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a=e[i],c=i==s-1;if("*"==a)r=!0,t.edges[a]=t,t.final=c;else{var u=new o.TokenSet;u.final=c,t.edges[a]=u,t=u,r&&(t.edges["*"]=n)}}return n},o.TokenSet.prototype.toArray=function(){for(var e=[],t=[{prefix:"",node:this}];t.length;){var n=t.pop(),r=Object.keys(n.node.edges),i=r.length;n.node.final&&e.push(n.prefix);for(var o=0;o<i;o++){var s=r[o];t.push({prefix:n.prefix.concat(s),node:n.node.edges[s]})}}return e},o.TokenSet.prototype.toString=function(){if(this._str)return this._str;for(var e=this.final?"1":"0",t=Object.keys(this.edges).sort(),n=t.length,r=0;r<n;r++){var i=t[r];e=e+i+this.edges[i].id}return e},o.TokenSet.prototype.intersect=function(e){for(var t=new o.TokenSet,n=void 0,r=[{qNode:e,output:t,node:this}];r.length;){n=r.pop();for(var i=Object.keys(n.qNode.edges),s=i.length,a=Object.keys(n.node.edges),c=a.length,u=0;u<s;u++)for(var l=i[u],f=0;f<c;f++){var h=a[f];if(h==l||"*"==l){var d=n.node.edges[h],p=n.qNode.edges[l],m=d.final&&p.final,v=void 0;h in n.output.edges?(v=n.output.edges[h],v.final=v.final||m):(v=new o.TokenSet,v.final=m,n.output.edges[h]=v),r.push({qNode:p,output:v,node:d})}}}return t},o.TokenSet.Builder=function(){this.previousWord="",this.root=new o.TokenSet,this.uncheckedNodes=[],this.minimizedNodes={}},o.TokenSet.Builder.prototype.insert=function(e){var t,n=0;if(e<this.previousWord)throw new Error("Out of order word insertion");for(var r=0;r<e.length&&r<this.previousWord.length&&e[r]==this.previousWord[r];r++)n++;this.minimize(n),t=0==this.uncheckedNodes.length?this.root:this.uncheckedNodes[this.uncheckedNodes.length-1].child;for(var r=n;r<e.length;r++){var i=new o.TokenSet,s=e[r];t.edges[s]=i,this.uncheckedNodes.push({parent:t,char:s,child:i}),t=i}t.final=!0,this.previousWord=e},o.TokenSet.Builder.prototype.finish=function(){this.minimize(0)},o.TokenSet.Builder.prototype.minimize=function(e){for(var t=this.uncheckedNodes.length-1;t>=e;t--){var n=this.uncheckedNodes[t],r=n.child.toString();r in this.minimizedNodes?n.parent.edges[n.char]=this.minimizedNodes[r]:(n.child._str=r,this.minimizedNodes[r]=n.child),this.uncheckedNodes.pop()}},o.Index=function(e){this.invertedIndex=e.invertedIndex,this.documentVectors=e.documentVectors,this.tokenSet=e.tokenSet,this.documentCount=e.documentCount,this.averageDocumentLength=e.averageDocumentLength,this.b=e.b,this.k1=e.k1,this.fields=e.fields,this.pipeline=e.pipeline},o.Index.prototype.search=function(e){return this.query(function(t){new o.QueryParser(e,t).parse()})},o.Index.prototype.query=function(e){var t=new o.Query(this.fields),n=Object.create(null),r=new o.Vector;e.call(t,t);for(var i=0;i<t.clauses.length;i++){var s=t.clauses[i],a=null;a=s.usePipeline?this.pipeline.runString(s.term):[s.term];for(var c=0;c<a.length;c++){var u=a[c];s.term=u;for(var l=o.TokenSet.fromClause(s),f=this.tokenSet.intersect(l).toArray(),h=0;h<f.length;h++){var d=f[h],p=this.invertedIndex[d],m=p._index,v=o.idf(p,this.documentCount),y=v*(1*(this.k1+1))/(this.k1*(1-this.b+this.b*(t.clauses.length/this.averageDocumentLength))+1);r.upsert(m,y*s.boost,function(e,t){return e+t});for(var g=0;g<s.fields.length;g++)for(var w=s.fields[g],b=p[w],_=Object.keys(b),x=0;x<_.length;x++){var E,k,S=_[x];E=b[S],k=new o.MatchData(d,w,E),S in n?n[S].combine(k):n[S]=k}}}}for(var _=Object.keys(n),T=[],i=0;i<_.length;i++){var L=_[i],C=this.documentVectors[L],y=r.similarity(C);T.push({ref:L,score:y,matchData:n[L]})}return T.sort(function(e,t){return t.score-e.score})},o.Index.prototype.toJSON=function(){var e=Object.keys(this.invertedIndex).sort().map(function(e){return[e,this.invertedIndex[e]]},this),t=Object.keys(this.documentVectors).map(function(e){return[e,this.documentVectors[e].toJSON()]},this);return{version:o.version,averageDocumentLength:this.averageDocumentLength,b:this.b,k1:this.k1,fields:this.fields,documentVectors:t,invertedIndex:e,pipeline:this.pipeline.toJSON()}},o.Index.load=function(e){var t={},n={},r=e.documentVectors,i=0,s={},a=e.invertedIndex,c=new o.TokenSet.Builder,u=o.Pipeline.load(e.pipeline);e.version!=o.version&&o.utils.warn("Version mismatch when loading serialised index. Current version of lunr '"+o.version+"' does not match serialized index '"+e.version+"'");for(var l=0;l<r.length;l++,i++){var f=r[l],h=f[0],d=f[1];n[h]=new o.Vector(d)}for(var l=0;l<a.length;l++){var f=a[l],p=f[0],m=f[1];c.insert(p),s[p]=m}return c.finish(),t.b=e.b,t.k1=e.k1,t.fields=e.fields,t.averageDocumentLength=e.averageDocumentLength,t.documentCount=i,t.documentVectors=n,t.invertedIndex=s,t.tokenSet=c.root,t.pipeline=u,new o.Index(t)},o.Builder=function(){this._ref="id",this._fields=[],this.invertedIndex=Object.create(null),this.documentTermFrequencies={},this.documentLengths={},this.tokenizer=o.tokenizer,this.pipeline=new o.Pipeline,this.searchPipeline=new o.Pipeline,this.documentCount=0,this._b=.75,this._k1=1.2,this.termIndex=0,this.metadataWhitelist=[]},o.Builder.prototype.ref=function(e){this._ref=e},o.Builder.prototype.field=function(e){this._fields.push(e)},o.Builder.prototype.b=function(e){this._b=e<0?0:e>1?1:e},o.Builder.prototype.k1=function(e){this._k1=e},o.Builder.prototype.add=function(e){var t=e[this._ref],n={};this.documentCount+=1,this.documentTermFrequencies[t]=n,this.documentLengths[t]=0;for(var r=0;r<this._fields.length;r++){var i=this._fields[r],o=e[i],s=this.tokenizer(o),a=this.pipeline.run(s);this.documentLengths[t]+=a.length;for(var c=0;c<a.length;c++){var u=a[c];if(void 0==n[u]&&(n[u]=0),n[u]+=1,void 0==this.invertedIndex[u]){var l=Object.create(null);l._index=this.termIndex,this.termIndex+=1;for(var f=0;f<this._fields.length;f++)l[this._fields[f]]=Object.create(null);this.invertedIndex[u]=l}void 0==this.invertedIndex[u][i][t]&&(this.invertedIndex[u][i][t]=Object.create(null));for(var h=0;h<this.metadataWhitelist.length;h++){var d=this.metadataWhitelist[h],p=u.metadata[d];void 0==this.invertedIndex[u][i][t][d]&&(this.invertedIndex[u][i][t][d]=[]),this.invertedIndex[u][i][t][d].push(p)}}}},o.Builder.prototype.calculateAverageDocumentLengths=function(){for(var e=Object.keys(this.documentLengths),t=e.length,n=0,r=0;r<t;r++){var i=e[r];n+=this.documentLengths[i]}this.averageDocumentLength=n/t},o.Builder.prototype.createDocumentVectors=function(){for(var e={},t=Object.keys(this.documentTermFrequencies),n=t.length,r=0;r<n;r++){for(var i=t[r],s=this.documentLengths[i],a=new o.Vector,c=this.documentTermFrequencies[i],u=Object.keys(c),l=u.length,f=0;f<l;f++){var h=u[f],d=c[h],p=this.invertedIndex[h]._index,m=o.idf(this.invertedIndex[h],this.documentCount),v=m*((this._k1+1)*d)/(this._k1*(1-this._b+this._b*(s/this.averageDocumentLength))+d),y=Math.round(1e3*v)/1e3;a.insert(p,y)}e[i]=a}this.documentVectors=e},o.Builder.prototype.createTokenSet=function(){this.tokenSet=o.TokenSet.fromArray(Object.keys(this.invertedIndex).sort())},o.Builder.prototype.build=function(){return this.calculateAverageDocumentLengths(),this.createDocumentVectors(),this.createTokenSet(),new o.Index({invertedIndex:this.invertedIndex,documentVectors:this.documentVectors,tokenSet:this.tokenSet,averageDocumentLength:this.averageDocumentLength,documentCount:this.documentCount,fields:this._fields,pipeline:this.searchPipeline,b:this._b,k1:this._k1})},o.Builder.prototype.use=function(e){var t=Array.prototype.slice.call(arguments,1);t.unshift(this),e.apply(this,t)},o.MatchData=function(e,t,n){this.metadata={},this.metadata[e]={},this.metadata[e][t]=n},o.MatchData.prototype.combine=function(e){for(var t=Object.keys(e.metadata),n=0;n<t.length;n++){var r=t[n],i=Object.keys(e.metadata[r]);void 0==this.metadata[r]&&(this.metadata[r]={});for(var o=0;o<i.length;o++){var s=i[o],a=Object.keys(e.metadata[r][s]);void 0==this.metadata[r][s]&&(this.metadata[r][s]={});for(var c=0;c<a.length;c++){var u=a[c];void 0==this.metadata[r][s][u]?this.metadata[r][s][u]=e.metadata[r][s][u]:this.metadata[r][s][u]=this.metadata[r][s][u].concat(e.metadata[r][s][u])}}}},o.Query=function(e){this.clauses=[],this.allFields=e},o.Query.prototype.clause=function(e){return"fields"in e||(e.fields=this.allFields),"boost"in e||(e.boost=1),"usePipeline"in e||(e.usePipeline=!0),this.clauses.push(e),this},o.Query.prototype.term=function(e,t){var n=t||{};return n.term=e,this.clause(n),this},o.QueryParseError=function(e,t,n){this.name="QueryParseError",this.message=e,this.start=t,this.end=n},o.QueryParseError.prototype=new Error,o.QueryLexer=function(e){this.lexemes=[],this.str=e,this.length=e.length,this.pos=0,this.start=0},o.QueryLexer.prototype.run=function(){for(var e=o.QueryLexer.lexText;e;)e=e(this)},o.QueryLexer.prototype.emit=function(e){this.lexemes.push({type:e,str:this.str.slice(this.start,this.pos),start:this.start,end:this.pos}),this.start=this.pos},o.QueryLexer.prototype.next=function(){if(this.pos==this.length)return o.QueryLexer.EOS;var e=this.str.charAt(this.pos);return this.pos+=1,e},o.QueryLexer.prototype.width=function(){return this.pos-this.start},o.QueryLexer.prototype.ignore=function(){this.start==this.pos&&(this.pos+=1),this.start=this.pos},o.QueryLexer.prototype.backup=function(){this.pos-=1},o.QueryLexer.prototype.acceptDigitRun=function(){var e,t;do{e=this.next(),t=e.charCodeAt(0)}while(t>47&&t<58);e!=o.QueryLexer.EOS&&this.backup()},o.QueryLexer.prototype.more=function(){return this.pos<this.length},o.QueryLexer.EOS="EOS",o.QueryLexer.FIELD="FIELD",o.QueryLexer.TERM="TERM",o.QueryLexer.EDIT_DISTANCE="EDIT_DISTANCE",o.QueryLexer.BOOST="BOOST",o.QueryLexer.lexField=function(e){return e.backup(),e.emit(o.QueryLexer.FIELD),e.ignore(),o.QueryLexer.lexText},o.QueryLexer.lexTerm=function(e){if(e.width()>1&&(e.backup(),e.emit(o.QueryLexer.TERM)),e.ignore(),e.more())return o.QueryLexer.lexText},o.QueryLexer.lexEditDistance=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(o.QueryLexer.EDIT_DISTANCE),o.QueryLexer.lexText},o.QueryLexer.lexBoost=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(o.QueryLexer.BOOST),o.QueryLexer.lexText},o.QueryLexer.lexEOS=function(e){e.width()>0&&e.emit(o.QueryLexer.TERM)},o.QueryLexer.termSeparator=o.tokenizer.separator,o.QueryLexer.lexText=function(e){for(;;){var t=e.next();if(t==o.QueryLexer.EOS)return o.QueryLexer.lexEOS;if(":"==t)return o.QueryLexer.lexField;if("~"==t)return e.backup(),e.width()>0&&e.emit(o.QueryLexer.TERM),o.QueryLexer.lexEditDistance;if("^"==t)return e.backup(),e.width()>0&&e.emit(o.QueryLexer.TERM),o.QueryLexer.lexBoost;if(t.match(o.QueryLexer.termSeparator))return o.QueryLexer.lexTerm}},o.QueryParser=function(e,t){this.lexer=new o.QueryLexer(e),this.query=t,this.currentClause={},this.lexemeIdx=0},o.QueryParser.prototype.parse=function(){this.lexer.run(),this.lexemes=this.lexer.lexemes;for(var e=o.QueryParser.parseFieldOrTerm;e;)e=e(this);return this.query},o.QueryParser.prototype.peekLexeme=function(){return this.lexemes[this.lexemeIdx]},o.QueryParser.prototype.consumeLexeme=function(){var e=this.peekLexeme();return this.lexemeIdx+=1,e},o.QueryParser.prototype.nextClause=function(){var e=this.currentClause;this.query.clause(e),this.currentClause={}},o.QueryParser.parseFieldOrTerm=function(e){var t=e.peekLexeme();if(void 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