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webidl2 - npm Package Compare versions

Comparing version 23.11.0 to 23.12.0

2

dist/webidl2.js

@@ -1,2 +0,2 @@

!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.WebIDL2=t():e.WebIDL2=t()}(this,(function(){return function(e){var t={};function n(r){if(t[r])return t[r].exports;var s=t[r]={i:r,l:!1,exports:{}};return e[r].call(s.exports,s,s.exports,n),s.l=!0,s.exports}return n.m=e,n.c=t,n.d=function(e,t,r){n.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:r})},n.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},n.t=function(e,t){if(1&t&&(e=n(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var s in e)n.d(r,s,function(t){return e[t]}.bind(null,s));return r},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},n.p="",n(n.s=0)}([function(e,t,n){"use strict";function r(e,t,n,r,s,{level:i="error",autofix:o,ruleName:a}={}){function c(n){return n>0?e.slice(t,t+n):e.slice(Math.max(t+n,0),t)}function u(n,{precedes:r}={}){const s=n.map(e=>e.trivia+e.value).join(""),i=e[t];return"eof"===i.type?s:r?s+i.trivia:s.slice(i.trivia.length)}const l="eof"!==e[t].type?e[t].line:e.length>1?e[t-1].line:1,p=function(e){const t=e.split("\n");return t[t.length-1]}(u(c(-5),{precedes:!0})),d=c(5),m=u(d),f=p+m.split("\n")[0]+"\n"+(" ".repeat(p.length)+"^"),y="Syntax"===s?"since":"inside",b=`${s} error at line ${l}${e.name?` in ${e.name}`:""}${n&&n.name?`, ${y} \`${n.partial?"partial ":""}${n.type} ${n.name}\``:""}:\n${f}`;return{message:`${b} ${r}`,bareMessage:r,context:b,line:l,sourceName:e.name,level:i,ruleName:a,autofix:o,input:m,tokens:d}}function s(e,t,n,s){return r(e,t,n,s,"Syntax")}function i(e,t,n,s,i={}){return i.ruleName=n,r(t.source,e.index,t,s,"Validation",i)}n.r(t);class Base{constructor({source:e,tokens:t}){Object.defineProperties(this,{source:{value:e},tokens:{value:t},parent:{value:null,writable:!0},this:{value:this}})}toJSON(){const e={type:void 0,name:void 0,inheritance:void 0};let t=this;for(;t!==Object.prototype;){const n=Object.getOwnPropertyDescriptors(t);for(const[t,r]of Object.entries(n))(r.enumerable||r.get)&&(e[t]=this[t]);t=Object.getPrototypeOf(t)}return e}}function o(e,t,{useNullableInner:n}={}){if(!e.union){const r=t.unique.get(e.idlType);if(!r)return;if("typedef"===r.type){const{typedefIncludesDictionary:n}=t.cache;if(n.has(r))return n.get(r);t.cache.typedefIncludesDictionary.set(r,void 0);const s=o(r.idlType,t);if(t.cache.typedefIncludesDictionary.set(r,s),s)return{reference:e,dictionary:s.dictionary}}if("dictionary"===r.type&&(n||!e.nullable))return{reference:e,dictionary:r}}for(const n of e.subtype){const e=o(n,t);if(e)return n.union?e:{reference:n,dictionary:e.dictionary}}}function a(e,t){const n=e.consume("?");n&&(t.tokens.nullable=n),e.probe("?")&&e.error("Can't nullable more than once")}function c(e,t){let n=function(e,t){const n=e.consume("FrozenArray","Promise","sequence","record");if(!n)return;const r=A(new type_Type({source:e.source,tokens:{base:n}}));switch(r.tokens.open=e.consume("<")||e.error(`No opening bracket after ${n.type}`),n.type){case"Promise":{e.probe("[")&&e.error("Promise type cannot have extended attribute");const n=g(e,t)||e.error("Missing Promise subtype");r.subtype.push(n);break}case"sequence":case"FrozenArray":{const s=k(e,t)||e.error(`Missing ${n.type} subtype`);r.subtype.push(s);break}case"record":{e.probe("[")&&e.error("Record key cannot have extended attribute");const n=e.consume(...E)||e.error(`Record key must be one of: ${E.join(", ")}`),s=new type_Type({source:e.source,tokens:{base:n}});s.tokens.separator=e.consume(",")||e.error("Missing comma after record key type"),s.type=t;const i=k(e,t)||e.error("Error parsing generic type record");r.subtype.push(s,i);break}}return r.idlType||e.error(`Error parsing generic type ${n.type}`),r.tokens.close=e.consume(">")||e.error(`Missing closing bracket after ${n.type}`),r.this}(e,t)||b(e);if(!n){const t=e.consume("identifier",...E,...I);if(!t)return;n=new type_Type({source:e.source,tokens:{base:t}}),e.probe("<")&&e.error(`Unsupported generic type ${t.value}`)}return"Promise"===n.generic&&e.probe("?")&&e.error("Promise type cannot be nullable"),n.type=t||null,a(e,n),n.nullable&&"any"===n.idlType&&e.error("Type `any` cannot be made nullable"),n}class type_Type extends Base{static parse(e,t){return c(e,t)||function(e,t){const n={};if(n.open=e.consume("("),!n.open)return;const r=A(new type_Type({source:e.source,tokens:n}));for(r.type=t||null;;){const t=k(e)||e.error("No type after open parenthesis or 'or' in union type");"any"===t.idlType&&e.error("Type `any` cannot be included in a union type"),"Promise"===t.generic&&e.error("Type `Promise` cannot be included in a union type"),r.subtype.push(t);const n=e.consume("or");if(!n)break;t.tokens.separator=n}return r.idlType.length<2&&e.error("At least two types are expected in a union type but found less"),n.close=e.consume(")")||e.error("Unterminated union type"),a(e,r),r.this}(e,t)}constructor({source:e,tokens:t}){super({source:e,tokens:t}),Object.defineProperty(this,"subtype",{value:[],writable:!0}),this.extAttrs=[]}get generic(){return this.subtype.length&&this.tokens.base?this.tokens.base.value:""}get nullable(){return Boolean(this.tokens.nullable)}get union(){return Boolean(this.subtype.length)&&!this.tokens.base}get idlType(){if(this.subtype.length)return this.subtype;return d([this.tokens.prefix,this.tokens.base,this.tokens.postfix].filter(e=>e).map(e=>e.value).join(" "))}*validate(e){const t=!this.union&&e.unique.get(this.idlType),n=this.union?this:t&&"typedef"===t.type?t.idlType:void 0;if(n&&this.nullable){const{reference:t}=o(n,e)||{};if(t){const e=(this.union?t:this).tokens.base,n="Nullable union cannot include a dictionary type";yield i(e,this,"no-nullable-union-dict",n)}}else for(const t of this.subtype)yield*t.validate(e)}}class default_Default extends Base{static parse(e){const t=e.consume("=");if(!t)return null;const n=f(e)||e.consume("string","null","[","{")||e.error("No value for default"),r=[n];if("["===n.type){const t=e.consume("]")||e.error("Default sequence value must be empty");r.push(t)}else if("{"===n.type){const t=e.consume("}")||e.error("Default dictionary value must be empty");r.push(t)}return new default_Default({source:e.source,tokens:{assign:t},expression:r})}constructor({source:e,tokens:t,expression:n}){super({source:e,tokens:t}),n.parent=this,Object.defineProperty(this,"expression",{value:n})}get type(){return y(this.expression[0]).type}get value(){return y(this.expression[0]).value}get negative(){return y(this.expression[0]).negative}}class ArrayBase extends Array{constructor({source:e,tokens:t}){super(),Object.defineProperties(this,{source:{value:e},tokens:{value:t},parent:{value:null,writable:!0}})}}class token_Token extends Base{static parser(e,t){return()=>{const n=e.consume(t);if(n)return new token_Token({source:e.source,tokens:{value:n}})}}get value(){return d(this.tokens.value.value)}}function u(e,t){return m(e,{parser:token_Token.parser(e,t),listName:t+" list"})}const l=["identifier","decimal","integer","string"];class extended_attributes_ExtendedAttributeParameters extends Base{static parse(e){const t={assign:e.consume("=")},n=A(new extended_attributes_ExtendedAttributeParameters({source:e.source,tokens:t}));return t.assign&&(t.secondaryName=e.consume(...l)),t.open=e.consume("("),t.open?(n.list=n.rhsIsList?function(e){for(const t of l){const n=u(e,t);if(n.length)return n}e.error("Expected identifiers, strings, decimals, or integers but none found")}(e):h(e),t.close=e.consume(")")||e.error("Unexpected token in extended attribute argument list")):n.hasRhs&&!t.secondaryName&&e.error("No right hand side to extended attribute assignment"),n.this}get rhsIsList(){return this.tokens.assign&&!this.tokens.secondaryName}get rhsType(){return this.rhsIsList?this.list[0].tokens.value.type+"-list":this.tokens.secondaryName?this.tokens.secondaryName.type:null}}class extended_attributes_SimpleExtendedAttribute extends Base{static parse(e){const t=e.consume("identifier");if(t)return new extended_attributes_SimpleExtendedAttribute({source:e.source,tokens:{name:t},params:extended_attributes_ExtendedAttributeParameters.parse(e)})}constructor({source:e,tokens:t,params:n}){super({source:e,tokens:t}),n.parent=this,Object.defineProperty(this,"params",{value:n})}get type(){return"extended-attribute"}get name(){return this.tokens.name.value}get rhs(){const{rhsType:e,tokens:t,list:n}=this.params;return e?{type:e,value:this.params.rhsIsList?n:d(t.secondaryName.value)}:null}get arguments(){const{rhsIsList:e,list:t}=this.params;return!t||e?[]:t}*validate(e){if("NoInterfaceObject"===this.name){const e="`[NoInterfaceObject]` extended attribute is an undesirable feature that may be removed from Web IDL in the future. Refer to the [relevant upstream PR](https://github.com/heycam/webidl/pull/609) for more information.";yield i(this.tokens.name,this,"no-nointerfaceobject",e,{level:"warning"})}for(const t of this.arguments)yield*t.validate(e)}}class extended_attributes_ExtendedAttributes extends ArrayBase{static parse(e){const t={};if(t.open=e.consume("["),!t.open)return new extended_attributes_ExtendedAttributes({});const n=new extended_attributes_ExtendedAttributes({source:e.source,tokens:t});return n.push(...m(e,{parser:extended_attributes_SimpleExtendedAttribute.parse,listName:"extended attribute"})),t.close=e.consume("]")||e.error("Unexpected closing token of extended attribute"),n.length||e.error("Found an empty extended attribute"),e.probe("[")&&e.error("Illegal double extended attribute lists, consider merging them"),n}*validate(e){for(const t of this)yield*t.validate(e)}}class argument_Argument extends Base{static parse(e){const t=e.position,n={},r=A(new argument_Argument({source:e.source,tokens:n}));return r.extAttrs=extended_attributes_ExtendedAttributes.parse(e),n.optional=e.consume("optional"),r.idlType=k(e,"argument-type"),r.idlType?(n.optional||(n.variadic=e.consume("...")),n.name=e.consume("identifier",...N),n.name?(r.default=n.optional?default_Default.parse(e):null,r.this):e.unconsume(t)):e.unconsume(t)}get type(){return"argument"}get optional(){return!!this.tokens.optional}get variadic(){return!!this.tokens.variadic}get name(){return d(this.tokens.name.value)}*validate(e){yield*this.idlType.validate(e);const t=o(this.idlType,e,{useNullableInner:!0});if(t)if(this.idlType.nullable){const e="Dictionary arguments cannot be nullable.";yield i(this.tokens.name,this,"no-nullable-dict-arg",e)}else if(this.optional){if(!this.default){const e="Optional dictionary arguments must have a default value of `{}`.";yield i(this.tokens.name,this,"dict-arg-default",e,{autofix:p(this)})}}else if(this.parent&&!function e(t,n){if(n.cache.dictionaryIncludesRequiredField.has(t))return n.cache.dictionaryIncludesRequiredField.get(t);if(n.cache.dictionaryIncludesRequiredField.set(t,void 0),t.inheritance){const r=n.unique.get(t.inheritance);if(!r)return!0;if(e(r,n))return!0}const r=t.members.some(e=>e.required);return n.cache.dictionaryIncludesRequiredField.set(t,r),r}(t.dictionary,e)&&function(e){const t=e.parent.arguments||e.parent.list,n=t.indexOf(e);return!t.slice(n+1).some(e=>!e.optional)}(this)){const e="Dictionary argument must be optional if it has no required fields";yield i(this.tokens.name,this,"dict-arg-optional",e,{autofix:(n=this,()=>{const e=w(n.idlType);n.tokens.optional={type:"optional",value:"optional",trivia:e.trivia},e.trivia=" ",p(n)()})})}var n}}function p(e){return()=>{e.default=default_Default.parse(new tokeniser_Tokeniser(" = {}"))}}class operation_Operation extends Base{static parse(e,{special:t,regular:n}={}){const r={special:t},s=A(new operation_Operation({source:e.source,tokens:r}));return t&&"stringifier"===t.value&&(r.termination=e.consume(";"),r.termination)?(s.arguments=[],s):(t||n||(r.special=e.consume("getter","setter","deleter")),s.idlType=g(e)||e.error("Missing return type"),r.name=e.consume("identifier","includes"),r.open=e.consume("(")||e.error("Invalid operation"),s.arguments=h(e),r.close=e.consume(")")||e.error("Unterminated operation"),r.termination=e.consume(";")||e.error("Unterminated operation, expected `;`"),s.this)}get type(){return"operation"}get name(){const{name:e}=this.tokens;return e?d(e.value):""}get special(){return this.tokens.special?this.tokens.special.value:""}*validate(e){if(!this.name&&["","static"].includes(this.special)){const e="Regular or static operations must have both a return type and an identifier.";yield i(this.tokens.open,this,"incomplete-op",e)}this.idlType&&(yield*this.idlType.validate(e));for(const t of this.arguments)yield*t.validate(e)}}class attribute_Attribute extends Base{static parse(e,{special:t,noInherit:n=!1,readonly:r=!1}={}){const s=e.position,i={special:t},o=A(new attribute_Attribute({source:e.source,tokens:i}));if(t||n||(i.special=e.consume("inherit")),"inherit"===o.special&&e.probe("readonly")&&e.error("Inherited attributes cannot be read-only"),i.readonly=e.consume("readonly"),r&&!i.readonly&&e.probe("attribute")&&e.error("Attributes must be readonly in this context"),i.base=e.consume("attribute"),i.base){switch(o.idlType=k(e,"attribute-type")||e.error("Attribute lacks a type"),o.idlType.generic){case"sequence":case"record":e.error(`Attributes cannot accept ${o.idlType.generic} types`)}return i.name=e.consume("identifier","async","required")||e.error("Attribute lacks a name"),i.termination=e.consume(";")||e.error("Unterminated attribute, expected `;`"),o.this}e.unconsume(s)}get type(){return"attribute"}get special(){return this.tokens.special?this.tokens.special.value:""}get readonly(){return!!this.tokens.readonly}get name(){return d(this.tokens.name.value)}*validate(e){yield*this.idlType.validate(e)}}function d(e){return e.startsWith("_")?e.slice(1):e}function m(e,{parser:t,allowDangler:n,listName:r="list"}){const s=t(e);if(!s)return[];s.tokens.separator=e.consume(",");const i=[s];for(;s.tokens.separator;){const s=t(e);if(!s){n||e.error(`Trailing comma in ${r}`);break}if(s.tokens.separator=e.consume(","),i.push(s),!s.tokens.separator)break}return i}function f(e){return e.consume("true","false","Infinity","-Infinity","NaN","decimal","integer")}function y({type:e,value:t}){switch(e){case"true":case"false":return{type:"boolean",value:"true"===e};case"Infinity":case"-Infinity":return{type:"Infinity",negative:e.startsWith("-")};case"[":return{type:"sequence",value:[]};case"{":return{type:"dictionary"};case"decimal":case"integer":return{type:"number",value:t};case"string":return{type:"string",value:t.slice(1,-1)};default:return{type:e}}}function b(e){const{source:t}=e,n=function(){const n=e.consume("unsigned"),r=e.consume("short","long");if(r){const s=e.consume("long");return new type_Type({source:t,tokens:{prefix:n,base:r,postfix:s}})}n&&e.error("Failed to parse integer type")}()||function(){const n=e.consume("unrestricted"),r=e.consume("float","double");if(r)return new type_Type({source:t,tokens:{prefix:n,base:r}});n&&e.error("Failed to parse float type")}();if(n)return n;const r=e.consume("boolean","byte","octet");return r?new type_Type({source:t,tokens:{base:r}}):void 0}function h(e){return m(e,{parser:argument_Argument.parse,listName:"arguments list"})}function k(e,t){const n=extended_attributes_ExtendedAttributes.parse(e),r=type_Type.parse(e,t);return r&&(A(r).extAttrs=n),r}function g(e,t){const n=type_Type.parse(e,t||"return-type");if(n)return n;const r=e.consume("void");if(r){const t=new type_Type({source:e.source,tokens:{base:r}});return t.type="return-type",t}}function x(e){const t=e.consume("stringifier");if(t)return attribute_Attribute.parse(e,{special:t})||operation_Operation.parse(e,{special:t})||e.error("Unterminated stringifier")}function v(e){const t=e.split("\n");if(t.length){const e=t[t.length-1].match(/^\s+/);if(e)return e[0]}return""}function _(e){return()=>{if(e.extAttrs.length){const t=new tokeniser_Tokeniser("Exposed=Window,"),n=extended_attributes_SimpleExtendedAttribute.parse(t);n.tokens.separator=t.consume(",");const r=e.extAttrs[0];/^\s/.test(r.tokens.name.trivia)||(r.tokens.name.trivia=` ${r.tokens.name.trivia}`),e.extAttrs.unshift(n)}else{A(e).extAttrs=extended_attributes_ExtendedAttributes.parse(new tokeniser_Tokeniser("[Exposed=Window]"));const t=e.tokens.base.trivia;e.extAttrs.tokens.open.trivia=t,e.tokens.base.trivia=`\n${v(t)}`}}}function w(e){if(e.extAttrs.length)return e.extAttrs.tokens.open;if("operation"===e.type&&!e.special)return w(e.idlType);return Object.values(e.tokens).sort((e,t)=>e.index-t.index)[0]}function A(e,t){return t||(t=e),e?new Proxy(e,{get(e,t){const n=e[t];return Array.isArray(n)?A(n,e):n},set(e,n,r){if(e[n]=r,!r)return!0;if(Array.isArray(r))for(const e of r)void 0!==e.parent&&(e.parent=t);else void 0!==r.parent&&(r.parent=t);return!0}}):e}const T={decimal:/-?(?=[0-9]*\.|[0-9]+[eE])(([0-9]+\.[0-9]*|[0-9]*\.[0-9]+)([Ee][-+]?[0-9]+)?|[0-9]+[Ee][-+]?[0-9]+)/y,integer:/-?(0([Xx][0-9A-Fa-f]+|[0-7]*)|[1-9][0-9]*)/y,identifier:/[_-]?[A-Za-z][0-9A-Z_a-z-]*/y,string:/"[^"]*"/y,whitespace:/[\t\n\r ]+/y,comment:/((\/(\/.*|\*([^*]|\*[^/])*\*\/)[\t\n\r ]*)+)/y,other:/[^\t\n\r 0-9A-Za-z]/y},I=["ArrayBuffer","DataView","Int8Array","Int16Array","Int32Array","Uint8Array","Uint16Array","Uint32Array","Uint8ClampedArray","Float32Array","Float64Array","any","object","symbol"],E=["ByteString","DOMString","USVString"],N=["async","attribute","callback","const","constructor","deleter","dictionary","enum","getter","includes","inherit","interface","iterable","maplike","namespace","partial","required","setlike","setter","static","stringifier","typedef","unrestricted"],C=["-Infinity","FrozenArray","Infinity","NaN","Promise","boolean","byte","double","false","float","long","mixin","null","octet","optional","or","readonly","record","sequence","short","true","unsigned","void"].concat(N,E,I),$=["(",")",",","...",":",";","<","=",">","?","[","]","{","}"],M=["_constructor","toString","_toString"];class tokeniser_Tokeniser{constructor(e){this.source=function(e){const t=[];let n=0,r="",i=1,o=0;for(;n<e.length;){const c=e.charAt(n);let u=-1;if(/[\t\n\r ]/.test(c)?u=a("whitespace",{noFlushTrivia:!0}):"/"===c&&(u=a("comment",{noFlushTrivia:!0})),-1!==u){const e=t.pop().value;i+=(e.match(/\n/g)||[]).length,r+=e,o-=1}else if(/[-0-9.A-Z_a-z]/.test(c)){if(u=a("decimal"),-1===u&&(u=a("integer")),-1===u){u=a("identifier");const e=t.length-1,n=t[e];if(-1!==u){if(M.includes(n.value)){const r=`${d(n.value)} is a reserved identifier and must not be used.`;throw new WebIDLParseError(s(t,e,null,r))}C.includes(n.value)&&(n.type=n.value)}}}else'"'===c&&(u=a("string"));for(const s of $)if(e.startsWith(s,n)){t.push({type:s,value:s,trivia:r,line:i,index:o}),r="",n+=s.length,u=n;break}if(-1===u&&(u=a("other")),-1===u)throw new Error("Token stream not progressing");n=u,o+=1}return t.push({type:"eof",value:"",trivia:r}),t;function a(s,{noFlushTrivia:a}={}){const c=T[s];c.lastIndex=n;const u=c.exec(e);return u?(t.push({type:s,value:u[0],trivia:r,line:i,index:o}),a||(r=""),c.lastIndex):-1}}(e),this.position=0}error(e){throw new WebIDLParseError(s(this.source,this.position,this.current,e))}probe(e){return this.source.length>this.position&&this.source[this.position].type===e}consume(...e){for(const t of e){if(!this.probe(t))continue;const e=this.source[this.position];return this.position++,e}}unconsume(e){this.position=e}}class WebIDLParseError extends Error{constructor({message:e,bareMessage:t,context:n,line:r,sourceName:s,input:i,tokens:o}){super(e),this.name="WebIDLParseError",this.bareMessage=t,this.context=n,this.line=r,this.sourceName=s,this.input=i,this.tokens=o}}class enum_EnumValue extends token_Token{static parse(e){const t=e.consume("string");if(t)return new enum_EnumValue({source:e.source,tokens:{value:t}})}get type(){return"enum-value"}get value(){return super.value.slice(1,-1)}}class enum_Enum extends Base{static parse(e){const t={};if(t.base=e.consume("enum"),!t.base)return;t.name=e.consume("identifier")||e.error("No name for enum");const n=A(new enum_Enum({source:e.source,tokens:t}));return e.current=n.this,t.open=e.consume("{")||e.error("Bodyless enum"),n.values=m(e,{parser:enum_EnumValue.parse,allowDangler:!0,listName:"enumeration"}),e.probe("string")&&e.error("No comma between enum values"),t.close=e.consume("}")||e.error("Unexpected value in enum"),n.values.length||e.error("No value in enum"),t.termination=e.consume(";")||e.error("No semicolon after enum"),n.this}get type(){return"enum"}get name(){return d(this.tokens.name.value)}}class includes_Includes extends Base{static parse(e){const t=e.consume("identifier");if(!t)return;const n={target:t};if(n.includes=e.consume("includes"),n.includes)return n.mixin=e.consume("identifier")||e.error("Incomplete includes statement"),n.termination=e.consume(";")||e.error("No terminating ; for includes statement"),new includes_Includes({source:e.source,tokens:n});e.unconsume(t.index)}get type(){return"includes"}get target(){return d(this.tokens.target.value)}get includes(){return d(this.tokens.mixin.value)}}class typedef_Typedef extends Base{static parse(e){const t={},n=A(new typedef_Typedef({source:e.source,tokens:t}));if(t.base=e.consume("typedef"),t.base)return n.idlType=k(e,"typedef-type")||e.error("Typedef lacks a type"),t.name=e.consume("identifier")||e.error("Typedef lacks a name"),e.current=n.this,t.termination=e.consume(";")||e.error("Unterminated typedef, expected `;`"),n.this}get type(){return"typedef"}get name(){return d(this.tokens.name.value)}*validate(e){yield*this.idlType.validate(e)}}class callback_CallbackFunction extends Base{static parse(e,t){const n={base:t},r=A(new callback_CallbackFunction({source:e.source,tokens:n}));return n.name=e.consume("identifier")||e.error("Callback lacks a name"),e.current=r.this,n.assign=e.consume("=")||e.error("Callback lacks an assignment"),r.idlType=g(e)||e.error("Callback lacks a return type"),n.open=e.consume("(")||e.error("Callback lacks parentheses for arguments"),r.arguments=h(e),n.close=e.consume(")")||e.error("Unterminated callback"),n.termination=e.consume(";")||e.error("Unterminated callback, expected `;`"),r.this}get type(){return"callback"}get name(){return d(this.tokens.name.value)}*validate(e){yield*this.idlType.validate(e)}}class container_Container extends Base{static parse(e,t,{type:n,inheritable:r,allowedMembers:s}){const{tokens:i}=t;for(i.name=e.consume("identifier")||e.error(`Missing name in ${t.type}`),e.current=t,t=A(t),r&&Object.assign(i,function(e){const t=e.consume(":");return t?{colon:t,inheritance:e.consume("identifier")||e.error("Inheritance lacks a type")}:{}}(e)),i.open=e.consume("{")||e.error(`Bodyless ${n}`),t.members=[];;){if(i.close=e.consume("}"),i.close)return i.termination=e.consume(";")||e.error(`Missing semicolon after ${n}`),t.this;const r=extended_attributes_ExtendedAttributes.parse(e);let o;for(const[t,...n]of s)if(o=A(t(e,...n)),o)break;o||e.error("Unknown member"),o.extAttrs=r,t.members.push(o.this)}}get partial(){return!!this.tokens.partial}get name(){return d(this.tokens.name.value)}get inheritance(){return this.tokens.inheritance?d(this.tokens.inheritance.value):null}*validate(e){for(const t of this.members)t.validate&&(yield*t.validate(e))}}class constant_Constant extends Base{static parse(e){const t={};if(t.base=e.consume("const"),!t.base)return;let n=b(e);if(!n){const t=e.consume("identifier")||e.error("Const lacks a type");n=new type_Type({source:e.source,tokens:{base:t}})}e.probe("?")&&e.error("Unexpected nullable constant type"),n.type="const-type",t.name=e.consume("identifier")||e.error("Const lacks a name"),t.assign=e.consume("=")||e.error("Const lacks value assignment"),t.value=f(e)||e.error("Const lacks a value"),t.termination=e.consume(";")||e.error("Unterminated const, expected `;`");const r=new constant_Constant({source:e.source,tokens:t});return A(r).idlType=n,r}get type(){return"const"}get name(){return d(this.tokens.name.value)}get value(){return y(this.tokens.value)}}class iterable_IterableLike extends Base{static parse(e){const t=e.position,n={},r=A(new iterable_IterableLike({source:e.source,tokens:n}));if(n.readonly=e.consume("readonly"),n.readonly||(n.async=e.consume("async")),n.base=n.readonly?e.consume("maplike","setlike"):n.async?e.consume("iterable"):e.consume("iterable","maplike","setlike"),!n.base)return void e.unconsume(t);const{type:s}=r,i="maplike"===s||r.async,o=i||"iterable"===s;n.open=e.consume("<")||e.error(`Missing less-than sign \`<\` in ${s} declaration`);const a=k(e)||e.error(`Missing a type argument in ${s} declaration`);return r.idlType=[a],o&&(a.tokens.separator=e.consume(","),a.tokens.separator?r.idlType.push(k(e)):i&&e.error(`Missing second type argument in ${s} declaration`)),n.close=e.consume(">")||e.error(`Missing greater-than sign \`>\` in ${s} declaration`),n.termination=e.consume(";")||e.error(`Missing semicolon after ${s} declaration`),r.this}get type(){return this.tokens.base.value}get readonly(){return!!this.tokens.readonly}get async(){return!!this.tokens.async}}class constructor_Constructor extends Base{static parse(e){const t=e.consume("constructor");if(!t)return;const n={base:t};n.open=e.consume("(")||e.error("No argument list in constructor");const r=h(e);n.close=e.consume(")")||e.error("Unterminated constructor"),n.termination=e.consume(";")||e.error("No semicolon after constructor");const s=new constructor_Constructor({source:e.source,tokens:n});return A(s).arguments=r,s}get type(){return"constructor"}*validate(e){this.idlType&&(yield*this.idlType.validate(e));for(const t of this.arguments)yield*t.validate(e)}}function O(e){const t=e.consume("static");if(t)return attribute_Attribute.parse(e,{special:t})||operation_Operation.parse(e,{special:t})||e.error("No body in static member")}class interface_Interface extends container_Container{static parse(e,t,{partial:n=null}={}){const r={partial:n,base:t};return container_Container.parse(e,new interface_Interface({source:e.source,tokens:r}),{type:"interface",inheritable:!n,allowedMembers:[[constant_Constant.parse],[constructor_Constructor.parse],[O],[x],[iterable_IterableLike.parse],[attribute_Attribute.parse],[operation_Operation.parse]]})}get type(){return"interface"}*validate(e){if(yield*this.extAttrs.validate(e),!this.partial&&this.extAttrs.every(e=>"Exposed"!==e.name)&&this.extAttrs.every(e=>"NoInterfaceObject"!==e.name)){const e="Interfaces must have `[Exposed]` extended attribute. To fix, add, for example, `[Exposed=Window]`. Please also consider carefully if your interface should also be exposed in a Worker scope. Refer to the [WebIDL spec section on Exposed](https://heycam.github.io/webidl/#Exposed) for more information.";yield i(this.tokens.name,this,"require-exposed",e,{autofix:_(this)})}const t=this.extAttrs.filter(e=>"Constructor"===e.name);for(const e of t){const t="Constructors should now be represented as a `constructor()` operation on the interface instead of `[Constructor]` extended attribute. 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e.probe("interface")?callback_interface_CallbackInterface.parse(e,t):callback_CallbackFunction.parse(e,t)}()||i()||function(){const t=s("partial");if(t)return dictionary_Dictionary.parse(e,{partial:t})||i({partial:t})||namespace_Namespace.parse(e,{partial:t})||r("Partial doesn't apply to anything")}()||dictionary_Dictionary.parse(e)||enum_Enum.parse(e)||typedef_Typedef.parse(e)||includes_Includes.parse(e)||namespace_Namespace.parse(e)}const a=function(){if(!n.length)return[];const i=[];for(;;){const t=extended_attributes_ExtendedAttributes.parse(e),n=o();if(!n){t.length&&r("Stray extended attributes");break}A(n).extAttrs=t,i.push(n)}const a=s("eof");return t.concrete&&i.push(a),i}();return e.position<n.length&&r("Unrecognised tokens"),a}function j(e,t={}){const n=new tokeniser_Tokeniser(e);return void 0!==t.sourceName&&(n.source.name=t.sourceName),P(n,t)}function q(e){return e}const B={wrap:e=>e.join(""),trivia:q,name:q,reference:q,type:q,generic:q,nameless:q,inheritance:q,definition:q,extendedAttribute:q,extendedAttributeReference:q};function W(e,{templates:t=B}={}){function n(e,{unescaped:n,context:r}){return n||(n=e.startsWith("_")?e.slice(1):e),t.reference(e,n,r)}function r(e,n=q,...r){if(!e)return"";const s=n(e.value,...r);return t.wrap([t.trivia(e.trivia),s])}function s(e,t){return r(e,n,{context:t})}function i(e,n){return r(e,t.name,n)}function o(e){if(e.union||e.generic)return t.wrap([r(e.tokens.base,t.generic),r(e.tokens.open),...e.subtype.map(a),r(e.tokens.close)]);const s=e.tokens.prefix||e.tokens.base,i=e.tokens.prefix?[e.tokens.prefix.value,t.trivia(e.tokens.base.trivia)]:[],o=n(t.wrap([...i,e.tokens.base.value,r(e.tokens.postfix)]),{unescaped:e.idlType,context:e});return t.wrap([t.trivia(s.trivia),o])}function a(e){return t.wrap([d(e.extAttrs),o(e),r(e.tokens.nullable),r(e.tokens.separator)])}function c(e){return e?t.wrap([r(e.tokens.assign),...e.expression.map(e=>r(e))]):""}function u(e){return t.wrap([d(e.extAttrs),r(e.tokens.optional),t.type(a(e.idlType)),r(e.tokens.variadic),i(e.tokens.name,{data:e}),c(e.default),r(e.tokens.separator)])}function l(e){return t.wrap([r(e.tokens.value),r(e.tokens.separator)])}function p(e){const{rhsType:n}=e.params;return t.wrap([t.trivia(e.tokens.name.trivia),t.extendedAttribute(t.wrap([t.extendedAttributeReference(e.name),r(e.params.tokens.assign),s(e.params.tokens.secondaryName,e),r(e.params.tokens.open),...e.params.list?e.params.list.map("identifier-list"===n?n=>function(e,n){return t.wrap([s(e.tokens.value,n),r(e.tokens.separator)])}(n,e):n&&n.endsWith("-list")?l:u):[],r(e.params.tokens.close)])),r(e.tokens.separator)])}function d(e){return e.length?t.wrap([r(e.tokens.open),...e.map(p),r(e.tokens.close)]):""}function m(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.callback),r(e.tokens.partial),r(e.tokens.base),r(e.tokens.mixin),i(e.tokens.name,{data:e}),(s=e,s.tokens.inheritance?t.wrap([r(s.tokens.colon),t.trivia(s.tokens.inheritance.trivia),t.inheritance(n(s.tokens.inheritance.value,{context:s}))]):""),r(e.tokens.open),b(e.members,e),r(e.tokens.close),r(e.tokens.termination)]),{data:e});var s}function f(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.readonly),r(e.tokens.async),r(e.tokens.base,t.generic),r(e.tokens.open),t.wrap(e.idlType.map(a)),r(e.tokens.close),r(e.tokens.termination)]),{data:e,parent:n})}t=Object.assign({},B,t);const y={interface:m,"interface mixin":m,namespace:m,operation:function(e,n){const s=e.idlType?[t.type(a(e.idlType)),i(e.tokens.name,{data:e,parent:n}),r(e.tokens.open),t.wrap(e.arguments.map(u)),r(e.tokens.close)]:[];return t.definition(t.wrap([d(e.extAttrs),e.tokens.name?r(e.tokens.special):r(e.tokens.special,t.nameless,{data:e,parent:n}),...s,r(e.tokens.termination)]),{data:e,parent:n})},attribute:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.special),r(e.tokens.readonly),r(e.tokens.base),t.type(a(e.idlType)),i(e.tokens.name,{data:e,parent:n}),r(e.tokens.termination)]),{data:e,parent:n})},constructor:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base,t.nameless,{data:e,parent:n}),r(e.tokens.open),t.wrap(e.arguments.map(u)),r(e.tokens.close),r(e.tokens.termination)]),{data:e,parent:n})},dictionary:m,field:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.required),t.type(a(e.idlType)),i(e.tokens.name,{data:e,parent:n}),c(e.default),r(e.tokens.termination)]),{data:e,parent:n})},const:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),t.type(a(e.idlType)),i(e.tokens.name,{data:e,parent:n}),r(e.tokens.assign),r(e.tokens.value),r(e.tokens.termination)]),{data:e,parent:n})},typedef:function(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),t.type(a(e.idlType)),i(e.tokens.name,{data:e}),r(e.tokens.termination)]),{data:e})},includes:function(e){return t.definition(t.wrap([d(e.extAttrs),s(e.tokens.target,e),r(e.tokens.includes),s(e.tokens.mixin,e),r(e.tokens.termination)]),{data:e})},callback:function(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),i(e.tokens.name,{data:e}),r(e.tokens.assign),t.type(a(e.idlType)),r(e.tokens.open),...e.arguments.map(u),r(e.tokens.close),r(e.tokens.termination)]),{data:e})},enum:function(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),i(e.tokens.name,{data:e}),r(e.tokens.open),b(e.values,e),r(e.tokens.close),r(e.tokens.termination)]),{data:e})},"enum-value":function(e,n){return t.wrap([t.trivia(e.tokens.value.trivia),t.definition(t.wrap(['"',t.name(e.value,{data:e,parent:n}),'"']),{data:e,parent:n}),r(e.tokens.separator)])},iterable:f,maplike:f,setlike:f,"callback interface":m,eof:function(e){return t.trivia(e.trivia)}};function b(e,n){if(!e)return;const r=e.map(e=>function(e,t){if(!y[e.type])throw new Error(`Type "${e.type}" is unsupported`);return y[e.type](e,t)}(e,n));return t.wrap(r)}return b(e)}function F(e,t){const n=new Map,r=e.filter(e=>"includes"===e.type);for(const e of r){const r=t.get(e.includes);if(!r)continue;const s=n.get(e.target);s?s.push(r):n.set(e.target,[r])}return n}function*U(e){const t=function(e){const t=new Map,n=new Set,r=new Map;for(const s of e)if(s.partial){const e=r.get(s.name);e?e.push(s):r.set(s.name,[s])}else s.name&&(t.has(s.name)?n.add(s):t.set(s.name,s));return{all:e,unique:t,partials:r,duplicates:n,mixinMap:F(e,t),cache:{typedefIncludesDictionary:new WeakMap,dictionaryIncludesRequiredField:new WeakMap}}}(e);for(const e of 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i(e,t,n,s,i={}){return i.ruleName=n,r(t.source,e.index,t,s,"Validation",i)}n.r(t),n.d(t,"parse",(function(){return q})),n.d(t,"write",(function(){return $})),n.d(t,"validate",(function(){return S})),n.d(t,"WebIDLParseError",(function(){return WebIDLParseError}));class Base{constructor({source:e,tokens:t}){Object.defineProperties(this,{source:{value:e},tokens:{value:t,writable:!0},parent:{value:null,writable:!0},this:{value:this}})}toJSON(){const e={type:void 0,name:void 0,inheritance:void 0};let t=this;for(;t!==Object.prototype;){const n=Object.getOwnPropertyDescriptors(t);for(const[t,r]of Object.entries(n))(r.enumerable||r.get)&&(e[t]=this[t]);t=Object.getPrototypeOf(t)}return e}}function a(e,t,{useNullableInner:n}={}){if(!e.union){const r=t.unique.get(e.idlType);if(!r)return;if("typedef"===r.type){const{typedefIncludesDictionary:n}=t.cache;if(n.has(r))return n.get(r);t.cache.typedefIncludesDictionary.set(r,void 0);const s=a(r.idlType,t);if(t.cache.typedefIncludesDictionary.set(r,s),s)return{reference:e,dictionary:s.dictionary}}if("dictionary"===r.type&&(n||!e.nullable))return{reference:e,dictionary:r}}for(const n of e.subtype){const e=a(n,t);if(e)return n.union?e:{reference:n,dictionary:e.dictionary}}}class ArrayBase extends Array{constructor({source:e,tokens:t}){super(),Object.defineProperties(this,{source:{value:e},tokens:{value:t},parent:{value:null,writable:!0}})}}class token_Token extends Base{static parser(e,t){return()=>{const n=e.consume(t);if(n)return new token_Token({source:e.source,tokens:{value:n}})}}get value(){return m(this.tokens.value.value)}}function o(e,t){return f(e,{parser:token_Token.parser(e,t),listName:t+" list"})}const c=["identifier","decimal","integer","string"],u=new Map([...["NoInterfaceObject","LenientSetter","LenientThis","TreatNonObjectAsNull","Unforgeable"].map(e=>[e,"Legacy"+e]),["NamedConstructor","LegacyFactoryFunction"],["OverrideBuiltins","LegacyOverrideBuiltIns"],["TreatNullAs","LegacyNullToEmptyString"]]);class extended_attributes_ExtendedAttributeParameters extends Base{static parse(e){const t={assign:e.consume("=")},n=T(new extended_attributes_ExtendedAttributeParameters({source:e.source,tokens:t}));return t.assign&&(t.secondaryName=e.consume(...c)),t.open=e.consume("("),t.open?(n.list=n.rhsIsList?function(e){for(const t of c){const n=o(e,t);if(n.length)return n}e.error("Expected identifiers, strings, decimals, or integers but none found")}(e):k(e),t.close=e.consume(")")||e.error("Unexpected token in extended attribute argument list")):n.hasRhs&&!t.secondaryName&&e.error("No right hand side to extended attribute assignment"),n.this}get rhsIsList(){return this.tokens.assign&&!this.tokens.secondaryName}get rhsType(){return this.rhsIsList?this.list[0].tokens.value.type+"-list":this.tokens.secondaryName?this.tokens.secondaryName.type:null}}class extended_attributes_SimpleExtendedAttribute extends Base{static parse(e){const t=e.consume("identifier");if(t)return new extended_attributes_SimpleExtendedAttribute({source:e.source,tokens:{name:t},params:extended_attributes_ExtendedAttributeParameters.parse(e)})}constructor({source:e,tokens:t,params:n}){super({source:e,tokens:t}),n.parent=this,Object.defineProperty(this,"params",{value:n})}get type(){return"extended-attribute"}get name(){return this.tokens.name.value}get rhs(){const{rhsType:e,tokens:t,list:n}=this.params;return e?{type:e,value:this.params.rhsIsList?n:m(t.secondaryName.value)}:null}get arguments(){const{rhsIsList:e,list:t}=this.params;return!t||e?[]:t}*validate(e){const{name:t}=this;if("LegacyNoInterfaceObject"===t){const e="`[LegacyNoInterfaceObject]` extended attribute is an undesirable feature that may be removed from Web IDL in the future. 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l(e,t){const n=e.consume("?");n&&(t.tokens.nullable=n),e.probe("?")&&e.error("Can't nullable more than once")}function p(e,t){let n=function(e,t){const n=e.consume("FrozenArray","Promise","sequence","record");if(!n)return;const r=T(new type_Type({source:e.source,tokens:{base:n}}));switch(r.tokens.open=e.consume("<")||e.error("No opening bracket after "+n.type),n.type){case"Promise":{e.probe("[")&&e.error("Promise type cannot have extended attribute");const n=x(e,t)||e.error("Missing Promise subtype");r.subtype.push(n);break}case"sequence":case"FrozenArray":{const s=g(e,t)||e.error(`Missing ${n.type} subtype`);r.subtype.push(s);break}case"record":{e.probe("[")&&e.error("Record key cannot have extended attribute");const n=e.consume(...E)||e.error("Record key must be one of: "+E.join(", ")),s=new type_Type({source:e.source,tokens:{base:n}});s.tokens.separator=e.consume(",")||e.error("Missing comma after record key type"),s.type=t;const i=g(e,t)||e.error("Error parsing generic type record");r.subtype.push(s,i);break}}return r.idlType||e.error("Error parsing generic type "+n.type),r.tokens.close=e.consume(">")||e.error("Missing closing bracket after "+n.type),r.this}(e,t)||h(e);if(!n){const t=e.consume("identifier",...E,...N);if(!t)return;n=new type_Type({source:e.source,tokens:{base:t}}),e.probe("<")&&e.error("Unsupported generic type "+t.value)}return"Promise"===n.generic&&e.probe("?")&&e.error("Promise type cannot be nullable"),n.type=t||null,l(e,n),n.nullable&&"any"===n.idlType&&e.error("Type `any` cannot be made nullable"),n}class type_Type extends Base{static parse(e,t){return p(e,t)||function(e,t){const n={};if(n.open=e.consume("("),!n.open)return;const r=T(new type_Type({source:e.source,tokens:n}));for(r.type=t||null;;){const t=g(e)||e.error("No type after open parenthesis or 'or' in union type");"any"===t.idlType&&e.error("Type `any` cannot be included in a union type"),"Promise"===t.generic&&e.error("Type `Promise` cannot be included in a union type"),r.subtype.push(t);const n=e.consume("or");if(!n)break;t.tokens.separator=n}return r.idlType.length<2&&e.error("At least two types are expected in a union type but found less"),n.close=e.consume(")")||e.error("Unterminated union type"),l(e,r),r.this}(e,t)}constructor({source:e,tokens:t}){super({source:e,tokens:t}),Object.defineProperty(this,"subtype",{value:[],writable:!0}),this.extAttrs=new extended_attributes_ExtendedAttributes({})}get generic(){return this.subtype.length&&this.tokens.base?this.tokens.base.value:""}get nullable(){return Boolean(this.tokens.nullable)}get union(){return Boolean(this.subtype.length)&&!this.tokens.base}get idlType(){if(this.subtype.length)return this.subtype;return m([this.tokens.prefix,this.tokens.base,this.tokens.postfix].filter(e=>e).map(e=>e.value).join(" "))}*validate(e){yield*this.extAttrs.validate(e);const t=!this.union&&e.unique.get(this.idlType),n=this.union?this:t&&"typedef"===t.type?t.idlType:void 0;if(n&&this.nullable){const{reference:t}=a(n,e)||{};if(t){const e=(this.union?t:this).tokens.base,n="Nullable union cannot include a dictionary type";yield i(e,this,"no-nullable-union-dict",n)}}else for(const t of this.subtype)yield*t.validate(e)}}class default_Default extends Base{static parse(e){const t=e.consume("=");if(!t)return null;const n=y(e)||e.consume("string","null","[","{")||e.error("No value for default"),r=[n];if("["===n.type){const t=e.consume("]")||e.error("Default sequence value must be empty");r.push(t)}else if("{"===n.type){const t=e.consume("}")||e.error("Default dictionary value must be empty");r.push(t)}return new default_Default({source:e.source,tokens:{assign:t},expression:r})}constructor({source:e,tokens:t,expression:n}){super({source:e,tokens:t}),n.parent=this,Object.defineProperty(this,"expression",{value:n})}get type(){return b(this.expression[0]).type}get value(){return b(this.expression[0]).value}get negative(){return b(this.expression[0]).negative}}class argument_Argument extends Base{static parse(e){const t=e.position,n={},r=T(new argument_Argument({source:e.source,tokens:n}));return r.extAttrs=extended_attributes_ExtendedAttributes.parse(e),n.optional=e.consume("optional"),r.idlType=g(e,"argument-type"),r.idlType?(n.optional||(n.variadic=e.consume("...")),n.name=e.consume("identifier",...O),n.name?(r.default=n.optional?default_Default.parse(e):null,r.this):e.unconsume(t)):e.unconsume(t)}get type(){return"argument"}get optional(){return!!this.tokens.optional}get variadic(){return!!this.tokens.variadic}get name(){return m(this.tokens.name.value)}*validate(e){yield*this.idlType.validate(e);const t=a(this.idlType,e,{useNullableInner:!0});if(t)if(this.idlType.nullable){const e="Dictionary arguments cannot be nullable.";yield i(this.tokens.name,this,"no-nullable-dict-arg",e)}else if(this.optional){if(!this.default){const e="Optional dictionary arguments must have a default value of `{}`.";yield i(this.tokens.name,this,"dict-arg-default",e,{autofix:d(this)})}}else if(this.parent&&!function e(t,n){if(n.cache.dictionaryIncludesRequiredField.has(t))return n.cache.dictionaryIncludesRequiredField.get(t);if(n.cache.dictionaryIncludesRequiredField.set(t,void 0),t.inheritance){const r=n.unique.get(t.inheritance);if(!r)return!0;if(e(r,n))return!0}const r=t.members.some(e=>e.required);return n.cache.dictionaryIncludesRequiredField.set(t,r),r}(t.dictionary,e)&&function(e){const t=e.parent.arguments||e.parent.list,n=t.indexOf(e);return!t.slice(n+1).some(e=>!e.optional)}(this)){const e="Dictionary argument must be optional if it has no required fields";yield i(this.tokens.name,this,"dict-arg-optional",e,{autofix:(n=this,()=>{const e=A(n.idlType);n.tokens.optional={type:"optional",value:"optional",trivia:e.trivia},e.trivia=" ",d(n)()})})}var n}}function d(e){return()=>{e.default=default_Default.parse(new tokeniser_Tokeniser(" = {}"))}}class operation_Operation extends Base{static parse(e,{special:t,regular:n}={}){const r={special:t},s=T(new operation_Operation({source:e.source,tokens:r}));return t&&"stringifier"===t.value&&(r.termination=e.consume(";"),r.termination)?(s.arguments=[],s):(t||n||(r.special=e.consume("getter","setter","deleter")),s.idlType=x(e)||e.error("Missing return type"),r.name=e.consume("identifier","includes"),r.open=e.consume("(")||e.error("Invalid operation"),s.arguments=k(e),r.close=e.consume(")")||e.error("Unterminated operation"),r.termination=e.consume(";")||e.error("Unterminated operation, expected `;`"),s.this)}get type(){return"operation"}get name(){const{name:e}=this.tokens;return e?m(e.value):""}get special(){return this.tokens.special?this.tokens.special.value:""}*validate(e){if(!this.name&&["","static"].includes(this.special)){const e="Regular or static operations must have both a return type and an identifier.";yield i(this.tokens.open,this,"incomplete-op",e)}this.idlType&&(yield*this.idlType.validate(e));for(const t of this.arguments)yield*t.validate(e)}}class attribute_Attribute extends Base{static parse(e,{special:t,noInherit:n=!1,readonly:r=!1}={}){const s=e.position,i={special:t},a=T(new attribute_Attribute({source:e.source,tokens:i}));if(t||n||(i.special=e.consume("inherit")),"inherit"===a.special&&e.probe("readonly")&&e.error("Inherited attributes cannot be read-only"),i.readonly=e.consume("readonly"),r&&!i.readonly&&e.probe("attribute")&&e.error("Attributes must be readonly in this context"),i.base=e.consume("attribute"),i.base){switch(a.idlType=g(e,"attribute-type")||e.error("Attribute lacks a type"),a.idlType.generic){case"sequence":case"record":e.error(`Attributes cannot accept ${a.idlType.generic} types`)}return i.name=e.consume("identifier","async","required")||e.error("Attribute lacks a name"),i.termination=e.consume(";")||e.error("Unterminated attribute, expected `;`"),a.this}e.unconsume(s)}get type(){return"attribute"}get special(){return this.tokens.special?this.tokens.special.value:""}get readonly(){return!!this.tokens.readonly}get name(){return m(this.tokens.name.value)}*validate(e){yield*this.extAttrs.validate(e),yield*this.idlType.validate(e)}}function m(e){return e.startsWith("_")?e.slice(1):e}function f(e,{parser:t,allowDangler:n,listName:r="list"}){const s=t(e);if(!s)return[];s.tokens.separator=e.consume(",");const i=[s];for(;s.tokens.separator;){const s=t(e);if(!s){n||e.error("Trailing comma in "+r);break}if(s.tokens.separator=e.consume(","),i.push(s),!s.tokens.separator)break}return i}function y(e){return e.consume("true","false","Infinity","-Infinity","NaN","decimal","integer")}function b({type:e,value:t}){switch(e){case"true":case"false":return{type:"boolean",value:"true"===e};case"Infinity":case"-Infinity":return{type:"Infinity",negative:e.startsWith("-")};case"[":return{type:"sequence",value:[]};case"{":return{type:"dictionary"};case"decimal":case"integer":return{type:"number",value:t};case"string":return{type:"string",value:t.slice(1,-1)};default:return{type:e}}}function h(e){const{source:t}=e,n=function(){const n=e.consume("unsigned"),r=e.consume("short","long");if(r){const s=e.consume("long");return new type_Type({source:t,tokens:{prefix:n,base:r,postfix:s}})}n&&e.error("Failed to parse integer type")}()||function(){const n=e.consume("unrestricted"),r=e.consume("float","double");if(r)return new type_Type({source:t,tokens:{prefix:n,base:r}});n&&e.error("Failed to parse float type")}();if(n)return n;const r=e.consume("boolean","byte","octet");return r?new type_Type({source:t,tokens:{base:r}}):void 0}function k(e){return f(e,{parser:argument_Argument.parse,listName:"arguments list"})}function g(e,t){const n=extended_attributes_ExtendedAttributes.parse(e),r=type_Type.parse(e,t);return r&&(T(r).extAttrs=n),r}function x(e,t){const n=type_Type.parse(e,t||"return-type");if(n)return n;const r=e.consume("void");if(r){const t=new type_Type({source:e.source,tokens:{base:r}});return t.type="return-type",t}}function v(e){const t=e.consume("stringifier");if(t)return attribute_Attribute.parse(e,{special:t})||operation_Operation.parse(e,{special:t})||e.error("Unterminated stringifier")}function _(e){const t=e.split("\n");if(t.length){const e=t[t.length-1].match(/^\s+/);if(e)return e[0]}return""}function w(e){return()=>{if(e.extAttrs.length){const t=new tokeniser_Tokeniser("Exposed=Window,"),n=extended_attributes_SimpleExtendedAttribute.parse(t);n.tokens.separator=t.consume(",");const r=e.extAttrs[0];/^\s/.test(r.tokens.name.trivia)||(r.tokens.name.trivia=" "+r.tokens.name.trivia),e.extAttrs.unshift(n)}else{T(e).extAttrs=extended_attributes_ExtendedAttributes.parse(new tokeniser_Tokeniser("[Exposed=Window]"));const t=e.tokens.base.trivia;e.extAttrs.tokens.open.trivia=t,e.tokens.base.trivia="\n"+_(t)}}}function A(e){if(e.extAttrs.length)return e.extAttrs.tokens.open;if("operation"===e.type&&!e.special)return A(e.idlType);return Object.values(e.tokens).sort((e,t)=>e.index-t.index)[0]}function T(e,t){return t||(t=e),e?new Proxy(e,{get(e,t){const n=e[t];return Array.isArray(n)?T(n,e):n},set(e,n,r){if(e[n]=r,!r)return!0;if(Array.isArray(r))for(const e of r)void 0!==e.parent&&(e.parent=t);else void 0!==r.parent&&(r.parent=t);return!0}}):e}const I={decimal:/-?(?=[0-9]*\.|[0-9]+[eE])(([0-9]+\.[0-9]*|[0-9]*\.[0-9]+)([Ee][-+]?[0-9]+)?|[0-9]+[Ee][-+]?[0-9]+)/y,integer:/-?(0([Xx][0-9A-Fa-f]+|[0-7]*)|[1-9][0-9]*)/y,identifier:/[_-]?[A-Za-z][0-9A-Z_a-z-]*/y,string:/"[^"]*"/y,whitespace:/[\t\n\r ]+/y,comment:/((\/(\/.*|\*([^*]|\*[^/])*\*\/)[\t\n\r ]*)+)/y,other:/[^\t\n\r 0-9A-Za-z]/y},N=["ArrayBuffer","DataView","Int8Array","Int16Array","Int32Array","Uint8Array","Uint16Array","Uint32Array","Uint8ClampedArray","Float32Array","Float64Array","any","object","symbol"],E=["ByteString","DOMString","USVString"],O=["async","attribute","callback","const","constructor","deleter","dictionary","enum","getter","includes","inherit","interface","iterable","maplike","namespace","partial","required","setlike","setter","static","stringifier","typedef","unrestricted"],C=["-Infinity","FrozenArray","Infinity","NaN","Promise","boolean","byte","double","false","float","long","mixin","null","octet","optional","or","readonly","record","sequence","short","true","unsigned","void"].concat(O,E,N),M=["(",")",",","...",":",";","<","=",">","?","[","]","{","}"],D=["_constructor","toString","_toString"];class tokeniser_Tokeniser{constructor(e){this.source=function(e){const t=[];let n=0,r="",i=1,a=0;for(;n<e.length;){const c=e.charAt(n);let u=-1;if(/[\t\n\r ]/.test(c)?u=o("whitespace",{noFlushTrivia:!0}):"/"===c&&(u=o("comment",{noFlushTrivia:!0})),-1!==u){const e=t.pop().value;i+=(e.match(/\n/g)||[]).length,r+=e,a-=1}else if(/[-0-9.A-Z_a-z]/.test(c)){if(u=o("decimal"),-1===u&&(u=o("integer")),-1===u){u=o("identifier");const e=t.length-1,n=t[e];if(-1!==u){if(D.includes(n.value)){const r=m(n.value)+" is a reserved identifier and must not be used.";throw new WebIDLParseError(s(t,e,null,r))}C.includes(n.value)&&(n.type=n.value)}}}else'"'===c&&(u=o("string"));for(const s of M)if(e.startsWith(s,n)){t.push({type:s,value:s,trivia:r,line:i,index:a}),r="",n+=s.length,u=n;break}if(-1===u&&(u=o("other")),-1===u)throw new Error("Token stream not progressing");n=u,a+=1}return t.push({type:"eof",value:"",trivia:r}),t;function o(s,{noFlushTrivia:o}={}){const c=I[s];c.lastIndex=n;const u=c.exec(e);return u?(t.push({type:s,value:u[0],trivia:r,line:i,index:a}),o||(r=""),c.lastIndex):-1}}(e),this.position=0}error(e){throw new WebIDLParseError(s(this.source,this.position,this.current,e))}probe(e){return this.source.length>this.position&&this.source[this.position].type===e}consume(...e){for(const t of e){if(!this.probe(t))continue;const e=this.source[this.position];return this.position++,e}}unconsume(e){this.position=e}}class WebIDLParseError extends Error{constructor({message:e,bareMessage:t,context:n,line:r,sourceName:s,input:i,tokens:a}){super(e),this.name="WebIDLParseError",this.bareMessage=t,this.context=n,this.line=r,this.sourceName=s,this.input=i,this.tokens=a}}class enum_EnumValue extends token_Token{static parse(e){const t=e.consume("string");if(t)return new enum_EnumValue({source:e.source,tokens:{value:t}})}get type(){return"enum-value"}get value(){return super.value.slice(1,-1)}}class enum_Enum extends Base{static parse(e){const t={};if(t.base=e.consume("enum"),!t.base)return;t.name=e.consume("identifier")||e.error("No name for enum");const n=T(new enum_Enum({source:e.source,tokens:t}));return e.current=n.this,t.open=e.consume("{")||e.error("Bodyless enum"),n.values=f(e,{parser:enum_EnumValue.parse,allowDangler:!0,listName:"enumeration"}),e.probe("string")&&e.error("No comma between enum values"),t.close=e.consume("}")||e.error("Unexpected value in enum"),n.values.length||e.error("No value in enum"),t.termination=e.consume(";")||e.error("No semicolon after enum"),n.this}get type(){return"enum"}get name(){return m(this.tokens.name.value)}}class includes_Includes extends Base{static parse(e){const t=e.consume("identifier");if(!t)return;const n={target:t};if(n.includes=e.consume("includes"),n.includes)return n.mixin=e.consume("identifier")||e.error("Incomplete includes statement"),n.termination=e.consume(";")||e.error("No terminating ; for includes statement"),new includes_Includes({source:e.source,tokens:n});e.unconsume(t.index)}get type(){return"includes"}get target(){return m(this.tokens.target.value)}get includes(){return m(this.tokens.mixin.value)}}class typedef_Typedef extends Base{static parse(e){const t={},n=T(new typedef_Typedef({source:e.source,tokens:t}));if(t.base=e.consume("typedef"),t.base)return n.idlType=g(e,"typedef-type")||e.error("Typedef lacks a type"),t.name=e.consume("identifier")||e.error("Typedef lacks a name"),e.current=n.this,t.termination=e.consume(";")||e.error("Unterminated typedef, expected `;`"),n.this}get type(){return"typedef"}get name(){return m(this.tokens.name.value)}*validate(e){yield*this.idlType.validate(e)}}class callback_CallbackFunction extends Base{static parse(e,t){const n={base:t},r=T(new callback_CallbackFunction({source:e.source,tokens:n}));return n.name=e.consume("identifier")||e.error("Callback lacks a name"),e.current=r.this,n.assign=e.consume("=")||e.error("Callback lacks an assignment"),r.idlType=x(e)||e.error("Callback lacks a return type"),n.open=e.consume("(")||e.error("Callback lacks parentheses for arguments"),r.arguments=k(e),n.close=e.consume(")")||e.error("Unterminated callback"),n.termination=e.consume(";")||e.error("Unterminated callback, expected `;`"),r.this}get type(){return"callback"}get name(){return m(this.tokens.name.value)}*validate(e){yield*this.extAttrs.validate(e),yield*this.idlType.validate(e)}}class container_Container extends Base{static parse(e,t,{type:n,inheritable:r,allowedMembers:s}){const{tokens:i}=t;for(i.name=e.consume("identifier")||e.error("Missing name in "+t.type),e.current=t,t=T(t),r&&Object.assign(i,function(e){const t=e.consume(":");return t?{colon:t,inheritance:e.consume("identifier")||e.error("Inheritance lacks a type")}:{}}(e)),i.open=e.consume("{")||e.error("Bodyless "+n),t.members=[];;){if(i.close=e.consume("}"),i.close)return i.termination=e.consume(";")||e.error("Missing semicolon after "+n),t.this;const r=extended_attributes_ExtendedAttributes.parse(e);let a;for(const[t,...n]of s)if(a=T(t(e,...n)),a)break;a||e.error("Unknown member"),a.extAttrs=r,t.members.push(a.this)}}get partial(){return!!this.tokens.partial}get name(){return m(this.tokens.name.value)}get inheritance(){return this.tokens.inheritance?m(this.tokens.inheritance.value):null}*validate(e){for(const t of this.members)t.validate&&(yield*t.validate(e))}}class constant_Constant extends Base{static parse(e){const t={};if(t.base=e.consume("const"),!t.base)return;let n=h(e);if(!n){const t=e.consume("identifier")||e.error("Const lacks a type");n=new type_Type({source:e.source,tokens:{base:t}})}e.probe("?")&&e.error("Unexpected nullable constant type"),n.type="const-type",t.name=e.consume("identifier")||e.error("Const lacks a name"),t.assign=e.consume("=")||e.error("Const lacks value assignment"),t.value=y(e)||e.error("Const lacks a value"),t.termination=e.consume(";")||e.error("Unterminated const, expected `;`");const r=new constant_Constant({source:e.source,tokens:t});return T(r).idlType=n,r}get type(){return"const"}get name(){return m(this.tokens.name.value)}get value(){return b(this.tokens.value)}}class iterable_IterableLike extends Base{static parse(e){const t=e.position,n={},r=T(new iterable_IterableLike({source:e.source,tokens:n}));if(n.readonly=e.consume("readonly"),n.readonly||(n.async=e.consume("async")),n.base=n.readonly?e.consume("maplike","setlike"):n.async?e.consume("iterable"):e.consume("iterable","maplike","setlike"),!n.base)return void e.unconsume(t);const{type:s}=r,i="maplike"===s,a=i||"iterable"===s;n.open=e.consume("<")||e.error(`Missing less-than sign \`<\` in ${s} declaration`);const o=g(e)||e.error(`Missing a type argument in ${s} declaration`);return r.idlType=[o],a&&(o.tokens.separator=e.consume(","),o.tokens.separator?r.idlType.push(g(e)):i&&e.error(`Missing second type argument in ${s} declaration`)),n.close=e.consume(">")||e.error(`Missing greater-than sign \`>\` in ${s} declaration`),n.termination=e.consume(";")||e.error(`Missing semicolon after ${s} declaration`),r.this}get type(){return this.tokens.base.value}get readonly(){return!!this.tokens.readonly}get async(){return!!this.tokens.async}}class constructor_Constructor extends Base{static parse(e){const t=e.consume("constructor");if(!t)return;const n={base:t};n.open=e.consume("(")||e.error("No argument list in constructor");const r=k(e);n.close=e.consume(")")||e.error("Unterminated constructor"),n.termination=e.consume(";")||e.error("No semicolon after constructor");const s=new constructor_Constructor({source:e.source,tokens:n});return T(s).arguments=r,s}get type(){return"constructor"}*validate(e){this.idlType&&(yield*this.idlType.validate(e));for(const t of this.arguments)yield*t.validate(e)}}function P(e){const t=e.consume("static");if(t)return attribute_Attribute.parse(e,{special:t})||operation_Operation.parse(e,{special:t})||e.error("No body in static member")}class interface_Interface extends container_Container{static parse(e,t,{partial:n=null}={}){const r={partial:n,base:t};return container_Container.parse(e,new interface_Interface({source:e.source,tokens:r}),{type:"interface",inheritable:!n,allowedMembers:[[constant_Constant.parse],[constructor_Constructor.parse],[P],[v],[iterable_IterableLike.parse],[attribute_Attribute.parse],[operation_Operation.parse]]})}get type(){return"interface"}*validate(e){if(yield*this.extAttrs.validate(e),!this.partial&&this.extAttrs.every(e=>"Exposed"!==e.name)&&this.extAttrs.every(e=>"LegacyNoInterfaceObject"!==e.name)){const e="Interfaces must have `[Exposed]` extended attribute. To fix, add, for example, `[Exposed=Window]`. Please also consider carefully if your interface should also be exposed in a Worker scope. Refer to the [WebIDL spec section on Exposed](https://heycam.github.io/webidl/#Exposed) for more information.";yield i(this.tokens.name,this,"require-exposed",e,{autofix:w(this)})}const t=this.extAttrs.filter(e=>"Constructor"===e.name);for(const e of t){const t="Constructors should now be represented as a `constructor()` operation on the interface instead of `[Constructor]` extended attribute. Refer to the [WebIDL spec section on constructor operations](https://heycam.github.io/webidl/#idl-constructors) for more information.";yield i(e.tokens.name,this,"constructor-member",t,{autofix:j(this,e)})}if(this.extAttrs.some(e=>"Global"===e.name)){const e=this.extAttrs.filter(e=>"LegacyFactoryFunction"===e.name);for(const t of e){const e="Interfaces marked as `[Global]` cannot have factory functions.";yield i(t.tokens.name,this,"no-constructible-global",e)}const t=this.members.filter(e=>"constructor"===e.type);for(const e of t){const t="Interfaces marked as `[Global]` cannot have constructors.";yield i(e.tokens.base,this,"no-constructible-global",t)}}yield*super.validate(e),this.partial||(yield*function*(e,t){const n=new Set(o(t).map(e=>e.name)),r=e.partials.get(t.name)||[],s=e.mixinMap.get(t.name)||[];for(const e of[...r,...s]){const r=o(e);yield*a(r,n,e,t);for(const e of r)n.add(e.name)}function*a(e,t,n,r){for(const s of e){const{name:e}=s;if(e&&t.has(e)){const t=`The operation "${e}" has already been defined for the base interface "${r.name}" either in itself or in a mixin`;yield i(s.tokens.name,n,"no-cross-overload",t)}}}function o(e){return e.members.filter(({type:e})=>"operation"===e)}}(e,this))}}function j(e,t){return e=T(e),()=>{const n=_(e.extAttrs.tokens.open.trivia),r=e.members.length?_(A(e.members[0]).trivia):function(e){const t=_(e),n=t.includes("\t")?"\t":" ";return t+n}(n),s=constructor_Constructor.parse(new tokeniser_Tokeniser(`\n${r}constructor();`));s.extAttrs=new extended_attributes_ExtendedAttributes({}),T(s).arguments=t.arguments;const i=function(e,t){const n=e.slice().reverse().findIndex(t);return-1===n?n:e.length-n-1}(e.members,e=>"constructor"===e.type);e.members.splice(i+1,0,s);const{close:a}=e.tokens;a.trivia.includes("\n")||(a.trivia+="\n"+n);const{extAttrs:o}=e,c=o.indexOf(t),u=o.splice(c,1);o.length?o.length===c?o[c-1].tokens.separator=void 0:o[c].tokens.name.trivia.trim()||(o[c].tokens.name.trivia=u[0].tokens.name.trivia):o.tokens.open=o.tokens.close=void 0}}class mixin_Mixin extends container_Container{static parse(e,t,{partial:n}={}){const r={partial:n,base:t};if(r.mixin=e.consume("mixin"),r.mixin)return container_Container.parse(e,new mixin_Mixin({source:e.source,tokens:r}),{type:"interface mixin",allowedMembers:[[constant_Constant.parse],[v],[attribute_Attribute.parse,{noInherit:!0}],[operation_Operation.parse,{regular:!0}]]})}get type(){return"interface mixin"}}class field_Field extends Base{static parse(e){const t={},n=T(new field_Field({source:e.source,tokens:t}));return n.extAttrs=extended_attributes_ExtendedAttributes.parse(e),t.required=e.consume("required"),n.idlType=g(e,"dictionary-type")||e.error("Dictionary member lacks a type"),t.name=e.consume("identifier")||e.error("Dictionary member lacks a name"),n.default=default_Default.parse(e),t.required&&n.default&&e.error("Required member must not have a default"),t.termination=e.consume(";")||e.error("Unterminated dictionary member, expected `;`"),n.this}get type(){return"field"}get name(){return m(this.tokens.name.value)}get required(){return!!this.tokens.required}*validate(e){yield*this.idlType.validate(e)}}class dictionary_Dictionary extends container_Container{static parse(e,{partial:t}={}){const n={partial:t};if(n.base=e.consume("dictionary"),n.base)return container_Container.parse(e,new dictionary_Dictionary({source:e.source,tokens:n}),{type:"dictionary",inheritable:!t,allowedMembers:[[field_Field.parse]]})}get type(){return"dictionary"}}class namespace_Namespace extends container_Container{static parse(e,{partial:t}={}){const n={partial:t};if(n.base=e.consume("namespace"),n.base)return container_Container.parse(e,new namespace_Namespace({source:e.source,tokens:n}),{type:"namespace",allowedMembers:[[attribute_Attribute.parse,{noInherit:!0,readonly:!0}],[operation_Operation.parse,{regular:!0}]]})}get type(){return"namespace"}*validate(e){if(!this.partial&&this.extAttrs.every(e=>"Exposed"!==e.name)){const e="Namespaces must have [Exposed] extended attribute. To fix, add, for example, [Exposed=Window]. Please also consider carefully if your namespace should also be exposed in a Worker scope. Refer to the [WebIDL spec section on Exposed](https://heycam.github.io/webidl/#Exposed) for more information.";yield i(this.tokens.name,this,"require-exposed",e,{autofix:w(this)})}yield*super.validate(e)}}class callback_interface_CallbackInterface extends container_Container{static parse(e,t,{partial:n=null}={}){const r={callback:t};if(r.base=e.consume("interface"),r.base)return container_Container.parse(e,new callback_interface_CallbackInterface({source:e.source,tokens:r}),{type:"callback interface",inheritable:!n,allowedMembers:[[constant_Constant.parse],[operation_Operation.parse,{regular:!0}]]})}get type(){return"callback interface"}}function L(e,t){const n=e.source;function r(t){e.error(t)}function s(...t){return e.consume(...t)}function i(t){const n=s("interface");if(n)return mixin_Mixin.parse(e,n,t)||interface_Interface.parse(e,n,t)||r("Interface has no proper body")}function a(){return function(){const t=s("callback");if(t)return e.probe("interface")?callback_interface_CallbackInterface.parse(e,t):callback_CallbackFunction.parse(e,t)}()||i()||function(){const t=s("partial");if(t)return dictionary_Dictionary.parse(e,{partial:t})||i({partial:t})||namespace_Namespace.parse(e,{partial:t})||r("Partial doesn't apply to anything")}()||dictionary_Dictionary.parse(e)||enum_Enum.parse(e)||typedef_Typedef.parse(e)||includes_Includes.parse(e)||namespace_Namespace.parse(e)}const o=function(){if(!n.length)return[];const i=[];for(;;){const t=extended_attributes_ExtendedAttributes.parse(e),n=a();if(!n){t.length&&r("Stray extended attributes");break}T(n).extAttrs=t,i.push(n)}const o=s("eof");return t.concrete&&i.push(o),i}();return e.position<n.length&&r("Unrecognised tokens"),o}function q(e,t={}){const n=new tokeniser_Tokeniser(e);return void 0!==t.sourceName&&(n.source.name=t.sourceName),L(n,t)}function B(e){return e}const F={wrap:e=>e.join(""),trivia:B,name:B,reference:B,type:B,generic:B,nameless:B,inheritance:B,definition:B,extendedAttribute:B,extendedAttributeReference:B};function $(e,{templates:t=F}={}){function n(e,{unescaped:n,context:r}){return n||(n=e.startsWith("_")?e.slice(1):e),t.reference(e,n,r)}function r(e,n=B,...r){if(!e)return"";const s=n(e.value,...r);return t.wrap([t.trivia(e.trivia),s])}function s(e,t){return r(e,n,{context:t})}function i(e,n){return r(e,t.name,n)}function a(e){if(e.union||e.generic)return t.wrap([r(e.tokens.base,t.generic),r(e.tokens.open),...e.subtype.map(o),r(e.tokens.close)]);const s=e.tokens.prefix||e.tokens.base,i=e.tokens.prefix?[e.tokens.prefix.value,t.trivia(e.tokens.base.trivia)]:[],a=n(t.wrap([...i,e.tokens.base.value,r(e.tokens.postfix)]),{unescaped:e.idlType,context:e});return t.wrap([t.trivia(s.trivia),a])}function o(e){return t.wrap([d(e.extAttrs),a(e),r(e.tokens.nullable),r(e.tokens.separator)])}function c(e){return e?t.wrap([r(e.tokens.assign),...e.expression.map(e=>r(e))]):""}function u(e){return t.wrap([d(e.extAttrs),r(e.tokens.optional),t.type(o(e.idlType)),r(e.tokens.variadic),i(e.tokens.name,{data:e}),c(e.default),r(e.tokens.separator)])}function l(e){return t.wrap([r(e.tokens.value),r(e.tokens.separator)])}function p(e){const{rhsType:n}=e.params;return t.wrap([t.trivia(e.tokens.name.trivia),t.extendedAttribute(t.wrap([t.extendedAttributeReference(e.name),r(e.params.tokens.assign),s(e.params.tokens.secondaryName,e),r(e.params.tokens.open),...e.params.list?e.params.list.map("identifier-list"===n?n=>function(e,n){return t.wrap([s(e.tokens.value,n),r(e.tokens.separator)])}(n,e):n&&n.endsWith("-list")?l:u):[],r(e.params.tokens.close)])),r(e.tokens.separator)])}function d(e){return e.length?t.wrap([r(e.tokens.open),...e.map(p),r(e.tokens.close)]):""}function m(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.callback),r(e.tokens.partial),r(e.tokens.base),r(e.tokens.mixin),i(e.tokens.name,{data:e}),(s=e,s.tokens.inheritance?t.wrap([r(s.tokens.colon),t.trivia(s.tokens.inheritance.trivia),t.inheritance(n(s.tokens.inheritance.value,{context:s}))]):""),r(e.tokens.open),b(e.members,e),r(e.tokens.close),r(e.tokens.termination)]),{data:e});var s}function f(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.readonly),r(e.tokens.async),r(e.tokens.base,t.generic),r(e.tokens.open),t.wrap(e.idlType.map(o)),r(e.tokens.close),r(e.tokens.termination)]),{data:e,parent:n})}t=Object.assign({},F,t);const y={interface:m,"interface mixin":m,namespace:m,operation:function(e,n){const s=e.idlType?[t.type(o(e.idlType)),i(e.tokens.name,{data:e,parent:n}),r(e.tokens.open),t.wrap(e.arguments.map(u)),r(e.tokens.close)]:[];return t.definition(t.wrap([d(e.extAttrs),e.tokens.name?r(e.tokens.special):r(e.tokens.special,t.nameless,{data:e,parent:n}),...s,r(e.tokens.termination)]),{data:e,parent:n})},attribute:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.special),r(e.tokens.readonly),r(e.tokens.base),t.type(o(e.idlType)),i(e.tokens.name,{data:e,parent:n}),r(e.tokens.termination)]),{data:e,parent:n})},constructor:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base,t.nameless,{data:e,parent:n}),r(e.tokens.open),t.wrap(e.arguments.map(u)),r(e.tokens.close),r(e.tokens.termination)]),{data:e,parent:n})},dictionary:m,field:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.required),t.type(o(e.idlType)),i(e.tokens.name,{data:e,parent:n}),c(e.default),r(e.tokens.termination)]),{data:e,parent:n})},const:function(e,n){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),t.type(o(e.idlType)),i(e.tokens.name,{data:e,parent:n}),r(e.tokens.assign),r(e.tokens.value),r(e.tokens.termination)]),{data:e,parent:n})},typedef:function(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),t.type(o(e.idlType)),i(e.tokens.name,{data:e}),r(e.tokens.termination)]),{data:e})},includes:function(e){return t.definition(t.wrap([d(e.extAttrs),s(e.tokens.target,e),r(e.tokens.includes),s(e.tokens.mixin,e),r(e.tokens.termination)]),{data:e})},callback:function(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),i(e.tokens.name,{data:e}),r(e.tokens.assign),t.type(o(e.idlType)),r(e.tokens.open),...e.arguments.map(u),r(e.tokens.close),r(e.tokens.termination)]),{data:e})},enum:function(e){return t.definition(t.wrap([d(e.extAttrs),r(e.tokens.base),i(e.tokens.name,{data:e}),r(e.tokens.open),b(e.values,e),r(e.tokens.close),r(e.tokens.termination)]),{data:e})},"enum-value":function(e,n){return t.wrap([t.trivia(e.tokens.value.trivia),t.definition(t.wrap(['"',t.name(e.value,{data:e,parent:n}),'"']),{data:e,parent:n}),r(e.tokens.separator)])},iterable:f,maplike:f,setlike:f,"callback interface":m,eof:function(e){return t.trivia(e.trivia)}};function b(e,n){if(!e)return;const r=e.map(e=>function(e,t){if(!y[e.type])throw new Error(`Type "${e.type}" is unsupported`);return y[e.type](e,t)}(e,n));return t.wrap(r)}return b(e)}function W(e,t){const n=new Map,r=e.filter(e=>"includes"===e.type);for(const e of r){const r=t.get(e.includes);if(!r)continue;const s=n.get(e.target);s?s.push(r):n.set(e.target,[r])}return n}function*U(e){const t=function(e){const t=new Map,n=new Set,r=new Map;for(const s of e)if(s.partial){const e=r.get(s.name);e?e.push(s):r.set(s.name,[s])}else s.name&&(t.has(s.name)?n.add(s):t.set(s.name,s));return{all:e,unique:t,partials:r,duplicates:n,mixinMap:W(e,t),cache:{typedefIncludesDictionary:new WeakMap,dictionaryIncludesRequiredField:new WeakMap}}}(e);for(const e of t.all)e.validate&&(yield*e.validate(t));yield*function*({unique:e,duplicates:t}){for(const n of t){const{name:t}=n,r=`The name "${t}" of type "${e.get(t).type}" was already seen`;yield i(n.tokens.name,n,"no-duplicate",r)}}(t)}function S(e){return[...U((t=e,t.flat?t.flat():[].concat(...t)))];var t}}])}));
//# sourceMappingURL=webidl2.js.map

1

lib/productions/attribute.js

@@ -54,4 +54,5 @@ import { Base } from "./base.js";

*validate(defs) {
yield* this.extAttrs.validate(defs);
yield* this.idlType.validate(defs);
}
}

2

lib/productions/base.js

@@ -12,3 +12,3 @@ // @ts-check

source: { value: source },
tokens: { value: tokens },
tokens: { value: tokens, writable: true },
parent: { value: null, writable: true },

@@ -15,0 +15,0 @@ this: { value: this } // useful when escaping from proxy

1

lib/productions/callback.js

@@ -30,4 +30,5 @@ import { Base } from "./base.js";

*validate(defs) {
yield* this.extAttrs.validate(defs);
yield* this.idlType.validate(defs);
}
}

44

lib/productions/extended-attributes.js

@@ -20,2 +20,17 @@ import { Base } from "./base.js";

const shouldBeLegacyPrefixed = [
"NoInterfaceObject",
"LenientSetter",
"LenientThis",
"TreatNonObjectAsNull",
"Unforgeable",
];
const renamedLegacies = new Map([
...shouldBeLegacyPrefixed.map(name => [name, `Legacy${name}`]),
["NamedConstructor", "LegacyFactoryFunction"],
["OverrideBuiltins", "LegacyOverrideBuiltIns"],
["TreatNullAs", "LegacyNullToEmptyString"],
]);
/**

@@ -51,3 +66,3 @@ * This will allow a set of extended attribute values to be parsed.

extAttrListItems(tokeniser) :
// [NamedConstructor=Audio(DOMString src)] or [Constructor(DOMString str)]
// [LegacyFactoryFunction=Audio(DOMString src)] or [Constructor(DOMString str)]
argument_list(tokeniser);

@@ -120,4 +135,5 @@ tokens.close = tokeniser.consume(")") || tokeniser.error("Unexpected token in extended attribute argument list");

*validate(defs) {
if (this.name === "NoInterfaceObject") {
const message = `\`[NoInterfaceObject]\` extended attribute is an \
const { name } = this;
if (name === "LegacyNoInterfaceObject") {
const message = `\`[LegacyNoInterfaceObject]\` extended attribute is an \
undesirable feature that may be removed from Web IDL in the future. Refer to the \

@@ -127,2 +143,11 @@ [relevant upstream PR](https://github.com/heycam/webidl/pull/609) for more \

yield validationError(this.tokens.name, this, "no-nointerfaceobject", message, { level: "warning" });
} else if (renamedLegacies.has(name)) {
const message = `\`[${name}]\` extended attribute is a legacy feature \
that is now renamed to \`[${renamedLegacies.get(name)}]\`. Refer to the \
[relevant upstream PR](https://github.com/heycam/webidl/pull/870) for more \
information.`;
yield validationError(this.tokens.name, this, "renamed-legacy", message, {
level: "warning",
autofix: renameLegacyExtendedAttribute(this)
});
}

@@ -135,2 +160,15 @@ for (const arg of this.arguments) {

/**
* @param {SimpleExtendedAttribute} extAttr
*/
function renameLegacyExtendedAttribute(extAttr) {
return () => {
const { name } = extAttr;
extAttr.tokens.name.value = renamedLegacies.get(name);
if (name === "TreatNullAs") {
extAttr.params.tokens = {};
}
};
}
// Note: we parse something simpler than the official syntax. It's all that ever

@@ -137,0 +175,0 @@ // seems to be used

11

lib/productions/interface.js

@@ -11,2 +11,3 @@ import { Container } from "./container.js";

import { Tokeniser } from "../tokeniser.js";
import { ExtendedAttributes } from "./extended-attributes.js";

@@ -55,3 +56,3 @@ /**

this.extAttrs.every(extAttr => extAttr.name !== "Exposed") &&
this.extAttrs.every(extAttr => extAttr.name !== "NoInterfaceObject")
this.extAttrs.every(extAttr => extAttr.name !== "LegacyNoInterfaceObject")
) {

@@ -80,5 +81,5 @@ const message = `Interfaces must have \`[Exposed]\` extended attribute. \

if (isGlobal) {
const namedConstructors = this.extAttrs.filter(extAttr => extAttr.name === "NamedConstructor");
for (const named of namedConstructors) {
const message = `Interfaces marked as \`[Global]\` cannot have named constructors.`;
const factoryFunctions = this.extAttrs.filter(extAttr => extAttr.name === "LegacyFactoryFunction");
for (const named of factoryFunctions) {
const message = `Interfaces marked as \`[Global]\` cannot have factory functions.`;
yield validationError(named.tokens.name, this, "no-constructible-global", message);

@@ -109,3 +110,3 @@ }

const constructorOp = Constructor.parse(new Tokeniser(`\n${memberIndent}constructor();`));
constructorOp.extAttrs = [];
constructorOp.extAttrs = new ExtendedAttributes({});
autoParenter(constructorOp).arguments = constructorExtAttr.arguments;

@@ -112,0 +113,0 @@

2

lib/productions/iterable.js

@@ -26,3 +26,3 @@ import { Base } from "./base.js";

const { type } = ret;
const secondTypeRequired = type === "maplike" || ret.async;
const secondTypeRequired = type === "maplike";
const secondTypeAllowed = secondTypeRequired || type === "iterable";

@@ -29,0 +29,0 @@

4

lib/productions/type.js

@@ -6,2 +6,3 @@ import { Base } from "./base.js";

import { idlTypeIncludesDictionary } from "../validators/helpers.js";
import { ExtendedAttributes } from "./extended-attributes.js";

@@ -123,3 +124,3 @@ /**

Object.defineProperty(this, "subtype", { value: [], writable: true });
this.extAttrs = [];
this.extAttrs = new ExtendedAttributes({});
}

@@ -153,2 +154,3 @@

*validate(defs) {
yield* this.extAttrs.validate(defs);
/*

@@ -155,0 +157,0 @@ * If a union is nullable, its subunions cannot include a dictionary

16

package.json
{
"name": "webidl2",
"description": "A WebIDL Parser",
"version": "23.11.0",
"version": "23.12.0",
"contributors": [

@@ -15,9 +15,9 @@ "Robin Berjon <robin@berjon.com> (https://berjon.com)",

"eslint": "^6.8.0",
"eslint-plugin-import": "^2.20.1",
"expect": "^25.1.0",
"jsondiffpatch": "0.3.11",
"mocha": "^7.0.1",
"terser-webpack-plugin": "^2.3.5",
"typescript": "^3.8.2",
"webpack": "^4.41.6",
"eslint-plugin-import": "^2.20.2",
"expect": "^25.5.0",
"jsondiffpatch": "^0.4.1",
"mocha": "^7.1.2",
"terser-webpack-plugin": "^2.3.6",
"typescript": "^3.8.3",
"webpack": "^4.43.0",
"webpack-cli": "^3.3.11"

@@ -24,0 +24,0 @@ },

10

README.md

@@ -685,3 +685,3 @@

"extAttrs": [{
"name": "TreatNullAs",
"name": "PutForwards",
"arguments": [...],

@@ -691,3 +691,3 @@ "type": "extended-attribute",

"type": "identifier",
"value": "EmptyString"
"value": "foo"
},

@@ -708,3 +708,3 @@ "parent": { ... }

attribute has a signature (e.g. `[Foo()]`) or if its right-hand side does (e.g.
`[NamedConstructor=Name(DOMString blah)]`).
`[LegacyFactoryFunction=Name(DOMString blah)]`).
* `type`: Always `"extended-attribute"`.

@@ -738,3 +738,3 @@ * `rhs`: If there is a right-hand side, this will capture its `type` and `value`. The

### `iterable<>`, `maplike<>`, `setlike<>` declarations
### `iterable<>`, `async iterable<>`, `maplike<>`, and `setlike<>` declarations

@@ -748,2 +748,3 @@ These appear as members of interfaces that look like this:

"readonly": false, // only for maplike and setlike
"async": false, // iterable can be async
"extAttrs": [],

@@ -759,2 +760,3 @@ "parent": { ... }

* `readonly`: `true` if the maplike or setlike is declared as read only.
* `async`: `true` if the type is async iterable.
* `extAttrs`: An array of [extended attributes](#extended-attributes).

@@ -761,0 +763,0 @@ * `parent`: The container of this type as an Object.

dist/webidl2.js.map

Sorry, the diff of this file is not supported yet

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