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3322 lines
258 KiB
3322 lines
258 KiB
(function (global, factory) { |
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : |
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typeof define === 'function' && define.amd ? define(['exports'], factory) : |
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(global = global || self, factory(global.csso = {})); |
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}(this, (function (exports) { 'use strict'; |
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var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {}; |
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function createCommonjsModule(fn, module) { |
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return module = { exports: {} }, fn(module, module.exports), module.exports; |
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} |
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function getCjsExportFromNamespace (n) { |
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return n && n['default'] || n; |
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} |
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var csstree_min = createCommonjsModule(function (module, exports) { |
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a=e.sourceContentFor(r);null!=a&&n.setSourceContent(r,a);})),n},ur.prototype.addMapping=function(e){var t=nr.getArg(e,"generated"),n=nr.getArg(e,"original",null),r=nr.getArg(e,"source",null),i=nr.getArg(e,"name",null);this._skipValidation||this._validateMapping(t,n,r,i),null!=r&&(r=String(r),this._sources.has(r)||this._sources.add(r)),null!=i&&(i=String(i),this._names.has(i)||this._names.add(i)),this._mappings.add({generatedLine:t.line,generatedColumn:t.column,originalLine:null!=n&&n.line,originalColumn:null!=n&&n.column,source:r,name:i});},ur.prototype.setSourceContent=function(e,t){var n=e;null!=this._sourceRoot&&(n=nr.relative(this._sourceRoot,n)),null!=t?(this._sourcesContents||(this._sourcesContents=Object.create(null)),this._sourcesContents[nr.toSetString(n)]=t):this._sourcesContents&&(delete this._sourcesContents[nr.toSetString(n)],0===Object.keys(this._sourcesContents).length&&(this._sourcesContents=null));},ur.prototype.applySourceMap=function(e,t,n){var 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this.eat(qi),{type:"CDC",loc:this.getLocation(e,this.scanner.tokenStart)}},generate:function(){this.chunk("--\x3e");}},Ui=Ce.TYPE.CDO,Hi={name:"CDO",structure:[],parse:function(){var e=this.scanner.tokenStart;return this.eat(Ui),{type:"CDO",loc:this.getLocation(e,this.scanner.tokenStart)}},generate:function(){this.chunk("\x3c!--");}},Vi=Ce.TYPE.Ident,Ki={name:"ClassSelector",structure:{name:String},parse:function(){return this.scanner.isDelim(46)||this.error("Full stop is expected"),this.scanner.next(),{type:"ClassSelector",loc:this.getLocation(this.scanner.tokenStart-1,this.scanner.tokenEnd),name:this.consume(Vi)}},generate:function(e){this.chunk("."),this.chunk(e.name);}},Gi=Ce.TYPE.Ident,Qi={name:"Combinator",structure:{name:String},parse:function(){var e=this.scanner.tokenStart;switch(this.scanner.source.charCodeAt(this.scanner.tokenStart)){case 62:case 43:case 126:this.scanner.next();break;case 47:this.scanner.next(),this.scanner.tokenType===Gi&&!1!==this.scanner.lookupValue(0,"deep")||this.error("Identifier `deep` is expected"),this.scanner.next(),this.scanner.isDelim(47)||this.error("Solidus is expected"),this.scanner.next();break;default:this.error("Combinator is expected");}return {type:"Combinator",loc:this.getLocation(e,this.scanner.tokenStart),name:this.scanner.substrToCursor(e)}},generate:function(e){this.chunk(e.name);}},Xi=Ce.TYPE.Comment,Zi={name:"Comment",structure:{value:String},parse:function(){var e=this.scanner.tokenStart,t=this.scanner.tokenEnd;return this.eat(Xi),t-e+2>=2&&42===this.scanner.source.charCodeAt(t-2)&&47===this.scanner.source.charCodeAt(t-1)&&(t-=2),{type:"Comment",loc:this.getLocation(e,this.scanner.tokenStart),value:this.scanner.source.substring(e+2,t)}},generate:function(e){this.chunk("/*"),this.chunk(e.value),this.chunk("*/");}},$i=ae.isCustomProperty,Ji=Ce.TYPE,ea=ni.mode,ta=Ji.Ident,na=Ji.Hash,ra=Ji.Colon,ia=Ji.Semicolon,aa=Ji.Delim,oa=Ji.WhiteSpace;function sa(e){return this.Raw(e,ea.exclamationMarkOrSemicolon,!0)}function la(e){return this.Raw(e,ea.exclamationMarkOrSemicolon,!1)}function ca(){var e=this.scanner.tokenIndex,t=this.Value();return "Raw"!==t.type&&!1===this.scanner.eof&&this.scanner.tokenType!==ia&&!1===this.scanner.isDelim(33)&&!1===this.scanner.isBalanceEdge(e)&&this.error(),t}var ua={name:"Declaration",structure:{important:[Boolean,String],property:String,value:["Value","Raw"]},parse:function(){var e,t=this.scanner.tokenStart,n=this.scanner.tokenIndex,r=ha.call(this),i=$i(r),a=i?this.parseCustomProperty:this.parseValue,o=i?la:sa,s=!1;this.scanner.skipSC(),this.eat(ra);const l=this.scanner.tokenIndex;if(i||this.scanner.skipSC(),e=a?this.parseWithFallback(ca,o):o.call(this,this.scanner.tokenIndex),i&&"Value"===e.type&&e.children.isEmpty())for(let t=l-this.scanner.tokenIndex;t<=0;t++)if(this.scanner.lookupType(t)===oa){e.children.appendData({type:"WhiteSpace",loc:null,value:" "});break}return this.scanner.isDelim(33)&&(s=pa.call(this),this.scanner.skipSC()),!1===this.scanner.eof&&this.scanner.tokenType!==ia&&!1===this.scanner.isBalanceEdge(n)&&this.error(),{type:"Declaration",loc:this.getLocation(t,this.scanner.tokenStart),important:s,property:r,value:e}},generate:function(e){this.chunk(e.property),this.chunk(":"),this.node(e.value),e.important&&this.chunk(!0===e.important?"!important":"!"+e.important);},walkContext:"declaration"};function ha(){var e=this.scanner.tokenStart;if(this.scanner.tokenType===aa)switch(this.scanner.source.charCodeAt(this.scanner.tokenStart)){case 42:case 36:case 43:case 35:case 38:this.scanner.next();break;case 47:this.scanner.next(),this.scanner.isDelim(47)&&this.scanner.next();}return this.scanner.tokenType===na?this.eat(na):this.eat(ta),this.scanner.substrToCursor(e)}function pa(){this.eat(aa),this.scanner.skipSC();var e=this.consume(ta);return "important"===e||e}var da=Ce.TYPE,ma=ni.mode,ga=da.WhiteSpace,fa=da.Comment,ba=da.Semicolon;function ya(e){return this.Raw(e,ma.semicolonIncluded,!0)}var ka={name:"DeclarationList",structure:{children:[["Declaration"]]},parse:function(){for(var e=this.createList();!this.scanner.eof;)switch(this.scanner.tokenType){case ga:case fa:case ba:this.scanner.next();break;default:e.push(this.parseWithFallback(this.Declaration,ya));}return {type:"DeclarationList",loc:this.getLocationFromList(e),children:e}},generate:function(e){this.children(e,(function(e){"Declaration"===e.type&&this.chunk(";");}));}},va=M.consumeNumber,xa=Ce.TYPE.Dimension,wa={name:"Dimension",structure:{value:String,unit:String},parse:function(){var e=this.scanner.tokenStart,t=va(this.scanner.source,e);return this.eat(xa),{type:"Dimension",loc:this.getLocation(e,this.scanner.tokenStart),value:this.scanner.source.substring(e,t),unit:this.scanner.source.substring(t,this.scanner.tokenStart)}},generate:function(e){this.chunk(e.value),this.chunk(e.unit);}},Sa=Ce.TYPE.RightParenthesis,Ca={name:"Function",structure:{name:String,children:[[]]},parse:function(e,t){var n,r=this.scanner.tokenStart,i=this.consumeFunctionName(),a=i.toLowerCase();return n=t.hasOwnProperty(a)?t[a].call(this,t):e.call(this,t),this.scanner.eof||this.eat(Sa),{type:"Function",loc:this.getLocation(r,this.scanner.tokenStart),name:i,children:n}},generate:function(e){this.chunk(e.name),this.chunk("("),this.children(e),this.chunk(")");},walkContext:"function"},za=Ce.TYPE.Hash,Aa={name:"Hash",structure:{value:String},parse:function(){var e=this.scanner.tokenStart;return this.eat(za),{type:"Hash",loc:this.getLocation(e,this.scanner.tokenStart),value:this.scanner.substrToCursor(e+1)}},generate:function(e){this.chunk("#"),this.chunk(e.value);}},Pa=Ce.TYPE.Ident,Ta={name:"Identifier",structure:{name:String},parse:function(){return {type:"Identifier",loc:this.getLocation(this.scanner.tokenStart,this.scanner.tokenEnd),name:this.consume(Pa)}},generate:function(e){this.chunk(e.name);}},La=Ce.TYPE.Hash,Ea={name:"IdSelector",structure:{name:String},parse:function(){var e=this.scanner.tokenStart;return this.eat(La),{type:"IdSelector",loc:this.getLocation(e,this.scanner.tokenStart),name:this.scanner.substrToCursor(e+1)}},generate:function(e){this.chunk("#"),this.chunk(e.name);}},Da=Ce.TYPE,Oa=Da.Ident,Ba=Da.Number,Ia=Da.Dimension,Na=Da.LeftParenthesis,Ra=Da.RightParenthesis,Ma=Da.Colon,ja=Da.Delim,_a={name:"MediaFeature",structure:{name:String,value:["Identifier","Number","Dimension","Ratio",null]},parse:function(){var e,t=this.scanner.tokenStart,n=null;if(this.eat(Na),this.scanner.skipSC(),e=this.consume(Oa),this.scanner.skipSC(),this.scanner.tokenType!==Ra){switch(this.eat(Ma),this.scanner.skipSC(),this.scanner.tokenType){case Ba:n=this.lookupNonWSType(1)===ja?this.Ratio():this.Number();break;case Ia:n=this.Dimension();break;case Oa:n=this.Identifier();break;default:this.error("Number, dimension, ratio or identifier is expected");}this.scanner.skipSC();}return this.eat(Ra),{type:"MediaFeature",loc:this.getLocation(t,this.scanner.tokenStart),name:e,value:n}},generate:function(e){this.chunk("("),this.chunk(e.name),null!==e.value&&(this.chunk(":"),this.node(e.value)),this.chunk(")");}},Fa=Ce.TYPE,Wa=Fa.WhiteSpace,qa=Fa.Comment,Ya=Fa.Ident,Ua=Fa.LeftParenthesis,Ha={name:"MediaQuery",structure:{children:[["Identifier","MediaFeature","WhiteSpace"]]},parse:function(){this.scanner.skipSC();var e=this.createList(),t=null,n=null;e:for(;!this.scanner.eof;){switch(this.scanner.tokenType){case qa:this.scanner.next();continue;case Wa:n=this.WhiteSpace();continue;case Ya:t=this.Identifier();break;case Ua:t=this.MediaFeature();break;default:break e}null!==n&&(e.push(n),n=null),e.push(t);}return null===t&&this.error("Identifier or parenthesis is expected"),{type:"MediaQuery",loc:this.getLocationFromList(e),children:e}},generate:function(e){this.children(e);}},Va=Ce.TYPE.Comma,Ka={name:"MediaQueryList",structure:{children:[["MediaQuery"]]},parse:function(e){var t=this.createList();for(this.scanner.skipSC();!this.scanner.eof&&(t.push(this.MediaQuery(e)),this.scanner.tokenType===Va);)this.scanner.next();return {type:"MediaQueryList",loc:this.getLocationFromList(t),children:t}},generate:function(e){this.children(e,(function(){this.chunk(",");}));}},Ga=Ce.TYPE.Number,Qa={name:"Number",structure:{value:String},parse:function(){return {type:"Number",loc:this.getLocation(this.scanner.tokenStart,this.scanner.tokenEnd),value:this.consume(Ga)}},generate:function(e){this.chunk(e.value);}},Xa={name:"Operator",structure:{value:String},parse:function(){var e=this.scanner.tokenStart;return this.scanner.next(),{type:"Operator",loc:this.getLocation(e,this.scanner.tokenStart),value:this.scanner.substrToCursor(e)}},generate:function(e){this.chunk(e.value);}},Za=Ce.TYPE,$a=Za.LeftParenthesis,Ja=Za.RightParenthesis,eo={name:"Parentheses",structure:{children:[[]]},parse:function(e,t){var n,r=this.scanner.tokenStart;return this.eat($a),n=e.call(this,t),this.scanner.eof||this.eat(Ja),{type:"Parentheses",loc:this.getLocation(r,this.scanner.tokenStart),children:n}},generate:function(e){this.chunk("("),this.children(e),this.chunk(")");}},to=M.consumeNumber,no=Ce.TYPE.Percentage,ro={name:"Percentage",structure:{value:String},parse:function(){var e=this.scanner.tokenStart,t=to(this.scanner.source,e);return this.eat(no),{type:"Percentage",loc:this.getLocation(e,this.scanner.tokenStart),value:this.scanner.source.substring(e,t)}},generate:function(e){this.chunk(e.value),this.chunk("%");}},io=Ce.TYPE,ao=io.Ident,oo=io.Function,so=io.Colon,lo=io.RightParenthesis,co={name:"PseudoClassSelector",structure:{name:String,children:[["Raw"],null]},parse:function(){var e,t,n=this.scanner.tokenStart,r=null;return this.eat(so),this.scanner.tokenType===oo?(t=(e=this.consumeFunctionName()).toLowerCase(),this.pseudo.hasOwnProperty(t)?(this.scanner.skipSC(),r=this.pseudo[t].call(this),this.scanner.skipSC()):(r=this.createList()).push(this.Raw(this.scanner.tokenIndex,null,!1)),this.eat(lo)):e=this.consume(ao),{type:"PseudoClassSelector",loc:this.getLocation(n,this.scanner.tokenStart),name:e,children:r}},generate:function(e){this.chunk(":"),this.chunk(e.name),null!==e.children&&(this.chunk("("),this.children(e),this.chunk(")"));},walkContext:"function"},uo=Ce.TYPE,ho=uo.Ident,po=uo.Function,mo=uo.Colon,go=uo.RightParenthesis,fo={name:"PseudoElementSelector",structure:{name:String,children:[["Raw"],null]},parse:function(){var e,t,n=this.scanner.tokenStart,r=null;return this.eat(mo),this.eat(mo),this.scanner.tokenType===po?(t=(e=this.consumeFunctionName()).toLowerCase(),this.pseudo.hasOwnProperty(t)?(this.scanner.skipSC(),r=this.pseudo[t].call(this),this.scanner.skipSC()):(r=this.createList()).push(this.Raw(this.scanner.tokenIndex,null,!1)),this.eat(go)):e=this.consume(ho),{type:"PseudoElementSelector",loc:this.getLocation(n,this.scanner.tokenStart),name:e,children:r}},generate:function(e){this.chunk("::"),this.chunk(e.name),null!==e.children&&(this.chunk("("),this.children(e),this.chunk(")"));},walkContext:"function"},bo=Ce.isDigit,yo=Ce.TYPE,ko=yo.Number,vo=yo.Delim;function xo(){this.scanner.skipWS();for(var e=this.consume(ko),t=0;t<e.length;t++){var n=e.charCodeAt(t);bo(n)||46===n||this.error("Unsigned number is expected",this.scanner.tokenStart-e.length+t);}return 0===Number(e)&&this.error("Zero number is not allowed",this.scanner.tokenStart-e.length),e}var wo={name:"Ratio",structure:{left:String,right:String},parse:function(){var e,t=this.scanner.tokenStart,n=xo.call(this);return this.scanner.skipWS(),this.scanner.isDelim(47)||this.error("Solidus is expected"),this.eat(vo),e=xo.call(this),{type:"Ratio",loc:this.getLocation(t,this.scanner.tokenStart),left:n,right:e}},generate:function(e){this.chunk(e.left),this.chunk("/"),this.chunk(e.right);}},So=Ce.TYPE,Co=ni.mode,zo=So.LeftCurlyBracket;function Ao(e){return this.Raw(e,Co.leftCurlyBracket,!0)}function Po(){var e=this.SelectorList();return "Raw"!==e.type&&!1===this.scanner.eof&&this.scanner.tokenType!==zo&&this.error(),e}var To={name:"Rule",structure:{prelude:["SelectorList","Raw"],block:["Block"]},parse:function(){var e,t,n=this.scanner.tokenIndex,r=this.scanner.tokenStart;return e=this.parseRulePrelude?this.parseWithFallback(Po,Ao):Ao.call(this,n),t=this.Block(!0),{type:"Rule",loc:this.getLocation(r,this.scanner.tokenStart),prelude:e,block:t}},generate:function(e){this.node(e.prelude),this.node(e.block);},walkContext:"rule"},Lo=Ce.TYPE.Comma,Eo={name:"SelectorList",structure:{children:[["Selector","Raw"]]},parse:function(){for(var e=this.createList();!this.scanner.eof&&(e.push(this.Selector()),this.scanner.tokenType===Lo);)this.scanner.next();return {type:"SelectorList",loc:this.getLocationFromList(e),children:e}},generate:function(e){this.children(e,(function(){this.chunk(",");}));},walkContext:"selector"},Do=Ce.TYPE.String,Oo={name:"String",structure:{value:String},parse:function(){return {type:"String",loc:this.getLocation(this.scanner.tokenStart,this.scanner.tokenEnd),value:this.consume(Do)}},generate:function(e){this.chunk(e.value);}},Bo=Ce.TYPE,Io=Bo.WhiteSpace,No=Bo.Comment,Ro=Bo.AtKeyword,Mo=Bo.CDO,jo=Bo.CDC;function _o(e){return this.Raw(e,null,!1)}var Fo={name:"StyleSheet",structure:{children:[["Comment","CDO","CDC","Atrule","Rule","Raw"]]},parse:function(){for(var e,t=this.scanner.tokenStart,n=this.createList();!this.scanner.eof;){switch(this.scanner.tokenType){case Io:this.scanner.next();continue;case No:if(33!==this.scanner.source.charCodeAt(this.scanner.tokenStart+2)){this.scanner.next();continue}e=this.Comment();break;case Mo:e=this.CDO();break;case jo:e=this.CDC();break;case Ro:e=this.parseWithFallback(this.Atrule,_o);break;default:e=this.parseWithFallback(this.Rule,_o);}n.push(e);}return {type:"StyleSheet",loc:this.getLocation(t,this.scanner.tokenStart),children:n}},generate:function(e){this.children(e);},walkContext:"stylesheet"},Wo=Ce.TYPE.Ident;function qo(){this.scanner.tokenType!==Wo&&!1===this.scanner.isDelim(42)&&this.error("Identifier or asterisk is expected"),this.scanner.next();}var Yo={name:"TypeSelector",structure:{name:String},parse:function(){var e=this.scanner.tokenStart;return this.scanner.isDelim(124)?(this.scanner.next(),qo.call(this)):(qo.call(this),this.scanner.isDelim(124)&&(this.scanner.next(),qo.call(this))),{type:"TypeSelector",loc:this.getLocation(e,this.scanner.tokenStart),name:this.scanner.substrToCursor(e)}},generate:function(e){this.chunk(e.name);}},Uo=Ce.isHexDigit,Ho=Ce.cmpChar,Vo=Ce.TYPE,Ko=Ce.NAME,Go=Vo.Ident,Qo=Vo.Number,Xo=Vo.Dimension;function Zo(e,t){for(var n=this.scanner.tokenStart+e,r=0;n<this.scanner.tokenEnd;n++){var i=this.scanner.source.charCodeAt(n);if(45===i&&t&&0!==r)return 0===Zo.call(this,e+r+1,!1)&&this.error(),-1;Uo(i)||this.error(t&&0!==r?"HyphenMinus"+(r<6?" or hex digit":"")+" is expected":r<6?"Hex digit is expected":"Unexpected input",n),++r>6&&this.error("Too many hex digits",n);}return this.scanner.next(),r}function $o(e){for(var t=0;this.scanner.isDelim(63);)++t>e&&this.error("Too many question marks"),this.scanner.next();}function Jo(e){this.scanner.source.charCodeAt(this.scanner.tokenStart)!==e&&this.error(Ko[e]+" is expected");}function es(){var e=0;return this.scanner.isDelim(43)?(this.scanner.next(),this.scanner.tokenType===Go?void((e=Zo.call(this,0,!0))>0&&$o.call(this,6-e)):this.scanner.isDelim(63)?(this.scanner.next(),void $o.call(this,5)):void this.error("Hex digit or question mark is expected")):this.scanner.tokenType===Qo?(Jo.call(this,43),e=Zo.call(this,1,!0),this.scanner.isDelim(63)?void $o.call(this,6-e):this.scanner.tokenType===Xo||this.scanner.tokenType===Qo?(Jo.call(this,45),void Zo.call(this,1,!1)):void 0):this.scanner.tokenType===Xo?(Jo.call(this,43),void((e=Zo.call(this,1,!0))>0&&$o.call(this,6-e))):void this.error()}var ts={name:"UnicodeRange",structure:{value:String},parse:function(){var e=this.scanner.tokenStart;return Ho(this.scanner.source,e,117)||this.error("U is expected"),Ho(this.scanner.source,e+1,43)||this.error("Plus sign is expected"),this.scanner.next(),es.call(this),{type:"UnicodeRange",loc:this.getLocation(e,this.scanner.tokenStart),value:this.scanner.substrToCursor(e)}},generate:function(e){this.chunk(e.value);}},ns=Ce.isWhiteSpace,rs=Ce.cmpStr,is=Ce.TYPE,as=is.Function,os=is.Url,ss=is.RightParenthesis,ls={name:"Url",structure:{value:["String","Raw"]},parse:function(){var e,t=this.scanner.tokenStart;switch(this.scanner.tokenType){case os:for(var n=t+4,r=this.scanner.tokenEnd-1;n<r&&ns(this.scanner.source.charCodeAt(n));)n++;for(;n<r&&ns(this.scanner.source.charCodeAt(r-1));)r--;e={type:"Raw",loc:this.getLocation(n,r),value:this.scanner.source.substring(n,r)},this.eat(os);break;case as:rs(this.scanner.source,this.scanner.tokenStart,this.scanner.tokenEnd,"url(")||this.error("Function name must be `url`"),this.eat(as),this.scanner.skipSC(),e=this.String(),this.scanner.skipSC(),this.eat(ss);break;default:this.error("Url or Function is expected");}return {type:"Url",loc:this.getLocation(t,this.scanner.tokenStart),value:e}},generate:function(e){this.chunk("url"),this.chunk("("),this.node(e.value),this.chunk(")");}},cs=Ce.TYPE.WhiteSpace,us=Object.freeze({type:"WhiteSpace",loc:null,value:" "}),hs={AnPlusB:Gr,Atrule:hi,AtrulePrelude:gi,AttributeSelector:Ci,Block:Mi,Brackets:Wi,CDC:Yi,CDO:Hi,ClassSelector:Ki,Combinator:Qi,Comment:Zi,Declaration:ua,DeclarationList:ka,Dimension:wa,Function:Ca,Hash:Aa,Identifier:Ta,IdSelector:Ea,MediaFeature:_a,MediaQuery:Ha,MediaQueryList:Ka,Nth:{name:"Nth",structure:{nth:["AnPlusB","Identifier"],selector:["SelectorList",null]},parse:function(e){this.scanner.skipSC();var t,n=this.scanner.tokenStart,r=n,i=null;return t=this.scanner.lookupValue(0,"odd")||this.scanner.lookupValue(0,"even")?this.Identifier():this.AnPlusB(),this.scanner.skipSC(),e&&this.scanner.lookupValue(0,"of")?(this.scanner.next(),i=this.SelectorList(),this.needPositions&&(r=this.getLastListNode(i.children).loc.end.offset)):this.needPositions&&(r=t.loc.end.offset),{type:"Nth",loc:this.getLocation(n,r),nth:t,selector:i}},generate:function(e){this.node(e.nth),null!==e.selector&&(this.chunk(" of "),this.node(e.selector));}},Number:Qa,Operator:Xa,Parentheses:eo,Percentage:ro,PseudoClassSelector:co,PseudoElementSelector:fo,Ratio:wo,Raw:ni,Rule:To,Selector:{name:"Selector",structure:{children:[["TypeSelector","IdSelector","ClassSelector","AttributeSelector","PseudoClassSelector","PseudoElementSelector","Combinator","WhiteSpace"]]},parse:function(){var e=this.readSequence(this.scope.Selector);return null===this.getFirstListNode(e)&&this.error("Selector is expected"),{type:"Selector",loc:this.getLocationFromList(e),children:e}},generate:function(e){this.children(e);}},SelectorList:Eo,String:Oo,StyleSheet:Fo,TypeSelector:Yo,UnicodeRange:ts,Url:ls,Value:{name:"Value",structure:{children:[[]]},parse:function(){var e=this.scanner.tokenStart,t=this.readSequence(this.scope.Value);return {type:"Value",loc:this.getLocation(e,this.scanner.tokenStart),children:t}},generate:function(e){this.children(e);}},WhiteSpace:{name:"WhiteSpace",structure:{value:String},parse:function(){return this.eat(cs),us},generate:function(e){this.chunk(e.value);}}},ps={generic:!0,types:Nr.types,atrules:Nr.atrules,properties:Nr.properties,node:hs},ds=Ce.cmpChar,ms=Ce.cmpStr,gs=Ce.TYPE,fs=gs.Ident,bs=gs.String,ys=gs.Number,ks=gs.Function,vs=gs.Url,xs=gs.Hash,ws=gs.Dimension,Ss=gs.Percentage,Cs=gs.LeftParenthesis,zs=gs.LeftSquareBracket,As=gs.Comma,Ps=gs.Delim,Ts=function(e){switch(this.scanner.tokenType){case xs:return this.Hash();case As:return e.space=null,e.ignoreWSAfter=!0,this.Operator();case Cs:return this.Parentheses(this.readSequence,e.recognizer);case zs:return this.Brackets(this.readSequence,e.recognizer);case bs:return this.String();case ws:return this.Dimension();case Ss:return this.Percentage();case ys:return this.Number();case ks:return ms(this.scanner.source,this.scanner.tokenStart,this.scanner.tokenEnd,"url(")?this.Url():this.Function(this.readSequence,e.recognizer);case vs:return this.Url();case fs:return ds(this.scanner.source,this.scanner.tokenStart,117)&&ds(this.scanner.source,this.scanner.tokenStart+1,43)?this.UnicodeRange():this.Identifier();case Ps:var t=this.scanner.source.charCodeAt(this.scanner.tokenStart);if(47===t||42===t||43===t||45===t)return this.Operator();35===t&&this.error("Hex or identifier is expected",this.scanner.tokenStart+1);}},Ls={getNode:Ts},Es=Ce.TYPE,Ds=Es.Delim,Os=Es.Ident,Bs=Es.Dimension,Is=Es.Percentage,Ns=Es.Number,Rs=Es.Hash,Ms=Es.Colon,js=Es.LeftSquareBracket;var _s={getNode:function(e){switch(this.scanner.tokenType){case js:return this.AttributeSelector();case Rs:return this.IdSelector();case Ms:return this.scanner.lookupType(1)===Ms?this.PseudoElementSelector():this.PseudoClassSelector();case Os:return this.TypeSelector();case Ns:case Is:return this.Percentage();case Bs:46===this.scanner.source.charCodeAt(this.scanner.tokenStart)&&this.error("Identifier is expected",this.scanner.tokenStart+1);break;case Ds:switch(this.scanner.source.charCodeAt(this.scanner.tokenStart)){case 43:case 62:case 126:return e.space=null,e.ignoreWSAfter=!0,this.Combinator();case 47:return this.Combinator();case 46:return this.ClassSelector();case 42:case 124:return this.TypeSelector();case 35:return this.IdSelector()}}}},Fs=Ce.TYPE,Ws=ni.mode,qs=Fs.Comma,Ys=Fs.WhiteSpace,Us={AtrulePrelude:Ls,Selector:_s,Value:{getNode:Ts,expression:function(){return this.createSingleNodeList(this.Raw(this.scanner.tokenIndex,null,!1))},var:function(){var e=this.createList();if(this.scanner.skipSC(),e.push(this.Identifier()),this.scanner.skipSC(),this.scanner.tokenType===qs){e.push(this.Operator());const t=this.scanner.tokenIndex,n=this.parseCustomProperty?this.Value(null):this.Raw(this.scanner.tokenIndex,Ws.exclamationMarkOrSemicolon,!1);if("Value"===n.type&&n.children.isEmpty())for(let e=t-this.scanner.tokenIndex;e<=0;e++)if(this.scanner.lookupType(e)===Ys){n.children.appendData({type:"WhiteSpace",loc:null,value:" "});break}e.push(n);}return e}}},Hs=Ce.TYPE,Vs=Hs.String,Ks=Hs.Ident,Gs=Hs.Url,Qs=Hs.Function,Xs=Hs.LeftParenthesis,Zs={parse:{prelude:function(){var e=this.createList();switch(this.scanner.skipSC(),this.scanner.tokenType){case Vs:e.push(this.String());break;case Gs:case Qs:e.push(this.Url());break;default:this.error("String or url() is expected");}return this.lookupNonWSType(0)!==Ks&&this.lookupNonWSType(0)!==Xs||(e.push(this.WhiteSpace()),e.push(this.MediaQueryList())),e},block:null}},$s=Ce.TYPE,Js=$s.WhiteSpace,el=$s.Comment,tl=$s.Ident,nl=$s.Function,rl=$s.Colon,il=$s.LeftParenthesis;function al(){return this.createSingleNodeList(this.Raw(this.scanner.tokenIndex,null,!1))}function ol(){return this.scanner.skipSC(),this.scanner.tokenType===tl&&this.lookupNonWSType(1)===rl?this.createSingleNodeList(this.Declaration()):sl.call(this)}function sl(){var e,t=this.createList(),n=null;this.scanner.skipSC();e:for(;!this.scanner.eof;){switch(this.scanner.tokenType){case Js:n=this.WhiteSpace();continue;case el:this.scanner.next();continue;case nl:e=this.Function(al,this.scope.AtrulePrelude);break;case tl:e=this.Identifier();break;case il:e=this.Parentheses(ol,this.scope.AtrulePrelude);break;default:break e}null!==n&&(t.push(n),n=null),t.push(e);}return t}var ll,cl={parse:function(){return this.createSingleNodeList(this.SelectorList())}},ul={parse:function(){return this.createSingleNodeList(this.Nth(!0))}},hl={parse:function(){return this.createSingleNodeList(this.Nth(!1))}},pl={parseContext:{default:"StyleSheet",stylesheet:"StyleSheet",atrule:"Atrule",atrulePrelude:function(e){return this.AtrulePrelude(e.atrule?String(e.atrule):null)},mediaQueryList:"MediaQueryList",mediaQuery:"MediaQuery",rule:"Rule",selectorList:"SelectorList",selector:"Selector",block:function(){return this.Block(!0)},declarationList:"DeclarationList",declaration:"Declaration",value:"Value"},scope:Us,atrule:{"font-face":{parse:{prelude:null,block:function(){return this.Block(!0)}}},import:Zs,media:{parse:{prelude:function(){return this.createSingleNodeList(this.MediaQueryList())},block:function(){return this.Block(!1)}}},page:{parse:{prelude:function(){return this.createSingleNodeList(this.SelectorList())},block:function(){return this.Block(!0)}}},supports:{parse:{prelude:function(){var e=sl.call(this);return null===this.getFirstListNode(e)&&this.error("Condition is expected"),e},block:function(){return this.Block(!1)}}}},pseudo:{dir:{parse:function(){return this.createSingleNodeList(this.Identifier())}},has:{parse:function(){return this.createSingleNodeList(this.SelectorList())}},lang:{parse:function(){return this.createSingleNodeList(this.Identifier())}},matches:cl,not:cl,"nth-child":ul,"nth-last-child":ul,"nth-last-of-type":hl,"nth-of-type":hl,slotted:{parse:function(){return this.createSingleNodeList(this.Selector())}}},node:hs},dl={node:hs},ml={version:"1.1.2"},gl=(ll=Object.freeze({__proto__:null,version:"1.1.2",default:ml}))&&ll.default||ll;var fl=Ir(function(){for(var e={},t=0;t<arguments.length;t++){var n=arguments[t];for(var r in n)e[r]=n[r];}return e}(ps,pl,dl)),bl=gl.version;return fl.version=bl,fl})); |
|
}); |
|
|
|
var hasOwnProperty = Object.prototype.hasOwnProperty; |
|
|
|
function buildMap(list, caseInsensitive) { |
|
var map = Object.create(null); |
|
|
|
if (!Array.isArray(list)) { |
|
return null; |
|
} |
|
|
|
for (var i = 0; i < list.length; i++) { |
|
var name = list[i]; |
|
|
|
if (caseInsensitive) { |
|
name = name.toLowerCase(); |
|
} |
|
|
|
map[name] = true; |
|
} |
|
|
|
return map; |
|
} |
|
|
|
function buildList(data) { |
|
if (!data) { |
|
return null; |
|
} |
|
|
|
var tags = buildMap(data.tags, true); |
|
var ids = buildMap(data.ids); |
|
var classes = buildMap(data.classes); |
|
|
|
if (tags === null && |
|
ids === null && |
|
classes === null) { |
|
return null; |
|
} |
|
|
|
return { |
|
tags: tags, |
|
ids: ids, |
|
classes: classes |
|
}; |
|
} |
|
|
|
function buildIndex(data) { |
|
var scopes = false; |
|
|
|
if (data.scopes && Array.isArray(data.scopes)) { |
|
scopes = Object.create(null); |
|
|
|
for (var i = 0; i < data.scopes.length; i++) { |
|
var list = data.scopes[i]; |
|
|
|
if (!list || !Array.isArray(list)) { |
|
throw new Error('Wrong usage format'); |
|
} |
|
|
|
for (var j = 0; j < list.length; j++) { |
|
var name = list[j]; |
|
|
|
if (hasOwnProperty.call(scopes, name)) { |
|
throw new Error('Class can\'t be used for several scopes: ' + name); |
|
} |
|
|
|
scopes[name] = i + 1; |
|
} |
|
} |
|
} |
|
|
|
return { |
|
whitelist: buildList(data), |
|
blacklist: buildList(data.blacklist), |
|
scopes: scopes |
|
}; |
|
} |
|
|
|
var usage = { |
|
buildIndex: buildIndex |
|
}; |
|
|
|
var utils = { |
|
hasNoChildren: function(node) { |
|
return !node || !node.children || node.children.isEmpty(); |
|
}, |
|
isNodeChildrenList: function(node, list) { |
|
return node !== null && node.children === list; |
|
} |
|
}; |
|
|
|
var resolveKeyword = csstree_min.keyword; |
|
var { hasNoChildren } = utils; |
|
|
|
var Atrule = function cleanAtrule(node, item, list) { |
|
if (node.block) { |
|
// otherwise removed at-rule don't prevent @import for removal |
|
if (this.stylesheet !== null) { |
|
this.stylesheet.firstAtrulesAllowed = false; |
|
} |
|
|
|
if (hasNoChildren(node.block)) { |
|
list.remove(item); |
|
return; |
|
} |
|
} |
|
|
|
switch (node.name) { |
|
case 'charset': |
|
if (hasNoChildren(node.prelude)) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
// if there is any rule before @charset -> remove it |
|
if (item.prev) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
break; |
|
|
|
case 'import': |
|
if (this.stylesheet === null || !this.stylesheet.firstAtrulesAllowed) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
// if there are some rules that not an @import or @charset before @import |
|
// remove it |
|
list.prevUntil(item.prev, function(rule) { |
|
if (rule.type === 'Atrule') { |
|
if (rule.name === 'import' || rule.name === 'charset') { |
|
return; |
|
} |
|
} |
|
|
|
this.root.firstAtrulesAllowed = false; |
|
list.remove(item); |
|
return true; |
|
}, this); |
|
|
|
break; |
|
|
|
default: |
|
var name = resolveKeyword(node.name).basename; |
|
if (name === 'keyframes' || |
|
name === 'media' || |
|
name === 'supports') { |
|
|
|
// drop at-rule with no prelude |
|
if (hasNoChildren(node.prelude) || hasNoChildren(node.block)) { |
|
list.remove(item); |
|
} |
|
} |
|
} |
|
}; |
|
|
|
var Comment = function cleanComment(data, item, list) { |
|
list.remove(item); |
|
}; |
|
|
|
var property = csstree_min.property; |
|
|
|
var Declaration = function cleanDeclartion(node, item, list) { |
|
if (node.value.children && node.value.children.isEmpty()) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
if (property(node.property).custom) { |
|
if (/\S/.test(node.value.value)) { |
|
node.value.value = node.value.value.trim(); |
|
} |
|
} |
|
}; |
|
|
|
var { isNodeChildrenList } = utils; |
|
|
|
var Raw = function cleanRaw(node, item, list) { |
|
// raw in stylesheet or block children |
|
if (isNodeChildrenList(this.stylesheet, list) || |
|
isNodeChildrenList(this.block, list)) { |
|
list.remove(item); |
|
} |
|
}; |
|
|
|
var hasOwnProperty$1 = Object.prototype.hasOwnProperty; |
|
var walk = csstree_min.walk; |
|
var { hasNoChildren: hasNoChildren$1 } = utils; |
|
|
|
function cleanUnused(selectorList, usageData) { |
|
selectorList.children.each(function(selector, item, list) { |
|
var shouldRemove = false; |
|
|
|
walk(selector, function(node) { |
|
// ignore nodes in nested selectors |
|
if (this.selector === null || this.selector === selectorList) { |
|
switch (node.type) { |
|
case 'SelectorList': |
|
// TODO: remove toLowerCase when pseudo selectors will be normalized |
|
// ignore selectors inside :not() |
|
if (this.function === null || this.function.name.toLowerCase() !== 'not') { |
|
if (cleanUnused(node, usageData)) { |
|
shouldRemove = true; |
|
} |
|
} |
|
break; |
|
|
|
case 'ClassSelector': |
|
if (usageData.whitelist !== null && |
|
usageData.whitelist.classes !== null && |
|
!hasOwnProperty$1.call(usageData.whitelist.classes, node.name)) { |
|
shouldRemove = true; |
|
} |
|
if (usageData.blacklist !== null && |
|
usageData.blacklist.classes !== null && |
|
hasOwnProperty$1.call(usageData.blacklist.classes, node.name)) { |
|
shouldRemove = true; |
|
} |
|
break; |
|
|
|
case 'IdSelector': |
|
if (usageData.whitelist !== null && |
|
usageData.whitelist.ids !== null && |
|
!hasOwnProperty$1.call(usageData.whitelist.ids, node.name)) { |
|
shouldRemove = true; |
|
} |
|
if (usageData.blacklist !== null && |
|
usageData.blacklist.ids !== null && |
|
hasOwnProperty$1.call(usageData.blacklist.ids, node.name)) { |
|
shouldRemove = true; |
|
} |
|
break; |
|
|
|
case 'TypeSelector': |
|
// TODO: remove toLowerCase when type selectors will be normalized |
|
// ignore universal selectors |
|
if (node.name.charAt(node.name.length - 1) !== '*') { |
|
if (usageData.whitelist !== null && |
|
usageData.whitelist.tags !== null && |
|
!hasOwnProperty$1.call(usageData.whitelist.tags, node.name.toLowerCase())) { |
|
shouldRemove = true; |
|
} |
|
if (usageData.blacklist !== null && |
|
usageData.blacklist.tags !== null && |
|
hasOwnProperty$1.call(usageData.blacklist.tags, node.name.toLowerCase())) { |
|
shouldRemove = true; |
|
} |
|
} |
|
break; |
|
} |
|
} |
|
}); |
|
|
|
if (shouldRemove) { |
|
list.remove(item); |
|
} |
|
}); |
|
|
|
return selectorList.children.isEmpty(); |
|
} |
|
|
|
var Rule = function cleanRule(node, item, list, options) { |
|
if (hasNoChildren$1(node.prelude) || hasNoChildren$1(node.block)) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
var usageData = options.usage; |
|
|
|
if (usageData && (usageData.whitelist !== null || usageData.blacklist !== null)) { |
|
cleanUnused(node.prelude, usageData); |
|
|
|
if (hasNoChildren$1(node.prelude)) { |
|
list.remove(item); |
|
return; |
|
} |
|
} |
|
}; |
|
|
|
// remove useless universal selector |
|
var TypeSelector = function cleanTypeSelector(node, item, list) { |
|
var name = item.data.name; |
|
|
|
// check it's a non-namespaced universal selector |
|
if (name !== '*') { |
|
return; |
|
} |
|
|
|
// remove when universal selector before other selectors |
|
var nextType = item.next && item.next.data.type; |
|
if (nextType === 'IdSelector' || |
|
nextType === 'ClassSelector' || |
|
nextType === 'AttributeSelector' || |
|
nextType === 'PseudoClassSelector' || |
|
nextType === 'PseudoElementSelector') { |
|
list.remove(item); |
|
} |
|
}; |
|
|
|
var { isNodeChildrenList: isNodeChildrenList$1 } = utils; |
|
|
|
function isSafeOperator(node) { |
|
return node.type === 'Operator' && node.value !== '+' && node.value !== '-'; |
|
} |
|
|
|
var WhiteSpace = function cleanWhitespace(node, item, list) { |
|
// remove when first or last item in sequence |
|
if (item.next === null || item.prev === null) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
// white space in stylesheet or block children |
|
if (isNodeChildrenList$1(this.stylesheet, list) || |
|
isNodeChildrenList$1(this.block, list)) { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
if (item.next.data.type === 'WhiteSpace') { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
if (isSafeOperator(item.prev.data) || isSafeOperator(item.next.data)) { |
|
list.remove(item); |
|
return; |
|
} |
|
}; |
|
|
|
var walk$1 = csstree_min.walk; |
|
var handlers = { |
|
Atrule: Atrule, |
|
Comment: Comment, |
|
Declaration: Declaration, |
|
Raw: Raw, |
|
Rule: Rule, |
|
TypeSelector: TypeSelector, |
|
WhiteSpace: WhiteSpace |
|
}; |
|
|
|
var clean = function(ast, options) { |
|
walk$1(ast, { |
|
leave: function(node, item, list) { |
|
if (handlers.hasOwnProperty(node.type)) { |
|
handlers[node.type].call(this, node, item, list, options); |
|
} |
|
} |
|
}); |
|
}; |
|
|
|
var keyframes = function(node) { |
|
node.block.children.each(function(rule) { |
|
rule.prelude.children.each(function(simpleselector) { |
|
simpleselector.children.each(function(data, item) { |
|
if (data.type === 'Percentage' && data.value === '100') { |
|
item.data = { |
|
type: 'TypeSelector', |
|
loc: data.loc, |
|
name: 'to' |
|
}; |
|
} else if (data.type === 'TypeSelector' && data.name === 'from') { |
|
item.data = { |
|
type: 'Percentage', |
|
loc: data.loc, |
|
value: '0' |
|
}; |
|
} |
|
}); |
|
}); |
|
}); |
|
}; |
|
|
|
var resolveKeyword$1 = csstree_min.keyword; |
|
|
|
|
|
var Atrule$1 = function(node) { |
|
// compress @keyframe selectors |
|
if (resolveKeyword$1(node.name).basename === 'keyframes') { |
|
keyframes(node); |
|
} |
|
}; |
|
|
|
// Can unquote attribute detection |
|
// Adopted implementation of Mathias Bynens |
|
// https://github.com/mathiasbynens/mothereff.in/blob/master/unquoted-attributes/eff.js |
|
var escapesRx = /\\([0-9A-Fa-f]{1,6})(\r\n|[ \t\n\f\r])?|\\./g; |
|
var blockUnquoteRx = /^(-?\d|--)|[\u0000-\u002c\u002e\u002f\u003A-\u0040\u005B-\u005E\u0060\u007B-\u009f]/; |
|
|
|
function canUnquote(value) { |
|
if (value === '' || value === '-') { |
|
return; |
|
} |
|
|
|
// Escapes are valid, so replace them with a valid non-empty string |
|
value = value.replace(escapesRx, 'a'); |
|
|
|
return !blockUnquoteRx.test(value); |
|
} |
|
|
|
var AttributeSelector = function(node) { |
|
var attrValue = node.value; |
|
|
|
if (!attrValue || attrValue.type !== 'String') { |
|
return; |
|
} |
|
|
|
var unquotedValue = attrValue.value.replace(/^(.)(.*)\1$/, '$2'); |
|
if (canUnquote(unquotedValue)) { |
|
node.value = { |
|
type: 'Identifier', |
|
loc: attrValue.loc, |
|
name: unquotedValue |
|
}; |
|
} |
|
}; |
|
|
|
var font = function compressFont(node) { |
|
var list = node.children; |
|
|
|
list.eachRight(function(node, item) { |
|
if (node.type === 'Identifier') { |
|
if (node.name === 'bold') { |
|
item.data = { |
|
type: 'Number', |
|
loc: node.loc, |
|
value: '700' |
|
}; |
|
} else if (node.name === 'normal') { |
|
var prev = item.prev; |
|
|
|
if (prev && prev.data.type === 'Operator' && prev.data.value === '/') { |
|
this.remove(prev); |
|
} |
|
|
|
this.remove(item); |
|
} else if (node.name === 'medium') { |
|
var next = item.next; |
|
|
|
if (!next || next.data.type !== 'Operator') { |
|
this.remove(item); |
|
} |
|
} |
|
} |
|
}); |
|
|
|
// remove redundant spaces |
|
list.each(function(node, item) { |
|
if (node.type === 'WhiteSpace') { |
|
if (!item.prev || !item.next || item.next.data.type === 'WhiteSpace') { |
|
this.remove(item); |
|
} |
|
} |
|
}); |
|
|
|
if (list.isEmpty()) { |
|
list.insert(list.createItem({ |
|
type: 'Identifier', |
|
name: 'normal' |
|
})); |
|
} |
|
}; |
|
|
|
var fontWeight = function compressFontWeight(node) { |
|
var value = node.children.head.data; |
|
|
|
if (value.type === 'Identifier') { |
|
switch (value.name) { |
|
case 'normal': |
|
node.children.head.data = { |
|
type: 'Number', |
|
loc: value.loc, |
|
value: '400' |
|
}; |
|
break; |
|
case 'bold': |
|
node.children.head.data = { |
|
type: 'Number', |
|
loc: value.loc, |
|
value: '700' |
|
}; |
|
break; |
|
} |
|
} |
|
}; |
|
|
|
var List = csstree_min.List; |
|
|
|
var background = function compressBackground(node) { |
|
function lastType() { |
|
if (buffer.length) { |
|
return buffer[buffer.length - 1].type; |
|
} |
|
} |
|
|
|
function flush() { |
|
if (lastType() === 'WhiteSpace') { |
|
buffer.pop(); |
|
} |
|
|
|
if (!buffer.length) { |
|
buffer.unshift( |
|
{ |
|
type: 'Number', |
|
loc: null, |
|
value: '0' |
|
}, |
|
{ |
|
type: 'WhiteSpace', |
|
value: ' ' |
|
}, |
|
{ |
|
type: 'Number', |
|
loc: null, |
|
value: '0' |
|
} |
|
); |
|
} |
|
|
|
newValue.push.apply(newValue, buffer); |
|
|
|
buffer = []; |
|
} |
|
|
|
var newValue = []; |
|
var buffer = []; |
|
|
|
node.children.each(function(node) { |
|
if (node.type === 'Operator' && node.value === ',') { |
|
flush(); |
|
newValue.push(node); |
|
return; |
|
} |
|
|
|
// remove defaults |
|
if (node.type === 'Identifier') { |
|
if (node.name === 'transparent' || |
|
node.name === 'none' || |
|
node.name === 'repeat' || |
|
node.name === 'scroll') { |
|
return; |
|
} |
|
} |
|
|
|
// don't add redundant spaces |
|
if (node.type === 'WhiteSpace' && (!buffer.length || lastType() === 'WhiteSpace')) { |
|
return; |
|
} |
|
|
|
buffer.push(node); |
|
}); |
|
|
|
flush(); |
|
node.children = new List().fromArray(newValue); |
|
}; |
|
|
|
function removeItemAndRedundantWhiteSpace(list, item) { |
|
var prev = item.prev; |
|
var next = item.next; |
|
|
|
if (next !== null) { |
|
if (next.data.type === 'WhiteSpace' && (prev === null || prev.data.type === 'WhiteSpace')) { |
|
list.remove(next); |
|
} |
|
} else if (prev !== null && prev.data.type === 'WhiteSpace') { |
|
list.remove(prev); |
|
} |
|
|
|
list.remove(item); |
|
} |
|
|
|
var border = function compressBorder(node) { |
|
node.children.each(function(node, item, list) { |
|
if (node.type === 'Identifier' && node.name.toLowerCase() === 'none') { |
|
if (list.head === list.tail) { |
|
// replace `none` for zero when `none` is a single term |
|
item.data = { |
|
type: 'Number', |
|
loc: node.loc, |
|
value: '0' |
|
}; |
|
} else { |
|
removeItemAndRedundantWhiteSpace(list, item); |
|
} |
|
} |
|
}); |
|
}; |
|
|
|
var resolveName = csstree_min.property; |
|
var handlers$1 = { |
|
'font': font, |
|
'font-weight': fontWeight, |
|
'background': background, |
|
'border': border, |
|
'outline': border |
|
}; |
|
|
|
var Value = function compressValue(node) { |
|
if (!this.declaration) { |
|
return; |
|
} |
|
|
|
var property = resolveName(this.declaration.property); |
|
|
|
if (handlers$1.hasOwnProperty(property.basename)) { |
|
handlers$1[property.basename](node); |
|
} |
|
}; |
|
|
|
var OMIT_PLUSSIGN = /^(?:\+|(-))?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/; |
|
var KEEP_PLUSSIGN = /^([\+\-])?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/; |
|
var unsafeToRemovePlusSignAfter = { |
|
Dimension: true, |
|
Hash: true, |
|
Identifier: true, |
|
Number: true, |
|
Raw: true, |
|
UnicodeRange: true |
|
}; |
|
|
|
function packNumber(value, item) { |
|
// omit plus sign only if no prev or prev is safe type |
|
var regexp = item && item.prev !== null && unsafeToRemovePlusSignAfter.hasOwnProperty(item.prev.data.type) |
|
? KEEP_PLUSSIGN |
|
: OMIT_PLUSSIGN; |
|
|
|
// 100 -> '100' |
|
// 00100 -> '100' |
|
// +100 -> '100' (only when safe, e.g. omitting plus sign for 1px+1px leads to single dimension instead of two) |
|
// -100 -> '-100' |
|
// 0.123 -> '.123' |
|
// 0.12300 -> '.123' |
|
// 0.0 -> '' |
|
// 0 -> '' |
|
// -0 -> '-' |
|
value = String(value).replace(regexp, '$1$2$3'); |
|
|
|
if (value === '' || value === '-') { |
|
value = '0'; |
|
} |
|
|
|
return value; |
|
} |
|
|
|
var _Number = function(node, item) { |
|
node.value = packNumber(node.value, item); |
|
}; |
|
var pack = packNumber; |
|
_Number.pack = pack; |
|
|
|
var packNumber$1 = _Number.pack; |
|
var MATH_FUNCTIONS = { |
|
'calc': true, |
|
'min': true, |
|
'max': true, |
|
'clamp': true |
|
}; |
|
var LENGTH_UNIT = { |
|
// absolute length units |
|
'px': true, |
|
'mm': true, |
|
'cm': true, |
|
'in': true, |
|
'pt': true, |
|
'pc': true, |
|
|
|
// relative length units |
|
'em': true, |
|
'ex': true, |
|
'ch': true, |
|
'rem': true, |
|
|
|
// viewport-percentage lengths |
|
'vh': true, |
|
'vw': true, |
|
'vmin': true, |
|
'vmax': true, |
|
'vm': true |
|
}; |
|
|
|
var Dimension = function compressDimension(node, item) { |
|
var value = packNumber$1(node.value, item); |
|
|
|
node.value = value; |
|
|
|
if (value === '0' && this.declaration !== null && this.atrulePrelude === null) { |
|
var unit = node.unit.toLowerCase(); |
|
|
|
// only length values can be compressed |
|
if (!LENGTH_UNIT.hasOwnProperty(unit)) { |
|
return; |
|
} |
|
|
|
// issue #362: shouldn't remove unit in -ms-flex since it breaks flex in IE10/11 |
|
// issue #200: shouldn't remove unit in flex since it breaks flex in IE10/11 |
|
if (this.declaration.property === '-ms-flex' || |
|
this.declaration.property === 'flex') { |
|
return; |
|
} |
|
|
|
// issue #222: don't remove units inside calc |
|
if (this.function && MATH_FUNCTIONS.hasOwnProperty(this.function.name)) { |
|
return; |
|
} |
|
|
|
item.data = { |
|
type: 'Number', |
|
loc: node.loc, |
|
value: value |
|
}; |
|
} |
|
}; |
|
|
|
var lexer = csstree_min.lexer; |
|
var packNumber$2 = _Number.pack; |
|
var blacklist = new Set([ |
|
// see https://github.com/jakubpawlowicz/clean-css/issues/957 |
|
'width', |
|
'min-width', |
|
'max-width', |
|
'height', |
|
'min-height', |
|
'max-height', |
|
|
|
// issue #410: Don’t remove units in flex-basis value for (-ms-)flex shorthand |
|
// issue #362: shouldn't remove unit in -ms-flex since it breaks flex in IE10/11 |
|
// issue #200: shouldn't remove unit in flex since it breaks flex in IE10/11 |
|
'flex', |
|
'-ms-flex' |
|
]); |
|
|
|
var Percentage = function compressPercentage(node, item) { |
|
node.value = packNumber$2(node.value, item); |
|
|
|
if (node.value === '0' && this.declaration && !blacklist.has(this.declaration.property)) { |
|
// try to convert a number |
|
item.data = { |
|
type: 'Number', |
|
loc: node.loc, |
|
value: node.value |
|
}; |
|
|
|
// that's ok only when new value matches on length |
|
if (!lexer.matchDeclaration(this.declaration).isType(item.data, 'length')) { |
|
// otherwise rollback changes |
|
item.data = node; |
|
} |
|
} |
|
}; |
|
|
|
var _String = function(node) { |
|
var value = node.value; |
|
|
|
// remove escaped newlines, i.e. |
|
// .a { content: "foo\ |
|
// bar"} |
|
// -> |
|
// .a { content: "foobar" } |
|
value = value.replace(/\\(\r\n|\r|\n|\f)/g, ''); |
|
|
|
node.value = value; |
|
}; |
|
|
|
var UNICODE = '\\\\[0-9a-f]{1,6}(\\r\\n|[ \\n\\r\\t\\f])?'; |
|
var ESCAPE = '(' + UNICODE + '|\\\\[^\\n\\r\\f0-9a-fA-F])'; |
|
var NONPRINTABLE = '\u0000\u0008\u000b\u000e-\u001f\u007f'; |
|
var SAFE_URL = new RegExp('^(' + ESCAPE + '|[^\"\'\\(\\)\\\\\\s' + NONPRINTABLE + '])*$', 'i'); |
|
|
|
var Url = function(node) { |
|
var value = node.value; |
|
|
|
if (value.type !== 'String') { |
|
return; |
|
} |
|
|
|
var quote = value.value[0]; |
|
var url = value.value.substr(1, value.value.length - 2); |
|
|
|
// convert `\\` to `/` |
|
url = url.replace(/\\\\/g, '/'); |
|
|
|
// remove quotes when safe |
|
// https://www.w3.org/TR/css-syntax-3/#url-unquoted-diagram |
|
if (SAFE_URL.test(url)) { |
|
node.value = { |
|
type: 'Raw', |
|
loc: node.value.loc, |
|
value: url |
|
}; |
|
} else { |
|
// use double quotes if string has no double quotes |
|
// otherwise use original quotes |
|
// TODO: make better quote type selection |
|
node.value.value = url.indexOf('"') === -1 ? '"' + url + '"' : quote + url + quote; |
|
} |
|
}; |
|
|
|
var lexer$1 = csstree_min.lexer; |
|
var packNumber$3 = _Number.pack; |
|
|
|
// http://www.w3.org/TR/css3-color/#svg-color |
|
var NAME_TO_HEX = { |
|
'aliceblue': 'f0f8ff', |
|
'antiquewhite': 'faebd7', |
|
'aqua': '0ff', |
|
'aquamarine': '7fffd4', |
|
'azure': 'f0ffff', |
|
'beige': 'f5f5dc', |
|
'bisque': 'ffe4c4', |
|
'black': '000', |
|
'blanchedalmond': 'ffebcd', |
|
'blue': '00f', |
|
'blueviolet': '8a2be2', |
|
'brown': 'a52a2a', |
|
'burlywood': 'deb887', |
|
'cadetblue': '5f9ea0', |
|
'chartreuse': '7fff00', |
|
'chocolate': 'd2691e', |
|
'coral': 'ff7f50', |
|
'cornflowerblue': '6495ed', |
|
'cornsilk': 'fff8dc', |
|
'crimson': 'dc143c', |
|
'cyan': '0ff', |
|
'darkblue': '00008b', |
|
'darkcyan': '008b8b', |
|
'darkgoldenrod': 'b8860b', |
|
'darkgray': 'a9a9a9', |
|
'darkgrey': 'a9a9a9', |
|
'darkgreen': '006400', |
|
'darkkhaki': 'bdb76b', |
|
'darkmagenta': '8b008b', |
|
'darkolivegreen': '556b2f', |
|
'darkorange': 'ff8c00', |
|
'darkorchid': '9932cc', |
|
'darkred': '8b0000', |
|
'darksalmon': 'e9967a', |
|
'darkseagreen': '8fbc8f', |
|
'darkslateblue': '483d8b', |
|
'darkslategray': '2f4f4f', |
|
'darkslategrey': '2f4f4f', |
|
'darkturquoise': '00ced1', |
|
'darkviolet': '9400d3', |
|
'deeppink': 'ff1493', |
|
'deepskyblue': '00bfff', |
|
'dimgray': '696969', |
|
'dimgrey': '696969', |
|
'dodgerblue': '1e90ff', |
|
'firebrick': 'b22222', |
|
'floralwhite': 'fffaf0', |
|
'forestgreen': '228b22', |
|
'fuchsia': 'f0f', |
|
'gainsboro': 'dcdcdc', |
|
'ghostwhite': 'f8f8ff', |
|
'gold': 'ffd700', |
|
'goldenrod': 'daa520', |
|
'gray': '808080', |
|
'grey': '808080', |
|
'green': '008000', |
|
'greenyellow': 'adff2f', |
|
'honeydew': 'f0fff0', |
|
'hotpink': 'ff69b4', |
|
'indianred': 'cd5c5c', |
|
'indigo': '4b0082', |
|
'ivory': 'fffff0', |
|
'khaki': 'f0e68c', |
|
'lavender': 'e6e6fa', |
|
'lavenderblush': 'fff0f5', |
|
'lawngreen': '7cfc00', |
|
'lemonchiffon': 'fffacd', |
|
'lightblue': 'add8e6', |
|
'lightcoral': 'f08080', |
|
'lightcyan': 'e0ffff', |
|
'lightgoldenrodyellow': 'fafad2', |
|
'lightgray': 'd3d3d3', |
|
'lightgrey': 'd3d3d3', |
|
'lightgreen': '90ee90', |
|
'lightpink': 'ffb6c1', |
|
'lightsalmon': 'ffa07a', |
|
'lightseagreen': '20b2aa', |
|
'lightskyblue': '87cefa', |
|
'lightslategray': '789', |
|
'lightslategrey': '789', |
|
'lightsteelblue': 'b0c4de', |
|
'lightyellow': 'ffffe0', |
|
'lime': '0f0', |
|
'limegreen': '32cd32', |
|
'linen': 'faf0e6', |
|
'magenta': 'f0f', |
|
'maroon': '800000', |
|
'mediumaquamarine': '66cdaa', |
|
'mediumblue': '0000cd', |
|
'mediumorchid': 'ba55d3', |
|
'mediumpurple': '9370db', |
|
'mediumseagreen': '3cb371', |
|
'mediumslateblue': '7b68ee', |
|
'mediumspringgreen': '00fa9a', |
|
'mediumturquoise': '48d1cc', |
|
'mediumvioletred': 'c71585', |
|
'midnightblue': '191970', |
|
'mintcream': 'f5fffa', |
|
'mistyrose': 'ffe4e1', |
|
'moccasin': 'ffe4b5', |
|
'navajowhite': 'ffdead', |
|
'navy': '000080', |
|
'oldlace': 'fdf5e6', |
|
'olive': '808000', |
|
'olivedrab': '6b8e23', |
|
'orange': 'ffa500', |
|
'orangered': 'ff4500', |
|
'orchid': 'da70d6', |
|
'palegoldenrod': 'eee8aa', |
|
'palegreen': '98fb98', |
|
'paleturquoise': 'afeeee', |
|
'palevioletred': 'db7093', |
|
'papayawhip': 'ffefd5', |
|
'peachpuff': 'ffdab9', |
|
'peru': 'cd853f', |
|
'pink': 'ffc0cb', |
|
'plum': 'dda0dd', |
|
'powderblue': 'b0e0e6', |
|
'purple': '800080', |
|
'rebeccapurple': '639', |
|
'red': 'f00', |
|
'rosybrown': 'bc8f8f', |
|
'royalblue': '4169e1', |
|
'saddlebrown': '8b4513', |
|
'salmon': 'fa8072', |
|
'sandybrown': 'f4a460', |
|
'seagreen': '2e8b57', |
|
'seashell': 'fff5ee', |
|
'sienna': 'a0522d', |
|
'silver': 'c0c0c0', |
|
'skyblue': '87ceeb', |
|
'slateblue': '6a5acd', |
|
'slategray': '708090', |
|
'slategrey': '708090', |
|
'snow': 'fffafa', |
|
'springgreen': '00ff7f', |
|
'steelblue': '4682b4', |
|
'tan': 'd2b48c', |
|
'teal': '008080', |
|
'thistle': 'd8bfd8', |
|
'tomato': 'ff6347', |
|
'turquoise': '40e0d0', |
|
'violet': 'ee82ee', |
|
'wheat': 'f5deb3', |
|
'white': 'fff', |
|
'whitesmoke': 'f5f5f5', |
|
'yellow': 'ff0', |
|
'yellowgreen': '9acd32' |
|
}; |
|
|
|
var HEX_TO_NAME = { |
|
'800000': 'maroon', |
|
'800080': 'purple', |
|
'808000': 'olive', |
|
'808080': 'gray', |
|
'00ffff': 'cyan', |
|
'f0ffff': 'azure', |
|
'f5f5dc': 'beige', |
|
'ffe4c4': 'bisque', |
|
'000000': 'black', |
|
'0000ff': 'blue', |
|
'a52a2a': 'brown', |
|
'ff7f50': 'coral', |
|
'ffd700': 'gold', |
|
'008000': 'green', |
|
'4b0082': 'indigo', |
|
'fffff0': 'ivory', |
|
'f0e68c': 'khaki', |
|
'00ff00': 'lime', |
|
'faf0e6': 'linen', |
|
'000080': 'navy', |
|
'ffa500': 'orange', |
|
'da70d6': 'orchid', |
|
'cd853f': 'peru', |
|
'ffc0cb': 'pink', |
|
'dda0dd': 'plum', |
|
'f00': 'red', |
|
'ff0000': 'red', |
|
'fa8072': 'salmon', |
|
'a0522d': 'sienna', |
|
'c0c0c0': 'silver', |
|
'fffafa': 'snow', |
|
'd2b48c': 'tan', |
|
'008080': 'teal', |
|
'ff6347': 'tomato', |
|
'ee82ee': 'violet', |
|
'f5deb3': 'wheat', |
|
'ffffff': 'white', |
|
'ffff00': 'yellow' |
|
}; |
|
|
|
function hueToRgb(p, q, t) { |
|
if (t < 0) { |
|
t += 1; |
|
} |
|
if (t > 1) { |
|
t -= 1; |
|
} |
|
if (t < 1 / 6) { |
|
return p + (q - p) * 6 * t; |
|
} |
|
if (t < 1 / 2) { |
|
return q; |
|
} |
|
if (t < 2 / 3) { |
|
return p + (q - p) * (2 / 3 - t) * 6; |
|
} |
|
return p; |
|
} |
|
|
|
function hslToRgb(h, s, l, a) { |
|
var r; |
|
var g; |
|
var b; |
|
|
|
if (s === 0) { |
|
r = g = b = l; // achromatic |
|
} else { |
|
var q = l < 0.5 ? l * (1 + s) : l + s - l * s; |
|
var p = 2 * l - q; |
|
|
|
r = hueToRgb(p, q, h + 1 / 3); |
|
g = hueToRgb(p, q, h); |
|
b = hueToRgb(p, q, h - 1 / 3); |
|
} |
|
|
|
return [ |
|
Math.round(r * 255), |
|
Math.round(g * 255), |
|
Math.round(b * 255), |
|
a |
|
]; |
|
} |
|
|
|
function toHex(value) { |
|
value = value.toString(16); |
|
return value.length === 1 ? '0' + value : value; |
|
} |
|
|
|
function parseFunctionArgs(functionArgs, count, rgb) { |
|
var cursor = functionArgs.head; |
|
var args = []; |
|
var wasValue = false; |
|
|
|
while (cursor !== null) { |
|
var node = cursor.data; |
|
var type = node.type; |
|
|
|
switch (type) { |
|
case 'Number': |
|
case 'Percentage': |
|
if (wasValue) { |
|
return; |
|
} |
|
|
|
wasValue = true; |
|
args.push({ |
|
type: type, |
|
value: Number(node.value) |
|
}); |
|
break; |
|
|
|
case 'Operator': |
|
if (node.value === ',') { |
|
if (!wasValue) { |
|
return; |
|
} |
|
wasValue = false; |
|
} else if (wasValue || node.value !== '+') { |
|
return; |
|
} |
|
break; |
|
|
|
default: |
|
// something we couldn't understand |
|
return; |
|
} |
|
|
|
cursor = cursor.next; |
|
} |
|
|
|
if (args.length !== count) { |
|
// invalid arguments count |
|
// TODO: remove those tokens |
|
return; |
|
} |
|
|
|
if (args.length === 4) { |
|
if (args[3].type !== 'Number') { |
|
// 4th argument should be a number |
|
// TODO: remove those tokens |
|
return; |
|
} |
|
|
|
args[3].type = 'Alpha'; |
|
} |
|
|
|
if (rgb) { |
|
if (args[0].type !== args[1].type || args[0].type !== args[2].type) { |
|
// invalid color, numbers and percentage shouldn't be mixed |
|
// TODO: remove those tokens |
|
return; |
|
} |
|
} else { |
|
if (args[0].type !== 'Number' || |
|
args[1].type !== 'Percentage' || |
|
args[2].type !== 'Percentage') { |
|
// invalid color, for hsl values should be: number, percentage, percentage |
|
// TODO: remove those tokens |
|
return; |
|
} |
|
|
|
args[0].type = 'Angle'; |
|
} |
|
|
|
return args.map(function(arg) { |
|
var value = Math.max(0, arg.value); |
|
|
|
switch (arg.type) { |
|
case 'Number': |
|
// fit value to [0..255] range |
|
value = Math.min(value, 255); |
|
break; |
|
|
|
case 'Percentage': |
|
// convert 0..100% to value in [0..255] range |
|
value = Math.min(value, 100) / 100; |
|
|
|
if (!rgb) { |
|
return value; |
|
} |
|
|
|
value = 255 * value; |
|
break; |
|
|
|
case 'Angle': |
|
// fit value to (-360..360) range |
|
return (((value % 360) + 360) % 360) / 360; |
|
|
|
case 'Alpha': |
|
// fit value to [0..1] range |
|
return Math.min(value, 1); |
|
} |
|
|
|
return Math.round(value); |
|
}); |
|
} |
|
|
|
function compressFunction(node, item, list) { |
|
var functionName = node.name; |
|
var args; |
|
|
|
if (functionName === 'rgba' || functionName === 'hsla') { |
|
args = parseFunctionArgs(node.children, 4, functionName === 'rgba'); |
|
|
|
if (!args) { |
|
// something went wrong |
|
return; |
|
} |
|
|
|
if (functionName === 'hsla') { |
|
args = hslToRgb.apply(null, args); |
|
node.name = 'rgba'; |
|
} |
|
|
|
if (args[3] === 0) { |
|
// try to replace `rgba(x, x, x, 0)` to `transparent` |
|
// always replace `rgba(0, 0, 0, 0)` to `transparent` |
|
// otherwise avoid replacement in gradients since it may break color transition |
|
// http://stackoverflow.com/questions/11829410/css3-gradient-rendering-issues-from-transparent-to-white |
|
var scopeFunctionName = this.function && this.function.name; |
|
if ((args[0] === 0 && args[1] === 0 && args[2] === 0) || |
|
!/^(?:to|from|color-stop)$|gradient$/i.test(scopeFunctionName)) { |
|
|
|
item.data = { |
|
type: 'Identifier', |
|
loc: node.loc, |
|
name: 'transparent' |
|
}; |
|
|
|
return; |
|
} |
|
} |
|
|
|
if (args[3] !== 1) { |
|
// replace argument values for normalized/interpolated |
|
node.children.each(function(node, item, list) { |
|
if (node.type === 'Operator') { |
|
if (node.value !== ',') { |
|
list.remove(item); |
|
} |
|
return; |
|
} |
|
|
|
item.data = { |
|
type: 'Number', |
|
loc: node.loc, |
|
value: packNumber$3(args.shift(), null) |
|
}; |
|
}); |
|
|
|
return; |
|
} |
|
|
|
// otherwise convert to rgb, i.e. rgba(255, 0, 0, 1) -> rgb(255, 0, 0) |
|
functionName = 'rgb'; |
|
} |
|
|
|
if (functionName === 'hsl') { |
|
args = args || parseFunctionArgs(node.children, 3, false); |
|
|
|
if (!args) { |
|
// something went wrong |
|
return; |
|
} |
|
|
|
// convert to rgb |
|
args = hslToRgb.apply(null, args); |
|
functionName = 'rgb'; |
|
} |
|
|
|
if (functionName === 'rgb') { |
|
args = args || parseFunctionArgs(node.children, 3, true); |
|
|
|
if (!args) { |
|
// something went wrong |
|
return; |
|
} |
|
|
|
// check if color is not at the end and not followed by space |
|
var next = item.next; |
|
if (next && next.data.type !== 'WhiteSpace') { |
|
list.insert(list.createItem({ |
|
type: 'WhiteSpace', |
|
value: ' ' |
|
}), next); |
|
} |
|
|
|
item.data = { |
|
type: 'Hash', |
|
loc: node.loc, |
|
value: toHex(args[0]) + toHex(args[1]) + toHex(args[2]) |
|
}; |
|
|
|
compressHex(item.data, item); |
|
} |
|
} |
|
|
|
function compressIdent(node, item) { |
|
if (this.declaration === null) { |
|
return; |
|
} |
|
|
|
var color = node.name.toLowerCase(); |
|
|
|
if (NAME_TO_HEX.hasOwnProperty(color) && |
|
lexer$1.matchDeclaration(this.declaration).isType(node, 'color')) { |
|
var hex = NAME_TO_HEX[color]; |
|
|
|
if (hex.length + 1 <= color.length) { |
|
// replace for shorter hex value |
|
item.data = { |
|
type: 'Hash', |
|
loc: node.loc, |
|
value: hex |
|
}; |
|
} else { |
|
// special case for consistent colors |
|
if (color === 'grey') { |
|
color = 'gray'; |
|
} |
|
|
|
// just replace value for lower cased name |
|
node.name = color; |
|
} |
|
} |
|
} |
|
|
|
function compressHex(node, item) { |
|
var color = node.value.toLowerCase(); |
|
|
|
// #112233 -> #123 |
|
if (color.length === 6 && |
|
color[0] === color[1] && |
|
color[2] === color[3] && |
|
color[4] === color[5]) { |
|
color = color[0] + color[2] + color[4]; |
|
} |
|
|
|
if (HEX_TO_NAME[color]) { |
|
item.data = { |
|
type: 'Identifier', |
|
loc: node.loc, |
|
name: HEX_TO_NAME[color] |
|
}; |
|
} else { |
|
node.value = color; |
|
} |
|
} |
|
|
|
var color = { |
|
compressFunction: compressFunction, |
|
compressIdent: compressIdent, |
|
compressHex: compressHex |
|
}; |
|
|
|
var walk$2 = csstree_min.walk; |
|
var handlers$2 = { |
|
Atrule: Atrule$1, |
|
AttributeSelector: AttributeSelector, |
|
Value: Value, |
|
Dimension: Dimension, |
|
Percentage: Percentage, |
|
Number: _Number, |
|
String: _String, |
|
Url: Url, |
|
Hash: color.compressHex, |
|
Identifier: color.compressIdent, |
|
Function: color.compressFunction |
|
}; |
|
|
|
var replace = function(ast) { |
|
walk$2(ast, { |
|
leave: function(node, item, list) { |
|
if (handlers$2.hasOwnProperty(node.type)) { |
|
handlers$2[node.type].call(this, node, item, list); |
|
} |
|
} |
|
}); |
|
}; |
|
|
|
var generate = csstree_min.generate; |
|
|
|
function Index() { |
|
this.seed = 0; |
|
this.map = Object.create(null); |
|
} |
|
|
|
Index.prototype.resolve = function(str) { |
|
var index = this.map[str]; |
|
|
|
if (!index) { |
|
index = ++this.seed; |
|
this.map[str] = index; |
|
} |
|
|
|
return index; |
|
}; |
|
|
|
var createDeclarationIndexer = function createDeclarationIndexer() { |
|
var ids = new Index(); |
|
|
|
return function markDeclaration(node) { |
|
var id = generate(node); |
|
|
|
node.id = ids.resolve(id); |
|
node.length = id.length; |
|
node.fingerprint = null; |
|
|
|
return node; |
|
}; |
|
}; |
|
|
|
var specificity = function specificity(simpleSelector) { |
|
var A = 0; |
|
var B = 0; |
|
var C = 0; |
|
|
|
simpleSelector.children.each(function walk(node) { |
|
switch (node.type) { |
|
case 'SelectorList': |
|
case 'Selector': |
|
node.children.each(walk); |
|
break; |
|
|
|
case 'IdSelector': |
|
A++; |
|
break; |
|
|
|
case 'ClassSelector': |
|
case 'AttributeSelector': |
|
B++; |
|
break; |
|
|
|
case 'PseudoClassSelector': |
|
switch (node.name.toLowerCase()) { |
|
case 'not': |
|
node.children.each(walk); |
|
break; |
|
|
|
case 'before': |
|
case 'after': |
|
case 'first-line': |
|
case 'first-letter': |
|
C++; |
|
break; |
|
|
|
// TODO: support for :nth-*(.. of <SelectorList>), :matches(), :has() |
|
default: |
|
B++; |
|
} |
|
break; |
|
|
|
case 'PseudoElementSelector': |
|
C++; |
|
break; |
|
|
|
case 'TypeSelector': |
|
// ignore universal selector |
|
if (node.name.charAt(node.name.length - 1) !== '*') { |
|
C++; |
|
} |
|
break; |
|
|
|
} |
|
}); |
|
|
|
return [A, B, C]; |
|
}; |
|
|
|
var generate$1 = csstree_min.generate; |
|
|
|
|
|
var nonFreezePseudoElements = { |
|
'first-letter': true, |
|
'first-line': true, |
|
'after': true, |
|
'before': true |
|
}; |
|
var nonFreezePseudoClasses = { |
|
'link': true, |
|
'visited': true, |
|
'hover': true, |
|
'active': true, |
|
'first-letter': true, |
|
'first-line': true, |
|
'after': true, |
|
'before': true |
|
}; |
|
|
|
var processSelector = function freeze(node, usageData) { |
|
var pseudos = Object.create(null); |
|
var hasPseudo = false; |
|
|
|
node.prelude.children.each(function(simpleSelector) { |
|
var tagName = '*'; |
|
var scope = 0; |
|
|
|
simpleSelector.children.each(function(node) { |
|
switch (node.type) { |
|
case 'ClassSelector': |
|
if (usageData && usageData.scopes) { |
|
var classScope = usageData.scopes[node.name] || 0; |
|
|
|
if (scope !== 0 && classScope !== scope) { |
|
throw new Error('Selector can\'t has classes from different scopes: ' + generate$1(simpleSelector)); |
|
} |
|
|
|
scope = classScope; |
|
} |
|
break; |
|
|
|
case 'PseudoClassSelector': |
|
var name = node.name.toLowerCase(); |
|
|
|
if (!nonFreezePseudoClasses.hasOwnProperty(name)) { |
|
pseudos[':' + name] = true; |
|
hasPseudo = true; |
|
} |
|
break; |
|
|
|
case 'PseudoElementSelector': |
|
var name = node.name.toLowerCase(); |
|
|
|
if (!nonFreezePseudoElements.hasOwnProperty(name)) { |
|
pseudos['::' + name] = true; |
|
hasPseudo = true; |
|
} |
|
break; |
|
|
|
case 'TypeSelector': |
|
tagName = node.name.toLowerCase(); |
|
break; |
|
|
|
case 'AttributeSelector': |
|
if (node.flags) { |
|
pseudos['[' + node.flags.toLowerCase() + ']'] = true; |
|
hasPseudo = true; |
|
} |
|
break; |
|
|
|
case 'WhiteSpace': |
|
case 'Combinator': |
|
tagName = '*'; |
|
break; |
|
} |
|
}); |
|
|
|
simpleSelector.compareMarker = specificity(simpleSelector).toString(); |
|
simpleSelector.id = null; // pre-init property to avoid multiple hidden class |
|
simpleSelector.id = generate$1(simpleSelector); |
|
|
|
if (scope) { |
|
simpleSelector.compareMarker += ':' + scope; |
|
} |
|
|
|
if (tagName !== '*') { |
|
simpleSelector.compareMarker += ',' + tagName; |
|
} |
|
}); |
|
|
|
// add property to all rule nodes to avoid multiple hidden class |
|
node.pseudoSignature = hasPseudo && Object.keys(pseudos).sort().join(','); |
|
}; |
|
|
|
var resolveKeyword$2 = csstree_min.keyword; |
|
var walk$3 = csstree_min.walk; |
|
var generate$2 = csstree_min.generate; |
|
|
|
|
|
|
|
var prepare = function prepare(ast, options) { |
|
var markDeclaration = createDeclarationIndexer(); |
|
|
|
walk$3(ast, { |
|
visit: 'Rule', |
|
enter: function processRule(node) { |
|
node.block.children.each(markDeclaration); |
|
processSelector(node, options.usage); |
|
} |
|
}); |
|
|
|
walk$3(ast, { |
|
visit: 'Atrule', |
|
enter: function(node) { |
|
if (node.prelude) { |
|
node.prelude.id = null; // pre-init property to avoid multiple hidden class for generate |
|
node.prelude.id = generate$2(node.prelude); |
|
} |
|
|
|
// compare keyframe selectors by its values |
|
// NOTE: still no clarification about problems with keyframes selector grouping (issue #197) |
|
if (resolveKeyword$2(node.name).basename === 'keyframes') { |
|
node.block.avoidRulesMerge = true; /* probably we don't need to prevent those merges for @keyframes |
|
TODO: need to be checked */ |
|
node.block.children.each(function(rule) { |
|
rule.prelude.children.each(function(simpleselector) { |
|
simpleselector.compareMarker = simpleselector.id; |
|
}); |
|
}); |
|
} |
|
} |
|
}); |
|
|
|
return { |
|
declaration: markDeclaration |
|
}; |
|
}; |
|
|
|
var List$1 = csstree_min.List; |
|
var resolveKeyword$3 = csstree_min.keyword; |
|
var hasOwnProperty$2 = Object.prototype.hasOwnProperty; |
|
var walk$4 = csstree_min.walk; |
|
|
|
function addRuleToMap(map, item, list, single) { |
|
var node = item.data; |
|
var name = resolveKeyword$3(node.name).basename; |
|
var id = node.name.toLowerCase() + '/' + (node.prelude ? node.prelude.id : null); |
|
|
|
if (!hasOwnProperty$2.call(map, name)) { |
|
map[name] = Object.create(null); |
|
} |
|
|
|
if (single) { |
|
delete map[name][id]; |
|
} |
|
|
|
if (!hasOwnProperty$2.call(map[name], id)) { |
|
map[name][id] = new List$1(); |
|
} |
|
|
|
map[name][id].append(list.remove(item)); |
|
} |
|
|
|
function relocateAtrules(ast, options) { |
|
var collected = Object.create(null); |
|
var topInjectPoint = null; |
|
|
|
ast.children.each(function(node, item, list) { |
|
if (node.type === 'Atrule') { |
|
var name = resolveKeyword$3(node.name).basename; |
|
|
|
switch (name) { |
|
case 'keyframes': |
|
addRuleToMap(collected, item, list, true); |
|
return; |
|
|
|
case 'media': |
|
if (options.forceMediaMerge) { |
|
addRuleToMap(collected, item, list, false); |
|
return; |
|
} |
|
break; |
|
} |
|
|
|
if (topInjectPoint === null && |
|
name !== 'charset' && |
|
name !== 'import') { |
|
topInjectPoint = item; |
|
} |
|
} else { |
|
if (topInjectPoint === null) { |
|
topInjectPoint = item; |
|
} |
|
} |
|
}); |
|
|
|
for (var atrule in collected) { |
|
for (var id in collected[atrule]) { |
|
ast.children.insertList( |
|
collected[atrule][id], |
|
atrule === 'media' ? null : topInjectPoint |
|
); |
|
} |
|
} |
|
} |
|
function isMediaRule(node) { |
|
return node.type === 'Atrule' && node.name === 'media'; |
|
} |
|
|
|
function processAtrule(node, item, list) { |
|
if (!isMediaRule(node)) { |
|
return; |
|
} |
|
|
|
var prev = item.prev && item.prev.data; |
|
|
|
if (!prev || !isMediaRule(prev)) { |
|
return; |
|
} |
|
|
|
// merge @media with same query |
|
if (node.prelude && |
|
prev.prelude && |
|
node.prelude.id === prev.prelude.id) { |
|
prev.block.children.appendList(node.block.children); |
|
list.remove(item); |
|
|
|
// TODO: use it when we can refer to several points in source |
|
// prev.loc = { |
|
// primary: prev.loc, |
|
// merged: node.loc |
|
// }; |
|
} |
|
} |
|
|
|
var _1MergeAtrule = function rejoinAtrule(ast, options) { |
|
relocateAtrules(ast, options); |
|
|
|
walk$4(ast, { |
|
visit: 'Atrule', |
|
reverse: true, |
|
enter: processAtrule |
|
}); |
|
}; |
|
|
|
var hasOwnProperty$3 = Object.prototype.hasOwnProperty; |
|
|
|
function isEqualSelectors(a, b) { |
|
var cursor1 = a.head; |
|
var cursor2 = b.head; |
|
|
|
while (cursor1 !== null && cursor2 !== null && cursor1.data.id === cursor2.data.id) { |
|
cursor1 = cursor1.next; |
|
cursor2 = cursor2.next; |
|
} |
|
|
|
return cursor1 === null && cursor2 === null; |
|
} |
|
|
|
function isEqualDeclarations(a, b) { |
|
var cursor1 = a.head; |
|
var cursor2 = b.head; |
|
|
|
while (cursor1 !== null && cursor2 !== null && cursor1.data.id === cursor2.data.id) { |
|
cursor1 = cursor1.next; |
|
cursor2 = cursor2.next; |
|
} |
|
|
|
return cursor1 === null && cursor2 === null; |
|
} |
|
|
|
function compareDeclarations(declarations1, declarations2) { |
|
var result = { |
|
eq: [], |
|
ne1: [], |
|
ne2: [], |
|
ne2overrided: [] |
|
}; |
|
|
|
var fingerprints = Object.create(null); |
|
var declarations2hash = Object.create(null); |
|
|
|
for (var cursor = declarations2.head; cursor; cursor = cursor.next) { |
|
declarations2hash[cursor.data.id] = true; |
|
} |
|
|
|
for (var cursor = declarations1.head; cursor; cursor = cursor.next) { |
|
var data = cursor.data; |
|
|
|
if (data.fingerprint) { |
|
fingerprints[data.fingerprint] = data.important; |
|
} |
|
|
|
if (declarations2hash[data.id]) { |
|
declarations2hash[data.id] = false; |
|
result.eq.push(data); |
|
} else { |
|
result.ne1.push(data); |
|
} |
|
} |
|
|
|
for (var cursor = declarations2.head; cursor; cursor = cursor.next) { |
|
var data = cursor.data; |
|
|
|
if (declarations2hash[data.id]) { |
|
// when declarations1 has an overriding declaration, this is not a difference |
|
// unless no !important is used on prev and !important is used on the following |
|
if (!hasOwnProperty$3.call(fingerprints, data.fingerprint) || |
|
(!fingerprints[data.fingerprint] && data.important)) { |
|
result.ne2.push(data); |
|
} |
|
|
|
result.ne2overrided.push(data); |
|
} |
|
} |
|
|
|
return result; |
|
} |
|
|
|
function addSelectors(dest, source) { |
|
source.each(function(sourceData) { |
|
var newStr = sourceData.id; |
|
var cursor = dest.head; |
|
|
|
while (cursor) { |
|
var nextStr = cursor.data.id; |
|
|
|
if (nextStr === newStr) { |
|
return; |
|
} |
|
|
|
if (nextStr > newStr) { |
|
break; |
|
} |
|
|
|
cursor = cursor.next; |
|
} |
|
|
|
dest.insert(dest.createItem(sourceData), cursor); |
|
}); |
|
|
|
return dest; |
|
} |
|
|
|
// check if simpleselectors has no equal specificity and element selector |
|
function hasSimilarSelectors(selectors1, selectors2) { |
|
var cursor1 = selectors1.head; |
|
|
|
while (cursor1 !== null) { |
|
var cursor2 = selectors2.head; |
|
|
|
while (cursor2 !== null) { |
|
if (cursor1.data.compareMarker === cursor2.data.compareMarker) { |
|
return true; |
|
} |
|
|
|
cursor2 = cursor2.next; |
|
} |
|
|
|
cursor1 = cursor1.next; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
// test node can't to be skipped |
|
function unsafeToSkipNode(node) { |
|
switch (node.type) { |
|
case 'Rule': |
|
// unsafe skip ruleset with selector similarities |
|
return hasSimilarSelectors(node.prelude.children, this); |
|
|
|
case 'Atrule': |
|
// can skip at-rules with blocks |
|
if (node.block) { |
|
// unsafe skip at-rule if block contains something unsafe to skip |
|
return node.block.children.some(unsafeToSkipNode, this); |
|
} |
|
break; |
|
|
|
case 'Declaration': |
|
return false; |
|
} |
|
|
|
// unsafe by default |
|
return true; |
|
} |
|
|
|
var utils$1 = { |
|
isEqualSelectors: isEqualSelectors, |
|
isEqualDeclarations: isEqualDeclarations, |
|
compareDeclarations: compareDeclarations, |
|
addSelectors: addSelectors, |
|
hasSimilarSelectors: hasSimilarSelectors, |
|
unsafeToSkipNode: unsafeToSkipNode |
|
}; |
|
|
|
var walk$5 = csstree_min.walk; |
|
|
|
|
|
function processRule(node, item, list) { |
|
var selectors = node.prelude.children; |
|
var declarations = node.block.children; |
|
|
|
list.prevUntil(item.prev, function(prev) { |
|
// skip non-ruleset node if safe |
|
if (prev.type !== 'Rule') { |
|
return utils$1.unsafeToSkipNode.call(selectors, prev); |
|
} |
|
|
|
var prevSelectors = prev.prelude.children; |
|
var prevDeclarations = prev.block.children; |
|
|
|
// try to join rulesets with equal pseudo signature |
|
if (node.pseudoSignature === prev.pseudoSignature) { |
|
// try to join by selectors |
|
if (utils$1.isEqualSelectors(prevSelectors, selectors)) { |
|
prevDeclarations.appendList(declarations); |
|
list.remove(item); |
|
return true; |
|
} |
|
|
|
// try to join by declarations |
|
if (utils$1.isEqualDeclarations(declarations, prevDeclarations)) { |
|
utils$1.addSelectors(prevSelectors, selectors); |
|
list.remove(item); |
|
return true; |
|
} |
|
} |
|
|
|
// go to prev ruleset if has no selector similarities |
|
return utils$1.hasSimilarSelectors(selectors, prevSelectors); |
|
}); |
|
} |
|
|
|
// NOTE: direction should be left to right, since rulesets merge to left |
|
// ruleset. When direction right to left unmerged rulesets may prevent lookup |
|
// TODO: remove initial merge |
|
var _2InitialMergeRuleset = function initialMergeRule(ast) { |
|
walk$5(ast, { |
|
visit: 'Rule', |
|
enter: processRule |
|
}); |
|
}; |
|
|
|
var List$2 = csstree_min.List; |
|
var walk$6 = csstree_min.walk; |
|
|
|
function processRule$1(node, item, list) { |
|
var selectors = node.prelude.children; |
|
|
|
// generate new rule sets: |
|
// .a, .b { color: red; } |
|
// -> |
|
// .a { color: red; } |
|
// .b { color: red; } |
|
|
|
// while there are more than 1 simple selector split for rulesets |
|
while (selectors.head !== selectors.tail) { |
|
var newSelectors = new List$2(); |
|
newSelectors.insert(selectors.remove(selectors.head)); |
|
|
|
list.insert(list.createItem({ |
|
type: 'Rule', |
|
loc: node.loc, |
|
prelude: { |
|
type: 'SelectorList', |
|
loc: node.prelude.loc, |
|
children: newSelectors |
|
}, |
|
block: { |
|
type: 'Block', |
|
loc: node.block.loc, |
|
children: node.block.children.copy() |
|
}, |
|
pseudoSignature: node.pseudoSignature |
|
}), item); |
|
} |
|
} |
|
|
|
var _3DisjoinRuleset = function disjoinRule(ast) { |
|
walk$6(ast, { |
|
visit: 'Rule', |
|
reverse: true, |
|
enter: processRule$1 |
|
}); |
|
}; |
|
|
|
var List$3 = csstree_min.List; |
|
var generate$3 = csstree_min.generate; |
|
var walk$7 = csstree_min.walk; |
|
|
|
var REPLACE = 1; |
|
var REMOVE = 2; |
|
var TOP = 0; |
|
var RIGHT = 1; |
|
var BOTTOM = 2; |
|
var LEFT = 3; |
|
var SIDES = ['top', 'right', 'bottom', 'left']; |
|
var SIDE = { |
|
'margin-top': 'top', |
|
'margin-right': 'right', |
|
'margin-bottom': 'bottom', |
|
'margin-left': 'left', |
|
|
|
'padding-top': 'top', |
|
'padding-right': 'right', |
|
'padding-bottom': 'bottom', |
|
'padding-left': 'left', |
|
|
|
'border-top-color': 'top', |
|
'border-right-color': 'right', |
|
'border-bottom-color': 'bottom', |
|
'border-left-color': 'left', |
|
'border-top-width': 'top', |
|
'border-right-width': 'right', |
|
'border-bottom-width': 'bottom', |
|
'border-left-width': 'left', |
|
'border-top-style': 'top', |
|
'border-right-style': 'right', |
|
'border-bottom-style': 'bottom', |
|
'border-left-style': 'left' |
|
}; |
|
var MAIN_PROPERTY = { |
|
'margin': 'margin', |
|
'margin-top': 'margin', |
|
'margin-right': 'margin', |
|
'margin-bottom': 'margin', |
|
'margin-left': 'margin', |
|
|
|
'padding': 'padding', |
|
'padding-top': 'padding', |
|
'padding-right': 'padding', |
|
'padding-bottom': 'padding', |
|
'padding-left': 'padding', |
|
|
|
'border-color': 'border-color', |
|
'border-top-color': 'border-color', |
|
'border-right-color': 'border-color', |
|
'border-bottom-color': 'border-color', |
|
'border-left-color': 'border-color', |
|
'border-width': 'border-width', |
|
'border-top-width': 'border-width', |
|
'border-right-width': 'border-width', |
|
'border-bottom-width': 'border-width', |
|
'border-left-width': 'border-width', |
|
'border-style': 'border-style', |
|
'border-top-style': 'border-style', |
|
'border-right-style': 'border-style', |
|
'border-bottom-style': 'border-style', |
|
'border-left-style': 'border-style' |
|
}; |
|
|
|
function TRBL(name) { |
|
this.name = name; |
|
this.loc = null; |
|
this.iehack = undefined; |
|
this.sides = { |
|
'top': null, |
|
'right': null, |
|
'bottom': null, |
|
'left': null |
|
}; |
|
} |
|
|
|
TRBL.prototype.getValueSequence = function(declaration, count) { |
|
var values = []; |
|
var iehack = ''; |
|
var hasBadValues = declaration.value.type !== 'Value' || declaration.value.children.some(function(child) { |
|
var special = false; |
|
|
|
switch (child.type) { |
|
case 'Identifier': |
|
switch (child.name) { |
|
case '\\0': |
|
case '\\9': |
|
iehack = child.name; |
|
return; |
|
|
|
case 'inherit': |
|
case 'initial': |
|
case 'unset': |
|
case 'revert': |
|
special = child.name; |
|
break; |
|
} |
|
break; |
|
|
|
case 'Dimension': |
|
switch (child.unit) { |
|
// is not supported until IE11 |
|
case 'rem': |
|
|
|
// v* units is too buggy across browsers and better |
|
// don't merge values with those units |
|
case 'vw': |
|
case 'vh': |
|
case 'vmin': |
|
case 'vmax': |
|
case 'vm': // IE9 supporting "vm" instead of "vmin". |
|
special = child.unit; |
|
break; |
|
} |
|
break; |
|
|
|
case 'Hash': // color |
|
case 'Number': |
|
case 'Percentage': |
|
break; |
|
|
|
case 'Function': |
|
if (child.name === 'var') { |
|
return true; |
|
} |
|
|
|
special = child.name; |
|
break; |
|
|
|
case 'WhiteSpace': |
|
return false; // ignore space |
|
|
|
default: |
|
return true; // bad value |
|
} |
|
|
|
values.push({ |
|
node: child, |
|
special: special, |
|
important: declaration.important |
|
}); |
|
}); |
|
|
|
if (hasBadValues || values.length > count) { |
|
return false; |
|
} |
|
|
|
if (typeof this.iehack === 'string' && this.iehack !== iehack) { |
|
return false; |
|
} |
|
|
|
this.iehack = iehack; // move outside |
|
|
|
return values; |
|
}; |
|
|
|
TRBL.prototype.canOverride = function(side, value) { |
|
var currentValue = this.sides[side]; |
|
|
|
return !currentValue || (value.important && !currentValue.important); |
|
}; |
|
|
|
TRBL.prototype.add = function(name, declaration) { |
|
function attemptToAdd() { |
|
var sides = this.sides; |
|
var side = SIDE[name]; |
|
|
|
if (side) { |
|
if (side in sides === false) { |
|
return false; |
|
} |
|
|
|
var values = this.getValueSequence(declaration, 1); |
|
|
|
if (!values || !values.length) { |
|
return false; |
|
} |
|
|
|
// can mix only if specials are equal |
|
for (var key in sides) { |
|
if (sides[key] !== null && sides[key].special !== values[0].special) { |
|
return false; |
|
} |
|
} |
|
|
|
if (!this.canOverride(side, values[0])) { |
|
return true; |
|
} |
|
|
|
sides[side] = values[0]; |
|
return true; |
|
} else if (name === this.name) { |
|
var values = this.getValueSequence(declaration, 4); |
|
|
|
if (!values || !values.length) { |
|
return false; |
|
} |
|
|
|
switch (values.length) { |
|
case 1: |
|
values[RIGHT] = values[TOP]; |
|
values[BOTTOM] = values[TOP]; |
|
values[LEFT] = values[TOP]; |
|
break; |
|
|
|
case 2: |
|
values[BOTTOM] = values[TOP]; |
|
values[LEFT] = values[RIGHT]; |
|
break; |
|
|
|
case 3: |
|
values[LEFT] = values[RIGHT]; |
|
break; |
|
} |
|
|
|
// can mix only if specials are equal |
|
for (var i = 0; i < 4; i++) { |
|
for (var key in sides) { |
|
if (sides[key] !== null && sides[key].special !== values[i].special) { |
|
return false; |
|
} |
|
} |
|
} |
|
|
|
for (var i = 0; i < 4; i++) { |
|
if (this.canOverride(SIDES[i], values[i])) { |
|
sides[SIDES[i]] = values[i]; |
|
} |
|
} |
|
|
|
return true; |
|
} |
|
} |
|
|
|
if (!attemptToAdd.call(this)) { |
|
return false; |
|
} |
|
|
|
// TODO: use it when we can refer to several points in source |
|
// if (this.loc) { |
|
// this.loc = { |
|
// primary: this.loc, |
|
// merged: declaration.loc |
|
// }; |
|
// } else { |
|
// this.loc = declaration.loc; |
|
// } |
|
if (!this.loc) { |
|
this.loc = declaration.loc; |
|
} |
|
|
|
return true; |
|
}; |
|
|
|
TRBL.prototype.isOkToMinimize = function() { |
|
var top = this.sides.top; |
|
var right = this.sides.right; |
|
var bottom = this.sides.bottom; |
|
var left = this.sides.left; |
|
|
|
if (top && right && bottom && left) { |
|
var important = |
|
top.important + |
|
right.important + |
|
bottom.important + |
|
left.important; |
|
|
|
return important === 0 || important === 4; |
|
} |
|
|
|
return false; |
|
}; |
|
|
|
TRBL.prototype.getValue = function() { |
|
var result = new List$3(); |
|
var sides = this.sides; |
|
var values = [ |
|
sides.top, |
|
sides.right, |
|
sides.bottom, |
|
sides.left |
|
]; |
|
var stringValues = [ |
|
generate$3(sides.top.node), |
|
generate$3(sides.right.node), |
|
generate$3(sides.bottom.node), |
|
generate$3(sides.left.node) |
|
]; |
|
|
|
if (stringValues[LEFT] === stringValues[RIGHT]) { |
|
values.pop(); |
|
if (stringValues[BOTTOM] === stringValues[TOP]) { |
|
values.pop(); |
|
if (stringValues[RIGHT] === stringValues[TOP]) { |
|
values.pop(); |
|
} |
|
} |
|
} |
|
|
|
for (var i = 0; i < values.length; i++) { |
|
if (i) { |
|
result.appendData({ type: 'WhiteSpace', value: ' ' }); |
|
} |
|
|
|
result.appendData(values[i].node); |
|
} |
|
|
|
if (this.iehack) { |
|
result.appendData({ type: 'WhiteSpace', value: ' ' }); |
|
result.appendData({ |
|
type: 'Identifier', |
|
loc: null, |
|
name: this.iehack |
|
}); |
|
} |
|
|
|
return { |
|
type: 'Value', |
|
loc: null, |
|
children: result |
|
}; |
|
}; |
|
|
|
TRBL.prototype.getDeclaration = function() { |
|
return { |
|
type: 'Declaration', |
|
loc: this.loc, |
|
important: this.sides.top.important, |
|
property: this.name, |
|
value: this.getValue() |
|
}; |
|
}; |
|
|
|
function processRule$2(rule, shorts, shortDeclarations, lastShortSelector) { |
|
var declarations = rule.block.children; |
|
var selector = rule.prelude.children.first().id; |
|
|
|
rule.block.children.eachRight(function(declaration, item) { |
|
var property = declaration.property; |
|
|
|
if (!MAIN_PROPERTY.hasOwnProperty(property)) { |
|
return; |
|
} |
|
|
|
var key = MAIN_PROPERTY[property]; |
|
var shorthand; |
|
var operation; |
|
|
|
if (!lastShortSelector || selector === lastShortSelector) { |
|
if (key in shorts) { |
|
operation = REMOVE; |
|
shorthand = shorts[key]; |
|
} |
|
} |
|
|
|
if (!shorthand || !shorthand.add(property, declaration)) { |
|
operation = REPLACE; |
|
shorthand = new TRBL(key); |
|
|
|
// if can't parse value ignore it and break shorthand children |
|
if (!shorthand.add(property, declaration)) { |
|
lastShortSelector = null; |
|
return; |
|
} |
|
} |
|
|
|
shorts[key] = shorthand; |
|
shortDeclarations.push({ |
|
operation: operation, |
|
block: declarations, |
|
item: item, |
|
shorthand: shorthand |
|
}); |
|
|
|
lastShortSelector = selector; |
|
}); |
|
|
|
return lastShortSelector; |
|
} |
|
|
|
function processShorthands(shortDeclarations, markDeclaration) { |
|
shortDeclarations.forEach(function(item) { |
|
var shorthand = item.shorthand; |
|
|
|
if (!shorthand.isOkToMinimize()) { |
|
return; |
|
} |
|
|
|
if (item.operation === REPLACE) { |
|
item.item.data = markDeclaration(shorthand.getDeclaration()); |
|
} else { |
|
item.block.remove(item.item); |
|
} |
|
}); |
|
} |
|
|
|
var _4RestructShorthand = function restructBlock(ast, indexer) { |
|
var stylesheetMap = {}; |
|
var shortDeclarations = []; |
|
|
|
walk$7(ast, { |
|
visit: 'Rule', |
|
reverse: true, |
|
enter: function(node) { |
|
var stylesheet = this.block || this.stylesheet; |
|
var ruleId = (node.pseudoSignature || '') + '|' + node.prelude.children.first().id; |
|
var ruleMap; |
|
var shorts; |
|
|
|
if (!stylesheetMap.hasOwnProperty(stylesheet.id)) { |
|
ruleMap = { |
|
lastShortSelector: null |
|
}; |
|
stylesheetMap[stylesheet.id] = ruleMap; |
|
} else { |
|
ruleMap = stylesheetMap[stylesheet.id]; |
|
} |
|
|
|
if (ruleMap.hasOwnProperty(ruleId)) { |
|
shorts = ruleMap[ruleId]; |
|
} else { |
|
shorts = {}; |
|
ruleMap[ruleId] = shorts; |
|
} |
|
|
|
ruleMap.lastShortSelector = processRule$2.call(this, node, shorts, shortDeclarations, ruleMap.lastShortSelector); |
|
} |
|
}); |
|
|
|
processShorthands(shortDeclarations, indexer.declaration); |
|
}; |
|
|
|
var resolveProperty = csstree_min.property; |
|
var resolveKeyword$4 = csstree_min.keyword; |
|
var walk$8 = csstree_min.walk; |
|
var generate$4 = csstree_min.generate; |
|
var fingerprintId = 1; |
|
var dontRestructure = { |
|
'src': 1 // https://github.com/afelix/csso/issues/50 |
|
}; |
|
|
|
var DONT_MIX_VALUE = { |
|
// https://developer.mozilla.org/en-US/docs/Web/CSS/display#Browser_compatibility |
|
'display': /table|ruby|flex|-(flex)?box$|grid|contents|run-in/i, |
|
// https://developer.mozilla.org/en/docs/Web/CSS/text-align |
|
'text-align': /^(start|end|match-parent|justify-all)$/i |
|
}; |
|
|
|
var SAFE_VALUES = { |
|
cursor: [ |
|
'auto', 'crosshair', 'default', 'move', 'text', 'wait', 'help', |
|
'n-resize', 'e-resize', 's-resize', 'w-resize', |
|
'ne-resize', 'nw-resize', 'se-resize', 'sw-resize', |
|
'pointer', 'progress', 'not-allowed', 'no-drop', 'vertical-text', 'all-scroll', |
|
'col-resize', 'row-resize' |
|
], |
|
overflow: [ |
|
'hidden', 'visible', 'scroll', 'auto' |
|
], |
|
position: [ |
|
'static', 'relative', 'absolute', 'fixed' |
|
] |
|
}; |
|
|
|
var NEEDLESS_TABLE = { |
|
'border-width': ['border'], |
|
'border-style': ['border'], |
|
'border-color': ['border'], |
|
'border-top': ['border'], |
|
'border-right': ['border'], |
|
'border-bottom': ['border'], |
|
'border-left': ['border'], |
|
'border-top-width': ['border-top', 'border-width', 'border'], |
|
'border-right-width': ['border-right', 'border-width', 'border'], |
|
'border-bottom-width': ['border-bottom', 'border-width', 'border'], |
|
'border-left-width': ['border-left', 'border-width', 'border'], |
|
'border-top-style': ['border-top', 'border-style', 'border'], |
|
'border-right-style': ['border-right', 'border-style', 'border'], |
|
'border-bottom-style': ['border-bottom', 'border-style', 'border'], |
|
'border-left-style': ['border-left', 'border-style', 'border'], |
|
'border-top-color': ['border-top', 'border-color', 'border'], |
|
'border-right-color': ['border-right', 'border-color', 'border'], |
|
'border-bottom-color': ['border-bottom', 'border-color', 'border'], |
|
'border-left-color': ['border-left', 'border-color', 'border'], |
|
'margin-top': ['margin'], |
|
'margin-right': ['margin'], |
|
'margin-bottom': ['margin'], |
|
'margin-left': ['margin'], |
|
'padding-top': ['padding'], |
|
'padding-right': ['padding'], |
|
'padding-bottom': ['padding'], |
|
'padding-left': ['padding'], |
|
'font-style': ['font'], |
|
'font-variant': ['font'], |
|
'font-weight': ['font'], |
|
'font-size': ['font'], |
|
'font-family': ['font'], |
|
'list-style-type': ['list-style'], |
|
'list-style-position': ['list-style'], |
|
'list-style-image': ['list-style'] |
|
}; |
|
|
|
function getPropertyFingerprint(propertyName, declaration, fingerprints) { |
|
var realName = resolveProperty(propertyName).basename; |
|
|
|
if (realName === 'background') { |
|
return propertyName + ':' + generate$4(declaration.value); |
|
} |
|
|
|
var declarationId = declaration.id; |
|
var fingerprint = fingerprints[declarationId]; |
|
|
|
if (!fingerprint) { |
|
switch (declaration.value.type) { |
|
case 'Value': |
|
var vendorId = ''; |
|
var iehack = ''; |
|
var special = {}; |
|
var raw = false; |
|
|
|
declaration.value.children.each(function walk(node) { |
|
switch (node.type) { |
|
case 'Value': |
|
case 'Brackets': |
|
case 'Parentheses': |
|
node.children.each(walk); |
|
break; |
|
|
|
case 'Raw': |
|
raw = true; |
|
break; |
|
|
|
case 'Identifier': |
|
var name = node.name; |
|
|
|
if (!vendorId) { |
|
vendorId = resolveKeyword$4(name).vendor; |
|
} |
|
|
|
if (/\\[09]/.test(name)) { |
|
iehack = RegExp.lastMatch; |
|
} |
|
|
|
if (SAFE_VALUES.hasOwnProperty(realName)) { |
|
if (SAFE_VALUES[realName].indexOf(name) === -1) { |
|
special[name] = true; |
|
} |
|
} else if (DONT_MIX_VALUE.hasOwnProperty(realName)) { |
|
if (DONT_MIX_VALUE[realName].test(name)) { |
|
special[name] = true; |
|
} |
|
} |
|
|
|
break; |
|
|
|
case 'Function': |
|
var name = node.name; |
|
|
|
if (!vendorId) { |
|
vendorId = resolveKeyword$4(name).vendor; |
|
} |
|
|
|
if (name === 'rect') { |
|
// there are 2 forms of rect: |
|
// rect(<top>, <right>, <bottom>, <left>) - standart |
|
// rect(<top> <right> <bottom> <left>) – backwards compatible syntax |
|
// only the same form values can be merged |
|
var hasComma = node.children.some(function(node) { |
|
return node.type === 'Operator' && node.value === ','; |
|
}); |
|
if (!hasComma) { |
|
name = 'rect-backward'; |
|
} |
|
} |
|
|
|
special[name + '()'] = true; |
|
|
|
// check nested tokens too |
|
node.children.each(walk); |
|
|
|
break; |
|
|
|
case 'Dimension': |
|
var unit = node.unit; |
|
|
|
if (/\\[09]/.test(unit)) { |
|
iehack = RegExp.lastMatch; |
|
} |
|
|
|
switch (unit) { |
|
// is not supported until IE11 |
|
case 'rem': |
|
|
|
// v* units is too buggy across browsers and better |
|
// don't merge values with those units |
|
case 'vw': |
|
case 'vh': |
|
case 'vmin': |
|
case 'vmax': |
|
case 'vm': // IE9 supporting "vm" instead of "vmin". |
|
special[unit] = true; |
|
break; |
|
} |
|
break; |
|
} |
|
}); |
|
|
|
fingerprint = raw |
|
? '!' + fingerprintId++ |
|
: '!' + Object.keys(special).sort() + '|' + iehack + vendorId; |
|
break; |
|
|
|
case 'Raw': |
|
fingerprint = '!' + declaration.value.value; |
|
break; |
|
|
|
default: |
|
fingerprint = generate$4(declaration.value); |
|
} |
|
|
|
fingerprints[declarationId] = fingerprint; |
|
} |
|
|
|
return propertyName + fingerprint; |
|
} |
|
|
|
function needless(props, declaration, fingerprints) { |
|
var property = resolveProperty(declaration.property); |
|
|
|
if (NEEDLESS_TABLE.hasOwnProperty(property.basename)) { |
|
var table = NEEDLESS_TABLE[property.basename]; |
|
|
|
for (var i = 0; i < table.length; i++) { |
|
var ppre = getPropertyFingerprint(property.prefix + table[i], declaration, fingerprints); |
|
var prev = props.hasOwnProperty(ppre) ? props[ppre] : null; |
|
|
|
if (prev && (!declaration.important || prev.item.data.important)) { |
|
return prev; |
|
} |
|
} |
|
} |
|
} |
|
|
|
function processRule$3(rule, item, list, props, fingerprints) { |
|
var declarations = rule.block.children; |
|
|
|
declarations.eachRight(function(declaration, declarationItem) { |
|
var property = declaration.property; |
|
var fingerprint = getPropertyFingerprint(property, declaration, fingerprints); |
|
var prev = props[fingerprint]; |
|
|
|
if (prev && !dontRestructure.hasOwnProperty(property)) { |
|
if (declaration.important && !prev.item.data.important) { |
|
props[fingerprint] = { |
|
block: declarations, |
|
item: declarationItem |
|
}; |
|
|
|
prev.block.remove(prev.item); |
|
|
|
// TODO: use it when we can refer to several points in source |
|
// declaration.loc = { |
|
// primary: declaration.loc, |
|
// merged: prev.item.data.loc |
|
// }; |
|
} else { |
|
declarations.remove(declarationItem); |
|
|
|
// TODO: use it when we can refer to several points in source |
|
// prev.item.data.loc = { |
|
// primary: prev.item.data.loc, |
|
// merged: declaration.loc |
|
// }; |
|
} |
|
} else { |
|
var prev = needless(props, declaration, fingerprints); |
|
|
|
if (prev) { |
|
declarations.remove(declarationItem); |
|
|
|
// TODO: use it when we can refer to several points in source |
|
// prev.item.data.loc = { |
|
// primary: prev.item.data.loc, |
|
// merged: declaration.loc |
|
// }; |
|
} else { |
|
declaration.fingerprint = fingerprint; |
|
|
|
props[fingerprint] = { |
|
block: declarations, |
|
item: declarationItem |
|
}; |
|
} |
|
} |
|
}); |
|
|
|
if (declarations.isEmpty()) { |
|
list.remove(item); |
|
} |
|
} |
|
|
|
var _6RestructBlock = function restructBlock(ast) { |
|
var stylesheetMap = {}; |
|
var fingerprints = Object.create(null); |
|
|
|
walk$8(ast, { |
|
visit: 'Rule', |
|
reverse: true, |
|
enter: function(node, item, list) { |
|
var stylesheet = this.block || this.stylesheet; |
|
var ruleId = (node.pseudoSignature || '') + '|' + node.prelude.children.first().id; |
|
var ruleMap; |
|
var props; |
|
|
|
if (!stylesheetMap.hasOwnProperty(stylesheet.id)) { |
|
ruleMap = {}; |
|
stylesheetMap[stylesheet.id] = ruleMap; |
|
} else { |
|
ruleMap = stylesheetMap[stylesheet.id]; |
|
} |
|
|
|
if (ruleMap.hasOwnProperty(ruleId)) { |
|
props = ruleMap[ruleId]; |
|
} else { |
|
props = {}; |
|
ruleMap[ruleId] = props; |
|
} |
|
|
|
processRule$3.call(this, node, item, list, props, fingerprints); |
|
} |
|
}); |
|
}; |
|
|
|
var walk$9 = csstree_min.walk; |
|
|
|
|
|
/* |
|
At this step all rules has single simple selector. We try to join by equal |
|
declaration blocks to first rule, e.g. |
|
|
|
.a { color: red } |
|
b { ... } |
|
.b { color: red } |
|
-> |
|
.a, .b { color: red } |
|
b { ... } |
|
*/ |
|
|
|
function processRule$4(node, item, list) { |
|
var selectors = node.prelude.children; |
|
var declarations = node.block.children; |
|
var nodeCompareMarker = selectors.first().compareMarker; |
|
var skippedCompareMarkers = {}; |
|
|
|
list.nextUntil(item.next, function(next, nextItem) { |
|
// skip non-ruleset node if safe |
|
if (next.type !== 'Rule') { |
|
return utils$1.unsafeToSkipNode.call(selectors, next); |
|
} |
|
|
|
if (node.pseudoSignature !== next.pseudoSignature) { |
|
return true; |
|
} |
|
|
|
var nextFirstSelector = next.prelude.children.head; |
|
var nextDeclarations = next.block.children; |
|
var nextCompareMarker = nextFirstSelector.data.compareMarker; |
|
|
|
// if next ruleset has same marked as one of skipped then stop joining |
|
if (nextCompareMarker in skippedCompareMarkers) { |
|
return true; |
|
} |
|
|
|
// try to join by selectors |
|
if (selectors.head === selectors.tail) { |
|
if (selectors.first().id === nextFirstSelector.data.id) { |
|
declarations.appendList(nextDeclarations); |
|
list.remove(nextItem); |
|
return; |
|
} |
|
} |
|
|
|
// try to join by properties |
|
if (utils$1.isEqualDeclarations(declarations, nextDeclarations)) { |
|
var nextStr = nextFirstSelector.data.id; |
|
|
|
selectors.some(function(data, item) { |
|
var curStr = data.id; |
|
|
|
if (nextStr < curStr) { |
|
selectors.insert(nextFirstSelector, item); |
|
return true; |
|
} |
|
|
|
if (!item.next) { |
|
selectors.insert(nextFirstSelector); |
|
return true; |
|
} |
|
}); |
|
|
|
list.remove(nextItem); |
|
return; |
|
} |
|
|
|
// go to next ruleset if current one can be skipped (has no equal specificity nor element selector) |
|
if (nextCompareMarker === nodeCompareMarker) { |
|
return true; |
|
} |
|
|
|
skippedCompareMarkers[nextCompareMarker] = true; |
|
}); |
|
} |
|
|
|
var _7MergeRuleset = function mergeRule(ast) { |
|
walk$9(ast, { |
|
visit: 'Rule', |
|
enter: processRule$4 |
|
}); |
|
}; |
|
|
|
var List$4 = csstree_min.List; |
|
var walk$a = csstree_min.walk; |
|
|
|
|
|
function calcSelectorLength(list) { |
|
var length = 0; |
|
|
|
list.each(function(data) { |
|
length += data.id.length + 1; |
|
}); |
|
|
|
return length - 1; |
|
} |
|
|
|
function calcDeclarationsLength(tokens) { |
|
var length = 0; |
|
|
|
for (var i = 0; i < tokens.length; i++) { |
|
length += tokens[i].length; |
|
} |
|
|
|
return ( |
|
length + // declarations |
|
tokens.length - 1 // delimeters |
|
); |
|
} |
|
|
|
function processRule$5(node, item, list) { |
|
var avoidRulesMerge = this.block !== null ? this.block.avoidRulesMerge : false; |
|
var selectors = node.prelude.children; |
|
var block = node.block; |
|
var disallowDownMarkers = Object.create(null); |
|
var allowMergeUp = true; |
|
var allowMergeDown = true; |
|
|
|
list.prevUntil(item.prev, function(prev, prevItem) { |
|
var prevBlock = prev.block; |
|
var prevType = prev.type; |
|
|
|
if (prevType !== 'Rule') { |
|
var unsafe = utils$1.unsafeToSkipNode.call(selectors, prev); |
|
|
|
if (!unsafe && prevType === 'Atrule' && prevBlock) { |
|
walk$a(prevBlock, { |
|
visit: 'Rule', |
|
enter: function(node) { |
|
node.prelude.children.each(function(data) { |
|
disallowDownMarkers[data.compareMarker] = true; |
|
}); |
|
} |
|
}); |
|
} |
|
|
|
return unsafe; |
|
} |
|
|
|
var prevSelectors = prev.prelude.children; |
|
|
|
if (node.pseudoSignature !== prev.pseudoSignature) { |
|
return true; |
|
} |
|
|
|
allowMergeDown = !prevSelectors.some(function(selector) { |
|
return selector.compareMarker in disallowDownMarkers; |
|
}); |
|
|
|
// try prev ruleset if simpleselectors has no equal specifity and element selector |
|
if (!allowMergeDown && !allowMergeUp) { |
|
return true; |
|
} |
|
|
|
// try to join by selectors |
|
if (allowMergeUp && utils$1.isEqualSelectors(prevSelectors, selectors)) { |
|
prevBlock.children.appendList(block.children); |
|
list.remove(item); |
|
return true; |
|
} |
|
|
|
// try to join by properties |
|
var diff = utils$1.compareDeclarations(block.children, prevBlock.children); |
|
|
|
// console.log(diff.eq, diff.ne1, diff.ne2); |
|
|
|
if (diff.eq.length) { |
|
if (!diff.ne1.length && !diff.ne2.length) { |
|
// equal blocks |
|
if (allowMergeDown) { |
|
utils$1.addSelectors(selectors, prevSelectors); |
|
list.remove(prevItem); |
|
} |
|
|
|
return true; |
|
} else if (!avoidRulesMerge) { /* probably we don't need to prevent those merges for @keyframes |
|
TODO: need to be checked */ |
|
|
|
if (diff.ne1.length && !diff.ne2.length) { |
|
// prevBlock is subset block |
|
var selectorLength = calcSelectorLength(selectors); |
|
var blockLength = calcDeclarationsLength(diff.eq); // declarations length |
|
|
|
if (allowMergeUp && selectorLength < blockLength) { |
|
utils$1.addSelectors(prevSelectors, selectors); |
|
block.children = new List$4().fromArray(diff.ne1); |
|
} |
|
} else if (!diff.ne1.length && diff.ne2.length) { |
|
// node is subset of prevBlock |
|
var selectorLength = calcSelectorLength(prevSelectors); |
|
var blockLength = calcDeclarationsLength(diff.eq); // declarations length |
|
|
|
if (allowMergeDown && selectorLength < blockLength) { |
|
utils$1.addSelectors(selectors, prevSelectors); |
|
prevBlock.children = new List$4().fromArray(diff.ne2); |
|
} |
|
} else { |
|
// diff.ne1.length && diff.ne2.length |
|
// extract equal block |
|
var newSelector = { |
|
type: 'SelectorList', |
|
loc: null, |
|
children: utils$1.addSelectors(prevSelectors.copy(), selectors) |
|
}; |
|
var newBlockLength = calcSelectorLength(newSelector.children) + 2; // selectors length + curly braces length |
|
var blockLength = calcDeclarationsLength(diff.eq); // declarations length |
|
|
|
// create new ruleset if declarations length greater than |
|
// ruleset description overhead |
|
if (blockLength >= newBlockLength) { |
|
var newItem = list.createItem({ |
|
type: 'Rule', |
|
loc: null, |
|
prelude: newSelector, |
|
block: { |
|
type: 'Block', |
|
loc: null, |
|
children: new List$4().fromArray(diff.eq) |
|
}, |
|
pseudoSignature: node.pseudoSignature |
|
}); |
|
|
|
block.children = new List$4().fromArray(diff.ne1); |
|
prevBlock.children = new List$4().fromArray(diff.ne2overrided); |
|
|
|
if (allowMergeUp) { |
|
list.insert(newItem, prevItem); |
|
} else { |
|
list.insert(newItem, item); |
|
} |
|
|
|
return true; |
|
} |
|
} |
|
} |
|
} |
|
|
|
if (allowMergeUp) { |
|
// TODO: disallow up merge only if any property interception only (i.e. diff.ne2overrided.length > 0); |
|
// await property families to find property interception correctly |
|
allowMergeUp = !prevSelectors.some(function(prevSelector) { |
|
return selectors.some(function(selector) { |
|
return selector.compareMarker === prevSelector.compareMarker; |
|
}); |
|
}); |
|
} |
|
|
|
prevSelectors.each(function(data) { |
|
disallowDownMarkers[data.compareMarker] = true; |
|
}); |
|
}); |
|
} |
|
|
|
var _8RestructRuleset = function restructRule(ast) { |
|
walk$a(ast, { |
|
visit: 'Rule', |
|
reverse: true, |
|
enter: processRule$5 |
|
}); |
|
}; |
|
|
|
var restructure = function(ast, options) { |
|
// prepare ast for restructing |
|
var indexer = prepare(ast, options); |
|
options.logger('prepare', ast); |
|
|
|
_1MergeAtrule(ast, options); |
|
options.logger('mergeAtrule', ast); |
|
|
|
_2InitialMergeRuleset(ast); |
|
options.logger('initialMergeRuleset', ast); |
|
|
|
_3DisjoinRuleset(ast); |
|
options.logger('disjoinRuleset', ast); |
|
|
|
_4RestructShorthand(ast, indexer); |
|
options.logger('restructShorthand', ast); |
|
|
|
_6RestructBlock(ast); |
|
options.logger('restructBlock', ast); |
|
|
|
_7MergeRuleset(ast); |
|
options.logger('mergeRuleset', ast); |
|
|
|
_8RestructRuleset(ast); |
|
options.logger('restructRuleset', ast); |
|
}; |
|
|
|
var List$5 = csstree_min.List; |
|
var clone = csstree_min.clone; |
|
|
|
|
|
|
|
|
|
var walk$b = csstree_min.walk; |
|
|
|
function readChunk(children, specialComments) { |
|
var buffer = new List$5(); |
|
var nonSpaceTokenInBuffer = false; |
|
var protectedComment; |
|
|
|
children.nextUntil(children.head, function(node, item, list) { |
|
if (node.type === 'Comment') { |
|
if (!specialComments || node.value.charAt(0) !== '!') { |
|
list.remove(item); |
|
return; |
|
} |
|
|
|
if (nonSpaceTokenInBuffer || protectedComment) { |
|
return true; |
|
} |
|
|
|
list.remove(item); |
|
protectedComment = node; |
|
return; |
|
} |
|
|
|
if (node.type !== 'WhiteSpace') { |
|
nonSpaceTokenInBuffer = true; |
|
} |
|
|
|
buffer.insert(list.remove(item)); |
|
}); |
|
|
|
return { |
|
comment: protectedComment, |
|
stylesheet: { |
|
type: 'StyleSheet', |
|
loc: null, |
|
children: buffer |
|
} |
|
}; |
|
} |
|
|
|
function compressChunk(ast, firstAtrulesAllowed, num, options) { |
|
options.logger('Compress block #' + num, null, true); |
|
|
|
var seed = 1; |
|
|
|
if (ast.type === 'StyleSheet') { |
|
ast.firstAtrulesAllowed = firstAtrulesAllowed; |
|
ast.id = seed++; |
|
} |
|
|
|
walk$b(ast, { |
|
visit: 'Atrule', |
|
enter: function markScopes(node) { |
|
if (node.block !== null) { |
|
node.block.id = seed++; |
|
} |
|
} |
|
}); |
|
options.logger('init', ast); |
|
|
|
// remove redundant |
|
clean(ast, options); |
|
options.logger('clean', ast); |
|
|
|
// replace nodes for shortened forms |
|
replace(ast); |
|
options.logger('replace', ast); |
|
|
|
// structure optimisations |
|
if (options.restructuring) { |
|
restructure(ast, options); |
|
} |
|
|
|
return ast; |
|
} |
|
|
|
function getCommentsOption(options) { |
|
var comments = 'comments' in options ? options.comments : 'exclamation'; |
|
|
|
if (typeof comments === 'boolean') { |
|
comments = comments ? 'exclamation' : false; |
|
} else if (comments !== 'exclamation' && comments !== 'first-exclamation') { |
|
comments = false; |
|
} |
|
|
|
return comments; |
|
} |
|
|
|
function getRestructureOption(options) { |
|
if ('restructure' in options) { |
|
return options.restructure; |
|
} |
|
|
|
return 'restructuring' in options ? options.restructuring : true; |
|
} |
|
|
|
function wrapBlock(block) { |
|
return new List$5().appendData({ |
|
type: 'Rule', |
|
loc: null, |
|
prelude: { |
|
type: 'SelectorList', |
|
loc: null, |
|
children: new List$5().appendData({ |
|
type: 'Selector', |
|
loc: null, |
|
children: new List$5().appendData({ |
|
type: 'TypeSelector', |
|
loc: null, |
|
name: 'x' |
|
}) |
|
}) |
|
}, |
|
block: block |
|
}); |
|
} |
|
|
|
var compress = function compress(ast, options) { |
|
ast = ast || { type: 'StyleSheet', loc: null, children: new List$5() }; |
|
options = options || {}; |
|
|
|
var compressOptions = { |
|
logger: typeof options.logger === 'function' ? options.logger : function() {}, |
|
restructuring: getRestructureOption(options), |
|
forceMediaMerge: Boolean(options.forceMediaMerge), |
|
usage: options.usage ? usage.buildIndex(options.usage) : false |
|
}; |
|
var specialComments = getCommentsOption(options); |
|
var firstAtrulesAllowed = true; |
|
var input; |
|
var output = new List$5(); |
|
var chunk; |
|
var chunkNum = 1; |
|
var chunkChildren; |
|
|
|
if (options.clone) { |
|
ast = clone(ast); |
|
} |
|
|
|
if (ast.type === 'StyleSheet') { |
|
input = ast.children; |
|
ast.children = output; |
|
} else { |
|
input = wrapBlock(ast); |
|
} |
|
|
|
do { |
|
chunk = readChunk(input, Boolean(specialComments)); |
|
compressChunk(chunk.stylesheet, firstAtrulesAllowed, chunkNum++, compressOptions); |
|
chunkChildren = chunk.stylesheet.children; |
|
|
|
if (chunk.comment) { |
|
// add \n before comment if there is another content in output |
|
if (!output.isEmpty()) { |
|
output.insert(List$5.createItem({ |
|
type: 'Raw', |
|
value: '\n' |
|
})); |
|
} |
|
|
|
output.insert(List$5.createItem(chunk.comment)); |
|
|
|
// add \n after comment if chunk is not empty |
|
if (!chunkChildren.isEmpty()) { |
|
output.insert(List$5.createItem({ |
|
type: 'Raw', |
|
value: '\n' |
|
})); |
|
} |
|
} |
|
|
|
if (firstAtrulesAllowed && !chunkChildren.isEmpty()) { |
|
var lastRule = chunkChildren.last(); |
|
|
|
if (lastRule.type !== 'Atrule' || |
|
(lastRule.name !== 'import' && lastRule.name !== 'charset')) { |
|
firstAtrulesAllowed = false; |
|
} |
|
} |
|
|
|
if (specialComments !== 'exclamation') { |
|
specialComments = false; |
|
} |
|
|
|
output.appendList(chunkChildren); |
|
} while (!input.isEmpty()); |
|
|
|
return { |
|
ast: ast |
|
}; |
|
}; |
|
|
|
var version = "4.2.0"; |
|
var _package = { |
|
version: version |
|
}; |
|
|
|
var _package$1 = /*#__PURE__*/Object.freeze({ |
|
__proto__: null, |
|
version: version, |
|
'default': _package |
|
}); |
|
|
|
var require$$0 = getCjsExportFromNamespace(_package$1); |
|
|
|
var parse = csstree_min.parse; |
|
|
|
var generate$5 = csstree_min.generate; |
|
|
|
function debugOutput(name, options, startTime, data) { |
|
if (options.debug) { |
|
console.error('## ' + name + ' done in %d ms\n', Date.now() - startTime); |
|
} |
|
|
|
return data; |
|
} |
|
|
|
function createDefaultLogger(level) { |
|
var lastDebug; |
|
|
|
return function logger(title, ast) { |
|
var line = title; |
|
|
|
if (ast) { |
|
line = '[' + ((Date.now() - lastDebug) / 1000).toFixed(3) + 's] ' + line; |
|
} |
|
|
|
if (level > 1 && ast) { |
|
var css = generate$5(ast); |
|
|
|
// when level 2, limit css to 256 symbols |
|
if (level === 2 && css.length > 256) { |
|
css = css.substr(0, 256) + '...'; |
|
} |
|
|
|
line += '\n ' + css + '\n'; |
|
} |
|
|
|
console.error(line); |
|
lastDebug = Date.now(); |
|
}; |
|
} |
|
|
|
function copy(obj) { |
|
var result = {}; |
|
|
|
for (var key in obj) { |
|
result[key] = obj[key]; |
|
} |
|
|
|
return result; |
|
} |
|
|
|
function buildCompressOptions(options) { |
|
options = copy(options); |
|
|
|
if (typeof options.logger !== 'function' && options.debug) { |
|
options.logger = createDefaultLogger(options.debug); |
|
} |
|
|
|
return options; |
|
} |
|
|
|
function runHandler(ast, options, handlers) { |
|
if (!Array.isArray(handlers)) { |
|
handlers = [handlers]; |
|
} |
|
|
|
handlers.forEach(function(fn) { |
|
fn(ast, options); |
|
}); |
|
} |
|
|
|
function minify(context, source, options) { |
|
options = options || {}; |
|
|
|
var filename = options.filename || '<unknown>'; |
|
var result; |
|
|
|
// parse |
|
var ast = debugOutput('parsing', options, Date.now(), |
|
parse(source, { |
|
context: context, |
|
filename: filename, |
|
positions: Boolean(options.sourceMap) |
|
}) |
|
); |
|
|
|
// before compress handlers |
|
if (options.beforeCompress) { |
|
debugOutput('beforeCompress', options, Date.now(), |
|
runHandler(ast, options, options.beforeCompress) |
|
); |
|
} |
|
|
|
// compress |
|
var compressResult = debugOutput('compress', options, Date.now(), |
|
compress(ast, buildCompressOptions(options)) |
|
); |
|
|
|
// after compress handlers |
|
if (options.afterCompress) { |
|
debugOutput('afterCompress', options, Date.now(), |
|
runHandler(compressResult, options, options.afterCompress) |
|
); |
|
} |
|
|
|
// generate |
|
if (options.sourceMap) { |
|
result = debugOutput('generate(sourceMap: true)', options, Date.now(), (function() { |
|
var tmp = generate$5(compressResult.ast, { sourceMap: true }); |
|
tmp.map._file = filename; // since other tools can relay on file in source map transform chain |
|
tmp.map.setSourceContent(filename, source); |
|
return tmp; |
|
}())); |
|
} else { |
|
result = debugOutput('generate', options, Date.now(), { |
|
css: generate$5(compressResult.ast), |
|
map: null |
|
}); |
|
} |
|
|
|
return result; |
|
} |
|
|
|
function minifyStylesheet(source, options) { |
|
return minify('stylesheet', source, options); |
|
} |
|
|
|
function minifyBlock(source, options) { |
|
return minify('declarationList', source, options); |
|
} |
|
|
|
var lib = { |
|
version: require$$0.version, |
|
|
|
// main methods |
|
minify: minifyStylesheet, |
|
minifyBlock: minifyBlock, |
|
|
|
// css syntax parser/walkers/generator/etc |
|
syntax: Object.assign({ |
|
compress: compress |
|
}, csstree_min) |
|
}; |
|
var lib_1 = lib.version; |
|
var lib_2 = lib.minify; |
|
var lib_3 = lib.minifyBlock; |
|
var lib_4 = lib.syntax; |
|
|
|
exports.default = lib; |
|
exports.minify = lib_2; |
|
exports.minifyBlock = lib_3; |
|
exports.syntax = lib_4; |
|
exports.version = lib_1; |
|
|
|
Object.defineProperty(exports, '__esModule', { value: true }); |
|
|
|
})));
|
|
|