/*
 * Copyright JS Foundation and other contributors, https://js.foundation/
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
(function webpackUniversalModuleDefinition(root,factory){if(typeof exports==='object'&&typeof module==='object')
module.exports=factory();else if(typeof define==='function'&&define.amd)
define([],factory);else if(typeof exports==='object')
exports["esprima"]=factory();else
root["esprima"]=factory();})(this,function(){return(function(modules){var installedModules={};function __webpack_require__(moduleId){if(installedModules[moduleId])
return installedModules[moduleId].exports;var module=installedModules[moduleId]={exports:{},id:moduleId,loaded:false
};modules[moduleId].call(module.exports,module,module.exports,__webpack_require__);module.loaded=true;return module.exports;}
__webpack_require__.m=modules;__webpack_require__.c=installedModules;__webpack_require__.p="";return __webpack_require__(0);})
([function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const comment_handler_1=__webpack_require__(1);const jsx_parser_1=__webpack_require__(3);const parser_1=__webpack_require__(8);const tokenizer_1=__webpack_require__(15);function parse(code,options,delegate){let commentHandler=null;const proxyDelegate=(node,metadata)=>{if(delegate){delegate(node,metadata);}
if(commentHandler){commentHandler.visit(node,metadata);}};let parserDelegate=(typeof delegate==='function')?proxyDelegate:null;let collectComment=false;if(options){collectComment=(typeof options.comment==='boolean'&&options.comment);const attachComment=(typeof options.attachComment==='boolean'&&options.attachComment);if(collectComment||attachComment){commentHandler=new comment_handler_1.CommentHandler();commentHandler.attach=attachComment;options.comment=true;parserDelegate=proxyDelegate;}}
let isModule=false;if(options&&typeof options.sourceType==='string'){isModule=(options.sourceType==='module');}
let parser;if(options&&typeof options.jsx==='boolean'&&options.jsx){parser=new jsx_parser_1.JSXParser(code,options,parserDelegate);}
else{parser=new parser_1.Parser(code,options,parserDelegate);}
const program=isModule?parser.parseModule():parser.parseScript();const ast=program;if(collectComment&&commentHandler){ast.comments=commentHandler.comments;}
if(parser.config.tokens){ast.tokens=parser.tokens;}
if(parser.config.tolerant){ast.errors=parser.errorHandler.errors;}
return ast;}
exports.parse=parse;function parseModule(code,options,delegate){const parsingOptions=options||{};parsingOptions.sourceType='module';return parse(code,parsingOptions,delegate);}
exports.parseModule=parseModule;function parseScript(code,options,delegate){const parsingOptions=options||{};parsingOptions.sourceType='script';return parse(code,parsingOptions,delegate);}
exports.parseScript=parseScript;function tokenize(code,options,delegate){const tokenizer=new tokenizer_1.Tokenizer(code,options);let tokens;tokens=[];try{while(true){let token=tokenizer.getNextToken();if(!token){break;}
if(delegate){token=delegate(token);}
tokens.push(token);}}
catch(e){tokenizer.errorHandler.tolerate(e);}
if(tokenizer.errorHandler.tolerant){tokens.errors=tokenizer.errors();}
return tokens;}
exports.tokenize=tokenize;var syntax_1=__webpack_require__(2);exports.Syntax=syntax_1.Syntax;exports.version='4.0.0-dev';},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const syntax_1=__webpack_require__(2);class CommentHandler{constructor(){this.attach=false;this.comments=[];this.stack=[];this.leading=[];this.trailing=[];}
insertInnerComments(node,metadata){
if(node.type===syntax_1.Syntax.BlockStatement&&node.body.length===0){const innerComments=[];for(let i=this.leading.length-1;i>=0;--i){const entry=this.leading[i];if(metadata.end.offset>=entry.start){innerComments.unshift(entry.comment);this.leading.splice(i,1);this.trailing.splice(i,1);}}
if(innerComments.length){node.innerComments=innerComments;}}}
findTrailingComments(metadata){let trailingComments=[];if(this.trailing.length>0){for(let i=this.trailing.length-1;i>=0;--i){const entry=this.trailing[i];if(entry.start>=metadata.end.offset){trailingComments.unshift(entry.comment);}}
this.trailing.length=0;return trailingComments;}
const last=this.stack[this.stack.length-1];if(last&&last.node.trailingComments){const firstComment=last.node.trailingComments[0];if(firstComment&&firstComment.range[0]>=metadata.end.offset){trailingComments=last.node.trailingComments;delete last.node.trailingComments;}}
return trailingComments;}
findLeadingComments(metadata){const leadingComments=[];let target;while(this.stack.length>0){const entry=this.stack[this.stack.length-1];if(entry&&entry.start>=metadata.start.offset){target=entry.node;this.stack.pop();}
else{break;}}
if(target){const count=target.leadingComments?target.leadingComments.length:0;for(let i=count-1;i>=0;--i){const comment=target.leadingComments[i];if(comment.range[1]<=metadata.start.offset){leadingComments.unshift(comment);target.leadingComments.splice(i,1);}}
if(target.leadingComments&&target.leadingComments.length===0){delete target.leadingComments;}
return leadingComments;}
for(let i=this.leading.length-1;i>=0;--i){const entry=this.leading[i];if(entry.start<=metadata.start.offset){leadingComments.unshift(entry.comment);this.leading.splice(i,1);}}
return leadingComments;}
visitNode(node,metadata){if(node.type===syntax_1.Syntax.Program&&node.body.length>0){return;}
this.insertInnerComments(node,metadata);const trailingComments=this.findTrailingComments(metadata);const leadingComments=this.findLeadingComments(metadata);if(leadingComments.length>0){node.leadingComments=leadingComments;}
if(trailingComments.length>0){node.trailingComments=trailingComments;}
this.stack.push({node:node,start:metadata.start.offset});}
visitComment(node,metadata){const type=(node.type[0]==='L')?'Line':'Block';const comment={type:type,value:node.value};if(node.range){comment.range=node.range;}
if(node.loc){comment.loc=node.loc;}
this.comments.push(comment);if(this.attach){const entry={comment:{type:type,value:node.value,range:[metadata.start.offset,metadata.end.offset]},start:metadata.start.offset};if(node.loc){entry.comment.loc=node.loc;}
node.type=type;this.leading.push(entry);this.trailing.push(entry);}}
visit(node,metadata){if(node.type==='LineComment'){this.visitComment(node,metadata);}
else if(node.type==='BlockComment'){this.visitComment(node,metadata);}
else if(this.attach){this.visitNode(node,metadata);}}}
exports.CommentHandler=CommentHandler;},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.Syntax={AssignmentExpression:'AssignmentExpression',AssignmentPattern:'AssignmentPattern',ArrayExpression:'ArrayExpression',ArrayPattern:'ArrayPattern',ArrowFunctionExpression:'ArrowFunctionExpression',AwaitExpression:'AwaitExpression',BlockStatement:'BlockStatement',BinaryExpression:'BinaryExpression',BreakStatement:'BreakStatement',CallExpression:'CallExpression',CatchClause:'CatchClause',ClassBody:'ClassBody',ClassDeclaration:'ClassDeclaration',ClassExpression:'ClassExpression',ConditionalExpression:'ConditionalExpression',ContinueStatement:'ContinueStatement',DoWhileStatement:'DoWhileStatement',DebuggerStatement:'DebuggerStatement',EmptyStatement:'EmptyStatement',ExportAllDeclaration:'ExportAllDeclaration',ExportDefaultDeclaration:'ExportDefaultDeclaration',ExportNamedDeclaration:'ExportNamedDeclaration',ExportSpecifier:'ExportSpecifier',ExpressionStatement:'ExpressionStatement',ForStatement:'ForStatement',ForOfStatement:'ForOfStatement',ForInStatement:'ForInStatement',FunctionDeclaration:'FunctionDeclaration',FunctionExpression:'FunctionExpression',Identifier:'Identifier',IfStatement:'IfStatement',Import:'Import',ImportDeclaration:'ImportDeclaration',ImportDefaultSpecifier:'ImportDefaultSpecifier',ImportNamespaceSpecifier:'ImportNamespaceSpecifier',ImportSpecifier:'ImportSpecifier',Literal:'Literal',LabeledStatement:'LabeledStatement',LogicalExpression:'LogicalExpression',MemberExpression:'MemberExpression',MetaProperty:'MetaProperty',MethodDefinition:'MethodDefinition',NewExpression:'NewExpression',ObjectExpression:'ObjectExpression',ObjectPattern:'ObjectPattern',Program:'Program',Property:'Property',RestElement:'RestElement',ReturnStatement:'ReturnStatement',SequenceExpression:'SequenceExpression',SpreadElement:'SpreadElement',Super:'Super',SwitchCase:'SwitchCase',SwitchStatement:'SwitchStatement',TaggedTemplateExpression:'TaggedTemplateExpression',TemplateElement:'TemplateElement',TemplateLiteral:'TemplateLiteral',ThisExpression:'ThisExpression',ThrowStatement:'ThrowStatement',TryStatement:'TryStatement',UnaryExpression:'UnaryExpression',UpdateExpression:'UpdateExpression',VariableDeclaration:'VariableDeclaration',VariableDeclarator:'VariableDeclarator',WhileStatement:'WhileStatement',WithStatement:'WithStatement',YieldExpression:'YieldExpression'};},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const character_1=__webpack_require__(4);const JSXNode=__webpack_require__(5);const jsx_syntax_1=__webpack_require__(6);const Node=__webpack_require__(7);const parser_1=__webpack_require__(8);const token_1=__webpack_require__(13);const xhtml_entities_1=__webpack_require__(14);token_1.TokenName[100]='JSXIdentifier';token_1.TokenName[101]='JSXText';function getQualifiedElementName(elementName){let qualifiedName;switch(elementName.type){case jsx_syntax_1.JSXSyntax.JSXIdentifier:const id=elementName;qualifiedName=id.name;break;case jsx_syntax_1.JSXSyntax.JSXNamespacedName:const ns=elementName;qualifiedName=getQualifiedElementName(ns.namespace)+':'+
getQualifiedElementName(ns.name);break;case jsx_syntax_1.JSXSyntax.JSXMemberExpression:const expr=elementName;qualifiedName=getQualifiedElementName(expr.object)+'.'+
getQualifiedElementName(expr.property);break;default:break;}
return qualifiedName;}
class JSXParser extends parser_1.Parser{constructor(code,options,delegate){super(code,options,delegate);}
parsePrimaryExpression(){return this.match('<')?this.parseJSXRoot():super.parsePrimaryExpression();}
startJSX(){this.scanner.index=this.startMarker.index;this.scanner.lineNumber=this.startMarker.line;this.scanner.lineStart=this.startMarker.index-this.startMarker.column;}
finishJSX(){this.nextToken();}
reenterJSX(){this.startJSX();this.expectJSX('}');if(this.config.tokens){this.tokens.pop();}}
createJSXNode(){this.collectComments();return{index:this.scanner.index,line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart};}
createJSXChildNode(){return{index:this.scanner.index,line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart};}
scanXHTMLEntity(quote){let result='&';let valid=true;let terminated=false;let numeric=false;let hex=false;while(!this.scanner.eof()&&valid&&!terminated){const ch=this.scanner.source[this.scanner.index];if(ch===quote){break;}
terminated=(ch===';');result+=ch;++this.scanner.index;if(!terminated){switch(result.length){case 2:numeric=(ch==='#');break;case 3:if(numeric){hex=(ch==='x');valid=hex||character_1.Character.isDecimalDigit(ch.charCodeAt(0));numeric=numeric&&!hex;}
break;default:valid=valid&&!(numeric&&!character_1.Character.isDecimalDigit(ch.charCodeAt(0)));valid=valid&&!(hex&&!character_1.Character.isHexDigit(ch.charCodeAt(0)));break;}}}
if(valid&&terminated&&result.length>2){const str=result.substr(1,result.length-2);if(numeric&&str.length>1){result=String.fromCharCode(parseInt(str.substr(1),10));}
else if(hex&&str.length>2){result=String.fromCharCode(parseInt('0'+str.substr(1),16));}
else if(!numeric&&!hex&&xhtml_entities_1.XHTMLEntities[str]){result=xhtml_entities_1.XHTMLEntities[str];}}
return result;}
lexJSX(){const cp=this.scanner.source.charCodeAt(this.scanner.index);if(cp===60||cp===62||cp===47||cp===58||cp===61||cp===123||cp===125){const value=this.scanner.source[this.scanner.index++];return{type:7,value:value,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:this.scanner.index-1,end:this.scanner.index};}
if(cp===34||cp===39){const start=this.scanner.index;const quote=this.scanner.source[this.scanner.index++];let str='';while(!this.scanner.eof()){const ch=this.scanner.source[this.scanner.index++];if(ch===quote){break;}
else if(ch==='&'){str+=this.scanXHTMLEntity(quote);}
else{str+=ch;}}
return{type:8,value:str,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:start,end:this.scanner.index};}
if(cp===46){const n1=this.scanner.source.charCodeAt(this.scanner.index+1);const n2=this.scanner.source.charCodeAt(this.scanner.index+2);const value=(n1===46&&n2===46)?'...':'.';const start=this.scanner.index;this.scanner.index+=value.length;return{type:7,value:value,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:start,end:this.scanner.index};}
if(cp===96){return{type:10,value:'',lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:this.scanner.index,end:this.scanner.index};}
if(character_1.Character.isIdentifierStart(cp)&&(cp!==92)){const start=this.scanner.index;++this.scanner.index;while(!this.scanner.eof()){const ch=this.scanner.source.charCodeAt(this.scanner.index);if(character_1.Character.isIdentifierPart(ch)&&(ch!==92)){++this.scanner.index;}
else if(ch===45){++this.scanner.index;}
else{break;}}
const id=this.scanner.source.slice(start,this.scanner.index);return{type:100,value:id,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:start,end:this.scanner.index};}
return this.scanner.lex();}
nextJSXToken(){this.collectComments();this.startMarker.index=this.scanner.index;this.startMarker.line=this.scanner.lineNumber;this.startMarker.column=this.scanner.index-this.scanner.lineStart;const token=this.lexJSX();this.lastMarker.index=this.scanner.index;this.lastMarker.line=this.scanner.lineNumber;this.lastMarker.column=this.scanner.index-this.scanner.lineStart;if(this.config.tokens){this.tokens.push(this.convertToken(token));}
return token;}
nextJSXText(){this.startMarker.index=this.scanner.index;this.startMarker.line=this.scanner.lineNumber;this.startMarker.column=this.scanner.index-this.scanner.lineStart;const start=this.scanner.index;let text='';while(!this.scanner.eof()){const ch=this.scanner.source[this.scanner.index];if(ch==='{'||ch==='<'){break;}
++this.scanner.index;text+=ch;if(character_1.Character.isLineTerminator(ch.charCodeAt(0))){++this.scanner.lineNumber;if(ch==='\r'&&this.scanner.source[this.scanner.index]==='\n'){++this.scanner.index;}
this.scanner.lineStart=this.scanner.index;}}
this.lastMarker.index=this.scanner.index;this.lastMarker.line=this.scanner.lineNumber;this.lastMarker.column=this.scanner.index-this.scanner.lineStart;const token={type:101,value:text,lineNumber:this.scanner.lineNumber,lineStart:this.scanner.lineStart,start:start,end:this.scanner.index};if((text.length>0)&&this.config.tokens){this.tokens.push(this.convertToken(token));}
return token;}
peekJSXToken(){const state=this.scanner.saveState();this.scanner.scanComments();const next=this.lexJSX();this.scanner.restoreState(state);return next;}
expectJSX(value){const token=this.nextJSXToken();if(token.type!==7||token.value!==value){this.throwUnexpectedToken(token);}}
matchJSX(value){const next=this.peekJSXToken();return next.type===7&&next.value===value;}
parseJSXIdentifier(){const node=this.createJSXNode();const token=this.nextJSXToken();if(token.type!==100){this.throwUnexpectedToken(token);}
return this.finalize(node,new JSXNode.JSXIdentifier(token.value));}
parseJSXElementName(){const node=this.createJSXNode();let elementName=this.parseJSXIdentifier();if(this.matchJSX(':')){const namespace=elementName;this.expectJSX(':');const name=this.parseJSXIdentifier();elementName=this.finalize(node,new JSXNode.JSXNamespacedName(namespace,name));}
else if(this.matchJSX('.')){while(this.matchJSX('.')){const object=elementName;this.expectJSX('.');const property=this.parseJSXIdentifier();elementName=this.finalize(node,new JSXNode.JSXMemberExpression(object,property));}}
return elementName;}
parseJSXAttributeName(){const node=this.createJSXNode();let attributeName;const identifier=this.parseJSXIdentifier();if(this.matchJSX(':')){const namespace=identifier;this.expectJSX(':');const name=this.parseJSXIdentifier();attributeName=this.finalize(node,new JSXNode.JSXNamespacedName(namespace,name));}
else{attributeName=identifier;}
return attributeName;}
parseJSXStringLiteralAttribute(){const node=this.createJSXNode();const token=this.nextJSXToken();if(token.type!==8){this.throwUnexpectedToken(token);}
const raw=this.getTokenRaw(token);return this.finalize(node,new Node.Literal(token.value,raw));}
parseJSXExpressionAttribute(){const node=this.createJSXNode();this.expectJSX('{');this.finishJSX();if(this.match('}')){this.tolerateError('JSX attributes must only be assigned a non-empty expression');}
const expression=this.parseAssignmentExpression();this.reenterJSX();return this.finalize(node,new JSXNode.JSXExpressionContainer(expression));}
parseJSXAttributeValue(){return this.matchJSX('{')?this.parseJSXExpressionAttribute():this.matchJSX('<')?this.parseJSXElement():this.parseJSXStringLiteralAttribute();}
parseJSXNameValueAttribute(){const node=this.createJSXNode();const name=this.parseJSXAttributeName();let value=null;if(this.matchJSX('=')){this.expectJSX('=');value=this.parseJSXAttributeValue();}
return this.finalize(node,new JSXNode.JSXAttribute(name,value));}
parseJSXSpreadAttribute(){const node=this.createJSXNode();this.expectJSX('{');this.expectJSX('...');this.finishJSX();const argument=this.parseAssignmentExpression();this.reenterJSX();return this.finalize(node,new JSXNode.JSXSpreadAttribute(argument));}
parseJSXAttributes(){const attributes=[];while(!this.matchJSX('/')&&!this.matchJSX('>')){const attribute=this.matchJSX('{')?this.parseJSXSpreadAttribute():this.parseJSXNameValueAttribute();attributes.push(attribute);}
return attributes;}
parseJSXOpeningElement(){const node=this.createJSXNode();this.expectJSX('<');const name=this.parseJSXElementName();const attributes=this.parseJSXAttributes();const selfClosing=this.matchJSX('/');if(selfClosing){this.expectJSX('/');}
this.expectJSX('>');return this.finalize(node,new JSXNode.JSXOpeningElement(name,selfClosing,attributes));}
parseJSXBoundaryElement(){const node=this.createJSXNode();this.expectJSX('<');if(this.matchJSX('/')){this.expectJSX('/');const elementName=this.parseJSXElementName();this.expectJSX('>');return this.finalize(node,new JSXNode.JSXClosingElement(elementName));}
const name=this.parseJSXElementName();const attributes=this.parseJSXAttributes();const selfClosing=this.matchJSX('/');if(selfClosing){this.expectJSX('/');}
this.expectJSX('>');return this.finalize(node,new JSXNode.JSXOpeningElement(name,selfClosing,attributes));}
parseJSXEmptyExpression(){const node=this.createJSXChildNode();this.collectComments();this.lastMarker.index=this.scanner.index;this.lastMarker.line=this.scanner.lineNumber;this.lastMarker.column=this.scanner.index-this.scanner.lineStart;return this.finalize(node,new JSXNode.JSXEmptyExpression());}
parseJSXExpressionContainer(){const node=this.createJSXNode();this.expectJSX('{');let expression;if(this.matchJSX('}')){expression=this.parseJSXEmptyExpression();this.expectJSX('}');}
else{this.finishJSX();expression=this.parseAssignmentExpression();this.reenterJSX();}
return this.finalize(node,new JSXNode.JSXExpressionContainer(expression));}
parseJSXChildren(){const children=[];while(!this.scanner.eof()){const node=this.createJSXChildNode();const token=this.nextJSXText();if(token.start<token.end){const raw=this.getTokenRaw(token);const child=this.finalize(node,new JSXNode.JSXText(token.value,raw));children.push(child);}
if(this.scanner.source[this.scanner.index]==='{'){const container=this.parseJSXExpressionContainer();children.push(container);}
else{break;}}
return children;}
parseComplexJSXElement(el){const stack=[];while(!this.scanner.eof()){el.children=el.children.concat(this.parseJSXChildren());const node=this.createJSXChildNode();const element=this.parseJSXBoundaryElement();if(element.type===jsx_syntax_1.JSXSyntax.JSXOpeningElement){const opening=element;if(opening.selfClosing){const child=this.finalize(node,new JSXNode.JSXElement(opening,[],null));el.children.push(child);}
else{stack.push(el);el={node,opening,closing:null,children:[]};}}
if(element.type===jsx_syntax_1.JSXSyntax.JSXClosingElement){el.closing=element;const open=getQualifiedElementName(el.opening.name);const close=getQualifiedElementName(el.closing.name);if(open!==close){this.tolerateError('Expected corresponding JSX closing tag for %0',open);}
if(stack.length>0){const child=this.finalize(el.node,new JSXNode.JSXElement(el.opening,el.children,el.closing));el=stack[stack.length-1];el.children.push(child);stack.pop();}
else{break;}}}
return el;}
parseJSXElement(){const node=this.createJSXNode();const opening=this.parseJSXOpeningElement();let children=[];let closing=null;if(!opening.selfClosing){const el=this.parseComplexJSXElement({node,opening,closing,children});children=el.children;closing=el.closing;}
return this.finalize(node,new JSXNode.JSXElement(opening,children,closing));}
parseJSXRoot(){if(this.config.tokens){this.tokens.pop();}
this.startJSX();const element=this.parseJSXElement();this.finishJSX();return element;}
isStartOfExpression(){return super.isStartOfExpression()||this.match('<');}}
exports.JSXParser=JSXParser;},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const 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\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD836[\uDE00-\uDE36\uDE3B-\uDE6C\uDE75\uDE84\uDE9B-\uDE9F\uDEA1-\uDEAF]|\uD838[\uDC00-\uDC06\uDC08-\uDC18\uDC1B-\uDC21\uDC23\uDC24\uDC26-\uDC2A\uDD00-\uDD2C\uDD30-\uDD3D\uDD40-\uDD49\uDD4E\uDEC0-\uDEF9]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6\uDD00-\uDD4B\uDD50-\uDD59]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/};exports.Character={fromCodePoint(cp){return(cp<0x10000)?String.fromCharCode(cp):String.fromCharCode(0xD800+((cp-0x10000)>>10))+
String.fromCharCode(0xDC00+((cp-0x10000)&1023));}, isWhiteSpace(cp){return(cp===0x20)||(cp===0x09)||(cp===0x0B)||(cp===0x0C)||(cp===0xA0)||(cp>=0x1680&&[0x1680,0x2000,0x2001,0x2002,0x2003,0x2004,0x2005,0x2006,0x2007,0x2008,0x2009,0x200A,0x202F,0x205F,0x3000,0xFEFF].indexOf(cp)>=0);}, isLineTerminator(cp){return(cp===0x0A)||(cp===0x0D)||(cp===0x2028)||(cp===0x2029);}, isIdentifierStart(cp){return(cp===0x24)||(cp===0x5F)||(cp>=0x41&&cp<=0x5A)||(cp>=0x61&&cp<=0x7A)||(cp===0x5C)||((cp>=0x80)&&Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp)));},isIdentifierPart(cp){return(cp===0x24)||(cp===0x5F)||(cp>=0x41&&cp<=0x5A)||(cp>=0x61&&cp<=0x7A)||(cp>=0x30&&cp<=0x39)||(cp===0x5C)||((cp>=0x80)&&Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp)));}, isDecimalDigit(cp){return(cp>=0x30&&cp<=0x39);},isHexDigit(cp){return(cp>=0x30&&cp<=0x39)||(cp>=0x41&&cp<=0x46)||(cp>=0x61&&cp<=0x66);},isOctalDigit(cp){return(cp>=0x30&&cp<=0x37);}};},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const jsx_syntax_1=__webpack_require__(6);class JSXClosingElement{constructor(name){this.type=jsx_syntax_1.JSXSyntax.JSXClosingElement;this.name=name;}}
exports.JSXClosingElement=JSXClosingElement;class JSXElement{constructor(openingElement,children,closingElement){this.type=jsx_syntax_1.JSXSyntax.JSXElement;this.openingElement=openingElement;this.children=children;this.closingElement=closingElement;}}
exports.JSXElement=JSXElement;class JSXEmptyExpression{constructor(){this.type=jsx_syntax_1.JSXSyntax.JSXEmptyExpression;}}
exports.JSXEmptyExpression=JSXEmptyExpression;class JSXExpressionContainer{constructor(expression){this.type=jsx_syntax_1.JSXSyntax.JSXExpressionContainer;this.expression=expression;}}
exports.JSXExpressionContainer=JSXExpressionContainer;class JSXIdentifier{constructor(name){this.type=jsx_syntax_1.JSXSyntax.JSXIdentifier;this.name=name;}}
exports.JSXIdentifier=JSXIdentifier;class JSXMemberExpression{constructor(object,property){this.type=jsx_syntax_1.JSXSyntax.JSXMemberExpression;this.object=object;this.property=property;}}
exports.JSXMemberExpression=JSXMemberExpression;class JSXAttribute{constructor(name,value){this.type=jsx_syntax_1.JSXSyntax.JSXAttribute;this.name=name;this.value=value;}}
exports.JSXAttribute=JSXAttribute;class JSXNamespacedName{constructor(namespace,name){this.type=jsx_syntax_1.JSXSyntax.JSXNamespacedName;this.namespace=namespace;this.name=name;}}
exports.JSXNamespacedName=JSXNamespacedName;class JSXOpeningElement{constructor(name,selfClosing,attributes){this.type=jsx_syntax_1.JSXSyntax.JSXOpeningElement;this.name=name;this.selfClosing=selfClosing;this.attributes=attributes;}}
exports.JSXOpeningElement=JSXOpeningElement;class JSXSpreadAttribute{constructor(argument){this.type=jsx_syntax_1.JSXSyntax.JSXSpreadAttribute;this.argument=argument;}}
exports.JSXSpreadAttribute=JSXSpreadAttribute;class JSXText{constructor(value,raw){this.type=jsx_syntax_1.JSXSyntax.JSXText;this.value=value;this.raw=raw;}}
exports.JSXText=JSXText;},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.JSXSyntax={JSXAttribute:'JSXAttribute',JSXClosingElement:'JSXClosingElement',JSXElement:'JSXElement',JSXEmptyExpression:'JSXEmptyExpression',JSXExpressionContainer:'JSXExpressionContainer',JSXIdentifier:'JSXIdentifier',JSXMemberExpression:'JSXMemberExpression',JSXNamespacedName:'JSXNamespacedName',JSXOpeningElement:'JSXOpeningElement',JSXSpreadAttribute:'JSXSpreadAttribute',JSXText:'JSXText'};},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const syntax_1=__webpack_require__(2);class ArrayExpression{constructor(elements){this.type=syntax_1.Syntax.ArrayExpression;this.elements=elements;}}
exports.ArrayExpression=ArrayExpression;class ArrayPattern{constructor(elements){this.type=syntax_1.Syntax.ArrayPattern;this.elements=elements;}}
exports.ArrayPattern=ArrayPattern;class ArrowFunctionExpression{constructor(params,body,expression){this.type=syntax_1.Syntax.ArrowFunctionExpression;this.id=null;this.params=params;this.body=body;this.generator=false;this.expression=expression;this.async=false;}}
exports.ArrowFunctionExpression=ArrowFunctionExpression;class AssignmentExpression{constructor(operator,left,right){this.type=syntax_1.Syntax.AssignmentExpression;this.operator=operator;this.left=left;this.right=right;}}
exports.AssignmentExpression=AssignmentExpression;class AssignmentPattern{constructor(left,right){this.type=syntax_1.Syntax.AssignmentPattern;this.left=left;this.right=right;}}
exports.AssignmentPattern=AssignmentPattern;class AsyncArrowFunctionExpression{constructor(params,body,expression){this.type=syntax_1.Syntax.ArrowFunctionExpression;this.id=null;this.params=params;this.body=body;this.generator=false;this.expression=expression;this.async=true;}}
exports.AsyncArrowFunctionExpression=AsyncArrowFunctionExpression;class AsyncFunctionDeclaration{constructor(id,params,body,generator){this.type=syntax_1.Syntax.FunctionDeclaration;this.id=id;this.params=params;this.body=body;this.generator=generator;this.expression=false;this.async=true;}}
exports.AsyncFunctionDeclaration=AsyncFunctionDeclaration;class AsyncFunctionExpression{constructor(id,params,body,generator){this.type=syntax_1.Syntax.FunctionExpression;this.id=id;this.params=params;this.body=body;this.generator=generator;this.expression=false;this.async=true;}}
exports.AsyncFunctionExpression=AsyncFunctionExpression;class AwaitExpression{constructor(argument){this.type=syntax_1.Syntax.AwaitExpression;this.argument=argument;}}
exports.AwaitExpression=AwaitExpression;class BigIntLiteral{constructor(value,bigint,raw){this.type=syntax_1.Syntax.Literal;this.value=value;this.bigint=bigint;this.raw=raw;}}
exports.BigIntLiteral=BigIntLiteral;class BinaryExpression{constructor(operator,left,right){const logical=(operator==='||'||operator==='&&');this.type=logical?syntax_1.Syntax.LogicalExpression:syntax_1.Syntax.BinaryExpression;this.operator=operator;this.left=left;this.right=right;}}
exports.BinaryExpression=BinaryExpression;class BlockStatement{constructor(body){this.type=syntax_1.Syntax.BlockStatement;this.body=body;}}
exports.BlockStatement=BlockStatement;class BreakStatement{constructor(label){this.type=syntax_1.Syntax.BreakStatement;this.label=label;}}
exports.BreakStatement=BreakStatement;class CallExpression{constructor(callee,args){this.type=syntax_1.Syntax.CallExpression;this.callee=callee;this.arguments=args;}}
exports.CallExpression=CallExpression;class CatchClause{constructor(param,body){this.type=syntax_1.Syntax.CatchClause;this.param=param;this.body=body;}}
exports.CatchClause=CatchClause;class ClassBody{constructor(body){this.type=syntax_1.Syntax.ClassBody;this.body=body;}}
exports.ClassBody=ClassBody;class ClassDeclaration{constructor(id,superClass,body){this.type=syntax_1.Syntax.ClassDeclaration;this.id=id;this.superClass=superClass;this.body=body;}}
exports.ClassDeclaration=ClassDeclaration;class ClassExpression{constructor(id,superClass,body){this.type=syntax_1.Syntax.ClassExpression;this.id=id;this.superClass=superClass;this.body=body;}}
exports.ClassExpression=ClassExpression;class ComputedMemberExpression{constructor(object,property){this.type=syntax_1.Syntax.MemberExpression;this.computed=true;this.object=object;this.property=property;}}
exports.ComputedMemberExpression=ComputedMemberExpression;class ConditionalExpression{constructor(test,consequent,alternate){this.type=syntax_1.Syntax.ConditionalExpression;this.test=test;this.consequent=consequent;this.alternate=alternate;}}
exports.ConditionalExpression=ConditionalExpression;class ContinueStatement{constructor(label){this.type=syntax_1.Syntax.ContinueStatement;this.label=label;}}
exports.ContinueStatement=ContinueStatement;class DebuggerStatement{constructor(){this.type=syntax_1.Syntax.DebuggerStatement;}}
exports.DebuggerStatement=DebuggerStatement;class Directive{constructor(expression,directive){this.type=syntax_1.Syntax.ExpressionStatement;this.expression=expression;this.directive=directive;}}
exports.Directive=Directive;class DoWhileStatement{constructor(body,test){this.type=syntax_1.Syntax.DoWhileStatement;this.body=body;this.test=test;}}
exports.DoWhileStatement=DoWhileStatement;class EmptyStatement{constructor(){this.type=syntax_1.Syntax.EmptyStatement;}}
exports.EmptyStatement=EmptyStatement;class ExportAllDeclaration{constructor(source){this.type=syntax_1.Syntax.ExportAllDeclaration;this.source=source;}}
exports.ExportAllDeclaration=ExportAllDeclaration;class ExportDefaultDeclaration{constructor(declaration){this.type=syntax_1.Syntax.ExportDefaultDeclaration;this.declaration=declaration;}}
exports.ExportDefaultDeclaration=ExportDefaultDeclaration;class ExportNamedDeclaration{constructor(declaration,specifiers,source){this.type=syntax_1.Syntax.ExportNamedDeclaration;this.declaration=declaration;this.specifiers=specifiers;this.source=source;}}
exports.ExportNamedDeclaration=ExportNamedDeclaration;class ExportSpecifier{constructor(local,exported){this.type=syntax_1.Syntax.ExportSpecifier;this.exported=exported;this.local=local;}}
exports.ExportSpecifier=ExportSpecifier;class ExpressionStatement{constructor(expression){this.type=syntax_1.Syntax.ExpressionStatement;this.expression=expression;}}
exports.ExpressionStatement=ExpressionStatement;class ForInStatement{constructor(left,right,body){this.type=syntax_1.Syntax.ForInStatement;this.left=left;this.right=right;this.body=body;this.each=false;}}
exports.ForInStatement=ForInStatement;class ForOfStatement{constructor(left,right,body,isAwait){this.type=syntax_1.Syntax.ForOfStatement;this.left=left;this.right=right;this.body=body;this.await=isAwait;}}
exports.ForOfStatement=ForOfStatement;class ForStatement{constructor(init,test,update,body){this.type=syntax_1.Syntax.ForStatement;this.init=init;this.test=test;this.update=update;this.body=body;}}
exports.ForStatement=ForStatement;class FunctionDeclaration{constructor(id,params,body,generator){this.type=syntax_1.Syntax.FunctionDeclaration;this.id=id;this.params=params;this.body=body;this.generator=generator;this.expression=false;this.async=false;}}
exports.FunctionDeclaration=FunctionDeclaration;class FunctionExpression{constructor(id,params,body,generator){this.type=syntax_1.Syntax.FunctionExpression;this.id=id;this.params=params;this.body=body;this.generator=generator;this.expression=false;this.async=false;}}
exports.FunctionExpression=FunctionExpression;class Identifier{constructor(name){this.type=syntax_1.Syntax.Identifier;this.name=name;}}
exports.Identifier=Identifier;class IfStatement{constructor(test,consequent,alternate){this.type=syntax_1.Syntax.IfStatement;this.test=test;this.consequent=consequent;this.alternate=alternate;}}
exports.IfStatement=IfStatement;class Import{constructor(){this.type=syntax_1.Syntax.Import;}}
exports.Import=Import;class ImportDeclaration{constructor(specifiers,source){this.type=syntax_1.Syntax.ImportDeclaration;this.specifiers=specifiers;this.source=source;}}
exports.ImportDeclaration=ImportDeclaration;class ImportDefaultSpecifier{constructor(local){this.type=syntax_1.Syntax.ImportDefaultSpecifier;this.local=local;}}
exports.ImportDefaultSpecifier=ImportDefaultSpecifier;class ImportNamespaceSpecifier{constructor(local){this.type=syntax_1.Syntax.ImportNamespaceSpecifier;this.local=local;}}
exports.ImportNamespaceSpecifier=ImportNamespaceSpecifier;class ImportSpecifier{constructor(local,imported){this.type=syntax_1.Syntax.ImportSpecifier;this.local=local;this.imported=imported;}}
exports.ImportSpecifier=ImportSpecifier;class LabeledStatement{constructor(label,body){this.type=syntax_1.Syntax.LabeledStatement;this.label=label;this.body=body;}}
exports.LabeledStatement=LabeledStatement;class Literal{constructor(value,raw){this.type=syntax_1.Syntax.Literal;this.value=value;this.raw=raw;}}
exports.Literal=Literal;class MetaProperty{constructor(meta,property){this.type=syntax_1.Syntax.MetaProperty;this.meta=meta;this.property=property;}}
exports.MetaProperty=MetaProperty;class MethodDefinition{constructor(key,computed,value,kind,isStatic){this.type=syntax_1.Syntax.MethodDefinition;this.key=key;this.computed=computed;this.value=value;this.kind=kind;this.static=isStatic;}}
exports.MethodDefinition=MethodDefinition;class Module{constructor(body){this.type=syntax_1.Syntax.Program;this.body=body;this.sourceType='module';}}
exports.Module=Module;class NewExpression{constructor(callee,args){this.type=syntax_1.Syntax.NewExpression;this.callee=callee;this.arguments=args;}}
exports.NewExpression=NewExpression;class ObjectExpression{constructor(properties){this.type=syntax_1.Syntax.ObjectExpression;this.properties=properties;}}
exports.ObjectExpression=ObjectExpression;class ObjectPattern{constructor(properties){this.type=syntax_1.Syntax.ObjectPattern;this.properties=properties;}}
exports.ObjectPattern=ObjectPattern;class Property{constructor(kind,key,computed,value,method,shorthand){this.type=syntax_1.Syntax.Property;this.key=key;this.computed=computed;this.value=value;this.kind=kind;this.method=method;this.shorthand=shorthand;}}
exports.Property=Property;class RegexLiteral{constructor(value,raw,pattern,flags){this.type=syntax_1.Syntax.Literal;this.value=value;this.raw=raw;this.regex={pattern,flags};}}
exports.RegexLiteral=RegexLiteral;class RestElement{constructor(argument){this.type=syntax_1.Syntax.RestElement;this.argument=argument;}}
exports.RestElement=RestElement;class ReturnStatement{constructor(argument){this.type=syntax_1.Syntax.ReturnStatement;this.argument=argument;}}
exports.ReturnStatement=ReturnStatement;class Script{constructor(body){this.type=syntax_1.Syntax.Program;this.body=body;this.sourceType='script';}}
exports.Script=Script;class SequenceExpression{constructor(expressions){this.type=syntax_1.Syntax.SequenceExpression;this.expressions=expressions;}}
exports.SequenceExpression=SequenceExpression;class SpreadElement{constructor(argument){this.type=syntax_1.Syntax.SpreadElement;this.argument=argument;}}
exports.SpreadElement=SpreadElement;class StaticMemberExpression{constructor(object,property){this.type=syntax_1.Syntax.MemberExpression;this.computed=false;this.object=object;this.property=property;}}
exports.StaticMemberExpression=StaticMemberExpression;class Super{constructor(){this.type=syntax_1.Syntax.Super;}}
exports.Super=Super;class SwitchCase{constructor(test,consequent){this.type=syntax_1.Syntax.SwitchCase;this.test=test;this.consequent=consequent;}}
exports.SwitchCase=SwitchCase;class SwitchStatement{constructor(discriminant,cases){this.type=syntax_1.Syntax.SwitchStatement;this.discriminant=discriminant;this.cases=cases;}}
exports.SwitchStatement=SwitchStatement;class TaggedTemplateExpression{constructor(tag,quasi){this.type=syntax_1.Syntax.TaggedTemplateExpression;this.tag=tag;this.quasi=quasi;}}
exports.TaggedTemplateExpression=TaggedTemplateExpression;class TemplateElement{constructor(value,tail){this.type=syntax_1.Syntax.TemplateElement;this.value=value;this.tail=tail;}}
exports.TemplateElement=TemplateElement;class TemplateLiteral{constructor(quasis,expressions){this.type=syntax_1.Syntax.TemplateLiteral;this.quasis=quasis;this.expressions=expressions;}}
exports.TemplateLiteral=TemplateLiteral;class ThisExpression{constructor(){this.type=syntax_1.Syntax.ThisExpression;}}
exports.ThisExpression=ThisExpression;class ThrowStatement{constructor(argument){this.type=syntax_1.Syntax.ThrowStatement;this.argument=argument;}}
exports.ThrowStatement=ThrowStatement;class TryStatement{constructor(block,handler,finalizer){this.type=syntax_1.Syntax.TryStatement;this.block=block;this.handler=handler;this.finalizer=finalizer;}}
exports.TryStatement=TryStatement;class UnaryExpression{constructor(operator,argument){this.type=syntax_1.Syntax.UnaryExpression;this.operator=operator;this.argument=argument;this.prefix=true;}}
exports.UnaryExpression=UnaryExpression;class UpdateExpression{constructor(operator,argument,prefix){this.type=syntax_1.Syntax.UpdateExpression;this.operator=operator;this.argument=argument;this.prefix=prefix;}}
exports.UpdateExpression=UpdateExpression;class VariableDeclaration{constructor(declarations,kind){this.type=syntax_1.Syntax.VariableDeclaration;this.declarations=declarations;this.kind=kind;}}
exports.VariableDeclaration=VariableDeclaration;class VariableDeclarator{constructor(id,init){this.type=syntax_1.Syntax.VariableDeclarator;this.id=id;this.init=init;}}
exports.VariableDeclarator=VariableDeclarator;class WhileStatement{constructor(test,body){this.type=syntax_1.Syntax.WhileStatement;this.test=test;this.body=body;}}
exports.WhileStatement=WhileStatement;class WithStatement{constructor(object,body){this.type=syntax_1.Syntax.WithStatement;this.object=object;this.body=body;}}
exports.WithStatement=WithStatement;class YieldExpression{constructor(argument,delegate){this.type=syntax_1.Syntax.YieldExpression;this.argument=argument;this.delegate=delegate;}}
exports.YieldExpression=YieldExpression;},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const assert_1=__webpack_require__(9);const error_handler_1=__webpack_require__(10);const messages_1=__webpack_require__(11);const Node=__webpack_require__(7);const scanner_1=__webpack_require__(12);const syntax_1=__webpack_require__(2);const token_1=__webpack_require__(13);const ArrowParameterPlaceHolder='ArrowParameterPlaceHolder';class Parser{constructor(code,options={},delegate){this.config={range:(typeof options.range==='boolean')&&options.range,loc:(typeof options.loc==='boolean')&&options.loc,source:null,tokens:(typeof options.tokens==='boolean')&&options.tokens,comment:(typeof options.comment==='boolean')&&options.comment,tolerant:(typeof options.tolerant==='boolean')&&options.tolerant};if(this.config.loc&&options.source&&options.source!==null){this.config.source=String(options.source);}
this.delegate=delegate;this.errorHandler=new error_handler_1.ErrorHandler();this.errorHandler.tolerant=this.config.tolerant;this.scanner=new scanner_1.Scanner(code,this.errorHandler);this.scanner.trackComment=this.config.comment;this.operatorPrecedence={')':0,';':0,',':0,'=':0,']':0,'||':1,'&&':2,'|':3,'^':4,'&':5,'==':6,'!=':6,'===':6,'!==':6,'<':7,'>':7,'<=':7,'>=':7,'<<':8,'>>':8,'>>>':8,'+':9,'-':9,'*':11,'/':11,'%':11};this.lookahead={type:2,value:'',lineNumber:this.scanner.lineNumber,lineStart:0,start:0,end:0};this.hasLineTerminator=false;this.context={isModule:false,await:false,allowIn:true,allowStrictDirective:true,allowYield:true,firstCoverInitializedNameError:null,isAssignmentTarget:false,isBindingElement:false,inFunctionBody:false,inIteration:false,inSwitch:false,labelSet:{},strict:false};this.tokens=[];this.startMarker={index:0,line:this.scanner.lineNumber,column:0};this.lastMarker={index:0,line:this.scanner.lineNumber,column:0};this.nextToken();this.lastMarker={index:this.scanner.index,line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart};}
throwError(messageFormat,...values){const args=Array.prototype.slice.call(arguments,1);const msg=messageFormat.replace(/%(\d)/g,(whole,idx)=>{assert_1.assert(idx<args.length,'Message reference must be in range');return args[idx];});const index=this.lastMarker.index;const line=this.lastMarker.line;const column=this.lastMarker.column+1;throw this.errorHandler.createError(index,line,column,msg);}
tolerateError(messageFormat,...values){const args=Array.prototype.slice.call(arguments,1);const msg=messageFormat.replace(/%(\d)/g,(whole,idx)=>{assert_1.assert(idx<args.length,'Message reference must be in range');return args[idx];});const index=this.lastMarker.index;const line=this.scanner.lineNumber;const column=this.lastMarker.column+1;this.errorHandler.tolerateError(index,line,column,msg);}
unexpectedTokenError(token,message){let msg=message||messages_1.Messages.UnexpectedToken;let value;if(token){if(!message){msg=(token.type===2)?messages_1.Messages.UnexpectedEOS:(token.type===3)?messages_1.Messages.UnexpectedIdentifier:(token.type===6)?messages_1.Messages.UnexpectedNumber:(token.type===8)?messages_1.Messages.UnexpectedString:(token.type===10)?messages_1.Messages.UnexpectedTemplate:messages_1.Messages.UnexpectedToken;if(token.type===4){if(this.scanner.isFutureReservedWord(token.value)){msg=messages_1.Messages.UnexpectedReserved;}
else if(this.context.strict&&this.scanner.isStrictModeReservedWord(token.value)){msg=messages_1.Messages.StrictReservedWord;}}}
value=token.value;}
else{value='ILLEGAL';}
msg=msg.replace('%0',value);if(token&&typeof token.lineNumber==='number'){const index=token.start;const line=token.lineNumber;const lastMarkerLineStart=this.lastMarker.index-this.lastMarker.column;const column=token.start-lastMarkerLineStart+1;return this.errorHandler.createError(index,line,column,msg);}
else{const index=this.lastMarker.index;const line=this.lastMarker.line;const column=this.lastMarker.column+1;return this.errorHandler.createError(index,line,column,msg);}}
throwUnexpectedToken(token,message){throw this.unexpectedTokenError(token,message);}
tolerateUnexpectedToken(token,message){this.errorHandler.tolerate(this.unexpectedTokenError(token,message));}
collectComments(){if(!this.config.comment){this.scanner.scanComments();}
else{const comments=this.scanner.scanComments();if(comments.length>0&&this.delegate){for(let i=0;i<comments.length;++i){const e=comments[i];let node;node={type:e.multiLine?'BlockComment':'LineComment',value:this.scanner.source.slice(e.slice[0],e.slice[1])};if(this.config.range){node.range=e.range;}
if(this.config.loc){node.loc=e.loc;}
const metadata={start:{line:e.loc.start.line,column:e.loc.start.column,offset:e.range[0]},end:{line:e.loc.end.line,column:e.loc.end.column,offset:e.range[1]}};this.delegate(node,metadata);}}}} 
getTokenRaw(token){return this.scanner.source.slice(token.start,token.end);}
convertToken(token){const t={type:token_1.TokenName[token.type],value:this.getTokenRaw(token)};if(this.config.range){t.range=[token.start,token.end];}
if(this.config.loc){t.loc={start:{line:this.startMarker.line,column:this.startMarker.column},end:{line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart}};}
if(token.type===9){const pattern=token.pattern;const flags=token.flags;t.regex={pattern,flags};}
return t;}
nextToken(){const token=this.lookahead;this.lastMarker.index=this.scanner.index;this.lastMarker.line=this.scanner.lineNumber;this.lastMarker.column=this.scanner.index-this.scanner.lineStart;this.collectComments();if(this.scanner.index!==this.startMarker.index){this.startMarker.index=this.scanner.index;this.startMarker.line=this.scanner.lineNumber;this.startMarker.column=this.scanner.index-this.scanner.lineStart;}
const next=this.scanner.lex();this.hasLineTerminator=(token.lineNumber!==next.lineNumber);if(next&&this.context.strict&&next.type===3){if(this.scanner.isStrictModeReservedWord(next.value)){next.type=4;}}
this.lookahead=next;if(this.config.tokens&&next.type!==2){this.tokens.push(this.convertToken(next));}
return token;}
nextRegexToken(){this.collectComments();const token=this.scanner.scanRegExp();if(this.config.tokens){this.tokens.pop();this.tokens.push(this.convertToken(token));}
this.lookahead=token;this.nextToken();return token;}
createNode(){return{index:this.startMarker.index,line:this.startMarker.line,column:this.startMarker.column};}
startNode(token,lastLineStart=0){let column=token.start-token.lineStart;let line=token.lineNumber;if(column<0){column+=lastLineStart;line--;}
return{index:token.start,line:line,column:column};}
finalize(marker,node){if(this.config.range){node.range=[marker.index,this.lastMarker.index];}
if(this.config.loc){node.loc={start:{line:marker.line,column:marker.column,},end:{line:this.lastMarker.line,column:this.lastMarker.column}};if(this.config.source){node.loc.source=this.config.source;}}
if(this.delegate){const metadata={start:{line:marker.line,column:marker.column,offset:marker.index},end:{line:this.lastMarker.line,column:this.lastMarker.column,offset:this.lastMarker.index}};this.delegate(node,metadata);}
return node;}
expect(value){const token=this.nextToken();if(token.type!==7||token.value!==value){this.throwUnexpectedToken(token);}}
expectCommaSeparator(){if(this.config.tolerant){const token=this.lookahead;if(token.type===7&&token.value===','){this.nextToken();}
else if(token.type===7&&token.value===';'){this.nextToken();this.tolerateUnexpectedToken(token);}
else{this.tolerateUnexpectedToken(token,messages_1.Messages.UnexpectedToken);}}
else{this.expect(',');}}
expectKeyword(keyword){const token=this.nextToken();if(token.type!==4||token.value!==keyword){this.throwUnexpectedToken(token);}}
match(value){return this.lookahead.type===7&&this.lookahead.value===value;} 
matchKeyword(keyword){return this.lookahead.type===4&&this.lookahead.value===keyword;}

matchContextualKeyword(keyword){return this.lookahead.type===3&&this.lookahead.value===keyword;} 
matchAssign(){if(this.lookahead.type!==7){return false;}
const op=this.lookahead.value;return op==='='||op==='*='||op==='**='||op==='/='||op==='%='||op==='+='||op==='-='||op==='<<='||op==='>>='||op==='>>>='||op==='&='||op==='^='||op==='|=';}













isolateCoverGrammar(parseFunction){const previousIsBindingElement=this.context.isBindingElement;const previousIsAssignmentTarget=this.context.isAssignmentTarget;const previousFirstCoverInitializedNameError=this.context.firstCoverInitializedNameError;this.context.isBindingElement=true;this.context.isAssignmentTarget=true;this.context.firstCoverInitializedNameError=null;const result=parseFunction.call(this);if(this.context.firstCoverInitializedNameError!==null){this.throwUnexpectedToken(this.context.firstCoverInitializedNameError);}
this.context.isBindingElement=previousIsBindingElement;this.context.isAssignmentTarget=previousIsAssignmentTarget;this.context.firstCoverInitializedNameError=previousFirstCoverInitializedNameError;return result;}
inheritCoverGrammar(parseFunction){const previousIsBindingElement=this.context.isBindingElement;const previousIsAssignmentTarget=this.context.isAssignmentTarget;const previousFirstCoverInitializedNameError=this.context.firstCoverInitializedNameError;this.context.isBindingElement=true;this.context.isAssignmentTarget=true;this.context.firstCoverInitializedNameError=null;const result=parseFunction.call(this);this.context.isBindingElement=this.context.isBindingElement&&previousIsBindingElement;this.context.isAssignmentTarget=this.context.isAssignmentTarget&&previousIsAssignmentTarget;this.context.firstCoverInitializedNameError=previousFirstCoverInitializedNameError||this.context.firstCoverInitializedNameError;return result;}
consumeSemicolon(){if(this.match(';')){this.nextToken();}
else if(!this.hasLineTerminator){if(this.lookahead.type!==2&&!this.match('}')){this.throwUnexpectedToken(this.lookahead);}
this.lastMarker.index=this.startMarker.index;this.lastMarker.line=this.startMarker.line;this.lastMarker.column=this.startMarker.column;}} 
parsePrimaryExpression(){const node=this.createNode();let expr;let token,raw;switch(this.lookahead.type){case 3:if((this.context.isModule||this.context.await)&&this.lookahead.value==='await'){this.tolerateUnexpectedToken(this.lookahead);}
expr=this.matchAsyncFunction()?this.parseFunctionExpression():this.finalize(node,new Node.Identifier(this.nextToken().value));break;case 6:case 8:if(this.context.strict&&this.lookahead.octal){this.tolerateUnexpectedToken(this.lookahead,messages_1.Messages.StrictOctalLiteral);}
this.context.isAssignmentTarget=false;this.context.isBindingElement=false;token=this.nextToken();raw=this.getTokenRaw(token);if(token.bigint){const bigintString=token.value!==null?token.value.toString():this.scanner.source.slice(token.start,token.end-1);expr=this.finalize(node,new Node.BigIntLiteral(token.value,bigintString,raw));}
else{expr=this.finalize(node,new Node.Literal(token.value,raw));}
break;case 1:this.context.isAssignmentTarget=false;this.context.isBindingElement=false;token=this.nextToken();raw=this.getTokenRaw(token);expr=this.finalize(node,new Node.Literal(token.value==='true',raw));break;case 5:this.context.isAssignmentTarget=false;this.context.isBindingElement=false;token=this.nextToken();raw=this.getTokenRaw(token);expr=this.finalize(node,new Node.Literal(null,raw));break;case 10:expr=this.parseTemplateLiteral();break;case 7:switch(this.lookahead.value){case'(':this.context.isBindingElement=false;expr=this.inheritCoverGrammar(this.parseGroupExpression);break;case'[':expr=this.inheritCoverGrammar(this.parseArrayInitializer);break;case'{':expr=this.inheritCoverGrammar(this.parseObjectInitializer);break;case'/':case'/=':this.context.isAssignmentTarget=false;this.context.isBindingElement=false;this.scanner.index=this.startMarker.index;token=this.nextRegexToken();raw=this.getTokenRaw(token);expr=this.finalize(node,new Node.RegexLiteral(token.regex,raw,token.pattern,token.flags));break;default:expr=this.throwUnexpectedToken(this.nextToken());}
break;case 4:if(!this.context.strict&&this.context.allowYield&&this.matchKeyword('yield')){expr=this.parseIdentifierName();}
else if(!this.context.strict&&this.matchKeyword('let')){expr=this.finalize(node,new Node.Identifier(this.nextToken().value));}
else{this.context.isAssignmentTarget=false;this.context.isBindingElement=false;if(this.matchKeyword('function')){expr=this.parseFunctionExpression();}
else if(this.matchKeyword('this')){this.nextToken();expr=this.finalize(node,new Node.ThisExpression());}
else if(this.matchKeyword('class')){expr=this.parseClassExpression();}
else if(this.matchImportCall()){expr=this.parseImportCall();}
else{expr=this.throwUnexpectedToken(this.nextToken());}}
break;default:expr=this.throwUnexpectedToken(this.nextToken());}
return expr;} 
parseSpreadElement(){const node=this.createNode();this.expect('...');const arg=this.inheritCoverGrammar(this.parseAssignmentExpression);return this.finalize(node,new Node.SpreadElement(arg));}
parseArrayInitializer(){const node=this.createNode();const elements=[];this.expect('[');while(!this.match(']')){if(this.match(',')){this.nextToken();elements.push(null);}
else if(this.match('...')){const element=this.parseSpreadElement();if(!this.match(']')){this.context.isAssignmentTarget=false;this.context.isBindingElement=false;this.expect(',');}
elements.push(element);}
else{elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression));if(!this.match(']')){this.expect(',');}}}
this.expect(']');return this.finalize(node,new Node.ArrayExpression(elements));} 
parsePropertyMethod(params){this.context.isAssignmentTarget=false;this.context.isBindingElement=false;const previousStrict=this.context.strict;const previousAllowStrictDirective=this.context.allowStrictDirective;this.context.allowStrictDirective=params.simple;const body=this.isolateCoverGrammar(this.parseFunctionSourceElements);if(this.context.strict&&params.firstRestricted){this.tolerateUnexpectedToken(params.firstRestricted,params.message);}
if(this.context.strict&&params.stricted){this.tolerateUnexpectedToken(params.stricted,params.message);}
this.context.strict=previousStrict;this.context.allowStrictDirective=previousAllowStrictDirective;return body;}
parsePropertyMethodFunction(){const isGenerator=false;const node=this.createNode();const previousAllowYield=this.context.allowYield;this.context.allowYield=true;const params=this.parseFormalParameters();const method=this.parsePropertyMethod(params);this.context.allowYield=previousAllowYield;return this.finalize(node,new Node.FunctionExpression(null,params.params,method,isGenerator));}
parsePropertyMethodAsyncFunction(isGenerator){const node=this.createNode();const previousAllowYield=this.context.allowYield;const previousAwait=this.context.await;this.context.allowYield=false;this.context.await=true;const params=this.parseFormalParameters();const method=this.parsePropertyMethod(params);this.context.allowYield=previousAllowYield;this.context.await=previousAwait;return this.finalize(node,new Node.AsyncFunctionExpression(null,params.params,method,isGenerator));}
parseObjectPropertyKey(){const node=this.createNode();const token=this.nextToken();let key;switch(token.type){case 8:case 6:if(this.context.strict&&token.octal){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictOctalLiteral);}
const raw=this.getTokenRaw(token);key=this.finalize(node,new Node.Literal(token.value,raw));break;case 3:case 1:case 5:case 4:key=this.finalize(node,new Node.Identifier(token.value));break;case 7:if(token.value==='['){key=this.isolateCoverGrammar(this.parseAssignmentExpression);this.expect(']');}
else{key=this.throwUnexpectedToken(token);}
break;default:key=this.throwUnexpectedToken(token);}
return key;}
isPropertyKey(key,value){return(key.type===syntax_1.Syntax.Identifier&&key.name===value)||(key.type===syntax_1.Syntax.Literal&&key.value===value);}
parseObjectProperty(hasProto){const node=this.createNode();const token=this.lookahead;let kind;let key=null;let value=null;let computed=false;let method=false;let shorthand=false;let isAsync=false;let isAsyncGenerator=false;if(token.type===3){const id=token.value;this.nextToken();computed=this.match('[');isAsync=!this.hasLineTerminator&&(id==='async')&&!this.match(':')&&!this.match('(')&&!this.match(',');isAsyncGenerator=this.match('*');if(isAsyncGenerator){this.nextToken();}
key=isAsync?this.parseObjectPropertyKey():this.finalize(node,new Node.Identifier(id));}
else if(this.match('*')){this.nextToken();}
else{computed=this.match('[');key=this.parseObjectPropertyKey();}
const lookaheadPropertyKey=this.qualifiedPropertyName(this.lookahead);if(token.type===3&&!isAsync&&token.value==='get'&&lookaheadPropertyKey){kind='get';computed=this.match('[');key=this.parseObjectPropertyKey();this.context.allowYield=false;value=this.parseGetterMethod();}
else if(token.type===3&&!isAsync&&token.value==='set'&&lookaheadPropertyKey){kind='set';computed=this.match('[');key=this.parseObjectPropertyKey();value=this.parseSetterMethod();}
else if(token.type===7&&token.value==='*'&&lookaheadPropertyKey){kind='init';computed=this.match('[');key=this.parseObjectPropertyKey();value=this.parseGeneratorMethod();method=true;}
else{if(!key){this.throwUnexpectedToken(this.lookahead);}
kind='init';if(this.match(':')&&!isAsync){if(!computed&&this.isPropertyKey(key,'__proto__')){if(hasProto.value){this.tolerateError(messages_1.Messages.DuplicateProtoProperty);}
hasProto.value=true;}
this.nextToken();value=this.inheritCoverGrammar(this.parseAssignmentExpression);}
else if(this.match('(')){value=isAsync?this.parsePropertyMethodAsyncFunction(isAsyncGenerator):this.parsePropertyMethodFunction();method=true;}
else if(token.type===3){const id=this.finalize(node,new Node.Identifier(token.value));if(this.match('=')){this.context.firstCoverInitializedNameError=this.lookahead;this.nextToken();shorthand=true;const init=this.isolateCoverGrammar(this.parseAssignmentExpression);value=this.finalize(node,new Node.AssignmentPattern(id,init));}
else{shorthand=true;value=id;}}
else{this.throwUnexpectedToken(this.nextToken());}}
return this.finalize(node,new Node.Property(kind,key,computed,value,method,shorthand));}
parseObjectInitializer(){const node=this.createNode();this.expect('{');const properties=[];const hasProto={value:false};while(!this.match('}')){properties.push(this.match('...')?this.parseSpreadElement():this.parseObjectProperty(hasProto));if(!this.match('}')){this.expectCommaSeparator();}}
this.expect('}');return this.finalize(node,new Node.ObjectExpression(properties));} 
parseTemplateHead(){assert_1.assert(this.lookahead.head,'Template literal must start with a template head');const node=this.createNode();const token=this.nextToken();const raw=token.value;const cooked=token.cooked;return this.finalize(node,new Node.TemplateElement({raw,cooked},token.tail));}
parseTemplateElement(){if(this.lookahead.type!==10){this.throwUnexpectedToken();}
const node=this.createNode();const token=this.nextToken();const raw=token.value;const cooked=token.cooked;return this.finalize(node,new Node.TemplateElement({raw,cooked},token.tail));}
parseTemplateLiteral(){const node=this.createNode();const expressions=[];const quasis=[];let quasi=this.parseTemplateHead();quasis.push(quasi);while(!quasi.tail){expressions.push(this.parseExpression());quasi=this.parseTemplateElement();quasis.push(quasi);}
return this.finalize(node,new Node.TemplateLiteral(quasis,expressions));} 
reinterpretExpressionAsPattern(expr){switch(expr.type){case syntax_1.Syntax.Identifier:case syntax_1.Syntax.MemberExpression:case syntax_1.Syntax.RestElement:case syntax_1.Syntax.AssignmentPattern:break;case syntax_1.Syntax.SpreadElement:expr.type=syntax_1.Syntax.RestElement;this.reinterpretExpressionAsPattern(expr.argument);break;case syntax_1.Syntax.ArrayExpression:expr.type=syntax_1.Syntax.ArrayPattern;for(let i=0;i<expr.elements.length;i++){if(expr.elements[i]!==null){this.reinterpretExpressionAsPattern(expr.elements[i]);}}
break;case syntax_1.Syntax.ObjectExpression:expr.type=syntax_1.Syntax.ObjectPattern;for(let i=0;i<expr.properties.length;i++){const property=expr.properties[i];this.reinterpretExpressionAsPattern(property.type===syntax_1.Syntax.SpreadElement?property:property.value);}
break;case syntax_1.Syntax.AssignmentExpression:expr.type=syntax_1.Syntax.AssignmentPattern;delete expr.operator;this.reinterpretExpressionAsPattern(expr.left);break;default:break;}}
parseGroupExpression(){let expr;this.expect('(');if(this.match(')')){this.nextToken();if(!this.match('=>')){this.expect('=>');}
expr={type:ArrowParameterPlaceHolder,params:[],async:false};}
else{const startToken=this.lookahead;const params=[];if(this.match('...')){expr=this.parseRestElement(params);this.expect(')');if(!this.match('=>')){this.expect('=>');}
expr={type:ArrowParameterPlaceHolder,params:[expr],async:false};}
else{let arrow=false;this.context.isBindingElement=true;expr=this.inheritCoverGrammar(this.parseAssignmentExpression);if(this.match(',')){const expressions=[];this.context.isAssignmentTarget=false;expressions.push(expr);while(this.lookahead.type!==2){if(!this.match(',')){break;}
this.nextToken();if(this.match(')')){this.nextToken();for(let i=0;i<expressions.length;i++){this.reinterpretExpressionAsPattern(expressions[i]);}
arrow=true;expr={type:ArrowParameterPlaceHolder,params:expressions,async:false};}
else if(this.match('...')){if(!this.context.isBindingElement){this.throwUnexpectedToken(this.lookahead);}
expressions.push(this.parseRestElement(params));this.expect(')');if(!this.match('=>')){this.expect('=>');}
this.context.isBindingElement=false;for(let i=0;i<expressions.length;i++){this.reinterpretExpressionAsPattern(expressions[i]);}
arrow=true;expr={type:ArrowParameterPlaceHolder,params:expressions,async:false};}
else{expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression));}
if(arrow){break;}}
if(!arrow){expr=this.finalize(this.startNode(startToken),new Node.SequenceExpression(expressions));}}
if(!arrow){this.expect(')');if(this.match('=>')){if(expr.type===syntax_1.Syntax.Identifier&&expr.name==='yield'){arrow=true;expr={type:ArrowParameterPlaceHolder,params:[expr],async:false};}
if(!arrow){if(!this.context.isBindingElement){this.throwUnexpectedToken(this.lookahead);}
if(expr.type===syntax_1.Syntax.SequenceExpression){for(let i=0;i<expr.expressions.length;i++){this.reinterpretExpressionAsPattern(expr.expressions[i]);}}
else{this.reinterpretExpressionAsPattern(expr);}
const parameters=(expr.type===syntax_1.Syntax.SequenceExpression?expr.expressions:[expr]);expr={type:ArrowParameterPlaceHolder,params:parameters,async:false};}}
this.context.isBindingElement=false;}}}
return expr;} 
parseArguments(){this.expect('(');const args=[];if(!this.match(')')){while(true){const expr=this.match('...')?this.parseSpreadElement():this.isolateCoverGrammar(this.parseAssignmentExpression);args.push(expr);if(this.match(')')){break;}
this.expectCommaSeparator();if(this.match(')')){break;}}}
this.expect(')');return args;}
isIdentifierName(token){return token.type===3||token.type===4||token.type===1||token.type===5;}
parseIdentifierName(){const node=this.createNode();const token=this.nextToken();if(!this.isIdentifierName(token)){this.throwUnexpectedToken(token);}
return this.finalize(node,new Node.Identifier(token.value));}
parseNewExpression(){const node=this.createNode();const id=this.parseIdentifierName();assert_1.assert(id.name==='new','New expression must start with `new`');let expr;if(this.match('.')){this.nextToken();if(this.lookahead.type===3&&this.context.inFunctionBody&&this.lookahead.value==='target'){const property=this.parseIdentifierName();expr=new Node.MetaProperty(id,property);}
else{this.throwUnexpectedToken(this.lookahead);}}
else if(this.matchKeyword('import')){this.throwUnexpectedToken(this.lookahead);}
else{const callee=this.isolateCoverGrammar(this.parseLeftHandSideExpression);const args=this.match('(')?this.parseArguments():[];expr=new Node.NewExpression(callee,args);this.context.isAssignmentTarget=false;this.context.isBindingElement=false;}
return this.finalize(node,expr);}
parseAsyncArgument(){const arg=this.parseAssignmentExpression();this.context.firstCoverInitializedNameError=null;return arg;}
parseAsyncArguments(){this.expect('(');const args=[];if(!this.match(')')){while(true){const expr=this.match('...')?this.parseSpreadElement():this.isolateCoverGrammar(this.parseAsyncArgument);args.push(expr);if(this.match(')')){break;}
this.expectCommaSeparator();if(this.match(')')){break;}}}
this.expect(')');return args;}
matchImportCall(){let match=this.matchKeyword('import');if(match){const state=this.scanner.saveState();this.scanner.scanComments();const next=this.scanner.lex();this.scanner.restoreState(state);match=(next.type===7)&&(next.value==='(');}
return match;}
parseImportCall(){const node=this.createNode();this.expectKeyword('import');return this.finalize(node,new Node.Import());}
parseLeftHandSideExpressionAllowCall(){const startToken=this.lookahead;const maybeAsync=this.matchContextualKeyword('async');const previousAllowIn=this.context.allowIn;this.context.allowIn=true;let expr;if(this.matchKeyword('super')&&this.context.inFunctionBody){expr=this.createNode();this.nextToken();expr=this.finalize(expr,new Node.Super());if(!this.match('(')&&!this.match('.')&&!this.match('[')){this.throwUnexpectedToken(this.lookahead);}}
else{expr=this.inheritCoverGrammar(this.matchKeyword('new')?this.parseNewExpression:this.parsePrimaryExpression);}
while(true){if(this.match('.')){this.context.isBindingElement=false;this.context.isAssignmentTarget=true;this.expect('.');const property=this.parseIdentifierName();expr=this.finalize(this.startNode(startToken),new Node.StaticMemberExpression(expr,property));}
else if(this.match('(')){const asyncArrow=maybeAsync&&(startToken.lineNumber===this.lookahead.lineNumber);this.context.isBindingElement=false;this.context.isAssignmentTarget=false;const args=asyncArrow?this.parseAsyncArguments():this.parseArguments();if(expr.type===syntax_1.Syntax.Import&&args.length!==1){this.tolerateError(messages_1.Messages.BadImportCallArity);}
expr=this.finalize(this.startNode(startToken),new Node.CallExpression(expr,args));if(asyncArrow&&this.match('=>')){for(let i=0;i<args.length;++i){this.reinterpretExpressionAsPattern(args[i]);}
expr={type:ArrowParameterPlaceHolder,params:args,async:true};}}
else if(this.match('[')){this.context.isBindingElement=false;this.context.isAssignmentTarget=true;this.expect('[');const property=this.isolateCoverGrammar(this.parseExpression);this.expect(']');expr=this.finalize(this.startNode(startToken),new Node.ComputedMemberExpression(expr,property));}
else if(this.lookahead.type===10&&this.lookahead.head){const quasi=this.parseTemplateLiteral();expr=this.finalize(this.startNode(startToken),new Node.TaggedTemplateExpression(expr,quasi));}
else{break;}}
this.context.allowIn=previousAllowIn;return expr;}
parseSuper(){const node=this.createNode();this.expectKeyword('super');if(!this.match('[')&&!this.match('.')){this.throwUnexpectedToken(this.lookahead);}
return this.finalize(node,new Node.Super());}
parseLeftHandSideExpression(){assert_1.assert(this.context.allowIn,'callee of new expression always allow in keyword.');const node=this.startNode(this.lookahead);let expr=(this.matchKeyword('super')&&this.context.inFunctionBody)?this.parseSuper():this.inheritCoverGrammar(this.matchKeyword('new')?this.parseNewExpression:this.parsePrimaryExpression);while(true){if(this.match('[')){this.context.isBindingElement=false;this.context.isAssignmentTarget=true;this.expect('[');const property=this.isolateCoverGrammar(this.parseExpression);this.expect(']');expr=this.finalize(node,new Node.ComputedMemberExpression(expr,property));}
else if(this.match('.')){this.context.isBindingElement=false;this.context.isAssignmentTarget=true;this.expect('.');const property=this.parseIdentifierName();expr=this.finalize(node,new Node.StaticMemberExpression(expr,property));}
else if(this.lookahead.type===10&&this.lookahead.head){const quasi=this.parseTemplateLiteral();expr=this.finalize(node,new Node.TaggedTemplateExpression(expr,quasi));}
else{break;}}
return expr;} 
parseUpdateExpression(){let expr;const startToken=this.lookahead;if(this.match('++')||this.match('--')){const node=this.startNode(startToken);const token=this.nextToken();expr=this.inheritCoverGrammar(this.parseUnaryExpression);if(this.context.strict&&expr.type===syntax_1.Syntax.Identifier&&this.scanner.isRestrictedWord(expr.name)){this.tolerateError(messages_1.Messages.StrictLHSPrefix);}
if(!this.context.isAssignmentTarget){this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);}
const prefix=true;expr=this.finalize(node,new Node.UpdateExpression(token.value,expr,prefix));this.context.isAssignmentTarget=false;this.context.isBindingElement=false;}
else{expr=this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall);if(!this.hasLineTerminator&&this.lookahead.type===7){if(this.match('++')||this.match('--')){if(this.context.strict&&expr.type===syntax_1.Syntax.Identifier&&this.scanner.isRestrictedWord(expr.name)){this.tolerateError(messages_1.Messages.StrictLHSPostfix);}
if(!this.context.isAssignmentTarget){this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);}
this.context.isAssignmentTarget=false;this.context.isBindingElement=false;const operator=this.nextToken().value;const prefix=false;expr=this.finalize(this.startNode(startToken),new Node.UpdateExpression(operator,expr,prefix));}}}
return expr;} 
parseAwaitExpression(){const node=this.createNode();this.nextToken();const argument=this.parseUnaryExpression();return this.finalize(node,new Node.AwaitExpression(argument));}
parseUnaryExpression(){let expr;if(this.match('+')||this.match('-')||this.match('~')||this.match('!')||this.matchKeyword('delete')||this.matchKeyword('void')||this.matchKeyword('typeof')){const node=this.startNode(this.lookahead);const token=this.nextToken();expr=this.inheritCoverGrammar(this.parseUnaryExpression);expr=this.finalize(node,new Node.UnaryExpression(token.value,expr));if(this.context.strict&&expr.operator==='delete'&&expr.argument.type===syntax_1.Syntax.Identifier){this.tolerateError(messages_1.Messages.StrictDelete);}
this.context.isAssignmentTarget=false;this.context.isBindingElement=false;}
else if(this.context.await&&this.matchContextualKeyword('await')){expr=this.parseAwaitExpression();}
else{expr=this.parseUpdateExpression();}
return expr;}
parseExponentiationExpression(){const startToken=this.lookahead;let expr=this.inheritCoverGrammar(this.parseUnaryExpression);if(expr.type!==syntax_1.Syntax.UnaryExpression&&this.match('**')){this.nextToken();this.context.isAssignmentTarget=false;this.context.isBindingElement=false;const left=expr;const right=this.isolateCoverGrammar(this.parseExponentiationExpression);expr=this.finalize(this.startNode(startToken),new Node.BinaryExpression('**',left,right));}
return expr;}






 
binaryPrecedence(token){const op=token.value;let precedence;if(token.type===7){precedence=this.operatorPrecedence[op]||0;}
else if(token.type===4){precedence=(op==='instanceof'||(this.context.allowIn&&op==='in'))?7:0;}
else{precedence=0;}
return precedence;}
parseBinaryExpression(){const startToken=this.lookahead;let expr=this.inheritCoverGrammar(this.parseExponentiationExpression);const token=this.lookahead;let prec=this.binaryPrecedence(token);if(prec>0){this.nextToken();this.context.isAssignmentTarget=false;this.context.isBindingElement=false;const markers=[startToken,this.lookahead];let left=expr;let right=this.isolateCoverGrammar(this.parseExponentiationExpression);const stack=[left,token.value,right];const precedences=[prec];while(true){prec=this.binaryPrecedence(this.lookahead);if(prec<=0){break;}
while((stack.length>2)&&(prec<=precedences[precedences.length-1])){right=stack.pop();const operator=stack.pop();precedences.pop();left=stack.pop();markers.pop();const node=this.startNode(markers[markers.length-1]);stack.push(this.finalize(node,new Node.BinaryExpression(operator,left,right)));}
stack.push(this.nextToken().value);precedences.push(prec);markers.push(this.lookahead);stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression));}
let i=stack.length-1;expr=stack[i];let lastMarker=markers.pop();while(i>1){const marker=markers.pop();const lastLineStart=lastMarker&&lastMarker.lineStart;const node=this.startNode(marker,lastLineStart);const operator=stack[i-1];expr=this.finalize(node,new Node.BinaryExpression(operator,stack[i-2],expr));i-=2;lastMarker=marker;}}
return expr;} 
parseConditionalExpression(){const startToken=this.lookahead;let expr=this.inheritCoverGrammar(this.parseBinaryExpression);if(this.match('?')){this.nextToken();const previousAllowIn=this.context.allowIn;this.context.allowIn=true;const consequent=this.isolateCoverGrammar(this.parseAssignmentExpression);this.context.allowIn=previousAllowIn;this.expect(':');const alternate=this.isolateCoverGrammar(this.parseAssignmentExpression);expr=this.finalize(this.startNode(startToken),new Node.ConditionalExpression(expr,consequent,alternate));this.context.isAssignmentTarget=false;this.context.isBindingElement=false;}
return expr;} 
checkPatternParam(options,param){switch(param.type){case syntax_1.Syntax.Identifier:this.validateParam(options,param,param.name);break;case syntax_1.Syntax.RestElement:this.checkPatternParam(options,param.argument);break;case syntax_1.Syntax.AssignmentPattern:this.checkPatternParam(options,param.left);break;case syntax_1.Syntax.ArrayPattern:for(let i=0;i<param.elements.length;i++){if(param.elements[i]!==null){this.checkPatternParam(options,param.elements[i]);}}
break;case syntax_1.Syntax.ObjectPattern:for(let i=0;i<param.properties.length;i++){const property=param.properties[i];this.checkPatternParam(options,(property.type===syntax_1.Syntax.RestElement)?property:property.value);}
break;default:break;}
options.simple=options.simple&&(param instanceof Node.Identifier);}
reinterpretAsCoverFormalsList(expr){let params=[expr];let options;let asyncArrow=false;switch(expr.type){case syntax_1.Syntax.Identifier:break;case ArrowParameterPlaceHolder:params=expr.params;asyncArrow=expr.async;break;default:return null;}
options={simple:true,paramSet:{}};for(let i=0;i<params.length;++i){const param=params[i];if(param.type===syntax_1.Syntax.AssignmentPattern){if(param.right.type===syntax_1.Syntax.YieldExpression){if(param.right.argument){this.throwUnexpectedToken(this.lookahead);}
param.right.type=syntax_1.Syntax.Identifier;param.right.name='yield';delete param.right.argument;delete param.right.delegate;}}
else if(asyncArrow&&param.type===syntax_1.Syntax.Identifier&&param.name==='await'){this.throwUnexpectedToken(this.lookahead);}
this.checkPatternParam(options,param);params[i]=param;}
if(this.context.strict||!this.context.allowYield){for(let i=0;i<params.length;++i){const param=params[i];if(param.type===syntax_1.Syntax.YieldExpression){this.throwUnexpectedToken(this.lookahead);}}}
if(options.message===messages_1.Messages.StrictParamDupe){const token=this.context.strict?options.stricted:options.firstRestricted;this.throwUnexpectedToken(token,options.message);}
return{simple:options.simple,params:params,stricted:options.stricted,firstRestricted:options.firstRestricted,message:options.message};}
parseAssignmentExpression(){let expr;if(!this.context.allowYield&&this.matchKeyword('yield')){expr=this.parseYieldExpression();}
else{const startToken=this.lookahead;let token=startToken;expr=this.parseConditionalExpression();if(token.type===3&&(token.lineNumber===this.lookahead.lineNumber)&&token.value==='async'){if(this.lookahead.type===3||this.matchKeyword('yield')){const arg=this.parsePrimaryExpression();this.reinterpretExpressionAsPattern(arg);expr={type:ArrowParameterPlaceHolder,params:[arg],async:true};}}
if(expr.type===ArrowParameterPlaceHolder||this.match('=>')){ this.context.isAssignmentTarget=false;this.context.isBindingElement=false;const isAsync=expr.async;const list=this.reinterpretAsCoverFormalsList(expr);if(list){if(this.hasLineTerminator){this.tolerateUnexpectedToken(this.lookahead);}
this.context.firstCoverInitializedNameError=null;const previousStrict=this.context.strict;const previousAllowStrictDirective=this.context.allowStrictDirective;this.context.allowStrictDirective=list.simple;const previousAllowYield=this.context.allowYield;const previousAwait=this.context.await;this.context.allowYield=true;this.context.await=isAsync;const node=this.startNode(startToken);this.expect('=>');let body;if(this.match('{')){const previousAllowIn=this.context.allowIn;this.context.allowIn=true;body=this.parseFunctionSourceElements();this.context.allowIn=previousAllowIn;}
else{body=this.isolateCoverGrammar(this.parseAssignmentExpression);}
const expression=body.type!==syntax_1.Syntax.BlockStatement;if(this.context.strict&&list.firstRestricted){this.throwUnexpectedToken(list.firstRestricted,list.message);}
if(this.context.strict&&list.stricted){this.tolerateUnexpectedToken(list.stricted,list.message);}
expr=isAsync?this.finalize(node,new Node.AsyncArrowFunctionExpression(list.params,body,expression)):this.finalize(node,new Node.ArrowFunctionExpression(list.params,body,expression));this.context.strict=previousStrict;this.context.allowStrictDirective=previousAllowStrictDirective;this.context.allowYield=previousAllowYield;this.context.await=previousAwait;}}
else{if(this.matchAssign()){if(!this.context.isAssignmentTarget){this.tolerateError(messages_1.Messages.InvalidLHSInAssignment);}
if(this.context.strict&&expr.type===syntax_1.Syntax.Identifier){const id=expr;if(this.scanner.isRestrictedWord(id.name)){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictLHSAssignment);}
if(this.scanner.isStrictModeReservedWord(id.name)){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictReservedWord);}}
if(!this.match('=')){this.context.isAssignmentTarget=false;this.context.isBindingElement=false;}
else{this.reinterpretExpressionAsPattern(expr);}
token=this.nextToken();const operator=token.value;const right=this.isolateCoverGrammar(this.parseAssignmentExpression);expr=this.finalize(this.startNode(startToken),new Node.AssignmentExpression(operator,expr,right));this.context.firstCoverInitializedNameError=null;}}}
return expr;} 
parseExpression(){const startToken=this.lookahead;let expr=this.isolateCoverGrammar(this.parseAssignmentExpression);if(this.match(',')){const expressions=[];expressions.push(expr);while(this.lookahead.type!==2){if(!this.match(',')){break;}
this.nextToken();expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression));}
expr=this.finalize(this.startNode(startToken),new Node.SequenceExpression(expressions));}
return expr;} 
parseStatementListItem(){let statement;this.context.isAssignmentTarget=true;this.context.isBindingElement=true;if(this.lookahead.type===4){switch(this.lookahead.value){case'export':if(!this.context.isModule){this.tolerateUnexpectedToken(this.lookahead,messages_1.Messages.IllegalExportDeclaration);}
statement=this.parseExportDeclaration();break;case'import':if(this.matchImportCall()){statement=this.parseExpressionStatement();}
else{if(!this.context.isModule){this.tolerateUnexpectedToken(this.lookahead,messages_1.Messages.IllegalImportDeclaration);}
statement=this.parseImportDeclaration();}
break;case'const':statement=this.parseLexicalDeclaration({inFor:false});break;case'function':statement=this.parseFunctionDeclaration();break;case'class':statement=this.parseClassDeclaration();break;case'let':statement=this.isLexicalDeclaration()?this.parseLexicalDeclaration({inFor:false}):this.parseStatement();break;default:statement=this.parseStatement();break;}}
else{statement=this.parseStatement();}
return statement;}
parseBlock(){const node=this.createNode();this.expect('{');const block=[];while(true){if(this.match('}')){break;}
block.push(this.parseStatementListItem());}
this.expect('}');return this.finalize(node,new Node.BlockStatement(block));} 
parseLexicalBinding(kind,options){const node=this.createNode();const params=[];const id=this.parsePattern(params,kind);if(this.context.strict&&id.type===syntax_1.Syntax.Identifier){if(this.scanner.isRestrictedWord(id.name)){this.tolerateError(messages_1.Messages.StrictVarName);}}
let init=null;if(kind==='const'){if(!this.matchKeyword('in')&&!this.matchContextualKeyword('of')){if(this.match('=')){this.nextToken();init=this.isolateCoverGrammar(this.parseAssignmentExpression);}
else{this.throwError(messages_1.Messages.DeclarationMissingInitializer,'const');}}}
else if((!options.inFor&&id.type!==syntax_1.Syntax.Identifier)||this.match('=')){this.expect('=');init=this.isolateCoverGrammar(this.parseAssignmentExpression);}
return this.finalize(node,new Node.VariableDeclarator(id,init));}
parseBindingList(kind,options){const list=[this.parseLexicalBinding(kind,options)];while(this.match(',')){this.nextToken();list.push(this.parseLexicalBinding(kind,options));}
return list;}
isLexicalDeclaration(){const state=this.scanner.saveState();this.scanner.scanComments();const next=this.scanner.lex();this.scanner.restoreState(state);return(next.type===3)||(next.type===7&&next.value==='[')||(next.type===7&&next.value==='{')||(next.type===4&&next.value==='let')||(next.type===4&&next.value==='yield');}
parseLexicalDeclaration(options){const node=this.createNode();const kind=this.nextToken().value;assert_1.assert(kind==='let'||kind==='const','Lexical declaration must be either let or const');const declarations=this.parseBindingList(kind,options);this.consumeSemicolon();return this.finalize(node,new Node.VariableDeclaration(declarations,kind));} 
parseBindingRestElement(params,kind){const node=this.createNode();this.expect('...');const arg=this.parsePattern(params,kind);return this.finalize(node,new Node.RestElement(arg));}
parseArrayPattern(params,kind){const node=this.createNode();this.expect('[');const elements=[];while(!this.match(']')){if(this.match(',')){this.nextToken();elements.push(null);}
else{if(this.match('...')){elements.push(this.parseBindingRestElement(params,kind));break;}
else{elements.push(this.parsePatternWithDefault(params,kind));}
if(!this.match(']')){this.expect(',');}}}
this.expect(']');return this.finalize(node,new Node.ArrayPattern(elements));}
parsePropertyPattern(params,kind){const node=this.createNode();let computed=false;let shorthand=false;const method=false;let key;let value;if(this.lookahead.type===3){const keyToken=this.lookahead;key=this.parseVariableIdentifier();const init=this.finalize(node,new Node.Identifier(keyToken.value));if(this.match('=')){params.push(keyToken);shorthand=true;this.nextToken();const expr=this.parseAssignmentExpression();value=this.finalize(this.startNode(keyToken),new Node.AssignmentPattern(init,expr));}
else if(!this.match(':')){params.push(keyToken);shorthand=true;value=init;}
else{this.expect(':');value=this.parsePatternWithDefault(params,kind);}}
else{computed=this.match('[');key=this.parseObjectPropertyKey();this.expect(':');value=this.parsePatternWithDefault(params,kind);}
return this.finalize(node,new Node.Property('init',key,computed,value,method,shorthand));}
parseRestProperty(params,kind){const node=this.createNode();this.expect('...');const arg=this.parsePattern(params);if(this.match('=')){this.throwError(messages_1.Messages.DefaultRestProperty);}
if(!this.match('}')){this.throwError(messages_1.Messages.PropertyAfterRestProperty);}
return this.finalize(node,new Node.RestElement(arg));}
parseObjectPattern(params,kind){const node=this.createNode();const properties=[];this.expect('{');while(!this.match('}')){properties.push(this.match('...')?this.parseRestProperty(params,kind):this.parsePropertyPattern(params,kind));if(!this.match('}')){this.expect(',');}}
this.expect('}');return this.finalize(node,new Node.ObjectPattern(properties));}
parsePattern(params,kind){let pattern;if(this.match('[')){pattern=this.parseArrayPattern(params,kind);}
else if(this.match('{')){pattern=this.parseObjectPattern(params,kind);}
else{if(this.matchKeyword('let')&&(kind==='const'||kind==='let')){this.tolerateUnexpectedToken(this.lookahead,messages_1.Messages.LetInLexicalBinding);}
params.push(this.lookahead);pattern=this.parseVariableIdentifier(kind);}
return pattern;}
parsePatternWithDefault(params,kind){const startToken=this.lookahead;let pattern=this.parsePattern(params,kind);if(this.match('=')){this.nextToken();const previousAllowYield=this.context.allowYield;this.context.allowYield=true;const right=this.isolateCoverGrammar(this.parseAssignmentExpression);this.context.allowYield=previousAllowYield;pattern=this.finalize(this.startNode(startToken),new Node.AssignmentPattern(pattern,right));}
return pattern;} 
parseVariableIdentifier(kind){const node=this.createNode();const token=this.nextToken();if(token.type===4&&token.value==='yield'){if(this.context.strict){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictReservedWord);}
else if(!this.context.allowYield){this.throwUnexpectedToken(token);}}
else if(token.type!==3){if(this.context.strict&&token.type===4&&this.scanner.isStrictModeReservedWord(token.value)){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictReservedWord);}
else{if(this.context.strict||token.value!=='let'||kind!=='var'){this.throwUnexpectedToken(token);}}}
else if((this.context.isModule||this.context.await)&&token.type===3&&token.value==='await'){this.tolerateUnexpectedToken(token);}
return this.finalize(node,new Node.Identifier(token.value));}
parseVariableDeclaration(options){const node=this.createNode();const params=[];const id=this.parsePattern(params,'var');if(this.context.strict&&id.type===syntax_1.Syntax.Identifier){if(this.scanner.isRestrictedWord(id.name)){this.tolerateError(messages_1.Messages.StrictVarName);}}
let init=null;if(this.match('=')){this.nextToken();init=this.isolateCoverGrammar(this.parseAssignmentExpression);}
else if(id.type!==syntax_1.Syntax.Identifier&&!options.inFor){this.expect('=');}
return this.finalize(node,new Node.VariableDeclarator(id,init));}
parseVariableDeclarationList(options){const opt={inFor:options.inFor};const list=[];list.push(this.parseVariableDeclaration(opt));while(this.match(',')){this.nextToken();list.push(this.parseVariableDeclaration(opt));}
return list;}
parseVariableStatement(){const node=this.createNode();this.expectKeyword('var');const declarations=this.parseVariableDeclarationList({inFor:false});this.consumeSemicolon();return this.finalize(node,new Node.VariableDeclaration(declarations,'var'));} 
parseEmptyStatement(){const node=this.createNode();this.expect(';');return this.finalize(node,new Node.EmptyStatement());} 
parseExpressionStatement(){const node=this.createNode();const expr=this.parseExpression();this.consumeSemicolon();return this.finalize(node,new Node.ExpressionStatement(expr));} 
parseIfClause(){if(this.context.strict&&this.matchKeyword('function')){this.tolerateError(messages_1.Messages.StrictFunction);}
return this.parseStatement();}
parseIfStatement(){const node=this.createNode();let consequent;let alternate=null;this.expectKeyword('if');this.expect('(');const test=this.parseExpression();if(!this.match(')')&&this.config.tolerant){this.tolerateUnexpectedToken(this.nextToken());consequent=this.finalize(this.createNode(),new Node.EmptyStatement());}
else{this.expect(')');consequent=this.parseIfClause();if(this.matchKeyword('else')){this.nextToken();alternate=this.parseIfClause();}}
return this.finalize(node,new Node.IfStatement(test,consequent,alternate));} 
parseDoWhileStatement(){const node=this.createNode();this.expectKeyword('do');const previousInIteration=this.context.inIteration;this.context.inIteration=true;const body=this.parseStatement();this.context.inIteration=previousInIteration;this.expectKeyword('while');this.expect('(');const test=this.parseExpression();if(!this.match(')')&&this.config.tolerant){this.tolerateUnexpectedToken(this.nextToken());}
else{this.expect(')');if(this.match(';')){this.nextToken();}}
return this.finalize(node,new Node.DoWhileStatement(body,test));} 
parseWhileStatement(){const node=this.createNode();let body;this.expectKeyword('while');this.expect('(');const test=this.parseExpression();if(!this.match(')')&&this.config.tolerant){this.tolerateUnexpectedToken(this.nextToken());body=this.finalize(this.createNode(),new Node.EmptyStatement());}
else{this.expect(')');const previousInIteration=this.context.inIteration;this.context.inIteration=true;body=this.parseStatement();this.context.inIteration=previousInIteration;}
return this.finalize(node,new Node.WhileStatement(test,body));}
 
parseForStatement(){let init=null;let test=null;let update=null;let forIn=true;let isForAwaitOf=false;let left,right;const node=this.createNode();this.expectKeyword('for');if(this.matchContextualKeyword('await')){if(!this.context.await){this.throwUnexpectedToken(this.lookahead,messages_1.Messages.ForAwaitInNonAsync);}
this.nextToken();isForAwaitOf=true;}
this.expect('(');if(this.match(';')){if(isForAwaitOf){this.throwUnexpectedToken(this.lookahead,messages_1.Messages.ForAwaitOfSemicolon);}
this.nextToken();}
else{if(this.matchKeyword('var')){init=this.createNode();this.nextToken();const previousAllowIn=this.context.allowIn;this.context.allowIn=false;const declarations=this.parseVariableDeclarationList({inFor:true});this.context.allowIn=previousAllowIn;if(declarations.length===1&&this.matchKeyword('in')){if(isForAwaitOf){this.throwUnexpectedToken(this.lookahead,messages_1.Messages.ForAwaitOfSawIn);}
const decl=declarations[0];if(decl.init&&(decl.id.type===syntax_1.Syntax.ArrayPattern||decl.id.type===syntax_1.Syntax.ObjectPattern||this.context.strict)){this.tolerateError(messages_1.Messages.ForInOfLoopInitializer,'for-in');}
init=this.finalize(init,new Node.VariableDeclaration(declarations,'var'));this.nextToken();left=init;right=this.parseExpression();init=null;}
else if(declarations.length===1&&declarations[0].init===null&&this.matchContextualKeyword('of')){init=this.finalize(init,new Node.VariableDeclaration(declarations,'var'));this.nextToken();left=init;right=this.parseAssignmentExpression();init=null;forIn=false;}
else{init=this.finalize(init,new Node.VariableDeclaration(declarations,'var'));this.expect(';');}}
else if(this.matchKeyword('const')||this.matchKeyword('let')){init=this.createNode();const kind=this.nextToken().value;if(!this.context.strict&&this.lookahead.value==='in'){init=this.finalize(init,new Node.Identifier(kind));this.nextToken();left=init;right=this.parseExpression();init=null;}
else{const previousAllowIn=this.context.allowIn;this.context.allowIn=false;const declarations=this.parseBindingList(kind,{inFor:true});this.context.allowIn=previousAllowIn;if(declarations.length===1&&declarations[0].init===null&&this.matchKeyword('in')){if(isForAwaitOf){this.throwUnexpectedToken(this.lookahead,messages_1.Messages.ForAwaitOfSawIn);}
init=this.finalize(init,new Node.VariableDeclaration(declarations,kind));this.nextToken();left=init;right=this.parseExpression();init=null;}
else if(declarations.length===1&&declarations[0].init===null&&this.matchContextualKeyword('of')){init=this.finalize(init,new Node.VariableDeclaration(declarations,kind));this.nextToken();left=init;right=this.parseAssignmentExpression();init=null;forIn=false;}
else{this.consumeSemicolon();init=this.finalize(init,new Node.VariableDeclaration(declarations,kind));}}}
else{const initStartToken=this.lookahead;const previousIsBindingElement=this.context.isBindingElement;const previousIsAssignmentTarget=this.context.isAssignmentTarget;const previousFirstCoverInitializedNameError=this.context.firstCoverInitializedNameError;const previousAllowIn=this.context.allowIn;this.context.allowIn=false;init=this.inheritCoverGrammar(this.parseAssignmentExpression);this.context.allowIn=previousAllowIn;if(this.matchKeyword('in')){if(!this.context.isAssignmentTarget||init.type===syntax_1.Syntax.AssignmentExpression){this.tolerateError(messages_1.Messages.InvalidLHSInForIn);}
if(isForAwaitOf){this.throwUnexpectedToken(this.lookahead,messages_1.Messages.ForAwaitOfSawIn);}
this.nextToken();this.reinterpretExpressionAsPattern(init);left=init;right=this.parseExpression();init=null;}
else if(this.matchContextualKeyword('of')){if(!this.context.isAssignmentTarget||init.type===syntax_1.Syntax.AssignmentExpression){this.tolerateError(messages_1.Messages.InvalidLHSInForLoop);}
this.nextToken();this.reinterpretExpressionAsPattern(init);left=init;right=this.parseAssignmentExpression();init=null;forIn=false;}
else{this.context.isBindingElement=previousIsBindingElement;this.context.isAssignmentTarget=previousIsAssignmentTarget;this.context.firstCoverInitializedNameError=previousFirstCoverInitializedNameError;if(this.match(',')){const initSeq=[init];while(this.match(',')){this.nextToken();initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression));}
init=this.finalize(this.startNode(initStartToken),new Node.SequenceExpression(initSeq));}
this.expect(';');}}}
if(typeof left==='undefined'){if(!this.match(';')){test=this.isolateCoverGrammar(this.parseExpression);}
this.expect(';');if(!this.match(')')){update=this.isolateCoverGrammar(this.parseExpression);}}
let body;if(!this.match(')')&&this.config.tolerant){this.tolerateUnexpectedToken(this.nextToken());body=this.finalize(this.createNode(),new Node.EmptyStatement());}
else{this.expect(')');const previousInIteration=this.context.inIteration;this.context.inIteration=true;body=this.isolateCoverGrammar(this.parseStatement);this.context.inIteration=previousInIteration;}
return(typeof left==='undefined')?this.finalize(node,new Node.ForStatement(init,test,update,body)):forIn?this.finalize(node,new Node.ForInStatement(left,right,body)):this.finalize(node,new Node.ForOfStatement(left,right,body,isForAwaitOf));} 
parseContinueStatement(){const node=this.createNode();this.expectKeyword('continue');let label=null;if(this.lookahead.type===3&&!this.hasLineTerminator){const id=this.parseVariableIdentifier();label=id;const key='$'+id.name;if(!Object.prototype.hasOwnProperty.call(this.context.labelSet,key)){this.throwError(messages_1.Messages.UnknownLabel,id.name);}}
this.consumeSemicolon();if(label===null&&!this.context.inIteration){this.throwError(messages_1.Messages.IllegalContinue);}
return this.finalize(node,new Node.ContinueStatement(label));} 
parseBreakStatement(){const node=this.createNode();this.expectKeyword('break');let label=null;if(this.lookahead.type===3&&!this.hasLineTerminator){const id=this.parseVariableIdentifier();const key='$'+id.name;if(!Object.prototype.hasOwnProperty.call(this.context.labelSet,key)){this.throwError(messages_1.Messages.UnknownLabel,id.name);}
label=id;}
this.consumeSemicolon();if(label===null&&!this.context.inIteration&&!this.context.inSwitch){this.throwError(messages_1.Messages.IllegalBreak);}
return this.finalize(node,new Node.BreakStatement(label));} 
parseReturnStatement(){if(!this.context.inFunctionBody){this.tolerateError(messages_1.Messages.IllegalReturn);}
const node=this.createNode();this.expectKeyword('return');const hasArgument=(!this.match(';')&&!this.match('}')&&!this.hasLineTerminator&&this.lookahead.type!==2)||this.lookahead.type===8||this.lookahead.type===10;const argument=hasArgument?this.parseExpression():null;this.consumeSemicolon();return this.finalize(node,new Node.ReturnStatement(argument));} 
parseWithStatement(){if(this.context.strict){this.tolerateError(messages_1.Messages.StrictModeWith);}
const node=this.createNode();let body;this.expectKeyword('with');this.expect('(');const object=this.parseExpression();if(!this.match(')')&&this.config.tolerant){this.tolerateUnexpectedToken(this.nextToken());body=this.finalize(this.createNode(),new Node.EmptyStatement());}
else{this.expect(')');body=this.parseStatement();}
return this.finalize(node,new Node.WithStatement(object,body));} 
parseSwitchCase(){const node=this.createNode();let test;if(this.matchKeyword('default')){this.nextToken();test=null;}
else{this.expectKeyword('case');test=this.parseExpression();}
this.expect(':');const consequent=[];while(true){if(this.match('}')||this.matchKeyword('default')||this.matchKeyword('case')){break;}
consequent.push(this.parseStatementListItem());}
return this.finalize(node,new Node.SwitchCase(test,consequent));}
parseSwitchStatement(){const node=this.createNode();this.expectKeyword('switch');this.expect('(');const discriminant=this.parseExpression();this.expect(')');const previousInSwitch=this.context.inSwitch;this.context.inSwitch=true;const cases=[];let defaultFound=false;this.expect('{');while(true){if(this.match('}')){break;}
const clause=this.parseSwitchCase();if(clause.test===null){if(defaultFound){this.throwError(messages_1.Messages.MultipleDefaultsInSwitch);}
defaultFound=true;}
cases.push(clause);}
this.expect('}');this.context.inSwitch=previousInSwitch;return this.finalize(node,new Node.SwitchStatement(discriminant,cases));} 
parseLabelledStatement(){const node=this.createNode();const expr=this.parseExpression();let statement;if((expr.type===syntax_1.Syntax.Identifier)&&this.match(':')){this.nextToken();const id=expr;const key='$'+id.name;if(Object.prototype.hasOwnProperty.call(this.context.labelSet,key)){this.throwError(messages_1.Messages.Redeclaration,'Label',id.name);}
this.context.labelSet[key]=true;let body;if(this.matchKeyword('class')){this.tolerateUnexpectedToken(this.lookahead);body=this.parseClassDeclaration();}
else if(this.matchKeyword('function')){const token=this.lookahead;const declaration=this.parseFunctionDeclaration();if(this.context.strict){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictFunction);}
else if(declaration.generator){this.tolerateUnexpectedToken(token,messages_1.Messages.GeneratorInLegacyContext);}
body=declaration;}
else{body=this.parseStatement();}
delete this.context.labelSet[key];statement=new Node.LabeledStatement(id,body);}
else{this.consumeSemicolon();statement=new Node.ExpressionStatement(expr);}
return this.finalize(node,statement);} 
parseThrowStatement(){const node=this.createNode();this.expectKeyword('throw');if(this.hasLineTerminator){this.throwError(messages_1.Messages.NewlineAfterThrow);}
const argument=this.parseExpression();this.consumeSemicolon();return this.finalize(node,new Node.ThrowStatement(argument));} 
parseCatchClause(){const node=this.createNode();let body;this.expectKeyword('catch');if(!this.match('(')){body=this.parseBlock();return this.finalize(node,new Node.CatchClause(null,body));}
this.expect('(');if(this.match(')')){this.throwUnexpectedToken(this.lookahead);}
const params=[];const param=this.parsePattern(params);const paramMap={};for(let i=0;i<params.length;i++){const key='$'+params[i].value;if(Object.prototype.hasOwnProperty.call(paramMap,key)){this.tolerateError(messages_1.Messages.DuplicateBinding,params[i].value);}
paramMap[key]=true;}
if(this.context.strict&&param.type===syntax_1.Syntax.Identifier){if(this.scanner.isRestrictedWord(param.name)){this.tolerateError(messages_1.Messages.StrictCatchVariable);}}
this.expect(')');body=this.parseBlock();return this.finalize(node,new Node.CatchClause(param,body));}
parseFinallyClause(){this.expectKeyword('finally');return this.parseBlock();}
parseTryStatement(){const node=this.createNode();this.expectKeyword('try');const block=this.parseBlock();const handler=this.matchKeyword('catch')?this.parseCatchClause():null;const finalizer=this.matchKeyword('finally')?this.parseFinallyClause():null;if(!handler&&!finalizer){this.throwError(messages_1.Messages.NoCatchOrFinally);}
return this.finalize(node,new Node.TryStatement(block,handler,finalizer));} 
parseDebuggerStatement(){const node=this.createNode();this.expectKeyword('debugger');this.consumeSemicolon();return this.finalize(node,new Node.DebuggerStatement());} 
parseStatement(){let statement;switch(this.lookahead.type){case 1:case 5:case 6:case 8:case 10:case 9:statement=this.parseExpressionStatement();break;case 7:const value=this.lookahead.value;if(value==='{'){statement=this.parseBlock();}
else if(value==='('){statement=this.parseExpressionStatement();}
else if(value===';'){statement=this.parseEmptyStatement();}
else{statement=this.parseExpressionStatement();}
break;case 3:statement=this.matchAsyncFunction()?this.parseFunctionDeclaration():this.parseLabelledStatement();break;case 4:switch(this.lookahead.value){case'break':statement=this.parseBreakStatement();break;case'continue':statement=this.parseContinueStatement();break;case'debugger':statement=this.parseDebuggerStatement();break;case'do':statement=this.parseDoWhileStatement();break;case'for':statement=this.parseForStatement();break;case'function':statement=this.parseFunctionDeclaration();break;case'if':statement=this.parseIfStatement();break;case'return':statement=this.parseReturnStatement();break;case'switch':statement=this.parseSwitchStatement();break;case'throw':statement=this.parseThrowStatement();break;case'try':statement=this.parseTryStatement();break;case'var':statement=this.parseVariableStatement();break;case'while':statement=this.parseWhileStatement();break;case'with':statement=this.parseWithStatement();break;default:statement=this.parseExpressionStatement();break;}
break;default:statement=this.throwUnexpectedToken(this.lookahead);}
return statement;} 
parseFunctionSourceElements(){const node=this.createNode();this.expect('{');const body=this.parseDirectivePrologues();const previousLabelSet=this.context.labelSet;const previousInIteration=this.context.inIteration;const previousInSwitch=this.context.inSwitch;const previousInFunctionBody=this.context.inFunctionBody;this.context.labelSet={};this.context.inIteration=false;this.context.inSwitch=false;this.context.inFunctionBody=true;while(this.lookahead.type!==2){if(this.match('}')){break;}
body.push(this.parseStatementListItem());}
this.expect('}');this.context.labelSet=previousLabelSet;this.context.inIteration=previousInIteration;this.context.inSwitch=previousInSwitch;this.context.inFunctionBody=previousInFunctionBody;return this.finalize(node,new Node.BlockStatement(body));}
validateParam(options,param,name){const key='$'+name;if(this.context.strict){if(this.scanner.isRestrictedWord(name)){options.stricted=param;options.message=messages_1.Messages.StrictParamName;}
if(Object.prototype.hasOwnProperty.call(options.paramSet,key)){options.stricted=param;options.message=messages_1.Messages.StrictParamDupe;}}
else if(!options.firstRestricted){if(this.scanner.isRestrictedWord(name)){options.firstRestricted=param;options.message=messages_1.Messages.StrictParamName;}
else if(this.scanner.isStrictModeReservedWord(name)){options.firstRestricted=param;options.message=messages_1.Messages.StrictReservedWord;}
else if(Object.prototype.hasOwnProperty.call(options.paramSet,key)){options.stricted=param;options.message=messages_1.Messages.StrictParamDupe;}}
if(typeof Object.defineProperty==='function'){Object.defineProperty(options.paramSet,key,{value:true,enumerable:true,writable:true,configurable:true});}
else{options.paramSet[key]=true;}}
parseRestElement(params){const node=this.createNode();this.expect('...');const arg=this.parsePattern(params);if(this.match('=')){this.throwError(messages_1.Messages.DefaultRestParameter);}
if(!this.match(')')){this.throwError(messages_1.Messages.ParameterAfterRestParameter);}
return this.finalize(node,new Node.RestElement(arg));}
parseFormalParameter(options){const params=[];const param=this.match('...')?this.parseRestElement(params):this.parsePatternWithDefault(params);for(let i=0;i<params.length;i++){this.validateParam(options,params[i],params[i].value);}
options.simple=options.simple&&(param instanceof Node.Identifier);options.params.push(param);}
parseFormalParameters(firstRestricted){let options;options={simple:true,params:[],firstRestricted:firstRestricted};this.expect('(');if(!this.match(')')){options.paramSet={};while(this.lookahead.type!==2){this.parseFormalParameter(options);if(this.match(')')){break;}
this.expect(',');if(this.match(')')){break;}}}
this.expect(')');return{simple:options.simple,params:options.params,stricted:options.stricted,firstRestricted:options.firstRestricted,message:options.message};}
matchAsyncFunction(){let match=this.matchContextualKeyword('async');if(match){const state=this.scanner.saveState();this.scanner.scanComments();const next=this.scanner.lex();this.scanner.restoreState(state);match=(state.lineNumber===next.lineNumber)&&(next.type===4)&&(next.value==='function');}
return match;}
parseFunctionDeclaration(identifierIsOptional){const node=this.createNode();const isAsync=this.matchContextualKeyword('async');if(isAsync){this.nextToken();}
this.expectKeyword('function');const isGenerator=this.match('*');if(isGenerator){this.nextToken();}
let message;let id=null;let firstRestricted=null;if(!identifierIsOptional||!this.match('(')){const token=this.lookahead;id=this.parseVariableIdentifier();if(this.context.strict){if(this.scanner.isRestrictedWord(token.value)){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictFunctionName);}}
else{if(this.scanner.isRestrictedWord(token.value)){firstRestricted=token;message=messages_1.Messages.StrictFunctionName;}
else if(this.scanner.isStrictModeReservedWord(token.value)){firstRestricted=token;message=messages_1.Messages.StrictReservedWord;}}}
const previousAllowAwait=this.context.await;const previousAllowYield=this.context.allowYield;this.context.await=isAsync;this.context.allowYield=!isGenerator;const formalParameters=this.parseFormalParameters(firstRestricted);const params=formalParameters.params;const stricted=formalParameters.stricted;firstRestricted=formalParameters.firstRestricted;if(formalParameters.message){message=formalParameters.message;}
const previousStrict=this.context.strict;const previousAllowStrictDirective=this.context.allowStrictDirective;this.context.allowStrictDirective=formalParameters.simple;const body=this.parseFunctionSourceElements();if(this.context.strict&&firstRestricted){this.throwUnexpectedToken(firstRestricted,message);}
if(this.context.strict&&stricted){this.tolerateUnexpectedToken(stricted,message);}
this.context.strict=previousStrict;this.context.allowStrictDirective=previousAllowStrictDirective;this.context.await=previousAllowAwait;this.context.allowYield=previousAllowYield;return isAsync?this.finalize(node,new Node.AsyncFunctionDeclaration(id,params,body,isGenerator)):this.finalize(node,new Node.FunctionDeclaration(id,params,body,isGenerator));}
parseFunctionExpression(){const node=this.createNode();const isAsync=this.matchContextualKeyword('async');if(isAsync){this.nextToken();}
this.expectKeyword('function');const isGenerator=this.match('*');if(isGenerator){this.nextToken();}
let message;let id=null;let firstRestricted;const previousAllowAwait=this.context.await;const previousAllowYield=this.context.allowYield;this.context.await=isAsync;this.context.allowYield=!isGenerator;if(!this.match('(')){const token=this.lookahead;id=(!this.context.strict&&!isGenerator&&this.matchKeyword('yield'))?this.parseIdentifierName():this.parseVariableIdentifier();if(this.context.strict){if(this.scanner.isRestrictedWord(token.value)){this.tolerateUnexpectedToken(token,messages_1.Messages.StrictFunctionName);}}
else{if(this.scanner.isRestrictedWord(token.value)){firstRestricted=token;message=messages_1.Messages.StrictFunctionName;}
else if(this.scanner.isStrictModeReservedWord(token.value)){firstRestricted=token;message=messages_1.Messages.StrictReservedWord;}}}
const formalParameters=this.parseFormalParameters(firstRestricted);const params=formalParameters.params;const stricted=formalParameters.stricted;firstRestricted=formalParameters.firstRestricted;if(formalParameters.message){message=formalParameters.message;}
const previousStrict=this.context.strict;const previousAllowStrictDirective=this.context.allowStrictDirective;this.context.allowStrictDirective=formalParameters.simple;const body=this.parseFunctionSourceElements();if(this.context.strict&&firstRestricted){this.throwUnexpectedToken(firstRestricted,message);}
if(this.context.strict&&stricted){this.tolerateUnexpectedToken(stricted,message);}
this.context.strict=previousStrict;this.context.allowStrictDirective=previousAllowStrictDirective;this.context.await=previousAllowAwait;this.context.allowYield=previousAllowYield;return isAsync?this.finalize(node,new Node.AsyncFunctionExpression(id,params,body,isGenerator)):this.finalize(node,new Node.FunctionExpression(id,params,body,isGenerator));} 
parseDirective(){const token=this.lookahead;const node=this.createNode();const expr=this.parseExpression();const directive=(expr.type===syntax_1.Syntax.Literal)?this.getTokenRaw(token).slice(1,-1):null;this.consumeSemicolon();return this.finalize(node,directive?new Node.Directive(expr,directive):new Node.ExpressionStatement(expr));}
parseDirectivePrologues(){let firstRestricted=null;const body=[];while(true){const token=this.lookahead;if(token.type!==8){break;}
const statement=this.parseDirective();body.push(statement);const directive=statement.directive;if(typeof directive!=='string'){break;}
if(directive==='use strict'){this.context.strict=true;if(firstRestricted){this.tolerateUnexpectedToken(firstRestricted,messages_1.Messages.StrictOctalLiteral);}
if(!this.context.allowStrictDirective){this.tolerateUnexpectedToken(token,messages_1.Messages.IllegalLanguageModeDirective);}}
else{if(!firstRestricted&&token.octal){firstRestricted=token;}}}
return body;} 
qualifiedPropertyName(token){switch(token.type){case 3:case 8:case 1:case 5:case 6:case 4:return true;case 7:return token.value==='[';default:break;}
return false;}
parseGetterMethod(){const node=this.createNode();const isGenerator=false;const previousAllowYield=this.context.allowYield;this.context.allowYield=!isGenerator;const formalParameters=this.parseFormalParameters();if(formalParameters.params.length>0){this.tolerateError(messages_1.Messages.BadGetterArity);}
const method=this.parsePropertyMethod(formalParameters);this.context.allowYield=previousAllowYield;return this.finalize(node,new Node.FunctionExpression(null,formalParameters.params,method,isGenerator));}
parseSetterMethod(){const node=this.createNode();const isGenerator=false;const previousAllowYield=this.context.allowYield;this.context.allowYield=!isGenerator;const formalParameters=this.parseFormalParameters();if(formalParameters.params.length!==1){this.tolerateError(messages_1.Messages.BadSetterArity);}
else if(formalParameters.params[0]instanceof Node.RestElement){this.tolerateError(messages_1.Messages.BadSetterRestParameter);}
const method=this.parsePropertyMethod(formalParameters);this.context.allowYield=previousAllowYield;return this.finalize(node,new Node.FunctionExpression(null,formalParameters.params,method,isGenerator));}
parseGeneratorMethod(){const node=this.createNode();const isGenerator=true;const previousAllowYield=this.context.allowYield;this.context.allowYield=true;const params=this.parseFormalParameters();this.context.allowYield=false;const method=this.parsePropertyMethod(params);this.context.allowYield=previousAllowYield;return this.finalize(node,new Node.FunctionExpression(null,params.params,method,isGenerator));} 
isStartOfExpression(){let start=true;const value=this.lookahead.value;switch(this.lookahead.type){case 7:start=(value==='[')||(value==='(')||(value==='{')||(value==='+')||(value==='-')||(value==='!')||(value==='~')||(value==='++')||(value==='--')||(value==='/')||(value==='/='); break;case 4:start=(value==='class')||(value==='delete')||(value==='function')||(value==='let')||(value==='new')||(value==='super')||(value==='this')||(value==='typeof')||(value==='void')||(value==='yield');break;default:break;}
return start;}
parseYieldExpression(){const node=this.createNode();this.expectKeyword('yield');let argument=null;let delegate=false;if(!this.hasLineTerminator){const previousAllowYield=this.context.allowYield;this.context.allowYield=false;delegate=this.match('*');if(delegate){this.nextToken();argument=this.parseAssignmentExpression();}
else if(this.isStartOfExpression()){argument=this.parseAssignmentExpression();}
this.context.allowYield=previousAllowYield;}
return this.finalize(node,new Node.YieldExpression(argument,delegate));} 
parseClassElement(hasConstructor){let token=this.lookahead;const node=this.createNode();let kind='';let key=null;let value=null;let computed=false;let method=false;let isStatic=false;let isAsync=false;let isAsyncGenerator=false;if(this.match('*')){this.nextToken();}
else{computed=this.match('[');key=this.parseObjectPropertyKey();const id=key;if(id.name==='static'&&(this.qualifiedPropertyName(this.lookahead)||this.match('*'))){token=this.lookahead;isStatic=true;computed=this.match('[');if(this.match('*')){this.nextToken();}
else{key=this.parseObjectPropertyKey();}}
if((token.type===3)&&!this.hasLineTerminator&&(token.value==='async')){const punctuator=this.lookahead.value;if(punctuator!==':'&&punctuator!=='('){isAsync=true;isAsyncGenerator=this.match('*');if(isAsyncGenerator){this.nextToken();}
token=this.lookahead;key=this.parseObjectPropertyKey();if(token.type===3&&token.value==='constructor'){this.tolerateUnexpectedToken(token,messages_1.Messages.ConstructorIsAsync);}}}}
const lookaheadPropertyKey=this.qualifiedPropertyName(this.lookahead);if(token.type===3){if(token.value==='get'&&lookaheadPropertyKey){kind='get';computed=this.match('[');key=this.parseObjectPropertyKey();this.context.allowYield=false;value=this.parseGetterMethod();}
else if(token.value==='set'&&lookaheadPropertyKey){kind='set';computed=this.match('[');key=this.parseObjectPropertyKey();value=this.parseSetterMethod();}}
else if(token.type===7&&token.value==='*'&&lookaheadPropertyKey){kind='init';computed=this.match('[');key=this.parseObjectPropertyKey();value=this.parseGeneratorMethod();method=true;}
if(!kind&&key&&this.match('(')){kind='init';value=isAsync?this.parsePropertyMethodAsyncFunction(isAsyncGenerator):this.parsePropertyMethodFunction();method=true;}
if(!kind){this.throwUnexpectedToken(this.lookahead);}
if(kind==='init'){kind='method';}
if(!computed){if(isStatic&&this.isPropertyKey(key,'prototype')){this.throwUnexpectedToken(token,messages_1.Messages.StaticPrototype);}
if(!isStatic&&this.isPropertyKey(key,'constructor')){if(kind!=='method'||!method||(value&&value.generator)){this.throwUnexpectedToken(token,messages_1.Messages.ConstructorSpecialMethod);}
if(hasConstructor.value){this.throwUnexpectedToken(token,messages_1.Messages.DuplicateConstructor);}
else{hasConstructor.value=true;}
kind='constructor';}}
return this.finalize(node,new Node.MethodDefinition(key,computed,value,kind,isStatic));}
parseClassElementList(){const body=[];const hasConstructor={value:false};this.expect('{');while(!this.match('}')){if(this.match(';')){this.nextToken();}
else{body.push(this.parseClassElement(hasConstructor));}}
this.expect('}');return body;}
parseClassBody(){const node=this.createNode();const elementList=this.parseClassElementList();return this.finalize(node,new Node.ClassBody(elementList));}
parseClassDeclaration(identifierIsOptional){const node=this.createNode();const previousStrict=this.context.strict;this.context.strict=true;this.expectKeyword('class');const id=(identifierIsOptional&&(this.lookahead.type!==3))?null:this.parseVariableIdentifier();let superClass=null;if(this.matchKeyword('extends')){this.nextToken();superClass=this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);}
const classBody=this.parseClassBody();this.context.strict=previousStrict;return this.finalize(node,new Node.ClassDeclaration(id,superClass,classBody));}
parseClassExpression(){const node=this.createNode();const previousStrict=this.context.strict;this.context.strict=true;this.expectKeyword('class');const id=(this.lookahead.type===3)?this.parseVariableIdentifier():null;let superClass=null;if(this.matchKeyword('extends')){this.nextToken();superClass=this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);}
const classBody=this.parseClassBody();this.context.strict=previousStrict;return this.finalize(node,new Node.ClassExpression(id,superClass,classBody));}
 
parseModule(){this.context.strict=true;this.context.isModule=true;this.scanner.isModule=true;const node=this.createNode();const body=this.parseDirectivePrologues();while(this.lookahead.type!==2){body.push(this.parseStatementListItem());}
return this.finalize(node,new Node.Module(body));}
parseScript(){const node=this.createNode();const body=this.parseDirectivePrologues();while(this.lookahead.type!==2){body.push(this.parseStatementListItem());}
return this.finalize(node,new Node.Script(body));} 
parseModuleSpecifier(){const node=this.createNode();if(this.lookahead.type!==8){this.throwError(messages_1.Messages.InvalidModuleSpecifier);}
const token=this.nextToken();const raw=this.getTokenRaw(token);return this.finalize(node,new Node.Literal(token.value,raw));}
parseImportSpecifier(){const node=this.createNode();let imported;let local;if(this.lookahead.type===3){imported=this.parseVariableIdentifier();local=imported;if(this.matchContextualKeyword('as')){this.nextToken();local=this.parseVariableIdentifier();}}
else{imported=this.parseIdentifierName();local=imported;if(this.matchContextualKeyword('as')){this.nextToken();local=this.parseVariableIdentifier();}
else{this.throwUnexpectedToken(this.nextToken());}}
return this.finalize(node,new Node.ImportSpecifier(local,imported));}
parseNamedImports(){this.expect('{');const specifiers=[];while(!this.match('}')){specifiers.push(this.parseImportSpecifier());if(!this.match('}')){this.expect(',');}}
this.expect('}');return specifiers;}
parseImportDefaultSpecifier(){const node=this.createNode();const local=this.parseIdentifierName();return this.finalize(node,new Node.ImportDefaultSpecifier(local));}
parseImportNamespaceSpecifier(){const node=this.createNode();this.expect('*');if(!this.matchContextualKeyword('as')){this.throwError(messages_1.Messages.NoAsAfterImportNamespace);}
this.nextToken();const local=this.parseIdentifierName();return this.finalize(node,new Node.ImportNamespaceSpecifier(local));}
parseImportDeclaration(){if(this.context.inFunctionBody){this.throwError(messages_1.Messages.IllegalImportDeclaration);}
const node=this.createNode();this.expectKeyword('import');let src;let specifiers=[];if(this.lookahead.type===8){src=this.parseModuleSpecifier();}
else{if(this.match('{')){specifiers=specifiers.concat(this.parseNamedImports());}
else if(this.match('*')){ specifiers.push(this.parseImportNamespaceSpecifier());}
else if(this.isIdentifierName(this.lookahead)&&!this.matchKeyword('default')){ specifiers.push(this.parseImportDefaultSpecifier());if(this.match(',')){this.nextToken();if(this.match('*')){ specifiers.push(this.parseImportNamespaceSpecifier());}
else if(this.match('{')){specifiers=specifiers.concat(this.parseNamedImports());}
else{this.throwUnexpectedToken(this.lookahead);}}}
else{this.throwUnexpectedToken(this.nextToken());}
if(!this.matchContextualKeyword('from')){const message=this.lookahead.value?messages_1.Messages.UnexpectedToken:messages_1.Messages.MissingFromClause;this.throwError(message,this.lookahead.value);}
this.nextToken();src=this.parseModuleSpecifier();}
this.consumeSemicolon();return this.finalize(node,new Node.ImportDeclaration(specifiers,src));} 
parseExportSpecifier(){const node=this.createNode();const local=this.parseIdentifierName();let exported=local;if(this.matchContextualKeyword('as')){this.nextToken();exported=this.parseIdentifierName();}
return this.finalize(node,new Node.ExportSpecifier(local,exported));}
parseExportDeclaration(){if(this.context.inFunctionBody){this.throwError(messages_1.Messages.IllegalExportDeclaration);}
const node=this.createNode();this.expectKeyword('export');let exportDeclaration;if(this.matchKeyword('default')){this.nextToken();if(this.matchKeyword('function')){
const declaration=this.parseFunctionDeclaration(true);exportDeclaration=this.finalize(node,new Node.ExportDefaultDeclaration(declaration));}
else if(this.matchKeyword('class')){const declaration=this.parseClassDeclaration(true);exportDeclaration=this.finalize(node,new Node.ExportDefaultDeclaration(declaration));}
else if(this.matchContextualKeyword('async')){ 
const declaration=this.matchAsyncFunction()?this.parseFunctionDeclaration(true):this.parseAssignmentExpression();exportDeclaration=this.finalize(node,new Node.ExportDefaultDeclaration(declaration));}
else{if(this.matchContextualKeyword('from')){this.throwError(messages_1.Messages.UnexpectedToken,this.lookahead.value);}
const declaration=this.match('{')?this.parseObjectInitializer():this.match('[')?this.parseArrayInitializer():this.parseAssignmentExpression();this.consumeSemicolon();exportDeclaration=this.finalize(node,new Node.ExportDefaultDeclaration(declaration));}}
else if(this.match('*')){this.nextToken();if(!this.matchContextualKeyword('from')){const message=this.lookahead.value?messages_1.Messages.UnexpectedToken:messages_1.Messages.MissingFromClause;this.throwError(message,this.lookahead.value);}
this.nextToken();const src=this.parseModuleSpecifier();this.consumeSemicolon();exportDeclaration=this.finalize(node,new Node.ExportAllDeclaration(src));}
else if(this.lookahead.type===4){let declaration;switch(this.lookahead.value){case'let':case'const':declaration=this.parseLexicalDeclaration({inFor:false});break;case'var':case'class':case'function':declaration=this.parseStatementListItem();break;default:this.throwUnexpectedToken(this.lookahead);}
exportDeclaration=this.finalize(node,new Node.ExportNamedDeclaration(declaration,[],null));}
else if(this.matchAsyncFunction()){const declaration=this.parseFunctionDeclaration();exportDeclaration=this.finalize(node,new Node.ExportNamedDeclaration(declaration,[],null));}
else{const specifiers=[];let source=null;let isExportFromIdentifier=false;this.expect('{');while(!this.match('}')){isExportFromIdentifier=isExportFromIdentifier||this.matchKeyword('default');specifiers.push(this.parseExportSpecifier());if(!this.match('}')){this.expect(',');}}
this.expect('}');if(this.matchContextualKeyword('from')){this.nextToken();source=this.parseModuleSpecifier();this.consumeSemicolon();}
else if(isExportFromIdentifier){ const message=this.lookahead.value?messages_1.Messages.UnexpectedToken:messages_1.Messages.MissingFromClause;this.throwError(message,this.lookahead.value);}
else{this.consumeSemicolon();}
exportDeclaration=this.finalize(node,new Node.ExportNamedDeclaration(null,specifiers,source));}
return exportDeclaration;}}
exports.Parser=Parser;},function(module,exports){"use strict";
Object.defineProperty(exports,"__esModule",{value:true});function assert(condition,message){if(!condition){throw new Error('ASSERT: '+message);}}
exports.assert=assert;},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});class ErrorHandler{constructor(){this.errors=[];this.tolerant=false;}
recordError(error){this.errors.push(error);}
tolerate(error){if(this.tolerant){this.recordError(error);}
else{throw error;}}
constructError(msg,column){let error=new Error(msg);try{throw error;}
catch(base){if(Object.create&&Object.defineProperty){error=Object.create(base);Object.defineProperty(error,'column',{value:column});}}
return error;}
createError(index,line,col,description){const msg='Line '+line+': '+description;const error=this.constructError(msg,col);error.index=index;error.lineNumber=line;error.description=description;return error;}
throwError(index,line,col,description){throw this.createError(index,line,col,description);}
tolerateError(index,line,col,description){const error=this.createError(index,line,col,description);if(this.tolerant){this.recordError(error);}
else{throw error;}}}
exports.ErrorHandler=ErrorHandler;},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.Messages={BadImportCallArity:'Unexpected token',BadGetterArity:'Getter must not have any formal parameters',BadSetterArity:'Setter must have exactly one formal parameter',BadSetterRestParameter:'Setter function argument must not be a rest parameter',ConstructorIsAsync:'Class constructor may not be an async method',ConstructorSpecialMethod:'Class constructor may not be an accessor',DeclarationMissingInitializer:'Missing initializer in %0 declaration',DefaultRestParameter:'Unexpected token =',DefaultRestProperty:'Unexpected token =',DuplicateBinding:'Duplicate binding %0',DuplicateConstructor:'A class may only have one constructor',DuplicateProtoProperty:'Duplicate __proto__ fields are not allowed in object literals',ForAwaitInNonAsync:'for-await-of can only be used in an async function or async generator',ForAwaitOfSemicolon:'Unexpected \';\' in for-await-of header',ForAwaitOfSawIn:'Unexpected \'in\' in for-await-of header',ForInOfLoopInitializer:'%0 loop variable declaration may not have an initializer',GeneratorInLegacyContext:'Generator declarations are not allowed in legacy contexts',IllegalBreak:'Illegal break statement',IllegalContinue:'Illegal continue statement',IllegalExportDeclaration:'Unexpected token',IllegalImportDeclaration:'Unexpected token',IllegalLanguageModeDirective:'Illegal \'use strict\' directive in function with non-simple parameter list',IllegalReturn:'Illegal return statement',InvalidEscapedReservedWord:'Keyword must not contain escaped characters',InvalidHexEscapeSequence:'Invalid hexadecimal escape sequence',InvalidLHSInAssignment:'Invalid left-hand side in assignment',InvalidLHSInForIn:'Invalid left-hand side in for-in',InvalidLHSInForLoop:'Invalid left-hand side in for-loop',InvalidModuleSpecifier:'Unexpected token',InvalidNumericSeparatorAfterLeadingZero:'Numeric serparator can not be used after leading 0',InvalidNumericSeparatorAfterNumericLiteral:'Numeric separators are not allowed at the end of numeric literals',InvalidRegExp:'Invalid regular expression',LetInLexicalBinding:'let is disallowed as a lexically bound name',MissingFromClause:'Unexpected token',MultipleDefaultsInSwitch:'More than one default clause in switch statement',NewlineAfterThrow:'Illegal newline after throw',NoAsAfterImportNamespace:'Unexpected token',NoCatchOrFinally:'Missing catch or finally after try',ParameterAfterRestParameter:'Rest parameter must be last formal parameter',PropertyAfterRestProperty:'Unexpected token',Redeclaration:'%0 \'%1\' has already been declared',StaticPrototype:'Classes may not have static property named prototype',StrictCatchVariable:'Catch variable may not be eval or arguments in strict mode',StrictDelete:'Delete of an unqualified identifier in strict mode.',StrictFunction:'In strict mode code, functions can only be declared at top level or inside a block',StrictFunctionName:'Function name may not be eval or arguments in strict mode',StrictLHSAssignment:'Assignment to eval or arguments is not allowed in strict mode',StrictLHSPostfix:'Postfix increment/decrement may not have eval or arguments operand in strict mode',StrictLHSPrefix:'Prefix increment/decrement may not have eval or arguments operand in strict mode',StrictModeWith:'Strict mode code may not include a with statement',StrictOctalLiteral:'Octal literals are not allowed in strict mode.',StrictParamDupe:'Strict mode function may not have duplicate parameter names',StrictParamName:'Parameter name eval or arguments is not allowed in strict mode',StrictReservedWord:'Use of future reserved word in strict mode',StrictVarName:'Variable name may not be eval or arguments in strict mode',TemplateOctalLiteral:'Octal literals are not allowed in template strings.',UnexpectedEOS:'Unexpected end of input',UnexpectedIdentifier:'Unexpected identifier',UnexpectedNumber:'Unexpected number',UnexpectedReserved:'Unexpected reserved word',UnexpectedString:'Unexpected string',UnexpectedTemplate:'Unexpected quasi %0',UnexpectedToken:'Unexpected token %0',UnexpectedTokenIllegal:'Unexpected token ILLEGAL',UnknownLabel:'Undefined label \'%0\'',UnterminatedRegExp:'Invalid regular expression: missing /'};},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const assert_1=__webpack_require__(9);const character_1=__webpack_require__(4);const messages_1=__webpack_require__(11);function hexValue(ch){return'0123456789abcdef'.indexOf(ch.toLowerCase());}
function octalValue(ch){return'01234567'.indexOf(ch);}
class Scanner{constructor(code,handler){this.source=code;this.errorHandler=handler;this.trackComment=false;this.isModule=false;this.length=code.length;this.index=0;this.lineNumber=(code.length>0)?1:0;this.lineStart=0;this.curlyStack=[];}
saveState(){return{index:this.index,lineNumber:this.lineNumber,lineStart:this.lineStart,curlyStack:this.curlyStack.slice()};}
restoreState(state){this.index=state.index;this.lineNumber=state.lineNumber;this.lineStart=state.lineStart;this.curlyStack=state.curlyStack;}
eof(){return this.index>=this.length;}
throwUnexpectedToken(message=messages_1.Messages.UnexpectedTokenIllegal){return this.errorHandler.throwError(this.index,this.lineNumber,this.index-this.lineStart+1,message);}
tolerateUnexpectedToken(message=messages_1.Messages.UnexpectedTokenIllegal){this.errorHandler.tolerateError(this.index,this.lineNumber,this.index-this.lineStart+1,message);} 
skipSingleLineComment(offset){let comments=[];let start,loc;if(this.trackComment){comments=[];start=this.index-offset;loc={start:{line:this.lineNumber,column:this.index-this.lineStart-offset},end:{}};}
while(!this.eof()){const ch=this.source.charCodeAt(this.index);++this.index;if(character_1.Character.isLineTerminator(ch)){if(this.trackComment){loc.end={line:this.lineNumber,column:this.index-this.lineStart-1};const entry={multiLine:false,slice:[start+offset,this.index-1],range:[start,this.index-1],loc:loc};comments.push(entry);}
if(ch===13&&this.source.charCodeAt(this.index)===10){++this.index;}
++this.lineNumber;this.lineStart=this.index;return comments;}}
if(this.trackComment){loc.end={line:this.lineNumber,column:this.index-this.lineStart};const entry={multiLine:false,slice:[start+offset,this.index],range:[start,this.index],loc:loc};comments.push(entry);}
return comments;}
skipMultiLineComment(){let comments=[];let start,loc;if(this.trackComment){comments=[];start=this.index-2;loc={start:{line:this.lineNumber,column:this.index-this.lineStart-2},end:{}};}
while(!this.eof()){const ch=this.source.charCodeAt(this.index);if(character_1.Character.isLineTerminator(ch)){if(ch===0x0D&&this.source.charCodeAt(this.index+1)===0x0A){++this.index;}
++this.lineNumber;++this.index;this.lineStart=this.index;}
else if(ch===0x2A){if(this.source.charCodeAt(this.index+1)===0x2F){this.index+=2;if(this.trackComment){loc.end={line:this.lineNumber,column:this.index-this.lineStart};const entry={multiLine:true,slice:[start+2,this.index-2],range:[start,this.index],loc:loc};comments.push(entry);}
return comments;}
++this.index;}
else{++this.index;}} 
if(this.trackComment){loc.end={line:this.lineNumber,column:this.index-this.lineStart};const entry={multiLine:true,slice:[start+2,this.index],range:[start,this.index],loc:loc};comments.push(entry);}
this.tolerateUnexpectedToken();return comments;}
scanComments(){let comments;if(this.trackComment){comments=[];}
let start=(this.index===0);while(!this.eof()){let ch=this.source.charCodeAt(this.index);if(character_1.Character.isWhiteSpace(ch)){++this.index;}
else if(character_1.Character.isLineTerminator(ch)){++this.index;if(ch===0x0D&&this.source.charCodeAt(this.index)===0x0A){++this.index;}
++this.lineNumber;this.lineStart=this.index;start=true;}
else if(ch===0x2F){ch=this.source.charCodeAt(this.index+1);if(ch===0x2F){this.index+=2;const comment=this.skipSingleLineComment(2);if(this.trackComment){comments=comments.concat(comment);}
start=true;}
else if(ch===0x2A){this.index+=2;const comment=this.skipMultiLineComment();if(this.trackComment){comments=comments.concat(comment);}}
else{break;}}
else if(start&&ch===0x2D){if((this.source.charCodeAt(this.index+1)===0x2D)&&(this.source.charCodeAt(this.index+2)===0x3E)){ this.index+=3;const comment=this.skipSingleLineComment(3);if(this.trackComment){comments=comments.concat(comment);}}
else{break;}}
else if(ch===0x3C&&!this.isModule){if(this.source.slice(this.index+1,this.index+4)==='!--'){this.index+=4;const comment=this.skipSingleLineComment(4);if(this.trackComment){comments=comments.concat(comment);}}
else{break;}}
else{break;}}
return comments;} 
isFutureReservedWord(id){switch(id){case'enum':case'export':case'import':case'super':return true;default:return false;}}
isStrictModeReservedWord(id){switch(id){case'implements':case'interface':case'package':case'private':case'protected':case'public':case'static':case'yield':case'let':return true;default:return false;}}
isRestrictedWord(id){return id==='eval'||id==='arguments';} 
isKeyword(id){switch(id.length){case 2:return(id==='if')||(id==='in')||(id==='do');case 3:return(id==='var')||(id==='for')||(id==='new')||(id==='try')||(id==='let');case 4:return(id==='this')||(id==='else')||(id==='case')||(id==='void')||(id==='with')||(id==='enum');case 5:return(id==='while')||(id==='break')||(id==='catch')||(id==='throw')||(id==='const')||(id==='yield')||(id==='class')||(id==='super');case 6:return(id==='return')||(id==='typeof')||(id==='delete')||(id==='switch')||(id==='export')||(id==='import');case 7:return(id==='default')||(id==='finally')||(id==='extends');case 8:return(id==='function')||(id==='continue')||(id==='debugger');case 10:return(id==='instanceof');default:return false;}}
codePointAt(i){let cp=this.source.charCodeAt(i);if(cp>=0xD800&&cp<=0xDBFF){const second=this.source.charCodeAt(i+1);if(second>=0xDC00&&second<=0xDFFF){const first=cp;cp=(first-0xD800)*0x400+second-0xDC00+0x10000;}}
return cp;}
scanHexEscape(prefix){const len=(prefix==='u')?4:2;let code=0;for(let i=0;i<len;++i){if(!this.eof()&&character_1.Character.isHexDigit(this.source.charCodeAt(this.index))){code=code*16+hexValue(this.source[this.index++]);}
else{return null;}}
return String.fromCharCode(code);}
scanUnicodeCodePointEscape(){let ch=this.source[this.index];let code=0;if(ch==='}'){this.throwUnexpectedToken();}
while(!this.eof()){ch=this.source[this.index++];if(!character_1.Character.isHexDigit(ch.charCodeAt(0))){break;}
code=code*16+hexValue(ch);}
if(code>0x10FFFF||ch!=='}'){this.throwUnexpectedToken();}
return character_1.Character.fromCodePoint(code);}
getIdentifier(){const start=this.index++;while(!this.eof()){const ch=this.source.charCodeAt(this.index);if(ch===0x5C){this.index=start;return this.getComplexIdentifier();}
else if(ch>=0xD800&&ch<0xDFFF){this.index=start;return this.getComplexIdentifier();}
if(character_1.Character.isIdentifierPart(ch)){++this.index;}
else{break;}}
return this.source.slice(start,this.index);}
getComplexIdentifier(){let cp=this.codePointAt(this.index);let id=character_1.Character.fromCodePoint(cp);this.index+=id.length;let ch;if(cp===0x5C){if(this.source.charCodeAt(this.index)!==0x75){this.throwUnexpectedToken();}
++this.index;if(this.source[this.index]==='{'){++this.index;ch=this.scanUnicodeCodePointEscape();}
else{ch=this.scanHexEscape('u');if(ch===null||ch==='\\'||!character_1.Character.isIdentifierStart(ch.charCodeAt(0))){this.throwUnexpectedToken();}}
id=ch;}
while(!this.eof()){cp=this.codePointAt(this.index);if(!character_1.Character.isIdentifierPart(cp)){break;}
ch=character_1.Character.fromCodePoint(cp);id+=ch;this.index+=ch.length;if(cp===0x5C){id=id.substr(0,id.length-1);if(this.source.charCodeAt(this.index)!==0x75){this.throwUnexpectedToken();}
++this.index;if(this.source[this.index]==='{'){++this.index;ch=this.scanUnicodeCodePointEscape();}
else{ch=this.scanHexEscape('u');if(ch===null||ch==='\\'||!character_1.Character.isIdentifierPart(ch.charCodeAt(0))){this.throwUnexpectedToken();}}
id+=ch;}}
return id;}
octalToDecimal(ch){ let octal=(ch!=='0');let code=octalValue(ch);if(!this.eof()&&character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))){octal=true;code=code*8+octalValue(this.source[this.index++]);
 if('0123'.indexOf(ch)>=0&&!this.eof()&&character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))){code=code*8+octalValue(this.source[this.index++]);}}
return{code:code,octal:octal};} 
scanIdentifier(){let type;const start=this.index;const id=(this.source.charCodeAt(start)===0x5C)?this.getComplexIdentifier():this.getIdentifier();if(id.length===1){type=3;}
else if(this.isKeyword(id)){type=4;}
else if(id==='null'){type=5;}
else if(id==='true'||id==='false'){type=1;}
else{type=3;}
if(type!==3&&(start+id.length!==this.index)){const restore=this.index;this.index=start;this.tolerateUnexpectedToken(messages_1.Messages.InvalidEscapedReservedWord);this.index=restore;}
return{type:type,value:id,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};} 
scanPunctuator(){const start=this.index;let str=this.source[this.index];switch(str){case'(':case'{':if(str==='{'){this.curlyStack.push('{');}
++this.index;break;case'.':++this.index;if(this.source[this.index]==='.'&&this.source[this.index+1]==='.'){this.index+=2;str='...';}
break;case'}':++this.index;this.curlyStack.pop();break;case')':case';':case',':case'[':case']':case':':case'?':case'~':++this.index;break;default:str=this.source.substr(this.index,4);if(str==='>>>='){this.index+=4;}
else{str=str.substr(0,3);if(str==='==='||str==='!=='||str==='>>>'||str==='<<='||str==='>>='||str==='**='){this.index+=3;}
else{str=str.substr(0,2);if(str==='&&'||str==='||'||str==='=='||str==='!='||str==='+='||str==='-='||str==='*='||str==='/='||str==='++'||str==='--'||str==='<<'||str==='>>'||str==='&='||str==='|='||str==='^='||str==='%='||str==='<='||str==='>='||str==='=>'||str==='**'){this.index+=2;}
else{str=this.source[this.index];if('<>=!+-*%&|^/'.indexOf(str)>=0){++this.index;}}}}}
if(this.index===start){this.throwUnexpectedToken();}
return{type:7,value:str,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};} 
scanHexLiteral(start){let num='';let nextInvalidNumericSeparatorPosition=this.index;while(character_1.Character.isHexDigit(this.source.charCodeAt(this.index))||this.source[this.index]==='_'){if(this.source[this.index]==='_'){if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken();}
++this.index;nextInvalidNumericSeparatorPosition=this.index;continue;}
num+=this.source[this.index++];}
if(num.length===0){this.throwUnexpectedToken();}
if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterNumericLiteral);}
let bigint=false;if(this.source[this.index]==='n'){++this.index;bigint=true;}
if(character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))){this.throwUnexpectedToken();}
return{type:6,value:parseInt('0x'+num,16),bigint:bigint,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};}
scanBinaryLiteral(start){let num='';let ch;let nextInvalidNumericSeparatorPosition=this.index;while(this.source[this.index]==='0'||this.source[this.index]==='1'||this.source[this.index]==='_'){if(this.source[this.index]==='_'){if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken();}
++this.index;nextInvalidNumericSeparatorPosition=this.index;continue;}
num+=this.source[this.index++];}
if(num.length===0){ this.throwUnexpectedToken();}
if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterNumericLiteral);}
let bigint=false;if(this.source[this.index]==='n'){++this.index;bigint=true;}
if(!this.eof()){ch=this.source.charCodeAt(this.index);if(character_1.Character.isIdentifierStart(ch)||character_1.Character.isDecimalDigit(ch)){this.throwUnexpectedToken();}}
return{type:6,value:parseInt(num,2),bigint:bigint,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};}
scanOctalLiteral(prefix,start,legacy){let num='';let octal=false;if(character_1.Character.isOctalDigit(prefix.charCodeAt(0))){octal=true;num='0'+this.source[this.index++];}
else{++this.index;}
let nextInvalidNumericSeparatorPosition=legacy?-1:this.index;while(character_1.Character.isOctalDigit(this.source.charCodeAt(this.index))||this.source[this.index]==='_'){if(this.source[this.index]==='_'){if(legacy||this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken();}
++this.index;nextInvalidNumericSeparatorPosition=this.index;continue;}
num+=this.source[this.index++];}
if(!octal&&num.length===0){ this.throwUnexpectedToken();}
if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterNumericLiteral);}
let bigint=false;if(!legacy&&this.source[this.index]==='n'){++this.index;bigint=true;}
if(character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))||character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))){this.throwUnexpectedToken();}
return{type:6,value:parseInt(num,8),octal:octal,bigint:bigint,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};}
isImplicitOctalLiteral(){for(let i=this.index+1;i<this.length;++i){const ch=this.source[i];if(ch==='8'||ch==='9'){return false;}
if(!character_1.Character.isOctalDigit(ch.charCodeAt(0))){return true;}}
return true;}
scanNumericLiteral(){const start=this.index;let ch=this.source[start];assert_1.assert(character_1.Character.isDecimalDigit(ch.charCodeAt(0))||(ch==='.'),'Numeric literal must start with a decimal digit or a decimal point');let nextInvalidNumericSeparatorPosition=-1;let num='';if(ch!=='.'){num=this.source[this.index++];ch=this.source[this.index];let wasZeroPrefixed=false;if(num==='0'){if(ch==='x'||ch==='X'){++this.index;return this.scanHexLiteral(start);}
if(ch==='b'||ch==='B'){++this.index;return this.scanBinaryLiteral(start);}
if(ch==='o'||ch==='O'){const legacy=false;return this.scanOctalLiteral(ch,start,legacy);}
if(ch&&character_1.Character.isOctalDigit(ch.charCodeAt(0))){if(this.isImplicitOctalLiteral()){const legacy=true;return this.scanOctalLiteral(ch,start,legacy);}}
if(ch==='_'){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterLeadingZero);}
wasZeroPrefixed=true;}
while(character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))||this.source[this.index]==='_'){if(this.source[this.index]==='_'){if(wasZeroPrefixed||this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken();}
++this.index;nextInvalidNumericSeparatorPosition=this.index;continue;}
num+=this.source[this.index++];}
if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterLeadingZero);}
ch=this.source[this.index];if(ch==='n'&&(!wasZeroPrefixed||num==='0')){++this.index;if(character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))){this.throwUnexpectedToken();}
const value=globalThis.BigInt?globalThis.BigInt(this.source.slice(start,this.index-1).replace(/_/g,'')):null;return{type:6,value:value,bigint:true,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};}}
if(ch==='.'){num+=this.source[this.index++];if(this.source[this.index]==='_'){this.throwUnexpectedToken();}
nextInvalidNumericSeparatorPosition=-1;while(character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))||this.source[this.index]==='_'){if(this.source[this.index]==='_'){if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken();}
++this.index;nextInvalidNumericSeparatorPosition=this.index;continue;}
num+=this.source[this.index++];}
ch=this.source[this.index];if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterNumericLiteral);}}
if(ch==='e'||ch==='E'){num+=this.source[this.index++];ch=this.source[this.index];if(ch==='_'){this.throwUnexpectedToken();}
if(ch==='+'||ch==='-'){num+=this.source[this.index++];if(this.source[this.index]==='_'){this.throwUnexpectedToken();}}
nextInvalidNumericSeparatorPosition=-1;if(character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))){while(character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))||this.source[this.index]==='_'){if(this.source[this.index]==='_'){if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken();}
++this.index;nextInvalidNumericSeparatorPosition=this.index;continue;}
num+=this.source[this.index++];}}
else{this.throwUnexpectedToken();}}
if(this.index===nextInvalidNumericSeparatorPosition){this.throwUnexpectedToken(messages_1.Messages.InvalidNumericSeparatorAfterNumericLiteral);}
if(character_1.Character.isIdentifierStart(this.source.charCodeAt(this.index))){this.throwUnexpectedToken();}
return{type:6,value:parseFloat(num),lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};} 
scanStringLiteral(){const start=this.index;let quote=this.source[start];assert_1.assert((quote==='\''||quote==='"'),'String literal must starts with a quote');++this.index;let octal=false;let str='';while(!this.eof()){let ch=this.source[this.index++];if(ch===quote){quote='';break;}
else if(ch==='\\'){ch=this.source[this.index++];if(!ch||!character_1.Character.isLineTerminator(ch.charCodeAt(0))){switch(ch){case'u':if(this.source[this.index]==='{'){++this.index;str+=this.scanUnicodeCodePointEscape();}
else{const unescapedChar=this.scanHexEscape(ch);if(unescapedChar===null){this.throwUnexpectedToken();}
str+=unescapedChar;}
break;case'x':const unescaped=this.scanHexEscape(ch);if(unescaped===null){this.throwUnexpectedToken(messages_1.Messages.InvalidHexEscapeSequence);}
str+=unescaped;break;case'n':str+='\n';break;case'r':str+='\r';break;case't':str+='\t';break;case'b':str+='\b';break;case'f':str+='\f';break;case'v':str+='\x0B';break;case'8':case'9':str+=ch;this.tolerateUnexpectedToken();break;default:if(ch&&character_1.Character.isOctalDigit(ch.charCodeAt(0))){const octToDec=this.octalToDecimal(ch);octal=octToDec.octal||octal;str+=String.fromCharCode(octToDec.code);}
else{str+=ch;}
break;}}
else{++this.lineNumber;if(ch==='\r'&&this.source[this.index]==='\n'){++this.index;}
this.lineStart=this.index;}}
else if(character_1.Character.isLineTerminator(ch.charCodeAt(0))){break;}
else{str+=ch;}}
if(quote!==''){this.index=start;this.throwUnexpectedToken();}
return{type:8,value:str,octal:octal,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};} 
scanTemplate(){let cooked='';let terminated=false;const start=this.index;const head=(this.source[start]==='`');let tail=false;let rawOffset=2;++this.index;while(!this.eof()){let ch=this.source[this.index++];if(ch==='`'){rawOffset=1;tail=true;terminated=true;break;}
else if(ch==='$'){if(this.source[this.index]==='{'){this.curlyStack.push('${');++this.index;terminated=true;break;}
cooked+=ch;}
else if(ch==='\\'){ch=this.source[this.index++];if(!character_1.Character.isLineTerminator(ch.charCodeAt(0))){switch(ch){case'n':cooked+='\n';break;case'r':cooked+='\r';break;case't':cooked+='\t';break;case'u':if(this.source[this.index]==='{'){++this.index;cooked+=this.scanUnicodeCodePointEscape();}
else{const restore=this.index;const unescapedChar=this.scanHexEscape(ch);if(unescapedChar!==null){cooked+=unescapedChar;}
else{this.index=restore;cooked+=ch;}}
break;case'x':const unescaped=this.scanHexEscape(ch);if(unescaped===null){this.throwUnexpectedToken(messages_1.Messages.InvalidHexEscapeSequence);}
cooked+=unescaped;break;case'b':cooked+='\b';break;case'f':cooked+='\f';break;case'v':cooked+='\v';break;default:if(ch==='0'){if(character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index))){ this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);}
cooked+='\0';}
else if(character_1.Character.isOctalDigit(ch.charCodeAt(0))){ this.throwUnexpectedToken(messages_1.Messages.TemplateOctalLiteral);}
else{cooked+=ch;}
break;}}
else{++this.lineNumber;if(ch==='\r'&&this.source[this.index]==='\n'){++this.index;}
this.lineStart=this.index;}}
else if(character_1.Character.isLineTerminator(ch.charCodeAt(0))){++this.lineNumber;if(ch==='\r'&&this.source[this.index]==='\n'){++this.index;}
this.lineStart=this.index;cooked+='\n';}
else{cooked+=ch;}}
if(!terminated){this.throwUnexpectedToken();}
if(!head){this.curlyStack.pop();}
return{type:10,value:this.source.slice(start+1,this.index-rawOffset),cooked:cooked,head:head,tail:tail,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};} 
testRegExp(pattern,flags){



const astralSubstitute='\uFFFF';let tmp=pattern;const self=this;if(flags.indexOf('u')>=0){tmp=tmp



.replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g,($0,$1,$2)=>{const codePoint=parseInt($1||$2,16);if(codePoint>0x10FFFF){self.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);}
if(codePoint<=0xFFFF){return String.fromCharCode(codePoint);}
return astralSubstitute;})


.replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g,astralSubstitute);}
try{RegExp(tmp);}
catch(e){this.throwUnexpectedToken(messages_1.Messages.InvalidRegExp);}


try{return new RegExp(pattern,flags);}
catch(exception){return null;}}
scanRegExpBody(){let ch=this.source[this.index];assert_1.assert(ch==='/','Regular expression literal must start with a slash');let str=this.source[this.index++];let classMarker=false;let terminated=false;while(!this.eof()){ch=this.source[this.index++];str+=ch;if(ch==='\\'){ch=this.source[this.index++]; if(character_1.Character.isLineTerminator(ch.charCodeAt(0))){this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);}
str+=ch;}
else if(character_1.Character.isLineTerminator(ch.charCodeAt(0))){this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);}
else if(classMarker){if(ch===']'){classMarker=false;}}
else{if(ch==='/'){terminated=true;break;}
else if(ch==='['){classMarker=true;}}}
if(!terminated){this.throwUnexpectedToken(messages_1.Messages.UnterminatedRegExp);}
return str.substr(1,str.length-2);}
scanRegExpFlags(){let str='';let flags='';while(!this.eof()){let ch=this.source[this.index];if(!character_1.Character.isIdentifierPart(ch.charCodeAt(0))){break;}
++this.index;if(ch==='\\'&&!this.eof()){ch=this.source[this.index];if(ch==='u'){++this.index;let restore=this.index;const char=this.scanHexEscape('u');if(char!==null){flags+=char;for(str+='\\u';restore<this.index;++restore){str+=this.source[restore];}}
else{this.index=restore;flags+='u';str+='\\u';}
this.tolerateUnexpectedToken();}
else{str+='\\';this.tolerateUnexpectedToken();}}
else{flags+=ch;str+=ch;}}
return flags;}
scanRegExp(){const start=this.index;const pattern=this.scanRegExpBody();const flags=this.scanRegExpFlags();const value=this.testRegExp(pattern,flags);return{type:9,value:'',pattern:pattern,flags:flags,regex:value,lineNumber:this.lineNumber,lineStart:this.lineStart,start:start,end:this.index};}
lex(){if(this.eof()){return{type:2,value:'',lineNumber:this.lineNumber,lineStart:this.lineStart,start:this.index,end:this.index};}
const cp=this.source.charCodeAt(this.index);if(character_1.Character.isIdentifierStart(cp)){return this.scanIdentifier();}
if(cp===0x28||cp===0x29||cp===0x3B){return this.scanPunctuator();}
if(cp===0x27||cp===0x22){return this.scanStringLiteral();}

if(cp===0x2E){if(character_1.Character.isDecimalDigit(this.source.charCodeAt(this.index+1))){return this.scanNumericLiteral();}
return this.scanPunctuator();}
if(character_1.Character.isDecimalDigit(cp)){return this.scanNumericLiteral();}

if(cp===0x60||(cp===0x7D&&this.curlyStack[this.curlyStack.length-1]==='${')){return this.scanTemplate();}
if(cp>=0xD800&&cp<0xDFFF){if(character_1.Character.isIdentifierStart(this.codePointAt(this.index))){return this.scanIdentifier();}}
return this.scanPunctuator();}}
exports.Scanner=Scanner;},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.TokenName={};exports.TokenName[1]='Boolean';exports.TokenName[2]='<end>';exports.TokenName[3]='Identifier';exports.TokenName[4]='Keyword';exports.TokenName[5]='Null';exports.TokenName[6]='Numeric';exports.TokenName[7]='Punctuator';exports.TokenName[8]='String';exports.TokenName[9]='RegularExpression';exports.TokenName[10]='Template';},function(module,exports){"use strict";Object.defineProperty(exports,"__esModule",{value:true});exports.XHTMLEntities={quot:'\u0022',amp:'\u0026',apos:'\u0027',gt:'\u003E',nbsp:'\u00A0',iexcl:'\u00A1',cent:'\u00A2',pound:'\u00A3',curren:'\u00A4',yen:'\u00A5',brvbar:'\u00A6',sect:'\u00A7',uml:'\u00A8',copy:'\u00A9',ordf:'\u00AA',laquo:'\u00AB',not:'\u00AC',shy:'\u00AD',reg:'\u00AE',macr:'\u00AF',deg:'\u00B0',plusmn:'\u00B1',sup2:'\u00B2',sup3:'\u00B3',acute:'\u00B4',micro:'\u00B5',para:'\u00B6',middot:'\u00B7',cedil:'\u00B8',sup1:'\u00B9',ordm:'\u00BA',raquo:'\u00BB',frac14:'\u00BC',frac12:'\u00BD',frac34:'\u00BE',iquest:'\u00BF',Agrave:'\u00C0',Aacute:'\u00C1',Acirc:'\u00C2',Atilde:'\u00C3',Auml:'\u00C4',Aring:'\u00C5',AElig:'\u00C6',Ccedil:'\u00C7',Egrave:'\u00C8',Eacute:'\u00C9',Ecirc:'\u00CA',Euml:'\u00CB',Igrave:'\u00CC',Iacute:'\u00CD',Icirc:'\u00CE',Iuml:'\u00CF',ETH:'\u00D0',Ntilde:'\u00D1',Ograve:'\u00D2',Oacute:'\u00D3',Ocirc:'\u00D4',Otilde:'\u00D5',Ouml:'\u00D6',times:'\u00D7',Oslash:'\u00D8',Ugrave:'\u00D9',Uacute:'\u00DA',Ucirc:'\u00DB',Uuml:'\u00DC',Yacute:'\u00DD',THORN:'\u00DE',szlig:'\u00DF',agrave:'\u00E0',aacute:'\u00E1',acirc:'\u00E2',atilde:'\u00E3',auml:'\u00E4',aring:'\u00E5',aelig:'\u00E6',ccedil:'\u00E7',egrave:'\u00E8',eacute:'\u00E9',ecirc:'\u00EA',euml:'\u00EB',igrave:'\u00EC',iacute:'\u00ED',icirc:'\u00EE',iuml:'\u00EF',eth:'\u00F0',ntilde:'\u00F1',ograve:'\u00F2',oacute:'\u00F3',ocirc:'\u00F4',otilde:'\u00F5',ouml:'\u00F6',divide:'\u00F7',oslash:'\u00F8',ugrave:'\u00F9',uacute:'\u00FA',ucirc:'\u00FB',uuml:'\u00FC',yacute:'\u00FD',thorn:'\u00FE',yuml:'\u00FF',OElig:'\u0152',oelig:'\u0153',Scaron:'\u0160',scaron:'\u0161',Yuml:'\u0178',fnof:'\u0192',circ:'\u02C6',tilde:'\u02DC',Alpha:'\u0391',Beta:'\u0392',Gamma:'\u0393',Delta:'\u0394',Epsilon:'\u0395',Zeta:'\u0396',Eta:'\u0397',Theta:'\u0398',Iota:'\u0399',Kappa:'\u039A',Lambda:'\u039B',Mu:'\u039C',Nu:'\u039D',Xi:'\u039E',Omicron:'\u039F',Pi:'\u03A0',Rho:'\u03A1',Sigma:'\u03A3',Tau:'\u03A4',Upsilon:'\u03A5',Phi:'\u03A6',Chi:'\u03A7',Psi:'\u03A8',Omega:'\u03A9',alpha:'\u03B1',beta:'\u03B2',gamma:'\u03B3',delta:'\u03B4',epsilon:'\u03B5',zeta:'\u03B6',eta:'\u03B7',theta:'\u03B8',iota:'\u03B9',kappa:'\u03BA',lambda:'\u03BB',mu:'\u03BC',nu:'\u03BD',xi:'\u03BE',omicron:'\u03BF',pi:'\u03C0',rho:'\u03C1',sigmaf:'\u03C2',sigma:'\u03C3',tau:'\u03C4',upsilon:'\u03C5',phi:'\u03C6',chi:'\u03C7',psi:'\u03C8',omega:'\u03C9',thetasym:'\u03D1',upsih:'\u03D2',piv:'\u03D6',ensp:'\u2002',emsp:'\u2003',thinsp:'\u2009',zwnj:'\u200C',zwj:'\u200D',lrm:'\u200E',rlm:'\u200F',ndash:'\u2013',mdash:'\u2014',lsquo:'\u2018',rsquo:'\u2019',sbquo:'\u201A',ldquo:'\u201C',rdquo:'\u201D',bdquo:'\u201E',dagger:'\u2020',Dagger:'\u2021',bull:'\u2022',hellip:'\u2026',permil:'\u2030',prime:'\u2032',Prime:'\u2033',lsaquo:'\u2039',rsaquo:'\u203A',oline:'\u203E',frasl:'\u2044',euro:'\u20AC',image:'\u2111',weierp:'\u2118',real:'\u211C',trade:'\u2122',alefsym:'\u2135',larr:'\u2190',uarr:'\u2191',rarr:'\u2192',darr:'\u2193',harr:'\u2194',crarr:'\u21B5',lArr:'\u21D0',uArr:'\u21D1',rArr:'\u21D2',dArr:'\u21D3',hArr:'\u21D4',forall:'\u2200',part:'\u2202',exist:'\u2203',empty:'\u2205',nabla:'\u2207',isin:'\u2208',notin:'\u2209',ni:'\u220B',prod:'\u220F',sum:'\u2211',minus:'\u2212',lowast:'\u2217',radic:'\u221A',prop:'\u221D',infin:'\u221E',ang:'\u2220',and:'\u2227',or:'\u2228',cap:'\u2229',cup:'\u222A',int:'\u222B',there4:'\u2234',sim:'\u223C',cong:'\u2245',asymp:'\u2248',ne:'\u2260',equiv:'\u2261',le:'\u2264',ge:'\u2265',sub:'\u2282',sup:'\u2283',nsub:'\u2284',sube:'\u2286',supe:'\u2287',oplus:'\u2295',otimes:'\u2297',perp:'\u22A5',sdot:'\u22C5',lceil:'\u2308',rceil:'\u2309',lfloor:'\u230A',rfloor:'\u230B',loz:'\u25CA',spades:'\u2660',clubs:'\u2663',hearts:'\u2665',diams:'\u2666',lang:'\u27E8',rang:'\u27E9'};},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:true});const error_handler_1=__webpack_require__(10);const scanner_1=__webpack_require__(12);const token_1=__webpack_require__(13);class Reader{constructor(){this.values=[];this.curly=this.paren=-1;}
beforeFunctionExpression(t){return['(','{','[','in','typeof','instanceof','new','return','case','delete','throw','void','=','+=','-=','*=','**=','/=','%=','<<=','>>=','>>>=','&=','|=','^=',',','+','-','*','**','/','%','++','--','<<','>>','>>>','&','|','^','!','~','&&','||','?',':','===','==','>=','<=','<','>','!=','!=='].indexOf(t)>=0;}
 
isRegexStart(){const previous=this.values[this.values.length-1];let regex=(previous!==null);switch(previous){case'this':case']':regex=false;break;case')':const keyword=this.values[this.paren-1];regex=(keyword==='if'||keyword==='while'||keyword==='for'||keyword==='with');break;case'}':regex=true;if(this.values[this.curly-3]==='function'){ const check=this.values[this.curly-4];regex=check?!this.beforeFunctionExpression(check):false;}
else if(this.values[this.curly-4]==='function'){const check=this.values[this.curly-5];regex=check?!this.beforeFunctionExpression(check):true;}
break;default:break;}
return regex;}
push(token){if(token.type===7||token.type===4){if(token.value==='{'){this.curly=this.values.length;}
else if(token.value==='('){this.paren=this.values.length;}
this.values.push(token.value);}
else{this.values.push(null);}}}
class Tokenizer{constructor(code,config){this.errorHandler=new error_handler_1.ErrorHandler();this.errorHandler.tolerant=config?(typeof config.tolerant==='boolean'&&config.tolerant):false;this.scanner=new scanner_1.Scanner(code,this.errorHandler);this.scanner.trackComment=config?(typeof config.comment==='boolean'&&config.comment):false;this.trackRange=config?(typeof config.range==='boolean'&&config.range):false;this.trackLoc=config?(typeof config.loc==='boolean'&&config.loc):false;this.buffer=[];this.reader=new Reader();}
errors(){return this.errorHandler.errors;}
getNextToken(){if(this.buffer.length===0){const comments=this.scanner.scanComments();if(this.scanner.trackComment){for(let i=0;i<comments.length;++i){const e=comments[i];const value=this.scanner.source.slice(e.slice[0],e.slice[1]);const comment={type:e.multiLine?'BlockComment':'LineComment',value:value};if(this.trackRange){comment.range=e.range;}
if(this.trackLoc){comment.loc=e.loc;}
this.buffer.push(comment);}}
if(!this.scanner.eof()){let loc;if(this.trackLoc){loc={start:{line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart},end:{}};}
const maybeRegex=(this.scanner.source[this.scanner.index]==='/')&&this.reader.isRegexStart();let token;if(maybeRegex){const state=this.scanner.saveState();try{token=this.scanner.scanRegExp();}
catch(e){this.scanner.restoreState(state);token=this.scanner.lex();}}
else{token=this.scanner.lex();}
this.reader.push(token);const entry={type:token_1.TokenName[token.type],value:this.scanner.source.slice(token.start,token.end)};if(this.trackRange){entry.range=[token.start,token.end];}
if(this.trackLoc){loc.end={line:this.scanner.lineNumber,column:this.scanner.index-this.scanner.lineStart};entry.loc=loc;}
if(token.type===9){const pattern=token.pattern;const flags=token.flags;entry.regex={pattern,flags};}
this.buffer.push(entry);}}
return this.buffer.shift();}}
exports.Tokenizer=Tokenizer;}
])});
