@oddbird/css-anchor-positioning/dist/css-anchor-positioning-fn.umd.cjs

Polyfill for the proposed CSS anchor positioning spec

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e}function Qn(t,e){let n=t.charCodeAt(e);if((n===43||n===45)&&(n=t.charCodeAt(e+=1)),at(n)&&(e=tn(t,e+1),n=t.charCodeAt(e)),n===46&&at(t.charCodeAt(e+1))&&(e+=2,e=tn(t,e)),Kn(t,e,101)){let r=0;n=t.charCodeAt(e+1),(n===45||n===43)&&(r=1,n=t.charCodeAt(e+2)),at(n)&&(e=tn(t,e+1+r+1))}return e}function en(t,e){for(;e<t.length;e++){const n=t.charCodeAt(e);if(n===41){e++;break}yt(n,Qt(t,e+1))&&(e=Yt(t,e))}return e}function Yn(t){if(t.length===1&&!Kt(t.charCodeAt(0)))return t[0];let e=parseInt(t,16);return(e===0||e>=55296&&e<=57343||e>1114111)&&(e=65533),String.fromCodePoint(e)}const Xn=["EOF-token","ident-token","function-token","at-keyword-token","hash-token","string-token","bad-string-token","url-token","bad-url-token","delim-token","number-token","percentage-token","dimension-token","whitespace-token","CDO-token","CDC-token","colon-token","semicolon-token","comma-token","[-token","]-token","(-token",")-token","{-token","}-token","comment-token"],Vo=16*1024;function ve(t=null,e){return t===null||t.length<e?new Uint32Array(Math.max(e+1024,Vo)):t}const Jn=10,Go=12,Zn=13;function tr(t){const e=t.source,n=e.length,r=e.length>0?Vn(e.charCodeAt(0)):0,s=ve(t.lines,n),o=ve(t.columns,n);let a=t.startLine,c=t.startColumn;for(let u=r;u<n;u++){const i=e.charCodeAt(u);s[u]=a,o[u]=c++,(i===Jn||i===Zn||i===Go)&&(i===Zn&&u+1<n&&e.charCodeAt(u+1)===Jn&&(u++,s[u]=a,o[u]=c),a++,c=1)}s[n]=a,o[n]=c,t.lines=s,t.columns=o,t.computed=!0}class qo{constructor(e,n,r,s){this.setSource(e,n,r,s),this.lines=null,this.columns=null}setSource(e="",n=0,r=1,s=1){this.source=e,this.startOffset=n,this.startLine=r,this.startColumn=s,this.computed=!1}getLocation(e,n){return this.computed||tr(this),{source:n,offset:this.startOffset+e,line:this.lines[e],column:this.columns[e]}}getLocationRange(e,n,r){return this.computed||tr(this),{source:r,start:{offset:this.startOffset+e,line:this.lines[e],column:this.columns[e]},end:{offset:this.startOffset+n,line:this.lines[n],column:this.columns[n]}}}}const bt=16777215,xt=24,Dt=new Uint8Array(32);Dt[T]=S,Dt[_]=S,Dt[Gt]=ue,Dt[gt]=qt;function er(t){return Dt[t]!==0}class Ko{constructor(e,n){this.setSource(e,n)}reset(){this.eof=!1,this.tokenIndex=-1,this.tokenType=0,this.tokenStart=this.firstCharOffset,this.tokenEnd=this.firstCharOffset}setSource(e="",n=()=>{}){e=String(e||"");const r=e.length,s=ve(this.offsetAndType,e.length+1),o=ve(this.balance,e.length+1);let a=0,c=-1,u=0,i=e.length;this.offsetAndType=null,this.balance=null,o.fill(0),n(e,(l,h,f)=>{const p=a++;if(s[p]=l<<xt|f,c===-1&&(c=h),o[p]=i,l===u){const g=o[i];o[i]=p,i=g,u=Dt[s[g]>>xt]}else er(l)&&(i=p,u=Dt[l])}),s[a]=Lt<<xt|r,o[a]=a;for(let l=0;l<a;l++){const h=o[l];if(h<=l){const f=o[h];f!==l&&(o[l]=f)}else h>a&&(o[l]=a)}this.source=e,this.firstCharOffset=c===-1?0:c,this.tokenCount=a,this.offsetAndType=s,this.balance=o,this.reset(),this.next()}lookupType(e){return e+=this.tokenIndex,e<this.tokenCount?this.offsetAndType[e]>>xt:Lt}lookupTypeNonSC(e){for(let 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n=this.tokenIndex+e;n<this.tokenCount?(this.tokenIndex=n,this.tokenStart=this.offsetAndType[n-1]&bt,n=this.offsetAndType[n],this.tokenType=n>>xt,this.tokenEnd=n&bt):(this.tokenIndex=this.tokenCount,this.next())}next(){let e=this.tokenIndex+1;e<this.tokenCount?(this.tokenIndex=e,this.tokenStart=this.tokenEnd,e=this.offsetAndType[e],this.tokenType=e>>xt,this.tokenEnd=e&bt):(this.eof=!0,this.tokenIndex=this.tokenCount,this.tokenType=Lt,this.tokenStart=this.tokenEnd=this.source.length)}skipSC(){for(;this.tokenType===B||this.tokenType===X;)this.next()}skipUntilBalanced(e,n){let r=e,s=0,o=0;t:for(;r<this.tokenCount;r++){if(s=this.balance[r],s<e)break t;switch(o=r>0?this.offsetAndType[r-1]&bt:this.firstCharOffset,n(this.source.charCodeAt(o))){case 1:break t;case 2:r++;break t;default:er(this.offsetAndType[r]>>xt)&&(r=s)}}this.skip(r-this.tokenIndex)}forEachToken(e){for(let n=0,r=this.firstCharOffset;n<this.tokenCount;n++){const 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Ce:if(i=Te(t,i),n(i)===41||i>=t.length){i<t.length&&i++;return}i=en(t,i),l=pt;return;case 34:case 39:case 40:case qn:i=en(t,i),l=pt;return;case 92:if(yt(h,n(i+1))){i=Yt(t,i)-1;break}i=en(t,i),l=pt;return}}}t=String(t||"");const c=t.length;let u=Vn(n(0)),i=u,l;for(;i<c;){const h=t.charCodeAt(i);switch(Je(h)){case Ce:l=B,i=Te(t,i+1);break;case 34:o();break;case 35:Hn(n(i+1))||yt(n(i+1),n(i+2))?(l=N,i=Ae(t,i+1)):(l=P,i++);break;case 39:o();break;case 40:l=_,i++;break;case 41:l=S,i++;break;case 43:Qe(h,n(i+1),n(i+2))?r():(l=P,i++);break;case 44:l=dt,i++;break;case 45:Qe(h,n(i+1),n(i+2))?r():n(i+1)===45&&n(i+2)===62?(l=ot,i=i+3):Ke(h,n(i+1),n(i+2))?s():(l=P,i++);break;case 46:Qe(h,n(i+1),n(i+2))?r():(l=P,i++);break;case 47:n(i+1)===42?(l=X,i=t.indexOf("*/",i+2),i=i===-1?t.length:i+2):(l=P,i++);break;case 58:l=Y,i++;break;case 59:l=et,i++;break;case 60:n(i+1)===33&&n(i+2)===45&&n(i+3)===45?(l=ye,i=i+4):(l=P,i++);break;case 64:Ke(n(i+1),n(i+2),n(i+3))?(l=V,i=Ae(t,i+1)):(l=P,i++);break;case 91:l=Gt,i++;break;case 92:yt(h,n(i+1))?s():(l=P,i++);break;case 93:l=ue,i++;break;case 123:l=gt,i++;break;case 125:l=qt,i++;break;case Gn:r();break;case Xe:s();break;default:l=P,i++}e(l,u,u=i)}}const Ct=43,lt=45,Ee=110,Ft=!0,Qo=!1;function $e(t,e){let n=this.tokenStart+t;const r=this.charCodeAt(n);for((r===Ct||r===lt)&&(e&&this.error("Number sign is not allowed"),n++);n<this.tokenEnd;n++)at(this.charCodeAt(n))||this.error("Integer is expected",n)}function Xt(t){return $e.call(this,0,t)}function Pt(t,e){if(!this.cmpChar(this.tokenStart+t,e)){let n="";switch(e){case Ee:n="N is expected";break;case lt:n="HyphenMinus is expected";break}this.error(n,this.tokenStart+t)}}function nn(){let t=0,e=0,n=this.tokenType;for(;n===B||n===X;)n=this.lookupType(++t);if(n!==x)if(this.isDelim(Ct,t)||this.isDelim(lt,t)){e=this.isDelim(Ct,t)?Ct:lt;do n=this.lookupType(++t);while(n===B||n===X);n!==x&&(this.skip(t),Xt.call(this,Ft))}else return null;return t>0&&this.skip(t),e===0&&(n=this.charCodeAt(this.tokenStart),n!==Ct&&n!==lt&&this.error("Number sign is expected")),Xt.call(this,e!==0),e===lt?"-"+this.consume(x):this.consume(x)}const Yo="AnPlusB",Xo={a:[String,null],b:[String,null]};function rr(){const t=this.tokenStart;let e=null,n=null;if(this.tokenType===x)Xt.call(this,Qo),n=this.consume(x);else if(this.tokenType===d&&this.cmpChar(this.tokenStart,lt))switch(e="-1",Pt.call(this,1,Ee),this.tokenEnd-this.tokenStart){case 2:this.next(),n=nn.call(this);break;case 3:Pt.call(this,2,lt),this.next(),this.skipSC(),Xt.call(this,Ft),n="-"+this.consume(x);break;default:Pt.call(this,2,lt),$e.call(this,3,Ft),this.next(),n=this.substrToCursor(t+2)}else if(this.tokenType===d||this.isDelim(Ct)&&this.lookupType(1)===d){let r=0;switch(e="1",this.isDelim(Ct)&&(r=1,this.next()),Pt.call(this,0,Ee),this.tokenEnd-this.tokenStart){case 1:this.next(),n=nn.call(this);break;case 2:Pt.call(this,1,lt),this.next(),this.skipSC(),Xt.call(this,Ft),n="-"+this.consume(x);break;default:Pt.call(this,1,lt),$e.call(this,2,Ft),this.next(),n=this.substrToCursor(t+r+1)}}else if(this.tokenType===E){const r=this.charCodeAt(this.tokenStart),s=r===Ct||r===lt;let o=this.tokenStart+s;for(;o<this.tokenEnd&&at(this.charCodeAt(o));o++);o===this.tokenStart+s&&this.error("Integer is expected",this.tokenStart+s),Pt.call(this,o-this.tokenStart,Ee),e=this.substring(t,o),o+1===this.tokenEnd?(this.next(),n=nn.call(this)):(Pt.call(this,o-this.tokenStart+1,lt),o+2===this.tokenEnd?(this.next(),this.skipSC(),Xt.call(this,Ft),n="-"+this.consume(x)):($e.call(this,o-this.tokenStart+2,Ft),this.next(),n=this.substrToCursor(o+1)))}else this.error();return e!==null&&e.charCodeAt(0)===Ct&&(e=e.substr(1)),n!==null&&n.charCodeAt(0)===Ct&&(n=n.substr(1)),{type:"AnPlusB",loc:this.getLocation(t,this.tokenStart),a:e,b:n}}function sr(t){if(t.a){const e=t.a==="+1"&&"n"||t.a==="1"&&"n"||t.a==="-1"&&"-n"||t.a+"n";if(t.b){const n=t.b[0]==="-"||t.b[0]==="+"?t.b:"+"+t.b;this.tokenize(e+n)}else this.tokenize(e)}else this.tokenize(t.b)}const Jo=Object.freeze(Object.defineProperty({__proto__:null,generate:sr,name:Yo,parse:rr,structure:Xo},Symbol.toStringTag,{value:"Module"}));function ir(){return this.Raw(this.consumeUntilLeftCurlyBracketOrSemicolon,!0)}function Zo(){for(let t=1,e;e=this.lookupType(t);t++){if(e===qt)return!0;if(e===gt||e===V)return!1}return!1}const ta="Atrule",ea="atrule",na={name:String,prelude:["AtrulePrelude","Raw",null],block:["Block",null]};function or(t=!1){const e=this.tokenStart;let n,r,s=null,o=null;switch(this.eat(V),n=this.substrToCursor(e+1),r=n.toLowerCase(),this.skipSC(),this.eof===!1&&this.tokenType!==gt&&this.tokenType!==et&&(this.parseAtrulePrelude?s=this.parseWithFallback(this.AtrulePrelude.bind(this,n,t),ir):s=ir.call(this,this.tokenIndex),this.skipSC()),this.tokenType){case et:this.next();break;case gt:hasOwnProperty.call(this.atrule,r)&&typeof this.atrule[r].block=="function"?o=this.atrule[r].block.call(this,t):o=this.Block(Zo.call(this));break}return{type:"Atrule",loc:this.getLocation(e,this.tokenStart),name:n,prelude:s,block:o}}function ar(t){this.token(V,"@"+t.name),t.prelude!==null&&this.node(t.prelude),t.block?this.node(t.block):this.token(et,";")}const ra=Object.freeze(Object.defineProperty({__proto__:null,generate:ar,name:ta,parse:or,structure:na,walkContext:ea},Symbol.toStringTag,{value:"Module"})),sa="AtrulePrelude",ia="atrulePrelude",oa={children:[[]]};function lr(t){let e=null;return t!==null&&(t=t.toLowerCase()),this.skipSC(),hasOwnProperty.call(this.atrule,t)&&typeof this.atrule[t].prelude=="function"?e=this.atrule[t].prelude.call(this):e=this.readSequence(this.scope.AtrulePrelude),this.skipSC(),this.eof!==!0&&this.tokenType!==gt&&this.tokenType!==et&&this.error("Semicolon or block is expected"),{type:"AtrulePrelude",loc:this.getLocationFromList(e),children:e}}function cr(t){this.children(t)}const aa=Object.freeze(Object.defineProperty({__proto__:null,generate:cr,name:sa,parse:lr,structure:oa,walkContext:ia},Symbol.toStringTag,{value:"Module"})),la=36,ur=42,Le=61,ca=94,rn=124,ua=126;function ha(){this.eof&&this.error("Unexpected end of input");const t=this.tokenStart;let e=!1;return this.isDelim(ur)?(e=!0,this.next()):this.isDelim(rn)||this.eat(d),this.isDelim(rn)?this.charCodeAt(this.tokenStart+1)!==Le?(this.next(),this.eat(d)):e&&this.error("Identifier is expected",this.tokenEnd):e&&this.error("Vertical line is expected"),{type:"Identifier",loc:this.getLocation(t,this.tokenStart),name:this.substrToCursor(t)}}function fa(){const t=this.tokenStart,e=this.charCodeAt(t);return e!==Le&&e!==ua&&e!==ca&&e!==la&&e!==ur&&e!==rn&&this.error("Attribute selector (=, ~=, ^=, $=, *=, |=) is expected"),this.next(),e!==Le&&(this.isDelim(Le)||this.error("Equal sign is expected"),this.next()),this.substrToCursor(t)}const pa="AttributeSelector",da={name:"Identifier",matcher:[String,null],value:["String","Identifier",null],flags:[String,null]};function hr(){const t=this.tokenStart;let e,n=null,r=null,s=null;return this.eat(Gt),this.skipSC(),e=ha.call(this),this.skipSC(),this.tokenType!==ue&&(this.tokenType!==d&&(n=fa.call(this),this.skipSC(),r=this.tokenType===Tt?this.String():this.Identifier(),this.skipSC()),this.tokenType===d&&(s=this.consume(d),this.skipSC())),this.eat(ue),{type:"AttributeSelector",loc:this.getLocation(t,this.tokenStart),name:e,matcher:n,value:r,flags:s}}function fr(t){this.token(P,"["),this.node(t.name),t.matcher!==null&&(this.tokenize(t.matcher),this.node(t.value)),t.flags!==null&&this.token(d,t.flags),this.token(P,"]")}const ga=Object.freeze(Object.defineProperty({__proto__:null,generate:fr,name:pa,parse:hr,structure:da},Symbol.toStringTag,{value:"Module"})),ma=38;function pr(){return this.Raw(null,!0)}function dr(){return this.parseWithFallback(this.Rule,pr)}function gr(){return this.Raw(this.consumeUntilSemicolonIncluded,!0)}function ka(){if(this.tokenType===et)return gr.call(this,this.tokenIndex);const t=this.parseWithFallback(this.Declaration,gr);return this.tokenType===et&&this.next(),t}const Sa="Block",ya="block",ba={children:[["Atrule","Rule","Declaration"]]};function mr(t){const e=t?ka:dr,n=this.tokenStart;let r=this.createList();this.eat(gt);t:for(;!this.eof;)switch(this.tokenType){case qt:break t;case B:case X:this.next();break;case V:r.push(this.parseWithFallback(this.Atrule.bind(this,t),pr));break;default:t&&this.isDelim(ma)?r.push(dr.call(this)):r.push(e.call(this))}return this.eof||this.eat(qt),{type:"Block",loc:this.getLocation(n,this.tokenStart),children:r}}function kr(t){this.token(gt,"{"),this.children(t,e=>{e.type==="Declaration"&&this.token(et,";")}),this.token(qt,"}")}const xa=Object.freeze(Object.defineProperty({__proto__:null,generate:kr,name:Sa,parse:mr,structure:ba,walkContext:ya},Symbol.toStringTag,{value:"Module"})),Ca="Brackets",wa={children:[[]]};function Sr(t,e){const n=this.tokenStart;let r=null;return this.eat(Gt),r=t.call(this,e),this.eof||this.eat(ue),{type:"Brackets",loc:this.getLocation(n,this.tokenStart),children:r}}function yr(t){this.token(P,"["),this.children(t),this.token(P,"]")}const Ta=Object.freeze(Object.defineProperty({__proto__:null,generate:yr,name:Ca,parse:Sr,structure:wa},Symbol.toStringTag,{value:"Module"})),Aa="CDC",va=[];function br(){const t=this.tokenStart;return this.eat(ot),{type:"CDC",loc:this.getLocation(t,this.tokenStart)}}function xr(){this.token(ot,"-->")}const Ea=Object.freeze(Object.defineProperty({__proto__:null,generate:xr,name:Aa,parse:br,structure:va},Symbol.toStringTag,{value:"Module"})),$a="CDO",La=[];function Cr(){const t=this.tokenStart;return this.eat(ye),{type:"CDO",loc:this.getLocation(t,this.tokenStart)}}function wr(){this.token(ye,"<!--")}const Pa=Object.freeze(Object.defineProperty({__proto__:null,generate:wr,name:$a,parse:Cr,structure:La},Symbol.toStringTag,{value:"Module"})),Oa=46,Ra="ClassSelector",Ia={name:String};function Tr(){return this.eatDelim(Oa),{type:"ClassSelector",loc:this.getLocation(this.tokenStart-1,this.tokenEnd),name:this.consume(d)}}function Ar(t){this.token(P,"."),this.token(d,t.name)}const _a=Object.freeze(Object.defineProperty({__proto__:null,generate:Ar,name:Ra,parse:Tr,structure:Ia},Symbol.toStringTag,{value:"Module"})),Na=43,vr=47,Da=62,Fa=126,Ma="Combinator",ja={name:String};function Er(){const t=this.tokenStart;let e;switch(this.tokenType){case B:e=" ";break;case P:switch(this.charCodeAt(this.tokenStart)){case Da:case Na:case Fa:this.next();break;case vr:this.next(),this.eatIdent("deep"),this.eatDelim(vr);break;default:this.error("Combinator is 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this.lookupTypeNonSC(1)===d&&Ga.has(this.lookupTypeNonSC(2))?this.Feature(t):this.FeatureRange(t)}const Qa={media:Or,container:Or,supports(){return this.SupportsDeclaration()}};function Rr(t="media"){const e=this.createList();t:for(;!this.eof;)switch(this.tokenType){case X:case B:this.next();continue;case d:e.push(this.Identifier());break;case _:{let n=this.parseWithFallback(()=>Qa[t].call(this,t),()=>null);n||(n=this.parseWithFallback(()=>{this.eat(_);const r=this.Condition(t);return this.eat(S),r},()=>this.GeneralEnclosed(t))),e.push(n);break}case T:{let n=this.parseWithFallback(()=>this.FeatureFunction(t),()=>null);n||(n=this.GeneralEnclosed(t)),e.push(n);break}default:break t}return e.isEmpty&&this.error("Condition is expected"),{type:"Condition",loc:this.getLocationFromList(e),kind:t,children:e}}function Ir(t){t.children.forEach(e=>{e.type==="Condition"?(this.token(_,"("),this.node(e),this.token(S,")")):this.node(e)})}const Ya=Object.freeze(Object.defineProperty({__proto__:null,generate:Ir,name:qa,parse:Rr,structure:Ka},Symbol.toStringTag,{value:"Module"})),_r=45;function Xa(t,e){return e=e||0,t.length-e>=2&&t.charCodeAt(e)===_r&&t.charCodeAt(e+1)===_r}const Nr=33,Ja=35,Za=36,tl=38,el=42,nl=43,Dr=47;function rl(){return this.Raw(this.consumeUntilExclamationMarkOrSemicolon,!0)}function sl(){return this.Raw(this.consumeUntilExclamationMarkOrSemicolon,!1)}function il(){const t=this.tokenIndex,e=this.Value();return e.type!=="Raw"&&this.eof===!1&&this.tokenType!==et&&this.isDelim(Nr)===!1&&this.isBalanceEdge(t)===!1&&this.error(),e}const ol="Declaration",al="declaration",ll={important:[Boolean,String],property:String,value:["Value","Raw"]};function Fr(){const t=this.tokenStart,e=this.tokenIndex,n=cl.call(this),r=Xa(n),s=r?this.parseCustomProperty:this.parseValue,o=r?sl:rl;let a=!1,c;this.skipSC(),this.eat(Y);const u=this.tokenIndex;if(r||this.skipSC(),s?c=this.parseWithFallback(il,o):c=o.call(this,this.tokenIndex),r&&c.type==="Value"&&c.children.isEmpty){for(let i=u-this.tokenIndex;i<=0;i++)if(this.lookupType(i)===B){c.children.appendData({type:"WhiteSpace",loc:null,value:" "});break}}return this.isDelim(Nr)&&(a=ul.call(this),this.skipSC()),this.eof===!1&&this.tokenType!==et&&this.isBalanceEdge(e)===!1&&this.error(),{type:"Declaration",loc:this.getLocation(t,this.tokenStart),important:a,property:n,value:c}}function Mr(t){this.token(d,t.property),this.token(Y,":"),this.node(t.value),t.important&&(this.token(P,"!"),this.token(d,t.important===!0?"important":t.important))}function cl(){const t=this.tokenStart;if(this.tokenType===P)switch(this.charCodeAt(this.tokenStart)){case el:case Za:case nl:case Ja:case tl:this.next();break;case Dr:this.next(),this.isDelim(Dr)&&this.next();break}return this.tokenType===N?this.eat(N):this.eat(d),this.substrToCursor(t)}function ul(){this.eat(P),this.skipSC();const t=this.consume(d);return t==="important"?!0:t}const hl=Object.freeze(Object.defineProperty({__proto__:null,generate:Mr,name:ol,parse:Fr,structure:ll,walkContext:al},Symbol.toStringTag,{value:"Module"})),fl=38;function sn(){return this.Raw(this.consumeUntilSemicolonIncluded,!0)}const pl="DeclarationList",dl={children:[["Declaration","Atrule","Rule"]]};function jr(){const t=this.createList();for(;!this.eof;)switch(this.tokenType){case B:case X:case et:this.next();break;case V:t.push(this.parseWithFallback(this.Atrule.bind(this,!0),sn));break;default:this.isDelim(fl)?t.push(this.parseWithFallback(this.Rule,sn)):t.push(this.parseWithFallback(this.Declaration,sn))}return{type:"DeclarationList",loc:this.getLocationFromList(t),children:t}}function Br(t){this.children(t,e=>{e.type==="Declaration"&&this.token(et,";")})}const gl=Object.freeze(Object.defineProperty({__proto__:null,generate:Br,name:pl,parse:jr,structure:dl},Symbol.toStringTag,{value:"Module"})),ml="Dimension",kl={value:String,unit:String};function Ur(){const t=this.tokenStart,e=this.consumeNumber(E);return{type:"Dimension",loc:this.getLocation(t,this.tokenStart),value:e,unit:this.substring(t+e.length,this.tokenStart)}}function Wr(t){this.token(E,t.value+t.unit)}const Sl=Object.freeze(Object.defineProperty({__proto__:null,generate:Wr,name:ml,parse:Ur,structure:kl},Symbol.toStringTag,{value:"Module"})),yl=47,bl="Feature",xl={kind:String,name:String,value:["Identifier","Number","Dimension","Ratio","Function",null]};function zr(t){const e=this.tokenStart;let n,r=null;if(this.eat(_),this.skipSC(),n=this.consume(d),this.skipSC(),this.tokenType!==S){switch(this.eat(Y),this.skipSC(),this.tokenType){case x:this.lookupNonWSType(1)===P?r=this.Ratio():r=this.Number();break;case E:r=this.Dimension();break;case d:r=this.Identifier();break;case T:r=this.parseWithFallback(()=>{const s=this.Function(this.readSequence,this.scope.Value);return this.skipSC(),this.isDelim(yl)&&this.error(),s},()=>this.Ratio());break;default:this.error("Number, dimension, ratio or identifier is expected")}this.skipSC()}return this.eof||this.eat(S),{type:"Feature",loc:this.getLocation(e,this.tokenStart),kind:t,name:n,value:r}}function Hr(t){this.token(_,"("),this.token(d,t.name),t.value!==null&&(this.token(Y,":"),this.node(t.value)),this.token(S,")")}const Cl=Object.freeze(Object.defineProperty({__proto__:null,generate:Hr,name:bl,parse:zr,structure:xl},Symbol.toStringTag,{value:"Module"})),wl="FeatureFunction",Tl={kind:String,feature:String,value:["Declaration","Selector"]};function Al(t,e){const r=(this.features[t]||{})[e];return typeof r!="function"&&this.error(`Unknown feature ${e}()`),r}function Vr(t="unknown"){const e=this.tokenStart,n=this.consumeFunctionName(),r=Al.call(this,t,n.toLowerCase());this.skipSC();const s=this.parseWithFallback(()=>{const o=this.tokenIndex,a=r.call(this);return this.eof===!1&&this.isBalanceEdge(o)===!1&&this.error(),a},()=>this.Raw(null,!1));return this.eof||this.eat(S),{type:"FeatureFunction",loc:this.getLocation(e,this.tokenStart),kind:t,feature:n,value:s}}function Gr(t){this.token(T,t.feature+"("),this.node(t.value),this.token(S,")")}const vl=Object.freeze(Object.defineProperty({__proto__:null,generate:Gr,name:wl,parse:Vr,structure:Tl},Symbol.toStringTag,{value:"Module"})),qr=47,El=60,Kr=61,$l=62,Ll="FeatureRange",Pl={kind:String,left:["Identifier","Number","Dimension","Ratio","Function"],leftComparison:String,middle:["Identifier","Number","Dimension","Ratio","Function"],rightComparison:[String,null],right:["Identifier","Number","Dimension","Ratio","Function",null]};function on(){switch(this.skipSC(),this.tokenType){case x:return this.isDelim(qr,this.lookupOffsetNonSC(1))?this.Ratio():this.Number();case E:return this.Dimension();case d:return this.Identifier();case T:return this.parseWithFallback(()=>{const t=this.Function(this.readSequence,this.scope.Value);return this.skipSC(),this.isDelim(qr)&&this.error(),t},()=>this.Ratio());default:this.error("Number, dimension, ratio or identifier is expected")}}function Qr(t){if(this.skipSC(),this.isDelim(El)||this.isDelim($l)){const e=this.source[this.tokenStart];return this.next(),this.isDelim(Kr)?(this.next(),e+"="):e}if(this.isDelim(Kr))return"=";this.error(`Expected ${t?'":", ':""}"<", ">", "=" or ")"`)}function Yr(t="unknown"){const e=this.tokenStart;this.skipSC(),this.eat(_);const n=on.call(this),r=Qr.call(this,n.type==="Identifier"),s=on.call(this);let o=null,a=null;return this.lookupNonWSType(0)!==S&&(o=Qr.call(this),a=on.call(this)),this.skipSC(),this.eat(S),{type:"FeatureRange",loc:this.getLocation(e,this.tokenStart),kind:t,left:n,leftComparison:r,middle:s,rightComparison:o,right:a}}function Xr(t){this.token(_,"("),this.node(t.left),this.tokenize(t.leftComparison),this.node(t.middle),t.right&&(this.tokenize(t.rightComparison),this.node(t.right)),this.token(S,")")}const Ol=Object.freeze(Object.defineProperty({__proto__:null,generate:Xr,name:Ll,parse:Yr,structure:Pl},Symbol.toStringTag,{value:"Module"})),Rl="Function",Il="function",_l={name:String,children:[[]]};function Jr(t,e){const n=this.tokenStart,r=this.consumeFunctionName(),s=r.toLowerCase();let o;return o=e.hasOwnProperty(s)?e[s].call(this,e):t.call(this,e),this.eof||this.eat(S),{type:"Function",loc:this.getLocation(n,this.tokenStart),name:r,children:o}}function Zr(t){this.token(T,t.name+"("),this.children(t),this.token(S,")")}const Nl=Object.freeze(Object.defineProperty({__proto__:null,generate:Zr,name:Rl,parse:Jr,structure:_l,walkContext:Il},Symbol.toStringTag,{value:"Module"})),Dl="GeneralEnclosed",Fl={kind:String,function:[String,null],children:[[]]};function ts(t){const e=this.tokenStart;let n=null;this.tokenType===T?n=this.consumeFunctionName():this.eat(_);const r=this.parseWithFallback(()=>{const s=this.tokenIndex,o=this.readSequence(this.scope.Value);return this.eof===!1&&this.isBalanceEdge(s)===!1&&this.error(),o},()=>this.createSingleNodeList(this.Raw(null,!1)));return this.eof||this.eat(S),{type:"GeneralEnclosed",loc:this.getLocation(e,this.tokenStart),kind:t,function:n,children:r}}function es(t){t.function?this.token(T,t.function+"("):this.token(_,"("),this.children(t),this.token(S,")")}const Ml=Object.freeze(Object.defineProperty({__proto__:null,generate:es,name:Dl,parse:ts,structure:Fl},Symbol.toStringTag,{value:"Module"})),jl="XXX",Bl="Hash",Ul={value:String};function ns(){const t=this.tokenStart;return this.eat(N),{type:"Hash",loc:this.getLocation(t,this.tokenStart),value:this.substrToCursor(t+1)}}function rs(t){this.token(N,"#"+t.value)}const Wl=Object.freeze(Object.defineProperty({__proto__:null,generate:rs,name:Bl,parse:ns,structure:Ul,xxx:jl},Symbol.toStringTag,{value:"Module"})),zl="Identifier",Hl={name:String};function ss(){return{type:"Identifier",loc:this.getLocation(this.tokenStart,this.tokenEnd),name:this.consume(d)}}function is(t){this.token(d,t.name)}const Vl=Object.freeze(Object.defineProperty({__proto__:null,generate:is,name:zl,parse:ss,structure:Hl},Symbol.toStringTag,{value:"Module"})),Gl="IdSelector",ql={name:String};function os(){const t=this.tokenStart;return this.eat(N),{type:"IdSelector",loc:this.getLocation(t,this.tokenStart),name:this.substrToCursor(t+1)}}function as(t){this.token(P,"#"+t.name)}const Kl=Object.freeze(Object.defineProperty({__proto__:null,generate:as,name:Gl,parse:os,structure:ql},Symbol.toStringTag,{value:"Module"})),Ql=46,Yl="Layer",Xl={name:String};function ls(){let t=this.tokenStart,e=this.consume(d);for(;this.isDelim(Ql);)this.eat(P),e+="."+this.consume(d);return{type:"Layer",loc:this.getLocation(t,this.tokenStart),name:e}}function cs(t){this.tokenize(t.name)}const Jl=Object.freeze(Object.defineProperty({__proto__:null,generate:cs,name:Yl,parse:ls,structure:Xl},Symbol.toStringTag,{value:"Module"})),Zl="LayerList",tc={children:[["Layer"]]};function us(){const t=this.createList();for(this.skipSC();!this.eof&&(t.push(this.Layer()),this.lookupTypeNonSC(0)===dt);)this.skipSC(),this.next(),this.skipSC();return{type:"LayerList",loc:this.getLocationFromList(t),children:t}}function hs(t){this.children(t,()=>this.token(dt,","))}const ec=Object.freeze(Object.defineProperty({__proto__:null,generate:hs,name:Zl,parse:us,structure:tc},Symbol.toStringTag,{value:"Module"})),nc="MediaQuery",rc={modifier:[String,null],mediaType:[String,null],condition:["Condition",null]};function fs(){const t=this.tokenStart;let e=null,n=null,r=null;if(this.skipSC(),this.tokenType===d&&this.lookupTypeNonSC(1)!==_){const s=this.consume(d),o=s.toLowerCase();switch(o==="not"||o==="only"?(this.skipSC(),e=o,n=this.consume(d)):n=s,this.lookupTypeNonSC(0)){case d:{this.skipSC(),this.eatIdent("and"),r=this.Condition("media");break}case gt:case et:case dt:case Lt:break;default:this.error("Identifier or parenthesis is expected")}}else switch(this.tokenType){case d:case _:case T:{r=this.Condition("media");break}case gt:case et:case Lt:break;default:this.error("Identifier or parenthesis is expected")}return{type:"MediaQuery",loc:this.getLocation(t,this.tokenStart),modifier:e,mediaType:n,condition:r}}function ps(t){t.mediaType?(t.modifier&&this.token(d,t.modifier),this.token(d,t.mediaType),t.condition&&(this.token(d,"and"),this.node(t.condition))):t.condition&&this.node(t.condition)}const sc=Object.freeze(Object.defineProperty({__proto__:null,generate:ps,name:nc,parse:fs,structure:rc},Symbol.toStringTag,{value:"Module"})),ic="MediaQueryList",oc={children:[["MediaQuery"]]};function ds(){const t=this.createList();for(this.skipSC();!this.eof&&(t.push(this.MediaQuery()),this.tokenType===dt);)this.next();return{type:"MediaQueryList",loc:this.getLocationFromList(t),children:t}}function gs(t){this.children(t,()=>this.token(dt,","))}const ac=Object.freeze(Object.defineProperty({__proto__:null,generate:gs,name:ic,parse:ds,structure:oc},Symbol.toStringTag,{value:"Module"})),lc=38,cc="NestingSelector",uc={};function ms(){const t=this.tokenStart;return this.eatDelim(lc),{type:"NestingSelector",loc:this.getLocation(t,this.tokenStart)}}function ks(){this.token(P,"&")}const hc=Object.freeze(Object.defineProperty({__proto__:null,generate:ks,name:cc,parse:ms,structure:uc},Symbol.toStringTag,{value:"Module"})),fc="Nth",pc={nth:["AnPlusB","Identifier"],selector:["SelectorList",null]};function Ss(){this.skipSC();const t=this.tokenStart;let e=t,n=null,r;return this.lookupValue(0,"odd")||this.lookupValue(0,"even")?r=this.Identifier():r=this.AnPlusB(),e=this.tokenStart,this.skipSC(),this.lookupValue(0,"of")&&(this.next(),n=this.SelectorList(),e=this.tokenStart),{type:"Nth",loc:this.getLocation(t,e),nth:r,selector:n}}function ys(t){this.node(t.nth),t.selector!==null&&(this.token(d,"of"),this.node(t.selector))}const dc=Object.freeze(Object.defineProperty({__proto__:null,generate:ys,name:fc,parse:Ss,structure:pc},Symbol.toStringTag,{value:"Module"})),gc="Number",mc={value:String};function bs(){return{type:"Number",loc:this.getLocation(this.tokenStart,this.tokenEnd),value:this.consume(x)}}function xs(t){this.token(x,t.value)}const kc=Object.freeze(Object.defineProperty({__proto__:null,generate:xs,name:gc,parse:bs,structure:mc},Symbol.toStringTag,{value:"Module"})),Sc="Operator",yc={value:String};function Cs(){const t=this.tokenStart;return this.next(),{type:"Operator",loc:this.getLocation(t,this.tokenStart),value:this.substrToCursor(t)}}function ws(t){this.tokenize(t.value)}const bc=Object.freeze(Object.defineProperty({__proto__:null,generate:ws,name:Sc,parse:Cs,structure:yc},Symbol.toStringTag,{value:"Module"})),xc="Parentheses",Cc={children:[[]]};function Ts(t,e){const n=this.tokenStart;let r=null;return this.eat(_),r=t.call(this,e),this.eof||this.eat(S),{type:"Parentheses",loc:this.getLocation(n,this.tokenStart),children:r}}function As(t){this.token(_,"("),this.children(t),this.token(S,")")}const wc=Object.freeze(Object.defineProperty({__proto__:null,generate:As,name:xc,parse:Ts,structure:Cc},Symbol.toStringTag,{value:"Module"})),Tc="Percentage",Ac={value:String};function vs(){return{type:"Percentage",loc:this.getLocation(this.tokenStart,this.tokenEnd),value:this.consumeNumber(F)}}function Es(t){this.token(F,t.value+"%")}const vc=Object.freeze(Object.defineProperty({__proto__:null,generate:Es,name:Tc,parse:vs,structure:Ac},Symbol.toStringTag,{value:"Module"})),Ec="PseudoClassSelector",$c="function",Lc={name:String,children:[["Raw"],null]};function $s(){const t=this.tokenStart;let e=null,n,r;return this.eat(Y),this.tokenType===T?(n=this.consumeFunctionName(),r=n.toLowerCase(),this.lookupNonWSType(0)==S?e=this.createList():hasOwnProperty.call(this.pseudo,r)?(this.skipSC(),e=this.pseudo[r].call(this),this.skipSC()):(e=this.createList(),e.push(this.Raw(null,!1))),this.eat(S)):n=this.consume(d),{type:"PseudoClassSelector",loc:this.getLocation(t,this.tokenStart),name:n,children:e}}function Ls(t){this.token(Y,":"),t.children===null?this.token(d,t.name):(this.token(T,t.name+"("),this.children(t),this.token(S,")"))}const Pc=Object.freeze(Object.defineProperty({__proto__:null,generate:Ls,name:Ec,parse:$s,structure:Lc,walkContext:$c},Symbol.toStringTag,{value:"Module"})),Oc="PseudoElementSelector",Rc="function",Ic={name:String,children:[["Raw"],null]};function Ps(){const t=this.tokenStart;let e=null,n,r;return this.eat(Y),this.eat(Y),this.tokenType===T?(n=this.consumeFunctionName(),r=n.toLowerCase(),this.lookupNonWSType(0)==S?e=this.createList():hasOwnProperty.call(this.pseudo,r)?(this.skipSC(),e=this.pseudo[r].call(this),this.skipSC()):(e=this.createList(),e.push(this.Raw(null,!1))),this.eat(S)):n=this.consume(d),{type:"PseudoElementSelector",loc:this.getLocation(t,this.tokenStart),name:n,children:e}}function