@vtj/renderer/dist/index.cjs

VTJ 是一款基于 Vue3 + Typescript 的低代码页面可视化设计器。内置低代码引擎、渲染器和代码生成器，面向前端开发者，开箱即用。 无缝嵌入本地开发工程，不改变前端开发流程和编码习惯。

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 * Copyright (c) 2026, VTJ.PRO All rights reserved.
 * @name @vtj/renderer 
 * @author CHC chenhuachun1549@dingtalk.com 
 * @version 0.18.20
 * @license <a href="https://vtj.pro/license.html">MIT License</a>
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i=0,r=Object.keys(this.undefinedExports);i<r.length;i+=1){var n=r[i];this.raiseRecoverable(this.undefinedExports[n].start,"Export '"+n+"' is not defined")}return this.adaptDirectivePrologue(t.body),this.next(),t.sourceType=this.options.sourceType,this.finishNode(t,"Program")};var Nt={kind:"loop"},ji={kind:"switch"};_.isLet=function(t){if(this.options.ecmaVersion<6||!this.isContextual("let"))return!1;q.lastIndex=this.pos;var e=q.exec(this.input),s=this.pos+e[0].length,i=this.input.charCodeAt(s);if(i===91)return!0;if(t)return!1;if(i===123)return!0;if(ae(i,!0)){for(var r=s+1;Se(this.input.charCodeAt(r),!0);)++r;var n=this.input.slice(s,r);if(!Ai.test(n))return!0}return!1};_.isAsyncFunction=function(){if(this.options.ecmaVersion<8||!this.isContextual("async"))return!1;q.lastIndex=this.pos;var t=q.exec(this.input),e=this.pos+t[0].length;return!K.test(this.input.slice(this.pos,e))&&this.input.slice(e,e+8)==="function"&&(e+8===this.input.length||!Se(this.input.charAt(e+8)))};_.parseStatement=function(t,e,s){var i=this.type,r=this.startNode(),n;switch(this.isLet(t)&&(i=o._var,n="let"),i){case o._break:case o._continue:return this.parseBreakContinueStatement(r,i.keyword);case o._debugger:return this.parseDebuggerStatement(r);case o._do:return this.parseDoStatement(r);case o._for:return this.parseForStatement(r);case o._function:return t&&(this.strict||t!=="if"&&t!=="label")&&this.options.ecmaVersion>=6&&this.unexpected(),this.parseFunctionStatement(r,!1,!t);case o._class:return t&&this.unexpected(),this.parseClass(r,!0);case o._if:return this.parseIfStatement(r);case o._return:return this.parseReturnStatement(r);case o._switch:return this.parseSwitchStatement(r);case o._throw:return this.parseThrowStatement(r);case o._try:return this.parseTryStatement(r);case o._const:case o._var:return n=n||this.value,t&&n!=="var"&&this.unexpected(),this.parseVarStatement(r,n);case o._while:return this.parseWhileStatement(r);case o._with:return this.parseWithStatement(r);case o.braceL:return this.parseBlock(!0,r);case o.semi:return this.parseEmptyStatement(r);case o._export:case o._import:if(this.options.ecmaVersion>10&&i===o._import){q.lastIndex=this.pos;var a=q.exec(this.input),u=this.pos+a[0].length,c=this.input.charCodeAt(u);if(c===40||c===46)return this.parseExpressionStatement(r,this.parseExpression())}return this.options.allowImportExportEverywhere||(e||this.raise(this.start,"'import' and 'export' may only appear at the top level"),this.inModule||this.raise(this.start,"'import' and 'export' may appear only with 'sourceType: module'")),i===o._import?this.parseImport(r):this.parseExport(r,s);default:if(this.isAsyncFunction())return t&&this.unexpected(),this.next(),this.parseFunctionStatement(r,!0,!t);var l=this.value,h=this.parseExpression();return i===o.name&&h.type==="Identifier"&&this.eat(o.colon)?this.parseLabeledStatement(r,l,h,t):this.parseExpressionStatement(r,h)}};_.parseBreakContinueStatement=function(t,e){var s=e==="break";this.next(),this.eat(o.semi)||this.insertSemicolon()?t.label=null:this.type!==o.name?this.unexpected():(t.label=this.parseIdent(),this.semicolon());for(var i=0;i<this.labels.length;++i){var r=this.labels[i];if((t.label==null||r.name===t.label.name)&&(r.kind!=null&&(s||r.kind==="loop")||t.label&&s))break}return i===this.labels.length&&this.raise(t.start,"Unsyntactic "+e),this.finishNode(t,s?"BreakStatement":"ContinueStatement")};_.parseDebuggerStatement=function(t){return this.next(),this.semicolon(),this.finishNode(t,"DebuggerStatement")};_.parseDoStatement=function(t){return this.next(),this.labels.push(Nt),t.body=this.parseStatement("do"),this.labels.pop(),this.expect(o._while),t.test=this.parseParenExpression(),this.options.ecmaVersion>=6?this.eat(o.semi):this.semicolon(),this.finishNode(t,"DoWhileStatement")};_.parseForStatement=function(t){this.next();var e=this.options.ecmaVersion>=9&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction)&&this.eatContextual("await")?this.lastTokStart:-1;if(this.labels.push(Nt),this.enterScope(0),this.expect(o.parenL),this.type===o.semi)return e>-1&&this.unexpected(e),this.parseFor(t,null);var s=this.isLet();if(this.type===o._var||this.type===o._const||s){var i=this.startNode(),r=s?"let":this.value;return 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t.finalizer=this.eat(o._finally)?this.parseBlock():null,!t.handler&&!t.finalizer&&this.raise(t.start,"Missing catch or finally clause"),this.finishNode(t,"TryStatement")};_.parseVarStatement=function(t,e){return this.next(),this.parseVar(t,!1,e),this.semicolon(),this.finishNode(t,"VariableDeclaration")};_.parseWhileStatement=function(t){return this.next(),t.test=this.parseParenExpression(),this.labels.push(Nt),t.body=this.parseStatement("while"),this.labels.pop(),this.finishNode(t,"WhileStatement")};_.parseWithStatement=function(t){return this.strict&&this.raise(this.start,"'with' in strict mode"),this.next(),t.object=this.parseParenExpression(),t.body=this.parseStatement("with"),this.finishNode(t,"WithStatement")};_.parseEmptyStatement=function(t){return this.next(),this.finishNode(t,"EmptyStatement")};_.parseLabeledStatement=function(t,e,s,i){for(var r=0,n=this.labels;r<n.length;r+=1){var a=n[r];a.name===e&&this.raise(s.start,"Label '"+e+"' is already declared")}for(var u=this.type.isLoop?"loop":this.type===o._switch?"switch":null,c=this.labels.length-1;c>=0;c--){var l=this.labels[c];if(l.statementStart===t.start)l.statementStart=this.start,l.kind=u;else break}return this.labels.push({name:e,kind:u,statementStart:this.start}),t.body=this.parseStatement(i?i.indexOf("label")===-1?i+"label":i:"label"),this.labels.pop(),t.label=s,this.finishNode(t,"LabeledStatement")};_.parseExpressionStatement=function(t,e){return t.expression=e,this.semicolon(),this.finishNode(t,"ExpressionStatement")};_.parseBlock=function(t,e,s){for(t===void 0&&(t=!0),e===void 0&&(e=this.startNode()),e.body=[],this.expect(o.braceL),t&&this.enterScope(0);this.type!==o.braceR;){var i=this.parseStatement(null);e.body.push(i)}return s&&(this.strict=!1),this.next(),t&&this.exitScope(),this.finishNode(e,"BlockStatement")};_.parseFor=function(t,e){return t.init=e,this.expect(o.semi),t.test=this.type===o.semi?null:this.parseExpression(),this.expect(o.semi),t.update=this.type===o.parenR?null:this.parseExpression(),this.expect(o.parenR),t.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(t,"ForStatement")};_.parseForIn=function(t,e){var s=this.type===o._in;return this.next(),e.type==="VariableDeclaration"&&e.declarations[0].init!=null&&(!s||this.options.ecmaVersion<8||this.strict||e.kind!=="var"||e.declarations[0].id.type!=="Identifier")?this.raise(e.start,(s?"for-in":"for-of")+" loop variable declaration may not have an initializer"):e.type==="AssignmentPattern"&&this.raise(e.start,"Invalid left-hand side in for-loop"),t.left=e,t.right=s?this.parseExpression():this.parseMaybeAssign(),this.expect(o.parenR),t.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(t,s?"ForInStatement":"ForOfStatement")};_.parseVar=function(t,e,s){for(t.declarations=[],t.kind=s;;){var i=this.startNode();if(this.parseVarId(i,s),this.eat(o.eq)?i.init=this.parseMaybeAssign(e):s==="const"&&!(this.type===o._in||this.options.ecmaVersion>=6&&this.isContextual("of"))?this.unexpected():i.id.type!=="Identifier"&&!(e&&(this.type===o._in||this.isContextual("of")))?this.raise(this.lastTokEnd,"Complex binding patterns require an initialization value"):i.init=null,t.declarations.push(this.finishNode(i,"VariableDeclarator")),!this.eat(o.comma))break}return t};_.parseVarId=function(t,e){t.id=this.parseBindingAtom(),this.checkLVal(t.id,e==="var"?Rt:Z,!1)};var Pe=1,vt=2,Ls=4;_.parseFunction=function(t,e,s,i){this.initFunction(t),(this.options.ecmaVersion>=9||this.options.ecmaVersion>=6&&!i)&&(this.type===o.star&&e&vt&&this.unexpected(),t.generator=this.eat(o.star)),this.options.ecmaVersion>=8&&(t.async=!!i),e&Pe&&(t.id=e&Ls&&this.type!==o.name?null:this.parseIdent(),t.id&&!(e&vt)&&this.checkLVal(t.id,this.strict||t.generator||t.async?this.treatFunctionsAsVar?Rt:Z:Os));var r=this.yieldPos,n=this.awaitPos,a=this.awaitIdentPos;return this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,this.enterScope(Tt(t.async,t.generator)),e&Pe||(t.id=this.type===o.name?this.parseIdent():null),this.parseFunctionParams(t),this.parseFunctionBody(t,s,!1),this.yieldPos=r,this.awaitPos=n,this.awaitIdentPos=a,this.finishNode(t,e&Pe?"FunctionDeclaration":"FunctionExpression")};_.parseFunctionParams=function(t){this.expect(o.parenL),t.params=this.parseBindingList(o.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams()};_.parseClass=function(t,e){this.next();var s=this.strict;this.strict=!0,this.parseClassId(t,e),this.parseClassSuper(t);var i=this.startNode(),r=!1;for(i.body=[],this.expect(o.braceL);this.type!==o.braceR;){var n=this.parseClassElement(t.superClass!==null);n&&(i.body.push(n),n.type==="MethodDefinition"&&n.kind==="constructor"&&(r&&this.raise(n.start,"Duplicate constructor in the same class"),r=!0))}return this.strict=s,this.next(),t.body=this.finishNode(i,"ClassBody"),this.finishNode(t,e?"ClassDeclaration":"ClassExpression")};_.parseClassElement=function(t){var e=this;if(this.eat(o.semi))return null;var s=this.startNode(),i=function(c,l){l===void 0&&(l=!1);var h=e.start,p=e.startLoc;return e.eatContextual(c)?e.type!==o.parenL&&(!l||!e.canInsertSemicolon())?!0:(s.key&&e.unexpected(),s.computed=!1,s.key=e.startNodeAt(h,p),s.key.name=c,e.finishNode(s.key,"Identifier"),!1):!1};s.kind="method",s.static=i("static");var r=this.eat(o.star),n=!1;r||(this.options.ecmaVersion>=8&&i("async",!0)?(n=!0,r=this.options.ecmaVersion>=9&&this.eat(o.star)):i("get")?s.kind="get":i("set")&&(s.kind="set")),s.key||this.parsePropertyName(s);var a=s.key,u=!1;return!s.computed&&!s.static&&(a.type==="Identifier"&&a.name==="constructor"||a.type==="Literal"&&a.value==="constructor")?(s.kind!=="method"&&this.raise(a.start,"Constructor can't have get/set modifier"),r&&this.raise(a.start,"Constructor can't be a generator"),n&&this.raise(a.start,"Constructor can't be an async method"),s.kind="constructor",u=t):s.static&&a.type==="Identifier"&&a.name==="prototype"&&this.raise(a.start,"Classes may not have a static property named prototype"),this.parseClassMethod(s,r,n,u),s.kind==="get"&&s.value.params.length!==0&&this.raiseRecoverable(s.value.start,"getter should have no params"),s.kind==="set"&&s.value.params.length!==1&&this.raiseRecoverable(s.value.start,"setter should have exactly one param"),s.kind==="set"&&s.value.params[0].type==="RestElement"&&this.raiseRecoverable(s.value.params[0].start,"Setter cannot use rest params"),s};_.parseClassMethod=function(t,e,s,i){return t.value=this.parseMethod(e,s,i),this.finishNode(t,"MethodDefinition")};_.parseClassId=function(t,e){this.type===o.name?(t.id=this.parseIdent(),e&&this.checkLVal(t.id,Z,!1)):(e===!0&&this.unexpected(),t.id=null)};_.parseClassSuper=function(t){t.superClass=this.eat(o._extends)?this.parseExprSubscripts():null};_.parseExport=function(t,e){if(this.next(),this.eat(o.star))return this.options.ecmaVersion>=11&&(this.eatContextual("as")?(t.exported=this.parseIdent(!0),this.checkExport(e,t.exported.name,this.lastTokStart)):t.exported=null),this.expectContextual("from"),this.type!==o.string&&this.unexpected(),t.source=this.parseExprAtom(),this.semicolon(),this.finishNode(t,"ExportAllDeclaration");if(this.eat(o._default)){this.checkExport(e,"default",this.lastTokStart);var s;if(this.type===o._function||(s=this.isAsyncFunction())){var i=this.startNode();this.next(),s&&this.next(),t.declaration=this.parseFunction(i,Pe|Ls,!1,s)}else if(this.type===o._class){var r=this.startNode();t.declaration=this.parseClass(r,"nullableID")}else t.declaration=this.parseMaybeAssign(),this.semicolon();return this.finishNode(t,"ExportDefaultDeclaration")}if(this.shouldParseExportStatement())t.declaration=this.parseStatement(null),t.declaration.type==="VariableDeclaration"?this.checkVariableExport(e,t.declaration.declarations):this.checkExport(e,t.declaration.id.name,t.declaration.id.start),t.specifiers=[],t.source=null;else{if(t.declaration=null,t.specifiers=this.parseExportSpecifiers(e),this.eatContextual("from"))this.type!==o.string&&this.unexpected(),t.source=this.parseExprAtom();else{for(var n=0,a=t.specifiers;n<a.length;n+=1){var u=a[n];this.checkUnreserved(u.local),this.checkLocalExport(u.local)}t.source=null}this.semicolon()}return this.finishNode(t,"ExportNamedDeclaration")};_.checkExport=function(t,e,s){t&&(Je(t,e)&&this.raiseRecoverable(s,"Duplicate export '"+e+"'"),t[e]=!0)};_.checkPatternExport=function(t,e){var s=e.type;if(s==="Identifier")this.checkExport(t,e.name,e.start);else if(s==="ObjectPattern")for(var i=0,r=e.properties;i<r.length;i+=1){var n=r[i];this.checkPatternExport(t,n)}else if(s==="ArrayPattern")for(var a=0,u=e.elements;a<u.length;a+=1){var c=u[a];c&&this.checkPatternExport(t,c)}else s==="Property"?this.checkPatternExport(t,e.value):s==="AssignmentPattern"?this.checkPatternExport(t,e.left):s==="RestElement"?this.checkPatternExport(t,e.argument):s==="ParenthesizedExpression"&&this.checkPatternExport(t,e.expression)};_.checkVariableExport=function(t,e){if(t)for(var s=0,i=e;s<i.length;s+=1){var r=i[s];this.checkPatternExport(t,r.id)}};_.shouldParseExportStatement=function(){return this.type.keyword==="var"||this.type.keyword==="const"||this.type.keyword==="class"||this.type.keyword==="function"||this.isLet()||this.isAsyncFunction()};_.parseExportSpecifiers=function(t){var e=[],s=!0;for(this.expect(o.braceL);!this.eat(o.braceR);){if(s)s=!1;else if(this.expect(o.comma),this.afterTrailingComma(o.braceR))break;var i=this.startNode();i.local=this.parseIdent(!0),i.exported=this.eatContextual("as")?this.parseIdent(!0):i.local,this.checkExport(t,i.exported.name,i.exported.start),e.push(this.finishNode(i,"ExportSpecifier"))}return e};_.parseImport=function(t){return this.next(),this.type===o.string?(t.specifiers=Mi,t.source=this.parseExprAtom()):(t.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),t.source=this.type===o.string?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(t,"ImportDeclaration")};_.parseImportSpecifiers=function(){var t=[],e=!0;if(this.type===o.name){var s=this.startNode();if(s.local=this.parseIdent(),this.checkLVal(s.local,Z),t.push(this.finishNode(s,"ImportDefaultSpecifier")),!this.eat(o.comma))return t}if(this.type===o.star){var i=this.startNode();return this.next(),this.expectContextual("as"),i.local=this.parseIdent(),this.checkLVal(i.local,Z),t.push(this.finishNode(i,"ImportNamespaceSpecifier")),t}for(this.expect(o.braceL);!this.eat(o.braceR);){if(e)e=!1;else if(this.expect(o.comma),this.afterTrailingComma(o.braceR))break;var r=this.startNode();r.imported=this.parseIdent(!0),this.eatContextual("as")?r.local=this.parseIdent():(this.checkUnreserved(r.imported),r.local=r.imported),this.checkLVal(r.local,Z),t.push(this.finishNode(r,"ImportSpecifier"))}return t};_.adaptDirectivePrologue=function(t){for(var e=0;e<t.length&&this.isDirectiveCandidate(t[e]);++e)t[e].directive=t[e].expression.raw.slice(1,-1)};_.isDirectiveCandidate=function(t){return t.type==="ExpressionStatement"&&t.expression.type==="Literal"&&typeof t.expression.value=="string"&&(this.input[t.start]==='"'||this.input[t.start]==="'")};var ee=T.prototype;ee.toAssignable=function(t,e,s){if(this.options.ecmaVersion>=6&&t)switch(t.type){case"Identifier":this.inAsync&&t.name==="await"&&this.raise(t.start,"Cannot use 'await' as identifier inside an async function");break;case"ObjectPattern":case"ArrayPattern":case"RestElement":break;case"ObjectExpression":t.type="ObjectPattern",s&&this.checkPatternErrors(s,!0);for(var i=0,r=t.properties;i<r.length;i+=1){var n=r[i];this.toAssignable(n,e),n.type==="RestElement"&&(n.argument.type==="ArrayPattern"||n.argument.type==="ObjectPattern")&&this.raise(n.argument.start,"Unexpected token")}break;case"Property":t.kind!=="init"&&this.raise(t.key.start,"Object pattern can't contain getter or setter"),this.toAssignable(t.value,e);break;case"ArrayExpression":t.type="ArrayPattern",s&&this.checkPatternErrors(s,!0),this.toAssignableList(t.elements,e);break;case"SpreadElement":t.type="RestElement",this.toAssignable(t.argument,e),t.argument.type==="AssignmentPattern"&&this.raise(t.argument.start,"Rest elements cannot have a default value");break;case"AssignmentExpression":t.operator!=="="&&this.raise(t.left.end,"Only '=' operator can be used for specifying default value."),t.type="AssignmentPattern",delete t.operator,this.toAssignable(t.left,e);case"AssignmentPattern":break;case"ParenthesizedExpression":this.toAssignable(t.expression,e,s);break;case"ChainExpression":this.raiseRecoverable(t.start,"Optional chaining cannot appear in left-hand side");break;case"MemberExpression":if(!e)break;default:this.raise(t.start,"Assigning to rvalue")}else s&&this.checkPatternErrors(s,!0);return t};ee.toAssignableList=function(t,e){for(var s=t.length,i=0;i<s;i++){var r=t[i];r&&this.toAssignable(r,e)}if(s){var n=t[s-1];this.options.ecmaVersion===6&&e&&n&&n.type==="RestElement"&&n.argument.type!=="Identifier"&&this.unexpected(n.argument.start)}return t};ee.parseSpread=function(t){var e=this.startNode();return this.next(),e.argument=this.parseMaybeAssign(!1,t),this.finishNode(e,"SpreadElement")};ee.parseRestBinding=function(){var t=this.startNode();return this.next(),this.options.ecmaVersion===6&&this.type!==o.name&&this.unexpected(),t.argument=this.parseBindingAtom(),this.finishNode(t,"RestElement")};ee.parseBindingAtom=function(){if(this.options.ecmaVersion>=6)switch(this.type){case o.bracketL:var t=this.startNode();return this.next(),t.elements=this.parseBindingList(o.bracketR,!0,!0),this.finishNode(t,"ArrayPattern");case o.braceL:return this.parseObj(!0)}return this.parseIdent()};ee.parseBindingList=function(t,e,s){for(var i=[],r=!0;!this.eat(t);)if(r?r=!1:this.expect(o.comma),e&&this.type===o.comma)i.push(null);else{if(s&&this.afterTrailingComma(t))break;if(this.type===o.ellipsis){var n=this.parseRestBinding();this.parseBindingListItem(n),i.push(n),this.type===o.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.expect(t);break}else{var a=this.parseMaybeDefault(this.start,this.startLoc);this.parseBindingListItem(a),i.push(a)}}return i};ee.parseBindingListItem=function(t){return t};ee.parseMaybeDefault=function(t,e,s){if(s=s||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(o.eq))return s;var i=this.startNodeAt(t,e);return i.left=s,i.right=this.parseMaybeAssign(),this.finishNode(i,"AssignmentPattern")};ee.checkLVal=function(t,e,s){switch(e===void 0&&(e=Jt),t.type){case"Identifier":e===Z&&t.name==="let"&&this.raiseRecoverable(t.start,"let is disallowed as a lexically bound name"),this.strict&&this.reservedWordsStrictBind.test(t.name)&&this.raiseRecoverable(t.start,(e?"Binding ":"Assigning to ")+t.name+" in strict mode"),s&&(Je(s,t.name)&&this.raiseRecoverable(t.start,"Argument name clash"),s[t.name]=!0),e!==Jt&&e!==Fs&&this.declareName(t.name,e,t.start);break;case"ChainExpression":this.raiseRecoverable(t.start,"Optional chaining cannot appear in left-hand side");break;case"MemberExpression":e&&this.raiseRecoverable(t.start,"Binding member expression");break;case"ObjectPattern":for(var i=0,r=t.properties;i<r.length;i+=1){var n=r[i];this.checkLVal(n,e,s)}break;case"Property":this.checkLVal(t.value,e,s);break;case"ArrayPattern":for(var a=0,u=t.elements;a<u.length;a+=1){var c=u[a];c&&this.checkLVal(c,e,s)}break;case"AssignmentPattern":this.checkLVal(t.left,e,s);break;case"RestElement":this.checkLVal(t.argument,e,s);break;case"ParenthesizedExpression":this.checkLVal(t.expression,e,s);break;default:this.raise(t.start,(e?"Binding":"Assigning to")+" rvalue")}};var S=T.prototype;S.checkPropClash=function(t,e,s){if(!(this.options.ecmaVersion>=9&&t.type==="SpreadElement")&&!(this.options.ecmaVersion>=6&&(t.computed||t.method||t.shorthand))){var i=t.key,r;switch(i.type){case"Identifier":r=i.name;break;case"Literal":r=String(i.value);break;default:return}var n=t.kind;if(this.options.ecmaVersion>=6){r==="__proto__"&&n==="init"&&(e.proto&&(s?s.doubleProto<0&&(s.doubleProto=i.start):this.raiseRecoverable(i.start,"Redefinition of __proto__ property")),e.proto=!0);return}r="$"+r;var a=e[r];if(a){var u;n==="init"?u=this.strict&&a.init||a.get||a.set:u=a.init||a[n],u&&this.raiseRecoverable(i.start,"Redefinition of property")}else a=e[r]={init:!1,get:!1,set:!1};a[n]=!0}};S.parseExpression=function(t,e){var s=this.start,i=this.startLoc,r=this.parseMaybeAssign(t,e);if(this.type===o.comma){var n=this.startNodeAt(s,i);for(n.expressions=[r];this.eat(o.comma);)n.expressions.push(this.parseMaybeAssign(t,e));return this.finishNode(n,"SequenceExpression")}return r};S.parseMaybeAssign=function(t,e,s){if(this.isContextual("yield")){if(this.inGenerator)return this.parseYield(t);this.exprAllowed=!1}var i=!1,r=-1,n=-1;e?(r=e.parenthesizedAssign,n=e.trailingComma,e.parenthesizedAssign=e.trailingComma=-1):(e=new Ye,i=!0);var a=this.start,u=this.startLoc;(this.type===o.parenL||this.type===o.name)&&(this.potentialArrowAt=this.start);var c=this.parseMaybeConditional(t,e);if(s&&(c=s.call(this,c,a,u)),this.type.isAssign){var l=this.startNodeAt(a,u);return l.operator=this.value,l.left=this.type===o.eq?this.toAssignable(c,!1,e):c,i||(e.parenthesizedAssign=e.trailingComma=e.doubleProto=-1),e.shorthandAssign>=l.left.start&&(e.shorthandAssign=-1),this.checkLVal(c),this.next(),l.right=this.parseMaybeAssign(t),this.finishNode(l,"AssignmentExpression")}else i&&this.checkExpressionErrors(e,!0);return r>-1&&(e.parenthesizedAssign=r),n>-1&&(e.trailingComma=n),c};S.parseMaybeConditional=function(t,e){var s=this.start,i=this.startLoc,r=this.parseExprOps(t,e);if(this.checkExpressionErrors(e))return r;if(this.eat(o.question)){var n=this.startNodeAt(s,i);return n.test=r,n.consequent=this.parseMaybeAssign(),this.expect(o.colon),n.alternate=this.parseMaybeAssign(t),this.finishNode(n,"ConditionalExpression")}return r};S.parseExprOps=function(t,e){var s=this.start,i=this.startLoc,r=this.parseMaybeUnary(e,!1);return this.checkExpressionErrors(e)||r.start===s&&r.type==="ArrowFunctionExpression"?r:this.parseExprOp(r,s,i,-1,t)};S.parseExprOp=function(t,e,s,i,r){var n=this.type.binop;if(n!=null&&(!r||this.type!==o._in)&&n>i){var a=this.type===o.logicalOR||this.type===o.logicalAND,u=this.type===o.coalesce;u&&(n=o.logicalAND.binop);var c=this.value;this.next();var l=this.start,h=this.startLoc,p=this.parseExprOp(this.parseMaybeUnary(null,!1),l,h,n,r),m=this.buildBinary(e,s,t,p,c,a||u);return(a&&this.type===o.coalesce||u&&(this.type===o.logicalOR||this.type===o.logicalAND))&&this.raiseRecoverable(this.start,"Logical expressions and coalesce expressions cannot be mixed. Wrap either by parentheses"),this.parseExprOp(m,e,s,i,r)}return t};S.buildBinary=function(t,e,s,i,r,n){var a=this.startNodeAt(t,e);return a.left=s,a.operator=r,a.right=i,this.finishNode(a,n?"LogicalExpression":"BinaryExpression")};S.parseMaybeUnary=function(t,e){var s=this.start,i=this.startLoc,r;if(this.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))r=this.parseAwait(),e=!0;else if(this.type.prefix){var n=this.startNode(),a=this.type===o.incDec;n.operator=this.value,n.prefix=!0,this.next(),n.argument=this.parseMaybeUnary(null,!0),this.checkExpressionErrors(t,!0),a?this.checkLVal(n.argument):this.strict&&n.operator==="delete"&&n.argument.type==="Identifier"?this.raiseRecoverable(n.start,"Deleting local variable in strict mode"):e=!0,r=this.finishNode(n,a?"UpdateExpression":"UnaryExpression")}else{if(r=this.parseExprSubscripts(t),this.checkExpressionErrors(t))return r;for(;this.type.postfix&&!this.canInsertSemicolon();){var u=this.startNodeAt(s,i);u.operator=this.value,u.prefix=!1,u.argument=r,this.checkLVal(r),this.next(),r=this.finishNode(u,"UpdateExpression")}}return!e&&this.eat(o.starstar)?this.buildBinary(s,i,r,this.parseMaybeUnary(null,!1),"**",!1):r};S.parseExprSubscripts=function(t){var e=this.start,s=this.startLoc,i=this.parseExprAtom(t)