mkdocs-material/material/assets/javascripts/search.js

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/**
 * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.3.6
 * Copyright (C) 2019 Oliver Nightingale
 * @license MIT
 */!function(){var s,o,a,u,l,c,h,d,f,p,y,m,g,x,v,w,Q,b,S,E,k,P,L,T,O,I,R=function(e){var t=new R.Builder;return t.pipeline.add(R.trimmer,R.stopWordFilter,R.stemmer),t.searchPipeline.add(R.stemmer),e.call(t,t),t.build()};R.version="2.3.6"
/*!
 * lunr.utils
 * Copyright (C) 2019 Oliver Nightingale
 */,R.utils={},R.utils.warn=(s=this,function(e){s.console&&console.warn&&console.warn(e)}),R.utils.asString=function(e){return null==e?"":e.toString()},R.utils.clone=function(e){if(null==e)return e;for(var t=Object.create(null),r=Object.keys(e),n=0;n<r.length;n++){var i=r[n],s=e[i];if(Array.isArray(s))t[i]=s.slice();else{if("string"!=typeof s&&"number"!=typeof s&&"boolean"!=typeof s)throw new TypeError("clone is not deep and does not support nested objects");t[i]=s}}return t},R.FieldRef=function(e,t,r){this.docRef=e,this.fieldName=t,this._stringValue=r},R.FieldRef.joiner="/",R.FieldRef.fromString=function(e){var t=e.indexOf(R.FieldRef.joiner);if(-1===t)throw"malformed field ref string";var r=e.slice(0,t),n=e.slice(t+1);return new R.FieldRef(n,r,e)},R.FieldRef.prototype.toString=function(){return null==this._stringValue&&(this._stringValue=this.fieldName+R.FieldRef.joiner+this.docRef),this._stringValue}
/*!
 * lunr.Set
 * Copyright (C) 2019 Oliver Nightingale
 */,R.Set=function(e){if(this.elements=Object.create(null),e){this.length=e.length;for(var t=0;t<this.length;t++)this.elements[e[t]]=!0}else this.length=0},R.Set.complete={intersect:function(e){return e},union:function(e){return e},contains:function(){return!0}},R.Set.empty={intersect:function(){return this},union:function(e){return e},contains:function(){return!1}},R.Set.prototype.contains=function(e){return!!this.elements[e]},R.Set.prototype.intersect=function(e){var t,r,n,i=[];if(e===R.Set.complete)return this;if(e===R.Set.empty)return e;this.length<e.length?(t=this,r=e):(t=e,r=this),n=Object.keys(t.elements);for(var s=0;s<n.length;s++){var o=n[s];o in r.elements&&i.push(o)}return new R.Set(i)},R.Set.prototype.union=function(e){return e===R.Set.complete?R.Set.complete:e===R.Set.empty?this:new R.Set(Object.keys(this.elements).concat(Object.keys(e.elements)))},R.idf=function(e,t){var r=0;for(var n in e)"_index"!=n&&(r+=Object.keys(e[n]).length);var i=(t-r+.5)/(r+.5);return Math.log(1+Math.abs(i))},R.Token=function(e,t){this.str=e||"",this.metadata=t||{}},R.Token.prototype.toString=function(){return this.str},R.Token.prototype.update=function(e){return this.str=e(this.str,this.metadata),this},R.Token.prototype.clone=function(e){return e=e||function(e){return e},new R.Token(e(this.str,this.metadata),this.metadata)}
/*!
 * lunr.tokenizer
 * Copyright (C) 2019 Oliver Nightingale
 */,R.tokenizer=function(e,t){if(null==e||null==e)return[];if(Array.isArray(e))return e.map((function(e){return new R.Token(R.utils.asString(e).toLowerCase(),R.utils.clone(t))}));for(var r=e.toString().trim().toLowerCase(),n=r.length,i=[],s=0,o=0;s<=n;s++){var a=s-o;if(r.charAt(s).match(R.tokenizer.separator)||s==n){if(a>0){var u=R.utils.clone(t)||{};u.position=[o,a],u.index=i.length,i.push(new R.Token(r.slice(o,s),u))}o=s+1}}return i},R.tokenizer.separator=/[\s\-]+/
/*!
 * lunr.Pipeline
 * Copyright (C) 2019 Oliver Nightingale
 */,R.Pipeline=function(){this._stack=[]},R.Pipeline.registeredFunctions=Object.create(null),R.Pipeline.registerFunction=function(e,t){t in this.registeredFunctions&&R.utils.warn("Overwriting existing registered function: "+t),e.label=t,R.Pipeline.registeredFunctions[e.label]=e},R.Pipeline.warnIfFunctionNotRegistered=function(e){e.label&&e.label in this.registeredFunctions||R.utils.warn("Function is not registered with pipeline. This may cause problems when serialising the index.\n",e)},R.Pipeline.load=function(e){var t=new R.Pipeline;return e.forEach((function(e){var r=R.Pipeline.registeredFunctions[e];if(!r)throw new Error("Cannot load unregistered function: "+e);t.add(r)})),t},R.Pipeline.prototype.add=function(){var e=Array.prototype.slice.call(arguments);e.forEach((function(e){R.Pipeline.warnIfFunctionNotRegistered(e),this._stack.push(e)}),this)},R.Pipeline.prototype.after=function(e,t){R.Pipeline.warnIfFunctionNotRegistered(t);var r=this._stack.indexOf(e);if(-1==r)throw new Error("Cannot find existingFn");r+=1,this._stack.splice(r,0,t)},R.Pipeline.prototype.before=function(e,t){R.Pipeline.warnIfFunctionNotRegistered(t);var r=this._stack.indexOf(e);if(-1==r)throw new Error("Cannot find existingFn");this._stack.splice(r,0,t)},R.Pipeline.prototype.remove=function(e){var t=this._stack.indexOf(e);-1!=t&&this._stack.splice(t,1)},R.Pipeline.prototype.run=function(e){for(var t=this._stack.length,r=0;r<t;r++){for(var n=this._stack[r],i=[],s=0;s<e.length;s++){var o=n(e[s],s,e);if(void 0!==o&&""!==o)if(Array.isArray(o))for(var a=0;a<o.length;a++)i.push(o[a]);else i.push(o)}e=i}return e},R.Pipeline.prototype.runString=function(e,t){var r=new R.Token(e,t);return this.run([r]).map((function(e){return e.toString()}))},R.Pipeline.prototype.reset=function(){this._stack=[]},R.Pipeline.prototype.toJSON=function(){return this._stack.map((function(e){return R.Pipeline.warnIfFunctionNotRegistered(e),e.label}))}
/*!
 * lunr.Vector
 * Copyright (C) 2019 Oliver Nightingale
 */,R.Vector=function(e){this._magnitude=0,this.elements=e||[]},R.Vector.prototype.positionForIndex=function(e){if(0==this.elements.length)return 0;for(var t=0,r=this.elements.length/2,n=r-t,i=Math.floor(n/2),s=this.elements[2*i];n>1&&(s<e&&(t=i),s>e&&(r=i),s!=e);)n=r-t,i=t+Math.floor(n/2),s=this.elements[2*i];return s==e?2*i:s>e?2*i:s<e?2*(i+1):void 0},R.Vector.prototype.insert=function(e,t){this.upsert(e,t,(function(){throw"duplicate index"}))},R.Vector.prototype.upsert=function(e,t,r){this._magnitude=0;var n=this.positionForIndex(e);this.elements[n]==e?this.elements[n+1]=r(this.elements[n+1],t):this.elements.splice(n,0,e,t)},R.Vector.prototype.magnitude=function(){if(this._magnitude)return this._magnitude;for(var e=0,t=this.elements.length,r=1;r<t;r+=2){var n=this.elements[r];e+=n*n}return this._magnitude=Math.sqrt(e)},R.Vector.prototype.dot=function(e){for(var t=0,r=this.elements,n=e.elements,i=r.length,s=n.length,o=0,a=0,u=0,l=0;u<i&&l<s;)(o=r[u])<(a=n[l])?u+=2:o>a?l+=2:o==a&&(t+=r[u+1]*n[l+1],u+=2,l+=2);return t},R.Vector.prototype.similarity=function(e){return this.dot(e)/this.magnitude()||0},R.Vector.prototype.toArray=function(){for(var e=new Array(this.elements.length/2),t=1,r=0;t<this.elements.length;t+=2,r++)e[r]=this.elements[t];return e},R.Vector.prototype.toJSON=function(){return this.elements}
/*!
 * lunr.stemmer
 * Copyright (C) 2019 Oliver Nightingale
 * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt
 */,R.stemmer=(o={ational:"ate",tional:"tion",enci:"ence",anci:"ance",izer:"ize",bli:"ble",alli:"al",entli:"ent",eli:"e",ousli:"ous",ization:"ize",ation:"ate",ator:"ate",alism:"al",iveness:"ive",fulness:"ful",ousness:"ous",aliti:"al",iviti:"ive",biliti:"ble",logi:"log"},a={icate:"ic",ative:"",alize:"al",iciti:"ic",ical:"ic",ful:"",ness:""},u="[aeiouy]",l="[^aeiou][^aeiouy]*",c=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),h=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),d=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*([aeiouy][aeiou]*)?$"),f=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy]"),p=/^(.+?)(ss|i)es$/,y=/^(.+?)([^s])s$/,m=/^(.+?)eed$/,g=/^(.+?)(ed|ing)$/,x=/.$/,v=/(at|bl|iz)$/,w=new RegExp("([^aeiouylsz])\\1$"),Q=new RegExp("^"+l+u+"[^aeiouwxy]$"),b=/^(.+?[^aeiou])y$/,S=/^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/,E=/^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/,k=/^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/,P=/^(.+?)(s|t)(ion)$/,L=/^(.+?)e$/,T=/ll$/,O=new RegExp("^"+l+u+"[^aeiouwxy]$"),I=function(e){var t,r,n,i,s,u,l;if(e.length<3)return e;if("y"==(n=e.substr(0,1))&&(e=n.toUpperCase()+e.substr(1)),s=y,(i=p).test(e)?e=e.replace(i,"$1$2"):s.test(e)&&(e=e.replace(s,"$1$2")),s=g,(i=m).test(e)){var I=i.exec(e);(i=c).test(I[1])&&(i=x,e=e.replace(i,""))}else s.test(e)&&(t=(I=s.exec(e))[1],(s=f).test(t)&&(u=w,l=Q,(s=v).test(e=t)?e+="e":u.test(e)?(i=x,e=e.replace(i,"")):l.test(e)&&(e+="e")));return(i=b).test(e)&&(e=(t=(I=i.exec(e))[1])+"i"),(i=S).test(e)&&(t=(I=i.exec(e))[1],r=I[2],(i=c).test(t)&&(e=t+o[r])),(i=E).test(e)&&(t=(I=i.exec(e))[1],r=I[2],(i=c).test(t)&&(e=t+a[r])),s=P,(i=k).test(e)?(t=(I=i.exec(e))[1],(i=h).test(t)&&(e=t)):s.test(e)&&(t=(I=s.exec(e))[1]+I[2],(s=h).test(t)&&(e=t)),(i=L).test(e)&&(t=(I=i.exec(e))[1],s=d,u=O,((i=h).test(t)||s.test(t)&&!u.test(t))&&(e=t)),s=h,(i=T).test(e)&&s.test(e)&&(i=x,e=e.replace(i,"")),"y"==n&&(e=n.toLowerCase()+e.substr(1)),e},function(e){return e.update(I)}),R.Pipeline.registerFunction(R.stemmer,"stemmer")
/*!
 * lunr.stopWordFilter
 * Copyright (C) 2019 Oliver Nightingale
 */,R.generateStopWordFilter=function(e){var t=e.reduce((function(e,t){return e[t]=t,e}),{});return function(e){if(e&&t[e.toString()]!==e.toString())return e}},R.stopWordFilter=R.generateStopWordFilter(["a","able","about","across","after","all","almost","also","am","among","an","and","any","are","as","at","be","because","been","but","by","can","cannot","could","dear","did","do","does","either","else","ever","every","for","from","get","got","had","has","have","he","her","hers","him","his","how","however","i","if","in","into","is","it","its","just","least","let","like","likely","may","me","might","most","must","my","neither","no","nor","not","of","off","often","on","only","or","other","our","own","rather","said","say","says","she","should","since","so","some","than","that","the","their","them","then","there","these","they","this","tis","to","too","twas","us","wants","was","we","were","what","when","where","which","while","who","whom","why","will","with","would","yet","you","your"]),R.Pipeline.registerFunction(R.stopWordFilter,"stopWordFilter")
/*!
 * lunr.trimmer
 * Copyright (C) 2019 Oliver Nightingale
 */,R.trimmer=function(e){return e.update((function(e){return e.replace(/^\W+/,"").replace(/\W+$/,"")}))},R.Pipeline.registerFunction(R.trimmer,"trimmer")
/*!
 * lunr.TokenSet
 * Copyright (C) 2019 Oliver Nightingale
 */,R.TokenSet=function(){this.final=!1,this.edges={},this.id=R.TokenSet._nextId,R.TokenSet._nextId+=1},R.TokenSet._nextId=1,R.TokenSet.fromArray=function(e){for(var t=new R.TokenSet.Builder,r=0,n=e.length;r<n;r++)t.insert(e[r]);return t.finish(),t.root},R.TokenSet.fromClause=function(e){return"editDistance"in e?R.TokenSet.fromFuzzyString(e.term,e.editDistance):R.TokenSet.fromString(e.term)},R.TokenSet.fromFuzzyString=function(e,t){for(var r=new R.TokenSet,n=[{node:r,editsRemaining:t,str:e}];n.length;){var i=n.pop();if(i.str.length>0){var s,o=i.str.charAt(0);o in i.node.edges?s=i.node.edges[o]:(s=new R.TokenSet,i.node.edges[o]=s),1==i.str.length&&(s.final=!0),n.push({node:s,editsRemaining:i.editsRemaining,str:i.str.slice(1)})}if(0!=i.editsRemaining){if("*"in i.node.edges)var a=i.node.edges["*"];else{a=new R.TokenSet;i.node.edges["*"]=a}if(0==i.str.length&&(a.final=!0),n.push({node:a,editsRemaining:i.editsRemaining-1,str:i.str}),i.str.length>1&&n.push({node:i.node,editsRemaining:i.editsRemaining-1,str:i.str.slice(1)}),1==i.str.length&&(i.node.final=!0),i.str.length>=1){if("*"in i.node.edges)var u=i.node.edges["*"];else{u=new R.TokenSet;i.node.edges["*"]=u}1==i.str.length&&(u.final=!0),n.push({node:u,editsRemaining:i.editsRemaining-1,str:i.str.slice(1)})}if(i.str.length>1){var l,c=i.str.charAt(0),h=i.str.charAt(1);h in i.node.edges?l=i.node.edges[h]:(l=new R.TokenSet,i.node.edges[h]=l),1==i.str.length&&(l.final=!0),n.push({node:l,editsRemaining:i.editsRemaining-1,str:c+i.str.slice(2)})}}}return r},R.TokenSet.fromString=function(e){for(var t=new R.TokenSet,r=t,n=0,i=e.length;n<i;n++){var s=e[n],o=n==i-1;if("*"==s)t.edges[s]=t,t.final=o;else{var a=new R.TokenSet;a.final=o,t.edges[s]=a,t=a}}return r},R.TokenSet.prototype.toArray=function(){for(var e=[],t=[{prefix:"",node:this}];t.length;){var r=t.pop(),n=Object.keys(r.node.edges),i=n.length;r.node.final&&(r.prefix.charAt(0),e.push(r.prefix));for(var s=0;s<i;s++){var o=n[s];t.push({prefix:r.prefix.concat(o),node:r.node.edges[o]})}}return e},R.TokenSet.prototype.toString=function(){if(this._str)return this._str;for(var e=this.final?"1":"0",t=Object.keys(this.edges).sort(),r=t.length,n=0;n<r;n++){var i=t[n];e=e+i+this.edges[i].id}return e},R.TokenSet.prototype.intersect=function(e){for(var t=new R.TokenSet,r=void 0,n=[{qNode:e,output:t,node:this}];n.length;){r=n.pop();for(var i=Object.keys(r.qNode.edges),s=i.length,o=Object.keys(r.node.edges),a=o.length,u=0;u<s;u++)for(var l=i[u],c=0;c<a;c++){var h=o[c];if(h==l||"*"==l){var d=r.node.edges[h],f=r.qNode.edges[l],p=d.final&&f.final,y=void 0;h in r.output.edges?(y=r.output.edges[h]).final=y.final||p:((y=new R.TokenSet).final=p,r.output.edges[h]=y),n.push({qNode:f,output:y,node:d})}}}return t},R.TokenSet.Builder=function(){this.previousWord="",this.root=new R.TokenSet,this.uncheckedNodes=[],this.minimizedNodes={}},R.TokenSet.Builder.prototype.insert=function(e){var t,r=0;if(e<this.previousWord)throw new Error("Out of order word insertion");for(var n=0;n<e.length&&n<this.previousWord.length&&e[n]==this.previousWord[n];n++)r++;this.minimize(r),t=0==this.uncheckedNodes.length?this.root:this.uncheckedNodes[this.uncheckedNodes.length-1].child;for(n=r;n<e.length;n++){var i=new R.TokenSet,s=e[n];t.edges[s]=i,this.uncheckedNodes.push({parent:t,char:s,child:i}),t=i}t.final=!0,this.previousWord=e},R.TokenSet.Builder.prototype.finish=function(){this.minimize(0)},R.TokenSet.Builder.prototype.minimize=function(e){for(var t=this.uncheckedNodes.length-1;t>=e;t--){var r=this.uncheckedNodes[t],n=r.child.toString();n in this.minimizedNodes?r.parent.edges[r.char]=this.minimizedNodes[n]:(r.child._str=n,this.minimizedNodes[n]=r.child),this.uncheckedNodes.pop()}}
/*!
 * lunr.Index
 * Copyright (C) 2019 Oliver Nightingale
 */,R.Index=function(e){this.invertedIndex=e.invertedIndex,this.fieldVectors=e.fieldVectors,this.tokenSet=e.tokenSet,this.fields=e.fields,this.pipeline=e.pipeline},R.Index.prototype.search=function(e){return this.query((function(t){new R.QueryParser(e,t).parse()}))},R.Index.prototype.query=function(e){for(var t=new R.Query(this.fields),r=Object.create(null),n=Object.create(null),i=Object.create(null),s=Object.create(null),o=Object.create(null),a=0;a<this.fields.length;a++)n[this.fields[a]]=new R.Vector;e.call(t,t);for(a=0;a<t.clauses.length;a++){var u=t.clauses[a],l=null,c=R.Set.complete;l=u.usePipeline?this.pipeline.runString(u.term,{fields:u.fields}):[u.term];for(var h=0;h<l.length;h++){var d=l[h];u.term=d;var f=R.TokenSet.fromClause(u),p=this.tokenSet.intersect(f).toArray();if(0===p.length&&u.presence===R.Query.presence.REQUIRED){for(var y=0;y<u.fields.length;y++){s[F=u.fields[y]]=R.Set.empty}break}for(var m=0;m<p.length;m++){var g=p[m],x=this.invertedIndex[g],v=x._index;for(y=0;y<u.fields.length;y++){var w=x[F=u.fields[y]],Q=Object.keys(w),b=g+"/"+F,S=new R.Set(Q);if(u.presence==R.Query.presence.REQUIRED&&(c=c.union(S),void 0===s[F]&&(s[F]=R.Set.complete)),u.presence!=R.Query.presence.PROHIBITED){if(n[F].upsert(v,u.boost,(function(e,t){return e+t})),!i[b]){for(var E=0;E<Q.length;E++){var k,P=Q[E],L=new R.FieldRef(P,F),T=w[P];void 0===(k=r[L])?r[L]=new R.MatchData(g,F,T):k.add(g,F,T)}i[b]=!0}}else void 0===o[F]&&(o[F]=R.Set.empty),o[F]=o[F].union(S)}}}if(u.presence===R.Query.presence.REQUIRED)for(y=0;y<u.fields.length;y++){s[F=u.fields[y]]=s[F].intersect(c)}}var O=R.Set.complete,I=R.Set.empty;for(a=0;a<this.fields.length;a++){var F;s[F=this.fields[a]]&&(O=O.intersect(s[F])),o[F]&&(I=I.union(o[F]))}var j=Object.keys(r),C=[],_=Object.create(null);if(t.isNegated()){j=Object.keys(this.fieldVectors);for(a=0;a<j.length;a++){L=j[a];var N=R.FieldRef.fromString(L);r[L]=new R.MatchData}}for(a=0;a<j.length;a++){var D=(N=R.FieldRef.fromString(j[a])).docRef;if(O.contains(D)&&!I.contains(D)){var A,B=this.fieldVectors[N],M=n[N.fieldName].similarity(B);if(void 0!==(A=_[D]))A.score+=M,A.matchData.combine(r[N]);else{var V={ref:D,score:M,matchData:r[N]};_[D]=V,C.push(V)}}}return C.sort((function(e,t){return t.score-e.score}))},R.Index.prototype.toJSON=function(){var e=Object.keys(this.invertedIndex).sort().map((function(e){return[e,this.invertedIndex[e]]}),this),t=Object.keys(this.fieldVectors).map((function(e){return[e,this.fieldVectors[e].toJSON()]}),this);return{version:R.version,fields:this.fields,fieldVectors:t,invertedIndex:e,pipeline:this.pipeline.toJSON()}},R.Index.load=function(e){var t={},r={},n=e.fieldVectors,i=Object.create(null),s=e.invertedIndex,o=new R.TokenSet.Builder,a=R.Pipeline.load(e.pipeline);e.version!=R.version&&R.utils.warn("Version mismatch when loading serialised index. Current version of lunr '"+R.version+"' does not match serialized index '"+e.version+"'");for(var u=0;u<n.length;u++){var l=(h=n[u])[0],c=h[1];r[l]=new R.Vector(c)}for(u=0;u<s.length;u++){var h,d=(h=s[u])[0],f=h[1];o.insert(d),i[d]=f}return o.finish(),t.fields=e.fields,t.fieldVectors=r,t.invertedIndex=i,t.tokenSet=o.root,t.pipeline=a,new R.Index(t)}
/*!
 * lunr.Builder
 * Copyright (C) 2019 Oliver Nightingale
 */,R.Builder=function(){this._ref="id",this._fields=Object.create(null),this._documents=Object.create(null),this.invertedIndex=Object.create(null),this.fieldTermFrequencies={},this.fieldLengths={},this.tokenizer=R.tokenizer,this.pipeline=new R.Pipeline,this.searchPipeline=new R.Pipeline,this.documentCount=0,this._b=.75,this._k1=1.2,this.termIndex=0,this.metadataWhitelist=[]},R.Builder.prototype.ref=function(e){this._ref=e},R.Builder.prototype.field=function(e,t){if(/\//.test(e))throw new RangeError("Field '"+e+"' contains illegal character '/'");this._fields[e]=t||{}},R.Builder.prototype.b=function(e){this._b=e<0?0:e>1?1:e},R.Builder.prototype.k1=function(e){this._k1=e},R.Builder.prototype.add=function(e,t){var r=e[this._ref],n=Object.keys(this._fields);this._documents[r]=t||{},this.documentCount+=1;for(var i=0;i<n.length;i++){var s=n[i],o=this._fields[s].extractor,a=o?o(e):e[s],u=this.tokenizer(a,{fields:[s]}),l=this.pipeline.run(u),c=new R.FieldRef(r,s),h=Object.create(null);this.fieldTermFrequencies[c]=h,this.fieldLengths[c]=0,this.fieldLengths[c]+=l.length;for(var d=0;d<l.length;d++){var f=l[d];if(null==h[f]&&(h[f]=0),h[f]+=1,null==this.invertedIndex[f]){var p=Object.create(null);p._index=this.termIndex,this.termIndex+=1;for(var y=0;y<n.length;y++)p[n[y]]=Object.create(null);this.invertedIndex[f]=p}null==this.invertedIndex[f][s][r]&&(this.invertedIndex[f][s][r]=Object.create(null));for(var m=0;m<this.metadataWhitelist.length;m++){var g=this.metadataWhitelist[m],x=f.metadata[g];null==this.invertedIndex[f][s][r][g]&&(this.invertedIndex[f][s][r][g]=[]),this.invertedIndex[f][s][r][g].push(x)}}}},R.Builder.prototype.calculateAverageFieldLengths=function(){for(var e=Object.keys(this.fieldLengths),t=e.length,r={},n={},i=0;i<t;i++){var s=R.FieldRef.fromString(e[i]),o=s.fieldName;n[o]||(n[o]=0),n[o]+=1,r[o]||(r[o]=0),r[o]+=this.fieldLengths[s]}var a=Object.keys(this._fields);for(i=0;i<a.length;i++){var u=a[i];r[u]=r[u]/n[u]}this.averageFieldLength=r},R.Builder.prototype.createFieldVectors=function(){for(var e={},t=Object.keys(this.fieldTermFrequencies),r=t.length,n=Object.create(null),i=0;i<r;i++){for(var s=R.FieldRef.fromString(t[i]),o=s.fieldName,a=this.fieldLengths[s],u=new R.Vector,l=this.fieldTermFrequencies[s],c=Object.keys(l),h=c.length,d=this._fields[o].boost||1,f=this._documents[s.docRef].boost||1,p=0;p<h;p++){var y,m,g,x=c[p],v=l[x],w=this.invertedIndex[x]._index;void 0===n[x]?(y=R.idf(this.invertedIndex[x],this.documentCount),n[x]=y):y=n[x],m=y*((this._k1+1)*v)/(this._k1*(1-this._b+this._b*(a/this.averageFieldLength[o]))+v),m*=d,m*=f,g=Math.round(1e3*m)/1e3,u.insert(w,g)}e[s]=u}this.fieldVectors=e},R.Builder.prototype.createTokenSet=function(){this.tokenSet=R.TokenSet.fromArray(Object.keys(this.invertedIndex).sort())},R.Builder.prototype.build=function(){return this.calculateAverageFieldLengths(),this.createFieldVectors(),this.createTokenSet(),new R.Index({invertedIndex:this.invertedIndex,fieldVectors:this.fieldVectors,tokenSet:this.tokenSet,fields:Object.keys(this._fields),pipeline:this.searchPipeline})},R.Builder.prototype.use=function(e){var t=Array.prototype.slice.call(arguments,1);t.unshift(this),e.apply(this,t)},R.MatchData=function(e,t,r){for(var n=Object.create(null),i=Object.keys(r||{}),s=0;s<i.length;s++){var o=i[s];n[o]=r[o].slice()}this.metadata=Object.create(null),void 0!==e&&(this.metadata[e]=Object.create(null),this.metadata[e][t]=n)},R.MatchData.prototype.combine=function(e){for(var t=Object.keys(e.metadata),r=0;r<t.length;r++){var n=t[r],i=Object.keys(e.metadata[n]);null==this.metadata[n]&&(this.metadata[n]=Object.create(null));for(var s=0;s<i.length;s++){var o=i[s],a=Object.keys(e.metadata[n][o]);null==this.metadata[n][o]&&(this.metadata[n][o]=Object.create(null));for(var u=0;u<a.length;u++){var l=a[u];null==this.metadata[n][o][l]?this.metadata[n][o][l]=e.metadata[n][o][l]:this.metadata[n][o][l]=this.metadata[n][o][l].concat(e.metadata[n][o][l])}}}},R.MatchData.prototype.add=function(e,t,r){if(!(e in this.metadata))return this.metadata[e]=Object.create(null),void(this.metadata[e][t]=r);if(t in this.metadata[e])for(var n=Object.keys(r),i=0;i<n.length;i++){var s=n[i];s in this.metadata[e][t]?this.metadata[e][t][s]=this.metadata[e][t][s].concat(r[s]):this.metadata[e][t][s]=r[s]}else this.metadata[e][t]=r},R.Query=function(e){this.clauses=[],this.allFields=e},R.Query.wildcard=new String("*"),R.Query.wildcard.NONE=0,R.Query.wildcard.LEADING=1,R.Query.wildcard.TRAILING=2,R.Query.presence={OPTIONAL:1,REQUIRED:2,PROHIBITED:3},R.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),"wildcard"in e||(e.wildcard=R.Query.wildcard.NONE),e.wildcard&R.Query.wildcard.LEADING&&e.term.charAt(0)!=R.Query.wildcard&&(e.term="*"+e.term),e.wildcard&R.Query.wildcard.TRAILING&&e.term.slice(-1)!=R.Query.wildcard&&(e.term=e.term+"*"),"presence"in e||(e.presence=R.Query.presence.OPTIONAL),this.clauses.push(e),this},R.Query.prototype.isNegated=function(){for(var e=0;e<this.clauses.length;e++)if(this.clauses[e].presence!=R.Query.presence.PROHIBITED)return!1;return!0},R.Query.prototype.term=function(e,t){if(Array.isArray(e))return e.forEach((function(e){this.term(e,R.utils.clone(t))}),this),this;var r=t||{};return r.term=e.toString(),this.clause(r),this},R.QueryParseError=function(e,t,r){this.name="QueryParseError",this.message=e,this.start=t,this.end=r},R.QueryParseError.prototype=new Error,R.QueryLexer=function(e){this.lexemes=[],this.str=e,this.length=e.length,this.pos=0,this.start=0,this.escapeCharPositions=[]},R.QueryLexer.prototype.run=function(){for(var e=R.QueryLexer.lexText;e;)e=e(this)},R.QueryLexer.prototype.sliceString=function(){for(var e=[],t=this.start,r=this.pos,n=0;n<this.escapeCharPositions.length;n++)r=this.escapeCharPositions[n],e.push(this.str.slice(t,r)),t=r+1;return e.push(this.str.slice(t,this.pos)),this.escapeCharPositions.length=0,e.join("")},R.QueryLexer.prototype.emit=function(e){this.lexemes.push({type:e,str:this.sliceString(),start:this.start,end:this.pos}),this.start=this.pos},R.QueryLexer.prototype.escapeCharacter=function(){this.escapeCharPositions.push(this.pos-1),this.pos+=1},R.QueryLexer.prototype.next=function(){if(this.pos>=this.length)return R.QueryLexer.EOS;var e=this.str.charAt(this.pos);return this.pos+=1,e},R.QueryLexer.prototype.width=function(){return this.pos-this.start},R.QueryLexer.prototype.ignore=function(){this.start==this.pos&&(this.pos+=1),this.start=this.pos},R.QueryLexer.prototype.backup=function(){this.pos-=1},R.QueryLexer.prototype.acceptDigitRun=function(){var e,t;do{t=(e=this.next()).charCodeAt(0)}while(t>47&&t<58);e!=R.QueryLexer.EOS&&this.backup()},R.QueryLexer.prototype.more=function(){return this.pos<this.length},R.QueryLexer.EOS="EOS",R.QueryLexer.FIELD="FIELD",R.QueryLexer.TERM="TERM",R.QueryLexer.EDIT_DISTANCE="EDIT_DISTANCE",R.QueryLexer.BOOST="BOOST",R.QueryLexer.PRESENCE="PRESENCE",R.QueryLexer.lexField=function(e){return e.backup(),e.emit(R.QueryLexer.FIELD),e.ignore(),R.QueryLexer.lexText},R.QueryLexer.lexTerm=function(e){if(e.width()>1&&(e.backup(),e.emit(R.QueryLexer.TERM)),e.ignore(),e.more())return R.QueryLexer.lexText},R.QueryLexer.lexEditDistance=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(R.QueryLexer.EDIT_DISTANCE),R.QueryLexer.lexText},R.QueryLexer.lexBoost=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(R.QueryLexer.BOOST),R.QueryLexer.lexText},R.QueryLexer.lexEOS=function(e){e.width()>0&&e.emit(R.QueryLexer.TERM)},R.QueryLexer.termSeparator=R.tokenizer.separator,R.QueryLexer.lexText=function(e){for(;;){var t=e.next();if(t==R.QueryLexer.EOS)return R.QueryLexer.lexEOS;if(92!=t.charCodeAt(0)){if(":"==t)return R.QueryLexer.lexField;if("~"==t)return e.backup(),e.width()>0&&e.emit(R.QueryLexer.TERM),R.QueryLexer.lexEditDistance;if("^"==t)return e.backup(),e.width()>0&&e.emit(R.QueryLexer.TERM),R.QueryLexer.lexBoost;if("+"==t&&1===e.width())return e.emit(R.QueryLexer.PRESENCE),R.QueryLexer.lexText;if("-"==t&&1===e.width())return e.emit(R.QueryLexer.PRESENCE),R.QueryLexer.lexText;if(t.match(R.QueryLexer.termSeparator))return R.QueryLexer.lexTerm}else e.escapeCharacter()}},R.QueryParser=function(e,t){this.lexer=new R.QueryLexer(e),this.query=t,this.currentClause={},this.lexemeIdx=0},R.QueryParser.prototype.parse=function(){this.lexer.run(),this.lexemes=this.lexer.lexemes;for(var e=R.QueryParser.parseClause;e;)e=e(this);return this.query},R.QueryParser.prototype.peekLexeme=function(){return this.lexemes[this.lexemeIdx]},R.QueryParser.prototype.consumeLexeme=function(){var e=this.peekLexeme();return this.lexemeIdx+=1,e},R.QueryParser.prototype.nextClause=function(){var e=this.currentClause;this.query.clause(e),this.currentClause={}},R.QueryParser.parseClause=function(e){var t=e.peekLexeme();if(null!=t)switch(t.type){case R.QueryLexer.PRESENCE:return R.QueryParser.parsePresence;case R.QueryLexer.FIELD:return R.QueryParser.parseField;case R.QueryLexer.TERM:return R.QueryParser.parseTerm;default:var r="expected either a field or a term, found "+t.type;throw t.str.length>=1&&(r+=" with value '"+t.str+"'"),new R.QueryParseError(r,t.start,t.end)}},R.QueryParser.parsePresence=function(e){var t=e.consumeLexeme();if(null!=t){switch(t.str){case"-":e.currentClause.presence=R.Query.presence.PROHIBITED;break;case"+":e.currentClause.presence=R.Query.presence.REQUIRED;break;default:var r="unrecognised presence operator'"+t.str+"'";throw new R.QueryParseError(r,t.start,t.end)}var n=e.peekLexeme();if(null==n){r="expecting term or field, found nothing";throw new R.QueryParseError(r,t.start,t.end)}switch(n.type){case R.QueryLexer.FIELD:return R.QueryParser.parseField;case R.QueryLexer.TERM:return R.QueryParser.parseTerm;default:r="expecting term or field, found '"+n.type+"'";throw new R.QueryParseError(r,n.start,n.end)}}},R.QueryParser.parseField=function(e){var t=e.consumeLexeme();if(null!=t){if(-1==e.query.allFields.indexOf(t.str)){var r=e.query.allFields.map((function(e){return"'"+e+"'"})).join(", "),n="unrecognised field '"+t.str+"', possible fields: "+r;throw new R.QueryParseError(n,t.start,t.end)}e.currentClause.fields=[t.str];var i=e.peekLexeme();if(null==i){n="expecting term, found nothing";throw new R.QueryParseError(n,t.start,t.end)}switch(i.type){case R.QueryLexer.TERM:return R.QueryParser.parseTerm;default:n="expecting term, found '"+i.type+"'";throw new R.QueryParseError(n,i.start,i.end)}}},R.QueryParser.parseTerm=function(e){var t=e.consumeLexeme();if(null!=t){e.currentClause.term=t.str.toLowerCase(),-1!=t.str.indexOf("*")&&(e.currentClause.usePipeline=!1);var r=e.peekLexeme();if(null!=r)switch(r.type){case R.QueryLexer.TERM:return e.nextClause(),R.QueryParser.parseTerm;case R.QueryLexer.FIELD:return e.nextClause(),R.QueryParser.parseField;case R.QueryLexer.EDIT_DISTANCE:return R.QueryParser.parseEditDistance;case R.QueryLexer.BOOST:return R.QueryParser.parseBoost;case R.QueryLexer.PRESENCE:return e.nextClause(),R.QueryParser.parsePresence;default:var n="Unexpected lexeme type '"+r.type+"'";throw new R.QueryParseError(n,r.start,r.end)}else e.nextClause()}},R.QueryParser.parseEditDistance=function(e){var t=e.consumeLexeme();if(null!=t){var r=parseInt(t.str,10);if(isNaN(r)){var n="edit distance must be numeric";throw new R.QueryParseError(n,t.start,t.end)}e.currentClause.editDistance=r;var i=e.peekLexeme();if(null!=i)switch(i.type){case R.QueryLexer.TERM:return e.nextClause(),R.QueryParser.parseTerm;case R.QueryLexer.FIELD:return e.nextClause(),R.QueryParser.parseField;case R.QueryLexer.EDIT_DISTANCE:return R.QueryParser.parseEditDistance;case R.QueryLexer.BOOST:return R.QueryParser.parseBoost;case R.QueryLexer.PRESENCE:return e.nextClause(),R.QueryParser.parsePresence;default:n="Unexpected lexeme type '"+i.type+"'";throw new R.QueryParseError(n,i.start,i.end)}else e.nextClause()}},R.QueryParser.parseBoost=function(e){var t=e.consumeLexeme();if(null!=t){var r=parseInt(t.str,10);if(isNaN(r)){var n="boost must be numeric";throw new R.QueryParseError(n,t.start,t.end)}e.currentClause.boost=r;var i=e.peekLexeme();if(null!=i)switch(i.type){case R.QueryLexer.TERM:return e.nextClause(),R.QueryParser.parseTerm;case R.QueryLexer.FIELD:return e.nextClause(),R.QueryParser.parseField;case R.QueryLexer.EDIT_DISTANCE:return R.QueryParser.parseEditDistance;case R.QueryLexer.BOOST:return R.QueryParser.parseBoost;case R.QueryLexer.PRESENCE:return e.nextClause(),R.QueryParser.parsePresence;default:n="Unexpected lexeme type '"+i.type+"'";throw new R.QueryParseError(n,i.start,i.end)}else e.nextClause()}},void 0===(i="function"==typeof(n=function(){return R})?n.call(t,r,t,e):n)||(e.exports=i)}()},function(e,t,r){"use strict";
/*!
 * escape-html
 * Copyright(c) 2012-2013 TJ Holowaychuk
 * Copyright(c) 2015 Andreas Lubbe
 * Copyright(c) 2015 Tiancheng "Timothy" Gu
 * MIT Licensed
 */var n=/["'&<>]/;e.exports=function(e){var t,r=""+e,i=n.exec(r);if(!i)return r;var s="",o=0,a=0;for(o=i.index;o<r.length;o++){switch(r.charCodeAt(o)){case 34:t="&quot;";break;case 38:t="&amp;";break;case 39:t="&#39;";break;case 60:t="&lt;";break;case 62:t="&gt;";break;default:continue}a!==o&&(s+=r.substring(a,o)),a=o+1,s+=t}return a!==o?s+r.substring(a,o):s}},function(e,t,r){"use strict";const n=/[|\\{}()[\]^$+*?.-]/g;e.exports=e=>{if("string"!=typeof e)throw new TypeError("Expected a string");return e.replace(n,"\\$&")}},function(e,t,r){"use strict";r.r(t);var n=r(0),i=r(1),s=function(e){var t="function"==typeof Symbol&&Symbol.iterator,r=t&&e[t],n=0;if(r)return r.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&n>=e.length&&(e=void 0),{value:e&&e[n++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},o=function(e,t){var r="function"==typeof Symbol&&e[Symbol.iterator];if(!r)return e;var n,i,s=r.call(e),o=[];try{for(;(void 0===t||t-- >0)&&!(n=s.next()).done;)o.push(n.value)}catch(e){i={error:e}}finally{try{n&&!n.done&&(r=s.return)&&r.call(s)}finally{if(i)throw i.error}}return o};var a=r(2),u=function(){return(u=Object.assign||function(e){for(var t,r=1,n=arguments.length;r<n;r++)for(var i in t=arguments[r])Object.prototype.hasOwnProperty.call(t,i)&&(e[i]=t[i]);return e}).apply(this,arguments)};var l,c,h=function(e){var t="function"==typeof Symbol&&Symbol.iterator,r=t&&e[t],n=0;if(r)return r.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&n>=e.length&&(e=void 0),{value:e&&e[n++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},d=function(e,t){var r="function"==typeof Symbol&&e[Symbol.iterator];if(!r)return e;var n,i,s=r.call(e),o=[];try{for(;(void 0===t||t-- >0)&&!(n=s.next()).done;)o.push(n.value)}catch(e){i={error:e}}finally{try{n&&!n.done&&(r=s.return)&&r.call(s)}finally{if(i)throw i.error}}return o},f=function(){for(var e=[],t=0;t<arguments.length;t++)e=e.concat(d(arguments[t]));return e},p=function(){function e(e){var t=e.config,r=e.docs,l=e.pipeline,c=e.index;this.documents=function(e){var t,r,n=new Map;try{for(var a=s(e),u=a.next();!u.done;u=a.next()){var l=u.value,c=o(l.location.split("#"),2),h=c[0],d=c[1],f=l.location,p=l.title,y=i(l.text).replace(/\s+(?=[,.:;!?])/g,"").replace(/\s+/g," ");if(d){var m=n.get(h);m.section?n.set(f,{location:f,title:p,text:y,article:m}):(m.title=l.title,m.text=y,m.section=!0)}else n.set(f,{location:f,title:p,text:y,section:!1})}}catch(e){t={error:e}}finally{try{u&&!u.done&&(r=a.return)&&r.call(a)}finally{if(t)throw t.error}}return n}(r),this.highlight=function(e){var t=new RegExp(e.separator,"img"),r=function(e,t,r){return t+"<em>"+r+"</em>"};return function(n){n=n.replace(/[\s*+-:~^]+/g," ").trim();var i=new RegExp("(^|"+e.separator+")("+a(n).replace(t,"|")+")","img");return function(e){return u(u({},e),{title:e.title.replace(i,r),text:e.text.replace(i,r)})}}}(t),this.index=void 0===c?n((function(){var e,t;l=l||{trimmer:!0,stopwords:!0},this.pipeline.reset(),l.trimmer&&this.pipeline.add(n.trimmer),l.stopwords&&this.pipeline.add(n.stopWordFilter),this.field("title",{boost:10}),this.field("text"),this.ref("location");try{for(var i=h(r),s=i.next();!s.done;s=i.next()){var o=s.value;this.add(o)}}catch(t){e={error:t}}finally{try{s&&!s.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}})):n.Index.load("string"==typeof c?JSON.parse(c):c)}return e.prototype.search=function(e){var t=this;if(e)try{var r=this.index.search(e).reduce((function(e,r){var n=t.documents.get(r.ref);if(void 0!==n)if("article"in n){var i=n.article.location;e.set(i,f(e.get(i)||[],[r]))}else{i=n.location;e.set(i,e.get(i)||[])}return e}),new Map),n=this.highlight(e);return f(r).map((function(e){var r=d(e,2),i=r[0],s=r[1];return{article:n(t.documents.get(i)),sections:s.map((function(e){return n(t.documents.get(e.ref))}))}}))}catch(t){console.warn("Invalid query: "+e+" – see https://bit.ly/2s3ChXG")}return[]},e.prototype.toString=function(){return JSON.stringify(this.index)},e}();function y(e){switch(e.type){case l.SETUP:return c=new p(e.data),{type:l.DUMP,data:c.toString()};case l.QUERY:return{type:l.RESULT,data:c?c.search(e.data):[]};default:throw new TypeError("Invalid message type")}}!function(e){e[e.SETUP=0]="SETUP",e[e.DUMP=1]="DUMP",e[e.QUERY=2]="QUERY",e[e.RESULT=3]="RESULT"}(l||(l={})),r.d(t,"handler",(function(){return y})),addEventListener("message",(function(e){postMessage(y(e.data))}))}]);
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