@codesandbox/sandpack-client/sandpack/static/js/less-4.1.2.min.js

<img style="width:100%" src="https://user-images.githubusercontent.com/4838076/143581035-ebee5ba2-9cb1-4fe8-a05b-2f44bd69bb4b.gif" alt="Component toolkit for live running code editing experiences" />

/**
 * Less - Leaner CSS v4.1.2
 * http://lesscss.org
 * 
 * Copyright (c) 2009-2021, Alexis Sellier <self@cloudhead.net>
 * Licensed under the Apache-2.0 License.
 *
 * @license Apache-2.0
 */
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j=function(e,t,i,n,r,s){this.value=e,this._index=t,this._fileInfo=i,this.mapLines=n,this.rulesetLike=void 0!==r&&r,this.allowRoot=!0,this.copyVisibilityInfo(s)};j.prototype=Object.assign(new u,{type:"Anonymous",eval:function(){return new j(this.value,this._index,this._fileInfo,this.mapLines,this.rulesetLike,this.visibilityInfo())},compare:function(e){return e.toCSS&&this.toCSS()===e.toCSS()?0:void 0},isRulesetLike:function(){return this.rulesetLike},genCSS:function(e,t){this.nodeVisible=Boolean(this.value),this.nodeVisible&&t.add(this.value,this._fileInfo,this._index,this.mapLines)}});var N=g;var D=function(e,t,i,n,r,s,o,a){this.name=e,this.value=t instanceof u?t:new $([t?new j(t):null]),this.important=i?" 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a=0;a<n.elements.length;a++)if(n.elements[a].isVariable){s=!0;break}t[r]=n,n.evaldCondition&&(o=!0)}if(s){var l=new Array(i);for(r=0;r<i;r++)n=t[r],l[r]=n.toCSS(e);this.parse.parseNode(l.join(","),["selectors"],t[0].getIndex(),t[0].fileInfo(),(function(e,i){i&&(t=E(i))}))}Q.reset()}else o=!0;var c,h,f=this.rules?k(this.rules):null,p=new K(t,f,this.strictImports,this.visibilityInfo());p.originalRuleset=this,p.root=this.root,p.firstRoot=this.firstRoot,p.allowImports=this.allowImports,this.debugInfo&&(p.debugInfo=this.debugInfo),o||(f.length=0),p.functionRegistry=function(e){for(var t,i=0,n=e.length;i!==n;++i)if(t=e[i].functionRegistry)return t;return H}(e.frames).inherit();var v=e.frames;v.unshift(p);var d=e.selectors;d||(e.selectors=d=[]),d.unshift(this.selectors),(p.root||p.allowImports||!p.strictImports)&&p.evalImports(e);var m=p.rules;for(r=0;c=m[r];r++)c.evalFirst&&(m[r]=c.eval(e));var g=e.mediaBlocks&&e.mediaBlocks.length||0;for(r=0;c=m[r];r++)"MixinCall"===c.type?(f=c.eval(e).filter((function(e){return!(e instanceof D&&e.variable)||!p.variable(e.name)})),m.splice.apply(m,[r,1].concat(f)),r+=f.length-1,p.resetCache()):"VariableCall"===c.type&&(f=c.eval(e).rules.filter((function(e){return!(e instanceof D&&e.variable)})),m.splice.apply(m,[r,1].concat(f)),r+=f.length-1,p.resetCache());for(r=0;c=m[r];r++)c.evalFirst||(m[r]=c=c.eval?c.eval(e):c);for(r=0;c=m[r];r++)if(c instanceof K&&c.selectors&&1===c.selectors.length&&c.selectors[0]&&c.selectors[0].isJustParentSelector()){m.splice(r--,1);for(a=0;h=c.rules[a];a++)h instanceof u&&(h.copyVisibilityInfo(c.visibilityInfo()),h instanceof D&&h.variable||m.splice(++r,0,h))}if(v.shift(),d.shift(),e.mediaBlocks)for(r=g;r<e.mediaBlocks.length;r++)e.mediaBlocks[r].bubbleSelectors(t);return p},evalImports:function(e){var 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t=e.mediaPath,i=e.mediaBlocks,e.mediaPath=[],e.mediaBlocks=[],n&&(n=n.eval(e)),r&&((r=[r[0].eval(e)])[0].root=!0),e.mediaPath=t,e.mediaBlocks=i,new Z(this.name,n,r,this.getIndex(),this.fileInfo(),this.debugInfo,this.isRooted,this.visibilityInfo())},variable:function(e){if(this.rules)return K.prototype.variable.call(this.rules[0],e)},find:function(){if(this.rules)return K.prototype.find.apply(this.rules[0],arguments)},rulesets:function(){if(this.rules)return K.prototype.rulesets.apply(this.rules[0])},outputRuleset:function(e,t,i){var n,r=i.length;if(e.tabLevel=1+(0|e.tabLevel),e.compress){for(t.add("{"),n=0;n<r;n++)i[n].genCSS(e,t);return t.add("}"),void e.tabLevel--}var s="\n"+Array(e.tabLevel).join("  "),o=s+"  ";if(r){for(t.add(" {"+o),i[0].genCSS(e,t),n=1;n<r;n++)t.add(o),i[n].genCSS(e,t);t.add(s+"}")}else t.add(" {"+s+"}");e.tabLevel--}});var X=function(e,t){this.ruleset=e,this.frames=t,this.setParent(this.ruleset,this)};X.prototype=Object.assign(new u,{type:"DetachedRuleset",evalFirst:!0,accept:function(e){this.ruleset=e.visit(this.ruleset)},eval:function(e){var t=this.frames||k(e.frames);return new X(this.ruleset,t)},callEval:function(e){return this.ruleset.eval(this.frames?new q.Eval(e,this.frames.concat(e.frames)):e)}});var Y=function(e,t,i){this.numerator=e?k(e).sort():[],this.denominator=t?k(t).sort():[],i?this.backupUnit=i:e&&e.length&&(this.backupUnit=e[0])};Y.prototype=Object.assign(new u,{type:"Unit",clone:function(){return new Y(k(this.numerator),k(this.denominator),this.backupUnit)},genCSS:function(e,t){var i=e&&e.strictUnits;1===this.numerator.length?t.add(this.numerator[0]):!i&&this.backupUnit?t.add(this.backupUnit):!i&&this.denominator.length&&t.add(this.denominator[0])},toString:function(){var e,t=this.numerator.join("*");for(e=0;e<this.denominator.length;e++)t+="/"+this.denominator[e];return t},compare:function(e){return this.is(e.toString())?0:void 0},is:function(e){return this.toString().toUpperCase()===e.toUpperCase()},isLength:function(){return RegExp("^(px|em|ex|ch|rem|in|cm|mm|pc|pt|ex|vw|vh|vmin|vmax)$","gi").test(this.toCSS())},isEmpty:function(){return 0===this.numerator.length&&0===this.denominator.length},isSingular:function(){return this.numerator.length<=1&&0===this.denominator.length},map:function(e){var t;for(t=0;t<this.numerator.length;t++)this.numerator[t]=e(this.numerator[t],!1);for(t=0;t<this.denominator.length;t++)this.denominator[t]=e(this.denominator[t],!0)},usedUnits:function(){var e,t,i,n={};for(i in t=function(t){return e.hasOwnProperty(t)&&!n[i]&&(n[i]=t),t},a)a.hasOwnProperty(i)&&(e=a[i],this.map(t));return n},cancel:function(){var e,t,i={};for(t=0;t<this.numerator.length;t++)i[e=this.numerator[t]]=(i[e]||0)+1;for(t=0;t<this.denominator.length;t++)i[e=this.denominator[t]]=(i[e]||0)-1;for(e in this.numerator=[],this.denominator=[],i)if(i.hasOwnProperty(e)){var n=i[e];if(n>0)for(t=0;t<n;t++)this.numerator.push(e);else if(n<0)for(t=0;t<-n;t++)this.denominator.push(e)}this.numerator.sort(),this.denominator.sort()}});var ee=function(e,t){if(this.value=parseFloat(e),isNaN(this.value))throw new Error("Dimension is not a number.");this.unit=t&&t instanceof Y?t:new Y(t?[t]:void 0),this.setParent(this.unit,this)};ee.prototype=Object.assign(new u,{type:"Dimension",accept:function(e){this.unit=e.visit(this.unit)},eval:function(e){return this},toColor:function(){return new c([this.value,this.value,this.value])},genCSS:function(e,t){if(e&&e.strictUnits&&!this.unit.isSingular())throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: "+this.unit.toString());var i=this.fround(e,this.value),n=String(i);if(0!==i&&i<1e-6&&i>-1e-6&&(n=i.toFixed(20).replace(/0+$/,"")),e&&e.compress){if(0===i&&this.unit.isLength())return void t.add(n);i>0&&i<1&&(n=n.substr(1))}t.add(n),this.unit.genCSS(e,t)},operate:function(e,t,i){var n=this._operate(e,t,this.value,i.value),r=this.unit.clone();if("+"===t||"-"===t)if(0===r.numerator.length&&0===r.denominator.length)r=i.unit.clone(),this.unit.backupUnit&&(r.backupUnit=this.unit.backupUnit);else if(0===i.unit.numerator.length&&0===r.denominator.length);else{if(i=i.convertTo(this.unit.usedUnits()),e.strictUnits&&i.unit.toString()!==r.toString())throw new Error("Incompatible units. Change the units or use the unit function. Bad units: '"+r.toString()+"' and '"+i.unit.toString()+"'.");n=this._operate(e,t,this.value,i.value)}else"*"===t?(r.numerator=r.numerator.concat(i.unit.numerator).sort(),r.denominator=r.denominator.concat(i.unit.denominator).sort(),r.cancel()):"/"===t&&(r.numerator=r.numerator.concat(i.unit.denominator).sort(),r.denominator=r.denominator.concat(i.unit.numerator).sort(),r.cancel());return new ee(n,r)},compare:function(e){var t,i;if(e instanceof ee){if(this.unit.isEmpty()||e.unit.isEmpty())t=this,i=e;else if(t=this.unify(),i=e.unify(),0!==t.unit.compare(i.unit))return;return u.numericCompare(t.value,i.value)}},unify:function(){return this.convertTo({length:"px",duration:"s",angle:"rad"})},convertTo:function(e){var t,i,n,r,s,o=this.value,l=this.unit.clone(),u={};if("string"==typeof e){for(t in a)a[t].hasOwnProperty(e)&&((u={})[t]=e);e=u}for(i in s=function(e,t){return n.hasOwnProperty(e)?(t?o/=n[e]/n[r]:o*=n[e]/n[r],r):e},e)e.hasOwnProperty(i)&&(r=e[i],n=a[i],l.map(s));return l.cancel(),new ee(o,l)}});var te=g,ie=function(e,t,i){this.op=e.trim(),this.operands=t,this.isSpaced=i};ie.prototype=Object.assign(new u,{type:"Operation",accept:function(e){this.operands=e.visitArray(this.operands)},eval:function(e){var t,i=this.operands[0].eval(e),n=this.operands[1].eval(e);if(e.isMathOn(this.op)){if(t="./"===this.op?"/":this.op,i instanceof ee&&n instanceof c&&(i=i.toColor()),n instanceof ee&&i instanceof c&&(n=n.toColor()),!i.operate||!n.operate){if((i instanceof ie||n instanceof ie)&&"/"===i.op&&e.math===te.PARENS_DIVISION)return new ie(this.op,[i,n],this.isSpaced);throw{type:"Operation",message:"Operation on an invalid type"}}return i.operate(e,t,n)}return new ie(this.op,[i,n],this.isSpaced)},genCSS:function(e,t){this.operands[0].genCSS(e,t),this.isSpaced&&t.add(" "),t.add(this.op),this.isSpaced&&t.add(" "),this.operands[1].genCSS(e,t)}});var ne=function(e,t){if(this.value=e,this.noSpacing=t,!e)throw new Error("Expression requires an array parameter")};ne.prototype=Object.assign(new u,{type:"Expression",accept:function(e){this.value=e.visitArray(this.value)},eval:function(e){var t,i=e.isMathOn(),n=this.parens,r=!1;return n&&e.inParenthesis(),this.value.length>1?t=new ne(this.value.map((function(t){return t.eval?t.eval(e):t})),this.noSpacing):1===this.value.length?(!this.value[0].parens||this.value[0].parensInOp||e.inCalc||(r=!0),t=this.value[0].eval(e)):t=this,n&&e.outOfParenthesis(),!this.parens||!this.parensInOp||i||r||t instanceof ee||(t=new p(t)),t},genCSS:function(e,t){for(var i=0;i<this.value.length;i++)this.value[i].genCSS(e,t),!this.noSpacing&&i+1<this.value.length&&t.add(" ")},throwAwayComments:function(){this.value=this.value.filter((function(e){return!(e instanceof U)}))}});var re=function(){function e(e,t,i,n){this.name=e.toLowerCase(),this.index=i,this.context=t,this.currentFileInfo=n,this.func=t.frames[0].functionRegistry.get(this.name)}return e.prototype.isValid=function(){return Boolean(this.func)},e.prototype.call=function(e){var t=this;Array.isArray(e)||(e=[e]);var i=this.func.evalArgs;!1!==i&&(e=e.map((function(e){return e.eval(t.context)})));var n=function(e){return!("Comment"===e.type)};return e=e.filter(n).map((function(e){if("Expression"===e.type){var t=e.value.filter(n);return 1===t.length?e.parens&&"/"===t[0].op?e:t[0]:new ne(t)}return e})),!1===i?this.func.apply(this,function(e,t,i){if(i||2===arguments.length)for(var n,r=0,s=t.length;r<s;r++)!n&&r in t||(n||(n=Array.prototype.slice.call(t,0,r)),n[r]=t[r]);return e.concat(n||t)}([this.context],e)):this.func.apply(this,e)},e}(),se=function(e,t,i,n){this.name=e,this.args=t,this.calc="calc"===e,this._index=i,this._fileInfo=n};se.prototype=Object.assign(new u,{type:"Call",accept:function(e){this.args&&(this.args=e.visitArray(this.args))},eval:function(e){var t=this,i=e.mathOn;e.mathOn=!this.calc,(this.calc||e.inCalc)&&e.enterCalc();var n,r=function(){(t.calc||e.inCalc)&&e.exitCalc(),e.mathOn=i},s=new re(this.name,e,this.getIndex(),this.fileInfo());if(s.isValid())try{n=s.call(this.args),r()}catch(e){if(e.hasOwnProperty("line")&&e.hasOwnProperty("column"))throw e;throw{type:e.type||"Runtime",message:"Error evaluating function `"+this.name+"`"+(e.message?": "+e.message:""),index:this.getIndex(),filename:this.fileInfo().filename,line:e.lineNumber,column:e.columnNumber}}if(null!=n)return n instanceof u||(n=new j(n&&!0!==n?n.toString():null)),n._index=this._index,n._fileInfo=this._fileInfo,n;var o=this.args.map((function(t){return t.eval(e)}));return r(),new se(this.name,o,this.getIndex(),this.fileInfo())},genCSS:function(e,t){t.add(this.name+"(",this.fileInfo(),this.getIndex());for(var i=0;i<this.args.length;i++)this.args[i].genCSS(e,t),i+1<this.args.length&&t.add(", ");t.add(")")}});var oe=function(e,t,i){this.name=e,this._index=t,this._fileInfo=i};oe.prototype=Object.assign(new u,{type:"Variable",eval:function(e){var t,i=this.name;if(0===i.indexOf("@@")&&(i="@"+new oe(i.slice(1),this.getIndex(),this.fileInfo()).eval(e).value),this.evaluating)throw{type:"Name",message:"Recursive variable definition for "+i,filename:this.fileInfo().filename,index:this.getIndex()};if(this.evaluating=!0,t=this.find(e.frames,(function(t){var n=t.variable(i);if(n){if(n.important)e.importantScope[e.importantScope.length-1].important=n.important;return e.inCalc?new se("_SELF",[n.value]).eval(e):n.value.eval(e)}})))return this.evaluating=!1,t;throw{type:"Name",message:"variable "+i+" is undefined",filename:this.fileInfo().filename,index:this.getIndex()}},find:function(e,t){for(var i=0,n=void 0;i<e.length;i++)if(n=t.call(e,e[i]))return n;return null}});var ae=function(e,t,i){this.name=e,this._index=t,this._fileInfo=i};ae.prototype=Object.assign(new u,{type:"Property",eval:function(e){var t,i=this.name,n=e.pluginManager.less.visitors.ToCSSVisitor.prototype._mergeRules;if(this.evaluating)throw{type:"Name",message:"Recursive property reference for "+i,filename:this.fileInfo().filename,index:this.getIndex()};if(this.evaluating=!0,t=this.find(e.frames,(function(t){var r,s=t.property(i);if(s){for(var o=0;o<s.length;o++)r=s[o],s[o]=new D(r.name,r.value,r.important,r.merge,r.index,r.currentFileInfo,r.inline,r.variable);if(n(s),(r=s[s.length-1]).important)e.importantScope[e.importantScope.length-1].important=r.important;return r=r.value.eval(e)}})))return this.evaluating=!1,t;throw{type:"Name",message:"Property '"+i+"' is undefined",filename:this.currentFileInfo.filename,index:this.index}},find:function(e,t){for(var i=0,n=void 0;i<e.length;i++)if(n=t.call(e,e[i]))return n;return null}});var le=function(e,t,i){this.key=e,this.op=t,this.value=i};le.prototype=Object.assign(new u,{type:"Attribute",eval:function(e){return new le(this.key.eval?this.key.eval(e):this.key,this.op,this.value&&this.value.eval?this.value.eval(e):this.value)},genCSS:function(e,t){t.add(this.toCSS(e))},toCSS:function(e){var t=this.key.toCSS?this.key.toCSS(e):this.key;return this.op&&(t+=this.op,t+=this.value.toCSS?this.value.toCSS(e):this.value),"["+t+"]"}});var ue=function(e,t,i,n,r){this.escaped=null==i||i,this.value=t||"",this.quote=e.charAt(0),this._index=n,this._fileInfo=r,this.variableRegex=/@\{([\w-]+)\}/g,this.propRegex=/\$\{([\w-]+)\}/g,this.allowRoot=i};ue.prototype=Object.assign(new u,{type:"Quoted",genCSS:function(e,t){this.escaped||t.add(this.quote,this.fileInfo(),this.getIndex()),t.add(this.value),this.escaped||t.add(this.quote)},containsVariables:function(){return this.value.match(this.variableRegex)},eval:function(e){var t=this,i=this.value;function n(e,t,i){var n=e;do{e=n.toString(),n=e.replace(t,i)}while(e!==n);return n}return i=n(i,this.variableRegex,(function(i,n){var r=new oe("@"+n,t.getIndex(),t.fileInfo()).eval(e,!0);return r instanceof ue?r.value:r.toCSS()})),i=n(i,this.propRegex,(function(i,n){var r=new ae("$"+n,t.getIndex(),t.fileInfo()).eval(e,!0);return r instanceof ue?r.value:r.toCSS()})),new ue(this.quote+i+this.quote,i,this.escaped,this.getIndex(),this.fileInfo())},compare:function(e){return"Quoted"!==e.type||this.escaped||e.escaped?e.toCSS&&this.toCSS()===e.toCSS()?0:void 0:u.numericCompare(this.value,e.value)}});var ce=function(e,t,i,n){this.value=e,this._index=t,this._fileInfo=i,this.isEvald=n};ce.prototype=Object.assign(new u,{type:"Url",accept:function(e){this.value=e.visit(this.value)},genCSS:function(e,t){t.add("url("),this.value.genCSS(e,t),t.add(")")},eval:function(e){var t,i=this.value.eval(e);if(!this.isEvald&&("string"==typeof(t=this.fileInfo()&&this.fileInfo().rootpath)&&"string"==typeof i.value&&e.pathRequiresRewrite(i.value)?(i.quote||(t=t.replace(/[\(\)'"\s]/g,(function(e){return"\\"+e}))),i.value=e.rewritePath(i.value,t)):i.value=e.normalizePath(i.value),e.urlArgs&&!i.value.match(/^\s*data:/))){var n=(-1===i.value.indexOf("?")?"?":"&")+e.urlArgs;-1!==i.value.indexOf("#")?i.value=i.value.replace("#",n+"#"):i.value+=n}return new ce(i,this.getIndex(),this.fileInfo(),!0)}});var he=function(e,t,i,n,r){this._index=i,this._fileInfo=n;var s=new F([],null,null,this._index,this._fileInfo).createEmptySelectors();this.features=new $(t),this.rules=[new K(s,e)],this.rules[0].allowImports=!0,this.copyVisibilityInfo(r),this.allowRoot=!0,this.setParent(s,this),this.setParent(this.features,this),this.setParent(this.rules,this)};he.prototype=Object.assign(new Z,{type:"Media",isRulesetLike:function(){return!0},accept:function(e){this.features&&(this.features=e.visit(this.features)),this.rules&&(this.rules=e.visitArray(this.rules))},genCSS:function(e,t){t.add("@media ",this._fileInfo,this._index),this.features.genCSS(e,t),this.outputRuleset(e,t,this.rules)},eval:function(e){e.mediaBlocks||(e.mediaBlocks=[],e.mediaPath=[]);var t=new he(null,[],this._index,this._fileInfo,this.visibilityInfo());return this.debugInfo&&(this.rules[0].debugInfo=this.debugInfo,t.debugInfo=this.debugInfo),t.features=this.features.eval(e),e.mediaPath.push(t),e.mediaBlocks.push(t),this.rules[0].functionRegistry=e.frames[0].functionRegistry.inherit(),e.frames.unshift(this.rules[0]),t.rules=[this.rules[0].eval(e)],e.frames.shift(),e.mediaPath.pop(),0===e.mediaPath.length?t.evalTop(e):t.evalNested(e)},evalTop:function(e){var t=this;if(e.mediaBlocks.length>1){var i=new F([],null,null,this.getIndex(),this.fileInfo()).createEmptySelectors();(t=new K(i,e.mediaBlocks)).multiMedia=!0,t.copyVisibilityInfo(this.visibilityInfo()),this.setParent(t,this)}return delete e.mediaBlocks,delete e.mediaPath,t},evalNested:function(e){var t,i,n=e.mediaPath.concat([this]);for(t=0;t<n.length;t++)i=n[t].features instanceof $?n[t].features.value:n[t].features,n[t]=Array.isArray(i)?i:[i];return this.features=new $(this.permute(n).map((function(e){for(e=e.map((function(e){return e.toCSS?e:new j(e)})),t=e.length-1;t>0;t--)e.splice(t,0,new j("and"));return new ne(e)}))),this.setParent(this.features,this),new K([],[])},permute:function(e){if(0===e.length)return[];if(1===e.length)return e[0];for(var t=[],i=this.permute(e.slice(1)),n=0;n<i.length;n++)for(var r=0;r<e[0].length;r++)t.push([e[0][r]].concat(i[n]));return t},bubbleSelectors:function(e){e&&(this.rules=[new K(k(e),