(function(){ "use strict"; var needEncoder=typeof globalThis.TextEncoder!=="function"; var needDecoder=typeof globalThis.TextDecoder!=="function"; if(!needEncoder&&!needDecoder){return;} function nextCp(str,i,strLen,advance){ var hi=str.charCodeAt(i); advance.one=true; if(hi>=0xD800&&hi<=0xDBFF&&i+1=0xDC00&&lo<=0xDFFF){advance.two=true;return (hi-0xD800)*0x400+(lo-0xDC00)+0x10000;} return 0xFFFD; } if(hi>=0xD800&&hi<=0xDFFF){return 0xFFFD;} return hi; } function utf8Size(str){ var size=0,n=str.length,i=0,adv={one:false,two:false},cp; while(i>6);out[k++]=0x80|(cp&63);} else if(cp<0x10000){out[k++]=0xE0|(cp>>12);out[k++]=0x80|((cp>>6)&63);out[k++]=0x80|(cp&63);} else{out[k++]=0xF0|(cp>>18);out[k++]=0x80|((cp>>12)&63);out[k++]=0x80|((cp>>6)&63);out[k++]=0x80|(cp&63);} } return out; } if(needEncoder){ globalThis.TextEncoder=function(){}; globalThis.TextEncoder.prototype.encode=function(input){ // WebIDL: "optional USVString input" - undefined takes the "" default, // null is passed through as the string "null". var str=input===undefined?"":String(input); var out=new Uint8Array(utf8Size(str)); return utf8EncodeInto(str,out); }; Object.defineProperty(globalThis.TextEncoder.prototype,"encoding",{get:function(){return "utf-8";}}); } if(needDecoder){ var UTF8_LABELS={"utf-8":true,"utf8":true,"unicode-1-1-utf-8":true}; function normalizeLabel(label){ var l=label===undefined||label===null?"utf-8":String(label).replace(/[\t\n\f\r ]+/g,"").toLowerCase(); if(!UTF8_LABELS[l]){throw new RangeError("The encoding label provided ('"+label+"') is not supported.");} return l; } function toBytes(input){ if(input instanceof ArrayBuffer||Object.prototype.toString.call(input)==="[object ArrayBuffer]"){return new Uint8Array(input);} return new Uint8Array(input.buffer,input.byteOffset,input.byteLength); } globalThis.TextDecoder=function(label,options){ normalizeLabel(label); var opts=options||{}; this.encodingValue="utf-8"; this.fatalValue=!!opts.fatal; this.ignoreBomValue=!!opts.ignoreBOM; this.pending=[]; this.bomChecked=false; }; Object.defineProperty(globalThis.TextDecoder.prototype,"encoding",{get:function(){return this.encodingValue;}}); Object.defineProperty(globalThis.TextDecoder.prototype,"fatal",{get:function(){return this.fatalValue;}}); Object.defineProperty(globalThis.TextDecoder.prototype,"ignoreBOM",{get:function(){return this.ignoreBomValue;}}); // Faithful UTF-8 decode per WHATWG Encoding §"utf-8 decoder", including // its exact malformed-input accounting, verified against the platform // decoder (Node/Bun V8) row by row: // - byte classes: 80-BF / C0 / C1 / F5-FF are invalid: one U+FFFD each, // next byte reprocessed. // - sequence leads with their second-byte bounds: // C2-DF any | E0 [A0-BF] | E1-EC any | ED [80-9F] | EE-EF any | // F0 [90-BF] | F1-F3 any | F4 [80-8F] // - BOUND BREACH (second byte is a continuation but outside bounds): // one U+FFFD PER BYTE of the subpart including the violator; decoding // resumes AFTER the violator ("ED A0 41" -> FFFD FFFD "A"). // - STRUCTURAL BREAK (non-continuation where a continuation belongs): // ONE U+FFFD for the pending subpart; the offending byte is // reprocessed ("E1 80 41" -> FFFD "A"). // - Chunk boundaries are transparent: an incomplete prefix is carried // across calls under {stream:true}; a truncated tail at the terminal // call yields one U+FFFD. globalThis.TextDecoder.prototype.decode=function(input,options){ var opts=options||{}; var fresh=!opts.stream; var text=""; if(input!==undefined&&input!==null){ var base=this.pending.concat(Array.prototype.slice.call(toBytes(input))); var n=base.length,i=0,stashed=null; while(i=0xC2&&b<=0xDF){len=2;} else if(b===0xE0){len=3;lower=0xA0;} else if(b>=0xE1&&b<=0xEC){len=3;} else if(b===0xED){len=3;upper=0x9F;} else if(b>=0xEE&&b<=0xEF){len=3;} else if(b===0xF0){len=4;lower=0x90;} else if(b>=0xF1&&b<=0xF3){len=4;} else if(b===0xF4){len=4;upper=0x8F;} else{ // Stray continuation (80-BF) or always-invalid lead (C0, C1, F5-FF). if(this.fatalValue){throw new TypeError("The encoded data is not valid.");} text+="\uFFFD";i++;continue; } var cp=b&(len===2?0x1F:len===3?0x0F:0x07); var j=1,broke=false,dangling=false; while(j=n){dangling=true;break;} var c=base[i+j]; if(c<0x80||c>0xBF){ // Structural break: single replacement, reprocess c. if(this.fatalValue){throw new TypeError("The encoded data is not valid.");} text+="\uFFFD";i=i+j;broke=true;break; } if(j===1&&(cupper)){ // Bound breach: one replacement per subpart byte incl. violator, // then continue after it. if(this.fatalValue){throw new TypeError("The encoded data is not valid.");} var reps=j+1;for(var q=0;q>10),0xDC00+(cp&0x3FF));} i+=len; } this.pending=stashed||[]; } if(!opts.stream&&this.pending.length>0){ // Terminal call with dangling bytes: truncated trailing sequence. Also // covers the spec's flush step: a terminal decode() with no argument // must still emit the replacement for a previously stashed tail. if(this.fatalValue){throw new TypeError("The encoded data is not valid.");} text+="\uFFFD"; this.pending=[]; } if(fresh){ // Each non-streaming decode strips one leading BOM from ITS OWN output // unless ignoreBOM is set. if(!this.ignoreBomValue&&text.charCodeAt(0)===0xFEFF){text=text.slice(1);} this.bomChecked=true; }else if(!this.ignoreBomValue&&!this.bomChecked&&text.length>0){ // Streaming: strip the BOM once, wherever the first output lands. if(text.charCodeAt(0)===0xFEFF){text=text.slice(1);} this.bomChecked=true; } return text; }; } })();

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