@oddbird/css-anchor-positioning/dist/assets/polyfill-SWhtadZ6.js

Polyfill for the proposed CSS anchor positioning spec

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s=this.tokenStart+i;for(;s<this.tokenEnd&&q(this.charCodeAt(s));s++);s===this.tokenStart+i&&this.error("Integer is expected",this.tokenStart+i),dt.call(this,s-this.tokenStart,ae),e=this.substring(t,s),s+1===this.tokenEnd?(this.next(),n=$e.call(this)):(dt.call(this,s-this.tokenStart+1,G),s+2===this.tokenEnd?(this.next(),this.skipSC(),Tt.call(this,bt),n="-"+this.consume(L)):(le.call(this,s-this.tokenStart+2,bt),this.next(),n=this.substrToCursor(s+1)))}else this.error();return e!==null&&e.charCodeAt(0)===ot&&(e=e.substr(1)),n!==null&&n.charCodeAt(0)===ot&&(n=n.substr(1)),{type:"AnPlusB",loc:this.getLocation(t,this.tokenStart),a:e,b:n}}function Jr(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 ma=Object.freeze(Object.defineProperty({__proto__:null,generate:Jr,name:da,parse:Xr,structure:ga},Symbol.toStringTag,{value:"Module"}));function In(){return this.Raw(this.consumeUntilLeftCurlyBracketOrSemicolon,!0)}function ya(){for(let t=1,e;e=this.lookupType(t);t++){if(e===It)return!0;if(e===et||e===D)return!1}return!1}const Sa="Atrule",ka="atrule",ba={name:String,prelude:["AtrulePrelude","Raw",null],block:["Block",null]};function Zr(t=!1){const e=this.tokenStart;let n,r,i=null,s=null;switch(this.eat(D),n=this.substrToCursor(e+1),r=n.toLowerCase(),this.skipSC(),this.eof===!1&&this.tokenType!==et&&this.tokenType!==V&&(this.parseAtrulePrelude?i=this.parseWithFallback(this.AtrulePrelude.bind(this,n,t),In):i=In.call(this,this.tokenIndex),this.skipSC()),this.tokenType){case V:this.next();break;case et:hasOwnProperty.call(this.atrule,r)&&typeof this.atrule[r].block=="function"?s=this.atrule[r].block.call(this,t):s=this.Block(ya.call(this));break}return{type:"Atrule",loc:this.getLocation(e,this.tokenStart),name:n,prelude:i,block:s}}function ti(t){this.token(D,"@"+t.name),t.prelude!==null&&this.node(t.prelude),t.block?this.node(t.block):this.token(V,";")}const Ca=Object.freeze(Object.defineProperty({__proto__:null,generate:ti,name:Sa,parse:Zr,structure:ba,walkContext:ka},Symbol.toStringTag,{value:"Module"})),va="AtrulePrelude",xa="atrulePrelude",wa={children:[[]]};function ei(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!==et&&this.tokenType!==V&&this.error("Semicolon or block is expected"),{type:"AtrulePrelude",loc:this.getLocationFromList(e),children:e}}function ni(t){this.children(t)}const Aa=Object.freeze(Object.defineProperty({__proto__:null,generate:ni,name:va,parse:ei,structure:wa,walkContext:xa},Symbol.toStringTag,{value:"Module"})),La=36,ri=42,ce=61,Ta=94,en=124,_a=126;function Ea(){this.eof&&this.error("Unexpected end of input");const t=this.tokenStart;let e=!1;return this.isDelim(ri)?(e=!0,this.next()):this.isDelim(en)||this.eat(C),this.isDelim(en)?this.charCodeAt(this.tokenStart+1)!==ce?(this.next(),this.eat(C)):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 Oa(){const t=this.tokenStart,e=this.charCodeAt(t);return e!==ce&&e!==_a&&e!==Ta&&e!==La&&e!==ri&&e!==en&&this.error("Attribute selector (=, ~=, ^=, $=, *=, |=) is expected"),this.next(),e!==ce&&(this.isDelim(ce)||this.error("Equal sign is expected"),this.next()),this.substrToCursor(t)}const $a="AttributeSelector",Pa={name:"Identifier",matcher:[String,null],value:["String","Identifier",null],flags:[String,null]};function ii(){const t=this.tokenStart;let e,n=null,r=null,i=null;return this.eat(Ft),this.skipSC(),e=Ea.call(this),this.skipSC(),this.tokenType!==qt&&(this.tokenType!==C&&(n=Oa.call(this),this.skipSC(),r=this.tokenType===pt?this.String():this.Identifier(),this.skipSC()),this.tokenType===C&&(i=this.consume(C),this.skipSC())),this.eat(qt),{type:"AttributeSelector",loc:this.getLocation(t,this.tokenStart),name:e,matcher:n,value:r,flags:i}}function si(t){this.token($,"["),this.node(t.name),t.matcher!==null&&(this.tokenize(t.matcher),this.node(t.value)),t.flags!==null&&this.token(C,t.flags),this.token($,"]")}const Ia=Object.freeze(Object.defineProperty({__proto__:null,generate:si,name:$a,parse:ii,structure:Pa},Symbol.toStringTag,{value:"Module"})),Na=38;function oi(){return this.Raw(null,!0)}function Nn(){return this.parseWithFallback(this.Rule,oi)}function Rn(){return this.Raw(this.consumeUntilSemicolonIncluded,!0)}function Ra(){if(this.tokenType===V)return Rn.call(this,this.tokenIndex);const t=this.parseWithFallback(this.Declaration,Rn);return this.tokenType===V&&this.next(),t}const Da="Block",Ma="block",Fa={children:[["Atrule","Rule","Declaration"]]};function ai(t){const e=t?Ra:Nn,n=this.tokenStart;let r=this.createList();this.eat(et);t:for(;!this.eof;)switch(this.tokenType){case It:break t;case R:case B:this.next();break;case D:r.push(this.parseWithFallback(this.Atrule.bind(this,t),oi));break;default:t&&this.isDelim(Na)?r.push(Nn.call(this)):r.push(e.call(this))}return this.eof||this.eat(It),{type:"Block",loc:this.getLocation(n,this.tokenStart),children:r}}function li(t){this.token(et,"{"),this.children(t,e=>{e.type==="Declaration"&&this.token(V,";")}),this.token(It,"}")}const ja=Object.freeze(Object.defineProperty({__proto__:null,generate:li,name:Da,parse:ai,structure:Fa,walkContext:Ma},Symbol.toStringTag,{value:"Module"})),Ba="Brackets",Wa={children:[[]]};function ci(t,e){const n=this.tokenStart;let r=null;return this.eat(Ft),r=t.call(this,e),this.eof||this.eat(qt),{type:"Brackets",loc:this.getLocation(n,this.tokenStart),children:r}}function ui(t){this.token($,"["),this.children(t),this.token($,"]")}const za=Object.freeze(Object.defineProperty({__proto__:null,generate:ui,name:Ba,parse:ci,structure:Wa},Symbol.toStringTag,{value:"Module"})),Ua="CDC",Va=[];function hi(){const t=this.tokenStart;return this.eat(H),{type:"CDC",loc:this.getLocation(t,this.tokenStart)}}function fi(){this.token(H,"-->")}const Ha=Object.freeze(Object.defineProperty({__proto__:null,generate:fi,name:Ua,parse:hi,structure:Va},Symbol.toStringTag,{value:"Module"})),Ga="CDO",qa=[];function pi(){const t=this.tokenStart;return this.eat(we),{type:"CDO",loc:this.getLocation(t,this.tokenStart)}}function di(){this.token(we,"<!--")}const Qa=Object.freeze(Object.defineProperty({__proto__:null,generate:di,name:Ga,parse:pi,structure:qa},Symbol.toStringTag,{value:"Module"})),Ka=46,Ya="ClassSelector",Xa={name:String};function gi(){return this.eatDelim(Ka),{type:"ClassSelector",loc:this.getLocation(this.tokenStart-1,this.tokenEnd),name:this.consume(C)}}function mi(t){this.token($,"."),this.token(C,t.name)}const Ja=Object.freeze(Object.defineProperty({__proto__:null,generate:mi,name:Ya,parse:gi,structure:Xa},Symbol.toStringTag,{value:"Module"})),Za=43,Dn=47,tl=62,el=126,nl="Combinator",rl={name:String};function yi(){const t=this.tokenStart;let e;switch(this.tokenType){case R:e=" ";break;case $:switch(this.charCodeAt(this.tokenStart)){case tl:case Za:case el:this.next();break;case Dn:this.next(),this.eatIdent("deep"),this.eatDelim(Dn);break;default:this.error("Combinator is expected")}e=this.substrToCursor(t);break}return{type:"Combinator",loc:this.getLocation(t,this.tokenStart),name:e}}function Si(t){this.tokenize(t.name)}const il=Object.freeze(Object.defineProperty({__proto__:null,generate:Si,name:nl,parse:yi,structure:rl},Symbol.toStringTag,{value:"Module"})),sl=42,ol=47,al="Comment",ll={value:String};function ki(){const t=this.tokenStart;let e=this.tokenEnd;return this.eat(B),e-t+2>=2&&this.charCodeAt(e-2)===sl&&this.charCodeAt(e-1)===ol&&(e-=2),{type:"Comment",loc:this.getLocation(t,this.tokenStart),value:this.substring(t+2,e)}}function bi(t){this.token(B,"/*"+t.value+"*/")}const cl=Object.freeze(Object.defineProperty({__proto__:null,generate:bi,name:al,parse:ki,structure:ll},Symbol.toStringTag,{value:"Module"})),ul=new Set([W,w,gt]),hl="Condition",fl={kind:String,children:[["Identifier","Feature","FeatureFunction","FeatureRange","SupportsDeclaration"]]};function Mn(t){return this.lookupTypeNonSC(1)===C&&ul.has(this.lookupTypeNonSC(2))?this.Feature(t):this.FeatureRange(t)}const pl={media:Mn,container:Mn,supports(){return this.SupportsDeclaration()}};function Ci(t="media"){const e=this.createList();t:for(;!this.eof;)switch(this.tokenType){case B:case R:this.next();continue;case C:e.push(this.Identifier());break;case P:{let n=this.parseWithFallback(()=>pl[t].call(this,t),()=>null);n||(n=this.parseWithFallback(()=>{this.eat(P);const r=this.Condition(t);return this.eat(w),r},()=>this.GeneralEnclosed(t))),e.push(n);break}case _:{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 vi(t){t.children.forEach(e=>{e.type==="Condition"?(this.token(P,"("),this.node(e),this.token(w,")")):this.node(e)})}const dl=Object.freeze(Object.defineProperty({__proto__:null,generate:vi,name:hl,parse:Ci,structure:fl},Symbol.toStringTag,{value:"Module"})),xi=33,gl=35,ml=36,yl=38,Sl=42,kl=43,Fn=47;function bl(){return this.Raw(this.consumeUntilExclamationMarkOrSemicolon,!0)}function Cl(){return this.Raw(this.consumeUntilExclamationMarkOrSemicolon,!1)}function vl(){const t=this.tokenIndex,e=this.Value();return e.type!=="Raw"&&this.eof===!1&&this.tokenType!==V&&this.isDelim(xi)===!1&&this.isBalanceEdge(t)===!1&&this.error(),e}const xl="Declaration",wl="declaration",Al={important:[Boolean,String],property:String,value:["Value","Raw"]};function wi(){const t=this.tokenStart,e=this.tokenIndex,n=Ll.call(this),r=ea(n),i=r?this.parseCustomProperty:this.parseValue,s=r?Cl:bl;let a=!1,l;this.skipSC(),this.eat(W);const u=this.tokenIndex;if(r||this.skipSC(),i?l=this.parseWithFallback(vl,s):l=s.call(this,this.tokenIndex),r&&l.type==="Value"&&l.children.isEmpty){for(let o=u-this.tokenIndex;o<=0;o++)if(this.lookupType(o)===R){l.children.appendData({type:"WhiteSpace",loc:null,value:" "});break}}return this.isDelim(xi)&&(a=Tl.call(this),this.skipSC()),this.eof===!1&&this.tokenType!==V&&this.isBalanceEdge(e)===!1&&this.error(),{type:"Declaration",loc:this.getLocation(t,this.tokenStart),important:a,property:n,value:l}}function Ai(t){this.token(C,t.property),this.token(W,":"),this.node(t.value),t.important&&(this.token($,"!"),this.token(C,t.important===!0?"important":t.important))}function Ll(){const t=this.tokenStart;if(this.tokenType===$)switch(this.charCodeAt(this.tokenStart)){case Sl:case ml:case kl:case gl:case yl:this.next();break;case Fn:this.next(),this.isDelim(Fn)&&this.next();break}return this.tokenType===I?this.eat(I):this.eat(C),this.substrToCursor(t)}function Tl(){this.eat($),this.skipSC();const t=this.consume(C);return t==="important"?!0:t}const _l=Object.freeze(Object.defineProperty({__proto__:null,generate:Ai,name:xl,parse:wi,structure:Al,walkContext:wl},Symbol.toStringTag,{value:"Module"})),El=38;function Pe(){return this.Raw(this.consumeUntilSemicolonIncluded,!0)}const Ol="DeclarationList",$l={children:[["Declaration","Atrule","Rule"]]};function Li(){const t=this.createList();for(;!this.eof;)switch(this.tokenType){case R:case B:case V:this.next();break;case D:t.push(this.parseWithFallback(this.Atrule.bind(this,!0),Pe));break;default:this.isDelim(El)?t.push(this.parseWithFallback(this.Rule,Pe)):t.push(this.parseWithFallback(this.Declaration,Pe))}return{type:"DeclarationList",loc:this.getLocationFromList(t),children:t}}function Ti(t){this.children(t,e=>{e.type==="Declaration"&&this.token(V,";")})}const Pl=Object.freeze(Object.defineProperty({__proto__:null,generate:Ti,name:Ol,parse:Li,structure:$l},Symbol.toStringTag,{value:"Module"})),Il="Dimension",Nl={value:String,unit:String};function _i(){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 Ei(t){this.token(E,t.value+t.unit)}const Rl=Object.freeze(Object.defineProperty({__proto__:null,generate:Ei,name:Il,parse:_i,structure:Nl},Symbol.toStringTag,{value:"Module"})),Dl=47,Ml="Feature",Fl={kind:String,name:String,value:["Identifier","Number","Dimension","Ratio","Function",null]};function Oi(t){const e=this.tokenStart;let n,r=null;if(this.eat(P),this.skipSC(),n=this.consume(C),this.skipSC(),this.tokenType!==w){switch(this.eat(W),this.skipSC(),this.tokenType){case L:this.lookupNonWSType(1)===$?r=this.Ratio():r=this.Number();break;case E:r=this.Dimension();break;case C:r=this.Identifier();break;case _:r=this.parseWithFallback(()=>{const i=this.Function(this.readSequence,this.scope.Value);return this.skipSC(),this.isDelim(Dl)&&this.error(),i},()=>this.Ratio());break;default:this.error("Number, dimension, ratio or identifier is expected")}this.skipSC()}return this.eof||this.eat(w),{type:"Feature",loc:this.getLocation(e,this.tokenStart),kind:t,name:n,value:r}}function $i(t){this.token(P,"("),this.token(C,t.name),t.value!==null&&(this.token(W,":"),this.node(t.value)),this.token(w,")")}const jl=Object.freeze(Object.defineProperty({__proto__:null,generate:$i,name:Ml,parse:Oi,structure:Fl},Symbol.toStringTag,{value:"Module"})),Bl="FeatureFunction",Wl={kind:String,feature:String,value:["Declaration","Selector"]};function zl(t,e){const r=(this.features[t]||{})[e];return typeof r!="function"&&this.error(`Unknown feature ${e}()`),r}function Pi(t="unknown"){const e=this.tokenStart,n=this.consumeFunctionName(),r=zl.call(this,t,n.toLowerCase());this.skipSC();const i=this.parseWithFallback(()=>{const s=this.tokenIndex,a=r.call(this);return this.eof===!1&&this.isBalanceEdge(s)===!1&&this.error(),a},()=>this.Raw(null,!1));return this.eof||this.eat(w),{type:"FeatureFunction",loc:this.getLocation(e,this.tokenStart),kind:t,feature:n,value:i}}function Ii(t){this.token(_,t.feature+"("),this.node(t.value),this.token(w,")")}const Ul=Object.freeze(Object.defineProperty({__proto__:null,generate:Ii,name:Bl,parse:Pi,structure:Wl},Symbol.toStringTag,{value:"Module"})),jn=47,Vl=60,Bn=61,Hl=62,Gl="FeatureRange",ql={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 Ie(){switch(this.skipSC(),this.tokenType){case L:return this.isDelim(jn,this.lookupOffsetNonSC(1))?this.Ratio():this.Number();case E:return this.Dimension();case C:return this.Identifier();case _:return this.parseWithFallback(()=>{const t=this.Function(this.readSequence,this.scope.Value);return this.skipSC(),this.isDelim(jn)&&this.error(),t},()=>this.Ratio());default:this.error("Number, dimension, ratio or identifier is expected")}}function Wn(t){if(this.skipSC(),this.isDelim(Vl)||this.isDelim(Hl)){const e=this.source[this.tokenStart];return this.next(),this.isDelim(Bn)?(this.next(),e+"="):e}if(this.isDelim(Bn))return"=";this.error(`Expected ${t?'":", ':""}"<", ">", "=" or ")"`)}function Ni(t="unknown"){const e=this.tokenStart;this.skipSC(),this.eat(P);const n=Ie.call(this),r=Wn.call(this,n.type==="Identifier"),i=Ie.call(this);let s=null,a=null;return this.lookupNonWSType(0)!==w&&(s=Wn.call(this),a=Ie.call(this)),this.skipSC(),this.eat(w),{type:"FeatureRange",loc:this.getLocation(e,this.tokenStart),kind:t,left:n,leftComparison:r,middle:i,rightComparison:s,right:a}}function Ri(t){this.token(P,"("),this.node(t.left),this.tokenize(t.leftComparison),this.node(t.middle),t.right&&(this.tokenize(t.rightComparison),this.node(t.right)),this.token(w,")")}const Ql=Object.freeze(Object.defineProperty({__proto__:null,generate:Ri,name:Gl,parse:Ni,structure:ql},Symbol.toStringTag,{value:"Module"})),Kl="Function",Yl="function",Xl={name:String,children:[[]]};function Di(t,e){const n=this.tokenStart,r=this.consumeFunctionName(),i=r.toLowerCase();let s;return s=e.hasOwnProperty(i)?e[i].call(this,e):t.call(this,e),this.eof||this.eat(w),{type:"Function",loc:this.getLocation(n,this.tokenStart),name:r,children:s}}function Mi(t){this.token(_,t.name+"("),this.children(t),this.token(w,")")}const Jl=Object.freeze(Object.defineProperty({__proto__:null,generate:Mi,name:Kl,parse:Di,structure:Xl,walkContext:Yl},Symbol.toStringTag,{value:"Module"})),Zl="GeneralEnclosed",tc={kind:String,function:[String,null],children:[[]]};function Fi(t){const e=this.tokenStart;let n=null;this.tokenType===_?n=this.consumeFunctionName():this.eat(P);const r=this.parseWithFallback(()=>{const i=this.tokenIndex,s=this.readSequence(this.scope.Value);return this.eof===!1&&this.isBalanceEdge(i)===!1&&this.error(),s},()=>this.createSingleNodeList(this.Raw(null,!1)));return this.eof||this.eat(w),{type:"GeneralEnclosed",loc:this.getLocation(e,this.tokenStart),kind:t,function:n,children:r}}function ji(t){t.function?this.token(_,t.function+"("):this.token(P,"("),this.children(t),this.token(w,")")}const ec=Object.freeze(Object.defineProperty({__proto__:null,generate:ji,name:Zl,parse:Fi,structure:tc},Symbol.toStringTag,{value:"Module"})),nc="XXX",rc="Hash",ic={value:String};function Bi(){const t=this.tokenStart;return this.eat(I),{type:"Hash",loc:this.getLocation(t,this.tokenStart),value:this.substrToCursor(t+1)}}function Wi(t){this.token(I,"#"+t.value)}const sc=Object.freeze(Object.defineProperty({__proto__:null,generate:Wi,name:rc,parse:Bi,structure:ic,xxx:nc},Symbol.toStringTag,{value:"Module"})),oc="Identifier",ac={name:String};function zi(){return{type:"Identifier",loc:this.getLocation(this.tokenStart,this.tokenEnd),name:this.consume(C)}}function Ui(t){this.token(C,t.name)}const lc=Object.freeze(Object.defineProperty({__proto__:null,generate:Ui,name:oc,parse:zi,structure:ac},Symbol.toStringTag,{value:"Module"})),cc="IdSelector",uc={name:String};function Vi(){const t=this.tokenStart;return this.eat(I),{type:"IdSelector",loc:this.getLocation(t,this.tokenStart),name:this.substrToCursor(t+1)}}function Hi(t){this.token($,"#"+t.name)}const hc=Object.freeze(Object.defineProperty({__proto__:null,generate:Hi,name:cc,parse:Vi,structure:uc},Symbol.toStringTag,{value:"Module"})),fc=46,pc="Layer",dc={name:String};function Gi(){let t=this.tokenStart,e=this.consume(C);for(;this.isDelim(fc);)this.eat($),e+="."+this.consume(C);return{type:"Layer",loc:this.getLocation(t,this.tokenStart),name:e}}function qi(t){this.tokenize(t.name)}const gc=Object.freeze(Object.defineProperty({__proto__:null,generate:qi,name:pc,parse:Gi,structure:dc},Symbol.toStringTag,{value:"Module"})),mc="LayerList",yc={children:[["Layer"]]};function Qi(){const