0,l;h<a.length;h++)if(
 function Ga(a,c,b,e){const d=[];a=new Set(a.flat().flat());for(let f=0,g,k=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))if(b)b--;else if(e){if(d.push(l),d.length===c)return d}else if(d[f]||(d[f]=[]),d[f].push(l),++k===c)return d;return d};function X(a){if(!this||this.constructor!==X)return new X(a);if(a&&a.index)return a.resolve=!1,this.index=a.index,this.h=a.boost||0,this.result=a.index.search(a).result,this;this.index=null;this.result=a||[];this.h=0}X.prototype.limit=function(a){if(this.result.length){const c=[];for(let b=0,e;b<this.result.length;b++)if(e=this.result[b])if(e.length<=a){if(c[b]=e,a-=e.length,!a)break}else{c[b]=e.slice(0,a);break}this.result=c}return this};
 X.prototype.offset=function(a){if(this.result.length){const c=[];for(let b=0,e;b<this.result.length;b++)if(e=this.result[b])e.length<=a?a-=e.length:(c[b]=e.slice(a),a=0);this.result=c}return this};X.prototype.boost=function(a){this.h+=a;return this};X.prototype.resolve=function(a,c,b){const e=this.result,d=this.index;this.result=this.index=null;return e.length?("object"===typeof a&&(b=a.enrich,c=a.offset,a=a.limit),za.call(d,e,a||100,c,b)):e};C();V.prototype.search=function(a,c,b,e){b||(!c&&H(a)?(b=a,a=""):H(c)&&(b=c,c=0));let d=[];var f=[];let g;let k,h,l;let m=0,n=!0,r;if(b){b.constructor===Array&&(b={index:b});a=b.query||a;var p=b.pluck;var q=b.merge;h=p||b.field||(h=b.index)&&(h.index?null:h);l=this.tag&&b.tag;k=b.suggest;n=!0;r=(g=this.store&&b.enrich&&n)&&b.highlight;c=b.limit||c;var t=b.offset||0;c||(c=100);if(l){l.constructor!==Array&&(l=[l]);var u=[];for(let y=0,v;y<l.length;y++)if(v=l[y],v.field&&v.tag){var w=v.tag;if(w.constructor===
 Array)for(var z=0;z<w.length;z++)u.push(v.field,w[z]);else u.push(v.field,w)}else{w=Object.keys(v);for(let E=0,F,A;E<w.length;E++)if(F=w[E],A=v[F],A.constructor===Array)for(z=0;z<A.length;z++)u.push(F,A[z]);else u.push(F,A)}l=u;if(!a){f=[];if(u.length)for(p=0;p<u.length;p+=2)q=Ha.call(this,u[p],u[p+1],c,t,g),d.push({field:u[p],tag:u[p+1],result:q});return f.length?Promise.all(f).then(function(y){for(let v=0;v<y.length;v++)d[v].result=y[v];return d}):d}}h&&h.constructor!==Array&&(h=[h])}h||(h=this.field);
-u=!e&&(this.worker||this.db)&&[];for(let y=0,v,E,F;y<h.length;y++){E=h[y];let A;D(E)||(A=E,E=A.field,a=A.query||a,c=A.limit||c,t=A.offset||t,k=A.suggest||k,g=this.store&&(A.enrich||g));if(e)v=e[y];else if(w=A||b,z=this.index.get(E),l&&(w.enrich=!1),u){u[y]=z.search(a,c,w);w&&g&&(w.enrich=g);continue}else v=z.search(a,c,w),w&&g&&(w.enrich=g);F=v&&(n?v.length:v.result.length);if(l&&F){w=[];z=0;for(let J=0,G,Wa;J<l.length;J+=2){G=this.tag.get(l[J]);if(!G)if(k)continue;else return n?d:new X(d);if(Wa=
+u=!e&&(this.worker||this.db)&&[];for(let y=0,v,E,F;y<h.length;y++){E=h[y];let A;D(E)||(A=E,E=A.field,a=A.query||a,c=A.limit||c,t=A.offset||t,k=A.suggest||k,g=this.store&&(A.enrich||g));if(e)v=e[y];else if(w=A||b,z=this.index.get(E),l&&(w.enrich=!1),u){u[y]=z.search(a,c,w);w&&g&&(w.enrich=g);continue}else v=z.search(a,c,w),w&&g&&(w.enrich=g);F=v&&(n?v.length:v.result.length);if(l&&F){w=[];z=0;for(let J=0,G,Va;J<l.length;J+=2){G=this.tag.get(l[J]);if(!G)if(k)continue;else return n?d:new X(d);if(Va=
 (G=G&&G.get(l[J+1]))&&G.length)z++,w.push(G);else if(!k)return n?d:new X(d)}if(z){v=ya(v,w);F=v.length;if(!F&&!k)return n?v:new X(v);z--}}if(F)f[m]=E,d.push(v),m++;else if(1===h.length)return n?d:new X(d)}if(u){const y=this;return Promise.all(u).then(function(v){return v.length?y.search(a,c,b,v):v})}if(!m)return n?d:new X(d);if(p&&(!g||!this.store))return d[0];u=[];for(t=0;t<f.length;t++){e=d[t];g&&e.length&&"undefined"===typeof e[0].doc&&(e=W.call(this,e));if(p)return n?e:new X(e);d[t]={field:f[t],
 result:e}}return q?Ia(d,c):r?Ja(d,a,this.index,this.field,this.C,r):d};
 function Ja(a,c,b,e,d,f){let g,k,h;for(let m=0,n,r,p,q;m<a.length;m++){let t=a[m].result;n=a[m].field;p=b.get(n);r=p.encoder;h=p.tokenize;q=d[e.indexOf(n)];r!==g&&(g=r,k=g.encode(c));for(let u=0;u<t.length;u++){let w="";var l=I(t[u].doc,q);let z=g.encode(l);l=l.split(g.split);for(let y=0,v,E;y<z.length;y++){v=z[y];E=l[y];if(!v||!E)continue;let F;for(let A=0,J;A<k.length;A++)if(J=k[A],"strict"===h){if(v===J){w+=(w?" ":"")+f.replace("$1",E);F=!0;break}}else{const G=v.indexOf(J);if(-1<G){w+=(w?" ":"")+
@@ -47,19 +47,19 @@ a,g):a,b.set(f,new O(g,this.reg)),g.custom?this.C[d]=g.custom:(this.C[d]=Ka(f,th
 typeof b&&(b=[b]),b.length){this.tag=new Map;this.B=[];this.T=[];for(let d=0,f,g;d<b.length;d++){f=b[d];g=f.field||f;if(!g)throw Error("The tag field from the document descriptor is undefined.");f.custom?this.B[d]=f.custom:(this.B[d]=Ka(g,this.J),f.filter&&("string"===typeof this.B[d]&&(this.B[d]=new String(this.B[d])),this.B[d].I=f.filter));this.T[d]=g;this.tag.set(g,new Map)}}}
 function Ka(a,c){const b=a.split(":");let e=0;for(let d=0;d<b.length;d++)a=b[d],"]"===a[a.length-1]&&(a=a.substring(0,a.length-2))&&(c[e]=!0),a&&(b[e++]=a);e<b.length&&(b.length=e);return 1<e?b:b[0]}x=V.prototype;x.append=function(a,c){return this.add(a,c,!0)};x.update=function(a,c){return this.remove(a).add(a,c)};
 x.remove=function(a){H(a)&&(a=I(a,this.key));for(var c of this.index.values())c.remove(a,!0);if(this.reg.has(a)){if(this.tag&&!this.fastupdate)for(let b of this.tag.values())for(let e of b){c=e[0];const d=e[1],f=d.indexOf(a);-1<f&&(1<d.length?d.splice(f,1):b.delete(c))}this.store&&this.store.delete(a);this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
-x.clear=function(){const a=[];for(const c of this.index.values()){const b=c.clear();b.then&&a.push(b)}if(this.tag)for(const c of this.tag.values())c.clear();this.store&&this.store.clear();this.cache&&this.cache.clear();return a.length?Promise.all(a):this};x.contain=function(a){return this.reg.has(a)};x.cleanup=function(){for(const a of this.index.values())a.cleanup();return this};x.get=function(a){return this.store.get(a)};x.set=function(a,c){this.store.set(a,c);return this};x.searchCache=La;
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+function Wa(a,c,b){let e;b&&(e=a.bidirectional&&c>b)&&(e=b,b=c,c=e);a=b?(a=a.ctx.get(b))&&a.get(c):a.map.get(c);return a};O.prototype.remove=function(a,c){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let e=0,d;e<b.length;e++){if(d=b[e])if(2>d.length)d.pop();else{const f=d.indexOf(a);f===b.length-1?d.pop():d.splice(f,1)}}else Xa(this.map,a),this.depth&&Xa(this.ctx,a);c||this.reg.delete(a)}this.cache&&this.cache.remove(a);return this};
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-x.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=ta(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let k=ta(g[1],f);k="new Map(["+k+"])";k='["'+d+'",'+k+"]";e+=(e?",":"")+k}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};ia(O.prototype);C();export default {Index:O,Charset:Ta,Encoder:K,Document:V,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
-export const Index=O;export const Charset=Ta;export const Encoder=K;export const Document=V;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
+x.serialize=function(a=!0){let c="",b="",e="";if(this.reg.size){let f;for(var d of this.reg.keys())f||(f=typeof d),c+=(c?",":"")+("string"===f?'"'+d+'"':d);c="index.reg=new Set(["+c+"]);";b=ta(this.map,f);b="index.map=new Map(["+b+"]);";for(const g of this.ctx.entries()){d=g[0];let k=ta(g[1],f);k="new Map(["+k+"])";k='["'+d+'",'+k+"]";e+=(e?",":"")+k}e="index.ctx=new Map(["+e+"]);"}return a?"function inject(index){"+c+b+e+"}":c+b+e};ia(O.prototype);C();export default {Index:O,Charset:Sa,Encoder:K,Document:V,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
+export const Index=O;export const Charset=Sa;export const Encoder=K;export const Document=V;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.es5.debug.js b/dist/flexsearch.es5.debug.js
index 71dd260..97c286d 100644
--- a/dist/flexsearch.es5.debug.js
+++ b/dist/flexsearch.es5.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (ES5/Debug)
+ * FlexSearch.js v0.8.147 (ES5/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -1166,17 +1166,17 @@ function Ha(a) {
   });
 }
 ;function Ia(a) {
-  La.call(a, "add");
-  La.call(a, "append");
-  La.call(a, "search");
-  La.call(a, "update");
-  La.call(a, "remove");
+  Ja.call(a, "add");
+  Ja.call(a, "append");
+  Ja.call(a, "search");
+  Ja.call(a, "update");
+  Ja.call(a, "remove");
 }
 var Ma, Na, Oa;
 function Pa() {
   Ma = Oa = 0;
 }
-function La(a) {
+function Ja(a) {
   this[a + "Async"] = function() {
     var b = arguments, c = b[b.length - 1];
     if ("function" === typeof c) {
@@ -2233,10 +2233,10 @@ W.prototype.search = function(a, b, c, d) {
         if (p) {
           if (this.db) {
             y.tag = p;
-            var Ja = v.db.support_tag_search;
+            var Ka = v.db.support_tag_search;
             y.field = n;
           }
-          Ja || (y.enrich = !1);
+          Ka || (y.enrich = !1);
         }
         if (r) {
           r[A] = v.search(a, b, y);
@@ -2251,7 +2251,7 @@ W.prototype.search = function(a, b, c, d) {
         D = [];
         H = 0;
         if (this.db && d) {
-          if (!Ja) {
+          if (!Ka) {
             for (I = n.length; I < d.length; I++) {
               var M = d[I];
               if (M && M.length) {
@@ -2263,7 +2263,7 @@ W.prototype.search = function(a, b, c, d) {
           }
         } else {
           I = 0;
-          for (var Zb = M = void 0; I < p.length; I += 2) {
+          for (var Yb = M = void 0; I < p.length; I += 2) {
             M = this.tag.get(p[I]);
             if (!M) {
               if (console.warn("Tag '" + p[I] + ":" + p[I + 1] + "' will be skipped because there is no field '" + p[I] + "'."), q) {
@@ -2272,7 +2272,7 @@ W.prototype.search = function(a, b, c, d) {
                 return k ? e : new Y(e);
               }
             }
-            if (Zb = (M = M && M.get(p[I + 1])) && M.length) {
+            if (Yb = (M = M && M.get(p[I + 1])) && M.length) {
               H++, D.push(M);
             } else if (!q) {
               return k ? e : new Y(e);
@@ -2296,7 +2296,7 @@ W.prototype.search = function(a, b, c, d) {
     }
   }
   if (r) {
-    if (this.db && p && p.length && !Ja) {
+    if (this.db && p && p.length && !Ka) {
       for (f = 0; f < p.length; f += 2) {
         g = this.index.get(p[f]);
         if (!g) {
@@ -2309,9 +2309,9 @@ W.prototype.search = function(a, b, c, d) {
         r.push(g.db.tag(p[f + 1], b, w, !1));
       }
     }
-    var $b = this;
+    var Zb = this;
     return Promise.all(r).then(function(Q) {
-      return Q.length ? $b.search(a, b, c, Q) : Q;
+      return Q.length ? Zb.search(a, b, c, Q) : Q;
     });
   }
   if (!h) {
@@ -2330,12 +2330,12 @@ W.prototype.search = function(a, b, c, d) {
     e[w] = {field:g[w], result:q};
   }
   if (f && this.db && r.length) {
-    var Ka = this;
+    var La = this;
     return Promise.all(r).then(function(Q) {
       for (var R = 0; R < Q.length; R++) {
         e[R].result = Q[R];
       }
-      return m ? ub(e, b) : t ? vb(e, a, Ka.index, Ka.field, Ka.J, t) : e;
+      return m ? ub(e, b) : t ? vb(e, a, La.index, La.field, La.J, t) : e;
     });
   }
   return m ? ub(e, b) : t ? vb(e, a, this.index, this.field, this.J, t) : e;
@@ -2613,10 +2613,11 @@ u.cleanup = function() {
 };
 u.get = function(a) {
   return this.db ? this.index.get(this.field[0]).db.enrich(a).then(function(b) {
-    return b[0] && b[0].doc;
-  }) : this.store.get(a);
+    return b[0] && b[0].doc || null;
+  }) : this.store.get(a) || null;
 };
 u.set = function(a, b) {
+  "object" === typeof a && (b = a, a = ya(b, this.key));
   this.store.set(a, b);
   return this;
 };
@@ -2735,20 +2736,19 @@ xb.prototype.clear = function() {
   this.cache.clear();
   this.h = "";
 };
-var Ab = {normalize:!1, numeric:!1, split:/\s+/};
-var Bb = {normalize:!0};
-var Cb = {normalize:!0, dedupe:!0};
-var Db = 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 Eb = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Fb = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
-var Gb = {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 Hb = {na:Ab, ma:Bb, oa:Cb, LatinBalance:{normalize:!0, dedupe:!0, mapper:Db}, LatinAdvanced:{normalize:!0, dedupe:!0, mapper:Db, matcher:Eb, replacer:Fb}, LatinExtra:{normalize:!0, dedupe:!0, mapper:Db, replacer:Fb.concat([/(?!^)[aeo]/g, ""]), matcher:Eb}, LatinSoundex:{normalize:!0, dedupe:!1, include:{letter:!0}, finalize:function(a) {
+var Ab = {normalize:!1, numeric:!1};
+var Bb = {};
+var Cb = 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 Db = new Map([["ae", "a"], ["oe", "o"], ["sh", "s"], ["kh", "k"], ["th", "t"], ["ph", "f"], ["pf", "f"]]), Eb = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2", /(.)\1+/g, "$1"];
+var Fb = {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 Gb = {na:Ab, ma:Bb, oa:Bb, LatinBalance:{dedupe:!0, mapper:Cb}, LatinAdvanced:{dedupe:!0, mapper:Cb, matcher:Db, replacer:Eb}, LatinExtra:{dedupe:!0, mapper:Cb, replacer:Eb.concat([/(?!^)[aeo]/g, ""]), matcher:Db}, LatinSoundex:{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 = Gb[d], g = 1, f; g < c.length && (f = c.charAt(g), "h" === f || "w" === f || !(f = Gb[f]) || f === e || (d += f, e = f, 4 !== d.length)); g++) {
+    for (var c = a[b], d = c.charAt(0), e = Fb[d], g = 1, f; g < c.length && (f = c.charAt(g), "h" === f || "w" === f || !(f = Fb[f]) || f === e || (d += f, e = f, 4 !== d.length)); g++) {
     }
     a[b] = d;
   }
-}}, LatinExact:Ab, LatinDefault:Bb, LatinSimple:Cb};
-var Ib = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+}}, LatinExact:Ab, LatinDefault:Bb, LatinSimple:Bb};
+var Hb = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
 P.prototype.add = function(a, b, c, d) {
   if (b && (a || 0 === a)) {
     if (!d && !c && this.reg.has(a)) {
@@ -2759,14 +2759,14 @@ P.prototype.add = function(a, b, c, d) {
       for (var e = J(), g = J(), 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) : Jb(h, d, k), p = "";
+          var n = this.score ? this.score(b, l, k, null, 0) : Ib(h, d, k), p = "";
           switch(this.tokenize) {
             case "full":
               if (2 < m) {
                 n = 0;
                 for (var q; n < m; n++) {
                   for (var t = m; t > n; t--) {
-                    p = l.substring(n, t), q = this.rtl ? m - 1 - n : n, q = this.score ? this.score(b, l, k, p, q) : Jb(h, d, k, m, q), Kb(this, g, p, q, a, c);
+                    p = l.substring(n, t), q = this.rtl ? m - 1 - n : n, q = this.score ? this.score(b, l, k, p, q) : Ib(h, d, k, m, q), Jb(this, g, p, q, a, c);
                   }
                 }
                 break;
@@ -2775,24 +2775,24 @@ P.prototype.add = function(a, b, c, d) {
             case "reverse":
               if (1 < m) {
                 for (t = m - 1; 0 < t; t--) {
-                  p = l[this.rtl ? m - 1 - t : t] + p, q = this.score ? this.score(b, l, k, p, t) : Jb(h, d, k, m, t), Kb(this, g, p, q, a, c);
+                  p = l[this.rtl ? m - 1 - t : t] + p, q = this.score ? this.score(b, l, k, p, t) : Ib(h, d, k, m, t), Jb(this, g, p, q, a, c);
                 }
                 p = "";
               }
             case "forward":
               if (1 < m) {
                 for (t = 0; t < m; t++) {
-                  p += l[this.rtl ? m - 1 - t : t], Kb(this, g, p, n, a, c);
+                  p += l[this.rtl ? m - 1 - t : t], Jb(this, g, p, n, a, c);
                 }
                 break;
               }
             default:
-              if (Kb(this, g, l, n, a, c), f && 1 < d && k < d - 1) {
+              if (Jb(this, g, l, n, a, c), f && 1 < d && k < d - 1) {
                 for (m = J(), p = this.da, n = l, t = Math.min(f + 1, this.rtl ? k + 1 : d - k), q = m[n] = 1; q < t; q++) {
                   if ((l = b[this.rtl ? d - 1 - k - q : k + q]) && !m[l]) {
                     m[l] = 1;
-                    var w = this.score ? this.score(b, n, k, l, q - 1) : Jb(p + (d / 2 > p ? 0 : 1), d, k, t - 1, q - 1), r = this.bidirectional && l > n;
-                    Kb(this, e, r ? n : l, w, a, c, r ? l : n);
+                    var w = this.score ? this.score(b, n, k, l, q - 1) : Ib(p + (d / 2 > p ? 0 : 1), d, k, t - 1, q - 1), r = this.bidirectional && l > n;
+                    Jb(this, e, r ? n : l, w, a, c, r ? l : n);
                   }
                 }
               }
@@ -2804,10 +2804,10 @@ P.prototype.add = function(a, b, c, d) {
       b = "";
     }
   }
-  this.db && (b || this.commit_task.push({del:a}), this.ca && Lb(this));
+  this.db && (b || this.commit_task.push({del:a}), this.ca && Kb(this));
   return this;
 };
-function Kb(a, b, c, d, e, g, f) {
+function Jb(a, b, c, d, e, g, f) {
   var h = f ? a.ctx : a.map, k;
   if (!b[c] || f && !(k = b[c])[f]) {
     if (f ? (b = k || (b[c] = J()), b[f] = 1, (k = h.get(f)) ? h = k : h.set(f, h = new Map())) : b[c] = 1, (k = h.get(c)) ? h = k : h.set(c, h = k = []), h = h[d] || (h[d] = []), !g || !h.includes(e)) {
@@ -2825,7 +2825,7 @@ function Kb(a, b, c, d, e, g, f) {
     }
   }
 }
-function Jb(a, b, c, d, e) {
+function Ib(a, b, c, d, e) {
   return c && 1 < a ? b + (d || 0) <= a ? c + (e || 0) : (a - 1) / (b + (d || 0)) * (c + (e || 0)) + 1 | 0 : 0;
 }
 ;P.prototype.search = function(a, b, c) {
@@ -2848,11 +2848,11 @@ function Jb(a, b, c, d, e) {
   var q = p.length;
   b = b || (g ? 100 : 0);
   if (1 === q) {
-    return Mb.call(this, p[0], "", b, e, g, k, n);
+    return Lb.call(this, p[0], "", b, e, g, k, n);
   }
   f = this.depth && !1 !== f;
   if (2 === q && f && !h) {
-    return Mb.call(this, p[0], p[1], b, e, g, k, n);
+    return Lb.call(this, p[1], p[0], b, e, g, k, n);
   }
   var t = J(), w = 0;
   if (1 < q && f) {
@@ -2882,10 +2882,10 @@ function Jb(a, b, c, d, e) {
               break;
             }
             t[v] = 1;
-            return E(y, Nb(A, v, r, 0, 0, !1, !1), 6);
+            return E(y, Mb(A, v, r, 0, 0, !1, !1), 6);
           case 6:
             z = y.D;
-            if (z = Ob(z, d, h, m)) {
+            if (z = Nb(z, d, h, m)) {
               d = z;
               y.h = 4;
               break;
@@ -2897,7 +2897,7 @@ function Jb(a, b, c, d, e) {
             y.h = 2;
             break;
           case 4:
-            return y.return(Pb(d, m, b, e, h, l, g));
+            return y.return(Ob(d, m, b, e, h, l, g));
         }
       });
     }();
@@ -2905,8 +2905,8 @@ function Jb(a, b, c, d, e) {
   for (c = a = void 0; w < q; w++) {
     if ((c = p[w]) && !t[c]) {
       t[c] = 1;
-      a = Nb(this, c, r, 0, 0, !1, !1);
-      if (a = Ob(a, d, h, m)) {
+      a = Mb(this, c, r, 0, 0, !1, !1);
+      if (a = Nb(a, d, h, m)) {
         d = a;
         break;
       }
@@ -2914,9 +2914,9 @@ function Jb(a, b, c, d, e) {
     }
     h && r && w === q - 1 && !d.length && (m = this.resolution, r = "", w = -1, t = J());
   }
-  return Pb(d, m, b, e, h, l, g);
+  return Ob(d, m, b, e, h, l, g);
 };
-function Pb(a, b, c, d, e, g, f) {
+function Ob(a, b, c, d, e, g, f) {
   var h = a.length, k = a;
   if (1 < h) {
     k = ib(a, b, c, d, e, g, f);
@@ -2925,13 +2925,13 @@ function Pb(a, b, c, d, e, g, f) {
   }
   return f ? k : new Y(k);
 }
-function Mb(a, b, c, d, e, g, f) {
-  a = Nb(this, a, b, c, d, e, g, f);
+function Lb(a, b, c, d, e, g, f) {
+  a = Mb(this, a, b, c, d, e, g, f);
   return this.db ? a.then(function(h) {
     return e ? h || [] : new Y(h);
   }) : a && a.length ? e ? lb.call(this, a, c, d) : new Y(a) : e ? [] : new Y();
 }
-function Ob(a, b, c, d) {
+function Nb(a, b, c, d) {
   var e = [];
   if (a && a.length) {
     if (a.length <= d) {
@@ -2952,7 +2952,7 @@ function Ob(a, b, c, d) {
     return e;
   }
 }
-function Nb(a, b, c, d, e, g, f, h) {
+function Mb(a, b, c, d, e, g, f, h) {
   var k;
   c && (k = a.bidirectional && b > c) && (k = c, c = b, b = k);
   if (a.db) {
@@ -2976,15 +2976,15 @@ function Nb(a, b, c, d, e, g, f, h) {
         }
       }
     } else {
-      Qb(this.map, a), this.depth && Qb(this.ctx, a);
+      Pb(this.map, a), this.depth && Pb(this.ctx, a);
     }
     b || this.reg.delete(a);
   }
-  this.db && (this.commit_task.push({del:a}), this.ca && Lb(this));
+  this.db && (this.commit_task.push({del:a}), this.ca && Kb(this));
   this.cache && this.cache.remove(a);
   return this;
 };
-function Qb(a, b) {
+function Pb(a, b) {
   var c = 0;
   if (a.constructor === Array) {
     for (var d = 0, e = void 0, g; d < a.length; d++) {
@@ -2999,7 +2999,7 @@ function Qb(a, b) {
     }
   } else {
     for (d = x(a.entries()), e = d.next(); !e.done; e = d.next()) {
-      g = e.value, e = g[0], (g = Qb(g[1], b)) ? c += g : a.delete(e);
+      g = e.value, e = g[0], (g = Pb(g[1], b)) ? c += g : a.delete(e);
     }
   }
   return c;
@@ -3010,12 +3010,12 @@ function Qb(a, b) {
   }
   if (a) {
     var c = K(a) ? a : a.preset;
-    c && (Ib[c] || console.warn("Preset not found: " + c), a = Object.assign({}, Ib[c], a));
+    c && (Hb[c] || console.warn("Preset not found: " + c), a = Object.assign({}, Hb[c], a));
   } else {
     a = {};
   }
   c = a.context;
-  var d = !0 === c ? {depth:1} : c || {}, e = K(a.encoder) ? Hb[a.encoder] : a.encode || a.encoder || Bb;
+  var d = !0 === c ? {depth:1} : c || {}, e = K(a.encoder) ? Gb[a.encoder] : a.encode || a.encoder || {};
   this.encoder = e.encode ? e : "object" === typeof e ? new Fa(e) : {encode:e};
   this.resolution = a.resolution || 9;
   this.tokenize = c = (c = a.tokenize) && "default" !== c && "exact" !== c && c || "strict";
@@ -3053,7 +3053,7 @@ u.destroy = function() {
   this.commit_timer && (clearTimeout(this.commit_timer), this.commit_timer = null);
   return this.db.destroy();
 };
-function Lb(a) {
+function Kb(a) {
   a.commit_timer || (a.commit_timer = setTimeout(function() {
     a.commit_timer = null;
     a.db.commit(a, void 0, void 0);
@@ -3079,7 +3079,7 @@ u.update = function(a, b) {
     return c.add(a, b);
   }) : this.add(a, b);
 };
-function Rb(a) {
+function Qb(a) {
   var b = 0;
   if (a.constructor === Array) {
     for (var c = 0, d = void 0; c < a.length; c++) {
@@ -3089,7 +3089,7 @@ function Rb(a) {
     for (c = x(a.entries()), d = c.next(); !d.done; d = c.next()) {
       var e = d.value;
       d = e[0];
-      (e = Rb(e[1])) ? b += e : a.delete(d);
+      (e = Qb(e[1])) ? b += e : a.delete(d);
     }
   }
   return b;
@@ -3098,8 +3098,8 @@ u.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  Rb(this.map);
-  this.depth && Rb(this.ctx);
+  Qb(this.map);
+  this.depth && Qb(this.ctx);
   return this;
 };
 u.searchCache = zb;
@@ -3169,11 +3169,11 @@ u.serialize = function(a) {
   return a ? "function inject(index){" + b + c + d + "}" : b + c + d;
 };
 Ia(P.prototype);
-var Sb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), Tb = ["map", "ctx", "tag", "reg", "cfg"], Ub = J();
-function Vb(a, b) {
+var Rb = "undefined" !== typeof window && (window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB), Sb = ["map", "ctx", "tag", "reg", "cfg"], Tb = J();
+function Ub(a, b) {
   b = void 0 === b ? {} : b;
   if (!this) {
-    return new Vb(a, b);
+    return new Ub(a, b);
   }
   "object" === typeof a && (b = a, a = a.name);
   a || console.info("Default storage space was used, because a name was not passed.");
@@ -3184,7 +3184,7 @@ function Vb(a, b) {
   this.db = null;
   this.h = {};
 }
-u = Vb.prototype;
+u = Ub.prototype;
 u.mount = function(a) {
   if (!a.encoder) {
     return a.mount(this);
@@ -3198,14 +3198,14 @@ u.open = function() {
   }
   var a = this;
   navigator.storage && navigator.storage.persist();
-  Ub[a.id] || (Ub[a.id] = []);
-  Ub[a.id].push(a.field);
-  var b = Sb.open(a.id, 1);
+  Tb[a.id] || (Tb[a.id] = []);
+  Tb[a.id].push(a.field);
+  var b = Rb.open(a.id, 1);
   b.onupgradeneeded = function() {
-    for (var c = a.db = this.result, d = 0, e; d < Tb.length; d++) {
-      e = Tb[d];
-      for (var g = 0, f; g < Ub[a.id].length; g++) {
-        f = Ub[a.id][g], c.objectStoreNames.contains(e + ("reg" !== e ? f ? ":" + f : "" : "")) || c.createObjectStore(e + ("reg" !== e ? f ? ":" + f : "" : ""));
+    for (var c = a.db = this.result, d = 0, e; d < Sb.length; d++) {
+      e = Sb[d];
+      for (var g = 0, f; g < Tb[a.id].length; g++) {
+        f = Tb[a.id][g], c.objectStoreNames.contains(e + ("reg" !== e ? f ? ":" + f : "" : "")) || c.createObjectStore(e + ("reg" !== e ? f ? ":" + f : "" : ""));
       }
     }
   };
@@ -3221,14 +3221,14 @@ u.close = function() {
   this.db = null;
 };
 u.destroy = function() {
-  var a = Sb.deleteDatabase(this.id);
+  var a = Rb.deleteDatabase(this.id);
   return Z(a);
 };
 u.clear = function() {
-  for (var a = [], b = 0, c; b < Tb.length; b++) {
-    c = Tb[b];
-    for (var d = 0, e; d < Ub[this.id].length; d++) {
-      e = Ub[this.id][d], a.push(c + ("reg" !== c ? e ? ":" + e : "" : ""));
+  for (var a = [], b = 0, c; b < Sb.length; b++) {
+    c = Sb[b];
+    for (var d = 0, e; d < Tb[this.id].length; d++) {
+      e = Tb[this.id][d], a.push(c + ("reg" !== c ? e ? ":" + e : "" : ""));
     }
   }
   b = this.db.transaction(a, "readwrite");
@@ -3475,7 +3475,7 @@ u.commit = function(a, b, c) {
     }
   });
 };
-function Wb(a, b, c) {
+function Vb(a, b, c) {
   for (var d = a.value, e, g = 0, f = 0, h; f < d.length; f++) {
     if (h = c ? d : d[f]) {
       for (var k = 0, l; k < b.length; k++) {
@@ -3502,17 +3502,17 @@ u.remove = function(a) {
   return Promise.all([this.transaction("map", "readwrite", function(b) {
     b.openCursor().onsuccess = function() {
       var c = this.result;
-      c && Wb(c, a);
+      c && Vb(c, a);
     };
   }), this.transaction("ctx", "readwrite", function(b) {
     b.openCursor().onsuccess = function() {
       var c = this.result;
-      c && Wb(c, a);
+      c && Vb(c, a);
     };
   }), this.transaction("tag", "readwrite", function(b) {
     b.openCursor().onsuccess = function() {
       var c = this.result;
-      c && Wb(c, a, !0);
+      c && Vb(c, a, !0);
     };
   }), this.transaction("reg", "readwrite", function(b) {
     for (var c = 0; c < a.length; c++) {
@@ -3531,8 +3531,8 @@ function Z(a, b) {
     a = null;
   });
 }
-;var Xb = {Index:P, Charset:Hb, Encoder:Fa, Document:W, Worker:Ra, Resolver:Y, IndexedDB:Vb, Language:{}}, Yb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self, ac;
-(ac = Yb.define) && ac.amd ? ac([], function() {
-  return Xb;
-}) : "object" === typeof Yb.exports ? Yb.exports = Xb : Yb.FlexSearch = Xb;
+;var Wb = {Index:P, Charset:Gb, Encoder:Fa, Document:W, Worker:Ra, Resolver:Y, IndexedDB:Ub, Language:{}}, Xb = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self, $b;
+($b = Xb.define) && $b.amd ? $b([], function() {
+  return Wb;
+}) : "object" === typeof Xb.exports ? Xb.exports = Wb : Xb.FlexSearch = Wb;
 }(this||self));
diff --git a/dist/flexsearch.es5.min.js b/dist/flexsearch.es5.min.js
index af30cb8..812a25c 100644
--- a/dist/flexsearch.es5.min.js
+++ b/dist/flexsearch.es5.min.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (ES5)
+ * FlexSearch.js v0.8.147 (ES5)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -49,10 +49,10 @@ d=[],e=this.split||""===this.split?a.split(this.split):a,g=0,f=void 0,h=void 0;g
 k!==f&&this.filter&&f.length>=this.minlength&&("function"===typeof this.filter?!this.filter(f):this.filter.has(f))&&(f=""));if(f&&(this.mapper||this.dedupe&&1<f.length)){k="";for(var l=0,m="",n=void 0,p=void 0;l<f.length;l++)n=f.charAt(l),n===m&&this.dedupe||((p=this.mapper&&this.mapper.get(n))||""===p?p===m&&this.dedupe||!(m=p)||(k+=p):k+=m=n);f=k}this.matcher&&1<f.length&&(this.M||(this.M=new RegExp("("+this.h+")","g")),f=f.replace(this.M,function(q){return b.matcher.get(q)}));if(f&&this.replacer)for(k=
 0;f&&k<this.replacer.length;k+=2)f=f.replace(this.replacer[k],this.replacer[k+1]);this.cache&&h.length<=this.H&&(this.C.set(h,f),this.C.size>this.T&&(this.C.clear(),this.H=this.H/1.1|0));f&&d.push(f)}this.finalize&&(d=this.finalize(d)||d);this.cache&&a.length<=this.G&&(this.B.set(a,d),this.B.size>this.T&&(this.B.clear(),this.G=this.G/1.1|0));return d};function N(a){a.D=null;a.B.clear();a.C.clear()};var Ga,Ha;
 function Ia(a){var b,c,d,e,g,f;return ta(function(h){switch(h.h){case 1:a=a.data;b=a.task;c=a.id;d=a.args;switch(b){case "init":Ha=a.options||{};(e=a.factory)?(Function("return "+e)()(self),Ga=new self.FlexSearch.Index(Ha),delete self.FlexSearch):Ga=new O(Ha);postMessage({id:c});break;default:h.h=2;return}h.h=0;break;case 2:"export"===b&&(d[1]?(d[0]=Ha.export,d[2]=0,d[3]=1):d=null);if("import"===b){if(!d[0]){h.h=5;break}return E(h,Ha.import.call(Ga,d[0]),9)}g=d&&Ga[b].apply(Ga,d);if(!g||!g.then){h.h=
-5;break}return E(h,g,7);case 7:g=h.D;h.h=5;break;case 9:f=h.D,Ga.import(d[0],f);case 5:postMessage("search"===b?{id:c,msg:g}:{id:c}),h.h=0}})};function La(a){Ma.call(a,"add");Ma.call(a,"append");Ma.call(a,"search");Ma.call(a,"update");Ma.call(a,"remove")}var Na,Oa,Pa;function Qa(){Na=Pa=0}
+5;break}return E(h,g,7);case 7:g=h.D;h.h=5;break;case 9:f=h.D,Ga.import(d[0],f);case 5:postMessage("search"===b?{id:c,msg:g}:{id:c}),h.h=0}})};function Ja(a){Ma.call(a,"add");Ma.call(a,"append");Ma.call(a,"search");Ma.call(a,"update");Ma.call(a,"remove")}var Na,Oa,Pa;function Qa(){Na=Pa=0}
 function Ma(a){this[a+"Async"]=function(){var b=arguments,c=b[b.length-1];if("function"===typeof c){var d=c;delete b[b.length-1]}Na?Pa||(Pa=Date.now()-Oa>=this.priority*this.priority*3):(Na=setTimeout(Qa,0),Oa=Date.now());if(Pa){var e=this;return new Promise(function(f){setTimeout(function(){f(e[a+"Async"].apply(e,b))},0)})}var g=this[a].apply(this,b);c=g.then?g:new Promise(function(f){return f(g)});d&&c.then(d);return c}};var Ra=0;
 function Sa(a){function b(f){function h(k){k=k.data||k;var l=k.id,m=l&&e.h[l];m&&(m(k.msg),delete e.h[l])}this.worker=f;this.h=J();if(this.worker){d?this.worker.on("message",h):this.worker.onmessage=h;if(a.config)return new Promise(function(k){e.h[++Ra]=function(){k(e);1E9<Ra&&(Ra=0)};e.worker.postMessage({id:Ra,task:"init",factory:c,options:a})});this.worker.postMessage({task:"init",factory:c,options:a});this.priority=a.priority||4;return this}}a=void 0===a?{}:a;if(!this||this.constructor!==Sa)return new Sa(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=Ta(c,d,a.worker);return g.then?g.then(function(f){return b.call(e,f)}):b.call(this,g)}R("add");R("append");R("search");R("update");R("remove");R("clear");R("export");R("import");La(Sa.prototype);
+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=Ta(c,d,a.worker);return g.then?g.then(function(f){return b.call(e,f)}):b.call(this,g)}R("add");R("append");R("search");R("update");R("remove");R("clear");R("export");R("import");Ja(Sa.prototype);
 function R(a){Sa.prototype[a]=function(){var b=this,c=[].slice.call(arguments),d=c[c.length-1];if("function"===typeof d){var e=d;c.pop()}d=new Promise(function(g){"export"===a&&"function"===typeof c[0]&&(c[0]=null);b.h[++Ra]=g;b.worker.postMessage({task:a,id:Ra,args:c})});return e?(d.then(e),this):d}}
 function Ta(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="+Ia.toString()],{type:"text/javascript"}))):new window.Worker("string"===typeof 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 Ua(a,b){b=void 0===b?0:b;var c=[],d=[];b&&(b=25E4/b*5E3|0);a=x(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 Va(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}
@@ -82,9 +82,9 @@ function tb(a,b,c,d){var e=[];a=new Set(a.flat().flat());for(var g=0,f,h=0;g<thi
 X.prototype.offset=function(a){if(this.result.length){for(var b=[],c=0,d;c<this.result.length;c++)if(d=this.result[c])d.length<=a?a-=d.length:(b[c]=d.slice(a),a=0);this.result=b}return this};X.prototype.boost=function(a){this.h+=a;return this};X.prototype.resolve=function(a,b,c){var d=this.result,e=this.index;this.result=this.index=null;return d.length?("object"===typeof a&&(c=a.enrich,b=a.offset,a=a.limit),mb.call(e,d,a||100,b,c)):d};J();V.prototype.search=function(a,b,c,d){c||(!b&&L(a)?(c=a,a=""):L(b)&&(c=b,b=0));var e=[],g=[],f,h=0,k=!0;if(c){c.constructor===Array&&(c={index:c});a=c.query||a;var l=c.pluck;var m=c.merge;var n=l||c.field||(n=c.index)&&(n.index?null:n);var p=this.tag&&c.tag;var q=c.suggest;k=!1!==c.resolve;k||l||!(n=n||this.field)||(K(n)?l=n:(n.constructor===Array&&1===n.length&&(n=n[0]),l=n.field||n.index));var r=(f=this.store&&c.enrich&&k)&&c.highlight;b=c.limit||b;var w=c.offset||0;b||(b=100);if(p&&(!this.db||!d)){p.constructor!==
 Array&&(p=[p]);for(var t=[],A=0,z=void 0;A<p.length;A++)if(z=p[A],z.field&&z.tag){var v=z.tag;if(v.constructor===Array)for(var y=0;y<v.length;y++)t.push(z.field,v[y]);else t.push(z.field,v)}else{v=Object.keys(z);y=0;for(var D=void 0,H=void 0;y<v.length;y++)if(D=v[y],H=z[D],H.constructor===Array)for(var I=0;I<H.length;I++)t.push(D,H[I]);else t.push(D,H)}p=t;if(!a){k=[];if(t.length)for(g=0;g<t.length;g+=2){l=void 0;if(this.db){l=this.index.get(t[g]);if(!l)continue;k.push(l=l.db.tag(t[g+1],b,w,f))}else l=
 ub.call(this,t[g],t[g+1],b,w,f);e.push({field:t[g],tag:t[g+1],result:l})}return k.length?Promise.all(k).then(function(P){for(var Q=0;Q<P.length;Q++)e[Q].result=P[Q];return e}):e}}n&&n.constructor!==Array&&(n=[n])}n||(n=this.field);t=!d&&(this.worker||this.db)&&[];A=0;for(y=z=v=void 0;A<n.length;A++)if(z=n[A],!this.db||!this.tag||this.J[A]){v=void 0;K(z)||(v=z,z=v.field,a=v.query||a,b=v.limit||b,w=v.offset||w,q=v.suggest||q,f=this.store&&(v.enrich||f));if(d)v=d[A];else{y=v||c;v=this.index.get(z);if(p){if(this.db){y.tag=
-p;var Ja=v.db.support_tag_search;y.field=n}Ja||(y.enrich=!1)}if(t){t[A]=v.search(a,b,y);y&&f&&(y.enrich=f);continue}else v=v.search(a,b,y),y&&f&&(y.enrich=f)}y=v&&(k?v.length:v.result.length);if(p&&y){D=[];H=0;if(this.db&&d){if(!Ja)for(I=n.length;I<d.length;I++){var M=d[I];if(M&&M.length)H++,D.push(M);else if(!q)return k?e:new X(e)}}else{I=0;for(var Yb=M=void 0;I<p.length;I+=2){M=this.tag.get(p[I]);if(!M)if(q)continue;else return k?e:new X(e);if(Yb=(M=M&&M.get(p[I+1]))&&M.length)H++,D.push(M);else if(!q)return k?
-e:new X(e)}}if(H){v=lb(v,D,k);y=v.length;if(!y&&!q)return k?v:new X(v);H--}}if(y)g[h]=z,e.push(v),h++;else if(1===n.length)return k?e:new X(e)}if(t){if(this.db&&p&&p.length&&!Ja)for(f=0;f<p.length;f+=2){g=this.index.get(p[f]);if(!g)if(q)continue;else return k?e:new X(e);t.push(g.db.tag(p[f+1],b,w,!1))}var Zb=this;return Promise.all(t).then(function(P){return P.length?Zb.search(a,b,c,P):P})}if(!h)return k?e:new X(e);if(l&&(!f||!this.store))return e[0];t=[];for(w=0;w<g.length;w++){q=e[w];f&&q.length&&
-"undefined"===typeof q[0].doc&&(this.db?t.push(q=this.index.get(this.field[0]).db.enrich(q)):q=W.call(this,q));if(l)return k?q:new X(q);e[w]={field:g[w],result:q}}if(f&&this.db&&t.length){var Ka=this;return Promise.all(t).then(function(P){for(var Q=0;Q<P.length;Q++)e[Q].result=P[Q];return m?vb(e,b):r?wb(e,a,Ka.index,Ka.field,Ka.J,r):e})}return m?vb(e,b):r?wb(e,a,this.index,this.field,this.J,r):e};
+p;var Ka=v.db.support_tag_search;y.field=n}Ka||(y.enrich=!1)}if(t){t[A]=v.search(a,b,y);y&&f&&(y.enrich=f);continue}else v=v.search(a,b,y),y&&f&&(y.enrich=f)}y=v&&(k?v.length:v.result.length);if(p&&y){D=[];H=0;if(this.db&&d){if(!Ka)for(I=n.length;I<d.length;I++){var M=d[I];if(M&&M.length)H++,D.push(M);else if(!q)return k?e:new X(e)}}else{I=0;for(var Xb=M=void 0;I<p.length;I+=2){M=this.tag.get(p[I]);if(!M)if(q)continue;else return k?e:new X(e);if(Xb=(M=M&&M.get(p[I+1]))&&M.length)H++,D.push(M);else if(!q)return k?
+e:new X(e)}}if(H){v=lb(v,D,k);y=v.length;if(!y&&!q)return k?v:new X(v);H--}}if(y)g[h]=z,e.push(v),h++;else if(1===n.length)return k?e:new X(e)}if(t){if(this.db&&p&&p.length&&!Ka)for(f=0;f<p.length;f+=2){g=this.index.get(p[f]);if(!g)if(q)continue;else return k?e:new X(e);t.push(g.db.tag(p[f+1],b,w,!1))}var Yb=this;return Promise.all(t).then(function(P){return P.length?Yb.search(a,b,c,P):P})}if(!h)return k?e:new X(e);if(l&&(!f||!this.store))return e[0];t=[];for(w=0;w<g.length;w++){q=e[w];f&&q.length&&
+"undefined"===typeof q[0].doc&&(this.db?t.push(q=this.index.get(this.field[0]).db.enrich(q)):q=W.call(this,q));if(l)return k?q:new X(q);e[w]={field:g[w],result:q}}if(f&&this.db&&t.length){var La=this;return Promise.all(t).then(function(P){for(var Q=0;Q<P.length;Q++)e[Q].result=P[Q];return m?vb(e,b):r?wb(e,a,La.index,La.field,La.J,r):e})}return m?vb(e,b):r?wb(e,a,this.index,this.field,this.J,r):e};
 function wb(a,b,c,d,e,g){for(var f,h,k,l=0,m,n;l<a.length;l++){var p=a[l].result;m=a[l].field;k=c.get(m);n=k.encoder;k=k.tokenize;m=e[d.indexOf(m)];n!==f&&(f=n,h=f.encode(b));for(n=0;n<p.length;n++){var q="",r=ya(p[n].doc,m),w=f.encode(r);r=r.split(f.split);for(var t=0,A,z;t<w.length;t++)if(A=w[t],z=r[t],A&&z){for(var v=void 0,y=0,D;y<h.length;y++)if(D=h[y],"strict"===k){if(A===D){q+=(q?" ":"")+g.replace("$1",z);v=!0;break}}else{var H=A.indexOf(D);if(-1<H){q+=(q?" ":"")+z.substring(0,H)+g.replace("$1",
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 function ub(a,b,c,d,e){a=this.tag.get(a);if(!a)return[];if((b=(a=a&&a.get(b))&&a.length-d)&&0<b){if(b>c||d)a=a.slice(d,d+c);e&&(a=W.call(this,a));return a}}function W(a){if(!this||!this.store)return 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)};return b};function V(a){if(!this||this.constructor!==V)return new V(a);var b=a.document||a.doc||a,c,d;this.J=[];this.field=[];this.S=[];this.key=(c=b.key||b.id)&&xb(c,this.S)||"id";(d=a.keystore||0)&&(this.keystore=d);this.fastupdate=!!a.fastupdate;this.reg=!this.fastupdate||a.worker||a.db?d?new U(d):new Set:d?new T(d):new Map;this.I=(c=b.store||null)&&c&&!0!==c&&[];this.store=c&&(d?new T(d):new Map);this.cache=(c=a.cache||null)&&new Y(c);a.cache=!1;this.worker=a.worker;this.priority=a.priority||4;this.index=
@@ -96,31 +96,30 @@ function yb(a,b){var c=new Map,d=b.index||b.field||b;K(d)&&(d=[d]);for(var e=0,g
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+function Lb(a,b,c,d,e,g,f){a=Mb(this,a,b,c,d,e,g,f);return this.db?a.then(function(h){return e?h||[]:new X(h)}):a&&a.length?e?mb.call(this,a,c,d):new X(a):e?[]:new X}function Nb(a,b,c,d){var e=[];if(a&&a.length){if(a.length<=d){b.push(a);return}for(var g=0,f;g<d;g++)if(f=a[g])e[g]=f;if(e.length){b.push(e);return}}if(!c)return e}function Mb(a,b,c,d,e,g,f,h){var k;c&&(k=a.bidirectional&&b>c)&&(k=c,c=b,b=k);if(a.db)return a.db.get(b,c,d,e,g,f,h);a=c?(a=a.ctx.get(c))&&a.get(b):a.map.get(b);return a};O.prototype.remove=function(a,b){var c=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(c){if(this.fastupdate)for(var d=0,e;d<c.length;d++){if(e=c[d])if(2>e.length)e.pop();else{var g=e.indexOf(a);g===c.length-1?e.pop():e.splice(g,1)}}else Pb(this.map,a),this.depth&&Pb(this.ctx,a);b||this.reg.delete(a)}this.db&&(this.commit_task.push({del:a}),this.ca&&Kb(this));this.cache&&this.cache.remove(a);return this};
+function Pb(a,b){var c=0;if(a.constructor===Array)for(var d=0,e=void 0,g;d<a.length;d++){if((e=a[d])&&e.length)if(g=e.indexOf(b),0<=g){1<e.length?(e.splice(g,1),c++):delete a[d];break}else c++}else for(d=x(a.entries()),e=d.next();!e.done;e=d.next())g=e.value,e=g[0],(g=Pb(g[1],b))?c+=g:a.delete(e);return c};function O(a,b){if(!this||this.constructor!==O)return new O(a);if(a){var c=K(a)?a:a.preset;c&&(a=Object.assign({},Hb[c],a))}else a={};c=a.context;var d=!0===c?{depth:1}:c||{},e=K(a.encoder)?Gb[a.encoder]:a.encode||a.encoder||{};this.encoder=e.encode?e:"object"===typeof e?new Fa(e):{encode:e};this.resolution=a.resolution||9;this.tokenize=c=(c=a.tokenize)&&"default"!==c&&"exact"!==c&&c||"strict";this.depth="strict"===c&&d.depth||0;this.bidirectional=!1!==d.bidirectional;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.da=d.resolution||3;this.rtl=e.rtl||a.rtl||!1;this.cache=(c=a.cache||null)&&new Y(c);this.resolve=!1!==a.resolve;if(c=a.db)this.db=this.mount(c);this.ca=!1!==a.commit;this.commit_task=[];this.commit_timer=null;this.priority=a.priority||4}u=O.prototype;
-u.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};u.commit=function(a,b){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,b)};u.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function Lb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
+u.mount=function(a){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return a.mount(this)};u.commit=function(a,b){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.commit(this,a,b)};u.destroy=function(){this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null);return this.db.destroy()};function Kb(a){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null;a.db.commit(a,void 0,void 0)},1))}
 u.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();this.cache&&this.cache.clear();this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]);return this};u.append=function(a,b){return this.add(a,b,!0)};u.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)};u.update=function(a,b){var c=this,d=this.remove(a);return d&&d.then?d.then(function(){return c.add(a,b)}):this.add(a,b)};
-function Rb(a){var b=0;if(a.constructor===Array)for(var c=0,d=void 0;c<a.length;c++)(d=a[c])&&(b+=d.length);else for(c=x(a.entries()),d=c.next();!d.done;d=c.next()){var e=d.value;d=e[0];(e=Rb(e[1]))?b+=e:a.delete(d)}return b}u.cleanup=function(){if(!this.fastupdate)return this;Rb(this.map);this.depth&&Rb(this.ctx);return this};u.searchCache=zb;
+function Qb(a){var b=0;if(a.constructor===Array)for(var c=0,d=void 0;c<a.length;c++)(d=a[c])&&(b+=d.length);else for(c=x(a.entries()),d=c.next();!d.done;d=c.next()){var e=d.value;d=e[0];(e=Qb(e[1]))?b+=e:a.delete(d)}return b}u.cleanup=function(){if(!this.fastupdate)return this;Qb(this.map);this.depth&&Qb(this.ctx);return this};u.searchCache=zb;
 u.export=function(a,b,c,d){c=void 0===c?0:c;d=void 0===d?0:d;switch(d){case 0:var e="reg";var g=Ya(this.reg);break;case 1:e="cfg";g=null;break;case 2:e="map";g=Ua(this.map,this.reg.size);break;case 3:e="ctx";g=Wa(this.ctx,this.reg.size);break;default:return}return $a.call(this,a,b,e,g,c,d)};
 u.import=function(a,b){if(b)switch("string"===typeof b&&(b=JSON.parse(b)),a=a.split("."),"json"===a[a.length-1]&&a.pop(),3===a.length&&a.shift(),a=1<a.length?a[1]:a[0],a){case "reg":this.fastupdate=!1;this.reg=Za(b,this.reg);break;case "map":this.map=Va(b,this.map);break;case "ctx":this.ctx=Xa(b,this.ctx)}};
 u.serialize=function(a){a=void 0===a?!0:a;var b="",c="",d="";if(this.reg.size){var e;c=x(this.reg.keys());for(var g=c.next();!g.done;g=c.next())g=g.value,e||(e=typeof g),b+=(b?",":"")+("string"===e?'"'+g+'"':g);b="index.reg=new Set(["+b+"]);";c=ab(this.map,e);c="index.map=new Map(["+c+"]);";g=x(this.ctx.entries());for(var f=g.next();!f.done;f=g.next()){var h=f.value;f=h[0];h=ab(h[1],e);h="new Map(["+h+"])";h='["'+f+'",'+h+"]";d+=(d?",":"")+h}d="index.ctx=new Map(["+d+"]);"}return a?"function inject(index){"+
-b+c+d+"}":b+c+d};La(O.prototype);var Sb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),Tb=["map","ctx","tag","reg","cfg"],Ub=J();
-function Vb(a,b){b=void 0===b?{}:b;if(!this)return new Vb(a,b);"object"===typeof a&&(b=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=b.field?b.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=b.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}u=Vb.prototype;u.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
-u.open=function(){if(this.db)return this.db;var a=this;navigator.storage&&navigator.storage.persist();Ub[a.id]||(Ub[a.id]=[]);Ub[a.id].push(a.field);var b=Sb.open(a.id,1);b.onupgradeneeded=function(){for(var c=a.db=this.result,d=0,e;d<Tb.length;d++){e=Tb[d];for(var g=0,f;g<Ub[a.id].length;g++)f=Ub[a.id][g],c.objectStoreNames.contains(e+("reg"!==e?f?":"+f:"":""))||c.createObjectStore(e+("reg"!==e?f?":"+f:"":""))}};return a.db=Z(b,function(c){a.db=c;a.db.onversionchange=function(){a.close()}})};
-u.close=function(){this.db&&this.db.close();this.db=null};u.destroy=function(){var a=Sb.deleteDatabase(this.id);return Z(a)};u.clear=function(){for(var a=[],b=0,c;b<Tb.length;b++){c=Tb[b];for(var d=0,e;d<Ub[this.id].length;d++)e=Ub[this.id][d],a.push(c+("reg"!==c?e?":"+e:"":""))}b=this.db.transaction(a,"readwrite");for(c=0;c<a.length;c++)b.objectStore(a[c]).clear();return Z(b)};
+b+c+d+"}":b+c+d};Ja(O.prototype);var Rb="undefined"!==typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),Sb=["map","ctx","tag","reg","cfg"],Tb=J();
+function Ub(a,b){b=void 0===b?{}:b;if(!this)return new Ub(a,b);"object"===typeof a&&(b=a,a=a.name);a||console.info("Default storage space was used, because a name was not passed.");this.id="flexsearch"+(a?":"+a.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"");this.field=b.field?b.field.toLowerCase().replace(/[^a-z0-9_\-]/g,""):"";this.type=b.type;this.fastupdate=this.support_tag_search=!1;this.db=null;this.h={}}u=Ub.prototype;u.mount=function(a){if(!a.encoder)return a.mount(this);a.db=this;return this.open()};
+u.open=function(){if(this.db)return this.db;var a=this;navigator.storage&&navigator.storage.persist();Tb[a.id]||(Tb[a.id]=[]);Tb[a.id].push(a.field);var b=Rb.open(a.id,1);b.onupgradeneeded=function(){for(var c=a.db=this.result,d=0,e;d<Sb.length;d++){e=Sb[d];for(var g=0,f;g<Tb[a.id].length;g++)f=Tb[a.id][g],c.objectStoreNames.contains(e+("reg"!==e?f?":"+f:"":""))||c.createObjectStore(e+("reg"!==e?f?":"+f:"":""))}};return a.db=Z(b,function(c){a.db=c;a.db.onversionchange=function(){a.close()}})};
+u.close=function(){this.db&&this.db.close();this.db=null};u.destroy=function(){var a=Rb.deleteDatabase(this.id);return Z(a)};u.clear=function(){for(var a=[],b=0,c;b<Sb.length;b++){c=Sb[b];for(var d=0,e;d<Tb[this.id].length;d++)e=Tb[this.id][d],a.push(c+("reg"!==c?e?":"+e:"":""))}b=this.db.transaction(a,"readwrite");for(c=0;c<a.length;c++)b.objectStore(a[c]).clear();return Z(b)};
 u.get=function(a,b,c,d,e,g){c=void 0===c?0:c;d=void 0===d?0:d;e=void 0===e?!0:e;g=void 0===g?!1:g;a=this.db.transaction((b?"ctx":"map")+(this.field?":"+this.field:""),"readonly").objectStore((b?"ctx":"map")+(this.field?":"+this.field:"")).get(b?b+":"+a:a);var f=this;return Z(a).then(function(h){var k=[];if(!h||!h.length)return k;if(e){if(!c&&!d&&1===h.length)return h[0];for(var l=0,m=void 0;l<h.length;l++)if((m=h[l])&&m.length)if(d>=m.length)d-=m.length;else{for(var n=c?d+Math.min(m.length-d,c):m.length,
 p=d;p<n;p++)k.push(m[p]);d=0;if(k.length===c)break}return g?f.enrich(k):k}return h})};u.tag=function(a,b,c,d){b=void 0===b?0:b;c=void 0===c?0:c;d=void 0===d?!1:d;a=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly").objectStore("tag"+(this.field?":"+this.field:"")).get(a);var e=this;return Z(a).then(function(g){if(!g||!g.length||c>=g.length)return[];if(!b&&!c)return g;g=g.slice(c,c+b);return d?e.enrich(g):g})};
 u.enrich=function(a){"object"!==typeof a&&(a=[a]);for(var b=this.db.transaction("reg","readonly").objectStore("reg"),c=[],d=0;d<a.length;d++)c[d]=Z(b.get(a[d]));return Promise.all(c).then(function(e){for(var g=0;g<e.length;g++)e[g]={id:a[g],doc:e[g]?JSON.parse(e[g]):null};return e})};u.has=function(a){a=this.db.transaction("reg","readonly").objectStore("reg").getKey(a);return Z(a).then(function(b){return!!b})};u.search=null;u.info=function(){};
@@ -130,6 +129,6 @@ u.commit=function(a,b,c){var d=this,e,g,f;return ta(function(h){switch(h.h){case
 function(k){for(var l=x(a.ctx),m=l.next(),n={};!m.done;n={V:void 0},m=l.next()){m=m.value;n.V=m[0];m=x(m[1]);for(var p=m.next(),q={};!p.done;q={P:void 0,Z:void 0},p=m.next())p=p.value,q.Z=p[0],q.P=p[1],q.P.length&&(b?k.put(q.P,n.V+":"+q.Z):k.get(n.V+":"+q.Z).onsuccess=function(r,w){return function(){var t=this.result,A;if(t&&t.length)for(var z=Math.max(t.length,r.P.length),v=0,y;v<z;v++){if((y=r.P[v])&&y.length){if((A=t[v])&&A.length)for(var D=0;D<y.length;D++)A.push(y[D]);else t[v]=y;A=1}}else t=
 r.P,A=1;A&&k.put(t,w.V+":"+r.Z)}}(q,n))}}),14);case 14:if(a.store)return E(h,d.transaction("reg","readwrite",function(k){for(var l=x(a.store),m=l.next();!m.done;m=l.next()){var n=m.value;m=n[0];n=n[1];k.put("object"===typeof n?JSON.stringify(n):1,m)}}),16);if(a.bypass){h.h=16;break}return E(h,d.transaction("reg","readwrite",function(k){for(var l=x(a.reg.keys()),m=l.next();!m.done;m=l.next())k.put(1,m.value)}),16);case 16:if(!a.tag){h.h=20;break}return E(h,d.transaction("tag","readwrite",function(k){for(var l=
 x(a.tag),m=l.next(),n={};!m.done;n={X:void 0,ba:void 0},m=l.next())m=m.value,n.ba=m[0],n.X=m[1],n.X.length&&(k.get(n.ba).onsuccess=function(p){return function(){var q=this.result;q=q&&q.length?q.concat(p.X):p.X;k.put(q,p.ba)}}(n))}),20);case 20:a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear(),h.h=0}})};
-function Wb(a,b,c){for(var d=a.value,e,g=0,f=0,h;f<d.length;f++){if(h=c?d:d[f]){for(var k=0,l;k<b.length;k++)if(l=b[k],l=h.indexOf(l),0<=l)if(e=1,1<h.length)h.splice(l,1);else{d[f]=[];break}g+=h.length}if(c)break}g?e&&a.update(d):a.delete();a.continue()}
-u.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Wb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Wb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Wb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(var c=0;c<a.length;c++)b.delete(a[c])})])};
-function Z(a,b){return new Promise(function(c,d){a.onsuccess=a.oncomplete=function(){b&&b(this.result);b=null;c(this.result)};a.onerror=a.onblocked=d;a=null})};var Xb={Index:O,Charset:Hb,Encoder:Fa,Document:V,Worker:Sa,Resolver:X,IndexedDB:Vb,Language:{}},$b="undefined"!==typeof self?self:"undefined"!==typeof global?global:self,ac;(ac=$b.define)&&ac.amd?ac([],function(){return Xb}):"object"===typeof $b.exports?$b.exports=Xb:$b.FlexSearch=Xb;}(this||self));
+function Vb(a,b,c){for(var d=a.value,e,g=0,f=0,h;f<d.length;f++){if(h=c?d:d[f]){for(var k=0,l;k<b.length;k++)if(l=b[k],l=h.indexOf(l),0<=l)if(e=1,1<h.length)h.splice(l,1);else{d[f]=[];break}g+=h.length}if(c)break}g?e&&a.update(d):a.delete();a.continue()}
+u.remove=function(a){"object"!==typeof a&&(a=[a]);return Promise.all([this.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Vb(c,a)}}),this.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Vb(c,a)}}),this.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){var c=this.result;c&&Vb(c,a,!0)}}),this.transaction("reg","readwrite",function(b){for(var c=0;c<a.length;c++)b.delete(a[c])})])};
+function Z(a,b){return new Promise(function(c,d){a.onsuccess=a.oncomplete=function(){b&&b(this.result);b=null;c(this.result)};a.onerror=a.onblocked=d;a=null})};var Wb={Index:O,Charset:Gb,Encoder:Fa,Document:V,Worker:Sa,Resolver:X,IndexedDB:Ub,Language:{}},Zb="undefined"!==typeof self?self:"undefined"!==typeof global?global:self,$b;($b=Zb.define)&&$b.amd?$b([],function(){return Wb}):"object"===typeof Zb.exports?Zb.exports=Wb:Zb.FlexSearch=Wb;}(this||self));
diff --git a/dist/flexsearch.light.debug.js b/dist/flexsearch.light.debug.js
index 90a071b..094af2e 100644
--- a/dist/flexsearch.light.debug.js
+++ b/dist/flexsearch.light.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Light/Debug)
+ * FlexSearch.js v0.8.147 (Light/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -265,9 +265,8 @@ function G(a) {
   return f = 1 < f.length ? [].concat.apply([], f) : f[0];
 }
 ;w();
-const I = {normalize:!0};
-const J = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
-K.prototype.add = function(a, d, b, f) {
+const I = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+J.prototype.add = function(a, d, b, f) {
   if (d && (a || 0 === a)) {
     if (!f && !b && this.reg.has(a)) {
       return this.update(a, d);
@@ -279,7 +278,7 @@ K.prototype.add = function(a, d, b, f) {
         let l = d[this.rtl ? f - 1 - p : p];
         var c = l.length;
         if (c && (v || !m[l])) {
-          var g = this.score ? this.score(d, l, p, null, 0) : L(C, f, p), e = "";
+          var g = this.score ? this.score(d, l, p, null, 0) : K(C, f, p), e = "";
           switch(this.tokenize) {
             case "full":
               if (2 < c) {
@@ -287,8 +286,8 @@ K.prototype.add = function(a, d, b, f) {
                   for (g = c; g > q; g--) {
                     e = l.substring(q, g);
                     t = this.rtl ? c - 1 - q : q;
-                    var h = this.score ? this.score(d, l, p, e, t) : L(C, f, p, c, t);
-                    M(this, m, e, h, a, b);
+                    var h = this.score ? this.score(d, l, p, e, t) : K(C, f, p, c, t);
+                    L(this, m, e, h, a, b);
                   }
                 }
                 break;
@@ -298,25 +297,25 @@ K.prototype.add = function(a, d, b, f) {
               if (1 < c) {
                 for (h = c - 1; 0 < h; h--) {
                   e = l[this.rtl ? c - 1 - h : h] + e;
-                  var k = this.score ? this.score(d, l, p, e, h) : L(C, f, p, c, h);
-                  M(this, m, e, k, a, b);
+                  var k = this.score ? this.score(d, l, p, e, h) : K(C, f, p, c, h);
+                  L(this, m, e, k, a, b);
                 }
                 e = "";
               }
             case "forward":
               if (1 < c) {
                 for (h = 0; h < c; h++) {
-                  e += l[this.rtl ? c - 1 - h : h], M(this, m, e, g, a, b);
+                  e += l[this.rtl ? c - 1 - h : h], L(this, m, e, g, a, b);
                 }
                 break;
               }
             default:
-              if (M(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
+              if (L(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
                 for (c = w(), e = this.v, g = l, h = Math.min(v + 1, this.rtl ? p + 1 : f - p), c[g] = 1, k = 1; k < h; k++) {
                   if ((l = d[this.rtl ? f - 1 - p - k : p + k]) && !c[l]) {
                     c[l] = 1;
-                    const q = this.score ? this.score(d, g, p, l, k - 1) : L(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
-                    M(this, n, t ? g : l, q, a, b, t ? l : g);
+                    const q = this.score ? this.score(d, g, p, l, k - 1) : K(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
+                    L(this, n, t ? g : l, q, a, b, t ? l : g);
                   }
                 }
               }
@@ -328,16 +327,16 @@ K.prototype.add = function(a, d, b, f) {
   }
   return this;
 };
-function M(a, d, b, f, c, g, e) {
+function L(a, d, b, f, c, g, e) {
   let h = e ? a.ctx : a.map, k;
   if (!d[b] || e && !(k = d[b])[e]) {
     e ? (d = k || (d[b] = w()), d[e] = 1, (k = h.get(e)) ? h = k : h.set(e, h = new Map())) : d[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[f] || (h[f] = []), g && h.includes(c) || (h.push(c), a.fastupdate && ((d = a.reg.get(c)) ? d.push(h) : a.reg.set(c, [h])));
   }
 }
-function L(a, d, b, f, c) {
+function K(a, d, b, f, c) {
   return b && 1 < a ? d + (f || 0) <= a ? b + (c || 0) : (a - 1) / (d + (f || 0)) * (b + (c || 0)) + 1 | 0 : 0;
 }
-;K.prototype.search = function(a, d, b) {
+;J.prototype.search = function(a, d, b) {
   b || (d || "object" !== typeof a ? "object" === typeof d && (b = d, d = 0) : (b = a, a = ""));
   var f = [], c = 0;
   if (b) {
@@ -355,11 +354,11 @@ function L(a, d, b, f, c) {
   b = a.length;
   d = d || (h ? 100 : 0);
   if (1 === b) {
-    return e = c, (c = N(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = M(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
   }
   g = this.depth && !1 !== g;
   if (2 === b && g && !e) {
-    return e = c, (c = N(this, a[0], a[1])) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = M(this, a[1], a[0])) && c.length ? H.call(this, c, d, e) : [];
   }
   h = w();
   var n = 0;
@@ -371,7 +370,7 @@ function L(a, d, b, f, c) {
   for (let l, q; n < b; n++) {
     if ((q = a[n]) && !h[q]) {
       h[q] = 1;
-      l = N(this, q, m);
+      l = M(this, q, m);
       a: {
         g = l;
         var v = f, C = e, p = k;
@@ -472,13 +471,13 @@ function L(a, d, b, f, c) {
   }
   return d;
 };
-function N(a, d, b) {
+function M(a, d, b) {
   let f;
   b && (f = a.bidirectional && d > b) && (f = b, b = d, d = f);
   a = b ? (a = a.ctx.get(b)) && a.get(d) : a.map.get(d);
   return a;
 }
-;K.prototype.remove = function(a, d) {
+;J.prototype.remove = function(a, d) {
   const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
   if (b) {
     if (this.fastupdate) {
@@ -493,13 +492,13 @@ function N(a, d, b) {
         }
       }
     } else {
-      O(this.map, a), this.depth && O(this.ctx, a);
+      N(this.map, a), this.depth && N(this.ctx, a);
     }
     d || this.reg.delete(a);
   }
   return this;
 };
-function O(a, d) {
+function N(a, d) {
   let b = 0;
   if (a.constructor === Array) {
     for (let f = 0, c, g; f < a.length; f++) {
@@ -514,24 +513,24 @@ function O(a, d) {
     }
   } else {
     for (let f of a.entries()) {
-      const c = f[0], g = O(f[1], d);
+      const c = f[0], g = N(f[1], d);
       g ? b += g : a.delete(c);
     }
   }
   return b;
 }
-;function K(a, d) {
-  if (!this || this.constructor !== K) {
-    return new K(a);
+;function J(a, d) {
+  if (!this || this.constructor !== J) {
+    return new J(a);
   }
   if (a) {
     var b = "string" === typeof a ? a : a.preset;
-    b && (J[b] || console.warn("Preset not found: " + b), a = Object.assign({}, J[b], a));
+    b && (I[b] || console.warn("Preset not found: " + b), a = Object.assign({}, I[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const f = !0 === b ? {depth:1} : b || {}, c = a.encode || a.encoder || I;
+  const f = !0 === b ? {depth:1} : b || {}, c = a.encode || a.encoder || {};
   this.encoder = c.encode ? c : "object" === typeof c ? new F(c) : {encode:c};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -546,7 +545,7 @@ function O(a, d) {
   this.v = f.resolution || 3;
   this.rtl = c.rtl || a.rtl || !1;
 }
-r = K.prototype;
+r = J.prototype;
 r.clear = function() {
   this.map.clear();
   this.ctx.clear();
@@ -563,7 +562,7 @@ r.update = function(a, d) {
   const b = this, f = this.remove(a);
   return f && f.then ? f.then(() => b.add(a, d)) : this.add(a, d);
 };
-function P(a) {
+function O(a) {
   let d = 0;
   if (a.constructor === Array) {
     for (let b = 0, f; b < a.length; b++) {
@@ -571,7 +570,7 @@ function P(a) {
     }
   } else {
     for (const b of a.entries()) {
-      const f = b[0], c = P(b[1]);
+      const f = b[0], c = O(b[1]);
       c ? d += c : a.delete(f);
     }
   }
@@ -581,14 +580,14 @@ r.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  P(this.map);
-  this.depth && P(this.ctx);
+  O(this.map);
+  this.depth && O(this.ctx);
   return this;
 };
 w();
-const Q = {Index:K, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, R = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
-let S;
-(S = R.define) && S.amd ? S([], function() {
-  return Q;
-}) : "object" === typeof R.exports ? R.exports = Q : R.FlexSearch = Q;
+const P = {Index:J, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}}, Q = "undefined" !== typeof self ? self : "undefined" !== typeof global ? global : self;
+let R;
+(R = Q.define) && R.amd ? R([], function() {
+  return P;
+}) : "object" === typeof Q.exports ? Q.exports = P : Q.FlexSearch = P;
 }(this||self));
diff --git a/dist/flexsearch.light.min.js b/dist/flexsearch.light.min.js
index 262aacc..fb81e3f 100644
--- a/dist/flexsearch.light.min.js
+++ b/dist/flexsearch.light.min.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Light)
+ * FlexSearch.js v0.8.147 (Light)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -15,12 +15,12 @@ r.addReplacer=function(a,d){if("string"===typeof a)return this.addMatcher(a,d);t
 r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.i.has(a))return this.i.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=E?a.normalize("NFKD").replace(E,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(B,"$1 $2").replace(D,"$1 $2").replace(z,"$1 "));const d=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],f=
 this.split||""===this.split?a.split(this.split):a;for(let g=0,e,h;g<f.length;g++)if((e=h=f[g])&&!(e.length<this.minlength))if(d)b.push(e);else if(!this.filter||("function"===typeof this.filter?this.filter(e):!this.filter.has(e))){if(this.cache&&e.length<=this.o)if(this.l){var c=this.j.get(e);if(c||""===c){c&&b.push(c);continue}}else this.l=setTimeout(G,50,this);this.stemmer&&2<e.length&&(this.u||(this.u=new RegExp("(?!^)("+this.h+")$")),c=e,e=e.replace(this.u,k=>this.stemmer.get(k)),c!==e&&this.filter&&
 e.length>=this.minlength&&("function"===typeof this.filter?!this.filter(e):this.filter.has(e))&&(e=""));if(e&&(this.mapper||this.dedupe&&1<e.length)){c="";for(let k=0,n="",m,v;k<e.length;k++)m=e.charAt(k),m===n&&this.dedupe||((v=this.mapper&&this.mapper.get(m))||""===v?v===n&&this.dedupe||!(n=v)||(c+=v):c+=n=m);e=c}this.matcher&&1<e.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),e=e.replace(this.s,k=>this.matcher.get(k)));if(e&&this.replacer)for(c=0;e&&c<this.replacer.length;c+=2)e=e.replace(this.replacer[c],
-this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();const I={normalize:!0};const J={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};K.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,C=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):L(C,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):L(C,f,p,c,t);M(this,
-m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):L(C,f,p,c,h);M(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],M(this,m,e,g,a,b);break}default:if(M(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):L(e+(f/2>e?0:1),f,p,h-1,k-1),
-t=this.bidirectional&&l>g;M(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function M(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function L(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};K.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=N(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=N(this,a[0],a[1]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
-0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=N(this,q,m);a:{g=l;var v=f,C=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,A;x<p;x++)if(A=g[x])t[x]=A;if(t.length){v.push(t);l=void 0;break a}}l=C?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,A;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
+this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();const I={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};J.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,C=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):K(C,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):K(C,f,p,c,t);L(this,
+m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):K(C,f,p,c,h);L(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],L(this,m,e,g,a,b);break}default:if(L(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):K(e+(f/2>e?0:1),f,p,h-1,k-1),
+t=this.bidirectional&&l>g;L(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function L(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function K(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};J.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=M(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=M(this,a[1],a[0]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
+0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=M(this,q,m);a:{g=l;var v=f,C=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,A;x<p;x++)if(A=g[x])t[x]=A;if(t.length){v.push(t);l=void 0;break a}}l=C?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,A;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
 x.length&&(q=x[l]))for(g=0;g<q.length;g++)if(t=q[g],(h=b[t])?b[t]++:(h=0,b[t]=1),A=e[h]||(e[h]=[]),A.push(t),d&&h===m-1&&A.length-c===d){m=A;break b}if(a=e.length)if(f){if(1<e.length)c:for(a=[],k=w(),f=e.length,h=f-1;0<=h;h--){if(b=(f=e[h])&&f.length)for(n=0;n<b;n++)if(m=f[n],!k[m])if(k[m]=1,c)c--;else if(a.push(m),a.length===d)break c}else a=(e=e[0]).length>d||c?e.slice(c,d+c):e;e=a}else{if(a<m){m=[];break b}e=e[a-1];if(d||c)if(e.length>d||c)e=e.slice(c,d+c)}m=e}else if(1===f){d=H.call(null,a[0],
-d,c);break a}d=m}return d};function N(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};K.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else O(this.map,a),this.depth&&O(this.ctx,a);d||this.reg.delete(a)}return this};
-function O(a,d){let b=0;if(a.constructor===Array)for(let f=0,c,g;f<a.length;f++){if((c=a[f])&&c.length)if(g=c.indexOf(d),0<=g){1<c.length?(c.splice(g,1),b++):delete a[f];break}else b++}else for(let f of a.entries()){const c=f[0],g=O(f[1],d);g?b+=g:a.delete(c)}return b};function K(a,d){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 f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||I;this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
-a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=K.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
-function P(a){let d=0;if(a.constructor===Array)for(let b=0,f;b<a.length;b++)(f=a[b])&&(d+=f.length);else for(const b of a.entries()){const f=b[0],c=P(b[1]);c?d+=c:a.delete(f)}return d}r.cleanup=function(){if(!this.fastupdate)return this;P(this.map);this.depth&&P(this.ctx);return this};w();const Q={Index:K,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}},R="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let S;(S=R.define)&&S.amd?S([],function(){return Q}):"object"===typeof R.exports?R.exports=Q:R.FlexSearch=Q;}(this||self));
+d,c);break a}d=m}return d};function M(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};J.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else N(this.map,a),this.depth&&N(this.ctx,a);d||this.reg.delete(a)}return this};
+function N(a,d){let b=0;if(a.constructor===Array)for(let f=0,c,g;f<a.length;f++){if((c=a[f])&&c.length)if(g=c.indexOf(d),0<=g){1<c.length?(c.splice(g,1),b++):delete a[f];break}else b++}else for(let f of a.entries()){const c=f[0],g=N(f[1],d);g?b+=g:a.delete(c)}return b};function J(a,d){if(!this||this.constructor!==J)return new J(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},I[b],a))}else a={};b=a.context;const f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||{};this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
+a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=J.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
+function O(a){let d=0;if(a.constructor===Array)for(let b=0,f;b<a.length;b++)(f=a[b])&&(d+=f.length);else for(const b of a.entries()){const f=b[0],c=O(b[1]);c?d+=c:a.delete(f)}return d}r.cleanup=function(){if(!this.fastupdate)return this;O(this.map);this.depth&&O(this.ctx);return this};w();const P={Index:J,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}},Q="undefined"!==typeof self?self:"undefined"!==typeof global?global:self;let R;(R=Q.define)&&R.amd?R([],function(){return P}):"object"===typeof Q.exports?Q.exports=P:Q.FlexSearch=P;}(this||self));
diff --git a/dist/flexsearch.light.module.debug.js b/dist/flexsearch.light.module.debug.js
index 064cfa9..93e2141 100644
--- a/dist/flexsearch.light.module.debug.js
+++ b/dist/flexsearch.light.module.debug.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle/Debug)
+ * FlexSearch.js v0.8.147 (Bundle/Debug)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -264,9 +264,8 @@ function G(a) {
   return f = 1 < f.length ? [].concat.apply([], f) : f[0];
 }
 ;w();
-const I = {normalize:!0};
-const J = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
-K.prototype.add = function(a, d, b, f) {
+const I = {memory:{resolution:1}, performance:{resolution:3, fastupdate:!0, context:{depth:1, resolution:1}}, match:{tokenize:"forward"}, score:{resolution:9, context:{depth:2, resolution:3}}};
+J.prototype.add = function(a, d, b, f) {
   if (d && (a || 0 === a)) {
     if (!f && !b && this.reg.has(a)) {
       return this.update(a, d);
@@ -278,7 +277,7 @@ K.prototype.add = function(a, d, b, f) {
         let l = d[this.rtl ? f - 1 - p : p];
         var c = l.length;
         if (c && (v || !m[l])) {
-          var g = this.score ? this.score(d, l, p, null, 0) : L(C, f, p), e = "";
+          var g = this.score ? this.score(d, l, p, null, 0) : K(C, f, p), e = "";
           switch(this.tokenize) {
             case "full":
               if (2 < c) {
@@ -286,8 +285,8 @@ K.prototype.add = function(a, d, b, f) {
                   for (g = c; g > q; g--) {
                     e = l.substring(q, g);
                     t = this.rtl ? c - 1 - q : q;
-                    var h = this.score ? this.score(d, l, p, e, t) : L(C, f, p, c, t);
-                    M(this, m, e, h, a, b);
+                    var h = this.score ? this.score(d, l, p, e, t) : K(C, f, p, c, t);
+                    L(this, m, e, h, a, b);
                   }
                 }
                 break;
@@ -297,25 +296,25 @@ K.prototype.add = function(a, d, b, f) {
               if (1 < c) {
                 for (h = c - 1; 0 < h; h--) {
                   e = l[this.rtl ? c - 1 - h : h] + e;
-                  var k = this.score ? this.score(d, l, p, e, h) : L(C, f, p, c, h);
-                  M(this, m, e, k, a, b);
+                  var k = this.score ? this.score(d, l, p, e, h) : K(C, f, p, c, h);
+                  L(this, m, e, k, a, b);
                 }
                 e = "";
               }
             case "forward":
               if (1 < c) {
                 for (h = 0; h < c; h++) {
-                  e += l[this.rtl ? c - 1 - h : h], M(this, m, e, g, a, b);
+                  e += l[this.rtl ? c - 1 - h : h], L(this, m, e, g, a, b);
                 }
                 break;
               }
             default:
-              if (M(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
+              if (L(this, m, l, g, a, b), v && 1 < f && p < f - 1) {
                 for (c = w(), e = this.v, g = l, h = Math.min(v + 1, this.rtl ? p + 1 : f - p), c[g] = 1, k = 1; k < h; k++) {
                   if ((l = d[this.rtl ? f - 1 - p - k : p + k]) && !c[l]) {
                     c[l] = 1;
-                    const q = this.score ? this.score(d, g, p, l, k - 1) : L(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
-                    M(this, n, t ? g : l, q, a, b, t ? l : g);
+                    const q = this.score ? this.score(d, g, p, l, k - 1) : K(e + (f / 2 > e ? 0 : 1), f, p, h - 1, k - 1), t = this.bidirectional && l > g;
+                    L(this, n, t ? g : l, q, a, b, t ? l : g);
                   }
                 }
               }
@@ -327,16 +326,16 @@ K.prototype.add = function(a, d, b, f) {
   }
   return this;
 };
-function M(a, d, b, f, c, g, e) {
+function L(a, d, b, f, c, g, e) {
   let h = e ? a.ctx : a.map, k;
   if (!d[b] || e && !(k = d[b])[e]) {
     e ? (d = k || (d[b] = w()), d[e] = 1, (k = h.get(e)) ? h = k : h.set(e, h = new Map())) : d[b] = 1, (k = h.get(b)) ? h = k : h.set(b, h = []), h = h[f] || (h[f] = []), g && h.includes(c) || (h.push(c), a.fastupdate && ((d = a.reg.get(c)) ? d.push(h) : a.reg.set(c, [h])));
   }
 }
-function L(a, d, b, f, c) {
+function K(a, d, b, f, c) {
   return b && 1 < a ? d + (f || 0) <= a ? b + (c || 0) : (a - 1) / (d + (f || 0)) * (b + (c || 0)) + 1 | 0 : 0;
 }
-;K.prototype.search = function(a, d, b) {
+;J.prototype.search = function(a, d, b) {
   b || (d || "object" !== typeof a ? "object" === typeof d && (b = d, d = 0) : (b = a, a = ""));
   var f = [], c = 0;
   if (b) {
@@ -354,11 +353,11 @@ function L(a, d, b, f, c) {
   b = a.length;
   d = d || (h ? 100 : 0);
   if (1 === b) {
-    return e = c, (c = N(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = M(this, a[0], "")) && c.length ? H.call(this, c, d, e) : [];
   }
   g = this.depth && !1 !== g;
   if (2 === b && g && !e) {
-    return e = c, (c = N(this, a[0], a[1])) && c.length ? H.call(this, c, d, e) : [];
+    return e = c, (c = M(this, a[1], a[0])) && c.length ? H.call(this, c, d, e) : [];
   }
   h = w();
   var n = 0;
@@ -370,7 +369,7 @@ function L(a, d, b, f, c) {
   for (let l, q; n < b; n++) {
     if ((q = a[n]) && !h[q]) {
       h[q] = 1;
-      l = N(this, q, m);
+      l = M(this, q, m);
       a: {
         g = l;
         var v = f, C = e, p = k;
@@ -471,13 +470,13 @@ function L(a, d, b, f, c) {
   }
   return d;
 };
-function N(a, d, b) {
+function M(a, d, b) {
   let f;
   b && (f = a.bidirectional && d > b) && (f = b, b = d, d = f);
   a = b ? (a = a.ctx.get(b)) && a.get(d) : a.map.get(d);
   return a;
 }
-;K.prototype.remove = function(a, d) {
+;J.prototype.remove = function(a, d) {
   const b = this.reg.size && (this.fastupdate ? this.reg.get(a) : this.reg.has(a));
   if (b) {
     if (this.fastupdate) {
@@ -492,13 +491,13 @@ function N(a, d, b) {
         }
       }
     } else {
-      O(this.map, a), this.depth && O(this.ctx, a);
+      N(this.map, a), this.depth && N(this.ctx, a);
     }
     d || this.reg.delete(a);
   }
   return this;
 };
-function O(a, d) {
+function N(a, d) {
   let b = 0;
   if (a.constructor === Array) {
     for (let f = 0, c, g; f < a.length; f++) {
@@ -513,24 +512,24 @@ function O(a, d) {
     }
   } else {
     for (let f of a.entries()) {
-      const c = f[0], g = O(f[1], d);
+      const c = f[0], g = N(f[1], d);
       g ? b += g : a.delete(c);
     }
   }
   return b;
 }
-;function K(a, d) {
-  if (!this || this.constructor !== K) {
-    return new K(a);
+;function J(a, d) {
+  if (!this || this.constructor !== J) {
+    return new J(a);
   }
   if (a) {
     var b = "string" === typeof a ? a : a.preset;
-    b && (J[b] || console.warn("Preset not found: " + b), a = Object.assign({}, J[b], a));
+    b && (I[b] || console.warn("Preset not found: " + b), a = Object.assign({}, I[b], a));
   } else {
     a = {};
   }
   b = a.context;
-  const f = !0 === b ? {depth:1} : b || {}, c = a.encode || a.encoder || I;
+  const f = !0 === b ? {depth:1} : b || {}, c = a.encode || a.encoder || {};
   this.encoder = c.encode ? c : "object" === typeof c ? new F(c) : {encode:c};
   this.resolution = a.resolution || 9;
   this.tokenize = b = (b = a.tokenize) && "default" !== b && "exact" !== b && b || "strict";
@@ -545,7 +544,7 @@ function O(a, d) {
   this.v = f.resolution || 3;
   this.rtl = c.rtl || a.rtl || !1;
 }
-r = K.prototype;
+r = J.prototype;
 r.clear = function() {
   this.map.clear();
   this.ctx.clear();
@@ -562,7 +561,7 @@ r.update = function(a, d) {
   const b = this, f = this.remove(a);
   return f && f.then ? f.then(() => b.add(a, d)) : this.add(a, d);
 };
-function P(a) {
+function O(a) {
   let d = 0;
   if (a.constructor === Array) {
     for (let b = 0, f; b < a.length; b++) {
@@ -570,7 +569,7 @@ function P(a) {
     }
   } else {
     for (const b of a.entries()) {
-      const f = b[0], c = P(b[1]);
+      const f = b[0], c = O(b[1]);
       c ? d += c : a.delete(f);
     }
   }
@@ -580,11 +579,11 @@ r.cleanup = function() {
   if (!this.fastupdate) {
     return console.info('Cleanup the index isn\'t required when not using "fastupdate".'), this;
   }
-  P(this.map);
-  this.depth && P(this.ctx);
+  O(this.map);
+  this.depth && O(this.ctx);
   return this;
 };
 w();
-export default {Index:K, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
+export default {Index:J, Charset:null, Encoder:F, Document:null, Worker:null, Resolver:null, IndexedDB:null, Language:{}};
 
-export const Index=K;export const  Charset=null;export const  Encoder=F;export const  Document=null;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
+export const Index=J;export const  Charset=null;export const  Encoder=F;export const  Document=null;export const  Worker=null;export const  Resolver=null;export const  IndexedDB=null;export const  Language={};
\ No newline at end of file
diff --git a/dist/flexsearch.light.module.min.js b/dist/flexsearch.light.module.min.js
index 2567537..cb0057a 100644
--- a/dist/flexsearch.light.module.min.js
+++ b/dist/flexsearch.light.module.min.js
@@ -1,5 +1,5 @@
 /**!
- * FlexSearch.js v0.8.143 (Bundle)
+ * FlexSearch.js v0.8.147 (Bundle)
  * Author and Copyright: Thomas Wilkerling
  * Licence: Apache-2.0
  * Hosted by Nextapps GmbH
@@ -15,13 +15,13 @@ r.addReplacer=function(a,d){if("string"===typeof a)return this.addMatcher(a,d);t
 r.encode=function(a){if(this.cache&&a.length<=this.m)if(this.l){if(this.i.has(a))return this.i.get(a)}else this.l=setTimeout(G,50,this);this.normalize&&("function"===typeof this.normalize?a=this.normalize(a):a=E?a.normalize("NFKD").replace(E,"").toLowerCase():a.toLowerCase());this.prepare&&(a=this.prepare(a));this.numeric&&3<a.length&&(a=a.replace(B,"$1 $2").replace(D,"$1 $2").replace(z,"$1 "));const d=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let b=[],f=
 this.split||""===this.split?a.split(this.split):a;for(let g=0,e,h;g<f.length;g++)if((e=h=f[g])&&!(e.length<this.minlength))if(d)b.push(e);else if(!this.filter||("function"===typeof this.filter?this.filter(e):!this.filter.has(e))){if(this.cache&&e.length<=this.o)if(this.l){var c=this.j.get(e);if(c||""===c){c&&b.push(c);continue}}else this.l=setTimeout(G,50,this);this.stemmer&&2<e.length&&(this.u||(this.u=new RegExp("(?!^)("+this.h+")$")),c=e,e=e.replace(this.u,k=>this.stemmer.get(k)),c!==e&&this.filter&&
 e.length>=this.minlength&&("function"===typeof this.filter?!this.filter(e):this.filter.has(e))&&(e=""));if(e&&(this.mapper||this.dedupe&&1<e.length)){c="";for(let k=0,n="",m,v;k<e.length;k++)m=e.charAt(k),m===n&&this.dedupe||((v=this.mapper&&this.mapper.get(m))||""===v?v===n&&this.dedupe||!(n=v)||(c+=v):c+=n=m);e=c}this.matcher&&1<e.length&&(this.s||(this.s=new RegExp("("+this.g+")","g")),e=e.replace(this.s,k=>this.matcher.get(k)));if(e&&this.replacer)for(c=0;e&&c<this.replacer.length;c+=2)e=e.replace(this.replacer[c],
-this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();const I={normalize:!0};const J={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};K.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,C=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):L(C,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):L(C,f,p,c,t);M(this,
-m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):L(C,f,p,c,h);M(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],M(this,m,e,g,a,b);break}default:if(M(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):L(e+(f/2>e?0:1),f,p,h-1,k-1),
-t=this.bidirectional&&l>g;M(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function M(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function L(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};K.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=N(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=N(this,a[0],a[1]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
-0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=N(this,q,m);a:{g=l;var v=f,C=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,A;x<p;x++)if(A=g[x])t[x]=A;if(t.length){v.push(t);l=void 0;break a}}l=C?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,A;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
+this.replacer[c+1]);this.cache&&h.length<=this.o&&(this.j.set(h,e),this.j.size>this.A&&(this.j.clear(),this.o=this.o/1.1|0));e&&b.push(e)}this.finalize&&(b=this.finalize(b)||b);this.cache&&a.length<=this.m&&(this.i.set(a,b),this.i.size>this.A&&(this.i.clear(),this.m=this.m/1.1|0));return b};function G(a){a.l=null;a.i.clear();a.j.clear()};function H(a,d,b){if(!a.length)return a;if(1===a.length)return a=a[0],a=b||a.length>d?d?a.slice(b,b+d):a.slice(b):a;let f=[];for(let c=0,g,e;c<a.length;c++)if((g=a[c])&&(e=g.length)){if(b){if(b>=e){b-=e;continue}b<e&&(g=d?g.slice(b,b+d):g.slice(b),e=g.length,b=0)}e>d&&(g=g.slice(0,d),e=d);if(!f.length&&e>=d)return g;f.push(g);d-=e;if(!d)break}return f=1<f.length?[].concat.apply([],f):f[0]};w();const I={memory:{resolution:1},performance:{resolution:3,fastupdate:!0,context:{depth:1,resolution:1}},match:{tokenize:"forward"},score:{resolution:9,context:{depth:2,resolution:3}}};J.prototype.add=function(a,d,b,f){if(d&&(a||0===a)){if(!f&&!b&&this.reg.has(a))return this.update(a,d);d=this.encoder.encode(d);if(f=d.length){const n=w(),m=w(),v=this.depth,C=this.resolution;for(let p=0;p<f;p++){let l=d[this.rtl?f-1-p:p];var c=l.length;if(c&&(v||!m[l])){var g=this.score?this.score(d,l,p,null,0):K(C,f,p),e="";switch(this.tokenize){case "full":if(2<c){for(let q=0,t;q<c;q++)for(g=c;g>q;g--){e=l.substring(q,g);t=this.rtl?c-1-q:q;var h=this.score?this.score(d,l,p,e,t):K(C,f,p,c,t);L(this,
+m,e,h,a,b)}break}case "bidirectional":case "reverse":if(1<c){for(h=c-1;0<h;h--){e=l[this.rtl?c-1-h:h]+e;var k=this.score?this.score(d,l,p,e,h):K(C,f,p,c,h);L(this,m,e,k,a,b)}e=""}case "forward":if(1<c){for(h=0;h<c;h++)e+=l[this.rtl?c-1-h:h],L(this,m,e,g,a,b);break}default:if(L(this,m,l,g,a,b),v&&1<f&&p<f-1)for(c=w(),e=this.v,g=l,h=Math.min(v+1,this.rtl?p+1:f-p),c[g]=1,k=1;k<h;k++)if((l=d[this.rtl?f-1-p-k:p+k])&&!c[l]){c[l]=1;const q=this.score?this.score(d,g,p,l,k-1):K(e+(f/2>e?0:1),f,p,h-1,k-1),
+t=this.bidirectional&&l>g;L(this,n,t?g:l,q,a,b,t?l:g)}}}}this.fastupdate||this.reg.add(a)}}return this};function L(a,d,b,f,c,g,e){let h=e?a.ctx:a.map,k;if(!d[b]||e&&!(k=d[b])[e])e?(d=k||(d[b]=w()),d[e]=1,(k=h.get(e))?h=k:h.set(e,h=new Map)):d[b]=1,(k=h.get(b))?h=k:h.set(b,h=[]),h=h[f]||(h[f]=[]),g&&h.includes(c)||(h.push(c),a.fastupdate&&((d=a.reg.get(c))?d.push(h):a.reg.set(c,[h])))}function K(a,d,b,f,c){return b&&1<a?d+(f||0)<=a?b+(c||0):(a-1)/(d+(f||0))*(b+(c||0))+1|0:0};J.prototype.search=function(a,d,b){b||(d||"object"!==typeof a?"object"===typeof d&&(b=d,d=0):(b=a,a=""));var f=[],c=0;if(b){a=b.query||a;d=b.limit||d;c=b.offset||0;var g=b.context;var e=b.suggest;var h=!0;var k=b.resolution}else h=!0;a=this.encoder.encode(a);b=a.length;d=d||(h?100:0);if(1===b)return e=c,(c=M(this,a[0],""))&&c.length?H.call(this,c,d,e):[];g=this.depth&&!1!==g;if(2===b&&g&&!e)return e=c,(c=M(this,a[1],a[0]))&&c.length?H.call(this,c,d,e):[];h=w();var n=0;if(1<b&&g){var m=a[0];n=1}k||
+0===k||(k=m?this.v:this.resolution);for(let l,q;n<b;n++){if((q=a[n])&&!h[q]){h[q]=1;l=M(this,q,m);a:{g=l;var v=f,C=e,p=k;let t=[];if(g&&g.length){if(g.length<=p){v.push(g);l=void 0;break a}for(let x=0,A;x<p;x++)if(A=g[x])t[x]=A;if(t.length){v.push(t);l=void 0;break a}}l=C?void 0:t}if(l){f=l;break}m&&(e&&l&&f.length||(m=q))}e&&m&&n===b-1&&!f.length&&(k=this.resolution,m="",n=-1,h=w())}a:{a=f;f=a.length;m=a;if(1<f)b:{f=e;m=a.length;e=[];b=w();for(let l=0,q,t,x,A;l<k;l++)for(n=0;n<m;n++)if(x=a[n],l<
 x.length&&(q=x[l]))for(g=0;g<q.length;g++)if(t=q[g],(h=b[t])?b[t]++:(h=0,b[t]=1),A=e[h]||(e[h]=[]),A.push(t),d&&h===m-1&&A.length-c===d){m=A;break b}if(a=e.length)if(f){if(1<e.length)c:for(a=[],k=w(),f=e.length,h=f-1;0<=h;h--){if(b=(f=e[h])&&f.length)for(n=0;n<b;n++)if(m=f[n],!k[m])if(k[m]=1,c)c--;else if(a.push(m),a.length===d)break c}else a=(e=e[0]).length>d||c?e.slice(c,d+c):e;e=a}else{if(a<m){m=[];break b}e=e[a-1];if(d||c)if(e.length>d||c)e=e.slice(c,d+c)}m=e}else if(1===f){d=H.call(null,a[0],
-d,c);break a}d=m}return d};function N(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};K.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else O(this.map,a),this.depth&&O(this.ctx,a);d||this.reg.delete(a)}return this};
-function O(a,d){let b=0;if(a.constructor===Array)for(let f=0,c,g;f<a.length;f++){if((c=a[f])&&c.length)if(g=c.indexOf(d),0<=g){1<c.length?(c.splice(g,1),b++):delete a[f];break}else b++}else for(let f of a.entries()){const c=f[0],g=O(f[1],d);g?b+=g:a.delete(c)}return b};function K(a,d){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 f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||I;this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
-a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=K.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
-function P(a){let d=0;if(a.constructor===Array)for(let b=0,f;b<a.length;b++)(f=a[b])&&(d+=f.length);else for(const b of a.entries()){const f=b[0],c=P(b[1]);c?d+=c:a.delete(f)}return d}r.cleanup=function(){if(!this.fastupdate)return this;P(this.map);this.depth&&P(this.ctx);return this};w();export default {Index:K,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
-export const Index=K;export const Charset=null;export const Encoder=F;export const Document=null;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
+d,c);break a}d=m}return d};function M(a,d,b){let f;b&&(f=a.bidirectional&&d>b)&&(f=b,b=d,d=f);a=b?(a=a.ctx.get(b))&&a.get(d):a.map.get(d);return a};J.prototype.remove=function(a,d){const b=this.reg.size&&(this.fastupdate?this.reg.get(a):this.reg.has(a));if(b){if(this.fastupdate)for(let f=0,c;f<b.length;f++){if(c=b[f])if(2>c.length)c.pop();else{const g=c.indexOf(a);g===b.length-1?c.pop():c.splice(g,1)}}else N(this.map,a),this.depth&&N(this.ctx,a);d||this.reg.delete(a)}return this};
+function N(a,d){let b=0;if(a.constructor===Array)for(let f=0,c,g;f<a.length;f++){if((c=a[f])&&c.length)if(g=c.indexOf(d),0<=g){1<c.length?(c.splice(g,1),b++):delete a[f];break}else b++}else for(let f of a.entries()){const c=f[0],g=N(f[1],d);g?b+=g:a.delete(c)}return b};function J(a,d){if(!this||this.constructor!==J)return new J(a);if(a){var b="string"===typeof a?a:a.preset;b&&(a=Object.assign({},I[b],a))}else a={};b=a.context;const f=!0===b?{depth:1}:b||{},c=a.encode||a.encoder||{};this.encoder=c.encode?c:"object"===typeof c?new F(c):{encode:c};this.resolution=a.resolution||9;this.tokenize=b=(b=a.tokenize)&&"default"!==b&&"exact"!==b&&b||"strict";this.depth="strict"===b&&f.depth||0;this.bidirectional=!1!==f.bidirectional;this.fastupdate=!!a.fastupdate;this.score=
+a.score||null;this.map=new Map;this.ctx=new Map;this.reg=d||(this.fastupdate?new Map:new Set);this.v=f.resolution||3;this.rtl=c.rtl||a.rtl||!1}r=J.prototype;r.clear=function(){this.map.clear();this.ctx.clear();this.reg.clear();return this};r.append=function(a,d){return this.add(a,d,!0)};r.contain=function(a){return this.reg.has(a)};r.update=function(a,d){const b=this,f=this.remove(a);return f&&f.then?f.then(()=>b.add(a,d)):this.add(a,d)};
+function O(a){let d=0;if(a.constructor===Array)for(let b=0,f;b<a.length;b++)(f=a[b])&&(d+=f.length);else for(const b of a.entries()){const f=b[0],c=O(b[1]);c?d+=c:a.delete(f)}return d}r.cleanup=function(){if(!this.fastupdate)return this;O(this.map);this.depth&&O(this.ctx);return this};w();export default {Index:J,Charset:null,Encoder:F,Document:null,Worker:null,Resolver:null,IndexedDB:null,Language:{}};
+export const Index=J;export const Charset=null;export const Encoder=F;export const Document=null;export const Worker=null;export const Resolver=null;export const IndexedDB=null;export const Language={};
\ No newline at end of file
diff --git a/dist/module-debug/bundle.js b/dist/module-debug/bundle.js
index 9364100..95e5e38 100644
--- a/dist/module-debug/bundle.js
+++ b/dist/module-debug/bundle.js
@@ -6,7 +6,7 @@ import Index from "./index.js";
 import WorkerIndex from "./worker.js";
 import Resolver from "./resolver.js";
 import Encoder from "./encoder.js";
-import IdxDB from "./db/indexeddb/db.js";
+import IdxDB from "./db/indexeddb/index.js";
 import Charset from "./charset.js";
 import { KeystoreMap, KeystoreArray, KeystoreSet } from "./keystore.js";
 
diff --git a/dist/module-debug/charset.js b/dist/module-debug/charset.js
index 1b9b560..3f4c1ec 100644
--- a/dist/module-debug/charset.js
+++ b/dist/module-debug/charset.js
@@ -1,15 +1,14 @@
 import charset_latin_exact from "./charset/latin/exact.js";
-import charset_latin_default from "./charset/latin/default.js";
-import charset_latin_simple from "./charset/latin/simple.js";
+import charset_latin_normalize from "./charset/latin/normalize.js";
 import charset_latin_balance from "./charset/latin/balance.js";
 import charset_latin_advanced from "./charset/latin/advanced.js";
 import charset_latin_extra from "./charset/latin/extra.js";
 import charset_latin_soundex from "./charset/latin/soundex.js";
 
-// all charset
+// universal charset
 export const Exact = charset_latin_exact;
-export const Default = charset_latin_default;
-export const Normalize = charset_latin_simple;
+export const Default = charset_latin_normalize;
+export const Normalize = charset_latin_normalize;
 // latin charset
 export const LatinBalance = charset_latin_balance;
 export const LatinAdvanced = charset_latin_advanced;
@@ -17,14 +16,14 @@ export const LatinExtra = charset_latin_extra;
 export const LatinSoundex = charset_latin_soundex;
 // deprecated
 export const LatinExact = charset_latin_exact;
-export const LatinDefault = charset_latin_default;
-export const LatinSimple = charset_latin_simple;
+export const LatinDefault = charset_latin_normalize;
+export const LatinSimple = charset_latin_normalize;
 
 export default {
-    // all charset
+    // universal charset
     Exact: charset_latin_exact,
-    Default: charset_latin_default,
-    Normalize: charset_latin_simple,
+    Default: charset_latin_normalize,
+    Normalize: charset_latin_normalize,
     // latin charset
     LatinBalance: charset_latin_balance,
     LatinAdvanced: charset_latin_advanced,
@@ -32,6 +31,6 @@ export default {
     LatinSoundex: charset_latin_soundex,
     // deprecated
     LatinExact: charset_latin_exact,
-    LatinDefault: charset_latin_default,
-    LatinSimple: charset_latin_simple
+    LatinDefault: charset_latin_normalize,
+    LatinSimple: charset_latin_normalize
 };
\ No newline at end of file
diff --git a/dist/module-debug/charset/latin/advanced.js b/dist/module-debug/charset/latin/advanced.js
index a6d187d..5d4003c 100644
--- a/dist/module-debug/charset/latin/advanced.js
+++ b/dist/module-debug/charset/latin/advanced.js
@@ -17,7 +17,7 @@ export const replacer = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2",
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !0,
     mapper: soundex,
     matcher: matcher,
diff --git a/dist/module-debug/charset/latin/balance.js b/dist/module-debug/charset/latin/balance.js
index dae9967..bae3dea 100644
--- a/dist/module-debug/charset/latin/balance.js
+++ b/dist/module-debug/charset/latin/balance.js
@@ -30,7 +30,7 @@ export const soundex = new Map([["b", "p"],
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !0,
     mapper: soundex
 };
diff --git a/dist/module-debug/charset/latin/exact.js b/dist/module-debug/charset/latin/exact.js
index 9fa871f..e51f713 100644
--- a/dist/module-debug/charset/latin/exact.js
+++ b/dist/module-debug/charset/latin/exact.js
@@ -3,8 +3,8 @@ import { EncoderOptions } from "../../type.js";
 /** @type EncoderOptions */
 const options = {
     normalize: !1,
-    numeric: !1,
-    split: /\s+/
+    numeric: !1
+    //split: /\s+/
     //normalize: false,
     //dedupe: false
 };
diff --git a/dist/module-debug/charset/latin/extra.js b/dist/module-debug/charset/latin/extra.js
index 02f7ae2..10a41b9 100644
--- a/dist/module-debug/charset/latin/extra.js
+++ b/dist/module-debug/charset/latin/extra.js
@@ -7,7 +7,7 @@ export const compact = [/(?!^)[aeo]/g, "" // before soundex: aeoy, old: aioy
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !0,
     mapper: soundex,
     replacer: replacer.concat(compact),
diff --git a/dist/module-debug/charset/latin/default.js b/dist/module-debug/charset/latin/normalize.js
similarity index 90%
rename from dist/module-debug/charset/latin/default.js
rename to dist/module-debug/charset/latin/normalize.js
index 4ba0cad..e9557b2 100644
--- a/dist/module-debug/charset/latin/default.js
+++ b/dist/module-debug/charset/latin/normalize.js
@@ -2,7 +2,7 @@ import { EncoderOptions } from "../../type.js";
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0
+    //normalize: true
     // normalize: function(str){
     //     return str.toLowerCase();
     // },
diff --git a/dist/module-debug/charset/latin/simple.js b/dist/module-debug/charset/latin/simple.js
deleted file mode 100644
index be96c47..0000000
--- a/dist/module-debug/charset/latin/simple.js
+++ /dev/null
@@ -1,8 +0,0 @@
-import { EncoderOptions } from "../../type.js";
-
-/** @type EncoderOptions */
-const options = {
-    normalize: !0,
-    dedupe: !0
-};
-export default options;
\ No newline at end of file
diff --git a/dist/module-debug/charset/latin/soundex.js b/dist/module-debug/charset/latin/soundex.js
index c1ef7a2..c15547f 100644
--- a/dist/module-debug/charset/latin/soundex.js
+++ b/dist/module-debug/charset/latin/soundex.js
@@ -2,7 +2,7 @@ import { EncoderOptions } from "../../type.js";
 
 /** @type {EncoderOptions} */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !1,
     include: {
         letter: !0
diff --git a/dist/module-debug/charset/normalize.js b/dist/module-debug/charset/polyfill.js
similarity index 100%
rename from dist/module-debug/charset/normalize.js
rename to dist/module-debug/charset/polyfill.js
diff --git a/dist/module-debug/db/clickhouse/db.js b/dist/module-debug/db/clickhouse/index.js
similarity index 99%
rename from dist/module-debug/db/clickhouse/db.js
rename to dist/module-debug/db/clickhouse/index.js
index a160e17..f0fd081 100644
--- a/dist/module-debug/db/clickhouse/db.js
+++ b/dist/module-debug/db/clickhouse/index.js
@@ -47,7 +47,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_]/g, "");
 }
 
-let DB;
+let Index;
 
 /**
  * @constructor
@@ -74,7 +74,7 @@ export default function ClickhouseDB(name, config = {}) {
     if (!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
     //this.trx = false;
     this.support_tag_search = !0;
-    this.db = DB || (DB = config.db || null);
+    this.db = Index || (Index = config.db || null);
     Object.assign(defaults, config);
     config.database && (defaults.config.database = config.database);
     this.db && delete defaults.db;
@@ -93,7 +93,7 @@ ClickhouseDB.prototype.mount = function (flexsearch) {
 ClickhouseDB.prototype.open = async function () {
 
     if (!this.db) {
-        this.db = DB || (DB = new ClickHouse(defaults));
+        this.db = Index || (Index = new ClickHouse(defaults));
     }
 
     const exists = await this.db.query(`
@@ -174,7 +174,7 @@ ClickhouseDB.prototype.open = async function () {
 
 ClickhouseDB.prototype.close = function () {
     //DB && DB.close();
-    this.db = DB = null;
+    this.db = Index = null;
     return this;
 };
 
diff --git a/dist/module-debug/db/indexeddb/db.js b/dist/module-debug/db/indexeddb/index.js
similarity index 98%
rename from dist/module-debug/db/indexeddb/db.js
rename to dist/module-debug/db/indexeddb/index.js
index f57047c..1f4f651 100644
--- a/dist/module-debug/db/indexeddb/db.js
+++ b/dist/module-debug/db/indexeddb/index.js
@@ -18,7 +18,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_\-]/g, "");
 }
 
-const DB = create_object();
+const Index = create_object();
 
 /**
  * @param {string|PersistentOptions=} name
@@ -65,8 +65,8 @@ IdxDB.prototype.open = function () {
 
     // return this.db = new Promise(function(resolve, reject){
 
-    DB[self.id] || (DB[self.id] = []);
-    DB[self.id].push(self.field);
+    Index[self.id] || (Index[self.id] = []);
+    Index[self.id].push(self.field);
 
     const req = IndexedDB.open(self.id, VERSION);
 
@@ -82,8 +82,8 @@ IdxDB.prototype.open = function () {
         // IndexedDB is such a poor contribution :(
         for (let i = 0, ref; i < fields.length; i++) {
             ref = fields[i];
-            for (let j = 0, field; j < DB[self.id].length; j++) {
-                field = DB[self.id][j];
+            for (let j = 0, field; j < Index[self.id].length; j++) {
+                field = Index[self.id][j];
                 db.objectStoreNames.contains(ref + ("reg" !== ref ? field ? ":" + field : "" : "")) || db.createObjectStore(ref + ("reg" !== ref ? field ? ":" + field : "" : "")); //{ autoIncrement: true /*keyPath: "id"*/ }
                 //.createIndex("idx", "ids", { multiEntry: true, unique: false });
             }
@@ -167,8 +167,8 @@ IdxDB.prototype.clear = function () {
 
     for (let i = 0, ref; i < fields.length; i++) {
         ref = fields[i];
-        for (let j = 0, field; j < DB[this.id].length; j++) {
-            field = DB[this.id][j];
+        for (let j = 0, field; j < Index[this.id].length; j++) {
+            field = Index[this.id][j];
             stores.push(ref + ("reg" !== ref ? field ? ":" + field : "" : ""));
         }
     }
diff --git a/dist/module-debug/db/mongodb/db.js b/dist/module-debug/db/mongodb/index.js
similarity index 98%
rename from dist/module-debug/db/mongodb/db.js
rename to dist/module-debug/db/mongodb/index.js
index 1ab13f0..f4ac562 100644
--- a/dist/module-debug/db/mongodb/db.js
+++ b/dist/module-debug/db/mongodb/index.js
@@ -16,7 +16,7 @@ function sanitize(str) {
 }
 
 let CLIENT,
-    DB = Object.create(null);
+    Index = Object.create(null);
 
 
 /**
@@ -38,7 +38,7 @@ export default function MongoDB(name, config = {}) {
     this.id = "flexsearch" + (name ? "-" + sanitize(name) : "");
     this.field = config.field ? "-" + sanitize(config.field) : "";
     this.type = config.type || "";
-    this.db = config.db || DB[this.id] || CLIENT || null;
+    this.db = config.db || Index[this.id] || CLIENT || null;
     this.trx = !1;
     this.support_tag_search = /* tag? */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/;
     Object.assign(defaults, config);
@@ -87,7 +87,7 @@ async function createCollection(db, ref, field) {
 MongoDB.prototype.open = async function () {
 
     if (!this.db) {
-        if (!(this.db = DB[this.id])) {
+        if (!(this.db = Index[this.id])) {
             if (!(this.db = CLIENT)) {
 
                 let url = defaults.url;
@@ -101,7 +101,7 @@ MongoDB.prototype.open = async function () {
     }
 
     if (this.db.db) {
-        this.db = DB[this.id] = this.db.db(this.id);
+        this.db = Index[this.id] = this.db.db(this.id);
     }
 
     const collections = await this.db.listCollections().toArray();
@@ -126,7 +126,7 @@ MongoDB.prototype.open = async function () {
 MongoDB.prototype.close = function () {
     //CLIENT && CLIENT.close();
     this.db = CLIENT = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     return this;
 };
 
diff --git a/dist/module/db/postgres/db.js b/dist/module-debug/db/postgres/index.js
similarity index 99%
rename from dist/module/db/postgres/db.js
rename to dist/module-debug/db/postgres/index.js
index 8c96b4b..f4713df 100644
--- a/dist/module/db/postgres/db.js
+++ b/dist/module-debug/db/postgres/index.js
@@ -61,9 +61,7 @@ export default function PostgresDB(name, config = {}) {
     this.id = (config.schema ? sanitize(config.schema) : defaults.schema) + (name ? "_" + sanitize(name) : "");
     this.field = config.field ? "_" + sanitize(config.field) : "";
     this.type = config.type ? types[config.type.toLowerCase()] : "text";
-    this.support_tag_search =
-    /* tag? */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/
-    /*await rows.hasNext()*/;
+    this.support_tag_search = /* tag? */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/;
     if (!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
     this.db = DB || (DB = config.db || null);
     Object.assign(defaults, config);
@@ -408,7 +406,8 @@ PostgresDB.prototype.search = function (flexsearch, query, limit = 100, offset =
 
         for (let i = 0; i < query_length; i++) {
             where += (where ? "," : "") + "$" + count++;
-        }where = "key " + (1 < query_length ? "IN (" + where + ")" : "= " + where);
+        }
+        where = "key " + (1 < query_length ? "IN (" + where + ")" : "= " + where);
 
         if (tags) {
             where = "(" + where + ")";
@@ -608,7 +607,7 @@ PostgresDB.prototype.commit = async function (flexsearch, _replace, _append) {
             // while(data.length){
             //     let next;
             //     if(data.length > MAXIMUM_QUERY_VARS){
-
+            //         next = data.slice(MAXIMUM_QUERY_VARS);
             //         data = data.slice(0, MAXIMUM_QUERY_VARS);
             //     }
             //     let insert = pgp.helpers.insert(data, stmt);
diff --git a/dist/module-debug/db/redis/db.js b/dist/module-debug/db/redis/index.js
similarity index 100%
rename from dist/module-debug/db/redis/db.js
rename to dist/module-debug/db/redis/index.js
diff --git a/dist/module-debug/db/sqlite/db.js b/dist/module-debug/db/sqlite/index.js
similarity index 99%
rename from dist/module-debug/db/sqlite/db.js
rename to dist/module-debug/db/sqlite/index.js
index 35df78b..82728eb 100644
--- a/dist/module-debug/db/sqlite/db.js
+++ b/dist/module-debug/db/sqlite/index.js
@@ -36,7 +36,7 @@ function sanitize(str) {
 
 // global transaction to keep track of database lock
 const TRX = Object.create(null),
-      DB = Object.create(null);
+      Index = Object.create(null);
 
 
 /**
@@ -59,7 +59,7 @@ export default function SqliteDB(name, config = {}) {
     this.id = config.path || (":memory:" === name ? name : "flexsearch" + (name ? "-" + sanitize(name) : "") + ".sqlite");
     this.field = config.field ? "_" + sanitize(config.field) : "";
     this.support_tag_search = /* tag? */ /* stringify */ /* stringify */ /* single param */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/;
-    this.db = config.db || DB[this.id] || null;
+    this.db = config.db || Index[this.id] || null;
     this.type = config.type ? types[config.type.toLowerCase()] : "string";
     if (!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
 }
@@ -77,7 +77,7 @@ SqliteDB.prototype.open = async function () {
 
     if (!this.db) {
 
-        if (!(this.db = DB[this.id])) {
+        if (!(this.db = Index[this.id])) {
 
             let filepath = this.id;
             if (":memory:" !== filepath) {
@@ -89,7 +89,7 @@ SqliteDB.prototype.open = async function () {
                 }
             }
 
-            this.db = DB[this.id] = new sqlite3.Database(filepath);
+            this.db = Index[this.id] = new sqlite3.Database(filepath);
         }
     }
 
@@ -197,7 +197,7 @@ SqliteDB.prototype.open = async function () {
 SqliteDB.prototype.close = function () {
     this.db && this.db.close();
     this.db = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     TRX[this.id] = null;
     return this;
 };
diff --git a/dist/module-debug/document.js b/dist/module-debug/document.js
index b7b4404..423d173 100644
--- a/dist/module-debug/document.js
+++ b/dist/module-debug/document.js
@@ -458,20 +458,25 @@ Document.prototype.get = function (id) {
 
     if (this.db) {
         return this.index.get(this.field[0]).db.enrich(id).then(function (result) {
-            return result[0] && result[0].doc;
+            return result[0] && result[0].doc || null;
         });
     }
 
-    return this.store.get(id);
+    return this.store.get(id) || null;
 };
 
 /**
- * @param {number|string} id
+ * @param {number|string|Object} id
  * @param {Object} data
  * @return {Document}
  */
 Document.prototype.set = function (id, data) {
 
+    if ("object" == typeof id) {
+        data = id;
+        id = parse_simple(data, this.key);
+    }
+
     this.store.set(id, data);
     return this;
 };
diff --git a/dist/module-debug/encoder.js b/dist/module-debug/encoder.js
index 017399a..b08389b 100644
--- a/dist/module-debug/encoder.js
+++ b/dist/module-debug/encoder.js
@@ -1,6 +1,6 @@
 
 import { merge_option } from "./common.js";
-import normalize_polyfill from "./charset/normalize.js";
+import normalize_polyfill from "./charset/polyfill.js";
 import { EncoderOptions } from "./type.js";
 
 /*
@@ -510,6 +510,11 @@ Encoder.prototype.encode = function (str) {
     return final;
 };
 
+export function fallback_encoder(str) {
+
+    return str.normalize("NFKD").replace(normalize, "").toLowerCase().trim().split(/\s+/);
+}
+
 // Encoder.prototype.compress = function(str) {
 //
 //     //return str;
diff --git a/dist/module-debug/index.js b/dist/module-debug/index.js
index 63fa421..e5e3f02 100644
--- a/dist/module-debug/index.js
+++ b/dist/module-debug/index.js
@@ -7,13 +7,13 @@
  */
 
 import { IndexOptions, ContextOptions, EncoderOptions } from "./type.js";
-import Encoder from "./encoder.js";
+import Encoder, { fallback_encoder } from "./encoder.js";
 import Cache, { searchCache } from "./cache.js";
 import Charset from "./charset.js";
 import { KeystoreMap, KeystoreSet } from "./keystore.js";
 import { is_array, is_string } from "./common.js";
 import { exportIndex, importIndex, serialize } from "./serialize.js";
-import default_encoder from "./charset/latin/default.js";
+//import default_encoder from "./charset/latin/default.js";
 import apply_preset from "./preset.js";
 import apply_async from "./async.js";
 import tick from "./profiler.js";
@@ -39,7 +39,7 @@ export default function Index(options, _register) {
     let tmp = options.context;
     /** @type ContextOptions */
     const context = /** @type ContextOptions */ /* tag? */ /* stringify */ /* stringify */ /* single param */ /* skip update: */ /* append: */ /* skip update: */ /* skip_update: */ /* skip deletion */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/ === tmp ? { depth: 1 } : tmp || {},
-          encoder = is_string(options.encoder) ? Charset[options.encoder] : options.encode || options.encoder || default_encoder;
+          encoder = is_string(options.encoder) ? Charset[options.encoder] : options.encode || options.encoder || {} /*default_encoder*/;
 
     /** @type Encoder */
     this.encoder = encoder.encode ? encoder : "object" == typeof encoder ? new Encoder( /** @type {EncoderOptions} */encoder) : { encode: encoder };
diff --git a/dist/module-debug/index/search.js b/dist/module-debug/index/search.js
index 75d25a3..e6ba8b8 100644
--- a/dist/module-debug/index/search.js
+++ b/dist/module-debug/index/search.js
@@ -57,8 +57,7 @@ Index.prototype.search = function (query, limit, options) {
         offset = options.offset || 0;
         context = options.context;
         suggest = options.suggest;
-        resolve = /*global_resolve &&*/ /* suggest */
-        /* append: */ /* enrich */!1 !== options.resolve;
+        resolve = /*global_resolve &&*/ /* suggest */ /* append: */ /* enrich */!1 !== options.resolve;
         //resolve || (global_resolve = 0);
         enrich = resolve && options.enrich;
         boost = options.boost;
@@ -91,8 +90,8 @@ Index.prototype.search = function (query, limit, options) {
 
     // fast path single context
     if (2 === length && context && !suggest) {
-        return single_term_query.call(this, query_terms[0], // term
-        query_terms[1], // ctx
+        return single_term_query.call(this, query_terms[1], // term
+        query_terms[0], // ctx
         limit, offset, resolve, enrich, tag);
     }
 
diff --git a/dist/module-min/bundle.js b/dist/module-min/bundle.js
index 281f055..26f07c1 100644
--- a/dist/module-min/bundle.js
+++ b/dist/module-min/bundle.js
@@ -1 +1 @@
-import{SearchOptions,ContextOptions,DocumentDescriptor,DocumentSearchOptions,FieldOptions,IndexOptions,DocumentOptions,TagOptions,StoreOptions,EncoderOptions,EncoderSplitOptions,PersistentOptions,ResolverOptions}from"./type.js";import StorageInterface from"./db/interface.js";import Document from"./document.js";import Index from"./index.js";import WorkerIndex from"./worker.js";import Resolver from"./resolver.js";import Encoder from"./encoder.js";import IdxDB from"./db/indexeddb/db.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreArray,KeystoreSet}from"./keystore.js";Index.prototype.add,Index.prototype.append,Index.prototype.search,Index.prototype.update,Index.prototype.remove,Index.prototype.contain,Index.prototype.clear,Index.prototype.cleanup,Index.prototype.searchCache,Index.prototype.addAsync,Index.prototype.appendAsync,Index.prototype.searchAsync,Index.prototype.updateAsync,Index.prototype.removeAsync,Index.prototype.export,Index.prototype.import,Index.prototype.serialize,Index.prototype.mount,Index.prototype.commit,Index.prototype.destroy,Index.prototype.encoder,Index.prototype.reg,Index.prototype.map,Index.prototype.ctx,Index.prototype.db,Index.prototype.tag,Index.prototype.store,Index.prototype.depth,Index.prototype.bidirectional,Index.prototype.commit_task,Index.prototype.commit_timer,Index.prototype.cache,Index.prototype.bypass,Index.prototype.document,Encoder.prototype.assign,Encoder.prototype.encode,Encoder.prototype.addMatcher,Encoder.prototype.addStemmer,Encoder.prototype.addFilter,Encoder.prototype.addMapper,Encoder.prototype.addReplacer,Document.prototype.add,Document.prototype.append,Document.prototype.search,Document.prototype.update,Document.prototype.remove,Document.prototype.contain,Document.prototype.clear,Document.prototype.cleanup,Document.prototype.addAsync,Document.prototype.appendAsync,Document.prototype.searchAsync,Document.prototype.updateAsync,Document.prototype.removeAsync,Document.prototype.mount,Document.prototype.commit,Document.prototype.destroy,Document.prototype.export,Document.prototype.import,Document.prototype.searchCache,Document.prototype.get,Document.prototype.set,Document.prototype.field,Document.prototype.index,Document.prototype.reg,Document.prototype.tag,Document.prototype.store,Document.prototype.fastupdate,Resolver.prototype.limit,Resolver.prototype.offset,Resolver.prototype.boost,Resolver.prototype.resolve,Resolver.prototype.or,Resolver.prototype.and,Resolver.prototype.xor,Resolver.prototype.not,Resolver.prototype.result,StorageInterface.db,StorageInterface.id,StorageInterface.support_tag_search,StorageInterface.fastupdate,StorageInterface.prototype.mount,StorageInterface.prototype.open,StorageInterface.prototype.close,StorageInterface.prototype.destroy,StorageInterface.prototype.clear,StorageInterface.prototype.get,StorageInterface.prototype.tag,StorageInterface.prototype.enrich,StorageInterface.prototype.has,StorageInterface.prototype.search,StorageInterface.prototype.info,StorageInterface.prototype.commit,StorageInterface.prototype.remove,KeystoreArray.length,KeystoreMap.size,KeystoreSet.size,Charset.LatinExact,Charset.LatinDefault,Charset.LatinSimple,Charset.LatinBalance,Charset.LatinAdvanced,Charset.LatinExtra,Charset.LatinSoundex,Charset.ArabicDefault,Charset.CjkDefault,Charset.CyrillicDefault,IndexOptions.preset,IndexOptions.context,IndexOptions.encoder,IndexOptions.encode,IndexOptions.resolution,IndexOptions.tokenize,IndexOptions.fastupdate,IndexOptions.score,IndexOptions.keystore,IndexOptions.rtl,IndexOptions.cache,IndexOptions.resolve,IndexOptions.db,IndexOptions.worker,IndexOptions.config,IndexOptions.priority,IndexOptions.export,IndexOptions.import,FieldOptions.preset,FieldOptions.context,FieldOptions.encoder,FieldOptions.encode,FieldOptions.resolution,FieldOptions.tokenize,FieldOptions.fastupdate,FieldOptions.score,FieldOptions.keystore,FieldOptions.rtl,FieldOptions.cache,FieldOptions.db,FieldOptions.config,FieldOptions.resolve,FieldOptions.field,FieldOptions.filter,FieldOptions.custom,FieldOptions.worker,DocumentOptions.context,DocumentOptions.encoder,DocumentOptions.encode,DocumentOptions.resolution,DocumentOptions.tokenize,DocumentOptions.fastupdate,DocumentOptions.score,DocumentOptions.keystore,DocumentOptions.rtl,DocumentOptions.cache,DocumentOptions.db,DocumentOptions.doc,DocumentOptions.document,DocumentOptions.worker,DocumentOptions.priority,DocumentOptions.export,DocumentOptions.import,ContextOptions.depth,ContextOptions.bidirectional,ContextOptions.resolution,DocumentDescriptor.field,DocumentDescriptor.index,DocumentDescriptor.tag,DocumentDescriptor.store,DocumentDescriptor.id,TagOptions.field,TagOptions.tag,TagOptions.filter,TagOptions.custom,TagOptions.keystore,TagOptions.db,TagOptions.config,StoreOptions.field,StoreOptions.filter,StoreOptions.custom,StoreOptions.config,SearchOptions.query,SearchOptions.limit,SearchOptions.offset,SearchOptions.context,SearchOptions.suggest,SearchOptions.resolve,SearchOptions.enrich,SearchOptions.resolution,DocumentSearchOptions.query,DocumentSearchOptions.limit,DocumentSearchOptions.offset,DocumentSearchOptions.context,DocumentSearchOptions.suggest,DocumentSearchOptions.enrich,DocumentSearchOptions.tag,DocumentSearchOptions.field,DocumentSearchOptions.index,DocumentSearchOptions.pluck,DocumentSearchOptions.merge,DocumentSearchOptions.highlight,EncoderOptions.rtl,EncoderOptions.dedupe,EncoderOptions.split,EncoderOptions.include,EncoderOptions.exclude,EncoderOptions.prepare,EncoderOptions.finalize,EncoderOptions.filter,EncoderOptions.matcher,EncoderOptions.mapper,EncoderOptions.stemmer,EncoderOptions.replacer,EncoderOptions.minlength,EncoderOptions.maxlength,EncoderOptions.cache,EncoderSplitOptions.letter,EncoderSplitOptions.number,EncoderSplitOptions.symbol,EncoderSplitOptions.punctuation,EncoderSplitOptions.control,EncoderSplitOptions.char,PersistentOptions.name,PersistentOptions.field,PersistentOptions.type,PersistentOptions.db,ResolverOptions.index,ResolverOptions.query,ResolverOptions.limit,ResolverOptions.offset,ResolverOptions.enrich,ResolverOptions.resolve,ResolverOptions.suggest,ResolverOptions.and,ResolverOptions.or,ResolverOptions.xor,ResolverOptions.not;const FlexSearch={Index:Index,Charset:Charset,Encoder:Encoder,Document:Document,Worker:WorkerIndex,Resolver:Resolver,IndexedDB:IdxDB,Language:{}};{const a="undefined"==typeof self?"undefined"==typeof global?self:global:self;let b;(b=a.define)&&b.amd?b([],function(){return FlexSearch}):"object"==typeof a.exports?a.exports=FlexSearch:a.FlexSearch=FlexSearch}export default FlexSearch;export{Index,Document,Encoder,Charset,WorkerIndex as Worker,Resolver,IdxDB as IndexedDB};
\ No newline at end of file
+import{SearchOptions,ContextOptions,DocumentDescriptor,DocumentSearchOptions,FieldOptions,IndexOptions,DocumentOptions,TagOptions,StoreOptions,EncoderOptions,EncoderSplitOptions,PersistentOptions,ResolverOptions}from"./type.js";import StorageInterface from"./db/interface.js";import Document from"./document.js";import Index from"./index.js";import WorkerIndex from"./worker.js";import Resolver from"./resolver.js";import Encoder from"./encoder.js";import IdxDB from"./db/indexeddb/index.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreArray,KeystoreSet}from"./keystore.js";Index.prototype.add,Index.prototype.append,Index.prototype.search,Index.prototype.update,Index.prototype.remove,Index.prototype.contain,Index.prototype.clear,Index.prototype.cleanup,Index.prototype.searchCache,Index.prototype.addAsync,Index.prototype.appendAsync,Index.prototype.searchAsync,Index.prototype.updateAsync,Index.prototype.removeAsync,Index.prototype.export,Index.prototype.import,Index.prototype.serialize,Index.prototype.mount,Index.prototype.commit,Index.prototype.destroy,Index.prototype.encoder,Index.prototype.reg,Index.prototype.map,Index.prototype.ctx,Index.prototype.db,Index.prototype.tag,Index.prototype.store,Index.prototype.depth,Index.prototype.bidirectional,Index.prototype.commit_task,Index.prototype.commit_timer,Index.prototype.cache,Index.prototype.bypass,Index.prototype.document,Encoder.prototype.assign,Encoder.prototype.encode,Encoder.prototype.addMatcher,Encoder.prototype.addStemmer,Encoder.prototype.addFilter,Encoder.prototype.addMapper,Encoder.prototype.addReplacer,Document.prototype.add,Document.prototype.append,Document.prototype.search,Document.prototype.update,Document.prototype.remove,Document.prototype.contain,Document.prototype.clear,Document.prototype.cleanup,Document.prototype.addAsync,Document.prototype.appendAsync,Document.prototype.searchAsync,Document.prototype.updateAsync,Document.prototype.removeAsync,Document.prototype.mount,Document.prototype.commit,Document.prototype.destroy,Document.prototype.export,Document.prototype.import,Document.prototype.searchCache,Document.prototype.get,Document.prototype.set,Document.prototype.field,Document.prototype.index,Document.prototype.reg,Document.prototype.tag,Document.prototype.store,Document.prototype.fastupdate,Resolver.prototype.limit,Resolver.prototype.offset,Resolver.prototype.boost,Resolver.prototype.resolve,Resolver.prototype.or,Resolver.prototype.and,Resolver.prototype.xor,Resolver.prototype.not,Resolver.prototype.result,StorageInterface.db,StorageInterface.id,StorageInterface.support_tag_search,StorageInterface.fastupdate,StorageInterface.prototype.mount,StorageInterface.prototype.open,StorageInterface.prototype.close,StorageInterface.prototype.destroy,StorageInterface.prototype.clear,StorageInterface.prototype.get,StorageInterface.prototype.tag,StorageInterface.prototype.enrich,StorageInterface.prototype.has,StorageInterface.prototype.search,StorageInterface.prototype.info,StorageInterface.prototype.commit,StorageInterface.prototype.remove,KeystoreArray.length,KeystoreMap.size,KeystoreSet.size,Charset.LatinExact,Charset.LatinDefault,Charset.LatinSimple,Charset.LatinBalance,Charset.LatinAdvanced,Charset.LatinExtra,Charset.LatinSoundex,Charset.ArabicDefault,Charset.CjkDefault,Charset.CyrillicDefault,IndexOptions.preset,IndexOptions.context,IndexOptions.encoder,IndexOptions.encode,IndexOptions.resolution,IndexOptions.tokenize,IndexOptions.fastupdate,IndexOptions.score,IndexOptions.keystore,IndexOptions.rtl,IndexOptions.cache,IndexOptions.resolve,IndexOptions.db,IndexOptions.worker,IndexOptions.config,IndexOptions.priority,IndexOptions.export,IndexOptions.import,FieldOptions.preset,FieldOptions.context,FieldOptions.encoder,FieldOptions.encode,FieldOptions.resolution,FieldOptions.tokenize,FieldOptions.fastupdate,FieldOptions.score,FieldOptions.keystore,FieldOptions.rtl,FieldOptions.cache,FieldOptions.db,FieldOptions.config,FieldOptions.resolve,FieldOptions.field,FieldOptions.filter,FieldOptions.custom,FieldOptions.worker,DocumentOptions.context,DocumentOptions.encoder,DocumentOptions.encode,DocumentOptions.resolution,DocumentOptions.tokenize,DocumentOptions.fastupdate,DocumentOptions.score,DocumentOptions.keystore,DocumentOptions.rtl,DocumentOptions.cache,DocumentOptions.db,DocumentOptions.doc,DocumentOptions.document,DocumentOptions.worker,DocumentOptions.priority,DocumentOptions.export,DocumentOptions.import,ContextOptions.depth,ContextOptions.bidirectional,ContextOptions.resolution,DocumentDescriptor.field,DocumentDescriptor.index,DocumentDescriptor.tag,DocumentDescriptor.store,DocumentDescriptor.id,TagOptions.field,TagOptions.tag,TagOptions.filter,TagOptions.custom,TagOptions.keystore,TagOptions.db,TagOptions.config,StoreOptions.field,StoreOptions.filter,StoreOptions.custom,StoreOptions.config,SearchOptions.query,SearchOptions.limit,SearchOptions.offset,SearchOptions.context,SearchOptions.suggest,SearchOptions.resolve,SearchOptions.enrich,SearchOptions.resolution,DocumentSearchOptions.query,DocumentSearchOptions.limit,DocumentSearchOptions.offset,DocumentSearchOptions.context,DocumentSearchOptions.suggest,DocumentSearchOptions.enrich,DocumentSearchOptions.tag,DocumentSearchOptions.field,DocumentSearchOptions.index,DocumentSearchOptions.pluck,DocumentSearchOptions.merge,DocumentSearchOptions.highlight,EncoderOptions.rtl,EncoderOptions.dedupe,EncoderOptions.split,EncoderOptions.include,EncoderOptions.exclude,EncoderOptions.prepare,EncoderOptions.finalize,EncoderOptions.filter,EncoderOptions.matcher,EncoderOptions.mapper,EncoderOptions.stemmer,EncoderOptions.replacer,EncoderOptions.minlength,EncoderOptions.maxlength,EncoderOptions.cache,EncoderSplitOptions.letter,EncoderSplitOptions.number,EncoderSplitOptions.symbol,EncoderSplitOptions.punctuation,EncoderSplitOptions.control,EncoderSplitOptions.char,PersistentOptions.name,PersistentOptions.field,PersistentOptions.type,PersistentOptions.db,ResolverOptions.index,ResolverOptions.query,ResolverOptions.limit,ResolverOptions.offset,ResolverOptions.enrich,ResolverOptions.resolve,ResolverOptions.suggest,ResolverOptions.and,ResolverOptions.or,ResolverOptions.xor,ResolverOptions.not;const FlexSearch={Index:Index,Charset:Charset,Encoder:Encoder,Document:Document,Worker:WorkerIndex,Resolver:Resolver,IndexedDB:IdxDB,Language:{}};{const a="undefined"==typeof self?"undefined"==typeof global?self:global:self;let b;(b=a.define)&&b.amd?b([],function(){return FlexSearch}):"object"==typeof a.exports?a.exports=FlexSearch:a.FlexSearch=FlexSearch}export default FlexSearch;export{Index,Document,Encoder,Charset,WorkerIndex as Worker,Resolver,IdxDB as IndexedDB};
\ No newline at end of file
diff --git a/dist/module-min/charset.js b/dist/module-min/charset.js
index 39214a8..3d423d8 100644
--- a/dist/module-min/charset.js
+++ b/dist/module-min/charset.js
@@ -1 +1 @@
-import charset_latin_exact from"./charset/latin/exact.js";import charset_latin_default from"./charset/latin/default.js";import charset_latin_simple from"./charset/latin/simple.js";import charset_latin_balance from"./charset/latin/balance.js";import charset_latin_advanced from"./charset/latin/advanced.js";import charset_latin_extra from"./charset/latin/extra.js";import charset_latin_soundex from"./charset/latin/soundex.js";export const Exact=charset_latin_exact;export const Default=charset_latin_default;export const Normalize=charset_latin_simple;export const LatinBalance=charset_latin_balance;export const LatinAdvanced=charset_latin_advanced;export const LatinExtra=charset_latin_extra;export const LatinSoundex=charset_latin_soundex;export const LatinExact=charset_latin_exact;export const LatinDefault=charset_latin_default;export const LatinSimple=charset_latin_simple;export default{Exact:charset_latin_exact,Default:charset_latin_default,Normalize:charset_latin_simple,LatinBalance:charset_latin_balance,LatinAdvanced:charset_latin_advanced,LatinExtra:charset_latin_extra,LatinSoundex:charset_latin_soundex,LatinExact:charset_latin_exact,LatinDefault:charset_latin_default,LatinSimple:charset_latin_simple};
\ No newline at end of file
+import charset_latin_exact from"./charset/latin/exact.js";import charset_latin_normalize from"./charset/latin/normalize.js";import charset_latin_balance from"./charset/latin/balance.js";import charset_latin_advanced from"./charset/latin/advanced.js";import charset_latin_extra from"./charset/latin/extra.js";import charset_latin_soundex from"./charset/latin/soundex.js";export const Exact=charset_latin_exact;export const Default=charset_latin_normalize;export const Normalize=charset_latin_normalize;export const LatinBalance=charset_latin_balance;export const LatinAdvanced=charset_latin_advanced;export const LatinExtra=charset_latin_extra;export const LatinSoundex=charset_latin_soundex;export const LatinExact=charset_latin_exact;export const LatinDefault=charset_latin_normalize;export const LatinSimple=charset_latin_normalize;export default{Exact:charset_latin_exact,Default:charset_latin_normalize,Normalize:charset_latin_normalize,LatinBalance:charset_latin_balance,LatinAdvanced:charset_latin_advanced,LatinExtra:charset_latin_extra,LatinSoundex:charset_latin_soundex,LatinExact:charset_latin_exact,LatinDefault:charset_latin_normalize,LatinSimple:charset_latin_normalize};
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/advanced.js b/dist/module-min/charset/latin/advanced.js
index 59a7fa6..0296417 100644
--- a/dist/module-min/charset/latin/advanced.js
+++ b/dist/module-min/charset/latin/advanced.js
@@ -1 +1 @@
-import{EncoderOptions}from"../../type.js";import{soundex}from"./balance.js";export const matcher=new Map([["ae","a"],["oe","o"],["sh","s"],["kh","k"],["th","t"],["ph","f"],["pf","f"]]);export const replacer=[/([^aeo])h(.)/g,"$1$2",/([aeo])h([^aeo]|$)/g,"$1$2",/(.)\1+/g,"$1"];const options={normalize:!0,dedupe:!0,mapper:soundex,matcher:matcher,replacer:replacer};export default options;
\ No newline at end of file
+import{EncoderOptions}from"../../type.js";import{soundex}from"./balance.js";export const matcher=new Map([["ae","a"],["oe","o"],["sh","s"],["kh","k"],["th","t"],["ph","f"],["pf","f"]]);export const replacer=[/([^aeo])h(.)/g,"$1$2",/([aeo])h([^aeo]|$)/g,"$1$2",/(.)\1+/g,"$1"];const options={dedupe:!0,mapper:soundex,matcher:matcher,replacer:replacer};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/balance.js b/dist/module-min/charset/latin/balance.js
index 0236992..ad5d1db 100644
--- a/dist/module-min/charset/latin/balance.js
+++ b/dist/module-min/charset/latin/balance.js
@@ -1 +1 @@
-import{EncoderOptions}from"../../type.js";export const soundex=new Map([["b","p"],["v","f"],["w","f"],["z","s"],["x","s"],["d","t"],["n","m"],["c","k"],["g","k"],["j","k"],["q","k"],["i","e"],["y","e"],["u","o"]]);const options={normalize:!0,dedupe:!0,mapper:soundex};export default options;
\ No newline at end of file
+import{EncoderOptions}from"../../type.js";export const soundex=new Map([["b","p"],["v","f"],["w","f"],["z","s"],["x","s"],["d","t"],["n","m"],["c","k"],["g","k"],["j","k"],["q","k"],["i","e"],["y","e"],["u","o"]]);const options={dedupe:!0,mapper:soundex};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/default.js b/dist/module-min/charset/latin/default.js
deleted file mode 100644
index 5b7192e..0000000
--- a/dist/module-min/charset/latin/default.js
+++ /dev/null
@@ -1 +0,0 @@
-import{EncoderOptions}from"../../type.js";const options={normalize:!0};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/exact.js b/dist/module-min/charset/latin/exact.js
index e674552..46a2217 100644
--- a/dist/module-min/charset/latin/exact.js
+++ b/dist/module-min/charset/latin/exact.js
@@ -1 +1 @@
-import{EncoderOptions}from"../../type.js";const options={normalize:!1,numeric:!1,split:/\s+/};export default options;
\ No newline at end of file
+import{EncoderOptions}from"../../type.js";const options={normalize:!1,numeric:!1};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/extra.js b/dist/module-min/charset/latin/extra.js
index 2f1e13d..8c3b3fe 100644
--- a/dist/module-min/charset/latin/extra.js
+++ b/dist/module-min/charset/latin/extra.js
@@ -1 +1 @@
-import{EncoderOptions}from"../../type.js";import{soundex}from"./balance.js";import{matcher,replacer}from"./advanced.js";export const compact=[/(?!^)[aeo]/g,""];const options={normalize:!0,dedupe:!0,mapper:soundex,replacer:replacer.concat(compact),matcher:matcher};export default options;
\ No newline at end of file
+import{EncoderOptions}from"../../type.js";import{soundex}from"./balance.js";import{matcher,replacer}from"./advanced.js";export const compact=[/(?!^)[aeo]/g,""];const options={dedupe:!0,mapper:soundex,replacer:replacer.concat(compact),matcher:matcher};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/normalize.js b/dist/module-min/charset/latin/normalize.js
new file mode 100644
index 0000000..07081f7
--- /dev/null
+++ b/dist/module-min/charset/latin/normalize.js
@@ -0,0 +1 @@
+import{EncoderOptions}from"../../type.js";const options={};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/simple.js b/dist/module-min/charset/latin/simple.js
deleted file mode 100644
index 9692634..0000000
--- a/dist/module-min/charset/latin/simple.js
+++ /dev/null
@@ -1 +0,0 @@
-import{EncoderOptions}from"../../type.js";const options={normalize:!0,dedupe:!0};export default options;
\ No newline at end of file
diff --git a/dist/module-min/charset/latin/soundex.js b/dist/module-min/charset/latin/soundex.js
index fec07c5..fe355ea 100644
--- a/dist/module-min/charset/latin/soundex.js
+++ b/dist/module-min/charset/latin/soundex.js
@@ -1 +1 @@
-import{EncoderOptions}from"../../type.js";const options={normalize:!0,dedupe:!1,include:{letter:!0},finalize:function(a){for(let b=0;b<a.length;b++)a[b]=soundex(a[b])}};export default options;const codes={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,ß:2,d:3,t:3,l:4,m:5,n:5,r:6};function soundex(a){let b=a.charAt(0),c=codes[b];for(let d,e=1;e<a.length&&(d=a.charAt(e),!("h"!==d&&"w"!==d&&(d=codes[d],d&&d!==c&&(b+=d,c=d,4===b.length))));e++);return b}
\ No newline at end of file
+import{EncoderOptions}from"../../type.js";const options={dedupe:!1,include:{letter:!0},finalize:function(a){for(let b=0;b<a.length;b++)a[b]=soundex(a[b])}};export default options;const codes={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,ß:2,d:3,t:3,l:4,m:5,n:5,r:6};function soundex(a){let b=a.charAt(0),c=codes[b];for(let d,e=1;e<a.length&&(d=a.charAt(e),!("h"!==d&&"w"!==d&&(d=codes[d],d&&d!==c&&(b+=d,c=d,4===b.length))));e++);return b}
\ No newline at end of file
diff --git a/dist/module-min/charset/normalize.js b/dist/module-min/charset/polyfill.js
similarity index 100%
rename from dist/module-min/charset/normalize.js
rename to dist/module-min/charset/polyfill.js
diff --git a/dist/module-min/db/clickhouse/db.js b/dist/module-min/db/clickhouse/index.js
similarity index 81%
rename from dist/module-min/db/clickhouse/db.js
rename to dist/module-min/db/clickhouse/index.js
index 017dcbf..9e59122 100644
--- a/dist/module-min/db/clickhouse/db.js
+++ b/dist/module-min/db/clickhouse/index.js
@@ -1,4 +1,4 @@
-import{ClickHouse}from"clickhouse";import StorageInterface from"../interface.js";import{concat,toArray}from"../../common.js";const defaults={host:"http://localhost",port:"8123",debug:!1,basicAuth:null,isUseGzip:!1,trimQuery:!1,usePost:!1,format:"json",raw:!1,config:{output_format_json_quote_64bit_integers:0,enable_http_compression:0,database:"default"}},VERSION=1,fields=["map","ctx","tag","reg","cfg"],types={text:"String",char:"String",varchar:"String",string:"String",number:"Int32",numeric:"Int32",integer:"Int32",smallint:"Int16",tinyint:"Int8",mediumint:"Int32",int:"Int32",int8:"Int8",uint8:"UInt8",int16:"Int16",uint16:"UInt16",int32:"Int32",uint32:"UInt32",int64:"Int64",uint64:"UInt64",bigint:"Int64"};function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_]/g,"")}let DB;export default function ClickhouseDB(a,b={}){if(!this)return new ClickhouseDB(a,b);if("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?"_"+sanitize(a):""),this.field=b.field?"_"+sanitize(b.field):"",this.type=b.type?types[b.type.toLowerCase()]:"String",!this.type)throw new Error("Unknown type of ID '"+b.type+"'");this.support_tag_search=!0,this.db=DB||(DB=b.db||null),Object.assign(defaults,b),b.database&&(defaults.config.database=b.database),this.db&&delete defaults.db}ClickhouseDB.prototype.mount=function(a){return a.encoder?(defaults.resolution=Math.max(a.resolution,a.resolution_ctx),a.db=this,this.open()):a.mount(this)},ClickhouseDB.prototype.open=async function(){this.db||(this.db=DB||(DB=new ClickHouse(defaults)));const a=await this.db.query(`
+import{ClickHouse}from"clickhouse";import StorageInterface from"../interface.js";import{concat,toArray}from"../../common.js";const defaults={host:"http://localhost",port:"8123",debug:!1,basicAuth:null,isUseGzip:!1,trimQuery:!1,usePost:!1,format:"json",raw:!1,config:{output_format_json_quote_64bit_integers:0,enable_http_compression:0,database:"default"}},VERSION=1,fields=["map","ctx","tag","reg","cfg"],types={text:"String",char:"String",varchar:"String",string:"String",number:"Int32",numeric:"Int32",integer:"Int32",smallint:"Int16",tinyint:"Int8",mediumint:"Int32",int:"Int32",int8:"Int8",uint8:"UInt8",int16:"Int16",uint16:"UInt16",int32:"Int32",uint32:"UInt32",int64:"Int64",uint64:"UInt64",bigint:"Int64"};function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_]/g,"")}let Index;export default function ClickhouseDB(a,b={}){if(!this)return new ClickhouseDB(a,b);if("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?"_"+sanitize(a):""),this.field=b.field?"_"+sanitize(b.field):"",this.type=b.type?types[b.type.toLowerCase()]:"String",!this.type)throw new Error("Unknown type of ID '"+b.type+"'");this.support_tag_search=!0,this.db=Index||(Index=b.db||null),Object.assign(defaults,b),b.database&&(defaults.config.database=b.database),this.db&&delete defaults.db}ClickhouseDB.prototype.mount=function(a){return a.encoder?(defaults.resolution=Math.max(a.resolution,a.resolution_ctx),a.db=this,this.open()):a.mount(this)},ClickhouseDB.prototype.open=async function(){this.db||(this.db=Index||(Index=new ClickHouse(defaults)));const a=await this.db.query(`
         SELECT 1 FROM system.databases WHERE name = '${this.id}';
     `).toPromise();a&&a.length||(await this.db.query(`
             CREATE DATABASE IF NOT EXISTS ${this.id};
@@ -41,7 +41,7 @@ import{ClickHouse}from"clickhouse";import StorageInterface from"../interface.js"
                         cfg String
                     ) 
                     ENGINE = TinyLog;
-                `).toPromise();}return this.db},ClickhouseDB.prototype.close=function(){return this.db=DB=null,this},ClickhouseDB.prototype.destroy=function(){return Promise.all([this.db.query(`DROP TABLE ${this.id}.map${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.ctx${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.tag${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.cfg${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.reg;`).toPromise()])},ClickhouseDB.prototype.clear=function(){return Promise.all([this.db.query(`TRUNCATE TABLE ${this.id}.map${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.ctx${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.tag${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.cfg${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.reg;`).toPromise()])};function create_result(a,b,c){if(b){for(let b=0;b<a.length;b++)c?a[b].doc&&(a[b].doc=JSON.parse(a[b].doc)):a[b]=a[b].id;return a}else{const b=[];for(let d,e=0;e<a.length;e++)d=a[e],b[d.res]||(b[d.res]=[]),b[d.res].push(c?d:d.id);return b}}ClickhouseDB.prototype.get=function(a,b,c=0,d=0,e=!0,f=!1,g){let h,j="",k=b?{ctx:b,key:a}:{key:a},l=this.id+(b?".ctx":".map")+this.field;if(g)for(let a=0,b=1;a<g.length;a+=2)j+=` AND ${l}.id IN (SELECT id FROM ${this.id}.tag_${sanitize(g[a])} WHERE tag = {tag${b}:String})`,k["tag"+b]=g[a+1],b++;return h=b?this.db.query(`
+                `).toPromise();}return this.db},ClickhouseDB.prototype.close=function(){return this.db=Index=null,this},ClickhouseDB.prototype.destroy=function(){return Promise.all([this.db.query(`DROP TABLE ${this.id}.map${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.ctx${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.tag${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.cfg${this.field};`).toPromise(),this.db.query(`DROP TABLE ${this.id}.reg;`).toPromise()])},ClickhouseDB.prototype.clear=function(){return Promise.all([this.db.query(`TRUNCATE TABLE ${this.id}.map${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.ctx${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.tag${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.cfg${this.field};`).toPromise(),this.db.query(`TRUNCATE TABLE ${this.id}.reg;`).toPromise()])};function create_result(a,b,c){if(b){for(let b=0;b<a.length;b++)c?a[b].doc&&(a[b].doc=JSON.parse(a[b].doc)):a[b]=a[b].id;return a}else{const b=[];for(let d,e=0;e<a.length;e++)d=a[e],b[d.res]||(b[d.res]=[]),b[d.res].push(c?d:d.id);return b}}ClickhouseDB.prototype.get=function(a,b,c=0,d=0,e=!0,f=!1,g){let h,j="",k=b?{ctx:b,key:a}:{key:a},l=this.id+(b?".ctx":".map")+this.field;if(g)for(let a=0,b=1;a<g.length;a+=2)j+=` AND ${l}.id IN (SELECT id FROM ${this.id}.tag_${sanitize(g[a])} WHERE tag = {tag${b}:String})`,k["tag"+b]=g[a+1],b++;return h=b?this.db.query(`
             SELECT ${l}.id
                    ${e?"":", res"}
                    ${f?", doc":""}
diff --git a/dist/module-min/db/indexeddb/db.js b/dist/module-min/db/indexeddb/db.js
deleted file mode 100644
index c6065c3..0000000
--- a/dist/module-min/db/indexeddb/db.js
+++ /dev/null
@@ -1 +0,0 @@
-import{PersistentOptions,SearchResults,EnrichedSearchResults}from"../../type.js";const VERSION=1,IndexedDB="undefined"!=typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),IDBTransaction="undefined"!=typeof window&&(window.IDBTransaction||window.webkitIDBTransaction||window.msIDBTransaction),IDBKeyRange="undefined"!=typeof window&&(window.IDBKeyRange||window.webkitIDBKeyRange||window.msIDBKeyRange),fields=["map","ctx","tag","reg","cfg"];import StorageInterface from"../interface.js";import{create_object,toArray}from"../../common.js";function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_\-]/g,"")}const DB=create_object();export default function IdxDB(a,b={}){return this?void("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?":"+sanitize(a):""),this.field=b.field?sanitize(b.field):"",this.type=b.type,this.support_tag_search=!1,this.fastupdate=!1,this.db=null,this.trx={}):new IdxDB(a,b)}IdxDB.prototype.mount=function(a){return a.encoder?(a.db=this,this.open()):a.mount(this)},IdxDB.prototype.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist(),DB[a.id]||(DB[a.id]=[]),DB[a.id].push(a.field);const b=IndexedDB.open(a.id,VERSION);return b.onupgradeneeded=function(){const b=a.db=this.result;for(let c,d=0;d<fields.length;d++){c=fields[d];for(let d,e=0;e<DB[a.id].length;e++)d=DB[a.id][e],b.objectStoreNames.contains(c+("reg"===c?"":d?":"+d:""))||b.createObjectStore(c+("reg"===c?"":d?":"+d:""))}},a.db=promisfy(b,function(b){a.db=b,a.db.onversionchange=function(){a.close()}})},IdxDB.prototype.close=function(){this.db&&this.db.close(),this.db=null},IdxDB.prototype.destroy=function(){const a=IndexedDB.deleteDatabase(this.id);return promisfy(a)},IdxDB.prototype.clear=function(){const a=[];for(let b,c=0;c<fields.length;c++){b=fields[c];for(let c,d=0;d<DB[this.id].length;d++)c=DB[this.id][d],a.push(b+("reg"===b?"":c?":"+c:""))}const b=this.db.transaction(a,"readwrite");for(let c=0;c<a.length;c++)b.objectStore(a[c]).clear();return promisfy(b)},IdxDB.prototype.get=function(a,b,c=0,d=0,e=!0,f=!1){const g=this.db.transaction((b?"ctx":"map")+(this.field?":"+this.field:""),"readonly"),h=g.objectStore((b?"ctx":"map")+(this.field?":"+this.field:"")),i=h.get(b?b+":"+a:a),j=this;return promisfy(i).then(function(a){let b=[];if(!a||!a.length)return b;if(e){if(!c&&!d&&1===a.length)return a[0];for(let e,f=0;f<a.length;f++)if((e=a[f])&&e.length){if(d>=e.length){d-=e.length;continue}const a=c?d+Math.min(e.length-d,c):e.length;for(let c=d;c<a;c++)b.push(e[c]);if(d=0,b.length===c)break}return f?j.enrich(b):b}return a})},IdxDB.prototype.tag=function(a,b=0,c=0,d=!1){const e=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly"),f=e.objectStore("tag"+(this.field?":"+this.field:"")),g=f.get(a),h=this;return promisfy(g).then(function(a){if(!a||!a.length||c>=a.length)return[];if(!b&&!c)return a;const e=a.slice(c,c+b);return d?h.enrich(e):e})},IdxDB.prototype.enrich=function(a){"object"!=typeof a&&(a=[a]);const b=this.db.transaction("reg","readonly"),c=b.objectStore("reg"),d=[];for(let b=0;b<a.length;b++)d[b]=promisfy(c.get(a[b]));return Promise.all(d).then(function(b){for(let c=0;c<b.length;c++)b[c]={id:a[c],doc:b[c]?JSON.parse(b[c]):null};return b})},IdxDB.prototype.has=function(a){const b=this.db.transaction("reg","readonly"),c=b.objectStore("reg"),d=c.getKey(a);return promisfy(d).then(function(a){return!!a})},IdxDB.prototype.search=null,IdxDB.prototype.info=function(){},IdxDB.prototype.transaction=function(a,b,c){const d=a+("reg"===a?"":this.field?":"+this.field:"");let e=this.trx[d+":"+b];if(e)return c.call(this,e);let f=this.db.transaction(d,b);this.trx[d+":"+b]=e=f.objectStore(d);const g=c.call(this,e);return this.trx[d+":"+b]=null,promisfy(f).finally(function(){return f=e=null,g})},IdxDB.prototype.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 a,c=0;c<d.length;c++)if(a=d[c],a.clear){await this.clear(),b=!0;break}else d[c]=a.del;b||(!c&&(d=d.concat(toArray(a.reg))),d.length&&(await this.remove(d)))}a.reg.size&&(await this.transaction("map","readwrite",function(c){for(const d of a.map){const a=d[0],e=d[1];if(e.length){if(b){c.put(e,a);continue}c.get(a).onsuccess=function(){let b,d=this.result;if(d&&d.length){const a=Math.max(d.length,e.length);for(let c,f,g=0;g<a;g++)if(f=e[g],f&&f.length)if(c=d[g],c&&c.length){for(let a=0;a<f.length;a++)c.push(f[a]);b=1}else d[g]=f,b=1}else d=e,b=1;b&&c.put(d,a)}}}}),await this.transaction("ctx","readwrite",function(c){for(const d of a.ctx){const a=d[0],e=d[1];for(const d of e){const e=d[0],f=d[1];if(f.length){if(b){c.put(f,a+":"+e);continue}c.get(a+":"+e).onsuccess=function(){let b,d=this.result;if(d&&d.length){const a=Math.max(d.length,f.length);for(let c,e,g=0;g<a;g++)if(e=f[g],e&&e.length)if(c=d[g],c&&c.length){for(let a=0;a<e.length;a++)c.push(e[a]);b=1}else d[g]=e,b=1}else d=f,b=1;b&&c.put(d,a+":"+e)}}}}}),a.store?await this.transaction("reg","readwrite",function(b){for(const c of a.store){const a=c[0],d=c[1];b.put("object"==typeof d?JSON.stringify(d):1,a)}}):!a.bypass&&(await this.transaction("reg","readwrite",function(b){for(const c of a.reg.keys())b.put(1,c)})),a.tag&&(await this.transaction("tag","readwrite",function(b){for(const c of a.tag){const a=c[0],d=c[1];d.length&&(b.get(a).onsuccess=function(){let c=this.result;c=c&&c.length?c.concat(d):d,b.put(c,a)})}})),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function handle(a,b,c){const d=a.value;let e,f=0;for(let g,h=0;h<d.length;h++){if(g=c?d:d[h]){for(let a,c,f=0;f<b.length;f++)if(c=b[f],a=g.indexOf(c),0<=a)if(e=1,1<g.length)g.splice(a,1);else{d[h]=[];break}f+=g.length}if(c)break}f?e&&a.update(d):a.delete(),a.continue()}IdxDB.prototype.remove=function(a){const b=this;return"object"!=typeof a&&(a=[a]),Promise.all([b.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){const b=this.result;b&&handle(b,a)}}),b.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){const b=this.result;b&&handle(b,a)}}),b.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){const b=this.result;b&&handle(b,a,!0)}}),b.transaction("reg","readwrite",function(b){for(let c=0;c<a.length;c++)b.delete(a[c])})])};function promisfy(a,b){return new Promise((c,d)=>{a.onsuccess=a.oncomplete=function(){b&&b(this.result),b=null,c(this.result)},a.onerror=a.onblocked=d,a=null})}
\ No newline at end of file
diff --git a/dist/module-min/db/indexeddb/index.js b/dist/module-min/db/indexeddb/index.js
new file mode 100644
index 0000000..a435512
--- /dev/null
+++ b/dist/module-min/db/indexeddb/index.js
@@ -0,0 +1 @@
+import{PersistentOptions,SearchResults,EnrichedSearchResults}from"../../type.js";const VERSION=1,IndexedDB="undefined"!=typeof window&&(window.indexedDB||window.mozIndexedDB||window.webkitIndexedDB||window.msIndexedDB),IDBTransaction="undefined"!=typeof window&&(window.IDBTransaction||window.webkitIDBTransaction||window.msIDBTransaction),IDBKeyRange="undefined"!=typeof window&&(window.IDBKeyRange||window.webkitIDBKeyRange||window.msIDBKeyRange),fields=["map","ctx","tag","reg","cfg"];import StorageInterface from"../interface.js";import{create_object,toArray}from"../../common.js";function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_\-]/g,"")}const Index=create_object();export default function IdxDB(a,b={}){return this?void("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?":"+sanitize(a):""),this.field=b.field?sanitize(b.field):"",this.type=b.type,this.support_tag_search=!1,this.fastupdate=!1,this.db=null,this.trx={}):new IdxDB(a,b)}IdxDB.prototype.mount=function(a){return a.encoder?(a.db=this,this.open()):a.mount(this)},IdxDB.prototype.open=function(){if(this.db)return this.db;let a=this;navigator.storage&&navigator.storage.persist(),Index[a.id]||(Index[a.id]=[]),Index[a.id].push(a.field);const b=IndexedDB.open(a.id,VERSION);return b.onupgradeneeded=function(){const b=a.db=this.result;for(let c,d=0;d<fields.length;d++){c=fields[d];for(let d,e=0;e<Index[a.id].length;e++)d=Index[a.id][e],b.objectStoreNames.contains(c+("reg"===c?"":d?":"+d:""))||b.createObjectStore(c+("reg"===c?"":d?":"+d:""))}},a.db=promisfy(b,function(b){a.db=b,a.db.onversionchange=function(){a.close()}})},IdxDB.prototype.close=function(){this.db&&this.db.close(),this.db=null},IdxDB.prototype.destroy=function(){const a=IndexedDB.deleteDatabase(this.id);return promisfy(a)},IdxDB.prototype.clear=function(){const a=[];for(let b,c=0;c<fields.length;c++){b=fields[c];for(let c,d=0;d<Index[this.id].length;d++)c=Index[this.id][d],a.push(b+("reg"===b?"":c?":"+c:""))}const b=this.db.transaction(a,"readwrite");for(let c=0;c<a.length;c++)b.objectStore(a[c]).clear();return promisfy(b)},IdxDB.prototype.get=function(a,b,c=0,d=0,e=!0,f=!1){const g=this.db.transaction((b?"ctx":"map")+(this.field?":"+this.field:""),"readonly"),h=g.objectStore((b?"ctx":"map")+(this.field?":"+this.field:"")),i=h.get(b?b+":"+a:a),j=this;return promisfy(i).then(function(a){let b=[];if(!a||!a.length)return b;if(e){if(!c&&!d&&1===a.length)return a[0];for(let e,f=0;f<a.length;f++)if((e=a[f])&&e.length){if(d>=e.length){d-=e.length;continue}const a=c?d+Math.min(e.length-d,c):e.length;for(let c=d;c<a;c++)b.push(e[c]);if(d=0,b.length===c)break}return f?j.enrich(b):b}return a})},IdxDB.prototype.tag=function(a,b=0,c=0,d=!1){const e=this.db.transaction("tag"+(this.field?":"+this.field:""),"readonly"),f=e.objectStore("tag"+(this.field?":"+this.field:"")),g=f.get(a),h=this;return promisfy(g).then(function(a){if(!a||!a.length||c>=a.length)return[];if(!b&&!c)return a;const e=a.slice(c,c+b);return d?h.enrich(e):e})},IdxDB.prototype.enrich=function(a){"object"!=typeof a&&(a=[a]);const b=this.db.transaction("reg","readonly"),c=b.objectStore("reg"),d=[];for(let b=0;b<a.length;b++)d[b]=promisfy(c.get(a[b]));return Promise.all(d).then(function(b){for(let c=0;c<b.length;c++)b[c]={id:a[c],doc:b[c]?JSON.parse(b[c]):null};return b})},IdxDB.prototype.has=function(a){const b=this.db.transaction("reg","readonly"),c=b.objectStore("reg"),d=c.getKey(a);return promisfy(d).then(function(a){return!!a})},IdxDB.prototype.search=null,IdxDB.prototype.info=function(){},IdxDB.prototype.transaction=function(a,b,c){const d=a+("reg"===a?"":this.field?":"+this.field:"");let e=this.trx[d+":"+b];if(e)return c.call(this,e);let f=this.db.transaction(d,b);this.trx[d+":"+b]=e=f.objectStore(d);const g=c.call(this,e);return this.trx[d+":"+b]=null,promisfy(f).finally(function(){return f=e=null,g})},IdxDB.prototype.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 a,c=0;c<d.length;c++)if(a=d[c],a.clear){await this.clear(),b=!0;break}else d[c]=a.del;b||(!c&&(d=d.concat(toArray(a.reg))),d.length&&(await this.remove(d)))}a.reg.size&&(await this.transaction("map","readwrite",function(c){for(const d of a.map){const a=d[0],e=d[1];if(e.length){if(b){c.put(e,a);continue}c.get(a).onsuccess=function(){let b,d=this.result;if(d&&d.length){const a=Math.max(d.length,e.length);for(let c,f,g=0;g<a;g++)if(f=e[g],f&&f.length)if(c=d[g],c&&c.length){for(let a=0;a<f.length;a++)c.push(f[a]);b=1}else d[g]=f,b=1}else d=e,b=1;b&&c.put(d,a)}}}}),await this.transaction("ctx","readwrite",function(c){for(const d of a.ctx){const a=d[0],e=d[1];for(const d of e){const e=d[0],f=d[1];if(f.length){if(b){c.put(f,a+":"+e);continue}c.get(a+":"+e).onsuccess=function(){let b,d=this.result;if(d&&d.length){const a=Math.max(d.length,f.length);for(let c,e,g=0;g<a;g++)if(e=f[g],e&&e.length)if(c=d[g],c&&c.length){for(let a=0;a<e.length;a++)c.push(e[a]);b=1}else d[g]=e,b=1}else d=f,b=1;b&&c.put(d,a+":"+e)}}}}}),a.store?await this.transaction("reg","readwrite",function(b){for(const c of a.store){const a=c[0],d=c[1];b.put("object"==typeof d?JSON.stringify(d):1,a)}}):!a.bypass&&(await this.transaction("reg","readwrite",function(b){for(const c of a.reg.keys())b.put(1,c)})),a.tag&&(await this.transaction("tag","readwrite",function(b){for(const c of a.tag){const a=c[0],d=c[1];d.length&&(b.get(a).onsuccess=function(){let c=this.result;c=c&&c.length?c.concat(d):d,b.put(c,a)})}})),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear())};function handle(a,b,c){const d=a.value;let e,f=0;for(let g,h=0;h<d.length;h++){if(g=c?d:d[h]){for(let a,c,f=0;f<b.length;f++)if(c=b[f],a=g.indexOf(c),0<=a)if(e=1,1<g.length)g.splice(a,1);else{d[h]=[];break}f+=g.length}if(c)break}f?e&&a.update(d):a.delete(),a.continue()}IdxDB.prototype.remove=function(a){const b=this;return"object"!=typeof a&&(a=[a]),Promise.all([b.transaction("map","readwrite",function(b){b.openCursor().onsuccess=function(){const b=this.result;b&&handle(b,a)}}),b.transaction("ctx","readwrite",function(b){b.openCursor().onsuccess=function(){const b=this.result;b&&handle(b,a)}}),b.transaction("tag","readwrite",function(b){b.openCursor().onsuccess=function(){const b=this.result;b&&handle(b,a,!0)}}),b.transaction("reg","readwrite",function(b){for(let c=0;c<a.length;c++)b.delete(a[c])})])};function promisfy(a,b){return new Promise((c,d)=>{a.onsuccess=a.oncomplete=function(){b&&b(this.result),b=null,c(this.result)},a.onerror=a.onblocked=d,a=null})}
\ No newline at end of file
diff --git a/dist/module-min/db/mongodb/db.js b/dist/module-min/db/mongodb/db.js
deleted file mode 100644
index ce3915a..0000000
--- a/dist/module-min/db/mongodb/db.js
+++ /dev/null
@@ -1 +0,0 @@
-import{MongoClient}from"mongodb";const defaults={host:"localhost",port:"27017",user:null,pass:null},VERSION=1,fields=["map","ctx","tag","reg","cfg"];import StorageInterface from"../interface.js";import{toArray}from"../../common.js";function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_\-]/g,"")}let CLIENT,DB=Object.create(null);export default function MongoDB(a,b={}){return this?void("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?"-"+sanitize(a):""),this.field=b.field?"-"+sanitize(b.field):"",this.type=b.type||"",this.db=b.db||DB[this.id]||CLIENT||null,this.trx=!1,this.support_tag_search=!0,Object.assign(defaults,b),this.db&&delete defaults.db):new MongoDB(a,b)}MongoDB.prototype.mount=function(a){return a.encoder?(a.db=this,this.open()):a.mount(this)};async function createCollection(a,b,c){"map"===b?(await a.createCollection("map"+c),await a.collection("map"+c).createIndex({key:1}),await a.collection("map"+c).createIndex({id:1})):"ctx"===b?(await a.createCollection("ctx"+c),await a.collection("ctx"+c).createIndex({ctx:1,key:1}),await a.collection("ctx"+c).createIndex({id:1})):"tag"===b?(await a.createCollection("tag"+c),await a.collection("tag"+c).createIndex({tag:1}),await a.collection("tag"+c).createIndex({id:1})):"reg"===b?(await a.createCollection("reg"),await a.collection("reg").createIndex({id:1})):"cfg"===b?await a.createCollection("cfg"+c):void 0}MongoDB.prototype.open=async function(){if(!this.db&&!(this.db=DB[this.id])&&!(this.db=CLIENT)){let a=defaults.url;a||(a=defaults.user?`mongodb://${defaults.user}:${defaults.pass}@${defaults.host}:${defaults.port}`:`mongodb://${defaults.host}:${defaults.port}`),this.db=CLIENT=new MongoClient(a),await this.db.connect()}this.db.db&&(this.db=DB[this.id]=this.db.db(this.id));const a=await this.db.listCollections().toArray();for(let b,c=0;c<fields.length;c++){b=!1;for(let d=0;d<a.length;d++)if(a[d].name===fields[c]+("reg"===fields[c]?"":this.field)){b=!0;break}b||(await createCollection(this.db,fields[c],this.field))}return this.db},MongoDB.prototype.close=function(){return this.db=CLIENT=null,DB[this.id]=null,this},MongoDB.prototype.destroy=function(){return Promise.all([this.db.dropCollection("map"+this.field),this.db.dropCollection("ctx"+this.field),this.db.dropCollection("tag"+this.field),this.db.dropCollection("cfg"+this.field),this.db.dropCollection("reg")])};async function clear(a){await this.db.dropCollection(a),await createCollection(this.db,a,this.field)}MongoDB.prototype.clear=function(){return Promise.all([clear.call(this,"map"+this.field),clear.call(this,"ctx"+this.field),clear.call(this,"tag"+this.field),clear.call(this,"cfg"+this.field),clear.call(this,"reg")])};function create_result(a,b,c){if(b){if(!c)for(let b=0;b<a.length;b++)a[b]=a[b].id;return a}else{const b=[];for(let d,e=0;e<a.length;e++)d=a[e],b[d.res]||(b[d.res]=[]),b[d.res].push(c?d:d.id);return b}}MongoDB.prototype.get=async function(a,b,c=0,d=0,e=!0,f=!1,g){let h,i=b?{ctx:b,key:a}:{key:a};if(!f&&!g)h=await this.db.collection((b?"ctx":"map")+this.field).find(i,{projection:{_id:0,res:1,id:1},limit:c,skip:d}).toArray();else{const a={_id:0,id:1},j=[{$match:i}];if(e||(a.res=1),f&&(a.doc="$doc.doc",j.push({$lookup:{from:"reg",localField:"id",foreignField:"id",as:"doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}})),g){const b={};for(let c=0,d=1;c<g.length;c+=2)a["tag"+d]="$tag"+d+".tag",b["tag"+d]=g[c+1],j.push({$lookup:{from:"tag-"+sanitize(g[c]),localField:"id",foreignField:"id",as:"tag"+d}}),d++;j.push({$project:a},{$match:b},{$project:{id:1,doc:1}})}else j.push({$project:a});j.push({$sort:{res:1}},{$skip:d},{$limit:c}),h=[];for(const a=await this.db.collection((b?"ctx":"map")+this.field).aggregate(j);;){const b=await a.next();if(b)h.push(b);else break}}return create_result(h,e,f)},MongoDB.prototype.tag=async function(a,b=0,c=0,d=!1){if(!d){const d=await this.db.collection("tag"+this.field).find({tag:a},{projection:{_id:0,id:1},limit:b,skip:c}).toArray();return create_result(d,!0,!1)}else{const d=[{$match:{tag:a}},{$skip:c},{$limit:b},{$lookup:{from:"reg",localField:"id",foreignField:"id",as:"doc"}},{$project:{_id:0,id:1,doc:"$doc.doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}}];let e=[];for(const a=await this.db.collection("tag"+this.field).aggregate(d);;){const b=await a.next();if(b)e.push(b);else break}return e}},MongoDB.prototype.enrich=function(a){return"object"!=typeof a&&(a=[a]),this.db.collection("reg").find({id:{$in:a}},{projection:{_id:0,id:1,doc:1}}).toArray()},MongoDB.prototype.has=function(a){return this.db.collection("reg").countDocuments({id:a},{limit:1}).then(function(a){return!!a})},MongoDB.prototype.search=async function(a,b,c=100,d=0,e=!1,f=!0,g=!1,h){let i,j=[];if(1<b.length&&a.depth){let j,k=[],l=b[0];for(let c=1;c<b.length;c++){j=b[c];const d=a.bidirectional&&j>l;k.push({ctx:d?j:l,key:d?l:j}),l=j}const m={_id:1};f||(m.res=1),g&&(m.doc=1);const n=[{$match:{$or:k}},{$group:{_id:"$id",count:{$sum:1},res:e?{$sum:"$res"}:{$sum:"$res"}}}];if(e||n.push({$match:{count:b.length-1}}),g&&(m.doc="$doc.doc",n.push({$lookup:{from:"reg",localField:"_id",foreignField:"id",as:"doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}})),h){const a={};for(let b=0,c=1;b<h.length;b+=2)m["tag"+c]="$tag"+c+".tag",a["tag"+c]=h[b+1],n.push({$lookup:{from:"tag-"+sanitize(h[b]),localField:"_id",foreignField:"id",as:"tag"+c}}),c++;n.push({$match:a})}else;n.push({$sort:e?{count:-1,res:1}:{res:1}},{$skip:d},{$limit:c}),n.push({$project:m}),i=await this.db.collection("ctx"+this.field).aggregate(n)}else{const a={_id:1};f||(a.res=1),g&&(a.doc=1);const j=[{$match:{key:{$in:b}}},{$group:{_id:"$id",count:{$sum:1},res:e?{$sum:"$res"}:{$sum:"$res"}}}];if(e||j.push({$match:{count:b.length}}),g&&(a.doc="$doc.doc",j.push({$lookup:{from:"reg",localField:"_id",foreignField:"id",as:"doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}})),h){const b={};for(let c=0,d=1;c<h.length;c+=2)a["tag"+d]="$tag"+d+".tag",b["tag"+d]=h[c+1],j.push({$lookup:{from:"tag-"+sanitize(h[c]),localField:"_id",foreignField:"id",as:"tag"+d}}),d++;j.push({$match:b})}else;j.push({$sort:e?{count:-1,res:1}:{res:1}},{$skip:d},{$limit:c}),j.push({$project:a}),i=await this.db.collection("map"+this.field).aggregate(j)}for(;;){const a=await i.next();if(a)f&&!g?j.push(a._id):(a.id=a._id,delete a._id,j.push(a));else break}return f&&!g?j:create_result(j,f,g)},MongoDB.prototype.info=function(){},MongoDB.prototype.transaction=function(a){return a.call(this)},MongoDB.prototype.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 a,c=0;c<d.length;c++)if(a=d[c],a.clear){await this.clear(),b=!0;break}else d[c]=a.del;b||(!c&&(d=d.concat(toArray(a.reg))),d.length&&(await this.remove(d)))}if(a.reg.size){const b=[];if(a.map.size){let c=[];for(const b of a.map){const a=b[0],d=b[1];for(let b,e=0;e<d.length;e++)if((b=d[e])&&b.length){this.type||(this.type=typeof b[0]);for(let d=0;d<b.length;d++)c.push({key:a,res:e,id:b[d]})}}c.length&&b.push(this.db.collection("map"+this.field).insertMany(c))}if(a.ctx.size){let c=[];for(const b of a.ctx){const a=b[0],d=b[1];for(const b of d){const d=b[0],e=b[1];for(let b,f=0;f<e.length;f++)if((b=e[f])&&b.length)for(let e=0;e<b.length;e++)c.push({ctx:a,key:d,res:f,id:b[e]})}}c.length&&b.push(this.db.collection("ctx"+this.field).insertMany(c))}if(a.tag){let c=[];for(const b of a.tag){const a=b[0],d=b[1];if(d.length)for(let b=0;b<d.length;b++)c.push({tag:a,id:d[b]})}c.length&&b.push(this.db.collection("tag"+this.field).insertMany(c))}let c=[];if(a.store)for(const b of a.store.entries()){const a=b[0],d=b[1];c.push({id:a,doc:d})}else if(!a.bypass)for(const b of a.reg.keys())c.push({id:b});c.length&&b.push(this.db.collection("reg").insertMany(c)),b.length&&(await Promise.all(b)),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear()}},MongoDB.prototype.remove=function(a){if(a||0===a)return"object"!=typeof a&&(a=[a]),Promise.all([this.db.collection("map"+this.field).deleteMany({id:{$in:a}}),this.db.collection("ctx"+this.field).deleteMany({id:{$in:a}}),this.db.collection("tag"+this.field).deleteMany({id:{$in:a}}),this.db.collection("reg").deleteMany({id:{$in:a}})])};
\ No newline at end of file
diff --git a/dist/module-min/db/mongodb/index.js b/dist/module-min/db/mongodb/index.js
new file mode 100644
index 0000000..0889c88
--- /dev/null
+++ b/dist/module-min/db/mongodb/index.js
@@ -0,0 +1 @@
+import{MongoClient}from"mongodb";const defaults={host:"localhost",port:"27017",user:null,pass:null},VERSION=1,fields=["map","ctx","tag","reg","cfg"];import StorageInterface from"../interface.js";import{toArray}from"../../common.js";function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_\-]/g,"")}let CLIENT,Index=Object.create(null);export default function MongoDB(a,b={}){return this?void("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?"-"+sanitize(a):""),this.field=b.field?"-"+sanitize(b.field):"",this.type=b.type||"",this.db=b.db||Index[this.id]||CLIENT||null,this.trx=!1,this.support_tag_search=!0,Object.assign(defaults,b),this.db&&delete defaults.db):new MongoDB(a,b)}MongoDB.prototype.mount=function(a){return a.encoder?(a.db=this,this.open()):a.mount(this)};async function createCollection(a,b,c){"map"===b?(await a.createCollection("map"+c),await a.collection("map"+c).createIndex({key:1}),await a.collection("map"+c).createIndex({id:1})):"ctx"===b?(await a.createCollection("ctx"+c),await a.collection("ctx"+c).createIndex({ctx:1,key:1}),await a.collection("ctx"+c).createIndex({id:1})):"tag"===b?(await a.createCollection("tag"+c),await a.collection("tag"+c).createIndex({tag:1}),await a.collection("tag"+c).createIndex({id:1})):"reg"===b?(await a.createCollection("reg"),await a.collection("reg").createIndex({id:1})):"cfg"===b?await a.createCollection("cfg"+c):void 0}MongoDB.prototype.open=async function(){if(!this.db&&!(this.db=Index[this.id])&&!(this.db=CLIENT)){let a=defaults.url;a||(a=defaults.user?`mongodb://${defaults.user}:${defaults.pass}@${defaults.host}:${defaults.port}`:`mongodb://${defaults.host}:${defaults.port}`),this.db=CLIENT=new MongoClient(a),await this.db.connect()}this.db.db&&(this.db=Index[this.id]=this.db.db(this.id));const a=await this.db.listCollections().toArray();for(let b,c=0;c<fields.length;c++){b=!1;for(let d=0;d<a.length;d++)if(a[d].name===fields[c]+("reg"===fields[c]?"":this.field)){b=!0;break}b||(await createCollection(this.db,fields[c],this.field))}return this.db},MongoDB.prototype.close=function(){return this.db=CLIENT=null,Index[this.id]=null,this},MongoDB.prototype.destroy=function(){return Promise.all([this.db.dropCollection("map"+this.field),this.db.dropCollection("ctx"+this.field),this.db.dropCollection("tag"+this.field),this.db.dropCollection("cfg"+this.field),this.db.dropCollection("reg")])};async function clear(a){await this.db.dropCollection(a),await createCollection(this.db,a,this.field)}MongoDB.prototype.clear=function(){return Promise.all([clear.call(this,"map"+this.field),clear.call(this,"ctx"+this.field),clear.call(this,"tag"+this.field),clear.call(this,"cfg"+this.field),clear.call(this,"reg")])};function create_result(a,b,c){if(b){if(!c)for(let b=0;b<a.length;b++)a[b]=a[b].id;return a}else{const b=[];for(let d,e=0;e<a.length;e++)d=a[e],b[d.res]||(b[d.res]=[]),b[d.res].push(c?d:d.id);return b}}MongoDB.prototype.get=async function(a,b,c=0,d=0,e=!0,f=!1,g){let h,i=b?{ctx:b,key:a}:{key:a};if(!f&&!g)h=await this.db.collection((b?"ctx":"map")+this.field).find(i,{projection:{_id:0,res:1,id:1},limit:c,skip:d}).toArray();else{const a={_id:0,id:1},j=[{$match:i}];if(e||(a.res=1),f&&(a.doc="$doc.doc",j.push({$lookup:{from:"reg",localField:"id",foreignField:"id",as:"doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}})),g){const b={};for(let c=0,d=1;c<g.length;c+=2)a["tag"+d]="$tag"+d+".tag",b["tag"+d]=g[c+1],j.push({$lookup:{from:"tag-"+sanitize(g[c]),localField:"id",foreignField:"id",as:"tag"+d}}),d++;j.push({$project:a},{$match:b},{$project:{id:1,doc:1}})}else j.push({$project:a});j.push({$sort:{res:1}},{$skip:d},{$limit:c}),h=[];for(const a=await this.db.collection((b?"ctx":"map")+this.field).aggregate(j);;){const b=await a.next();if(b)h.push(b);else break}}return create_result(h,e,f)},MongoDB.prototype.tag=async function(a,b=0,c=0,d=!1){if(!d){const d=await this.db.collection("tag"+this.field).find({tag:a},{projection:{_id:0,id:1},limit:b,skip:c}).toArray();return create_result(d,!0,!1)}else{const d=[{$match:{tag:a}},{$skip:c},{$limit:b},{$lookup:{from:"reg",localField:"id",foreignField:"id",as:"doc"}},{$project:{_id:0,id:1,doc:"$doc.doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}}];let e=[];for(const a=await this.db.collection("tag"+this.field).aggregate(d);;){const b=await a.next();if(b)e.push(b);else break}return e}},MongoDB.prototype.enrich=function(a){return"object"!=typeof a&&(a=[a]),this.db.collection("reg").find({id:{$in:a}},{projection:{_id:0,id:1,doc:1}}).toArray()},MongoDB.prototype.has=function(a){return this.db.collection("reg").countDocuments({id:a},{limit:1}).then(function(a){return!!a})},MongoDB.prototype.search=async function(a,b,c=100,d=0,e=!1,f=!0,g=!1,h){let i,j=[];if(1<b.length&&a.depth){let j,k=[],l=b[0];for(let c=1;c<b.length;c++){j=b[c];const d=a.bidirectional&&j>l;k.push({ctx:d?j:l,key:d?l:j}),l=j}const m={_id:1};f||(m.res=1),g&&(m.doc=1);const n=[{$match:{$or:k}},{$group:{_id:"$id",count:{$sum:1},res:e?{$sum:"$res"}:{$sum:"$res"}}}];if(e||n.push({$match:{count:b.length-1}}),g&&(m.doc="$doc.doc",n.push({$lookup:{from:"reg",localField:"_id",foreignField:"id",as:"doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}})),h){const a={};for(let b=0,c=1;b<h.length;b+=2)m["tag"+c]="$tag"+c+".tag",a["tag"+c]=h[b+1],n.push({$lookup:{from:"tag-"+sanitize(h[b]),localField:"_id",foreignField:"id",as:"tag"+c}}),c++;n.push({$match:a})}else;n.push({$sort:e?{count:-1,res:1}:{res:1}},{$skip:d},{$limit:c}),n.push({$project:m}),i=await this.db.collection("ctx"+this.field).aggregate(n)}else{const a={_id:1};f||(a.res=1),g&&(a.doc=1);const j=[{$match:{key:{$in:b}}},{$group:{_id:"$id",count:{$sum:1},res:e?{$sum:"$res"}:{$sum:"$res"}}}];if(e||j.push({$match:{count:b.length}}),g&&(a.doc="$doc.doc",j.push({$lookup:{from:"reg",localField:"_id",foreignField:"id",as:"doc"}},{$unwind:{path:"$doc",preserveNullAndEmptyArrays:!0}})),h){const b={};for(let c=0,d=1;c<h.length;c+=2)a["tag"+d]="$tag"+d+".tag",b["tag"+d]=h[c+1],j.push({$lookup:{from:"tag-"+sanitize(h[c]),localField:"_id",foreignField:"id",as:"tag"+d}}),d++;j.push({$match:b})}else;j.push({$sort:e?{count:-1,res:1}:{res:1}},{$skip:d},{$limit:c}),j.push({$project:a}),i=await this.db.collection("map"+this.field).aggregate(j)}for(;;){const a=await i.next();if(a)f&&!g?j.push(a._id):(a.id=a._id,delete a._id,j.push(a));else break}return f&&!g?j:create_result(j,f,g)},MongoDB.prototype.info=function(){},MongoDB.prototype.transaction=function(a){return a.call(this)},MongoDB.prototype.commit=async function(a,b,c){if(b)await this.clear(),a.commit_task=[];else{let d=a.commit_task;a.commit_task=[];for(let a,c=0;c<d.length;c++)if(a=d[c],a.clear){await this.clear(),b=!0;break}else d[c]=a.del;b||(!c&&(d=d.concat(toArray(a.reg))),d.length&&(await this.remove(d)))}if(a.reg.size){const b=[];if(a.map.size){let c=[];for(const b of a.map){const a=b[0],d=b[1];for(let b,e=0;e<d.length;e++)if((b=d[e])&&b.length){this.type||(this.type=typeof b[0]);for(let d=0;d<b.length;d++)c.push({key:a,res:e,id:b[d]})}}c.length&&b.push(this.db.collection("map"+this.field).insertMany(c))}if(a.ctx.size){let c=[];for(const b of a.ctx){const a=b[0],d=b[1];for(const b of d){const d=b[0],e=b[1];for(let b,f=0;f<e.length;f++)if((b=e[f])&&b.length)for(let e=0;e<b.length;e++)c.push({ctx:a,key:d,res:f,id:b[e]})}}c.length&&b.push(this.db.collection("ctx"+this.field).insertMany(c))}if(a.tag){let c=[];for(const b of a.tag){const a=b[0],d=b[1];if(d.length)for(let b=0;b<d.length;b++)c.push({tag:a,id:d[b]})}c.length&&b.push(this.db.collection("tag"+this.field).insertMany(c))}let c=[];if(a.store)for(const b of a.store.entries()){const a=b[0],d=b[1];c.push({id:a,doc:d})}else if(!a.bypass)for(const b of a.reg.keys())c.push({id:b});c.length&&b.push(this.db.collection("reg").insertMany(c)),b.length&&(await Promise.all(b)),a.map.clear(),a.ctx.clear(),a.tag&&a.tag.clear(),a.store&&a.store.clear(),a.document||a.reg.clear()}},MongoDB.prototype.remove=function(a){if(a||0===a)return"object"!=typeof a&&(a=[a]),Promise.all([this.db.collection("map"+this.field).deleteMany({id:{$in:a}}),this.db.collection("ctx"+this.field).deleteMany({id:{$in:a}}),this.db.collection("tag"+this.field).deleteMany({id:{$in:a}}),this.db.collection("reg").deleteMany({id:{$in:a}})])};
\ No newline at end of file
diff --git a/dist/module-min/db/postgres/db.js b/dist/module-min/db/postgres/index.js
similarity index 100%
rename from dist/module-min/db/postgres/db.js
rename to dist/module-min/db/postgres/index.js
diff --git a/dist/module-min/db/redis/db.js b/dist/module-min/db/redis/index.js
similarity index 100%
rename from dist/module-min/db/redis/db.js
rename to dist/module-min/db/redis/index.js
diff --git a/dist/module-min/db/sqlite/db.js b/dist/module-min/db/sqlite/index.js
similarity index 81%
rename from dist/module-min/db/sqlite/db.js
rename to dist/module-min/db/sqlite/index.js
index c06f294..eac79eb 100644
--- a/dist/module-min/db/sqlite/db.js
+++ b/dist/module-min/db/sqlite/index.js
@@ -1,4 +1,4 @@
-import sqlite3 from"sqlite3";import path from"path";import StorageInterface from"../interface.js";import{concat,toArray}from"../../common.js";const VERSION=1,MAXIMUM_QUERY_VARS=16000,fields=["map","ctx","reg","tag","cfg"],types={text:"text",char:"text",varchar:"text",string:"text",number:"int",numeric:"int",integer:"int",smallint:"int",tinyint:"int",mediumint:"int",int:"int",int8:"int",uint8:"int",int16:"int",uint16:"int",int32:"int",uint32:"bigint",int64:"bigint",bigint:"bigint"};function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_]/g,"")}const TRX=Object.create(null),DB=Object.create(null);export default function SqliteDB(a,b={}){if(!this)return new SqliteDB(a,b);if("object"==typeof a&&(b=a,a=a.name),a||console.info("Default storage space was used, because a name was not passed."),this.id=b.path||(":memory:"===a?a:"flexsearch"+(a?"-"+sanitize(a):"")+".sqlite"),this.field=b.field?"_"+sanitize(b.field):"",this.support_tag_search=!0,this.db=b.db||DB[this.id]||null,this.type=b.type?types[b.type.toLowerCase()]:"string",!this.type)throw new Error("Unknown type of ID '"+b.type+"'")}SqliteDB.prototype.mount=function(a){return a.encoder?(a.db=this,this.open()):a.mount(this)},SqliteDB.prototype.open=async function(){if(!this.db&&!(this.db=DB[this.id])){let a=this.id;if(":memory:"!==a&&"/"!==a[0]&&"\\"!==a[0]){const b=process.cwd();a=path.join(b,this.id)}this.db=DB[this.id]=new sqlite3.Database(a)}const a=this.db;for(let b=0;b<fields.length;b++){const c=await this.promisfy({method:"get",stmt:"SELECT EXISTS(SELECT 1 FROM sqlite_master WHERE type = 'table' AND name = ?) as exist",params:[fields[b]+("reg"===fields[b]?"":this.field)]});if(!c||!c.exist){let c,d;switch(fields[b]){case"map":c=`
+import sqlite3 from"sqlite3";import path from"path";import StorageInterface from"../interface.js";import{concat,toArray}from"../../common.js";const VERSION=1,MAXIMUM_QUERY_VARS=16000,fields=["map","ctx","reg","tag","cfg"],types={text:"text",char:"text",varchar:"text",string:"text",number:"int",numeric:"int",integer:"int",smallint:"int",tinyint:"int",mediumint:"int",int:"int",int8:"int",uint8:"int",int16:"int",uint16:"int",int32:"int",uint32:"bigint",int64:"bigint",bigint:"bigint"};function sanitize(a){return a.toLowerCase().replace(/[^a-z0-9_]/g,"")}const TRX=Object.create(null),Index=Object.create(null);export default function SqliteDB(a,b={}){if(!this)return new SqliteDB(a,b);if("object"==typeof a&&(b=a,a=a.name),a||console.info("Default storage space was used, because a name was not passed."),this.id=b.path||(":memory:"===a?a:"flexsearch"+(a?"-"+sanitize(a):"")+".sqlite"),this.field=b.field?"_"+sanitize(b.field):"",this.support_tag_search=!0,this.db=b.db||Index[this.id]||null,this.type=b.type?types[b.type.toLowerCase()]:"string",!this.type)throw new Error("Unknown type of ID '"+b.type+"'")}SqliteDB.prototype.mount=function(a){return a.encoder?(a.db=this,this.open()):a.mount(this)},SqliteDB.prototype.open=async function(){if(!this.db&&!(this.db=Index[this.id])){let a=this.id;if(":memory:"!==a&&"/"!==a[0]&&"\\"!==a[0]){const b=process.cwd();a=path.join(b,this.id)}this.db=Index[this.id]=new sqlite3.Database(a)}const a=this.db;for(let b=0;b<fields.length;b++){const c=await this.promisfy({method:"get",stmt:"SELECT EXISTS(SELECT 1 FROM sqlite_master WHERE type = 'table' AND name = ?) as exist",params:[fields[b]+("reg"===fields[b]?"":this.field)]});if(!c||!c.exist){let c,d;switch(fields[b]){case"map":c=`
                         CREATE TABLE IF NOT EXISTS main.map${this.field}(
                             key TEXT NOT NULL,
                             res INTEGER NOT NULL,
@@ -46,7 +46,7 @@ import sqlite3 from"sqlite3";import path from"path";import StorageInterface from
                         CREATE TABLE IF NOT EXISTS main.cfg${this.field} (
                             cfg TEXT NOT NULL
                         );
-                    `;}await new Promise(function(b,e){a.exec(c,function(c,f){return c?e(c):void(d?a.exec(d,function(a,c){return a?e(a):void b(c)}):b(f))})})}}return a.exec("PRAGMA optimize = 0x10002"),a},SqliteDB.prototype.close=function(){return this.db&&this.db.close(),this.db=null,DB[this.id]=null,TRX[this.id]=null,this},SqliteDB.prototype.destroy=function(){return this.transaction(function(){this.db.run("DROP TABLE IF EXISTS main.map"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.ctx"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.tag"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.cfg"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.reg;")})},SqliteDB.prototype.clear=function(){return this.transaction(function(){this.db.run("DELETE FROM main.map"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.ctx"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.tag"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.cfg"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.reg WHERE 1;")})};function create_result(a,b,c){if(b){for(let b=0;b<a.length;b++)c?a[b].doc&&(a[b].doc=JSON.parse(a[b].doc)):a[b]=a[b].id;return a}else{const b=[];for(let d,e=0;e<a.length;e++)d=a[e],b[d.res]||(b[d.res]=[]),b[d.res].push(c?d:d.id);return b}}SqliteDB.prototype.get=function(a,b,c=0,d=0,e=!0,f=!1,g){let h,j="",k=b?[b,a]:[a],l="main."+(b?"ctx":"map")+this.field;if(g)for(let a=0;a<g.length;a+=2)j+=` AND ${l}.id IN (SELECT id FROM main.tag_${sanitize(g[a])} WHERE tag = ?)`,k.push(g[a+1]);return h=b?this.promisfy({method:"all",stmt:`
+                    `;}await new Promise(function(b,e){a.exec(c,function(c,f){return c?e(c):void(d?a.exec(d,function(a,c){return a?e(a):void b(c)}):b(f))})})}}return a.exec("PRAGMA optimize = 0x10002"),a},SqliteDB.prototype.close=function(){return this.db&&this.db.close(),this.db=null,Index[this.id]=null,TRX[this.id]=null,this},SqliteDB.prototype.destroy=function(){return this.transaction(function(){this.db.run("DROP TABLE IF EXISTS main.map"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.ctx"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.tag"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.cfg"+this.field+";"),this.db.run("DROP TABLE IF EXISTS main.reg;")})},SqliteDB.prototype.clear=function(){return this.transaction(function(){this.db.run("DELETE FROM main.map"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.ctx"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.tag"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.cfg"+this.field+" WHERE 1;"),this.db.run("DELETE FROM main.reg WHERE 1;")})};function create_result(a,b,c){if(b){for(let b=0;b<a.length;b++)c?a[b].doc&&(a[b].doc=JSON.parse(a[b].doc)):a[b]=a[b].id;return a}else{const b=[];for(let d,e=0;e<a.length;e++)d=a[e],b[d.res]||(b[d.res]=[]),b[d.res].push(c?d:d.id);return b}}SqliteDB.prototype.get=function(a,b,c=0,d=0,e=!0,f=!1,g){let h,j="",k=b?[b,a]:[a],l="main."+(b?"ctx":"map")+this.field;if(g)for(let a=0;a<g.length;a+=2)j+=` AND ${l}.id IN (SELECT id FROM main.tag_${sanitize(g[a])} WHERE tag = ?)`,k.push(g[a+1]);return h=b?this.promisfy({method:"all",stmt:`
                 SELECT ${l}.id 
                        ${e?"":", res"}
                        ${f?", doc":""}
diff --git a/dist/module-min/document.js b/dist/module-min/document.js
index e59f613..993c3d0 100644
--- a/dist/module-min/document.js
+++ b/dist/module-min/document.js
@@ -1 +1 @@
-import{IndexOptions,DocumentOptions,DocumentDescriptor,FieldOptions,StoreOptions}from"./type.js";import StorageInterface from"./db/interface.js";import Index from"./index.js";import WorkerIndex from"./worker.js";import Cache,{searchCache}from"./cache.js";import{is_string,is_object,parse_simple}from"./common.js";import apply_async from"./async.js";import{exportDocument,importDocument}from"./serialize.js";import{KeystoreMap,KeystoreSet}from"./keystore.js";import"./document/add.js";import"./document/search.js";export default function Document(a){if(!this||this.constructor!==Document)return new Document(a);const b=a.document||a.doc||a;let c,d;if(this.tree=[],this.field=[],this.marker=[],this.key=(c=b.key||b.id)&&parse_tree(c,this.marker)||"id",d=a.keystore||0,d&&(this.keystore=d),this.fastupdate=!!a.fastupdate,this.reg=!this.fastupdate||a.worker||a.db?d&&!0?new KeystoreSet(d):new Set:d&&!0?new KeystoreMap(d):new Map,this.storetree=(c=b.store||null)&&c&&!0!==c&&[],this.store=c&&(d&&!0?new KeystoreMap(d):new Map),this.cache=(c=a.cache||null)&&new Cache(c),a.cache=!1,this.worker=a.worker,this.priority=a.priority||4,this.index=parse_descriptor.call(this,a,b),(this.tag=null,(c=b.tag)&&("string"==typeof c&&(c=[c]),c.length))){this.tag=new Map,this.tagtree=[],this.tagfield=[];for(let a,b,d=0;d<c.length;d++){if(a=c[d],b=a.field||a,!b)throw new Error("The tag field from the document descriptor is undefined.");a.custom?this.tagtree[d]=a.custom:(this.tagtree[d]=parse_tree(b,this.marker),a.filter&&("string"==typeof this.tagtree[d]&&(this.tagtree[d]=new String(this.tagtree[d])),this.tagtree[d]._filter=a.filter)),this.tagfield[d]=b,this.tag.set(b,new Map)}}if(this.worker){this.fastupdate=!1;const a=[];for(const b of this.index.values())b.then&&a.push(b);if(a.length){const b=this;return Promise.all(a).then(function(a){let c=0;for(const d of b.index.entries()){const e=d[0],f=d[1];f.then&&b.index.set(e,a[c++])}return b})}}else a.db&&(this.fastupdate=!1,this.mount(a.db))}Document.prototype.mount=function(a){let b=this.field;if(this.tag)for(let a,c=0;c<this.tagfield.length;c++){a=this.tagfield[c];let d;this.index.set(a,d=new Index({},this.reg)),b===this.field&&(b=b.slice(0)),b.push(a),d.tag=this.tag.get(a)}const c=[],d={db:a.db,type:a.type,fastupdate:a.fastupdate};for(let e,f,g=0;g<b.length;g++){d.field=f=b[g],e=this.index.get(f);const h=new a.constructor(a.id,d);h.id=a.id,c[g]=h.mount(e),e.document=!0,g?e.bypass=!0:e.store=this.store}return this.db=!0,Promise.all(c)},Document.prototype.commit=async function(a,b){const c=[];for(const d of this.index.values())c.push(d.commit(a,b));await Promise.all(c),this.reg.clear()},Document.prototype.destroy=function(){const a=[];for(const b of this.index.values())a.push(b.destroy());return Promise.all(a)};function parse_descriptor(a,b){const c=new Map;let d=b.index||b.field||b;is_string(d)&&(d=[d]);for(let e,f,g=0;g<d.length;g++){if(e=d[g],is_string(e)||(f=e,e=e.field),f=is_object(f)?Object.assign({},a,f):a,this.worker){const a=new WorkerIndex(f);a?c.set(e,a):this.worker=!1}this.worker||c.set(e,new Index(f,this.reg)),f.custom?this.tree[g]=f.custom:(this.tree[g]=parse_tree(e,this.marker),f.filter&&("string"==typeof this.tree[g]&&(this.tree[g]=new String(this.tree[g])),this.tree[g]._filter=f.filter)),this.field[g]=e}if(this.storetree){let a=b.store;is_string(a)&&(a=[a]);for(let b,c,d=0;d<a.length;d++)b=a[d],c=b.field||b,b.custom?(this.storetree[d]=b.custom,b.custom._field=c):(this.storetree[d]=parse_tree(c,this.marker),b.filter&&("string"==typeof this.storetree[d]&&(this.storetree[d]=new String(this.storetree[d])),this.storetree[d]._filter=b.filter))}return c}function parse_tree(a,b){const c=a.split(":");let d=0;for(let e=0;e<c.length;e++)a=c[e],"]"===a[a.length-1]&&(a=a.substring(0,a.length-2),a&&(b[d]=!0)),a&&(c[d++]=a);return d<c.length&&(c.length=d),1<d?c:c[0]}Document.prototype.append=function(a,b){return this.add(a,b,!0)},Document.prototype.update=function(a,b){return this.remove(a).add(a,b)},Document.prototype.remove=function(a){is_object(a)&&(a=parse_simple(a,this.key));for(const b of this.index.values())b.remove(a,!0);if(this.reg.has(a)){if(this.tag&&!this.fastupdate)for(let b of this.tag.values())for(let c of b){const d=c[0],e=c[1],f=e.indexOf(a);-1<f&&(1<e.length?e.splice(f,1):b.delete(d))}this.store&&this.store.delete(a),this.reg.delete(a)}return this.cache&&this.cache.remove(a),this},Document.prototype.clear=function(){const a=[];for(const b of this.index.values()){const c=b.clear();c.then&&a.push(c)}if(this.tag)for(const a of this.tag.values())a.clear();return this.store&&this.store.clear(),this.cache&&this.cache.clear(),a.length?Promise.all(a):this},Document.prototype.contain=function(a){return this.db?this.index.get(this.field[0]).db.has(a):this.reg.has(a)},Document.prototype.cleanup=function(){for(const a of this.index.values())a.cleanup();return this},Document.prototype.get=function(a){return this.db?this.index.get(this.field[0]).db.enrich(a).then(function(a){return a[0]&&a[0].doc}):this.store.get(a)},Document.prototype.set=function(a,b){return this.store.set(a,b),this},Document.prototype.searchCache=searchCache,Document.prototype.export=exportDocument,Document.prototype.import=importDocument,apply_async(Document.prototype);
\ No newline at end of file
+import{IndexOptions,DocumentOptions,DocumentDescriptor,FieldOptions,StoreOptions}from"./type.js";import StorageInterface from"./db/interface.js";import Index from"./index.js";import WorkerIndex from"./worker.js";import Cache,{searchCache}from"./cache.js";import{is_string,is_object,parse_simple}from"./common.js";import apply_async from"./async.js";import{exportDocument,importDocument}from"./serialize.js";import{KeystoreMap,KeystoreSet}from"./keystore.js";import"./document/add.js";import"./document/search.js";export default function Document(a){if(!this||this.constructor!==Document)return new Document(a);const b=a.document||a.doc||a;let c,d;if(this.tree=[],this.field=[],this.marker=[],this.key=(c=b.key||b.id)&&parse_tree(c,this.marker)||"id",d=a.keystore||0,d&&(this.keystore=d),this.fastupdate=!!a.fastupdate,this.reg=!this.fastupdate||a.worker||a.db?d&&!0?new KeystoreSet(d):new Set:d&&!0?new KeystoreMap(d):new Map,this.storetree=(c=b.store||null)&&c&&!0!==c&&[],this.store=c&&(d&&!0?new KeystoreMap(d):new Map),this.cache=(c=a.cache||null)&&new Cache(c),a.cache=!1,this.worker=a.worker,this.priority=a.priority||4,this.index=parse_descriptor.call(this,a,b),(this.tag=null,(c=b.tag)&&("string"==typeof c&&(c=[c]),c.length))){this.tag=new Map,this.tagtree=[],this.tagfield=[];for(let a,b,d=0;d<c.length;d++){if(a=c[d],b=a.field||a,!b)throw new Error("The tag field from the document descriptor is undefined.");a.custom?this.tagtree[d]=a.custom:(this.tagtree[d]=parse_tree(b,this.marker),a.filter&&("string"==typeof this.tagtree[d]&&(this.tagtree[d]=new String(this.tagtree[d])),this.tagtree[d]._filter=a.filter)),this.tagfield[d]=b,this.tag.set(b,new Map)}}if(this.worker){this.fastupdate=!1;const a=[];for(const b of this.index.values())b.then&&a.push(b);if(a.length){const b=this;return Promise.all(a).then(function(a){let c=0;for(const d of b.index.entries()){const e=d[0],f=d[1];f.then&&b.index.set(e,a[c++])}return b})}}else a.db&&(this.fastupdate=!1,this.mount(a.db))}Document.prototype.mount=function(a){let b=this.field;if(this.tag)for(let a,c=0;c<this.tagfield.length;c++){a=this.tagfield[c];let d;this.index.set(a,d=new Index({},this.reg)),b===this.field&&(b=b.slice(0)),b.push(a),d.tag=this.tag.get(a)}const c=[],d={db:a.db,type:a.type,fastupdate:a.fastupdate};for(let e,f,g=0;g<b.length;g++){d.field=f=b[g],e=this.index.get(f);const h=new a.constructor(a.id,d);h.id=a.id,c[g]=h.mount(e),e.document=!0,g?e.bypass=!0:e.store=this.store}return this.db=!0,Promise.all(c)},Document.prototype.commit=async function(a,b){const c=[];for(const d of this.index.values())c.push(d.commit(a,b));await Promise.all(c),this.reg.clear()},Document.prototype.destroy=function(){const a=[];for(const b of this.index.values())a.push(b.destroy());return Promise.all(a)};function parse_descriptor(a,b){const c=new Map;let d=b.index||b.field||b;is_string(d)&&(d=[d]);for(let e,f,g=0;g<d.length;g++){if(e=d[g],is_string(e)||(f=e,e=e.field),f=is_object(f)?Object.assign({},a,f):a,this.worker){const a=new WorkerIndex(f);a?c.set(e,a):this.worker=!1}this.worker||c.set(e,new Index(f,this.reg)),f.custom?this.tree[g]=f.custom:(this.tree[g]=parse_tree(e,this.marker),f.filter&&("string"==typeof this.tree[g]&&(this.tree[g]=new String(this.tree[g])),this.tree[g]._filter=f.filter)),this.field[g]=e}if(this.storetree){let a=b.store;is_string(a)&&(a=[a]);for(let b,c,d=0;d<a.length;d++)b=a[d],c=b.field||b,b.custom?(this.storetree[d]=b.custom,b.custom._field=c):(this.storetree[d]=parse_tree(c,this.marker),b.filter&&("string"==typeof this.storetree[d]&&(this.storetree[d]=new String(this.storetree[d])),this.storetree[d]._filter=b.filter))}return c}function parse_tree(a,b){const c=a.split(":");let d=0;for(let e=0;e<c.length;e++)a=c[e],"]"===a[a.length-1]&&(a=a.substring(0,a.length-2),a&&(b[d]=!0)),a&&(c[d++]=a);return d<c.length&&(c.length=d),1<d?c:c[0]}Document.prototype.append=function(a,b){return this.add(a,b,!0)},Document.prototype.update=function(a,b){return this.remove(a).add(a,b)},Document.prototype.remove=function(a){is_object(a)&&(a=parse_simple(a,this.key));for(const b of this.index.values())b.remove(a,!0);if(this.reg.has(a)){if(this.tag&&!this.fastupdate)for(let b of this.tag.values())for(let c of b){const d=c[0],e=c[1],f=e.indexOf(a);-1<f&&(1<e.length?e.splice(f,1):b.delete(d))}this.store&&this.store.delete(a),this.reg.delete(a)}return this.cache&&this.cache.remove(a),this},Document.prototype.clear=function(){const a=[];for(const b of this.index.values()){const c=b.clear();c.then&&a.push(c)}if(this.tag)for(const a of this.tag.values())a.clear();return this.store&&this.store.clear(),this.cache&&this.cache.clear(),a.length?Promise.all(a):this},Document.prototype.contain=function(a){return this.db?this.index.get(this.field[0]).db.has(a):this.reg.has(a)},Document.prototype.cleanup=function(){for(const a of this.index.values())a.cleanup();return this},Document.prototype.get=function(a){return this.db?this.index.get(this.field[0]).db.enrich(a).then(function(a){return a[0]&&a[0].doc||null}):this.store.get(a)||null},Document.prototype.set=function(a,b){return"object"==typeof a&&(b=a,a=parse_simple(b,this.key)),this.store.set(a,b),this},Document.prototype.searchCache=searchCache,Document.prototype.export=exportDocument,Document.prototype.import=importDocument,apply_async(Document.prototype);
\ No newline at end of file
diff --git a/dist/module-min/encoder.js b/dist/module-min/encoder.js
index 4861ece..8a92d11 100644
--- a/dist/module-min/encoder.js
+++ b/dist/module-min/encoder.js
@@ -1 +1 @@
-import{merge_option}from"./common.js";import normalize_polyfill from"./charset/normalize.js";import{EncoderOptions}from"./type.js";const whitespace=/[^\p{L}\p{N}]+/u,numeric_split_length=/(\d{3})/g,numeric_split_prev_char=/(\D)(\d{3})/g,numeric_split_next_char=/(\d{3})(\D)/g,normalize=/[\u0300-\u036f]/g;export default function Encoder(a={}){if(!this||this.constructor!==Encoder)return new Encoder(...arguments);if(arguments.length)for(let a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}Encoder.prototype.assign=function(a){this.normalize=merge_option(a.normalize,!0,this.normalize);let b,c=a.include,d=c||a.exclude||a.split;if(d||""===d){if("object"==typeof d&&d.constructor!==RegExp){let a="";b=!c,c||(a+="\\p{Z}"),d.letter&&(a+="\\p{L}"),d.number&&(a+="\\p{N}",b=!!c),d.symbol&&(a+="\\p{S}"),d.punctuation&&(a+="\\p{P}"),d.control&&(a+="\\p{C}"),(d=d.char)&&(a+="object"==typeof d?d.join(""):d);try{this.split=new RegExp("["+(c?"^":"")+a+"]+","u")}catch(a){!1,this.split=/\s+/}}else this.split=d,b=!1===d||2>"a1a".split(d).length;this.numeric=merge_option(a.numeric,b)}else{try{this.split=merge_option(this.split,whitespace)}catch(a){!1,this.split=/\s+/}this.numeric=merge_option(a.numeric,merge_option(this.numeric,!0))}if(this.prepare=merge_option(a.prepare,null,this.prepare),this.finalize=merge_option(a.finalize,null,this.finalize),d=a.filter,this.filter="function"==typeof d?d:merge_option(d&&new Set(d),null,this.filter),this.dedupe=merge_option(a.dedupe,!1,this.dedupe),this.matcher=merge_option((d=a.matcher)&&new Map(d),null,this.matcher),this.mapper=merge_option((d=a.mapper)&&new Map(d),null,this.mapper),this.stemmer=merge_option((d=a.stemmer)&&new Map(d),null,this.stemmer),this.replacer=merge_option(a.replacer,null,this.replacer),this.minlength=merge_option(a.minlength,1,this.minlength),this.maxlength=merge_option(a.maxlength,0,this.maxlength),this.rtl=merge_option(a.rtl,!1,this.rtl),this.cache=d=merge_option(a.cache,!0,this.cache),d&&(this.timer=null,this.cache_size="number"==typeof d?d:2e5,this.cache_enc=new Map,this.cache_term=new Map,this.cache_enc_length=128,this.cache_term_length=128),this.matcher_str="",this.matcher_test=null,this.stemmer_str="",this.stemmer_test=null,this.matcher)for(const a of this.matcher.keys())this.matcher_str+=(this.matcher_str?"|":"")+a;if(this.stemmer)for(const a of this.stemmer.keys())this.stemmer_str+=(this.stemmer_str?"|":"")+a;return this},Encoder.prototype.addStemmer=function(a,b){return this.stemmer||(this.stemmer=new Map),this.stemmer.set(a,b),this.stemmer_str+=(this.stemmer_str?"|":"")+a,this.stemmer_test=null,this.cache&&clear(this),this},Encoder.prototype.addFilter=function(a){return"function"==typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a)),this.cache&&clear(this),this},Encoder.prototype.addMapper=function(a,b){return"object"==typeof a?this.addReplacer(a,b):1<a.length?this.addMatcher(a,b):(this.mapper||(this.mapper=new Map),this.mapper.set(a,b),this.cache&&clear(this),this)},Encoder.prototype.addMatcher=function(a,b){return"object"==typeof a?this.addReplacer(a,b):2>a.length&&(this.dedupe||this.mapper)?this.addMapper(a,b):(this.matcher||(this.matcher=new Map),this.matcher.set(a,b),this.matcher_str+=(this.matcher_str?"|":"")+a,this.matcher_test=null,this.cache&&clear(this),this)},Encoder.prototype.addReplacer=function(a,b){return"string"==typeof a?this.addMatcher(a,b):(this.replacer||(this.replacer=[]),this.replacer.push(a,b),this.cache&&clear(this),this)},Encoder.prototype.encode=function(a){if(this.cache&&a.length<=this.cache_enc_length)if(!this.timer)this.timer=setTimeout(clear,50,this);else if(this.cache_enc.has(a))return this.cache_enc.get(a);this.normalize&&("function"==typeof this.normalize?a=this.normalize(a):normalize?a=a.normalize("NFKD").replace(normalize,"").toLowerCase():a=a.toLowerCase()),this.prepare&&(a=this.prepare(a)),this.numeric&&3<a.length&&(a=a.replace(numeric_split_prev_char,"$1 $2").replace(numeric_split_next_char,"$1 $2").replace(numeric_split_length,"$1 "));const b=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let c=[],d=this.split||""===this.split?a.split(this.split):a;for(let e,f,g=0;g<d.length;g++)if((e=f=d[g])&&!(e.length<this.minlength)){if(b){c.push(e);continue}if(!(this.filter&&("function"==typeof this.filter?!this.filter(e):this.filter.has(e)))){if(this.cache&&e.length<=this.cache_term_length)if(this.timer){const a=this.cache_term.get(e);if(a||""===a){a&&c.push(a);continue}}else this.timer=setTimeout(clear,50,this);if(this.stemmer&&2<e.length){this.stemmer_test||(this.stemmer_test=new RegExp("(?!^)("+this.stemmer_str+")$"));const a=e;e=e.replace(this.stemmer_test,a=>this.stemmer.get(a)),a!==e&&this.filter&&e.length>=this.minlength&&("function"==typeof this.filter?!this.filter(e):this.filter.has(e))&&(e="")}if(e&&(this.mapper||this.dedupe&&1<e.length)){let a="";for(let b,c,d=0,f="";d<e.length;d++)b=e.charAt(d),b===f&&this.dedupe||(c=this.mapper&&this.mapper.get(b),c||""===c?(c!==f||!this.dedupe)&&(f=c)&&(a+=c):a+=f=b);e=a}if(this.matcher&&1<e.length&&(this.matcher_test||(this.matcher_test=new RegExp("("+this.matcher_str+")","g")),e=e.replace(this.matcher_test,a=>this.matcher.get(a))),e&&this.replacer)for(let a=0;e&&a<this.replacer.length;a+=2)e=e.replace(this.replacer[a],this.replacer[a+1]);this.cache&&f.length<=this.cache_term_length&&(this.cache_term.set(f,e),this.cache_term.size>this.cache_size&&(this.cache_term.clear(),this.cache_term_length=0|this.cache_term_length/1.1)),e&&c.push(e)}}return this.finalize&&(c=this.finalize(c)||c),this.cache&&a.length<=this.cache_enc_length&&(this.cache_enc.set(a,c),this.cache_enc.size>this.cache_size&&(this.cache_enc.clear(),this.cache_enc_length=0|this.cache_enc_length/1.1)),c};function clear(a){a.timer=null,a.cache_enc.clear(),a.cache_term.clear()}
\ No newline at end of file
+import{merge_option}from"./common.js";import normalize_polyfill from"./charset/polyfill.js";import{EncoderOptions}from"./type.js";const whitespace=/[^\p{L}\p{N}]+/u,numeric_split_length=/(\d{3})/g,numeric_split_prev_char=/(\D)(\d{3})/g,numeric_split_next_char=/(\d{3})(\D)/g,normalize=/[\u0300-\u036f]/g;export default function Encoder(a={}){if(!this||this.constructor!==Encoder)return new Encoder(...arguments);if(arguments.length)for(let a=0;a<arguments.length;a++)this.assign(arguments[a]);else this.assign(a)}Encoder.prototype.assign=function(a){this.normalize=merge_option(a.normalize,!0,this.normalize);let b,c=a.include,d=c||a.exclude||a.split;if(d||""===d){if("object"==typeof d&&d.constructor!==RegExp){let a="";b=!c,c||(a+="\\p{Z}"),d.letter&&(a+="\\p{L}"),d.number&&(a+="\\p{N}",b=!!c),d.symbol&&(a+="\\p{S}"),d.punctuation&&(a+="\\p{P}"),d.control&&(a+="\\p{C}"),(d=d.char)&&(a+="object"==typeof d?d.join(""):d);try{this.split=new RegExp("["+(c?"^":"")+a+"]+","u")}catch(a){!1,this.split=/\s+/}}else this.split=d,b=!1===d||2>"a1a".split(d).length;this.numeric=merge_option(a.numeric,b)}else{try{this.split=merge_option(this.split,whitespace)}catch(a){!1,this.split=/\s+/}this.numeric=merge_option(a.numeric,merge_option(this.numeric,!0))}if(this.prepare=merge_option(a.prepare,null,this.prepare),this.finalize=merge_option(a.finalize,null,this.finalize),d=a.filter,this.filter="function"==typeof d?d:merge_option(d&&new Set(d),null,this.filter),this.dedupe=merge_option(a.dedupe,!1,this.dedupe),this.matcher=merge_option((d=a.matcher)&&new Map(d),null,this.matcher),this.mapper=merge_option((d=a.mapper)&&new Map(d),null,this.mapper),this.stemmer=merge_option((d=a.stemmer)&&new Map(d),null,this.stemmer),this.replacer=merge_option(a.replacer,null,this.replacer),this.minlength=merge_option(a.minlength,1,this.minlength),this.maxlength=merge_option(a.maxlength,0,this.maxlength),this.rtl=merge_option(a.rtl,!1,this.rtl),this.cache=d=merge_option(a.cache,!0,this.cache),d&&(this.timer=null,this.cache_size="number"==typeof d?d:2e5,this.cache_enc=new Map,this.cache_term=new Map,this.cache_enc_length=128,this.cache_term_length=128),this.matcher_str="",this.matcher_test=null,this.stemmer_str="",this.stemmer_test=null,this.matcher)for(const a of this.matcher.keys())this.matcher_str+=(this.matcher_str?"|":"")+a;if(this.stemmer)for(const a of this.stemmer.keys())this.stemmer_str+=(this.stemmer_str?"|":"")+a;return this},Encoder.prototype.addStemmer=function(a,b){return this.stemmer||(this.stemmer=new Map),this.stemmer.set(a,b),this.stemmer_str+=(this.stemmer_str?"|":"")+a,this.stemmer_test=null,this.cache&&clear(this),this},Encoder.prototype.addFilter=function(a){return"function"==typeof a?this.filter=a:(this.filter||(this.filter=new Set),this.filter.add(a)),this.cache&&clear(this),this},Encoder.prototype.addMapper=function(a,b){return"object"==typeof a?this.addReplacer(a,b):1<a.length?this.addMatcher(a,b):(this.mapper||(this.mapper=new Map),this.mapper.set(a,b),this.cache&&clear(this),this)},Encoder.prototype.addMatcher=function(a,b){return"object"==typeof a?this.addReplacer(a,b):2>a.length&&(this.dedupe||this.mapper)?this.addMapper(a,b):(this.matcher||(this.matcher=new Map),this.matcher.set(a,b),this.matcher_str+=(this.matcher_str?"|":"")+a,this.matcher_test=null,this.cache&&clear(this),this)},Encoder.prototype.addReplacer=function(a,b){return"string"==typeof a?this.addMatcher(a,b):(this.replacer||(this.replacer=[]),this.replacer.push(a,b),this.cache&&clear(this),this)},Encoder.prototype.encode=function(a){if(this.cache&&a.length<=this.cache_enc_length)if(!this.timer)this.timer=setTimeout(clear,50,this);else if(this.cache_enc.has(a))return this.cache_enc.get(a);this.normalize&&("function"==typeof this.normalize?a=this.normalize(a):normalize?a=a.normalize("NFKD").replace(normalize,"").toLowerCase():a=a.toLowerCase()),this.prepare&&(a=this.prepare(a)),this.numeric&&3<a.length&&(a=a.replace(numeric_split_prev_char,"$1 $2").replace(numeric_split_next_char,"$1 $2").replace(numeric_split_length,"$1 "));const b=!(this.dedupe||this.mapper||this.filter||this.matcher||this.stemmer||this.replacer);let c=[],d=this.split||""===this.split?a.split(this.split):a;for(let e,f,g=0;g<d.length;g++)if((e=f=d[g])&&!(e.length<this.minlength)){if(b){c.push(e);continue}if(!(this.filter&&("function"==typeof this.filter?!this.filter(e):this.filter.has(e)))){if(this.cache&&e.length<=this.cache_term_length)if(this.timer){const a=this.cache_term.get(e);if(a||""===a){a&&c.push(a);continue}}else this.timer=setTimeout(clear,50,this);if(this.stemmer&&2<e.length){this.stemmer_test||(this.stemmer_test=new RegExp("(?!^)("+this.stemmer_str+")$"));const a=e;e=e.replace(this.stemmer_test,a=>this.stemmer.get(a)),a!==e&&this.filter&&e.length>=this.minlength&&("function"==typeof this.filter?!this.filter(e):this.filter.has(e))&&(e="")}if(e&&(this.mapper||this.dedupe&&1<e.length)){let a="";for(let b,c,d=0,f="";d<e.length;d++)b=e.charAt(d),b===f&&this.dedupe||(c=this.mapper&&this.mapper.get(b),c||""===c?(c!==f||!this.dedupe)&&(f=c)&&(a+=c):a+=f=b);e=a}if(this.matcher&&1<e.length&&(this.matcher_test||(this.matcher_test=new RegExp("("+this.matcher_str+")","g")),e=e.replace(this.matcher_test,a=>this.matcher.get(a))),e&&this.replacer)for(let a=0;e&&a<this.replacer.length;a+=2)e=e.replace(this.replacer[a],this.replacer[a+1]);this.cache&&f.length<=this.cache_term_length&&(this.cache_term.set(f,e),this.cache_term.size>this.cache_size&&(this.cache_term.clear(),this.cache_term_length=0|this.cache_term_length/1.1)),e&&c.push(e)}}return this.finalize&&(c=this.finalize(c)||c),this.cache&&a.length<=this.cache_enc_length&&(this.cache_enc.set(a,c),this.cache_enc.size>this.cache_size&&(this.cache_enc.clear(),this.cache_enc_length=0|this.cache_enc_length/1.1)),c};export function fallback_encoder(a){return a.normalize("NFKD").replace(normalize,"").toLowerCase().trim().split(/\s+/)}function clear(a){a.timer=null,a.cache_enc.clear(),a.cache_term.clear()}
\ No newline at end of file
diff --git a/dist/module-min/index.js b/dist/module-min/index.js
index cba1dee..d092445 100644
--- a/dist/module-min/index.js
+++ b/dist/module-min/index.js
@@ -1 +1 @@
-import{IndexOptions,ContextOptions,EncoderOptions}from"./type.js";import Encoder from"./encoder.js";import Cache,{searchCache}from"./cache.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreSet}from"./keystore.js";import{is_array,is_string}from"./common.js";import{exportIndex,importIndex,serialize}from"./serialize.js";import default_encoder from"./charset/latin/default.js";import apply_preset from"./preset.js";import apply_async from"./async.js";import tick from"./profiler.js";import"./index/add.js";import"./index/search.js";import"./index/remove.js";export default function Index(a,b){if(!this||this.constructor!==Index)return new Index(a);!1,a=a?apply_preset(a):{};let c=a.context;const d=!0===c?{depth:1}:c||{},e=is_string(a.encoder)?Charset[a.encoder]:a.encode||a.encoder||default_encoder;this.encoder=e.encode?e:"object"==typeof e?new Encoder(e):{encode:e},this.compress=a.compress||a.compression||!1,this.resolution=a.resolution||9,this.tokenize=c=(c=a.tokenize)&&"default"!==c&&"exact"!==c&&c||"strict",this.depth="strict"===c&&d.depth||0,this.bidirectional=!1!==d.bidirectional,this.fastupdate=!!a.fastupdate,this.score=a.score||null,!1,c=a.keystore||0,c&&(this.keystore=c),this.map=c&&!0?new KeystoreMap(c):new Map,this.ctx=c&&!0?new KeystoreMap(c):new Map,this.reg=b||(this.fastupdate?c&&!0?new KeystoreMap(c):new Map:c&&!0?new KeystoreSet(c):new Set),this.resolution_ctx=d.resolution||3,this.rtl=e.rtl||a.rtl||!1,this.cache=(c=a.cache||null)&&new Cache(c),this.resolve=!1!==a.resolve,(c=a.db)&&(this.db=this.mount(c)),this.commit_auto=!1!==a.commit,this.commit_task=[],this.commit_timer=null,this.priority=a.priority||4}Index.prototype.mount=function(a){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),a.mount(this)},Index.prototype.commit=function(a,b){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.commit(this,a,b)},Index.prototype.destroy=function(){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.destroy()};export function autoCommit(a,b,c){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null,a.db.commit(a,b,c)},1))}Index.prototype.clear=function(){return this.map.clear(),this.ctx.clear(),this.reg.clear(),this.cache&&this.cache.clear(),this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]),this},Index.prototype.append=function(a,b){return this.add(a,b,!0)},Index.prototype.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)},Index.prototype.update=function(a,b){const c=this,d=this.remove(a);return d&&d.then?d.then(()=>c.add(a,b)):this.add(a,b)};function cleanup_index(a){let b=0;if(is_array(a))for(let c,d=0;d<a.length;d++)(c=a[d])&&(b+=c.length);else for(const c of a.entries()){const d=c[0],e=c[1],f=cleanup_index(e);f?b+=f:a.delete(d)}return b}Index.prototype.cleanup=function(){return this.fastupdate?(cleanup_index(this.map),this.depth&&cleanup_index(this.ctx),this):(!1,this)},Index.prototype.searchCache=searchCache,Index.prototype.export=exportIndex,Index.prototype.import=importIndex,Index.prototype.serialize=serialize,apply_async(Index.prototype);
\ No newline at end of file
+import{IndexOptions,ContextOptions,EncoderOptions}from"./type.js";import Encoder,{fallback_encoder}from"./encoder.js";import Cache,{searchCache}from"./cache.js";import Charset from"./charset.js";import{KeystoreMap,KeystoreSet}from"./keystore.js";import{is_array,is_string}from"./common.js";import{exportIndex,importIndex,serialize}from"./serialize.js";import apply_preset from"./preset.js";import apply_async from"./async.js";import tick from"./profiler.js";import"./index/add.js";import"./index/search.js";import"./index/remove.js";export default function Index(a,b){if(!this||this.constructor!==Index)return new Index(a);!1,a=a?apply_preset(a):{};let c=a.context;const d=!0===c?{depth:1}:c||{},e=is_string(a.encoder)?Charset[a.encoder]:a.encode||a.encoder||{};this.encoder=e.encode?e:"object"==typeof e?new Encoder(e):{encode:e},this.compress=a.compress||a.compression||!1,this.resolution=a.resolution||9,this.tokenize=c=(c=a.tokenize)&&"default"!==c&&"exact"!==c&&c||"strict",this.depth="strict"===c&&d.depth||0,this.bidirectional=!1!==d.bidirectional,this.fastupdate=!!a.fastupdate,this.score=a.score||null,!1,c=a.keystore||0,c&&(this.keystore=c),this.map=c&&!0?new KeystoreMap(c):new Map,this.ctx=c&&!0?new KeystoreMap(c):new Map,this.reg=b||(this.fastupdate?c&&!0?new KeystoreMap(c):new Map:c&&!0?new KeystoreSet(c):new Set),this.resolution_ctx=d.resolution||3,this.rtl=e.rtl||a.rtl||!1,this.cache=(c=a.cache||null)&&new Cache(c),this.resolve=!1!==a.resolve,(c=a.db)&&(this.db=this.mount(c)),this.commit_auto=!1!==a.commit,this.commit_task=[],this.commit_timer=null,this.priority=a.priority||4}Index.prototype.mount=function(a){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),a.mount(this)},Index.prototype.commit=function(a,b){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.commit(this,a,b)},Index.prototype.destroy=function(){return this.commit_timer&&(clearTimeout(this.commit_timer),this.commit_timer=null),this.db.destroy()};export function autoCommit(a,b,c){a.commit_timer||(a.commit_timer=setTimeout(function(){a.commit_timer=null,a.db.commit(a,b,c)},1))}Index.prototype.clear=function(){return this.map.clear(),this.ctx.clear(),this.reg.clear(),this.cache&&this.cache.clear(),this.db&&(this.commit_timer&&clearTimeout(this.commit_timer),this.commit_timer=null,this.commit_task=[{clear:!0}]),this},Index.prototype.append=function(a,b){return this.add(a,b,!0)},Index.prototype.contain=function(a){return this.db?this.db.has(a):this.reg.has(a)},Index.prototype.update=function(a,b){const c=this,d=this.remove(a);return d&&d.then?d.then(()=>c.add(a,b)):this.add(a,b)};function cleanup_index(a){let b=0;if(is_array(a))for(let c,d=0;d<a.length;d++)(c=a[d])&&(b+=c.length);else for(const c of a.entries()){const d=c[0],e=c[1],f=cleanup_index(e);f?b+=f:a.delete(d)}return b}Index.prototype.cleanup=function(){return this.fastupdate?(cleanup_index(this.map),this.depth&&cleanup_index(this.ctx),this):(!1,this)},Index.prototype.searchCache=searchCache,Index.prototype.export=exportIndex,Index.prototype.import=importIndex,Index.prototype.serialize=serialize,apply_async(Index.prototype);
\ No newline at end of file
diff --git a/dist/module-min/index/search.js b/dist/module-min/index/search.js
index abe2aa0..9304865 100644
--- a/dist/module-min/index/search.js
+++ b/dist/module-min/index/search.js
@@ -1 +1 @@
-import{SearchOptions,SearchResults,EnrichedSearchResults,IntermediateSearchResults}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";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=!1!==c.resolve,k=g&&c.enrich,i=c.boost,j=c.resolution,h=this.db&&c.tag):g=this.resolve;let n=this.encoder.encode(a);if(d=n.length,b=b||(g?100:0),1===d)return single_term_query.call(this,n[0],"",b,m,g,k,h);if(e=this.depth&&!1!==e,2===d&&e&&!f)return single_term_query.call(this,n[0],n[1],b,m,g,k,h);let o,p=create_object(),q=0;if(1<d&&e&&(o=n[0],q=1),j||0===j||(j=o?this.resolution_ctx:this.resolution),this.db){if(this.db.search){const a=this.db.search(this,n,b,m,f,g,k,h);if(!1!==a)return a}const a=this;return async function(){for(let b,c;q<d;q++){if(c=n[q],c&&!p[c]){if(p[c]=1,b=await a.get_array(c,o,0,0,!1,!1),b=add_result(b,l,f,j),b){l=b;break}!o||f&&b&&l.length||(o=c)}f&&o&&q==d-1&&!l.length&&(j=a.resolution,o="",q=-1,p=create_object())}return return_result(l,j,b,m,f,i,g)}()}for(let e,g;q<d;q++){if(g=n[q],g&&!p[g]){if(p[g]=1,e=this.get_array(g,o,0,0,!1,!1),e=add_result(e,l,f,j),e){l=e;break}!o||f&&e&&l.length||(o=g)}f&&o&&q==d-1&&!l.length&&(j=this.resolution,o="",q=-1,p=create_object())}return return_result(l,j,b,m,f,i,g)};function return_result(a,b,c,d,e,f,g){let h=a.length,i=a;if(1<h)i=intersect(a,b,c,d,e,f,g);else if(1===h)return g?resolve_default.call(null,a[0],c,d):new Resolver(a[0]);return g?i:new Resolver(i)}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||[]:new Resolver(a)}):h&&h.length?e?resolve_default.call(this,h,c,d):new Resolver(h):e?[]:new Resolver}function add_result(a,b,c,d){let e=[];if(a&&a.length){if(a.length<=d)return void b.push(a);for(let b,c=0;c<d;c++)(b=a[c])&&(e[c]=b);if(e.length)return void b.push(e)}return c?void 0:e}Index.prototype.get_array=function(a,b,c,d,e,f,g){let h,i;return(b&&(i=this.bidirectional&&a>b,i&&(i=b,b=a,a=i)),this.compress&&(a=default_compress(a),b&&(b=default_compress(b))),this.db)?this.db.get(a,b,c,d,e,f,g):(b?(h=this.ctx.get(b),h=h&&h.get(a)):h=this.map.get(a),h)};
\ No newline at end of file
+import{SearchOptions,SearchResults,EnrichedSearchResults,IntermediateSearchResults}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";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=!1!==c.resolve,k=g&&c.enrich,i=c.boost,j=c.resolution,h=this.db&&c.tag):g=this.resolve;let n=this.encoder.encode(a);if(d=n.length,b=b||(g?100:0),1===d)return single_term_query.call(this,n[0],"",b,m,g,k,h);if(e=this.depth&&!1!==e,2===d&&e&&!f)return single_term_query.call(this,n[1],n[0],b,m,g,k,h);let o,p=create_object(),q=0;if(1<d&&e&&(o=n[0],q=1),j||0===j||(j=o?this.resolution_ctx:this.resolution),this.db){if(this.db.search){const a=this.db.search(this,n,b,m,f,g,k,h);if(!1!==a)return a}const a=this;return async function(){for(let b,c;q<d;q++){if(c=n[q],c&&!p[c]){if(p[c]=1,b=await a.get_array(c,o,0,0,!1,!1),b=add_result(b,l,f,j),b){l=b;break}!o||f&&b&&l.length||(o=c)}f&&o&&q==d-1&&!l.length&&(j=a.resolution,o="",q=-1,p=create_object())}return return_result(l,j,b,m,f,i,g)}()}for(let e,g;q<d;q++){if(g=n[q],g&&!p[g]){if(p[g]=1,e=this.get_array(g,o,0,0,!1,!1),e=add_result(e,l,f,j),e){l=e;break}!o||f&&e&&l.length||(o=g)}f&&o&&q==d-1&&!l.length&&(j=this.resolution,o="",q=-1,p=create_object())}return return_result(l,j,b,m,f,i,g)};function return_result(a,b,c,d,e,f,g){let h=a.length,i=a;if(1<h)i=intersect(a,b,c,d,e,f,g);else if(1===h)return g?resolve_default.call(null,a[0],c,d):new Resolver(a[0]);return g?i:new Resolver(i)}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||[]:new Resolver(a)}):h&&h.length?e?resolve_default.call(this,h,c,d):new Resolver(h):e?[]:new Resolver}function add_result(a,b,c,d){let e=[];if(a&&a.length){if(a.length<=d)return void b.push(a);for(let b,c=0;c<d;c++)(b=a[c])&&(e[c]=b);if(e.length)return void b.push(e)}return c?void 0:e}Index.prototype.get_array=function(a,b,c,d,e,f,g){let h,i;return(b&&(i=this.bidirectional&&a>b,i&&(i=b,b=a,a=i)),this.compress&&(a=default_compress(a),b&&(b=default_compress(b))),this.db)?this.db.get(a,b,c,d,e,f,g):(b?(h=this.ctx.get(b),h=h&&h.get(a)):h=this.map.get(a),h)};
\ No newline at end of file
diff --git a/dist/module/bundle.js b/dist/module/bundle.js
index 9364100..95e5e38 100644
--- a/dist/module/bundle.js
+++ b/dist/module/bundle.js
@@ -6,7 +6,7 @@ import Index from "./index.js";
 import WorkerIndex from "./worker.js";
 import Resolver from "./resolver.js";
 import Encoder from "./encoder.js";
-import IdxDB from "./db/indexeddb/db.js";
+import IdxDB from "./db/indexeddb/index.js";
 import Charset from "./charset.js";
 import { KeystoreMap, KeystoreArray, KeystoreSet } from "./keystore.js";
 
diff --git a/dist/module/charset.js b/dist/module/charset.js
index 1b9b560..3f4c1ec 100644
--- a/dist/module/charset.js
+++ b/dist/module/charset.js
@@ -1,15 +1,14 @@
 import charset_latin_exact from "./charset/latin/exact.js";
-import charset_latin_default from "./charset/latin/default.js";
-import charset_latin_simple from "./charset/latin/simple.js";
+import charset_latin_normalize from "./charset/latin/normalize.js";
 import charset_latin_balance from "./charset/latin/balance.js";
 import charset_latin_advanced from "./charset/latin/advanced.js";
 import charset_latin_extra from "./charset/latin/extra.js";
 import charset_latin_soundex from "./charset/latin/soundex.js";
 
-// all charset
+// universal charset
 export const Exact = charset_latin_exact;
-export const Default = charset_latin_default;
-export const Normalize = charset_latin_simple;
+export const Default = charset_latin_normalize;
+export const Normalize = charset_latin_normalize;
 // latin charset
 export const LatinBalance = charset_latin_balance;
 export const LatinAdvanced = charset_latin_advanced;
@@ -17,14 +16,14 @@ export const LatinExtra = charset_latin_extra;
 export const LatinSoundex = charset_latin_soundex;
 // deprecated
 export const LatinExact = charset_latin_exact;
-export const LatinDefault = charset_latin_default;
-export const LatinSimple = charset_latin_simple;
+export const LatinDefault = charset_latin_normalize;
+export const LatinSimple = charset_latin_normalize;
 
 export default {
-    // all charset
+    // universal charset
     Exact: charset_latin_exact,
-    Default: charset_latin_default,
-    Normalize: charset_latin_simple,
+    Default: charset_latin_normalize,
+    Normalize: charset_latin_normalize,
     // latin charset
     LatinBalance: charset_latin_balance,
     LatinAdvanced: charset_latin_advanced,
@@ -32,6 +31,6 @@ export default {
     LatinSoundex: charset_latin_soundex,
     // deprecated
     LatinExact: charset_latin_exact,
-    LatinDefault: charset_latin_default,
-    LatinSimple: charset_latin_simple
+    LatinDefault: charset_latin_normalize,
+    LatinSimple: charset_latin_normalize
 };
\ No newline at end of file
diff --git a/dist/module/charset/latin/advanced.js b/dist/module/charset/latin/advanced.js
index a6d187d..5d4003c 100644
--- a/dist/module/charset/latin/advanced.js
+++ b/dist/module/charset/latin/advanced.js
@@ -17,7 +17,7 @@ export const replacer = [/([^aeo])h(.)/g, "$1$2", /([aeo])h([^aeo]|$)/g, "$1$2",
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !0,
     mapper: soundex,
     matcher: matcher,
diff --git a/dist/module/charset/latin/balance.js b/dist/module/charset/latin/balance.js
index dae9967..bae3dea 100644
--- a/dist/module/charset/latin/balance.js
+++ b/dist/module/charset/latin/balance.js
@@ -30,7 +30,7 @@ export const soundex = new Map([["b", "p"],
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !0,
     mapper: soundex
 };
diff --git a/dist/module/charset/latin/exact.js b/dist/module/charset/latin/exact.js
index 9fa871f..e51f713 100644
--- a/dist/module/charset/latin/exact.js
+++ b/dist/module/charset/latin/exact.js
@@ -3,8 +3,8 @@ import { EncoderOptions } from "../../type.js";
 /** @type EncoderOptions */
 const options = {
     normalize: !1,
-    numeric: !1,
-    split: /\s+/
+    numeric: !1
+    //split: /\s+/
     //normalize: false,
     //dedupe: false
 };
diff --git a/dist/module/charset/latin/extra.js b/dist/module/charset/latin/extra.js
index 02f7ae2..10a41b9 100644
--- a/dist/module/charset/latin/extra.js
+++ b/dist/module/charset/latin/extra.js
@@ -7,7 +7,7 @@ export const compact = [/(?!^)[aeo]/g, "" // before soundex: aeoy, old: aioy
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !0,
     mapper: soundex,
     replacer: replacer.concat(compact),
diff --git a/dist/module/charset/latin/default.js b/dist/module/charset/latin/normalize.js
similarity index 90%
rename from dist/module/charset/latin/default.js
rename to dist/module/charset/latin/normalize.js
index 4ba0cad..e9557b2 100644
--- a/dist/module/charset/latin/default.js
+++ b/dist/module/charset/latin/normalize.js
@@ -2,7 +2,7 @@ import { EncoderOptions } from "../../type.js";
 
 /** @type EncoderOptions */
 const options = {
-    normalize: !0
+    //normalize: true
     // normalize: function(str){
     //     return str.toLowerCase();
     // },
diff --git a/dist/module/charset/latin/simple.js b/dist/module/charset/latin/simple.js
deleted file mode 100644
index be96c47..0000000
--- a/dist/module/charset/latin/simple.js
+++ /dev/null
@@ -1,8 +0,0 @@
-import { EncoderOptions } from "../../type.js";
-
-/** @type EncoderOptions */
-const options = {
-    normalize: !0,
-    dedupe: !0
-};
-export default options;
\ No newline at end of file
diff --git a/dist/module/charset/latin/soundex.js b/dist/module/charset/latin/soundex.js
index c1ef7a2..c15547f 100644
--- a/dist/module/charset/latin/soundex.js
+++ b/dist/module/charset/latin/soundex.js
@@ -2,7 +2,7 @@ import { EncoderOptions } from "../../type.js";
 
 /** @type {EncoderOptions} */
 const options = {
-    normalize: !0,
+    //normalize: true,
     dedupe: !1,
     include: {
         letter: !0
diff --git a/dist/module/charset/normalize.js b/dist/module/charset/polyfill.js
similarity index 100%
rename from dist/module/charset/normalize.js
rename to dist/module/charset/polyfill.js
diff --git a/dist/module/db/clickhouse/db.js b/dist/module/db/clickhouse/index.js
similarity index 99%
rename from dist/module/db/clickhouse/db.js
rename to dist/module/db/clickhouse/index.js
index a160e17..f0fd081 100644
--- a/dist/module/db/clickhouse/db.js
+++ b/dist/module/db/clickhouse/index.js
@@ -47,7 +47,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_]/g, "");
 }
 
-let DB;
+let Index;
 
 /**
  * @constructor
@@ -74,7 +74,7 @@ export default function ClickhouseDB(name, config = {}) {
     if (!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
     //this.trx = false;
     this.support_tag_search = !0;
-    this.db = DB || (DB = config.db || null);
+    this.db = Index || (Index = config.db || null);
     Object.assign(defaults, config);
     config.database && (defaults.config.database = config.database);
     this.db && delete defaults.db;
@@ -93,7 +93,7 @@ ClickhouseDB.prototype.mount = function (flexsearch) {
 ClickhouseDB.prototype.open = async function () {
 
     if (!this.db) {
-        this.db = DB || (DB = new ClickHouse(defaults));
+        this.db = Index || (Index = new ClickHouse(defaults));
     }
 
     const exists = await this.db.query(`
@@ -174,7 +174,7 @@ ClickhouseDB.prototype.open = async function () {
 
 ClickhouseDB.prototype.close = function () {
     //DB && DB.close();
-    this.db = DB = null;
+    this.db = Index = null;
     return this;
 };
 
diff --git a/dist/module/db/indexeddb/db.js b/dist/module/db/indexeddb/index.js
similarity index 98%
rename from dist/module/db/indexeddb/db.js
rename to dist/module/db/indexeddb/index.js
index f57047c..1f4f651 100644
--- a/dist/module/db/indexeddb/db.js
+++ b/dist/module/db/indexeddb/index.js
@@ -18,7 +18,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_\-]/g, "");
 }
 
-const DB = create_object();
+const Index = create_object();
 
 /**
  * @param {string|PersistentOptions=} name
@@ -65,8 +65,8 @@ IdxDB.prototype.open = function () {
 
     // return this.db = new Promise(function(resolve, reject){
 
-    DB[self.id] || (DB[self.id] = []);
-    DB[self.id].push(self.field);
+    Index[self.id] || (Index[self.id] = []);
+    Index[self.id].push(self.field);
 
     const req = IndexedDB.open(self.id, VERSION);
 
@@ -82,8 +82,8 @@ IdxDB.prototype.open = function () {
         // IndexedDB is such a poor contribution :(
         for (let i = 0, ref; i < fields.length; i++) {
             ref = fields[i];
-            for (let j = 0, field; j < DB[self.id].length; j++) {
-                field = DB[self.id][j];
+            for (let j = 0, field; j < Index[self.id].length; j++) {
+                field = Index[self.id][j];
                 db.objectStoreNames.contains(ref + ("reg" !== ref ? field ? ":" + field : "" : "")) || db.createObjectStore(ref + ("reg" !== ref ? field ? ":" + field : "" : "")); //{ autoIncrement: true /*keyPath: "id"*/ }
                 //.createIndex("idx", "ids", { multiEntry: true, unique: false });
             }
@@ -167,8 +167,8 @@ IdxDB.prototype.clear = function () {
 
     for (let i = 0, ref; i < fields.length; i++) {
         ref = fields[i];
-        for (let j = 0, field; j < DB[this.id].length; j++) {
-            field = DB[this.id][j];
+        for (let j = 0, field; j < Index[this.id].length; j++) {
+            field = Index[this.id][j];
             stores.push(ref + ("reg" !== ref ? field ? ":" + field : "" : ""));
         }
     }
diff --git a/dist/module/db/mongodb/db.js b/dist/module/db/mongodb/index.js
similarity index 98%
rename from dist/module/db/mongodb/db.js
rename to dist/module/db/mongodb/index.js
index 1ab13f0..f4ac562 100644
--- a/dist/module/db/mongodb/db.js
+++ b/dist/module/db/mongodb/index.js
@@ -16,7 +16,7 @@ function sanitize(str) {
 }
 
 let CLIENT,
-    DB = Object.create(null);
+    Index = Object.create(null);
 
 
 /**
@@ -38,7 +38,7 @@ export default function MongoDB(name, config = {}) {
     this.id = "flexsearch" + (name ? "-" + sanitize(name) : "");
     this.field = config.field ? "-" + sanitize(config.field) : "";
     this.type = config.type || "";
-    this.db = config.db || DB[this.id] || CLIENT || null;
+    this.db = config.db || Index[this.id] || CLIENT || null;
     this.trx = !1;
     this.support_tag_search = /* tag? */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/;
     Object.assign(defaults, config);
@@ -87,7 +87,7 @@ async function createCollection(db, ref, field) {
 MongoDB.prototype.open = async function () {
 
     if (!this.db) {
-        if (!(this.db = DB[this.id])) {
+        if (!(this.db = Index[this.id])) {
             if (!(this.db = CLIENT)) {
 
                 let url = defaults.url;
@@ -101,7 +101,7 @@ MongoDB.prototype.open = async function () {
     }
 
     if (this.db.db) {
-        this.db = DB[this.id] = this.db.db(this.id);
+        this.db = Index[this.id] = this.db.db(this.id);
     }
 
     const collections = await this.db.listCollections().toArray();
@@ -126,7 +126,7 @@ MongoDB.prototype.open = async function () {
 MongoDB.prototype.close = function () {
     //CLIENT && CLIENT.close();
     this.db = CLIENT = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     return this;
 };
 
diff --git a/dist/module-debug/db/postgres/db.js b/dist/module/db/postgres/index.js
similarity index 99%
rename from dist/module-debug/db/postgres/db.js
rename to dist/module/db/postgres/index.js
index 8c96b4b..f4713df 100644
--- a/dist/module-debug/db/postgres/db.js
+++ b/dist/module/db/postgres/index.js
@@ -61,9 +61,7 @@ export default function PostgresDB(name, config = {}) {
     this.id = (config.schema ? sanitize(config.schema) : defaults.schema) + (name ? "_" + sanitize(name) : "");
     this.field = config.field ? "_" + sanitize(config.field) : "";
     this.type = config.type ? types[config.type.toLowerCase()] : "text";
-    this.support_tag_search =
-    /* tag? */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/
-    /*await rows.hasNext()*/;
+    this.support_tag_search = /* tag? */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/;
     if (!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
     this.db = DB || (DB = config.db || null);
     Object.assign(defaults, config);
@@ -408,7 +406,8 @@ PostgresDB.prototype.search = function (flexsearch, query, limit = 100, offset =
 
         for (let i = 0; i < query_length; i++) {
             where += (where ? "," : "") + "$" + count++;
-        }where = "key " + (1 < query_length ? "IN (" + where + ")" : "= " + where);
+        }
+        where = "key " + (1 < query_length ? "IN (" + where + ")" : "= " + where);
 
         if (tags) {
             where = "(" + where + ")";
@@ -608,7 +607,7 @@ PostgresDB.prototype.commit = async function (flexsearch, _replace, _append) {
             // while(data.length){
             //     let next;
             //     if(data.length > MAXIMUM_QUERY_VARS){
-
+            //         next = data.slice(MAXIMUM_QUERY_VARS);
             //         data = data.slice(0, MAXIMUM_QUERY_VARS);
             //     }
             //     let insert = pgp.helpers.insert(data, stmt);
diff --git a/dist/module/db/redis/db.js b/dist/module/db/redis/index.js
similarity index 100%
rename from dist/module/db/redis/db.js
rename to dist/module/db/redis/index.js
diff --git a/dist/module/db/sqlite/db.js b/dist/module/db/sqlite/index.js
similarity index 99%
rename from dist/module/db/sqlite/db.js
rename to dist/module/db/sqlite/index.js
index 35df78b..82728eb 100644
--- a/dist/module/db/sqlite/db.js
+++ b/dist/module/db/sqlite/index.js
@@ -36,7 +36,7 @@ function sanitize(str) {
 
 // global transaction to keep track of database lock
 const TRX = Object.create(null),
-      DB = Object.create(null);
+      Index = Object.create(null);
 
 
 /**
@@ -59,7 +59,7 @@ export default function SqliteDB(name, config = {}) {
     this.id = config.path || (":memory:" === name ? name : "flexsearch" + (name ? "-" + sanitize(name) : "") + ".sqlite");
     this.field = config.field ? "_" + sanitize(config.field) : "";
     this.support_tag_search = /* tag? */ /* stringify */ /* stringify */ /* single param */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/;
-    this.db = config.db || DB[this.id] || null;
+    this.db = config.db || Index[this.id] || null;
     this.type = config.type ? types[config.type.toLowerCase()] : "string";
     if (!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
 }
@@ -77,7 +77,7 @@ SqliteDB.prototype.open = async function () {
 
     if (!this.db) {
 
-        if (!(this.db = DB[this.id])) {
+        if (!(this.db = Index[this.id])) {
 
             let filepath = this.id;
             if (":memory:" !== filepath) {
@@ -89,7 +89,7 @@ SqliteDB.prototype.open = async function () {
                 }
             }
 
-            this.db = DB[this.id] = new sqlite3.Database(filepath);
+            this.db = Index[this.id] = new sqlite3.Database(filepath);
         }
     }
 
@@ -197,7 +197,7 @@ SqliteDB.prototype.open = async function () {
 SqliteDB.prototype.close = function () {
     this.db && this.db.close();
     this.db = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     TRX[this.id] = null;
     return this;
 };
diff --git a/dist/module/document.js b/dist/module/document.js
index 34c134c..00ab69c 100644
--- a/dist/module/document.js
+++ b/dist/module/document.js
@@ -454,20 +454,25 @@ Document.prototype.get = function (id) {
 
     if (this.db) {
         return this.index.get(this.field[0]).db.enrich(id).then(function (result) {
-            return result[0] && result[0].doc;
+            return result[0] && result[0].doc || null;
         });
     }
 
-    return this.store.get(id);
+    return this.store.get(id) || null;
 };
 
 /**
- * @param {number|string} id
+ * @param {number|string|Object} id
  * @param {Object} data
  * @return {Document}
  */
 Document.prototype.set = function (id, data) {
 
+    if ("object" == typeof id) {
+        data = id;
+        id = parse_simple(data, this.key);
+    }
+
     this.store.set(id, data);
     return this;
 };
diff --git a/dist/module/encoder.js b/dist/module/encoder.js
index 0d18ae0..ec7c94c 100644
--- a/dist/module/encoder.js
+++ b/dist/module/encoder.js
@@ -1,6 +1,6 @@
 
 import { merge_option } from "./common.js";
-import normalize_polyfill from "./charset/normalize.js";
+import normalize_polyfill from "./charset/polyfill.js";
 import { EncoderOptions } from "./type.js";
 
 /*
@@ -508,6 +508,11 @@ Encoder.prototype.encode = function (str) {
     return final;
 };
 
+export function fallback_encoder(str) {
+
+    return str.normalize("NFKD").replace(normalize, "").toLowerCase().trim().split(/\s+/);
+}
+
 // Encoder.prototype.compress = function(str) {
 //
 //     //return str;
diff --git a/dist/module/index.js b/dist/module/index.js
index 7c3c6be..de9ca8c 100644
--- a/dist/module/index.js
+++ b/dist/module/index.js
@@ -7,13 +7,13 @@
  */
 
 import { IndexOptions, ContextOptions, EncoderOptions } from "./type.js";
-import Encoder from "./encoder.js";
+import Encoder, { fallback_encoder } from "./encoder.js";
 import Cache, { searchCache } from "./cache.js";
 import Charset from "./charset.js";
 import { KeystoreMap, KeystoreSet } from "./keystore.js";
 import { is_array, is_string } from "./common.js";
 import { exportIndex, importIndex, serialize } from "./serialize.js";
-import default_encoder from "./charset/latin/default.js";
+//import default_encoder from "./charset/latin/default.js";
 import apply_preset from "./preset.js";
 import apply_async from "./async.js";
 import tick from "./profiler.js";
@@ -39,7 +39,7 @@ export default function Index(options, _register) {
     let tmp = options.context;
     /** @type ContextOptions */
     const context = /** @type ContextOptions */ /* tag? */ /* stringify */ /* stringify */ /* single param */ /* skip update: */ /* append: */ /* skip update: */ /* skip_update: */ /* skip deletion */!0 /*await rows.hasNext()*/ /*await rows.hasNext()*/ /*await rows.hasNext()*/ === tmp ? { depth: 1 } : tmp || {},
-          encoder = is_string(options.encoder) ? Charset[options.encoder] : options.encode || options.encoder || default_encoder;
+          encoder = is_string(options.encoder) ? Charset[options.encoder] : options.encode || options.encoder || {} /*default_encoder*/;
 
     /** @type Encoder */
     this.encoder = encoder.encode ? encoder : "object" == typeof encoder ? new Encoder( /** @type {EncoderOptions} */encoder) : { encode: encoder };
diff --git a/dist/module/index/search.js b/dist/module/index/search.js
index 75d25a3..e6ba8b8 100644
--- a/dist/module/index/search.js
+++ b/dist/module/index/search.js
@@ -57,8 +57,7 @@ Index.prototype.search = function (query, limit, options) {
         offset = options.offset || 0;
         context = options.context;
         suggest = options.suggest;
-        resolve = /*global_resolve &&*/ /* suggest */
-        /* append: */ /* enrich */!1 !== options.resolve;
+        resolve = /*global_resolve &&*/ /* suggest */ /* append: */ /* enrich */!1 !== options.resolve;
         //resolve || (global_resolve = 0);
         enrich = resolve && options.enrich;
         boost = options.boost;
@@ -91,8 +90,8 @@ Index.prototype.search = function (query, limit, options) {
 
     // fast path single context
     if (2 === length && context && !suggest) {
-        return single_term_query.call(this, query_terms[0], // term
-        query_terms[1], // ctx
+        return single_term_query.call(this, query_terms[1], // term
+        query_terms[0], // ctx
         limit, offset, resolve, enrich, tag);
     }
 
diff --git a/doc/encoder.md b/doc/encoder.md
index ec97871..7b53ab1 100644
--- a/doc/encoder.md
+++ b/doc/encoder.md
@@ -292,7 +292,7 @@ const index = new Index({
         <td>Stop-word filter is like a blacklist of words to be filtered out from indexing at all (e.g. "and", "to" or "be"). This is also very useful when using <a href="../README.md#context-search">Context Search</a></td>
         <td>
             <code>Set(["and", "to", "be"])</code><br>
-            <code>function(str) => bool</code> custom function<hr style="margin: 5px">
+            <code>function(str) => bool</code> custom function<h2></h2>
             <code>encoder.addFilter("and")</code>
         </td>
     </tr>
@@ -301,7 +301,7 @@ const index = new Index({
         <td><code>stemmer</code></td>
         <td>Stemmer will normalize several linguistic mutations of the same word (e.g. "run" and "running", or "property" and "properties"). This is also very useful when using <a href="../README.md#context-search">Context Search</a></td>
         <td>
-            <code>Map([["ing", ""], ["ies", "y"]])</code><hr style="margin: 5px">
+            <code>Map([["ing", ""], ["ies", "y"]])</code><h2></h2>
             <code>encoder.addStemmer("ing", "")</code>
         </td>
     </tr>
@@ -310,7 +310,7 @@ const index = new Index({
         <td><code>mapper</code></td>
         <td>Mapper will replace a single char (e.g. "é" into "e")</td>
         <td>
-            <code>Map([["é", "e"], ["ß", "ss"]])</code><hr style="margin: 5px">
+            <code>Map([["é", "e"], ["ß", "ss"]])</code><h2></h2>
             <code>encoder.addMapper("é", "e")</code>
         </td>
     </tr>
@@ -319,7 +319,7 @@ const index = new Index({
         <td><code>matcher</code></td>
         <td>Matcher will do same as Mapper but instead of single chars it will replace char sequences</td>
         <td>
-            <code>Map([["and", "&"], ["usd", "$"]])</code><hr style="margin: 5px">
+            <code>Map([["and", "&"], ["usd", "$"]])</code><h2></h2>
             <code>encoder.addMatcher("and", "&")</code>
         </td>
     </tr>
@@ -328,7 +328,7 @@ const index = new Index({
         <td><code>replacer</code></td>
         <td>Replacer takes custom regular expressions and couldn't get optimized in the same way as Mapper or Matcher. You should take this as the last option when no other replacement can do the same.</td>
         <td>
-            <code>[/[^a-z0-9]/g, "", /([^aeo])h(.)/g, "$1$2"])</code><hr style="margin: 5px">
+            <code>[/[^a-z0-9]/g, "", /([^aeo])h(.)/g, "$1$2"])</code><h2></h2>
             <code>encoder.addReplacer(/[^a-z0-9]/g, "")</code>
         </td>
     </tr>
@@ -363,7 +363,7 @@ const index = new Index({
 You can't extend to the built-in tokenizer "exact", "forward", "bidirectional" or "full".
 If nothing of them are applicable for your task you should tokenize everything inside your custom encoder function.
 
-If you get some good results please feel free to share your encoder.
+If you get some good results please feel free creating a pull request to share your encoder to the community.
 
 ### Encoder Processing Workflow
 
@@ -381,7 +381,7 @@ If you get some good results please feel free to share your encoder.
 
 This workflow schema might help you to understand each step in the iteration:
 <br><br>
-<img src="encoder-workflow.svg" style="max-width: 650px" width="100%">
+<img src="encoder-workflow.svg" width="750px">
 
 ## Right-To-Left Support
 
diff --git a/package-lock.json b/package-lock.json
index f61cb45..9ef7d07 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "flexsearch",
-  "version": "0.8.143",
+  "version": "0.8.147",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "flexsearch",
-      "version": "0.8.143",
+      "version": "0.8.147",
       "funding": [
         {
           "type": "github",
diff --git a/package.json b/package.json
index b8d7f4b..34ed0a4 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "public": true,
   "preferGlobal": false,
   "name": "flexsearch",
-  "version": "0.8.143",
+  "version": "0.8.147",
   "description": "Next-Generation full-text search library for Browser and Node.js",
   "homepage": "https://github.com/nextapps-de/flexsearch/",
   "author": "Thomas Wilkerling",
@@ -41,8 +41,8 @@
       "require": "./dist/lang/*.min.js"
     },
     "./db/*": {
-      "import": "./dist/module/db/*/db.js",
-      "require": "./dist/db/*/db.cjs"
+      "import": "./dist/module/db/*/index.js",
+      "require": "./dist/db/*/index.cjs"
     },
     "./debug": {
       "import": "./dist/flexsearch.bundle.module.debug.js",
@@ -73,7 +73,7 @@
     "build:es5": "node task/build RELEASE=es5 DEBUG=false PROFILER=false SUPPORT_WORKER=true SUPPORT_ENCODER=true SUPPORT_CHARSET=true SUPPORT_CACHE=true SUPPORT_ASYNC=true SUPPORT_STORE=true SUPPORT_TAGS=true SUPPORT_SUGGESTION=true SUPPORT_SERIALIZE=true SUPPORT_DOCUMENT=true POLYFILL=true SUPPORT_PERSISTENT=true SUPPORT_RESOLVER=true SUPPORT_KEYSTORE=true SUPPORT_COMPRESSION=false LANGUAGE_OUT=ECMASCRIPT5_STRICT",
     "build:es5:debug": "node task/build RELEASE=es5 DEBUG=true PROFILER=false SUPPORT_WORKER=true SUPPORT_ENCODER=true SUPPORT_CHARSET=true SUPPORT_CACHE=true SUPPORT_ASYNC=true SUPPORT_STORE=true SUPPORT_TAGS=true SUPPORT_SUGGESTION=true SUPPORT_SERIALIZE=true SUPPORT_DOCUMENT=true POLYFILL=true SUPPORT_PERSISTENT=true SUPPORT_RESOLVER=true SUPPORT_KEYSTORE=true SUPPORT_COMPRESSION=false FORMATTING=PRETTY_PRINT LANGUAGE_OUT=ECMASCRIPT5_STRICT",
     "build:lang": "node task/build RELEASE=lang",
-    "build:db": "npx rollup tmp/db/indexeddb/db.js --file dist/db/indexeddb/db.cjs --format cjs && npx rollup tmp/db/postgres/db.js --file dist/db/postgres/db.cjs --format cjs && npx rollup tmp/db/sqlite/db.js --file dist/db/sqlite/db.cjs --format cjs && npx rollup tmp/db/mongodb/db.js --file dist/db/mongodb/db.cjs --format cjs && npx rollup tmp/db/redis/db.js --file dist/db/redis/db.cjs --format cjs && npx rollup tmp/db/clickhouse/db.js --file dist/db/clickhouse/db.cjs --format cjs",
+    "build:db": "npx rollup tmp/db/indexeddb/index.js --file dist/db/indexeddb/index.cjs --format cjs && npx rollup tmp/db/postgres/index.js --file dist/db/postgres/index.cjs --format cjs && npx rollup tmp/db/sqlite/index.js --file dist/db/sqlite/index.cjs --format cjs && npx rollup tmp/db/mongodb/index.js --file dist/db/mongodb/index.cjs --format cjs && npx rollup tmp/db/redis/index.js --file dist/db/redis/index.cjs --format cjs && npx rollup tmp/db/clickhouse/index.js --file dist/db/clickhouse/index.cjs --format cjs",
     "build:module": "node task/babel && exit 0",
     "build:module:debug": "node task/babel DEBUG=true && exit 0",
     "build:module:min": "node task/babel RELEASE=min && exit 0",
diff --git a/src/bundle.js b/src/bundle.js
index 0cdd059..7f72476 100644
--- a/src/bundle.js
+++ b/src/bundle.js
@@ -31,7 +31,7 @@ import Index from "./index.js";
 import WorkerIndex from "./worker.js";
 import Resolver from "./resolver.js";
 import Encoder from "./encoder.js";
-import IdxDB from "./db/indexeddb/db.js";
+import IdxDB from "./db/indexeddb/index.js";
 import Charset from "./charset.js";
 import { KeystoreMap, KeystoreArray, KeystoreSet } from "./keystore.js";
 
diff --git a/src/charset.js b/src/charset.js
index 8b84572..e036fa8 100644
--- a/src/charset.js
+++ b/src/charset.js
@@ -1,15 +1,14 @@
 import charset_latin_exact from "./charset/latin/exact.js";
-import charset_latin_default from "./charset/latin/default.js";
-import charset_latin_simple from "./charset/latin/simple.js";
+import charset_latin_normalize from "./charset/latin/normalize.js";
 import charset_latin_balance from "./charset/latin/balance.js";
 import charset_latin_advanced from "./charset/latin/advanced.js";
 import charset_latin_extra from "./charset/latin/extra.js";
 import charset_latin_soundex from "./charset/latin/soundex.js";
 
-// all charset
+// universal charset
 export const Exact = charset_latin_exact;
-export const Default = charset_latin_default;
-export const Normalize = charset_latin_simple;
+export const Default = charset_latin_normalize;
+export const Normalize = charset_latin_normalize;
 // latin charset
 export const LatinBalance = charset_latin_balance;
 export const LatinAdvanced = charset_latin_advanced;
@@ -17,14 +16,14 @@ export const LatinExtra = charset_latin_extra;
 export const LatinSoundex = charset_latin_soundex;
 // deprecated
 export const LatinExact = charset_latin_exact;
-export const LatinDefault = charset_latin_default;
-export const LatinSimple = charset_latin_simple;
+export const LatinDefault = charset_latin_normalize;
+export const LatinSimple = charset_latin_normalize;
 
 export default {
-    // all charset
+    // universal charset
     Exact: charset_latin_exact,
-    Default: charset_latin_default,
-    Normalize: charset_latin_simple,
+    Default: charset_latin_normalize,
+    Normalize: charset_latin_normalize,
     // latin charset
     LatinBalance: charset_latin_balance,
     LatinAdvanced: charset_latin_advanced,
@@ -32,6 +31,6 @@ export default {
     LatinSoundex: charset_latin_soundex,
     // deprecated
     LatinExact: charset_latin_exact,
-    LatinDefault: charset_latin_default,
-    LatinSimple: charset_latin_simple,
+    LatinDefault: charset_latin_normalize,
+    LatinSimple: charset_latin_normalize
 };
diff --git a/src/charset/latin/advanced.js b/src/charset/latin/advanced.js
index 145a9ea..9abb73b 100644
--- a/src/charset/latin/advanced.js
+++ b/src/charset/latin/advanced.js
@@ -25,7 +25,7 @@ export const replacer = [
 
 /** @type EncoderOptions */
 const options = {
-    normalize: true,
+    //normalize: true,
     dedupe: true,
     mapper: soundex,
     matcher: matcher,
diff --git a/src/charset/latin/balance.js b/src/charset/latin/balance.js
index c6e24b6..7d42731 100644
--- a/src/charset/latin/balance.js
+++ b/src/charset/latin/balance.js
@@ -40,7 +40,7 @@ export const soundex = new Map([
 
 /** @type EncoderOptions */
 const options = {
-    normalize: true,
+    //normalize: true,
     dedupe: true,
     mapper: soundex
 };
diff --git a/src/charset/latin/exact.js b/src/charset/latin/exact.js
index 5f7adb2..d9fa4fc 100644
--- a/src/charset/latin/exact.js
+++ b/src/charset/latin/exact.js
@@ -3,8 +3,8 @@ import { EncoderOptions } from "../../type.js";
 /** @type EncoderOptions */
 const options = {
     normalize: false,
-    numeric: false,
-    split: /\s+/
+    numeric: false
+    //split: /\s+/
     //normalize: false,
     //dedupe: false
 };
diff --git a/src/charset/latin/extra.js b/src/charset/latin/extra.js
index 5014c03..31512c9 100644
--- a/src/charset/latin/extra.js
+++ b/src/charset/latin/extra.js
@@ -8,7 +8,7 @@ export const compact = [
 
 /** @type EncoderOptions */
 const options = {
-    normalize: true,
+    //normalize: true,
     dedupe: true,
     mapper: soundex,
     replacer: replacer.concat(compact),
diff --git a/src/charset/latin/default.js b/src/charset/latin/normalize.js
similarity index 90%
rename from src/charset/latin/default.js
rename to src/charset/latin/normalize.js
index 3fd6dd9..ea36514 100644
--- a/src/charset/latin/default.js
+++ b/src/charset/latin/normalize.js
@@ -2,7 +2,7 @@ import { EncoderOptions } from "../../type.js";
 
 /** @type EncoderOptions */
 const options = {
-    normalize: true
+    //normalize: true
     // normalize: function(str){
     //     return str.toLowerCase();
     // },
diff --git a/src/charset/latin/simple.js b/src/charset/latin/simple.js
deleted file mode 100644
index 92e463f..0000000
--- a/src/charset/latin/simple.js
+++ /dev/null
@@ -1,8 +0,0 @@
-import { EncoderOptions } from "../../type.js";
-
-/** @type EncoderOptions */
-const options = {
-    normalize: true,
-    dedupe: true
-};
-export default options;
diff --git a/src/charset/latin/soundex.js b/src/charset/latin/soundex.js
index 8de08be..610a7ab 100644
--- a/src/charset/latin/soundex.js
+++ b/src/charset/latin/soundex.js
@@ -2,7 +2,7 @@ import { EncoderOptions } from "../../type.js";
 
 /** @type {EncoderOptions} */
 const options = {
-    normalize: true,
+    //normalize: true,
     dedupe: false,
     include: {
         letter: true
diff --git a/src/charset/normalize.js b/src/charset/polyfill.js
similarity index 100%
rename from src/charset/normalize.js
rename to src/charset/polyfill.js
diff --git a/src/db/clickhouse/db.js b/src/db/clickhouse/index.js
similarity index 99%
rename from src/db/clickhouse/db.js
rename to src/db/clickhouse/index.js
index 80b0640..8c913e9 100644
--- a/src/db/clickhouse/db.js
+++ b/src/db/clickhouse/index.js
@@ -47,7 +47,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_]/g, "");
 }
 
-let DB;
+let Index;
 
 /**
  * @constructor
@@ -74,7 +74,7 @@ export default function ClickhouseDB(name, config = {}){
     if(!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
     //this.trx = false;
     this.support_tag_search = true;
-    this.db = DB || (DB = config.db || null);
+    this.db = Index || (Index = config.db || null);
     Object.assign(defaults, config);
     config.database && (defaults.config.database = config.database);
     this.db && delete defaults.db;
@@ -93,8 +93,8 @@ ClickhouseDB.prototype.mount = function(flexsearch){
 ClickhouseDB.prototype.open = async function(){
 
     if(!this.db) {
-        this.db = DB || (
-            DB = new ClickHouse(defaults)
+        this.db = Index || (
+            Index = new ClickHouse(defaults)
         );
     }
 
@@ -176,7 +176,7 @@ ClickhouseDB.prototype.open = async function(){
 
 ClickhouseDB.prototype.close = function(){
     //DB && DB.close();
-    this.db = DB = null;
+    this.db = Index = null;
     return this;
 };
 
diff --git a/src/db/clickhouse/package.json b/src/db/clickhouse/package.json
index da81e64..0a25556 100644
--- a/src/db/clickhouse/package.json
+++ b/src/db/clickhouse/package.json
@@ -3,7 +3,7 @@
   "preferGlobal": false,
   "name": "flexsearch-clickhouse",
   "version": "0.1.0",
-  "main": "db.js",
+  "main": "index.js",
   "dependencies": {
     "clickhouse": "^2.6.0"
   }
diff --git a/src/db/indexeddb/db.js b/src/db/indexeddb/index.js
similarity index 98%
rename from src/db/indexeddb/db.js
rename to src/db/indexeddb/index.js
index 8c73606..6842441 100644
--- a/src/db/indexeddb/db.js
+++ b/src/db/indexeddb/index.js
@@ -40,7 +40,7 @@ function sanitize(str) {
     return str.toLowerCase().replace(/[^a-z0-9_\-]/g, "");
 }
 
-const DB = create_object();
+const Index = create_object();
 
 /**
  * @param {string|PersistentOptions=} name
@@ -88,8 +88,8 @@ IdxDB.prototype.open = function(){
 
    // return this.db = new Promise(function(resolve, reject){
 
-        DB[self.id] || (DB[self.id] = []);
-        DB[self.id].push(self.field);
+        Index[self.id] || (Index[self.id] = []);
+        Index[self.id].push(self.field);
 
         const req = IndexedDB.open(self.id, VERSION);
 
@@ -105,8 +105,8 @@ IdxDB.prototype.open = function(){
             // IndexedDB is such a poor contribution :(
             for(let i = 0, ref; i < fields.length; i++){
                 ref = fields[i];
-                for(let j = 0, field; j < DB[self.id].length; j++){
-                    field = DB[self.id][j];
+                for(let j = 0, field; j < Index[self.id].length; j++){
+                    field = Index[self.id][j];
                     db.objectStoreNames.contains(ref + (ref !== "reg" ? (field ? ":" + field : "") : "")) ||
                     db.createObjectStore(ref + (ref !== "reg" ? (field ? ":" + field : "") : ""));//{ autoIncrement: true /*keyPath: "id"*/ }
                     //.createIndex("idx", "ids", { multiEntry: true, unique: false });
@@ -191,8 +191,8 @@ IdxDB.prototype.clear = function(){
 
     for(let i = 0, ref; i < fields.length; i++){
         ref = fields[i];
-        for(let j = 0, field; j < DB[this.id].length; j++){
-            field = DB[this.id][j];
+        for(let j = 0, field; j < Index[this.id].length; j++){
+            field = Index[this.id][j];
             stores.push(ref + (ref !== "reg" ? (field ? ":" + field : "") : ""));
         }
     }
diff --git a/src/db/mongodb/db.js b/src/db/mongodb/index.js
similarity index 98%
rename from src/db/mongodb/db.js
rename to src/db/mongodb/index.js
index dbdbb3f..39d41c9 100644
--- a/src/db/mongodb/db.js
+++ b/src/db/mongodb/index.js
@@ -15,7 +15,7 @@ function sanitize(str) {
 }
 
 let CLIENT;
-let DB = Object.create(null);
+let Index = Object.create(null);
 
 /**
  * @constructor
@@ -36,7 +36,7 @@ export default function MongoDB(name, config = {}){
     this.id = "flexsearch" + (name ? "-" + sanitize(name) : "");
     this.field = config.field ? "-" + sanitize(config.field) : "";
     this.type = config.type || "";
-    this.db = config.db || DB[this.id] || CLIENT || null;
+    this.db = config.db || Index[this.id] || CLIENT || null;
     this.trx = false;
     this.support_tag_search = true;
     Object.assign(defaults, config);
@@ -85,7 +85,7 @@ async function createCollection(db, ref, field){
 MongoDB.prototype.open = async function(){
 
     if(!this.db){
-        if(!(this.db = DB[this.id])){
+        if(!(this.db = Index[this.id])){
             if(!(this.db = CLIENT)){
 
                 let url = defaults.url;
@@ -101,7 +101,7 @@ MongoDB.prototype.open = async function(){
     }
 
     if(this.db.db){
-        this.db = DB[this.id] = this.db.db(this.id);
+        this.db = Index[this.id] = this.db.db(this.id);
     }
 
     const collections = await this.db.listCollections().toArray();
@@ -125,7 +125,7 @@ MongoDB.prototype.open = async function(){
 MongoDB.prototype.close = function(){
     //CLIENT && CLIENT.close();
     this.db = CLIENT = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     return this;
 };
 
diff --git a/src/db/mongodb/package.json b/src/db/mongodb/package.json
index 3842248..7b8a20d 100644
--- a/src/db/mongodb/package.json
+++ b/src/db/mongodb/package.json
@@ -3,7 +3,7 @@
   "preferGlobal": false,
   "name": "flexsearch-mongodb",
   "version": "0.1.0",
-  "main": "db.js",
+  "main": "index.js",
   "dependencies": {
     "mongodb": "^6.13.0"
   }
diff --git a/src/db/postgres/db.js b/src/db/postgres/index.js
similarity index 100%
rename from src/db/postgres/db.js
rename to src/db/postgres/index.js
diff --git a/src/db/postgres/package.json b/src/db/postgres/package.json
index 6680183..77492ee 100644
--- a/src/db/postgres/package.json
+++ b/src/db/postgres/package.json
@@ -3,7 +3,7 @@
   "preferGlobal": false,
   "name": "flexsearch-postgres",
   "version": "0.1.0",
-  "main": "db.js",
+  "main": "index.js",
   "dependencies": {
     "pg-promise": "^11.10.2"
   }
diff --git a/src/db/redis/db.js b/src/db/redis/index.js
similarity index 100%
rename from src/db/redis/db.js
rename to src/db/redis/index.js
diff --git a/src/db/redis/package.json b/src/db/redis/package.json
index 6b5cadb..1ae1c71 100644
--- a/src/db/redis/package.json
+++ b/src/db/redis/package.json
@@ -3,7 +3,7 @@
   "preferGlobal": false,
   "name": "flexsearch-redis",
   "version": "0.1.0",
-  "main": "db.js",
+  "main": "index.js",
   "dependencies": {
     "redis": "^4.7.0"
   }
diff --git a/src/db/sqlite/db.js b/src/db/sqlite/index.js
similarity index 99%
rename from src/db/sqlite/db.js
rename to src/db/sqlite/index.js
index 70a09f0..9f83589 100644
--- a/src/db/sqlite/db.js
+++ b/src/db/sqlite/index.js
@@ -35,7 +35,7 @@ function sanitize(str) {
 
 // global transaction to keep track of database lock
 const TRX = Object.create(null);
-const DB = Object.create(null);
+const Index = Object.create(null);
 
 /**
  * @constructor
@@ -61,7 +61,7 @@ export default function SqliteDB(name, config = {}){
     );
     this.field = config.field ? "_" + sanitize(config.field) : "";
     this.support_tag_search = true;
-    this.db = config.db || DB[this.id] || null;
+    this.db = config.db || Index[this.id] || null;
     this.type = config.type ? types[config.type.toLowerCase()] : "string";
     if(!this.type) throw new Error("Unknown type of ID '" + config.type + "'");
 };
@@ -79,7 +79,7 @@ SqliteDB.prototype.open = async function(){
 
     if(!this.db){
 
-        if(!(this.db = DB[this.id])){
+        if(!(this.db = Index[this.id])){
 
             let filepath = this.id;
             if(filepath !== ":memory:"){
@@ -91,7 +91,7 @@ SqliteDB.prototype.open = async function(){
                 }
             }
 
-            this.db = DB[this.id] = new sqlite3.Database(filepath);
+            this.db = Index[this.id] = new sqlite3.Database(filepath);
         }
     }
 
@@ -201,7 +201,7 @@ SqliteDB.prototype.open = async function(){
 SqliteDB.prototype.close = function(){
     this.db && this.db.close();
     this.db = null;
-    DB[this.id] = null;
+    Index[this.id] = null;
     TRX[this.id] = null;
     return this;
 };
diff --git a/src/db/sqlite/package.json b/src/db/sqlite/package.json
index e1d276d..7364563 100644
--- a/src/db/sqlite/package.json
+++ b/src/db/sqlite/package.json
@@ -3,7 +3,7 @@
   "preferGlobal": false,
   "name": "flexsearch-sqlite",
   "version": "0.1.0",
-  "main": "db.js",
+  "main": "index.js",
   "dependencies": {
     "sqlite3": "^5.1.7"
   }
diff --git a/src/document.js b/src/document.js
index e3f535c..b298167 100644
--- a/src/document.js
+++ b/src/document.js
@@ -522,7 +522,7 @@ if(SUPPORT_STORE){
      */
     Document.prototype.set = function(id, data){
 
-        if(is_object(id)){
+        if(typeof id === "object"){
             data = id;
             id = parse_simple(data, this.key);
         }
diff --git a/src/encoder.js b/src/encoder.js
index 217db51..6338d31 100644
--- a/src/encoder.js
+++ b/src/encoder.js
@@ -6,7 +6,7 @@ import {
 } from "./config.js";
 // <-- COMPILER BLOCK
 import { merge_option } from "./common.js";
-import normalize_polyfill from "./charset/normalize.js";
+import normalize_polyfill from "./charset/polyfill.js";
 import { EncoderOptions } from "./type.js";
 
 /*
@@ -556,6 +556,11 @@ Encoder.prototype.encode = function(str){
     return final;
 };
 
+export function fallback_encoder(str){
+
+    return str.normalize("NFKD").replace(normalize, "").toLowerCase().trim().split(/\s+/);
+}
+
 // Encoder.prototype.compress = function(str) {
 //
 //     //return str;
diff --git a/src/index.js b/src/index.js
index 797311c..76c73b8 100644
--- a/src/index.js
+++ b/src/index.js
@@ -23,13 +23,14 @@ import {
 // <-- COMPILER BLOCK
 
 import { IndexOptions, ContextOptions, EncoderOptions } from "./type.js";
-import Encoder from "./encoder.js";
+import Encoder, { fallback_encoder } from "./encoder.js";
 import Cache, { searchCache } from "./cache.js";
 import Charset from "./charset.js";
 import { KeystoreMap, KeystoreSet } from "./keystore.js";
 import { is_array, is_string } from "./common.js";
 import { exportIndex, importIndex, serialize } from "./serialize.js";
-import default_encoder from "./charset/latin/default.js";
+import { remove_index } from "./index/remove.js";
+//import default_encoder from "./charset/latin/default.js";
 import apply_preset from "./preset.js";
 import apply_async from "./async.js";
 import tick from "./profiler.js";
@@ -65,13 +66,10 @@ export default function Index(options, _register){
             ? { depth: 1 }
             : tmp || {}
     );
-
     const encoder = SUPPORT_CHARSET && is_string(options.encoder)
         ? Charset[options.encoder]
         : options.encode || options.encoder || (
-          SUPPORT_ENCODER ? default_encoder : function(str){
-              return str.toLowerCase().trim().split(/\s+/);
-          }
+          SUPPORT_ENCODER ? {} /*default_encoder*/ : fallback_encoder
     );
     /** @type Encoder */
     this.encoder = encoder.encode
@@ -221,31 +219,31 @@ Index.prototype.update = function(id, content){
         : this.add(id, content);
 };
 
-/**
- * @param map
- * @return {number}
- */
-
-function cleanup_index(map){
-
-    let count = 0;
-
-    if(is_array(map)){
-        for(let i = 0, arr; i < map.length; i++){
-            (arr = map[i]) &&
-            (count += arr.length);
-        }
-    }
-    else for(const item of map.entries()){
-        const key = item[0];
-        const value = item[1];
-        const tmp = cleanup_index(value);
-        tmp ? count += tmp
-            : map.delete(key);
-    }
-
-    return count;
-}
+// /**
+//  * @param map
+//  * @return {number}
+//  */
+//
+// function cleanup_index(map){
+//
+//     let count = 0;
+//
+//     if(is_array(map)){
+//         for(let i = 0, arr; i < map.length; i++){
+//             (arr = map[i]) &&
+//             (count += arr.length);
+//         }
+//     }
+//     else for(const item of map.entries()){
+//         const key = item[0];
+//         const value = item[1];
+//         const tmp = cleanup_index(value);
+//         tmp ? count += tmp
+//             : map.delete(key);
+//     }
+//
+//     return count;
+// }
 
 Index.prototype.cleanup = function(){
 
@@ -254,9 +252,11 @@ Index.prototype.cleanup = function(){
         return this;
     }
 
-    cleanup_index(this.map);
+    remove_index(this.map);
+    //cleanup_index(this.map);
     this.depth &&
-    cleanup_index(this.ctx);
+    //cleanup_index(this.ctx);
+    remove_index(this.ctx);
 
     return this;
 };
diff --git a/src/index/remove.js b/src/index/remove.js
index 905f76a..7c2c354 100644
--- a/src/index/remove.js
+++ b/src/index/remove.js
@@ -111,35 +111,43 @@ Index.prototype.remove = function(id, _skip_deletion){
 };
 
 /**
+ * When called without passing ID it just will clean up
  * @param {!Map|Array<number|string|Array<number|string>>} map
- * @param {!number|string} id
+ * @param {!number|string=} id
  * @return {number}
  */
 
-function remove_index(map, id){
+export function remove_index(map, id){
 
     // a check counter of filled resolution slots
     // to prevent removing the field
     let count = 0;
+    let cleanup = typeof id === "undefined";
 
     if(is_array(map)){
         for(let x = 0, arr, index; x < map.length; x++){
             if((arr = map[x]) && arr.length){
-                index = arr.indexOf(id);
-                if(index >= 0){
-                    if(arr.length > 1){
-                        arr.splice(index, 1);
-                        count++;
-                    }
-                    else{
-                        // remove resolution slot
-                        delete map[x];
-                    }
-                    // the index key:[res, id] is unique
-                    break;
+                if(cleanup){
+                    //count += arr.length;
+                    count++;
                 }
                 else{
-                    count++;
+                    index = arr.indexOf(id);
+                    if(index >= 0){
+                        if(arr.length > 1){
+                            arr.splice(index, 1);
+                            count++;
+                        }
+                        else{
+                            // remove resolution slot
+                            delete map[x];
+                        }
+                        // the index key:[res, id] is unique
+                        break;
+                    }
+                    else{
+                        count++;
+                    }
                 }
             }
         }
diff --git a/src/index/search.js b/src/index/search.js
index 7283502..d340839 100644
--- a/src/index/search.js
+++ b/src/index/search.js
@@ -88,8 +88,7 @@ Index.prototype.search = function(query, limit, options){
 
     // fast path single term
     if(length === 1){
-        return single_term_query.call(
-            this,
+        return single_term_query.call(this,
             query_terms[0], // term
             "",             // ctx
             limit,
@@ -107,10 +106,9 @@ Index.prototype.search = function(query, limit, options){
 
     // fast path single context
     if(length === 2 && context && !suggest){
-        return single_term_query.call(
-            this,
-            query_terms[0], // term
-            query_terms[1], // ctx
+        return single_term_query.call(this,
+            query_terms[1], // term
+            query_terms[0], // ctx
             limit,
             offset,
             resolve,
diff --git a/src/intersect.js b/src/intersect.js
index 9af00e3..bc7db6e 100644
--- a/src/intersect.js
+++ b/src/intersect.js
@@ -83,11 +83,10 @@ export function intersect(arrays, resolution, limit, offset, suggest, boost, res
                     // fast path early result when limit was set
                     if(!SUPPORT_RESOLVER || resolve){
                         if(limit && (count === length - 1)){
-                            // if(tmp.length - offset > limit){
-                            //     return tmp.slice(offset, limit + offset);
-                            // }
                             if(tmp.length - offset === limit){
-                                return tmp;
+                                return offset
+                                    ? tmp.slice(offset)
+                                    : tmp;
                             }
                         }
                     }
@@ -207,7 +206,7 @@ export function union(arrays, limit, offset, resolve, boost){
                             // adjust score to reduce resolution of suggestions
                             // todo: instead of applying the resolve task directly it could
                             //       be added to the chain and resolved later, that will keep
-                            //       the original score but also can't resolve early because of
+                            //       the original score but also can't resolve early when
                             //       nothing was found
                             let score = (k + (i < arr_len - 1 ? boost || 0 : 0)) / (i + 1) | 0;
                             let arr = result[score] || (result[score] = []);
diff --git a/test/context.js b/test/context.js
index eb8dc48..a8dad3f 100644
--- a/test/context.js
+++ b/test/context.js
@@ -12,7 +12,7 @@ const Charset = _Charset || (await import("../src/charset.js")).default;
 
 describe("Context", function(){
 
-    it("Should have been added properly to the context", function(){
+    it("Should have been added properly to the context (bidirectional enabled)", function(){
 
         let index = new Index({
             tokenize: "strict",
@@ -26,13 +26,20 @@ describe("Context", function(){
         expect(index.reg.size).to.equal(1);
         expect(index.search("zero one")).to.include(0);
         expect(index.search("zero two")).to.include(0);
+        // breaks the context chain:
         expect(index.search("zero three").length).to.equal(0);
+        expect(index.search("zero three", { suggest: true })).to.include(0);
+        // breaks the context chain:
         expect(index.search("three seven").length).to.equal(0);
+        expect(index.search("three seven", { suggest: true })).to.include(0);
         expect(index.search("three five seven")).to.include(0);
+        // bidirectional:
         expect(index.search("eight six four")).to.include(0);
         expect(index.search("seven five three")).to.include(0);
         expect(index.search("three foobar seven").length).to.equal(0);
+        expect(index.search("three foobar seven", { suggest: true })).to.include(0);
         expect(index.search("seven foobar three").length).to.equal(0);
+        expect(index.search("seven foobar three", { suggest: true })).to.include(0);
         expect(index.search("eight ten")).to.include(0);
         expect(index.search("ten nine seven eight six five three four two zero one")).to.include(0);
 
@@ -42,6 +49,7 @@ describe("Context", function(){
         expect(index.search("1 5")).to.include(1);
         expect(index.search("2 4 1")).to.include(1);
 
+        // disable bidirectional
         index = new Index({
             tokenize: "strict",
             context: {
@@ -53,4 +61,41 @@ describe("Context", function(){
         index.add(0, "zero one two three four five six seven eight nine ten");
         expect(index.search("ten nine seven eight six five three four two zero one").length).to.equal(0);
     });
+
+    it("Should have been added properly to the context when bidirectional was disabled", function(){
+
+        let index = new Index({
+            tokenize: "strict",
+            context: {
+                depth: 2,
+                bidirectional: false
+            }
+        });
+
+        index.add(1, "1 2 3 4 5 6 7 8 9");
+        expect(index.search("3 1").length).to.equal(0);
+        expect(index.search("4 3 2").length).to.equal(0);
+    });
+
+    it("Should have been added properly when dupes will break the context chain", function(){
+
+        const index = new Index({
+            context: {
+                depth: 2
+            }
+        });
+
+        index.add(1, "1 2 3 4 5 6 7 8 1 2 9");
+
+        expect(index.search("1 9")).to.include(1);
+        expect(index.search("1 2 9")).to.include(1);
+        expect(index.search("9 1 2")).to.include(1);
+
+        // todo shuffled chain:
+        //expect(index.search("1 3 9")).to.include(1);
+        expect(index.search("3 1 9")).to.include(1);
+        expect(index.search("9 1 3")).to.include(1);
+        // todo shuffled chain:
+        //expect(index.search("9 3 1")).to.include(1);
+    });
 });
diff --git a/test/encoder.js b/test/encoder.js
index 99c3a58..694aa00 100644
--- a/test/encoder.js
+++ b/test/encoder.js
@@ -43,7 +43,7 @@ describe("Encoder: Charset", function(){
 
             const index = new Index({ encoder: Charset.Exact });
             expect(index.encoder.encode("Björn-Phillipp Mayer")).to.eql(
-                ["Björn-Phillipp", "Mayer"]
+                ["Björn", "Phillipp", "Mayer"]
             );
         });
 
diff --git a/test/persistent.js b/test/persistent.js
index 897434f..e12ccdc 100644
--- a/test/persistent.js
+++ b/test/persistent.js
@@ -227,15 +227,31 @@ export default function(DB, DBClass){
         // mount database to the index
         //await db.mount(document);
         //expect(document.index.get("primaryTitle").db).to.be.instanceof(db.constructor);
-        //document.clear();
+        //await document.clear();
 
         // add test data
         for(let i = 0; i < data.length; i++){
             document.add(data[i]);
         }
 
+        expect(document.index.get("primaryTitle").reg.size).to.equal(2);
+        expect(document.index.get("primaryTitle").map.size).to.equal(25);
+        expect(document.index.get("originalTitle").reg.size).to.equal(2);
+        expect(document.index.get("originalTitle").map.size).to.equal(25);
+        // tag pseudo indexes (persistent only)
+        expect(document.index.get("startYear").reg.size).to.equal(2);
+        expect(document.index.get("startYear").map.size).to.equal(0);
+        expect(document.index.get("genres").reg.size).to.equal(2);
+        expect(document.index.get("genres").map.size).to.equal(0);
+        expect(document.reg.size).to.equal(2);
+        expect(document.store.size).to.equal(2);
+        expect(document.tag.size).to.equal(2);
+        expect(document.tag.get("startYear").size).to.equal(2);
+        expect(document.tag.get("genres").size).to.equal(3);
+
         // transfer changes in bulk
         await document.commit();
+        //await new Promise(resolve => setTimeout(resolve, 200));
 
         expect(document.index.get("primaryTitle").reg.size).to.equal(0);
         expect(document.index.get("primaryTitle").map.size).to.equal(0);
diff --git a/test/scoring.js b/test/scoring.js
index 3f2d4d5..8dfa20d 100644
--- a/test/scoring.js
+++ b/test/scoring.js
@@ -42,8 +42,8 @@ describe("Scoring", function(){
 
         expect(index.search("1")).to.eql([0]);
         expect(index.search("one")).to.eql([1, 2]);
-        expect(index.search("one two")).to.eql([2]); // 1: no bi-directional
-        expect(index.search("four one")).to.eql([1]); // 2: no bi-directional
+        expect(index.search("one two")).to.eql([1]); // 2 => no bi-directional
+        expect(index.search("four one")).to.eql([2]); // 1 => no bi-directional
 
         index = new Index({
             tokenize: "strict",