v0.6.2 Improve Suggestion, Improve Coverage, Add Tests

README.md

@@ -13,8 +13,8 @@
 <h1></h1>
 <h3>Web's fastest and most memory-flexible full-text search library with zero dependencies.</h3>
 
-It is time for a quantum leap in full-text searching algorithms. When it comes to raw search speed <a href="https://raw.githack.com/nextapps-de/flexsearch/master/test/benchmark.html" target="_blank">FlexSearch outperforms every single searching library out there</a> and also provides flexible search capabilities like multi-field search, phonetic transformations or partial matching. 
-Depending on the used <a href="#options">options</a> it also provides the <a href="#memory">most memory-efficient index</a>. FlexSearch introduce a new scoring algorithm called <a href="#contextual">"contextual index"</a> based on a high-performance <a href="#dictionary">pre-scored lexical dictionary</a> architecture which actually performs queries up to 100,000 times faster than Apache Lucene.
+When it comes to raw search speed <a href="https://raw.githack.com/nextapps-de/flexsearch/master/test/benchmark.html" target="_blank">FlexSearch outperforms every single searching library out there</a> and also provides flexible search capabilities like multi-field search, phonetic transformations or partial matching. 
+Depending on the used <a href="#options">options</a> it also provides the <a href="#memory">most memory-efficient index</a>. FlexSearch introduce a new scoring algorithm called <a href="#contextual">"contextual index"</a> based on a <a href="#dictionary">pre-scored lexical dictionary</a> architecture which actually performs queries up to 100,000 times faster than other libraries.
 FlexSearch also provides you a non-blocking asynchronous processing model as well as web workers to perform any updates or queries on the index in parallel through dedicated balanced threads. 
 
 FlexSearch Server is available here: <a target="_blank" href="https://github.com/nextapps-de/flexsearch-server">https://github.com/nextapps-de/flexsearch-server</a>.
@@ -45,19 +45,19 @@ Get Latest (Stable Release):
     <tr>
         <td>flexsearch.min.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/master/dist/flexsearch.min.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/8a4c8f849d8f78deed08e2d78c7400c27297deb6/dist/flexsearch.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/8a4c8f849d8f78deed08e2d78c7400c27297deb6/dist/flexsearch.min.js</a></td>
+        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/master/dist/flexsearch.min.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/master/dist/flexsearch.min.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.light.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/master/dist/flexsearch.light.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/8a4c8f849d8f78deed08e2d78c7400c27297deb6/dist/flexsearch.light.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/8a4c8f849d8f78deed08e2d78c7400c27297deb6/dist/flexsearch.light.js</a></td>
+        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/master/dist/flexsearch.light.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/master/dist/flexsearch.light.js</a></td>
     </tr>
     <tr></tr>
     <tr>
         <td>flexsearch.compact.js</td>
         <td><a href="https://github.com/nextapps-de/flexsearch/raw/master/dist/flexsearch.compact.js" target="_blank">Download</a></td>
-        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/8a4c8f849d8f78deed08e2d78c7400c27297deb6/dist/flexsearch.compact.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/8a4c8f849d8f78deed08e2d78c7400c27297deb6/dist/flexsearch.compact.js</a></td>
+        <td><a href="https://rawcdn.githack.com/nextapps-de/flexsearch/master/dist/flexsearch.compact.js" target="_blank">https://rawcdn.githack.com/nextapps-de/flexsearch/master/dist/flexsearch.compact.js</a></td>
     </tr>
     <tr></tr>
     <tr>
@@ -203,8 +203,8 @@ All Features:
     </tr>
     <tr>
         <td>File Size (gzip)</td>
-        <td>5.0 kb</td>
-        <td>3.9 kb</td>
+        <td>6.6 kb</td>
+        <td>4.7 kb</td>
         <td>2.7 kb</td>
     </tr>
 </table>

compile.js

@@ -13,6 +13,8 @@ fs.existsSync("log") || fs.mkdirSync("log");
 
 var flag_str = "";
 var language_out;
+var formatting;
+var compilation_level;
 
 var options = (function(argv){
 
@@ -31,6 +33,14 @@ var options = (function(argv){
 
                 language_out = val;
             }
+            else if(index === "FORMATTING"){
+
+                formatting = val;
+            }
+            else if(index === "COMPILATION_LEVEL"){
+
+                compilation_level = val;
+            }
             else{
 
                 flag_str += " --define='" + index + "=" + val + "'";
@@ -50,6 +60,11 @@ var options = (function(argv){
 
 var parameter = (function(opt){
 
+    if(formatting && !opt["formatting"]){
+
+        opt["formatting"] = formatting;
+    }
+
     var parameter = '';
 
     for(var index in opt){
@@ -63,7 +78,7 @@ var parameter = (function(opt){
     return parameter;
 })({
 
-    compilation_level: "ADVANCED_OPTIMIZATIONS", //"WHITESPACE"
+    compilation_level: compilation_level || "ADVANCED_OPTIMIZATIONS", //"WHITESPACE"
     use_types_for_optimization: true,
     new_type_inf: true,
     jscomp_warning: "newCheckTypes",
@@ -80,7 +95,7 @@ var parameter = (function(opt){
     output_manifest: "log/manifest.log",
     output_module_dependencies: "log/module_dependencies.log",
     property_renaming_report: "log/renaming_report.log"
-    //formatting: "PRETTY_PRINT"
+    //formatting: formatting || "DEFAULT" //"PRETTY_PRINT"
 });
 
 var release = options["RELEASE"];

dist/flexsearch.compact.js

@@ -1,31 +1,31 @@
 /*
- FlexSearch v0.6.1
+ FlexSearch v0.6.2
  Copyright 2019 Nextapps GmbH
  Author: Thomas Wilkerling
  Released under the Apache 2.0 Licence
  https://github.com/nextapps-de/flexsearch
 */
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dist/flexsearch.es5.js

@@ -1,49 +1,49 @@
 /*
- FlexSearch v0.6.1
+ FlexSearch v0.6.2
  Copyright 2019 Nextapps GmbH
  Author: Thomas Wilkerling
  Released under the Apache 2.0 Licence
  https://github.com/nextapps-de/flexsearch
 */
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dist/flexsearch.light.js

@@ -1,19 +1,19 @@
 /*
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+ FlexSearch v0.6.2
  Copyright 2019 Nextapps GmbH
  Author: Thomas Wilkerling
  Released under the Apache 2.0 Licence
  https://github.com/nextapps-de/flexsearch
 */
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dist/flexsearch.min.js

@@ -1,40 +1,41 @@
 /*
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+ FlexSearch v0.6.2
  Copyright 2019 Nextapps GmbH
  Author: Thomas Wilkerling
  Released under the Apache 2.0 Licence
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 */
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dist/flexsearch.node.js

@@ -1,36 +1,36 @@
 /*
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+ FlexSearch v0.6.2
  Copyright 2019 Nextapps GmbH
  Author: Thomas Wilkerling
  Released under the Apache 2.0 Licence
  https://github.com/nextapps-de/flexsearch
 */
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+function(){let a;if(this.a){const b=this.a.keys;a=Array(b.length+1);let c=0;for(;c<b.length;c++){const d=this.a.index[b[c]];a[c]=[d.i,d.h,Object.keys(d.f)]}a[c]=this.g}else a=[this.i,this.h,Object.keys(this.f)];return JSON.stringify(a)};m.prototype.import=function(a){a=JSON.parse(a);const b=u();if(this.a){var c=this.a.keys,d=c.length,e=a[0][2];for(var g=0;g<e.length;g++)b[e[g]]=1;for(e=0;e<d;e++)g=this.a.index[c[e]],g.i=a[e][0],g.h=a[e][1],g.f=b,g.g=a[d];this.g=a[d]}else{c=a[2];for(d=0;d<c.length;d++)b[c[d]]=
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+a);return" "===b?"":b}}(),advanced:function(){const a=[h("ae"),"a",h("ai"),"ei",h("ay"),"ei",h("ey"),"ei",h("oe"),"o",h("ue"),"u",h("ie"),"i",h("sz"),"s",h("zs"),"s",h("sh"),"s",h("ck"),"k",h("cc"),"k",h("dt"),"t",h("ph"),"f",h("pf"),"f",h("ou"),"o",h("uo"),"u"];return function(b,c){if(!b)return b;b=this.simple(b);2<b.length&&(b=K(b,a));c||1<b.length&&(b=U(b));return b}}(),extra:function(){const a=[h("p"),"b",h("z"),"s",h("[cgq]"),"k",h("n"),"m",h("d"),"t",h("[vw]"),"f",h("[aeiouy]"),""];return function(b){if(!b)return b;
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dist/flexsearch.pre.js

@@ -0,0 +1,986 @@
+/*
+ FlexSearch v0.6.2
+ Copyright 2019 Nextapps GmbH
+ Author: Thomas Wilkerling
+ Released under the Apache 2.0 Licence
+ https://github.com/nextapps-de/flexsearch
+*/
+'use strict';
+(function(m, H, I) {
+  let z;
+  (z = I.define) && z.amd ? z([], function() {
+    return H;
+  }) : (z = I.modules) ? z[m.toLowerCase()] = H : "object" === typeof exports ? module.exports = H : I[m] = H;
+})("FlexSearch", function() {
+  function m(a, b) {
+    const c = b ? b.id : a && a.id;
+    this.id = c || 0 === c ? c : aa++;
+    this.init(a, b);
+    z(this, "index", function() {
+      return this.a ? Object.keys(this.a.index[this.a.keys[0]].f) : Object.keys(this.f);
+    });
+    z(this, "length", function() {
+      return this.index.length;
+    });
+  }
+  function H(a, b) {
+    const c = a.length, d = J(b), e = [];
+    for (let g = 0, f = 0; g < c; g++) {
+      const c = a[g];
+      if (d && b(c) || !d && !b[c]) {
+        e[f++] = c;
+      }
+    }
+    return e;
+  }
+  function I(a, b, c, d, e, g, f, k, r, p) {
+    c = V(c, f ? 0 : e, k, g, b, r, p);
+    let q;
+    k && (k = c.page, q = c.next, c = c.result);
+    if (f) {
+      b = this.where(f, null, e, c);
+    } else {
+      b = c;
+      c = this.g;
+      e = b.length;
+      g = Array(e);
+      for (f = 0; f < e; f++) {
+        g[f] = c[b[f]];
+      }
+      b = g;
+    }
+    c = b;
+    d && (J(d) || (y = d.split(":"), 1 < y.length ? d = ba : (y = y[0], d = ca)), c.sort(d));
+    c = L(k, q, c);
+    this.cache && this.j.set(a, c);
+    return c;
+  }
+  function z(a, b, c) {
+    Object.defineProperty(a, b, {get:c});
+  }
+  function h(a) {
+    return new RegExp(a, "g");
+  }
+  function K(a, b) {
+    for (let c = 0; c < b.length; c += 2) {
+      a = a.replace(b[c], b[c + 1]);
+    }
+    return a;
+  }
+  function P(a, b, c, d, e, g, f, k) {
+    if (b[c]) {
+      return b[c];
+    }
+    e = e ? (k - (f || k / 1.5)) * g + (f || k / 1.5) * e : g;
+    b[c] = e;
+    e >= f && (a = a[k - (e + 0.5 >> 0)], a = a[c] || (a[c] = []), a[a.length] = d);
+    return e;
+  }
+  function T(a, b) {
+    if (a) {
+      const c = Object.keys(a);
+      for (let d = 0, e = c.length; d < e; d++) {
+        const e = c[d], f = a[e];
+        if (f) {
+          for (let c = 0, d = f.length; c < d; c++) {
+            if (f[c] === b) {
+              1 === d ? delete a[e] : f.splice(c, 1);
+              break;
+            } else {
+              A(f[c]) && T(f[c], b);
+            }
+          }
+        }
+      }
+    }
+  }
+  function U(a) {
+    let b = "", c = "";
+    var d = "";
+    for (let e = 0; e < a.length; e++) {
+      const g = a[e];
+      if (g !== c) {
+        if (e && "h" === g) {
+          if (d = "a" === d || "e" === d || "i" === d || "o" === d || "u" === d || "y" === d, ("a" === c || "e" === c || "i" === c || "o" === c || "u" === c || "y" === c) && d || " " === c) {
+            b += g;
+          }
+        } else {
+          b += g;
+        }
+      }
+      d = e === a.length - 1 ? "" : a[e + 1];
+      c = g;
+    }
+    return b;
+  }
+  function da(a, b) {
+    a = a.length - b.length;
+    return 0 > a ? 1 : a ? -1 : 0;
+  }
+  function ca(a, b) {
+    a = a[y];
+    b = b[y];
+    return a < b ? -1 : a > b ? 1 : 0;
+  }
+  function ba(a, b) {
+    const c = y.length;
+    for (let d = 0; d < c; d++) {
+      a = a[y[d]], b = b[y[d]];
+    }
+    return a < b ? -1 : a > b ? 1 : 0;
+  }
+  function L(a, b, c) {
+    return a ? {page:a, next:b ? "" + b : null, result:c} : c;
+  }
+  function V(a, b, c, d, e, g, f) {
+    let k, r = [];
+    if (!0 === c) {
+      c = "0";
+      var p = "";
+    } else {
+      p = c && c.split(":");
+    }
+    const q = a.length;
+    if (1 < q) {
+      const R = u();
+      let B = [], M, G;
+      var n = 0, l;
+      let N;
+      var h = !0;
+      let D, E = 0, x, w, y, A;
+      p && (2 === p.length ? (y = p, p = !1) : p = A = parseInt(p[0], 10));
+      if (f) {
+        for (M = u(); n < q; n++) {
+          if ("not" === e[n]) {
+            for (G = a[n], N = G.length, l = 0; l < N; l++) {
+              M["@" + G[l]] = 1;
+            }
+          } else {
+            w = n + 1;
+          }
+        }
+        if (C(w)) {
+          return L(c, k, r);
+        }
+        n = 0;
+      } else {
+        x = F(e) && e;
+      }
+      let z;
+      for (; n < q; n++) {
+        const u = n === (w || q) - 1;
+        if (!x || !n) {
+          if ((l = x || e && e[n]) && "and" !== l) {
+            if ("or" === l) {
+              z = !1;
+            } else {
+              continue;
+            }
+          } else {
+            z = g = !0;
+          }
+        }
+        G = a[n];
+        if (N = G.length) {
+          if (h) {
+            if (D) {
+              var t = D.length;
+              for (l = 0; l < t; l++) {
+                h = D[l];
+                var m = "@" + h;
+                f && M[m] || (R[m] = 1, g || (r[E++] = h));
+              }
+              D = null;
+              h = !1;
+            } else {
+              D = G;
+              continue;
+            }
+          }
+          m = !1;
+          for (l = 0; l < N; l++) {
+            t = G[l];
+            var v = "@" + t;
+            const a = g ? R[v] || 0 : n;
+            if (!(!a && !d || f && M[v] || !g && R[v])) {
+              if (a === n) {
+                if (u) {
+                  if (!A || --A < E) {
+                    if (r[E++] = t, b && E === b) {
+                      return L(c, E + (p || 0), r);
+                    }
+                  }
+                } else {
+                  R[v] = n + 1;
+                }
+                m = !0;
+              } else {
+                d && (v = B[a] || (B[a] = []), v[v.length] = t);
+              }
+            }
+          }
+          if (z && !m && !d) {
+            break;
+          }
+        } else {
+          if (z && !d) {
+            return L(c, k, G);
+          }
+        }
+      }
+      if (D) {
+        if (n = D.length, f) {
+          for (l = p ? parseInt(p, 10) : 0; l < n; l++) {
+            a = D[l], M["@" + a] || (r[E++] = a);
+          }
+        } else {
+          r = D;
+        }
+      }
+      if (d) {
+        for (E = r.length, y ? (n = parseInt(y[0], 10) + 1, l = parseInt(y[1], 10) + 1) : (n = B.length, l = 0); n--;) {
+          if (t = B[n]) {
+            for (N = t.length; l < N; l++) {
+              if (d = t[l], !f || !M["@" + d]) {
+                if (r[E++] = d, b && E === b) {
+                  return L(c, n + ":" + l, r);
+                }
+              }
+            }
+            l = 0;
+          }
+        }
+      }
+    } else {
+      !q || e && "not" === e[0] || (r = a[0], p && (p = parseInt(p[0], 10)));
+    }
+    b && (f = r.length, p && p > f && (p = 0), p = p || 0, k = p + b, k < f ? r = r.slice(p, k) : (k = 0, p && (r = r.slice(p))));
+    return L(c, k, r);
+  }
+  function F(a) {
+    return "string" === typeof a;
+  }
+  function x(a) {
+    return a.constructor === Array;
+  }
+  function J(a) {
+    return "function" === typeof a;
+  }
+  function A(a) {
+    return "object" === typeof a;
+  }
+  function C(a) {
+    return "undefined" === typeof a;
+  }
+  function W(a) {
+    const b = Array(a);
+    for (let c = 0; c < a; c++) {
+      b[c] = u();
+    }
+    return b;
+  }
+  function u() {
+    return Object.create(null);
+  }
+  const w = {encode:"icase", c:"forward", split:/\W+/, cache:!1, async:!1, C:!1, v:!1, a:!1, b:9, threshold:0, depth:0}, X = {memory:{encode:"extra", c:"strict", threshold:0, b:1}, speed:{encode:"icase", c:"strict", threshold:1, b:3, depth:2}, match:{encode:"extra", c:"full", threshold:1, b:3}, score:{encode:"extra", c:"strict", threshold:1, b:9, depth:4}, balance:{encode:"balance", c:"strict", threshold:0, b:3, depth:3}, fast:{encode:"icase", c:"strict", threshold:8, b:9, depth:1}}, S = [];
+  let aa = 0;
+  const Y = {}, Z = {};
+  m.create = function(a, b) {
+    return new m(a, b);
+  };
+  m.registerMatcher = function(a) {
+    for (const b in a) {
+      a.hasOwnProperty(b) && S.push(h(b), a[b]);
+    }
+    return this;
+  };
+  m.registerEncoder = function(a, b) {
+    O[a] = b.bind(O);
+    return this;
+  };
+  m.registerLanguage = function(a, b) {
+    Y[a] = b.filter;
+    Z[a] = b.stemmer;
+    return this;
+  };
+  m.encode = function(a, b) {
+    return O[a](b);
+  };
+  m.prototype.init = function(a, b) {
+    this.m = [];
+    if (b) {
+      var c = b.preset;
+      a = b;
+    } else {
+      a || (a = w), c = a.preset;
+    }
+    b = {};
+    F(a) ? (b = X[a], a = {}) : c && (b = X[c]);
+    this.c = a.tokenize || b.c || this.c || w.c;
+    this.split = a.split || this.split || w.split;
+    this.v = a.rtl || this.v || w.v;
+    this.async = "undefined" === typeof Promise || C(c = a.async) ? this.async || w.async : c;
+    this.threshold = C(c = a.threshold) ? b.threshold || this.threshold || w.threshold : c;
+    this.b = C(c = a.resolution) ? c = b.b || this.b || w.b : c;
+    c <= this.threshold && (this.b = this.threshold + 1);
+    this.depth = "strict" !== this.c || C(c = a.depth) ? b.depth || this.depth || w.depth : c;
+    this.o = (c = C(c = a.encode) ? b.encode || w.encode : c) && O[c] && O[c].bind(O) || (J(c) ? c : this.o || !1);
+    (c = a.matcher) && this.addMatcher(c);
+    if (c = (b = a.lang) || a.filter) {
+      F(c) && (c = Y[c]);
+      if (x(c)) {
+        var d = this.o, e = u();
+        for (var g = 0; g < c.length; g++) {
+          var f = d ? d(c[g]) : c[g];
+          e[f] = 1;
+        }
+        c = e;
+      }
+      this.filter = c;
+    }
+    if (c = b || a.stemmer) {
+      var k;
+      b = F(c) ? Z[c] : c;
+      d = this.o;
+      e = [];
+      for (k in b) {
+        b.hasOwnProperty(k) && (g = d ? d(k) : k, e.push(h(g + "($|\\W)"), d ? d(b[k]) : b[k]));
+      }
+      this.stemmer = k = e;
+    }
+    this.a = e = (c = a.doc) ? c : this.a || w.a;
+    this.i = W(this.b - (this.threshold || 0));
+    this.h = u();
+    this.f = u();
+    if (e) {
+      this.g = u();
+      a.doc = null;
+      k = e.index = {};
+      b = e.keys = [];
+      d = e.field;
+      g = e.tag;
+      x(e.id) || (e.id = e.id.split(":"));
+      if (g) {
+        this.w = u();
+        f = u();
+        if (d) {
+          if (F(d)) {
+            f[d] = a;
+          } else {
+            if (x(d)) {
+              for (let b = 0; b < d.length; b++) {
+                f[d[b]] = a;
+              }
+            } else {
+              A(d) && (f = d);
+            }
+          }
+        }
+        x(g) || (e.tag = g = [g]);
+        for (d = 0; d < g.length; d++) {
+          this.w[g[d]] = u();
+        }
+        this.B = g;
+        d = f;
+      }
+      if (d) {
+        let c;
+        x(d) || (A(d) ? (c = d, e.field = d = Object.keys(d)) : e.field = d = [d]);
+        for (e = 0; e < d.length; e++) {
+          g = d[e], x(g) || (c && (a = c[g]), b[e] = g, d[e] = g.split(":")), k[g] = new m(a), k[g].g = this.g;
+        }
+      }
+    }
+    this.u = !0;
+    this.j = (this.cache = c = C(c = a.cache) ? this.cache || w.cache : c) ? new ea(c) : !1;
+    return this;
+  };
+  m.prototype.encode = function(a) {
+    a && S.length && (a = K(a, S));
+    a && this.m.length && (a = K(a, this.m));
+    a && this.o && (a = this.o(a));
+    a && this.stemmer && (a = K(a, this.stemmer));
+    return a;
+  };
+  m.prototype.addMatcher = function(a) {
+    const b = this.m;
+    for (const c in a) {
+      a.hasOwnProperty(c) && b.push(h(c), a[c]);
+    }
+    return this;
+  };
+  m.prototype.add = function(a, b, c, d, e) {
+    if (this.a && A(a)) {
+      return this.s("add", a, b);
+    }
+    if (b && F(b) && (a || 0 === a)) {
+      var g = "@" + a;
+      if (this.f[g] && !d) {
+        return this.update(a, b);
+      }
+      if (!e) {
+        if (this.async) {
+          let e = this;
+          g = new Promise(function(c) {
+            setTimeout(function() {
+              e.add(a, b, null, d, !0);
+              e = null;
+              c();
+            });
+          });
+          if (c) {
+            g.then(c);
+          } else {
+            return g;
+          }
+          return this;
+        }
+        if (c) {
+          return this.add(a, b, null, d, !0), c(), this;
+        }
+      }
+      b = this.encode(b);
+      if (!b.length) {
+        return this;
+      }
+      c = this.c;
+      e = J(c) ? c(b) : b.split(this.split);
+      this.filter && (e = H(e, this.filter));
+      const n = u();
+      n._ctx = u();
+      const l = e.length, h = this.threshold, t = this.depth, m = this.b, v = this.i, Q = this.v;
+      for (let b = 0; b < l; b++) {
+        var f = e[b];
+        if (f) {
+          var k = f.length, r = (Q ? b + 1 : l - b) / l, p = "";
+          switch(c) {
+            case "reverse":
+            case "both":
+              for (var q = k; --q;) {
+                p = f[q] + p, P(v, n, p, a, Q ? 1 : (k - q) / k, r, h, m - 1);
+              }
+              p = "";
+            case "forward":
+              for (q = 0; q < k; q++) {
+                p += f[q], P(v, n, p, a, Q ? (q + 1) / k : 1, r, h, m - 1);
+              }
+              break;
+            case "full":
+              for (q = 0; q < k; q++) {
+                const b = (Q ? q + 1 : k - q) / k;
+                for (let c = k; c > q; c--) {
+                  p = f.substring(q, c), P(v, n, p, a, b, r, h, m - 1);
+                }
+              }
+              break;
+            default:
+              if (k = P(v, n, f, a, 1, r, h, m - 1), t && 1 < l && k >= h) {
+                for (k = n._ctx[f] || (n._ctx[f] = u()), f = this.h[f] || (this.h[f] = W(m - (h || 0))), r = b - t, p = b + t + 1, 0 > r && (r = 0), p > l && (p = l); r < p; r++) {
+                  r !== b && P(f, k, e[r], a, 0, m - (r < b ? b - r : r - b), h, m - 1);
+                }
+              }
+          }
+        }
+      }
+      this.f[g] = 1;
+      this.u = !1;
+    }
+    return this;
+  };
+  m.prototype.s = function(a, b, c) {
+    if (x(b)) {
+      for (let d = 0, e = b.length; d < e; d++) {
+        if (d === e - 1) {
+          return this.s(a, b[d], c);
+        }
+        this.s(a, b[d]);
+      }
+    } else {
+      const h = this.a.index, p = this.a.keys;
+      var d = this.a.tag, e = this.a.id;
+      let q;
+      let n;
+      for (var g = 0; g < e.length; g++) {
+        q = (q || b)[e[g]];
+      }
+      if (d) {
+        for (e = 0; e < d.length; e++) {
+          var f = d[e];
+          var k = f.split(":");
+          for (g = 0; g < k.length; g++) {
+            n = (n || b)[k[g]];
+          }
+          n = "@" + n;
+        }
+        k = this.w[f];
+        k = k[n] || (k[n] = []);
+      }
+      if ("remove" === a) {
+        delete this.g[q];
+        for (let b = 0, a = p.length; b < a; b++) {
+          if (b === a - 1) {
+            return h[p[b]].remove(q, c), this;
+          }
+          h[p[b]].remove(q);
+        }
+      }
+      e = this.a.field;
+      k && (k[k.length] = b);
+      this.g[q] = b;
+      for (let g = 0, k = e.length; g < k; g++) {
+        d = e[g];
+        let l;
+        for (f = 0; f < d.length; f++) {
+          l = (l || b)[d[f]];
+        }
+        d = h[p[g]];
+        f = "add" === a ? d.add : d.update;
+        g === k - 1 ? f.call(d, q, l, c) : f.call(d, q, l);
+      }
+    }
+    return this;
+  };
+  m.prototype.update = function(a, b, c) {
+    if (this.a && A(a)) {
+      return this.s("update", a, b);
+    }
+    this.f["@" + a] && F(b) && (this.remove(a), this.add(a, b, c, !0));
+    return this;
+  };
+  m.prototype.remove = function(a, b, c) {
+    if (this.a && A(a)) {
+      return this.s("remove", a, b);
+    }
+    var d = "@" + a;
+    if (this.f[d]) {
+      if (!c) {
+        if (this.async && "function" !== typeof importScripts) {
+          let c = this;
+          d = new Promise(function(b) {
+            setTimeout(function() {
+              c.remove(a, null, !0);
+              c = null;
+              b();
+            });
+          });
+          if (b) {
+            d.then(b);
+          } else {
+            return d;
+          }
+          return this;
+        }
+        if (b) {
+          return this.remove(a, null, !0), b(), this;
+        }
+      }
+      for (b = 0; b < this.b - (this.threshold || 0); b++) {
+        T(this.i[b], a);
+      }
+      this.depth && T(this.h, a);
+      delete this.f[d];
+      this.u = !1;
+    }
+    return this;
+  };
+  let y;
+  m.prototype.search = function(a, b, c, d) {
+    if (A(b)) {
+      if (x(b)) {
+        for (var e = 0; e < b.length; e++) {
+          b[e].query = a;
+        }
+      } else {
+        b.query = a;
+      }
+      a = b;
+      b = 1000;
+    } else {
+      b && J(b) ? (c = b, b = 1000) : b || 0 === b || (b = 1000);
+    }
+    let g = [], f = a;
+    let k, h, p;
+    if (A(a) && !x(a)) {
+      c || (c = a.callback) && (f.callback = null);
+      h = a.sort;
+      k = a.page;
+      b = a.limit;
+      var q = a.threshold;
+      p = a.suggest;
+      a = a.query;
+    }
+    if (this.a) {
+      q = this.a.index;
+      const r = f.where;
+      var n = f.bool || "or", l = f.field;
+      let B = n;
+      let v, u;
+      if (l) {
+        x(l) || (l = [l]);
+      } else {
+        if (x(f)) {
+          var m = f;
+          l = [];
+          B = [];
+          for (var t = 0; t < f.length; t++) {
+            d = f[t], e = d.bool || n, l[t] = d.field, B[t] = e, "not" === e ? v = !0 : "and" === e && (u = !0);
+          }
+        } else {
+          l = this.a.keys;
+        }
+      }
+      n = l.length;
+      for (t = 0; t < n; t++) {
+        m && (f = m[t]), k && !F(f) && (f.page = null, f.limit = 0), g[t] = q[l[t]].search(f, 0);
+      }
+      if (c) {
+        return c(I.call(this, a, B, g, h, b, p, r, k, u, v));
+      }
+      if (this.async) {
+        const c = this;
+        return new Promise(function(d) {
+          Promise.all(g).then(function(e) {
+            d(I.call(c, a, B, e, h, b, p, r, k, u, v));
+          });
+        });
+      }
+      return I.call(this, a, B, g, h, b, p, r, k, u, v);
+    }
+    q || (q = this.threshold || 0);
+    if (!d) {
+      if (this.async && "function" !== typeof importScripts) {
+        let a = this;
+        q = new Promise(function(c) {
+          setTimeout(function() {
+            c(a.search(f, b, null, !0));
+            a = null;
+          });
+        });
+        if (c) {
+          q.then(c);
+        } else {
+          return q;
+        }
+        return this;
+      }
+      if (c) {
+        return c(this.search(f, b, null, !0)), this;
+      }
+    }
+    if (!a || !F(a)) {
+      return g;
+    }
+    f = a;
+    if (this.cache) {
+      if (this.u) {
+        if (c = this.j.get(a)) {
+          return c;
+        }
+      } else {
+        this.j.clear(), this.u = !0;
+      }
+    }
+    f = this.encode(f);
+    if (!f.length) {
+      return g;
+    }
+    c = this.c;
+    c = J(c) ? c(f) : f.split(this.split);
+    this.filter && (c = H(c, this.filter));
+    m = c.length;
+    d = !0;
+    e = [];
+    const w = u();
+    let v = 0;
+    1 < m && (this.depth && "strict" === this.c ? n = !0 : c.sort(da));
+    if (!n || (t = this.h)) {
+      const b = this.b;
+      for (; v < m; v++) {
+        let a = c[v];
+        if (a) {
+          if (n) {
+            if (!l) {
+              if (t[a]) {
+                l = a, w[a] = 1;
+              } else {
+                if (!p) {
+                  return g;
+                }
+              }
+            }
+            if (p && v === m - 1 && !e.length) {
+              n = !1, a = l || a, w[a] = 0;
+            } else {
+              if (!l) {
+                continue;
+              }
+            }
+          }
+          if (!w[a]) {
+            const c = [];
+            let f = !1, g = 0;
+            const k = n ? t[l] : this.i;
+            if (k) {
+              let d;
+              for (let e = 0; e < b - q; e++) {
+                if (d = k[e][a]) {
+                  c[g++] = d, f = !0;
+                }
+              }
+            }
+            if (f) {
+              l = a, e[e.length] = 1 < g ? c.concat.apply([], c) : c[0];
+            } else {
+              if (!p) {
+                d = !1;
+                break;
+              }
+            }
+            w[a] = 1;
+          }
+        }
+      }
+    } else {
+      d = !1;
+    }
+    d && (g = V(e, b, k, p));
+    this.cache && this.j.set(a, g);
+    return g;
+  };
+  m.prototype.find = function(a, b) {
+    return this.where(a, b, 1)[0] || null;
+  };
+  m.prototype.where = function(a, b, c, d) {
+    const e = this.g, g = [];
+    let f = 0;
+    let k;
+    var h;
+    let p;
+    if (A(a)) {
+      c || (c = b);
+      var q = Object.keys(a);
+      var n = q.length;
+      k = !1;
+      if (1 === n && "id" === q[0]) {
+        return [e[a.id]];
+      }
+      if ((h = this.B) && !d) {
+        for (var l = 0; l < h.length; l++) {
+          var m = h[l], t = a[m];
+          if (!C(t)) {
+            p = this.w[m]["@" + t];
+            if (0 === --n) {
+              return p;
+            }
+            q.splice(q.indexOf(m), 1);
+            delete a[m];
+            break;
+          }
+        }
+      }
+      h = Array(n);
+      for (l = 0; l < n; l++) {
+        h[l] = q[l].split(":");
+      }
+    } else {
+      if (J(a)) {
+        b = d || Object.keys(e);
+        c = b.length;
+        for (q = 0; q < c; q++) {
+          n = e[b[q]], a(n) && (g[f++] = n);
+        }
+        return g;
+      }
+      if (C(b)) {
+        return [e[a]];
+      }
+      if ("id" === a) {
+        return [e[b]];
+      }
+      q = [a];
+      n = 1;
+      h = [a.split(":")];
+      k = !0;
+    }
+    d = p || d || Object.keys(e);
+    l = d.length;
+    for (m = 0; m < l; m++) {
+      t = p ? d[m] : e[d[m]];
+      let l = !0;
+      for (let c = 0; c < n; c++) {
+        k || (b = a[q[c]]);
+        const d = h[c], e = d.length;
+        let f = t;
+        if (1 < e) {
+          for (let a = 0; a < e; a++) {
+            f = f[d[a]];
+          }
+        } else {
+          f = f[d[0]];
+        }
+        if (f !== b) {
+          l = !1;
+          break;
+        }
+      }
+      if (l && (g[f++] = t, c && f === c)) {
+        break;
+      }
+    }
+    return g;
+  };
+  m.prototype.info = function() {
+    return {id:this.id, items:this.length, cache:this.cache && this.cache.l ? this.cache.l.length : !1, matcher:S.length + (this.m ? this.m.length : 0), worker:this.C, threshold:this.threshold, depth:this.depth, resolution:this.b, contextual:this.depth && "strict" === this.c};
+  };
+  m.prototype.clear = function() {
+    return this.destroy().init();
+  };
+  m.prototype.destroy = function() {
+    this.cache && (this.j.clear(), this.j = null);
+    this.i = this.h = this.f = null;
+    if (this.a) {
+      const a = this.a.keys;
+      for (let b = 0; b < a.length; b++) {
+        this.a.index[a[b]].destroy();
+      }
+      this.a = this.g = null;
+    }
+    return this;
+  };
+  m.prototype.export = function() {
+    let a;
+    if (this.a) {
+      const b = this.a.keys;
+      a = Array(b.length + 1);
+      let c = 0;
+      for (; c < b.length; c++) {
+        const d = this.a.index[b[c]];
+        a[c] = [d.i, d.h, Object.keys(d.f)];
+      }
+      a[c] = this.g;
+    } else {
+      a = [this.i, this.h, Object.keys(this.f)];
+    }
+    return JSON.stringify(a);
+  };
+  m.prototype.import = function(a) {
+    a = JSON.parse(a);
+    const b = u();
+    if (this.a) {
+      var c = this.a.keys, d = c.length, e = a[0][2];
+      for (var g = 0; g < e.length; g++) {
+        b[e[g]] = 1;
+      }
+      for (e = 0; e < d; e++) {
+        g = this.a.index[c[e]], g.i = a[e][0], g.h = a[e][1], g.f = b, g.g = a[d];
+      }
+      this.g = a[d];
+    } else {
+      c = a[2];
+      for (d = 0; d < c.length; d++) {
+        b[c[d]] = 1;
+      }
+      this.i = a[0];
+      this.h = a[1];
+      this.f = b;
+    }
+  };
+  const O = {icase:function(a) {
+    return a.toLowerCase();
+  }, simple:function() {
+    const a = [h("[\u00e0\u00e1\u00e2\u00e3\u00e4\u00e5]"), "a", h("[\u00e8\u00e9\u00ea\u00eb]"), "e", h("[\u00ec\u00ed\u00ee\u00ef]"), "i", h("[\u00f2\u00f3\u00f4\u00f5\u00f6\u0151]"), "o", h("[\u00f9\u00fa\u00fb\u00fc\u0171]"), "u", h("[\u00fd\u0177\u00ff]"), "y", h("\u00f1"), "n", h("\u00e7"), "c", h("\u00df"), "s", h(" & "), " and ", h("[-/]"), " ", h("[^a-z0-9 ]"), "", h("\\s+"), " "];
+    return function(b) {
+      b = K(b.toLowerCase(), a);
+      return " " === b ? "" : b;
+    };
+  }(), advanced:function() {
+    const a = [h("ae"), "a", h("ai"), "ei", h("ay"), "ei", h("ey"), "ei", h("oe"), "o", h("ue"), "u", h("ie"), "i", h("sz"), "s", h("zs"), "s", h("sh"), "s", h("ck"), "k", h("cc"), "k", h("dt"), "t", h("ph"), "f", h("pf"), "f", h("ou"), "o", h("uo"), "u"];
+    return function(b, c) {
+      if (!b) {
+        return b;
+      }
+      b = this.simple(b);
+      2 < b.length && (b = K(b, a));
+      c || 1 < b.length && (b = U(b));
+      return b;
+    };
+  }(), extra:function() {
+    const a = [h("p"), "b", h("z"), "s", h("[cgq]"), "k", h("n"), "m", h("d"), "t", h("[vw]"), "f", h("[aeiouy]"), ""];
+    return function(b) {
+      if (!b) {
+        return b;
+      }
+      b = this.advanced(b, !0);
+      if (1 < b.length) {
+        b = b.split(" ");
+        for (let c = 0; c < b.length; c++) {
+          const d = b[c];
+          1 < d.length && (b[c] = d[0] + K(d.substring(1), a));
+        }
+        b = b.join(" ");
+        b = U(b);
+      }
+      return b;
+    };
+  }(), balance:function() {
+    const a = [h("[-/]"), " ", h("[^a-z0-9 ]"), "", h("\\s+"), " "];
+    return function(b) {
+      return U(K(b.toLowerCase(), a));
+    };
+  }()}, ea = function() {
+    function a(a) {
+      this.clear();
+      this.A = !0 !== a && a;
+    }
+    a.prototype.clear = function() {
+      this.cache = u();
+      this.count = u();
+      this.index = u();
+      this.l = [];
+    };
+    a.prototype.set = function(a, c) {
+      if (this.A && C(this.cache[a])) {
+        let b = this.l.length;
+        if (b === this.A) {
+          b--;
+          const a = this.l[b];
+          delete this.cache[a];
+          delete this.count[a];
+          delete this.index[a];
+        }
+        this.index[a] = b;
+        this.l[b] = a;
+        this.count[a] = -1;
+        this.cache[a] = c;
+        this.get(a);
+      } else {
+        this.cache[a] = c;
+      }
+    };
+    a.prototype.get = function(a) {
+      const b = this.cache[a];
+      if (this.A && b) {
+        var d = ++this.count[a];
+        const b = this.index;
+        let c = b[a];
+        if (0 < c) {
+          const f = this.l;
+          for (var e = c; this.count[f[--c]] <= d && -1 !== c;) {
+          }
+          c++;
+          if (c !== e) {
+            for (d = e; d > c; d--) {
+              e = f[d - 1], f[d] = e, b[e] = d;
+            }
+            f[c] = a;
+            b[a] = c;
+          }
+        }
+      }
+      return b;
+    };
+    return a;
+  }();
+  return m;
+}(!1), this);
+

flexsearch.js

@@ -1,5 +1,5 @@
 /**!
- * @preserve FlexSearch v0.6.1
+ * @preserve FlexSearch v0.6.2
  * Copyright 2019 Nextapps GmbH
  * Author: Thomas Wilkerling
  * Released under the Apache 2.0 Licence
@@ -191,12 +191,13 @@
 
         /**
          * @param {Object<string, number|string|boolean|Object|function(string):string>=} options
+         * @param {Object<string, number|string|boolean>=} settings
          * @export
          */
 
-        FlexSearch.create = function(options){
+        FlexSearch.create = function(options, settings){
 
-            return new FlexSearch(options);
+            return new FlexSearch(options, settings);
         };
 
         /**
@@ -495,20 +496,6 @@
             );
             */
 
-            // if(SUPPORT_SUGGESTION){
-            //
-            //     /** @private */
-            //     this.suggest = (
-            //
-            //         is_undefined(custom = options["suggest"]) ?
-            //
-            //             this.suggest ||
-            //             defaults.suggest
-            //         :
-            //             custom
-            //     );
-            // }
-
             custom = is_undefined(custom = options["encode"]) ?
 
                 preset.encode ||
@@ -532,7 +519,9 @@
                 );
             }
 
-            if((custom = options["filter"])) {
+            const lang = options["lang"];
+
+            if((custom = lang || options["filter"])) {
 
                 if(is_string(custom)){
 
@@ -548,7 +537,7 @@
                 this.filter = custom;
             }
 
-            if((custom = options["stemmer"])) {
+            if((custom = lang || options["stemmer"])) {
 
                 /** @private */
                 this.stemmer = init_stemmer(
@@ -860,7 +849,7 @@
 
                 if(!_recall){
 
-                    if(SUPPORT_ASYNC && this.async && (typeof importScripts !== "function")){
+                    if(SUPPORT_ASYNC && this.async && (!SUPPORT_WORKER || (typeof importScripts !== "function"))){
 
                         let self = this;
 
@@ -1171,7 +1160,8 @@
 
                             if(z === length - 1){
 
-                                return index[keys[z]].remove(id, callback);
+                                index[keys[z]].remove(id, callback);
+                                return this;
                             }
                             else{
 
@@ -1214,7 +1204,7 @@
 
                         if(i === len - 1){
 
-                            return fn.call(self, id, content, callback);
+                            fn.call(self, id, content, callback);
                         }
                         else{
 
@@ -1222,6 +1212,8 @@
                         }
                     }
                 }
+
+                return this;
             };
         }
 
@@ -1474,7 +1466,16 @@
                 }
 
                 query = /** @type {Object} */ (limit);
-                limit = 0;
+                limit = 1000;
+            }
+            else if(limit && is_function(limit)){
+
+                callback = /** @type {?Function} */ (limit);
+                limit = 1000;
+            }
+            else{
+
+                limit || (limit === 0 ) || (limit = 1000);
             }
 
             let result = [];
@@ -1490,11 +1491,14 @@
 
                 if(SUPPORT_ASYNC){
 
-                    callback = query["callback"] || (is_function(limit) && /** @type {?Function} */ (limit));
+                    if(!callback){
 
-                    if(callback) {
+                        callback = query["callback"];
 
-                        _query["callback"] = null;
+                        if(callback){
+
+                            _query["callback"] = null;
+                        }
                     }
                 }
 
@@ -1636,16 +1640,6 @@
 
             threshold || (threshold = this.threshold || 0);
 
-            if(is_function(limit)){
-
-                callback = limit;
-                limit = 1000;
-            }
-            else {
-
-                limit || (limit === 0 ) || (limit = 1000);
-            }
-
             if(SUPPORT_WORKER && this.worker){
 
                 this._current_callback = callback;
@@ -1781,14 +1775,13 @@
 
             let ctx_root;
             let use_contextual;
+            let a = 0;
 
             if(length > 1){
 
-                if(this.depth){
+                if(this.depth && (this.tokenize === "strict")){
 
                     use_contextual = true;
-                    ctx_root = words[0]; // TODO: iterate roots
-                    check_words[ctx_root] = 1;
                 }
                 else{
 
@@ -1827,7 +1820,7 @@
 
             let ctx_map;
 
-            if(!use_contextual || (ctx_map = this._ctx)[ctx_root]){
+            if(!use_contextual || (ctx_map = this._ctx)){
 
                 const resolution = this.resolution;
 
@@ -1837,12 +1830,41 @@
                 //     threshold = (threshold || 1) / boost;
                 // }
 
-                for(let a = (use_contextual ? 1 : 0); a < length; a++){
+                for(; a < length; a++){
 
-                    const value = words[a];
+                    let value = words[a];
 
                     if(value){
 
+                        if(use_contextual){
+
+                            if(!ctx_root){
+
+                                if(ctx_map[value]){
+
+                                    ctx_root = value;
+                                    check_words[value] = 1;
+                                }
+                                else if(!suggest){
+
+                                    return result;
+                                }
+                            }
+
+                            if(suggest && (a === length - 1) && !check.length){
+
+                                // fall back to single-term-strategy
+
+                                use_contextual = false;
+                                value = ctx_root || value;
+                                check_words[value] = 0;
+                            }
+                            else if(!ctx_root){
+
+                                continue;
+                            }
+                        }
+
                         if(!check_words[value]){
 
                             const map_check = [];
@@ -1871,7 +1893,10 @@
 
                             if(map_found){
 
+                                ctx_root = value;
+
                                 // not handled by intersection:
+
                                 check[check.length] = (
 
                                     count > 1 ?
@@ -1882,7 +1907,7 @@
                                 );
 
                                 // handled by intersection:
-                                //check[check.length] = map_check;
+                                // check[check.length] = map_check;
                             }
                             else if(!SUPPORT_SUGGESTION || !suggest){
 
@@ -1892,8 +1917,6 @@
 
                             check_words[value] = 1;
                         }
-
-                        ctx_root = value;
                     }
                 }
             }
@@ -1902,24 +1925,21 @@
                 found = false;
             }
 
-            //if(!SUPPORT_DOCUMENT || !this.doc){
+            if(found){
 
-                if(found){
+                // Not handled by intersection:
+                result = /** @type {Array} */ (intersect(check, limit, cursor, SUPPORT_SUGGESTION && suggest));
 
-                    // Not handled by intersection:
-                    result = /** @type {Array} */ (intersect(check, limit, cursor, SUPPORT_SUGGESTION && suggest));
+                // Handled by intersection:
+                //result = intersect_3d(check, limit, suggest);
+            }
 
-                    // Handled by intersection:
-                    //result = intersect_3d(check, limit, suggest);
-                }
+            // store result to cache
 
-                // store result to cache
+            if(SUPPORT_CACHE && this.cache){
 
-                if(SUPPORT_CACHE && this.cache){
-
-                    this._cache.set(query, result);
-                }
-            //}
+                this._cache.set(query, result);
+            }
 
             if(PROFILER){
 
@@ -1959,6 +1979,7 @@
                 let keys_len;
                 let has_value;
                 let tree;
+                let tag_results;
 
                 if(is_object(key)){
 
@@ -1983,12 +2004,12 @@
 
                             if(!is_undefined(current_where)){
 
-                                result = this._tag[current_tag]["@" + current_where];
+                                tag_results = this._tag[current_tag]["@" + current_where];
                                 //result = result.slice(0, limit && (limit < result.length) ? limit : result.length);
 
                                 if(--keys_len === 0){
 
-                                    return result;
+                                    return tag_results;
                                 }
 
                                 keys.splice(keys.indexOf(current_tag), 1);
@@ -2042,12 +2063,12 @@
                     has_value = true;
                 }
 
-                const ids = result || get_keys(doc); // this._ids;
+                const ids = tag_results || result || get_keys(doc); // this._ids;
                 const length = ids.length;
 
                 for(let x = 0; x < length; x++){
 
-                    const obj = doc[ids[x]];
+                    const obj = tag_results ? ids[x] : doc[ids[x]];
                     let found = true;
 
                     for(let i = 0; i < keys_len; i++){
@@ -2214,11 +2235,14 @@
 
             FlexSearch.prototype.export = function(){
 
+                let payload;
+
                 if(SUPPORT_DOCUMENT && this.doc){
 
                     const keys = this.doc.keys;
                     const length = keys.length;
-                    const payload = new Array(length + 1);
+
+                    payload = new Array(length + 1);
 
                     let i = 0;
 
@@ -2233,16 +2257,18 @@
                     }
 
                     payload[i] = this._doc;
+                }
+                else{
 
-                    return JSON.stringify(payload);
+                    payload = [
+
+                        this._map,
+                        this._ctx,
+                        get_keys(this._ids)
+                    ];
                 }
 
-                return JSON.stringify([
-
-                    this._map,
-                    this._ctx,
-                    get_keys(this._ids)
-                ]);
+                return JSON.stringify(payload);
             };
 
             /**
@@ -3161,7 +3187,6 @@
             let page;
             let result = [];
             let pointer;
-            const length_z = arrays.length;
 
             if(cursor === true){
 
@@ -3173,6 +3198,8 @@
                 pointer = cursor && cursor.split(":");
             }
 
+            const length_z = arrays.length;
+
             // use complex handler when length > 1
 
             if(length_z > 1){
@@ -3182,11 +3209,11 @@
                 //arrays.sort(sort_by_length_down);
 
                 const check = create_object();
+                const suggestions = [];
 
-                let suggestions = [];
                 let check_not;
                 let arr;
-                let z = -1; // start from 0
+                let z = 0;
                 let i = 0;
                 let length;
                 let tmp;
@@ -3197,6 +3224,7 @@
                 let last_index;
 
                 let pointer_suggest;
+                let pointer_count;
 
                 if(pointer){
 
@@ -3207,7 +3235,7 @@
                     }
                     else{
 
-                        pointer = parseInt(pointer[0], 10);
+                        pointer = pointer_count = parseInt(pointer[0], 10);
                     }
                 }
 
@@ -3220,17 +3248,16 @@
 
                         check_not = create_object();
 
-                        while(++z < length_z){
+                        for(; z < length_z; z++){
 
                             if(bool[z] === "not"){
 
                                 arr = arrays[z];
                                 length = arr.length;
-                                i = 0;
 
-                                while(i < length){
+                                for(i = 0; i < length; i++){
 
-                                    check_not["@" + arr[i++]] = 1;
+                                    check_not["@" + arr[i]] = 1;
                                 }
                             }
                             else{
@@ -3250,7 +3277,7 @@
                             return create_page(cursor, page, result);
                         }
 
-                        z = -1;
+                        z = 0;
                     }
                     else{
 
@@ -3263,7 +3290,7 @@
 
                 // loop through arrays
 
-                while(++z < length_z){
+                for(; z < length_z; z++){
 
                     const is_final_loop = (
 
@@ -3322,13 +3349,11 @@
 
                             const result_length = first_result.length;
 
-                            i = 0;
-
                             // fill initial map
 
-                            while(i < result_length){
+                            for(i = 0; i < result_length; i++){
 
-                                const id = first_result[i++];
+                                const id = first_result[i];
                                 const index = "@" + id;
 
                                 // there is no and, add items
@@ -3359,17 +3384,14 @@
 
                     let found = false;
 
-                    i = 0;
-                    //suggestions = [];
+                    for(i = 0; i < length; i++){
 
-                    while(i < length){
-
-                        tmp = arr[i++];
+                        tmp = arr[i];
 
                         const index = "@" + tmp;
-                        const check_val = has_and ? check[index] : z;
+                        const check_val = has_and ? check[index] || 0 : z;
 
-                        if(check_val){
+                        if(check_val || suggest){
 
                             if(has_not && check_not[index]){
 
@@ -3392,13 +3414,13 @@
                                     // should only happened when at least one bool "and" was set
                                     // TODO: check bool and provide complexity reduction
 
-                                    if(!pointer || (--pointer < count)){
+                                    if(!pointer_count || (--pointer_count < count)){
 
                                         result[count++] = tmp;
 
                                         if(limit && (count === limit)){
 
-                                            return create_page(cursor, count, result);
+                                            return create_page(cursor, count + (pointer || 0), result);
                                         }
                                     }
                                 }
@@ -3449,21 +3471,19 @@
                             i = 0;
                         }
 
-                        while(i < result_length){
+                        for(; i < result_length; i++){
 
-                            const id = first_result[i++];
+                            const id = first_result[i];
 
                             if(!check_not["@" + id]){
 
-                                if(!pointer || (--pointer < count)){
+                                result[count++] = id;
 
-                                    result[count++] = id;
-
-                                    if(limit && (count === limit)){
-
-                                        return create_page(cursor, i, result);
-                                    }
-                                }
+                                // TODO: is actually not covered
+                                // if(limit && (count === limit)){
+                                //
+                                //     return create_page(cursor, (i + 1), result);
+                                // }
                             }
                         }
                     }
@@ -3480,7 +3500,7 @@
                     if(pointer_suggest){
 
                         z = parseInt(pointer_suggest[0], 10) + 1;
-                        i = parseInt(pointer_suggest[1], 10);
+                        i = parseInt(pointer_suggest[1], 10) + 1;
                     }
                     else{
 
@@ -3488,7 +3508,7 @@
                         i = 0;
                     }
 
-                    while(z--){
+                    for(; z--;){
 
                         tmp = suggestions[z];
 
@@ -3520,6 +3540,11 @@
 
                     result = arrays[0];
 
+                    if(pointer){
+
+                        pointer = parseInt(pointer[0], 10);
+                    }
+
                     // TODO: handle references to the original index array
                     // return result.slice(0);
                 }
@@ -3527,16 +3552,28 @@
 
             if(limit){
 
-                const start = cursor ? parseInt(cursor, 10) : 0;
+                const length = result.length;
+
+                if(pointer && (pointer > length)){
+
+                    pointer = 0;
+                }
+
+                const start = pointer || 0;
                       page = start + limit;
 
-                if(page < result.length){
+                if(page < length){
 
                     result = result.slice(start, page);
                 }
-                else if(start){
+                else {
 
-                    result = result.slice(start);
+                    page = 0;
+
+                    if(start){
+
+                        result = result.slice(start);
+                    }
                 }
             }
 
@@ -4014,8 +4051,6 @@
 
     function provide(name, factory, root){
 
-        /* istanbul ignore next */
-
         let prop;
 
         // AMD (RequireJS)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "flexsearch",
-  "version": "0.6.1",
+  "version": "0.6.2",
   "description": "Next-Generation full text search library with zero dependencies.",
   "homepage": "https://github.com/nextapps-de/flexsearch/",
   "author": "Thomas Wilkerling",
@@ -32,15 +32,24 @@
     "build-custom": "node compile RELEASE=custom DEBUG=false PROFILER=false SUPPORT_WORKER=false SUPPORT_ENCODER=false SUPPORT_CACHE=false SUPPORT_ASYNC=false SUPPORT_PRESET=false SUPPORT_SUGGESTION=false SUPPORT_SERIALIZE=false SUPPORT_INFO=false SUPPORT_DOCUMENT=false SUPPORT_OPERATOR=false SUPPORT_WHERE=false SUPPORT_PAGINATION=false SUPPORT_LANG_DE=false SUPPORT_LANG_EN=false",
     "build-es5": "node compile RELEASE=es5 DEBUG=true PROFILER=false SUPPORT_WORKER=true SUPPORT_ENCODER=true SUPPORT_CACHE=true SUPPORT_ASYNC=true SUPPORT_PRESET=true SUPPORT_SUGGESTION=true SUPPORT_SERIALIZE=true SUPPORT_INFO=true SUPPORT_DOCUMENT=true SUPPORT_OPERATOR=true SUPPORT_WHERE=true SUPPORT_PAGINATION=true SUPPORT_LANG_DE=false SUPPORT_LANG_EN=false LANGUAGE_OUT=ECMASCRIPT5_STRICT",
     "build-node": "node compile RELEASE=node DEBUG=false PROFILER=false SUPPORT_WORKER=false SUPPORT_ENCODER=true SUPPORT_CACHE=true SUPPORT_ASYNC=true SUPPORT_PRESET=true SUPPORT_SUGGESTION=true SUPPORT_SERIALIZE=true SUPPORT_INFO=true SUPPORT_DOCUMENT=true SUPPORT_OPERATOR=true SUPPORT_WHERE=true SUPPORT_PAGINATION=true SUPPORT_LANG_DE=false SUPPORT_LANG_EN=false",
+    "build-pre": "node compile RELEASE=pre DEBUG=false PROFILER=false SUPPORT_WORKER=false SUPPORT_ENCODER=true SUPPORT_CACHE=true SUPPORT_ASYNC=true SUPPORT_PRESET=true SUPPORT_SUGGESTION=true SUPPORT_SERIALIZE=true SUPPORT_INFO=true SUPPORT_DOCUMENT=true SUPPORT_OPERATOR=true SUPPORT_WHERE=true SUPPORT_PAGINATION=true SUPPORT_LANG_DE=false SUPPORT_LANG_EN=false FORMATTING=PRETTY_PRINT",
     "build-lang": "node compile RELEASE=lang",
-    "build-all": "npm run build && npm run build-light && npm run build-compact && npm run build-es5 && npm run build-node",
-    "test-production": "nyc --reporter=html --reporter=text mocha --timeout=3000 test --exit",
-    "test-light": "nyc --reporter=html --reporter=text mocha --timeout=3000 test/ --exit",
-    "test-develop": "nyc --reporter=html --reporter=text mocha --timeout=3000 --exit",
+    "build-all": "npm run build && npm run build-light && npm run build-compact && npm run build-es5 && npm run build-node && npm run build-pre",
+    "test-production": "mocha --timeout=3000 test --exit",
+    "test-light": "mocha --timeout=3000 test/ --exit",
+    "test-develop": "mocha --timeout=3000 --exit",
     "test-browser": "mocha-phantomjs test/index.html",
-    "test": "npm run test-develop && npm run test-production && npm run test-light && npm run test-browser",
-    "update": "node_modules/.bin/updtr --to non-breaking",
-    "coverage": "nyc report --reporter=lcov --reporter=text-lcov | coveralls"
+    "test-coverage": "nyc --reporter=html --reporter=text mocha --timeout=3000 mocha test/test.js",
+    "test": "npm run test-develop && npm run test-production && npm run test-light && npm run test-browser && npm run test-coverage",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "update": "node_modules/.bin/updtr --to non-breaking"
+  },
+  "nyc": {
+    "per-file": true,
+    "all": true,
+    "include": [
+      "dist/flexsearch.pre.js"
+    ]
   },
   "files": [
     "flexsearch.js",
@@ -57,12 +66,12 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "codacy-coverage": "^3.4.0",
-    "coveralls": "^3.0.2",
-    "google-closure-compiler": "^20190215.0.0-nightly",
-    "mocha": "^6.0.0",
+    "coveralls": "^3.0.3",
+    "google-closure-compiler": "^20190219.0.0-nightly",
+    "mocha": "^6.0.1",
     "mocha-lcov-reporter": "^1.3.0",
     "mocha-phantomjs": "^4.1.0",
-    "nyc": "^13.1.0",
+    "nyc": "^13.3.0",
     "phantomjs-prebuilt": "^2.1.16",
     "updtr": "^3.0.0"
   }

test/matching.html

@@ -276,8 +276,7 @@
         bulksearch = new BulkSearch({
             type: 'short', // this type specifies the maximum bitlength of assigned IDs!
             encode: 'extra',
-            multi: true,
-            suggest:true
+            multi: true
         });
 
         console.time('bulksearch');
@@ -295,8 +294,7 @@
             tokenize: 'strict',
             threshold: 0,
             resolution: 9,
-            depth: 3,
-            suggest: true
+            depth: 3
         });
 
         console.time('flexsearch');
@@ -452,11 +450,11 @@
                 switch(i){
 
                     case 1:
-                        results = flexsearch.search(query);
+                        results = flexsearch.search(query, {suggest: true});
                         break;
 
                     case 2:
-                        results = bulksearch.search(query);
+                        results = bulksearch.search(query, {suggest: true});
                         break;
 
                     case 3:

test/test.es6.js

@@ -1,7 +1,6 @@
-var env = "";
-
 if(typeof module !== "undefined"){
 
+    var env = "pre";
     var expect = require("chai").expect;
     var FlexSearch = require("../" + (env ? "dist/": "") + "flexsearch" + (env ? "." + env : "") + ".js");
 }
@@ -60,7 +59,6 @@ describe("Index Multi-Field Documents (ES6)", function(){
 
             async: true,
             doc: {
-
                 id: "id",
                 field: [
                     "data:title",
@@ -71,8 +69,11 @@ describe("Index Multi-Field Documents (ES6)", function(){
 
         await index.add(data);
 
-        expect(index.doc.index["data:title"].length).to.equal(3);
-        expect(index.doc.index["data:body"].length).to.equal(3);
+        if(env === ""){
+
+            expect(index.doc.index["data:title"].length).to.equal(3);
+            expect(index.doc.index["data:body"].length).to.equal(3);
+        }
 
         expect(await index.search({field: "data:body", query: "body"})).to.have.members(data);
         expect(await index.search({field: "data:title", query: "title"})).to.have.members(data);
@@ -106,8 +107,11 @@ describe("Index Multi-Field Documents (ES6)", function(){
 
         await index.remove(update);
 
-        expect(await index.doc.index["data:title"].length).to.equal(0);
-        expect(await index.doc.index["data:body"].length).to.equal(0);
+        if(env === ""){
+
+            expect(await index.doc.index["data:title"].length).to.equal(0);
+            expect(await index.doc.index["data:body"].length).to.equal(0);
+        }
     });
 
     it("Should have been indexed properly (Worker)", async function(){
@@ -128,8 +132,11 @@ describe("Index Multi-Field Documents (ES6)", function(){
 
         await index.add(data);
 
-        expect(index.doc.index["data:title"].length).to.equal(3);
-        expect(index.doc.index["data:body"].length).to.equal(3);
+        if(env === ""){
+
+            expect(index.doc.index["data:title"].length).to.equal(3);
+            expect(index.doc.index["data:body"].length).to.equal(3);
+        }
 
         expect(await index.search({field: "data:body", query: "body"})).to.have.members(data);
         expect(await index.search({field: "data:title", query: "title"})).to.have.members(data);
@@ -163,7 +170,10 @@ describe("Index Multi-Field Documents (ES6)", function(){
 
         await index.remove(update);
 
-        expect(await index.doc.index["data:title"].length).to.equal(0);
-        expect(await index.doc.index["data:body"].length).to.equal(0);
+        if(env === ""){
+
+            expect(await index.doc.index["data:title"].length).to.equal(0);
+            expect(await index.doc.index["data:body"].length).to.equal(0);
+        }
     });
 });

test/test.js

@@ -1,6 +1,6 @@
 if(typeof module !== "undefined"){
 
-    var env = process.argv[3] === "test" ? "min" : process.argv[3] === "test/" ? "light" : "";
+    var env = (process.argv[3] === "test" ? "min" : process.argv[3] === "test/" ? "light" : process.argv[3] === "test/test.js" ? "pre" : "");
     var expect = require("chai").expect;
     var FlexSearch = require("../" + (env ? "dist/": "") + "flexsearch" + (env ? "." + env : "") + ".js");
     //require("../lang/en.min.js");
@@ -130,7 +130,7 @@ describe("Initialize", function(){
 
             encode: "icase",
             tokenize: "reverse",
-            cache: true
+            cache: 2
         });
 
         it("Should have correct constructors", function(){
@@ -186,7 +186,7 @@ describe("Initialize", function(){
             expect(flexsearch_async.async).to.equal(true);
         }
 
-        if((env !== "light") && (env !== "min")){
+        if((env !== "light") && (env !== "min") && (env !== "pre")){
 
             expect(flexsearch_default.tokenize).to.equal("forward");
             expect(flexsearch_strict.tokenize).to.equal("strict");
@@ -403,15 +403,42 @@ if(env !== "light"){
 
     describe("Add (Async)", function(){
 
+        it("Should have been added to the index", function(done){
+
+            var index = new FlexSearch();
+
+            expect(index.length).to.equal(0);
+
+            index.add(0, "foo", function(){
+
+                expect(index.length).to.equal(1);
+
+                done();
+            });
+
+            expect(index.length).to.equal(0);
+        });
+
         it("Should have been added to the index", function(done){
 
             expect(flexsearch_async.length).to.equal(0);
 
-            flexsearch_async.add(0, "foo");
+            flexsearch_async.add(0, "foo", function(){
+
+                done();
+            });
+
+            expect(flexsearch_async.length).to.equal(0);
+        });
+
+        it("Should have been added to the index", function(done){
+
+            expect(flexsearch_async.length).to.equal(1);
+
             flexsearch_async.add(2, "bar");
             flexsearch_async.add(1, "foobar");
 
-            expect(flexsearch_async.length).to.equal(0);
+            expect(flexsearch_async.length).to.equal(1);
 
             setTimeout(function(){
 
@@ -448,6 +475,20 @@ if(env !== "light"){
 
     describe("Search (Async)", function(){
 
+        it("Should have been matched from index", function(done){
+
+            var index = new FlexSearch({doc: {id: "id", field: "title"}});
+            var data = {id: 0, title: "foo"};
+
+            index.add(data);
+
+            index.search("foo", function(result){
+
+                expect(result).to.have.members([data]);
+                done();
+            });
+        });
+
         it("Should have been matched from index", function(done){
 
             flexsearch_async.search("foo", function(result){
@@ -580,13 +621,44 @@ if(env !== "light"){
 
         it("Should have been removed from the index", function(done){
 
-            flexsearch_async.remove(0);
+            var index = new FlexSearch();
+
+            index.add(0, "foo");
+
+            expect(index.length).to.equal(1);
+
+            index.remove(0, function(){
+
+                expect(index.length).to.equal(0);
+
+                done();
+            });
+
+            expect(index.length).to.equal(1);
+        });
+
+        it("Should have been removed from the index", function(done){
+
+            expect(flexsearch_async.length).to.equal(3);
+
+            flexsearch_async.remove(0, function(){
+
+                expect(flexsearch_async.length).to.equal(2);
+
+                done();
+            });
+
+            expect(flexsearch_async.length).to.equal(3);
+        });
+
+        it("Should have been removed from the index", function(done){
+
             flexsearch_async.remove(2);
             flexsearch_async.remove(1).then(function(){
                 expect(flexsearch_async.length).to.equal(0);
             });
 
-            expect(flexsearch_async.length).to.equal(3);
+            expect(flexsearch_async.length).to.equal(2);
 
             flexsearch_async.search("foo", function(result){
                 expect(result).to.have.lengthOf(0);
@@ -794,7 +866,7 @@ if(env !== "light"){
                 });
             });
 
-            if(env !== "light" && env !== "min"){
+            if((env !== "light") && (env !== "min")){
 
                 it("Should have been debug mode activated", function(){
 
@@ -820,7 +892,7 @@ if(env !== "light"){
                 worker: 4
             });
 
-            if(env !== "min"){
+            if((env !== "min") && (env !== "pre")){
 
                 expect(flexsearch_worker.info().worker).to.equal(false);
             }
@@ -1130,6 +1202,50 @@ describe("Stemmer", function(){
     });
 });
 
+
+describe("Custom Language", function(){
+
+    it("Should have been applied properly", function(){
+
+        FlexSearch.registerLanguage("custom", {
+            filter: ["a", "an"],
+            stemmer: {
+                "ization": "ize",
+                "tional": "tion"
+            }
+        });
+
+        var index = new FlexSearch({
+            encode: "icase",
+            tokenize: "reverse",
+            filter: "custom",
+            stemmer: "custom"
+        });
+
+        index.add(0, "Just a multinational colonization.");
+
+        expect(index.length).to.equal(1);
+        expect(index.search("Just a multinational colonization.")).to.include(0);
+        expect(index.search("Just an multinational colonization.")).to.include(0);
+        expect(index.search("multinational colonization")).to.include(0);
+        expect(index.search("tional tion")).to.have.length(0);
+
+        index = new FlexSearch({
+            encode: "icase",
+            tokenize: "reverse",
+            lang: "custom"
+        });
+
+        index.add(0, "Just a multinational colonization.");
+
+        expect(index.length).to.equal(1);
+        expect(index.search("Just a multinational colonization.")).to.include(0);
+        expect(index.search("Just an multinational colonization.")).to.include(0);
+        expect(index.search("multinational colonization")).to.include(0);
+        expect(index.search("tional tion")).to.have.length(0);
+    });
+});
+
 // ------------------------------------------------------------------------
 // Relevance Tests
 // ------------------------------------------------------------------------
@@ -1209,11 +1325,31 @@ if(env !== "light") describe("Suggestions", function(){
         expect(index.search("1 3 4 7", { suggest: false })).to.have.lengthOf(0);
         expect(index.search("1 3 4 7", { suggest: true })).to.have.members([0]);
         expect(index.search("1 3 9 7", { suggest: true })).to.have.members([0]);
-        expect(index.search("one foobar two", { suggest: true })).to.have.members([1, 2]);
-        expect(index.search("zero one foobar two foobar", { suggest: true })).to.have.members([1, 2]);
 
-        //TODO
-        //expect(index.search("zero one foobar two foobar")[0]).to.equal(1);
+        expect(index.search("foobar one two", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("one foobar two", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("one two foobar", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("zero one foobar two foobar", { suggest: true })).to.have.members([1, 2]);
+    });
+
+    it("Should have been suggested properly by context", function(){
+
+        var index = new FlexSearch({
+            encode: "advanced",
+            tokenize: "strict",
+            depth: 3
+        });
+
+        index.add(1, "zero one two three four five six seven eight nine ten");
+        index.add(2, "four two zero one three ten five seven eight six nine");
+
+        expect(index.search("foobar one", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("foobar foobar foobar one foobar foobar foobar", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("foobar one two", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("one foobar two", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("one two foobar", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("foobar one foobar two foobar", { suggest: true })).to.have.members([1, 2]);
+        expect(index.search("zero one foobar two foobar", { suggest: true })).to.have.members([1, 2]);
     });
 });
 
@@ -1221,7 +1357,7 @@ if(env !== "light") describe("Suggestions", function(){
 // Where Clause
 // ------------------------------------------------------------------------
 
-if(env === "" || env === "min") describe("Where/Find", function(){
+if((env === "") || (env === "min") || (env === "pre")) describe("Where/Find", function(){
 
     var data = [{
         id: 0,
@@ -1286,6 +1422,145 @@ if(env === "" || env === "min") describe("Where/Find", function(){
             }
         })).to.have.members([data[2]]);
     });
+
+    it("Should have been tagged properly", function(){
+
+        var index = new FlexSearch({
+            doc: {
+                id: "id",
+                field: "title",
+                tag : "cat"
+            }
+        });
+
+        index.add(data);
+
+        expect(index.length).to.equal(3);
+        expect(index.index).to.have.members(["@0", "@1", "@2"]);
+
+        expect(index.where({cat: "1"})).to.have.members([data[0], data[2]]);
+        expect(index.where("cat", "1")).to.have.members([data[0], data[2]]);
+        expect(index.where("cat", "1", 1)).to.have.members([data[0]]);
+
+        expect(index.where({
+            cat: "1",
+            flag: true
+        })).to.have.members([data[2]]);
+
+        expect(index.where({
+            flag: true,
+            cat: "1"
+        })).to.have.members([data[2]]);
+
+        expect(index.search("title", {
+            where: {
+                cat: "1"
+            }
+        })).to.have.members([data[0], data[2]]);
+
+        expect(index.search("title", {
+            where: {
+                cat: "1"
+            },
+            limit: 1
+        })).to.have.members([data[0]]);
+
+        expect(index.search("title", {
+            where: {
+                cat: "3"
+            }
+        })).to.have.lengthOf(0);
+
+        expect(index.search("foobar", {
+            where: {
+                cat: "1"
+            }
+        })).to.have.lengthOf(0);
+
+        // -----------------------------------------
+
+        index = new FlexSearch({
+            doc: {
+                id: "id",
+                field: ["title"],
+                tag : ["cat"]
+            }
+        });
+
+        index.add(data);
+
+        expect(index.length).to.equal(3);
+        expect(index.index).to.have.members(["@0", "@1", "@2"]);
+
+        expect(index.where({cat: "1"})).to.have.members([data[0], data[2]]);
+
+        expect(index.search("title", {
+            where: {
+                cat: "1"
+            }
+        })).to.have.members([data[0], data[2]]);
+
+        expect(index.search("title", {
+            where: {
+                cat: "3"
+            }
+        })).to.have.lengthOf(0);
+
+        expect(index.search("foobar", {
+            where: {
+                cat: "1"
+            }
+        })).to.have.lengthOf(0);
+
+        // ------------------------------------
+
+        index = new FlexSearch({
+            doc: {
+                id: "id",
+                field: "data:title",
+                tag : "data:cat"
+            }
+        });
+
+        data = [{
+            id: 0,
+            data: {
+                title: "Title 1",
+                cat: "1",
+                flag: false
+            }
+        },{
+            id: 1,
+            data: {
+                title: "Title 2",
+                cat: "2",
+                flag: false
+            }
+        },{
+            id: 2,
+            data: {
+                title: "Title 3",
+                cat: "1",
+                flag: true
+            }
+        }];
+
+        index.add(data);
+
+        expect(index.where({"data:cat": "1"})).to.have.members([data[0], data[2]]);
+        expect(index.where("data:cat", "1")).to.have.members([data[0], data[2]]);
+        expect(index.where("data:cat", "1", 1)).to.have.members([data[0]]);
+
+        expect(index.where({
+            "data:cat": "1",
+            "data:flag": true
+        })).to.have.members([data[2]]);
+
+        expect(index.where({
+            "data:flag": true,
+            "data:cat": "1"
+        })).to.have.members([data[2]]);
+    });
 });
 
 // ------------------------------------------------------------------------
@@ -1777,7 +2052,79 @@ if(env !== "light") describe("Index Multi-Field Documents", function(){
         expect(results[2]).to.equal(data[0]);
     });
 
-    if(env === "" && (typeof require !== "undefined") && !this._phantom){
+    it("Should have been sorted suggested and paged", function(){
+
+        var index = new FlexSearch({
+
+            doc: {
+                id: "id",
+                field: ["data:title", "data:body"]
+            }
+        });
+
+        index.add(data);
+
+        var results = index.search({
+
+            field: "data:title",
+            query: "title",
+            suggest: true,
+            page: true,
+            limit: 2
+        });
+
+        expect(results.result).to.have.members([data[0], data[1]]);
+
+        results = index.search({
+
+            field: "data:title",
+            query: "title",
+            suggest: true,
+            page: results.next,
+            limit: 2
+        });
+
+        expect(results.result).to.have.members([data[2]]);
+
+        results = index.search({
+
+            field: "data:title",
+            query: "foobar title foobar title foobar",
+            suggest: true,
+            page: true,
+            limit: 2
+        });
+
+        expect(results.result).to.have.members([data[0], data[1]]);
+
+        results = index.search({
+
+            field: "data:title",
+            query: "foobar title foobar title foobar",
+            suggest: true,
+            page: results.next,
+            limit: 2
+        });
+
+        expect(results.result).to.have.members([data[2]]);
+
+        results = index.search([{
+
+            field: "data:title",
+            query: "title undefined",
+            bool: "and",
+            suggest: true,
+            limit: 2
+        },{
+            field: "data:body",
+            query: "undefined",
+            bool: "not"
+        }]);
+
+        expect(results).to.have.members([data[0], data[1]]);
+    });
+
+    if((!env || (env === "pre")) && (typeof require !== "undefined") && !this._phantom){
 
         require("./test.es6.js");
     }
@@ -1829,6 +2176,66 @@ if(env !== "light") describe("Pagination", function(){
         expect(result.result).to.have.members([4]);
     });
 
+    it("Should have been properly paged (suggestion)", function(){
+
+        var index = new FlexSearch();
+
+        index.add(0, "foo bar").add(1, "foo bar").add(2, "foo bar test").add(3, "foo bar").add(4, "foo bar");
+
+        expect(index.index).to.have.members(["@0", "@1", "@2", "@3", "@4"]);
+        expect(index.search("foo")).to.have.lengthOf(5);
+        expect(index.search("foo", 2)).to.have.lengthOf(2);
+
+        var result = index.search("foo undefined bar", {
+            suggest: true,
+            page: true,
+            limit: 2
+        });
+
+        expect(result).to.have.keys(["page", "next", "result"]);
+        expect(result.result).to.have.members([0, 1]);
+
+        result = index.search("foo bar test", {
+            suggest: true,
+            page: true,
+            limit: 2
+        });
+
+        expect(result.result).to.have.members([2, 0]);
+
+        result = index.search("foo undefined bar", {
+            suggest: true,
+            page: true,
+            limit: 2
+        });
+
+        expect(result.result).to.have.members([0, 1]);
+
+        result = index.search("foo undefined bar", {
+            suggest: true,
+            page: result.next,
+            limit: 2
+        });
+
+        expect(result.result).to.have.members([2, 3]);
+
+        result = index.search("foo undefined bar", {
+            suggest: true,
+            page: result.page,
+            limit: 2
+        });
+
+        expect(result.result).to.have.members([2, 3]);
+
+        result = index.search("foo undefined bar", {
+            suggest: true,
+            page: result.next,
+            limit: 2
+        });
+
+        expect(result.result).to.have.members([4]);
+    });
+
     it("Should have been properly paged (documents)", function(){
 
         var data = [{
@@ -2164,6 +2571,20 @@ if(env !== "light") describe("Operators", function(){
             query: "x",
             bool: "not"
         }])).to.have.length(0);
+
+        expect(index.search([{
+            field: "title",
+            query: "title",
+            bool: "not"
+        },{
+            field: "body",
+            query: "body",
+            bool: "not"
+        },{
+            field: "blacklist",
+            query: "x",
+            bool: "not"
+        }])).to.have.length(0);
     });
 });
 
@@ -2220,6 +2641,42 @@ if(env !== "light") describe("Export / Import", function(){
 
     it("Should have been exported properly", function(){
 
+        var index = new FlexSearch("match");
+
+        index.add(0, "foo");
+        index.add(1, "bar");
+        index.add(2, "foobar");
+
+        data = index.export();
+
+        if(env === ""){
+
+            expect(data).to.equal(JSON.stringify(
+                [
+                    index._map,
+                    index._ctx,
+                    Object.keys(index._ids)
+                ]
+            ));
+        }
+    });
+
+    it("Should have been imported properly", function(){
+
+        var index = new FlexSearch("match");
+
+        index.import(data);
+
+        expect(index.length).to.equal(3);
+
+        expect(index.search("foo")).to.have.lengthOf(2);
+        expect(index.search("bar")).to.have.lengthOf(2);
+        expect(index.search("foobar")).to.have.lengthOf(1);
+        expect(index.search("foobar")[0]).to.equal(2);
+    });
+
+    it("Should have been exported properly (documents)", function(){
+
         var index = new FlexSearch({
             tokenize: "reverse",
             doc: {
@@ -2248,9 +2705,10 @@ if(env !== "light") describe("Export / Import", function(){
         }
     });
 
-    it("Should have been imported properly", function(){
+    it("Should have been imported properly (documents)", function(){
 
-        var index = new FlexSearch("score", {
+        var index = new FlexSearch({
+            tokenize: "reverse",
             doc: {
                 id: "id",
                 field: "title"
@@ -2286,6 +2744,19 @@ describe("Presets", function(){
         expect(FlexSearch.create("balance").length).to.equal(0);
         expect(FlexSearch.create("fast").length).to.equal(0);
     });
+
+    it("Should have been properly extended", function(){
+
+        var index = FlexSearch.create("fast");
+        index.add(0, "foobar");
+        expect(index.search("bar")).to.have.lengthOf(0);
+
+        index = FlexSearch.create("fast", {id: "test", tokenize: "reverse"});
+        expect(index.id).to.equal("test");
+        index.add(0, "foobar");
+        expect(index.search("bar")).to.have.lengthOf(1);
+        expect(index.search("bar")).to.have.members([0])
+    });
 });
 
 // ------------------------------------------------------------------------
@@ -2418,6 +2889,23 @@ describe("Destroy", function(){
         expect(index.search("foo")).to.have.lengthOf(0);
         expect(index.search("bar")).to.have.lengthOf(0);
     });
+
+    if(env !== "light") it("Should have been destroyed properly (documents)", function(){
+
+        var data = [{id: 0, title: "foo"}, {id: 1, title: "bar"}];
+
+        var index = FlexSearch.create({doc: {id: "id", field: "title"}})
+                              .add(data)
+                              .add(data);
+
+        expect(index.search("foo")).to.have.members([data[0]]);
+        expect(index.search("bar")).to.have.members([data[1]]);
+
+        index.destroy();
+
+        expect(index.search("foo")).to.have.lengthOf(0);
+        expect(index.search("bar")).to.have.lengthOf(0);
+    });
 });
 
 // ------------------------------------------------------------------------