7 lines
133 KiB
JavaScript
7 lines
133 KiB
JavaScript
/*acorn.min.js*/
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||
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this.type===_.name&&this.value===t&&!this.containsEsc},F.eatContextual=function(t){return!!this.isContextual(t)&&(this.next(),!0)},F.expectContextual=function(t){this.eatContextual(t)||this.unexpected()},F.canInsertSemicolon=function(){return this.type===_.eof||this.type===_.braceR||b.test(this.input.slice(this.lastTokEnd,this.start))},F.insertSemicolon=function(){if(this.canInsertSemicolon())return this.options.onInsertedSemicolon&&this.options.onInsertedSemicolon(this.lastTokEnd,this.lastTokEndLoc),!0},F.semicolon=function(){this.eat(_.semi)||this.insertSemicolon()||this.unexpected()},F.afterTrailingComma=function(t,e){if(this.type===t)return this.options.onTrailingComma&&this.options.onTrailingComma(this.lastTokStart,this.lastTokStartLoc),e||this.next(),!0},F.expect=function(t){this.eat(t)||this.unexpected()},F.unexpected=function(t){this.raise(null!=t?t:this.start,"Unexpected token")},F.checkPatternErrors=function(t,e){if(t){-1<t.trailingComma&&this.raiseRecoverable(t.trailingComma,"Comma is not permitted after the rest element");var i=e?t.parenthesizedAssign:t.parenthesizedBind;-1<i&&this.raiseRecoverable(i,"Parenthesized pattern")}},F.checkExpressionErrors=function(t,e){if(!t)return!1;var i=t.shorthandAssign,s=t.doubleProto;if(!e)return 0<=i||0<=s;0<=i&&this.raise(i,"Shorthand property assignments are valid only in destructuring patterns"),0<=s&&this.raiseRecoverable(s,"Redefinition of __proto__ property")},F.checkYieldAwaitInDefaultParams=function(){this.yieldPos&&(!this.awaitPos||this.yieldPos<this.awaitPos)&&this.raise(this.yieldPos,"Yield expression cannot be a default value"),this.awaitPos&&this.raise(this.awaitPos,"Await expression cannot be a default value")},F.isSimpleAssignTarget=function(t){return"ParenthesizedExpression"===t.type?this.isSimpleAssignTarget(t.expression):"Identifier"===t.type||"MemberExpression"===t.type};var W=O.prototype;W.parseTopLevel=function(t){var e={};for(t.body||(t.body=[]);this.type!==_.eof;){var i=this.parseStatement(null,!0,e);t.body.push(i)}if(this.inModule)for(var s=0,a=Object.keys(this.undefinedExports);s<a.length;s+=1){var r=a[s];this.raiseRecoverable(this.undefinedExports[r].start,"Export '"+r+"' is not defined")}return this.adaptDirectivePrologue(t.body),this.next(),t.sourceType=this.options.sourceType,this.finishNode(t,"Program")};var j={kind:"loop"},q={kind:"switch"};W.isLet=function(t){if(this.options.ecmaVersion<6||!this.isContextual("let"))return!1;w.lastIndex=this.pos;var e=w.exec(this.input),i=this.pos+e[0].length,s=this.input.charCodeAt(i);if(91===s)return!0;if(t)return!1;if(123===s)return!0;if(l(s,!0)){for(var a=i+1;d(this.input.charCodeAt(a),!0);)++a;var r=this.input.slice(i,a);if(!h.test(r))return!0}return!1},W.isAsyncFunction=function(){if(this.options.ecmaVersion<8||!this.isContextual("async"))return!1;w.lastIndex=this.pos;var t=w.exec(this.input),e=this.pos+t[0].length;return!(b.test(this.input.slice(this.pos,e))||"function"!==this.input.slice(e,e+8)||e+8!==this.input.length&&d(this.input.charAt(e+8)))},W.parseStatement=function(t,e,i){var s,a=this.type,r=this.startNode();switch(this.isLet(t)&&(a=_._var,s="let"),a){case _._break:case _._continue:return this.parseBreakContinueStatement(r,a.keyword);case _._debugger:return this.parseDebuggerStatement(r);case _._do:return this.parseDoStatement(r);case _._for:return this.parseForStatement(r);case _._function:return t&&(this.strict||"if"!==t&&"label"!==t)&&6<=this.options.ecmaVersion&&this.unexpected(),this.parseFunctionStatement(r,!1,!t);case _._class:return t&&this.unexpected(),this.parseClass(r,!0);case _._if:return this.parseIfStatement(r);case _._return:return this.parseReturnStatement(r);case _._switch:return this.parseSwitchStatement(r);case _._throw:return this.parseThrowStatement(r);case _._try:return this.parseTryStatement(r);case _._const:case _._var:return s=s||this.value,t&&"var"!==s&&this.unexpected(),this.parseVarStatement(r,s);case _._while:return this.parseWhileStatement(r);case _._with:return this.parseWithStatement(r);case _.braceL:return this.parseBlock(!0,r);case _.semi:return this.parseEmptyStatement(r);case _._export:case _._import:if(10<this.options.ecmaVersion&&a===_._import){w.lastIndex=this.pos;var n=w.exec(this.input),o=this.pos+n[0].length;if(40===this.input.charCodeAt(o))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'")),a===_._import?this.parseImport(r):this.parseExport(r,i);default:if(this.isAsyncFunction())return t&&this.unexpected(),this.next(),this.parseFunctionStatement(r,!0,!t);var h=this.value,p=this.parseExpression();return a===_.name&&"Identifier"===p.type&&this.eat(_.colon)?this.parseLabeledStatement(r,h,p,t):this.parseExpressionStatement(r,p)}},W.parseBreakContinueStatement=function(t,e){var i="break"===e;this.next(),this.eat(_.semi)||this.insertSemicolon()?t.label=null:this.type!==_.name?this.unexpected():(t.label=this.parseIdent(),this.semicolon());for(var s=0;s<this.labels.length;++s){var a=this.labels[s];if(null==t.label||a.name===t.label.name){if(null!=a.kind&&(i||"loop"===a.kind))break;if(t.label&&i)break}}return s===this.labels.length&&this.raise(t.start,"Unsyntactic "+e),this.finishNode(t,i?"BreakStatement":"ContinueStatement")},W.parseDebuggerStatement=function(t){return this.next(),this.semicolon(),this.finishNode(t,"DebuggerStatement")},W.parseDoStatement=function(t){return this.next(),this.labels.push(j),t.body=this.parseStatement("do"),this.labels.pop(),this.expect(_._while),t.test=this.parseParenExpression(),6<=this.options.ecmaVersion?this.eat(_.semi):this.semicolon(),this.finishNode(t,"DoWhileStatement")},W.parseForStatement=function(t){this.next();var e=9<=this.options.ecmaVersion&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction)&&this.eatContextual("await")?this.lastTokStart:-1;if(this.labels.push(j),this.enterScope(0),this.expect(_.parenL),this.type===_.semi)return-1<e&&this.unexpected(e),this.parseFor(t,null);var i=this.isLet();if(this.type===_._var||this.type===_._const||i){var s=this.startNode(),a=i?"let":this.value;return this.next(),this.parseVar(s,!0,a),this.finishNode(s,"VariableDeclaration"),(this.type===_._in||6<=this.options.ecmaVersion&&this.isContextual("of"))&&1===s.declarations.length?(9<=this.options.ecmaVersion&&(this.type===_._in?-1<e&&this.unexpected(e):t.await=-1<e),this.parseForIn(t,s)):(-1<e&&this.unexpected(e),this.parseFor(t,s))}var r=new G,n=this.parseExpression(!0,r);return this.type===_._in||6<=this.options.ecmaVersion&&this.isContextual("of")?(9<=this.options.ecmaVersion&&(this.type===_._in?-1<e&&this.unexpected(e):t.await=-1<e),this.toAssignable(n,!1,r),this.checkLVal(n),this.parseForIn(t,n)):(this.checkExpressionErrors(r,!0),-1<e&&this.unexpected(e),this.parseFor(t,n))},W.parseFunctionStatement=function(t,e,i){return this.next(),this.parseFunction(t,z|(i?0:Q),!1,e)},W.parseIfStatement=function(t){return this.next(),t.test=this.parseParenExpression(),t.consequent=this.parseStatement("if"),t.alternate=this.eat(_._else)?this.parseStatement("if"):null,this.finishNode(t,"IfStatement")},W.parseReturnStatement=function(t){return this.inFunction||this.options.allowReturnOutsideFunction||this.raise(this.start,"'return' outside of function"),this.next(),this.eat(_.semi)||this.insertSemicolon()?t.argument=null:(t.argument=this.parseExpression(),this.semicolon()),this.finishNode(t,"ReturnStatement")},W.parseSwitchStatement=function(t){var e;this.next(),t.discriminant=this.parseParenExpression(),t.cases=[],this.expect(_.braceL),this.labels.push(q),this.enterScope(0);for(var i=!1;this.type!==_.braceR;)if(this.type===_._case||this.type===_._default){var s=this.type===_._case;e&&this.finishNode(e,"SwitchCase"),t.cases.push(e=this.startNode()),e.consequent=[],this.next(),s?e.test=this.parseExpression():(i&&this.raiseRecoverable(this.lastTokStart,"Multiple default clauses"),i=!0,e.test=null),this.expect(_.colon)}else e||this.unexpected(),e.consequent.push(this.parseStatement(null));return this.exitScope(),e&&this.finishNode(e,"SwitchCase"),this.next(),this.labels.pop(),this.finishNode(t,"SwitchStatement")},W.parseThrowStatement=function(t){return this.next(),b.test(this.input.slice(this.lastTokEnd,this.start))&&this.raise(this.lastTokEnd,"Illegal newline after throw"),t.argument=this.parseExpression(),this.semicolon(),this.finishNode(t,"ThrowStatement")};var K=[];W.parseTryStatement=function(t){if(this.next(),t.block=this.parseBlock(),t.handler=null,this.type===_._catch){var e=this.startNode();if(this.next(),this.eat(_.parenL)){e.param=this.parseBindingAtom();var i="Identifier"===e.param.type;this.enterScope(i?32:0),this.checkLVal(e.param,i?4:2),this.expect(_.parenR)}else this.options.ecmaVersion<10&&this.unexpected(),e.param=null,this.enterScope(0);e.body=this.parseBlock(!1),this.exitScope(),t.handler=this.finishNode(e,"CatchClause")}return t.finalizer=this.eat(_._finally)?this.parseBlock():null,t.handler||t.finalizer||this.raise(t.start,"Missing catch or finally clause"),this.finishNode(t,"TryStatement")},W.parseVarStatement=function(t,e){return this.next(),this.parseVar(t,!1,e),this.semicolon(),this.finishNode(t,"VariableDeclaration")},W.parseWhileStatement=function(t){return this.next(),t.test=this.parseParenExpression(),this.labels.push(j),t.body=this.parseStatement("while"),this.labels.pop(),this.finishNode(t,"WhileStatement")},W.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")},W.parseEmptyStatement=function(t){return this.next(),this.finishNode(t,"EmptyStatement")},W.parseLabeledStatement=function(t,e,i,s){for(var a=0,r=this.labels;a<r.length;a+=1){r[a].name===e&&this.raise(i.start,"Label '"+e+"' is already declared")}for(var n=this.type.isLoop?"loop":this.type===_._switch?"switch":null,o=this.labels.length-1;0<=o;o--){var h=this.labels[o];if(h.statementStart!==t.start)break;h.statementStart=this.start,h.kind=n}return this.labels.push({name:e,kind:n,statementStart:this.start}),t.body=this.parseStatement(s?-1===s.indexOf("label")?s+"label":s:"label"),this.labels.pop(),t.label=i,this.finishNode(t,"LabeledStatement")},W.parseExpressionStatement=function(t,e){return t.expression=e,this.semicolon(),this.finishNode(t,"ExpressionStatement")},W.parseBlock=function(t,e){for(void 0===t&&(t=!0),void 0===e&&(e=this.startNode()),e.body=[],this.expect(_.braceL),t&&this.enterScope(0);!this.eat(_.braceR);){var i=this.parseStatement(null);e.body.push(i)}return t&&this.exitScope(),this.finishNode(e,"BlockStatement")},W.parseFor=function(t,e){return t.init=e,this.expect(_.semi),t.test=this.type===_.semi?null:this.parseExpression(),this.expect(_.semi),t.update=this.type===_.parenR?null:this.parseExpression(),this.expect(_.parenR),t.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(t,"ForStatement")},W.parseForIn=function(t,e){var i=this.type===_._in;return this.next(),"VariableDeclaration"===e.type&&null!=e.declarations[0].init&&(!i||this.options.ecmaVersion<8||this.strict||"var"!==e.kind||"Identifier"!==e.declarations[0].id.type)?this.raise(e.start,(i?"for-in":"for-of")+" loop variable declaration may not have an initializer"):"AssignmentPattern"===e.type&&this.raise(e.start,"Invalid left-hand side in for-loop"),t.left=e,t.right=i?this.parseExpression():this.parseMaybeAssign(),this.expect(_.parenR),t.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(t,i?"ForInStatement":"ForOfStatement")},W.parseVar=function(t,e,i){for(t.declarations=[],t.kind=i;;){var s=this.startNode();if(this.parseVarId(s,i),this.eat(_.eq)?s.init=this.parseMaybeAssign(e):"const"!==i||this.type===_._in||6<=this.options.ecmaVersion&&this.isContextual("of")?"Identifier"===s.id.type||e&&(this.type===_._in||this.isContextual("of"))?s.init=null:this.raise(this.lastTokEnd,"Complex binding patterns require an initialization value"):this.unexpected(),t.declarations.push(this.finishNode(s,"VariableDeclarator")),!this.eat(_.comma))break}return t},W.parseVarId=function(t,e){t.id=this.parseBindingAtom(),this.checkLVal(t.id,"var"===e?1:2,!1)};var z=1,Q=2;W.parseFunction=function(t,e,i,s){this.initFunction(t),(9<=this.options.ecmaVersion||6<=this.options.ecmaVersion&&!s)&&(this.type===_.star&&e&Q&&this.unexpected(),t.generator=this.eat(_.star)),8<=this.options.ecmaVersion&&(t.async=!!s),e&z&&(t.id=4&e&&this.type!==_.name?null:this.parseIdent(),!t.id||e&Q||this.checkLVal(t.id,this.strict||t.generator||t.async?this.treatFunctionsAsVar?1:2:3));var a=this.yieldPos,r=this.awaitPos,n=this.awaitIdentPos;return this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,this.enterScope(D(t.async,t.generator)),e&z||(t.id=this.type===_.name?this.parseIdent():null),this.parseFunctionParams(t),this.parseFunctionBody(t,i,!1),this.yieldPos=a,this.awaitPos=r,this.awaitIdentPos=n,this.finishNode(t,e&z?"FunctionDeclaration":"FunctionExpression")},W.parseFunctionParams=function(t){this.expect(_.parenL),t.params=this.parseBindingList(_.parenR,!1,8<=this.options.ecmaVersion),this.checkYieldAwaitInDefaultParams()},W.parseClass=function(t,e){this.next();var i=this.strict;this.strict=!0,this.parseClassId(t,e),this.parseClassSuper(t);var s=this.startNode(),a=!1;for(s.body=[],this.expect(_.braceL);!this.eat(_.braceR);){var r=this.parseClassElement(null!==t.superClass);r&&(s.body.push(r),"MethodDefinition"===r.type&&"constructor"===r.kind&&(a&&this.raise(r.start,"Duplicate constructor in the same class"),a=!0))}return t.body=this.finishNode(s,"ClassBody"),this.strict=i,this.finishNode(t,e?"ClassDeclaration":"ClassExpression")},W.parseClassElement=function(t){var a=this;if(this.eat(_.semi))return null;function e(t,e){void 0===e&&(e=!1);var i=a.start,s=a.startLoc;return!!a.eatContextual(t)&&(!(a.type===_.parenL||e&&a.canInsertSemicolon())||(r.key&&a.unexpected(),r.computed=!1,r.key=a.startNodeAt(i,s),r.key.name=t,a.finishNode(r.key,"Identifier"),!1))}var r=this.startNode();r.kind="method",r.static=e("static");var i=this.eat(_.star),s=!1;i||(8<=this.options.ecmaVersion&&e("async",!0)?(s=!0,i=9<=this.options.ecmaVersion&&this.eat(_.star)):e("get")?r.kind="get":e("set")&&(r.kind="set")),r.key||this.parsePropertyName(r);var n=r.key,o=!1;return r.computed||r.static||!("Identifier"===n.type&&"constructor"===n.name||"Literal"===n.type&&"constructor"===n.value)?r.static&&"Identifier"===n.type&&"prototype"===n.name&&this.raise(n.start,"Classes may not have a static property named prototype"):("method"!==r.kind&&this.raise(n.start,"Constructor can't have get/set modifier"),i&&this.raise(n.start,"Constructor can't be a generator"),s&&this.raise(n.start,"Constructor can't be an async method"),r.kind="constructor",o=t),this.parseClassMethod(r,i,s,o),"get"===r.kind&&0!==r.value.params.length&&this.raiseRecoverable(r.value.start,"getter should have no params"),"set"===r.kind&&1!==r.value.params.length&&this.raiseRecoverable(r.value.start,"setter should have exactly one param"),"set"===r.kind&&"RestElement"===r.value.params[0].type&&this.raiseRecoverable(r.value.params[0].start,"Setter cannot use rest params"),r},W.parseClassMethod=function(t,e,i,s){return t.value=this.parseMethod(e,i,s),this.finishNode(t,"MethodDefinition")},W.parseClassId=function(t,e){this.type===_.name?(t.id=this.parseIdent(),e&&this.checkLVal(t.id,2,!1)):(!0===e&&this.unexpected(),t.id=null)},W.parseClassSuper=function(t){t.superClass=this.eat(_._extends)?this.parseExprSubscripts():null},W.parseExport=function(t,e){if(this.next(),this.eat(_.star))return this.expectContextual("from"),this.type!==_.string&&this.unexpected(),t.source=this.parseExprAtom(),this.semicolon(),this.finishNode(t,"ExportAllDeclaration");if(this.eat(_._default)){var i;if(this.checkExport(e,"default",this.lastTokStart),this.type===_._function||(i=this.isAsyncFunction())){var s=this.startNode();this.next(),i&&this.next(),t.declaration=this.parseFunction(s,4|z,!1,i)}else if(this.type===_._class){var a=this.startNode();t.declaration=this.parseClass(a,"nullableID")}else t.declaration=this.parseMaybeAssign(),this.semicolon();return this.finishNode(t,"ExportDefaultDeclaration")}if(this.shouldParseExportStatement())t.declaration=this.parseStatement(null),"VariableDeclaration"===t.declaration.type?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!==_.string&&this.unexpected(),t.source=this.parseExprAtom();else{for(var r=0,n=t.specifiers;r<n.length;r+=1){var o=n[r];this.checkUnreserved(o.local),this.checkLocalExport(o.local)}t.source=null}this.semicolon()}return this.finishNode(t,"ExportNamedDeclaration")},W.checkExport=function(t,e,i){t&&(P(t,e)&&this.raiseRecoverable(i,"Duplicate export '"+e+"'"),t[e]=!0)},W.checkPatternExport=function(t,e){var i=e.type;if("Identifier"===i)this.checkExport(t,e.name,e.start);else if("ObjectPattern"===i)for(var s=0,a=e.properties;s<a.length;s+=1){var r=a[s];this.checkPatternExport(t,r)}else if("ArrayPattern"===i)for(var n=0,o=e.elements;n<o.length;n+=1){var h=o[n];h&&this.checkPatternExport(t,h)}else"Property"===i?this.checkPatternExport(t,e.value):"AssignmentPattern"===i?this.checkPatternExport(t,e.left):"RestElement"===i?this.checkPatternExport(t,e.argument):"ParenthesizedExpression"===i&&this.checkPatternExport(t,e.expression)},W.checkVariableExport=function(t,e){if(t)for(var i=0,s=e;i<s.length;i+=1){var a=s[i];this.checkPatternExport(t,a.id)}},W.shouldParseExportStatement=function(){return"var"===this.type.keyword||"const"===this.type.keyword||"class"===this.type.keyword||"function"===this.type.keyword||this.isLet()||this.isAsyncFunction()},W.parseExportSpecifiers=function(t){var e=[],i=!0;for(this.expect(_.braceL);!this.eat(_.braceR);){if(i)i=!1;else if(this.expect(_.comma),this.afterTrailingComma(_.braceR))break;var s=this.startNode();s.local=this.parseIdent(!0),s.exported=this.eatContextual("as")?this.parseIdent(!0):s.local,this.checkExport(t,s.exported.name,s.exported.start),e.push(this.finishNode(s,"ExportSpecifier"))}return e},W.parseImport=function(t){return this.next(),this.type===_.string?(t.specifiers=K,t.source=this.parseExprAtom()):(t.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),t.source=this.type===_.string?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(t,"ImportDeclaration")},W.parseImportSpecifiers=function(){var t=[],e=!0;if(this.type===_.name){var i=this.startNode();if(i.local=this.parseIdent(),this.checkLVal(i.local,2),t.push(this.finishNode(i,"ImportDefaultSpecifier")),!this.eat(_.comma))return t}if(this.type===_.star){var s=this.startNode();return this.next(),this.expectContextual("as"),s.local=this.parseIdent(),this.checkLVal(s.local,2),t.push(this.finishNode(s,"ImportNamespaceSpecifier")),t}for(this.expect(_.braceL);!this.eat(_.braceR);){if(e)e=!1;else if(this.expect(_.comma),this.afterTrailingComma(_.braceR))break;var a=this.startNode();a.imported=this.parseIdent(!0),this.eatContextual("as")?a.local=this.parseIdent():(this.checkUnreserved(a.imported),a.local=a.imported),this.checkLVal(a.local,2),t.push(this.finishNode(a,"ImportSpecifier"))}return t},W.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)},W.isDirectiveCandidate=function(t){return"ExpressionStatement"===t.type&&"Literal"===t.expression.type&&"string"==typeof t.expression.value&&('"'===this.input[t.start]||"'"===this.input[t.start])};var X=O.prototype;X.toAssignable=function(t,e,i){if(6<=this.options.ecmaVersion&&t)switch(t.type){case"Identifier":this.inAsync&&"await"===t.name&&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",i&&this.checkPatternErrors(i,!0);for(var s=0,a=t.properties;s<a.length;s+=1){var r=a[s];this.toAssignable(r,e),"RestElement"!==r.type||"ArrayPattern"!==r.argument.type&&"ObjectPattern"!==r.argument.type||this.raise(r.argument.start,"Unexpected token")}break;case"Property":"init"!==t.kind&&this.raise(t.key.start,"Object pattern can't contain getter or setter"),this.toAssignable(t.value,e);break;case"ArrayExpression":t.type="ArrayPattern",i&&this.checkPatternErrors(i,!0),this.toAssignableList(t.elements,e);break;case"SpreadElement":t.type="RestElement",this.toAssignable(t.argument,e),"AssignmentPattern"===t.argument.type&&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,i);break;case"MemberExpression":if(!e)break;default:this.raise(t.start,"Assigning to rvalue")}else i&&this.checkPatternErrors(i,!0);return t},X.toAssignableList=function(t,e){for(var i=t.length,s=0;s<i;s++){var a=t[s];a&&this.toAssignable(a,e)}if(i){var r=t[i-1];6===this.options.ecmaVersion&&e&&r&&"RestElement"===r.type&&"Identifier"!==r.argument.type&&this.unexpected(r.argument.start)}return t},X.parseSpread=function(t){var e=this.startNode();return this.next(),e.argument=this.parseMaybeAssign(!1,t),this.finishNode(e,"SpreadElement")},X.parseRestBinding=function(){var t=this.startNode();return this.next(),6===this.options.ecmaVersion&&this.type!==_.name&&this.unexpected(),t.argument=this.parseBindingAtom(),this.finishNode(t,"RestElement")},X.parseBindingAtom=function(){if(6<=this.options.ecmaVersion)switch(this.type){case _.bracketL:var t=this.startNode();return this.next(),t.elements=this.parseBindingList(_.bracketR,!0,!0),this.finishNode(t,"ArrayPattern");case _.braceL:return this.parseObj(!0)}return this.parseIdent()},X.parseBindingList=function(t,e,i){for(var s=[],a=!0;!this.eat(t);)if(a?a=!1:this.expect(_.comma),e&&this.type===_.comma)s.push(null);else{if(i&&this.afterTrailingComma(t))break;if(this.type===_.ellipsis){var r=this.parseRestBinding();this.parseBindingListItem(r),s.push(r),this.type===_.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.expect(t);break}var n=this.parseMaybeDefault(this.start,this.startLoc);this.parseBindingListItem(n),s.push(n)}return s},X.parseBindingListItem=function(t){return t},X.parseMaybeDefault=function(t,e,i){if(i=i||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(_.eq))return i;var s=this.startNodeAt(t,e);return s.left=i,s.right=this.parseMaybeAssign(),this.finishNode(s,"AssignmentPattern")},X.checkLVal=function(t,e,i){switch(void 0===e&&(e=0),t.type){case"Identifier":2===e&&"let"===t.name&&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"),i&&(P(i,t.name)&&this.raiseRecoverable(t.start,"Argument name clash"),i[t.name]=!0),0!==e&&5!==e&&this.declareName(t.name,e,t.start);break;case"MemberExpression":e&&this.raiseRecoverable(t.start,"Binding member expression");break;case"ObjectPattern":for(var s=0,a=t.properties;s<a.length;s+=1){var r=a[s];this.checkLVal(r,e,i)}break;case"Property":this.checkLVal(t.value,e,i);break;case"ArrayPattern":for(var n=0,o=t.elements;n<o.length;n+=1){var h=o[n];h&&this.checkLVal(h,e,i)}break;case"AssignmentPattern":this.checkLVal(t.left,e,i);break;case"RestElement":this.checkLVal(t.argument,e,i);break;case"ParenthesizedExpression":this.checkLVal(t.expression,e,i);break;default:this.raise(t.start,(e?"Binding":"Assigning to")+" rvalue")}};var Z=O.prototype;Z.checkPropClash=function(t,e,i){if(!(9<=this.options.ecmaVersion&&"SpreadElement"===t.type||6<=this.options.ecmaVersion&&(t.computed||t.method||t.shorthand))){var s,a=t.key;switch(a.type){case"Identifier":s=a.name;break;case"Literal":s=String(a.value);break;default:return}var r=t.kind;if(6<=this.options.ecmaVersion)"__proto__"===s&&"init"===r&&(e.proto&&(i&&i.doubleProto<0?i.doubleProto=a.start:this.raiseRecoverable(a.start,"Redefinition of __proto__ property")),e.proto=!0);else{var n=e[s="$"+s];if(n)("init"===r?this.strict&&n.init||n.get||n.set:n.init||n[r])&&this.raiseRecoverable(a.start,"Redefinition of property");else n=e[s]={init:!1,get:!1,set:!1};n[r]=!0}}},Z.parseExpression=function(t,e){var i=this.start,s=this.startLoc,a=this.parseMaybeAssign(t,e);if(this.type!==_.comma)return a;var r=this.startNodeAt(i,s);for(r.expressions=[a];this.eat(_.comma);)r.expressions.push(this.parseMaybeAssign(t,e));return this.finishNode(r,"SequenceExpression")},Z.parseMaybeAssign=function(t,e,i){if(this.isContextual("yield")){if(this.inGenerator)return this.parseYield(t);this.exprAllowed=!1}var s=!1,a=-1,r=-1,n=-1;e?(a=e.parenthesizedAssign,r=e.trailingComma,n=e.shorthandAssign,e.parenthesizedAssign=e.trailingComma=e.shorthandAssign=-1):(e=new G,s=!0);var o=this.start,h=this.startLoc;this.type!==_.parenL&&this.type!==_.name||(this.potentialArrowAt=this.start);var p=this.parseMaybeConditional(t,e);if(i&&(p=i.call(this,p,o,h)),this.type.isAssign){var c=this.startNodeAt(o,h);return c.operator=this.value,c.left=this.type===_.eq?this.toAssignable(p,!1,e):p,s||G.call(e),e.shorthandAssign=-1,this.checkLVal(p),this.next(),c.right=this.parseMaybeAssign(t),this.finishNode(c,"AssignmentExpression")}return s&&this.checkExpressionErrors(e,!0),-1<a&&(e.parenthesizedAssign=a),-1<r&&(e.trailingComma=r),-1<n&&(e.shorthandAssign=n),p},Z.parseMaybeConditional=function(t,e){var i=this.start,s=this.startLoc,a=this.parseExprOps(t,e);if(this.checkExpressionErrors(e))return a;if(this.eat(_.question)){var r=this.startNodeAt(i,s);return r.test=a,r.consequent=this.parseMaybeAssign(),this.expect(_.colon),r.alternate=this.parseMaybeAssign(t),this.finishNode(r,"ConditionalExpression")}return a},Z.parseExprOps=function(t,e){var i=this.start,s=this.startLoc,a=this.parseMaybeUnary(e,!1);return this.checkExpressionErrors(e)?a:a.start===i&&"ArrowFunctionExpression"===a.type?a:this.parseExprOp(a,i,s,-1,t)},Z.parseExprOp=function(t,e,i,s,a){var r=this.type.binop;if(null==r||a&&this.type===_._in||!(s<r))return t;var n=this.type===_.logicalOR||this.type===_.logicalAND,o=this.value;this.next();var h=this.start,p=this.startLoc,c=this.parseExprOp(this.parseMaybeUnary(null,!1),h,p,r,a),u=this.buildBinary(e,i,t,c,o,n);return this.parseExprOp(u,e,i,s,a)},Z.buildBinary=function(t,e,i,s,a,r){var n=this.startNodeAt(t,e);return n.left=i,n.operator=a,n.right=s,this.finishNode(n,r?"LogicalExpression":"BinaryExpression")},Z.parseMaybeUnary=function(t,e){var i,s=this.start,a=this.startLoc;if(this.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))i=this.parseAwait(),e=!0;else if(this.type.prefix){var r=this.startNode(),n=this.type===_.incDec;r.operator=this.value,r.prefix=!0,this.next(),r.argument=this.parseMaybeUnary(null,!0),this.checkExpressionErrors(t,!0),n?this.checkLVal(r.argument):this.strict&&"delete"===r.operator&&"Identifier"===r.argument.type?this.raiseRecoverable(r.start,"Deleting local variable in strict mode"):e=!0,i=this.finishNode(r,n?"UpdateExpression":"UnaryExpression")}else{if(i=this.parseExprSubscripts(t),this.checkExpressionErrors(t))return i;for(;this.type.postfix&&!this.canInsertSemicolon();){var o=this.startNodeAt(s,a);o.operator=this.value,o.prefix=!1,o.argument=i,this.checkLVal(i),this.next(),i=this.finishNode(o,"UpdateExpression")}}return!e&&this.eat(_.starstar)?this.buildBinary(s,a,i,this.parseMaybeUnary(null,!1),"**",!1):i},Z.parseExprSubscripts=function(t){var e=this.start,i=this.startLoc,s=this.parseExprAtom(t),a="ArrowFunctionExpression"===s.type&&")"!==this.input.slice(this.lastTokStart,this.lastTokEnd);if(this.checkExpressionErrors(t)||a)return s;var r=this.parseSubscripts(s,e,i);return t&&"MemberExpression"===r.type&&(t.parenthesizedAssign>=r.start&&(t.parenthesizedAssign=-1),t.parenthesizedBind>=r.start&&(t.parenthesizedBind=-1)),r},Z.parseSubscripts=function(t,e,i,s){for(var a=8<=this.options.ecmaVersion&&"Identifier"===t.type&&"async"===t.name&&this.lastTokEnd===t.end&&!this.canInsertSemicolon()&&"async"===this.input.slice(t.start,t.end);;){var r=this.parseSubscript(t,e,i,s,a);if(r===t||"ArrowFunctionExpression"===r.type)return r;t=r}},Z.parseSubscript=function(t,e,i,s,a){var r=this.eat(_.bracketL);if(r||this.eat(_.dot)){var n=this.startNodeAt(e,i);n.object=t,n.property=r?this.parseExpression():this.parseIdent("never"!==this.options.allowReserved),n.computed=!!r,r&&this.expect(_.bracketR),t=this.finishNode(n,"MemberExpression")}else if(!s&&this.eat(_.parenL)){var o=new G,h=this.yieldPos,p=this.awaitPos,c=this.awaitIdentPos;this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0;var u=this.parseExprList(_.parenR,8<=this.options.ecmaVersion,!1,o);if(a&&!this.canInsertSemicolon()&&this.eat(_.arrow))return this.checkPatternErrors(o,!1),this.checkYieldAwaitInDefaultParams(),0<this.awaitIdentPos&&this.raise(this.awaitIdentPos,"Cannot use 'await' as identifier inside an async function"),this.yieldPos=h,this.awaitPos=p,this.awaitIdentPos=c,this.parseArrowExpression(this.startNodeAt(e,i),u,!0);this.checkExpressionErrors(o,!0),this.yieldPos=h||this.yieldPos,this.awaitPos=p||this.awaitPos,this.awaitIdentPos=c||this.awaitIdentPos;var l=this.startNodeAt(e,i);l.callee=t,l.arguments=u,t=this.finishNode(l,"CallExpression")}else if(this.type===_.backQuote){var d=this.startNodeAt(e,i);d.tag=t,d.quasi=this.parseTemplate({isTagged:!0}),t=this.finishNode(d,"TaggedTemplateExpression")}return t},Z.parseExprAtom=function(t){this.type===_.slash&&this.readRegexp();var e,i=this.potentialArrowAt===this.start;switch(this.type){case _._super:return this.allowSuper||this.raise(this.start,"'super' keyword outside a method"),e=this.startNode(),this.next(),this.type!==_.parenL||this.allowDirectSuper||this.raise(e.start,"super() call outside constructor of a subclass"),this.type!==_.dot&&this.type!==_.bracketL&&this.type!==_.parenL&&this.unexpected(),this.finishNode(e,"Super");case _._this:return e=this.startNode(),this.next(),this.finishNode(e,"ThisExpression");case _.name:var s=this.start,a=this.startLoc,r=this.containsEsc,n=this.parseIdent(!1);if(8<=this.options.ecmaVersion&&!r&&"async"===n.name&&!this.canInsertSemicolon()&&this.eat(_._function))return this.parseFunction(this.startNodeAt(s,a),0,!1,!0);if(i&&!this.canInsertSemicolon()){if(this.eat(_.arrow))return this.parseArrowExpression(this.startNodeAt(s,a),[n],!1);if(8<=this.options.ecmaVersion&&"async"===n.name&&this.type===_.name&&!r)return n=this.parseIdent(!1),!this.canInsertSemicolon()&&this.eat(_.arrow)||this.unexpected(),this.parseArrowExpression(this.startNodeAt(s,a),[n],!0)}return n;case _.regexp:var o=this.value;return(e=this.parseLiteral(o.value)).regex={pattern:o.pattern,flags:o.flags},e;case _.num:case _.string:return this.parseLiteral(this.value);case _._null:case _._true:case _._false:return(e=this.startNode()).value=this.type===_._null?null:this.type===_._true,e.raw=this.type.keyword,this.next(),this.finishNode(e,"Literal");case _.parenL:var h=this.start,p=this.parseParenAndDistinguishExpression(i);return t&&(t.parenthesizedAssign<0&&!this.isSimpleAssignTarget(p)&&(t.parenthesizedAssign=h),t.parenthesizedBind<0&&(t.parenthesizedBind=h)),p;case _.bracketL:return e=this.startNode(),this.next(),e.elements=this.parseExprList(_.bracketR,!0,!0,t),this.finishNode(e,"ArrayExpression");case _.braceL:return this.parseObj(!1,t);case _._function:return e=this.startNode(),this.next(),this.parseFunction(e,0);case _._class:return this.parseClass(this.startNode(),!1);case _._new:return this.parseNew();case _.backQuote:return this.parseTemplate();case _._import:return 11<=this.options.ecmaVersion?this.parseExprImport():this.unexpected();default:this.unexpected()}},Z.parseExprImport=function(){var t=this.startNode();switch(this.next(),this.type){case _.parenL:return this.parseDynamicImport(t);default:this.unexpected()}},Z.parseDynamicImport=function(t){if(this.next(),t.source=this.parseMaybeAssign(),!this.eat(_.parenR)){var e=this.start;this.eat(_.comma)&&this.eat(_.parenR)?this.raiseRecoverable(e,"Trailing comma is not allowed in import()"):this.unexpected(e)}return this.finishNode(t,"ImportExpression")},Z.parseLiteral=function(t){var e=this.startNode();return e.value=t,e.raw=this.input.slice(this.start,this.end),110===e.raw.charCodeAt(e.raw.length-1)&&(e.bigint=e.raw.slice(0,-1)),this.next(),this.finishNode(e,"Literal")},Z.parseParenExpression=function(){this.expect(_.parenL);var t=this.parseExpression();return this.expect(_.parenR),t},Z.parseParenAndDistinguishExpression=function(t){var e,i=this.start,s=this.startLoc,a=8<=this.options.ecmaVersion;if(6<=this.options.ecmaVersion){this.next();var r,n=this.start,o=this.startLoc,h=[],p=!0,c=!1,u=new G,l=this.yieldPos,d=this.awaitPos;for(this.yieldPos=0,this.awaitPos=0;this.type!==_.parenR;){if(p?p=!1:this.expect(_.comma),a&&this.afterTrailingComma(_.parenR,!0)){c=!0;break}if(this.type===_.ellipsis){r=this.start,h.push(this.parseParenItem(this.parseRestBinding())),this.type===_.comma&&this.raise(this.start,"Comma is not permitted after the rest element");break}h.push(this.parseMaybeAssign(!1,u,this.parseParenItem))}var f=this.start,m=this.startLoc;if(this.expect(_.parenR),t&&!this.canInsertSemicolon()&&this.eat(_.arrow))return this.checkPatternErrors(u,!1),this.checkYieldAwaitInDefaultParams(),this.yieldPos=l,this.awaitPos=d,this.parseParenArrowList(i,s,h);h.length&&!c||this.unexpected(this.lastTokStart),r&&this.unexpected(r),this.checkExpressionErrors(u,!0),this.yieldPos=l||this.yieldPos,this.awaitPos=d||this.awaitPos,1<h.length?((e=this.startNodeAt(n,o)).expressions=h,this.finishNodeAt(e,"SequenceExpression",f,m)):e=h[0]}else e=this.parseParenExpression();if(this.options.preserveParens){var g=this.startNodeAt(i,s);return g.expression=e,this.finishNode(g,"ParenthesizedExpression")}return e},Z.parseParenItem=function(t){return t},Z.parseParenArrowList=function(t,e,i){return this.parseArrowExpression(this.startNodeAt(t,e),i)};var Y=[];Z.parseNew=function(){var t=this.startNode(),e=this.parseIdent(!0);if(6<=this.options.ecmaVersion&&this.eat(_.dot)){t.meta=e;var i=this.containsEsc;return t.property=this.parseIdent(!0),"target"===t.property.name&&!i||this.raiseRecoverable(t.property.start,"The only valid meta property for new is new.target"),this.inNonArrowFunction()||this.raiseRecoverable(t.start,"new.target can only be used in functions"),this.finishNode(t,"MetaProperty")}var s=this.start,a=this.startLoc,r=this.type===_._import;return t.callee=this.parseSubscripts(this.parseExprAtom(),s,a,!0),r&&"ImportExpression"===t.callee.type&&this.raise(s,"Cannot use new with import()"),this.eat(_.parenL)?t.arguments=this.parseExprList(_.parenR,8<=this.options.ecmaVersion,!1):t.arguments=Y,this.finishNode(t,"NewExpression")},Z.parseTemplateElement=function(t){var e=t.isTagged,i=this.startNode();return this.type===_.invalidTemplate?(e||this.raiseRecoverable(this.start,"Bad escape sequence in untagged template literal"),i.value={raw:this.value,cooked:null}):i.value={raw:this.input.slice(this.start,this.end).replace(/\r\n?/g,"\n"),cooked:this.value},this.next(),i.tail=this.type===_.backQuote,this.finishNode(i,"TemplateElement")},Z.parseTemplate=function(t){void 0===t&&(t={});var e=t.isTagged;void 0===e&&(e=!1);var i=this.startNode();this.next(),i.expressions=[];var s=this.parseTemplateElement({isTagged:e});for(i.quasis=[s];!s.tail;)this.type===_.eof&&this.raise(this.pos,"Unterminated template literal"),this.expect(_.dollarBraceL),i.expressions.push(this.parseExpression()),this.expect(_.braceR),i.quasis.push(s=this.parseTemplateElement({isTagged:e}));return this.next(),this.finishNode(i,"TemplateLiteral")},Z.isAsyncProp=function(t){return!t.computed&&"Identifier"===t.key.type&&"async"===t.key.name&&(this.type===_.name||this.type===_.num||this.type===_.string||this.type===_.bracketL||this.type.keyword||9<=this.options.ecmaVersion&&this.type===_.star)&&!b.test(this.input.slice(this.lastTokEnd,this.start))},Z.parseObj=function(t,e){var i=this.startNode(),s=!0,a={};for(i.properties=[],this.next();!this.eat(_.braceR);){if(s)s=!1;else if(this.expect(_.comma),this.afterTrailingComma(_.braceR))break;var r=this.parseProperty(t,e);t||this.checkPropClash(r,a,e),i.properties.push(r)}return this.finishNode(i,t?"ObjectPattern":"ObjectExpression")},Z.parseProperty=function(t,e){var i,s,a,r,n=this.startNode();if(9<=this.options.ecmaVersion&&this.eat(_.ellipsis))return t?(n.argument=this.parseIdent(!1),this.type===_.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.finishNode(n,"RestElement")):(this.type===_.parenL&&e&&(e.parenthesizedAssign<0&&(e.parenthesizedAssign=this.start),e.parenthesizedBind<0&&(e.parenthesizedBind=this.start)),n.argument=this.parseMaybeAssign(!1,e),this.type===_.comma&&e&&e.trailingComma<0&&(e.trailingComma=this.start),this.finishNode(n,"SpreadElement"));6<=this.options.ecmaVersion&&(n.method=!1,n.shorthand=!1,(t||e)&&(a=this.start,r=this.startLoc),t||(i=this.eat(_.star)));var o=this.containsEsc;return this.parsePropertyName(n),!t&&!o&&8<=this.options.ecmaVersion&&!i&&this.isAsyncProp(n)?(s=!0,i=9<=this.options.ecmaVersion&&this.eat(_.star),this.parsePropertyName(n,e)):s=!1,this.parsePropertyValue(n,t,i,s,a,r,e,o),this.finishNode(n,"Property")},Z.parsePropertyValue=function(t,e,i,s,a,r,n,o){if((i||s)&&this.type===_.colon&&this.unexpected(),this.eat(_.colon))t.value=e?this.parseMaybeDefault(this.start,this.startLoc):this.parseMaybeAssign(!1,n),t.kind="init";else if(6<=this.options.ecmaVersion&&this.type===_.parenL)e&&this.unexpected(),t.kind="init",t.method=!0,t.value=this.parseMethod(i,s);else if(e||o||!(5<=this.options.ecmaVersion)||t.computed||"Identifier"!==t.key.type||"get"!==t.key.name&&"set"!==t.key.name||this.type===_.comma||this.type===_.braceR)6<=this.options.ecmaVersion&&!t.computed&&"Identifier"===t.key.type?((i||s)&&this.unexpected(),this.checkUnreserved(t.key),"await"!==t.key.name||this.awaitIdentPos||(this.awaitIdentPos=a),t.kind="init",e?t.value=this.parseMaybeDefault(a,r,t.key):this.type===_.eq&&n?(n.shorthandAssign<0&&(n.shorthandAssign=this.start),t.value=this.parseMaybeDefault(a,r,t.key)):t.value=t.key,t.shorthand=!0):this.unexpected();else{(i||s)&&this.unexpected(),t.kind=t.key.name,this.parsePropertyName(t),t.value=this.parseMethod(!1);var h="get"===t.kind?0:1;if(t.value.params.length!==h){var p=t.value.start;"get"===t.kind?this.raiseRecoverable(p,"getter should have no params"):this.raiseRecoverable(p,"setter should have 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Medefaidrin Medf Old_Sogdian Sogo Sogdian Sogd Elymaic Elym Nandinagari Nand Nyiakeng_Puachue_Hmong Hmnp Wancho Wcho"},ft={};function mt(t){var e=ft[t]={binary:L(pt[t]+" "+ct),nonBinary:{General_Category:L(ct),Script:L(dt[t])}};e.nonBinary.Script_Extensions=e.nonBinary.Script,e.nonBinary.gc=e.nonBinary.General_Category,e.nonBinary.sc=e.nonBinary.Script,e.nonBinary.scx=e.nonBinary.Script_Extensions}mt(9),mt(10),mt(11);function gt(t){this.parser=t,this.validFlags="gim"+(6<=t.options.ecmaVersion?"uy":"")+(9<=t.options.ecmaVersion?"s":""),this.unicodeProperties=ft[11<=t.options.ecmaVersion?11:t.options.ecmaVersion],this.source="",this.flags="",this.start=0,this.switchU=!1,this.switchN=!1,this.pos=0,this.lastIntValue=0,this.lastStringValue="",this.lastAssertionIsQuantifiable=!1,this.numCapturingParens=0,this.maxBackReference=0,this.groupNames=[],this.backReferenceNames=[]}var xt=O.prototype;function yt(t){return t<=65535?String.fromCharCode(t):(t-=65536,String.fromCharCode(55296+(t>>10),56320+(1023&t)))}function vt(t){return 36===t||40<=t&&t<=43||46===t||63===t||91<=t&&t<=94||123<=t&&t<=125}function _t(t){return 65<=t&&t<=90||97<=t&&t<=122}function bt(t){return _t(t)||95===t}function kt(t){return 48<=t&&t<=57}function St(t){return 48<=t&&t<=57||65<=t&&t<=70||97<=t&&t<=102}function Ct(t){return 65<=t&&t<=70?t-65+10:97<=t&&t<=102?t-97+10:t-48}function wt(t){return 48<=t&&t<=55}gt.prototype.reset=function(t,e,i){var s=-1!==i.indexOf("u");this.start=0|t,this.source=e+"",this.flags=i,this.switchU=s&&6<=this.parser.options.ecmaVersion,this.switchN=s&&9<=this.parser.options.ecmaVersion},gt.prototype.raise=function(t){this.parser.raiseRecoverable(this.start,"Invalid regular expression: /"+this.source+"/: "+t)},gt.prototype.at=function(t){var e=this.source,i=e.length;if(i<=t)return-1;var s=e.charCodeAt(t);return!this.switchU||s<=55295||57344<=s||i<=t+1?s:(s<<10)+e.charCodeAt(t+1)-56613888},gt.prototype.nextIndex=function(t){var e=this.source,i=e.length;if(i<=t)return i;var s=e.charCodeAt(t);return!this.switchU||s<=55295||57344<=s||i<=t+1?t+1:t+2},gt.prototype.current=function(){return this.at(this.pos)},gt.prototype.lookahead=function(){return this.at(this.nextIndex(this.pos))},gt.prototype.advance=function(){this.pos=this.nextIndex(this.pos)},gt.prototype.eat=function(t){return this.current()===t&&(this.advance(),!0)},xt.validateRegExpFlags=function(t){for(var e=t.validFlags,i=t.flags,s=0;s<i.length;s++){var a=i.charAt(s);-1===e.indexOf(a)&&this.raise(t.start,"Invalid regular expression flag"),-1<i.indexOf(a,s+1)&&this.raise(t.start,"Duplicate regular expression flag")}},xt.validateRegExpPattern=function(t){this.regexp_pattern(t),!t.switchN&&9<=this.options.ecmaVersion&&0<t.groupNames.length&&(t.switchN=!0,this.regexp_pattern(t))},xt.regexp_pattern=function(t){t.pos=0,t.lastIntValue=0,t.lastStringValue="",t.lastAssertionIsQuantifiable=!1,t.numCapturingParens=0,t.maxBackReference=0,t.groupNames.length=0,t.backReferenceNames.length=0,this.regexp_disjunction(t),t.pos!==t.source.length&&(t.eat(41)&&t.raise("Unmatched ')'"),(t.eat(93)||t.eat(125))&&t.raise("Lone quantifier brackets")),t.maxBackReference>t.numCapturingParens&&t.raise("Invalid escape");for(var e=0,i=t.backReferenceNames;e<i.length;e+=1){var s=i[e];-1===t.groupNames.indexOf(s)&&t.raise("Invalid named capture referenced")}},xt.regexp_disjunction=function(t){for(this.regexp_alternative(t);t.eat(124);)this.regexp_alternative(t);this.regexp_eatQuantifier(t,!0)&&t.raise("Nothing to repeat"),t.eat(123)&&t.raise("Lone quantifier brackets")},xt.regexp_alternative=function(t){for(;t.pos<t.source.length&&this.regexp_eatTerm(t););},xt.regexp_eatTerm=function(t){return this.regexp_eatAssertion(t)?(t.lastAssertionIsQuantifiable&&this.regexp_eatQuantifier(t)&&t.switchU&&t.raise("Invalid quantifier"),!0):!(t.switchU?!this.regexp_eatAtom(t):!this.regexp_eatExtendedAtom(t))&&(this.regexp_eatQuantifier(t),!0)},xt.regexp_eatAssertion=function(t){var e=t.pos;if(t.lastAssertionIsQuantifiable=!1,t.eat(94)||t.eat(36))return!0;if(t.eat(92)){if(t.eat(66)||t.eat(98))return!0;t.pos=e}if(t.eat(40)&&t.eat(63)){var i=!1;if(9<=this.options.ecmaVersion&&(i=t.eat(60)),t.eat(61)||t.eat(33))return this.regexp_disjunction(t),t.eat(41)||t.raise("Unterminated group"),t.lastAssertionIsQuantifiable=!i,!0}return t.pos=e,!1},xt.regexp_eatQuantifier=function(t,e){return void 0===e&&(e=!1),!!this.regexp_eatQuantifierPrefix(t,e)&&(t.eat(63),!0)},xt.regexp_eatQuantifierPrefix=function(t,e){return t.eat(42)||t.eat(43)||t.eat(63)||this.regexp_eatBracedQuantifier(t,e)},xt.regexp_eatBracedQuantifier=function(t,e){var i=t.pos;if(t.eat(123)){var s=0,a=-1;if(this.regexp_eatDecimalDigits(t)&&(s=t.lastIntValue,t.eat(44)&&this.regexp_eatDecimalDigits(t)&&(a=t.lastIntValue),t.eat(125)))return-1!==a&&a<s&&!e&&t.raise("numbers out of order in {} quantifier"),!0;t.switchU&&!e&&t.raise("Incomplete quantifier"),t.pos=i}return!1},xt.regexp_eatAtom=function(t){return this.regexp_eatPatternCharacters(t)||t.eat(46)||this.regexp_eatReverseSolidusAtomEscape(t)||this.regexp_eatCharacterClass(t)||this.regexp_eatUncapturingGroup(t)||this.regexp_eatCapturingGroup(t)},xt.regexp_eatReverseSolidusAtomEscape=function(t){var e=t.pos;if(t.eat(92)){if(this.regexp_eatAtomEscape(t))return!0;t.pos=e}return!1},xt.regexp_eatUncapturingGroup=function(t){var e=t.pos;if(t.eat(40)){if(t.eat(63)&&t.eat(58)){if(this.regexp_disjunction(t),t.eat(41))return!0;t.raise("Unterminated group")}t.pos=e}return!1},xt.regexp_eatCapturingGroup=function(t){if(t.eat(40)){if(9<=this.options.ecmaVersion?this.regexp_groupSpecifier(t):63===t.current()&&t.raise("Invalid group"),this.regexp_disjunction(t),t.eat(41))return t.numCapturingParens+=1,!0;t.raise("Unterminated group")}return!1},xt.regexp_eatExtendedAtom=function(t){return t.eat(46)||this.regexp_eatReverseSolidusAtomEscape(t)||this.regexp_eatCharacterClass(t)||this.regexp_eatUncapturingGroup(t)||this.regexp_eatCapturingGroup(t)||this.regexp_eatInvalidBracedQuantifier(t)||this.regexp_eatExtendedPatternCharacter(t)},xt.regexp_eatInvalidBracedQuantifier=function(t){return this.regexp_eatBracedQuantifier(t,!0)&&t.raise("Nothing to repeat"),!1},xt.regexp_eatSyntaxCharacter=function(t){var e=t.current();return!!vt(e)&&(t.lastIntValue=e,t.advance(),!0)},xt.regexp_eatPatternCharacters=function(t){for(var e=t.pos,i=0;-1!==(i=t.current())&&!vt(i);)t.advance();return t.pos!==e},xt.regexp_eatExtendedPatternCharacter=function(t){var e=t.current();return!(-1===e||36===e||40<=e&&e<=43||46===e||63===e||91===e||94===e||124===e)&&(t.advance(),!0)},xt.regexp_groupSpecifier=function(t){if(t.eat(63)){if(this.regexp_eatGroupName(t))return-1!==t.groupNames.indexOf(t.lastStringValue)&&t.raise("Duplicate capture group name"),void t.groupNames.push(t.lastStringValue);t.raise("Invalid group")}},xt.regexp_eatGroupName=function(t){if(t.lastStringValue="",t.eat(60)){if(this.regexp_eatRegExpIdentifierName(t)&&t.eat(62))return!0;t.raise("Invalid capture group name")}return!1},xt.regexp_eatRegExpIdentifierName=function(t){if(t.lastStringValue="",this.regexp_eatRegExpIdentifierStart(t)){for(t.lastStringValue+=yt(t.lastIntValue);this.regexp_eatRegExpIdentifierPart(t);)t.lastStringValue+=yt(t.lastIntValue);return!0}return!1},xt.regexp_eatRegExpIdentifierStart=function(t){var e=t.pos,i=t.current();return t.advance(),92===i&&this.regexp_eatRegExpUnicodeEscapeSequence(t)&&(i=t.lastIntValue),function(t){return l(t,!0)||36===t||95===t}(i)?(t.lastIntValue=i,!0):(t.pos=e,!1)},xt.regexp_eatRegExpIdentifierPart=function(t){var e=t.pos,i=t.current();return t.advance(),92===i&&this.regexp_eatRegExpUnicodeEscapeSequence(t)&&(i=t.lastIntValue),function(t){return d(t,!0)||36===t||95===t||8204===t||8205===t}(i)?(t.lastIntValue=i,!0):(t.pos=e,!1)},xt.regexp_eatAtomEscape=function(t){return!!(this.regexp_eatBackReference(t)||this.regexp_eatCharacterClassEscape(t)||this.regexp_eatCharacterEscape(t)||t.switchN&&this.regexp_eatKGroupName(t))||(t.switchU&&(99===t.current()&&t.raise("Invalid unicode escape"),t.raise("Invalid escape")),!1)},xt.regexp_eatBackReference=function(t){var e=t.pos;if(this.regexp_eatDecimalEscape(t)){var i=t.lastIntValue;if(t.switchU)return i>t.maxBackReference&&(t.maxBackReference=i),!0;if(i<=t.numCapturingParens)return!0;t.pos=e}return!1},xt.regexp_eatKGroupName=function(t){if(t.eat(107)){if(this.regexp_eatGroupName(t))return t.backReferenceNames.push(t.lastStringValue),!0;t.raise("Invalid named reference")}return!1},xt.regexp_eatCharacterEscape=function(t){return this.regexp_eatControlEscape(t)||this.regexp_eatCControlLetter(t)||this.regexp_eatZero(t)||this.regexp_eatHexEscapeSequence(t)||this.regexp_eatRegExpUnicodeEscapeSequence(t)||!t.switchU&&this.regexp_eatLegacyOctalEscapeSequence(t)||this.regexp_eatIdentityEscape(t)},xt.regexp_eatCControlLetter=function(t){var e=t.pos;if(t.eat(99)){if(this.regexp_eatControlLetter(t))return!0;t.pos=e}return!1},xt.regexp_eatZero=function(t){return 48===t.current()&&!kt(t.lookahead())&&(t.lastIntValue=0,t.advance(),!0)},xt.regexp_eatControlEscape=function(t){var e=t.current();return 116===e?(t.lastIntValue=9,t.advance(),!0):110===e?(t.lastIntValue=10,t.advance(),!0):118===e?(t.lastIntValue=11,t.advance(),!0):102===e?(t.lastIntValue=12,t.advance(),!0):114===e&&(t.lastIntValue=13,t.advance(),!0)},xt.regexp_eatControlLetter=function(t){var e=t.current();return!!_t(e)&&(t.lastIntValue=e%32,t.advance(),!0)},xt.regexp_eatRegExpUnicodeEscapeSequence=function(t){var e=t.pos;if(t.eat(117)){if(this.regexp_eatFixedHexDigits(t,4)){var i=t.lastIntValue;if(t.switchU&&55296<=i&&i<=56319){var s=t.pos;if(t.eat(92)&&t.eat(117)&&this.regexp_eatFixedHexDigits(t,4)){var a=t.lastIntValue;if(56320<=a&&a<=57343)return t.lastIntValue=1024*(i-55296)+(a-56320)+65536,!0}t.pos=s,t.lastIntValue=i}return!0}if(t.switchU&&t.eat(123)&&this.regexp_eatHexDigits(t)&&t.eat(125)&&function(t){return 0<=t&&t<=1114111}(t.lastIntValue))return!0;t.switchU&&t.raise("Invalid unicode escape"),t.pos=e}return!1},xt.regexp_eatIdentityEscape=function(t){if(t.switchU)return!!this.regexp_eatSyntaxCharacter(t)||!!t.eat(47)&&(t.lastIntValue=47,!0);var e=t.current();return!(99===e||t.switchN&&107===e)&&(t.lastIntValue=e,t.advance(),!0)},xt.regexp_eatDecimalEscape=function(t){t.lastIntValue=0;var e=t.current();if(49<=e&&e<=57){for(;t.lastIntValue=10*t.lastIntValue+(e-48),t.advance(),48<=(e=t.current())&&e<=57;);return!0}return!1},xt.regexp_eatCharacterClassEscape=function(t){var e=t.current();if(function(t){return 100===t||68===t||115===t||83===t||119===t||87===t}(e))return t.lastIntValue=-1,t.advance(),!0;if(t.switchU&&9<=this.options.ecmaVersion&&(80===e||112===e)){if(t.lastIntValue=-1,t.advance(),t.eat(123)&&this.regexp_eatUnicodePropertyValueExpression(t)&&t.eat(125))return!0;t.raise("Invalid property name")}return!1},xt.regexp_eatUnicodePropertyValueExpression=function(t){var e=t.pos;if(this.regexp_eatUnicodePropertyName(t)&&t.eat(61)){var i=t.lastStringValue;if(this.regexp_eatUnicodePropertyValue(t)){var s=t.lastStringValue;return this.regexp_validateUnicodePropertyNameAndValue(t,i,s),!0}}if(t.pos=e,this.regexp_eatLoneUnicodePropertyNameOrValue(t)){var a=t.lastStringValue;return this.regexp_validateUnicodePropertyNameOrValue(t,a),!0}return!1},xt.regexp_validateUnicodePropertyNameAndValue=function(t,e,i){P(t.unicodeProperties.nonBinary,e)||t.raise("Invalid property name"),t.unicodeProperties.nonBinary[e].test(i)||t.raise("Invalid property value")},xt.regexp_validateUnicodePropertyNameOrValue=function(t,e){t.unicodeProperties.binary.test(e)||t.raise("Invalid property name")},xt.regexp_eatUnicodePropertyName=function(t){var e=0;for(t.lastStringValue="";bt(e=t.current());)t.lastStringValue+=yt(e),t.advance();return""!==t.lastStringValue},xt.regexp_eatUnicodePropertyValue=function(t){var e,i=0;for(t.lastStringValue="";bt(e=i=t.current())||kt(e);)t.lastStringValue+=yt(i),t.advance();return""!==t.lastStringValue},xt.regexp_eatLoneUnicodePropertyNameOrValue=function(t){return this.regexp_eatUnicodePropertyValue(t)},xt.regexp_eatCharacterClass=function(t){if(t.eat(91)){if(t.eat(94),this.regexp_classRanges(t),t.eat(93))return!0;t.raise("Unterminated character class")}return!1},xt.regexp_classRanges=function(t){for(;this.regexp_eatClassAtom(t);){var e=t.lastIntValue;if(t.eat(45)&&this.regexp_eatClassAtom(t)){var i=t.lastIntValue;!t.switchU||-1!==e&&-1!==i||t.raise("Invalid character class"),-1!==e&&-1!==i&&i<e&&t.raise("Range out of order in character class")}}},xt.regexp_eatClassAtom=function(t){var e=t.pos;if(t.eat(92)){if(this.regexp_eatClassEscape(t))return!0;if(t.switchU){var i=t.current();99!==i&&!wt(i)||t.raise("Invalid class escape"),t.raise("Invalid escape")}t.pos=e}var s=t.current();return 93!==s&&(t.lastIntValue=s,t.advance(),!0)},xt.regexp_eatClassEscape=function(t){var e=t.pos;if(t.eat(98))return t.lastIntValue=8,!0;if(t.switchU&&t.eat(45))return t.lastIntValue=45,!0;if(!t.switchU&&t.eat(99)){if(this.regexp_eatClassControlLetter(t))return!0;t.pos=e}return this.regexp_eatCharacterClassEscape(t)||this.regexp_eatCharacterEscape(t)},xt.regexp_eatClassControlLetter=function(t){var e=t.current();return!(!kt(e)&&95!==e)&&(t.lastIntValue=e%32,t.advance(),!0)},xt.regexp_eatHexEscapeSequence=function(t){var e=t.pos;if(t.eat(120)){if(this.regexp_eatFixedHexDigits(t,2))return!0;t.switchU&&t.raise("Invalid escape"),t.pos=e}return!1},xt.regexp_eatDecimalDigits=function(t){var e=t.pos,i=0;for(t.lastIntValue=0;kt(i=t.current());)t.lastIntValue=10*t.lastIntValue+(i-48),t.advance();return t.pos!==e},xt.regexp_eatHexDigits=function(t){var e=t.pos,i=0;for(t.lastIntValue=0;St(i=t.current());)t.lastIntValue=16*t.lastIntValue+Ct(i),t.advance();return t.pos!==e},xt.regexp_eatLegacyOctalEscapeSequence=function(t){if(this.regexp_eatOctalDigit(t)){var e=t.lastIntValue;if(this.regexp_eatOctalDigit(t)){var i=t.lastIntValue;e<=3&&this.regexp_eatOctalDigit(t)?t.lastIntValue=64*e+8*i+t.lastIntValue:t.lastIntValue=8*e+i}else t.lastIntValue=e;return!0}return!1},xt.regexp_eatOctalDigit=function(t){var e=t.current();return wt(e)?(t.lastIntValue=e-48,t.advance(),!0):(t.lastIntValue=0,!1)},xt.regexp_eatFixedHexDigits=function(t,e){for(var i=t.pos,s=t.lastIntValue=0;s<e;++s){var a=t.current();if(!St(a))return t.pos=i,!1;t.lastIntValue=16*t.lastIntValue+Ct(a),t.advance()}return!0};function Et(t){this.type=t.type,this.value=t.value,this.start=t.start,this.end=t.end,t.options.locations&&(this.loc=new V(t,t.startLoc,t.endLoc)),t.options.ranges&&(this.range=[t.start,t.end])}var At=O.prototype;function It(t){return t<=65535?String.fromCharCode(t):(t-=65536,String.fromCharCode(55296+(t>>10),56320+(1023&t)))}At.next=function(){this.options.onToken&&this.options.onToken(new Et(this)),this.lastTokEnd=this.end,this.lastTokStart=this.start,this.lastTokEndLoc=this.endLoc,this.lastTokStartLoc=this.startLoc,this.nextToken()},At.getToken=function(){return this.next(),new Et(this)},"undefined"!=typeof Symbol&&(At[Symbol.iterator]=function(){var e=this;return{next:function(){var t=e.getToken();return{done:t.type===_.eof,value:t}}}}),At.curContext=function(){return this.context[this.context.length-1]},At.nextToken=function(){var t=this.curContext();return t&&t.preserveSpace||this.skipSpace(),this.start=this.pos,this.options.locations&&(this.startLoc=this.curPosition()),this.pos>=this.input.length?this.finishToken(_.eof):t.override?t.override(this):void this.readToken(this.fullCharCodeAtPos())},At.readToken=function(t){return l(t,6<=this.options.ecmaVersion)||92===t?this.readWord():this.getTokenFromCode(t)},At.fullCharCodeAtPos=function(){var t=this.input.charCodeAt(this.pos);return t<=55295||57344<=t?t:(t<<10)+this.input.charCodeAt(this.pos+1)-56613888},At.skipBlockComment=function(){var t,e=this.options.onComment&&this.curPosition(),i=this.pos,s=this.input.indexOf("*/",this.pos+=2);if(-1===s&&this.raise(this.pos-2,"Unterminated comment"),this.pos=s+2,this.options.locations)for(k.lastIndex=i;(t=k.exec(this.input))&&t.index<this.pos;)++this.curLine,this.lineStart=t.index+t[0].length;this.options.onComment&&this.options.onComment(!0,this.input.slice(i+2,s),i,this.pos,e,this.curPosition())},At.skipLineComment=function(t){for(var e=this.pos,i=this.options.onComment&&this.curPosition(),s=this.input.charCodeAt(this.pos+=t);this.pos<this.input.length&&!S(s);)s=this.input.charCodeAt(++this.pos);this.options.onComment&&this.options.onComment(!1,this.input.slice(e+t,this.pos),e,this.pos,i,this.curPosition())},At.skipSpace=function(){t:for(;this.pos<this.input.length;){var t=this.input.charCodeAt(this.pos);switch(t){case 32:case 160:++this.pos;break;case 13:10===this.input.charCodeAt(this.pos+1)&&++this.pos;case 10:case 8232:case 8233:++this.pos,this.options.locations&&(++this.curLine,this.lineStart=this.pos);break;case 47:switch(this.input.charCodeAt(this.pos+1)){case 42:this.skipBlockComment();break;case 47:this.skipLineComment(2);break;default:break t}break;default:if(!(8<t&&t<14||5760<=t&&C.test(String.fromCharCode(t))))break t;++this.pos}}},At.finishToken=function(t,e){this.end=this.pos,this.options.locations&&(this.endLoc=this.curPosition());var i=this.type;this.type=t,this.value=e,this.updateContext(i)},At.readToken_dot=function(){var t=this.input.charCodeAt(this.pos+1);if(48<=t&&t<=57)return this.readNumber(!0);var e=this.input.charCodeAt(this.pos+2);return 6<=this.options.ecmaVersion&&46===t&&46===e?(this.pos+=3,this.finishToken(_.ellipsis)):(++this.pos,this.finishToken(_.dot))},At.readToken_slash=function(){var t=this.input.charCodeAt(this.pos+1);return this.exprAllowed?(++this.pos,this.readRegexp()):61===t?this.finishOp(_.assign,2):this.finishOp(_.slash,1)},At.readToken_mult_modulo_exp=function(t){var e=this.input.charCodeAt(this.pos+1),i=1,s=42===t?_.star:_.modulo;return 7<=this.options.ecmaVersion&&42===t&&42===e&&(++i,s=_.starstar,e=this.input.charCodeAt(this.pos+2)),61===e?this.finishOp(_.assign,i+1):this.finishOp(s,i)},At.readToken_pipe_amp=function(t){var e=this.input.charCodeAt(this.pos+1);return e===t?this.finishOp(124===t?_.logicalOR:_.logicalAND,2):61===e?this.finishOp(_.assign,2):this.finishOp(124===t?_.bitwiseOR:_.bitwiseAND,1)},At.readToken_caret=function(){return 61===this.input.charCodeAt(this.pos+1)?this.finishOp(_.assign,2):this.finishOp(_.bitwiseXOR,1)},At.readToken_plus_min=function(t){var e=this.input.charCodeAt(this.pos+1);return e===t?45!==e||this.inModule||62!==this.input.charCodeAt(this.pos+2)||0!==this.lastTokEnd&&!b.test(this.input.slice(this.lastTokEnd,this.pos))?this.finishOp(_.incDec,2):(this.skipLineComment(3),this.skipSpace(),this.nextToken()):61===e?this.finishOp(_.assign,2):this.finishOp(_.plusMin,1)},At.readToken_lt_gt=function(t){var e=this.input.charCodeAt(this.pos+1),i=1;return e===t?(i=62===t&&62===this.input.charCodeAt(this.pos+2)?3:2,61===this.input.charCodeAt(this.pos+i)?this.finishOp(_.assign,i+1):this.finishOp(_.bitShift,i)):33!==e||60!==t||this.inModule||45!==this.input.charCodeAt(this.pos+2)||45!==this.input.charCodeAt(this.pos+3)?(61===e&&(i=2),this.finishOp(_.relational,i)):(this.skipLineComment(4),this.skipSpace(),this.nextToken())},At.readToken_eq_excl=function(t){var e=this.input.charCodeAt(this.pos+1);return 61===e?this.finishOp(_.equality,61===this.input.charCodeAt(this.pos+2)?3:2):61===t&&62===e&&6<=this.options.ecmaVersion?(this.pos+=2,this.finishToken(_.arrow)):this.finishOp(61===t?_.eq:_.prefix,1)},At.getTokenFromCode=function(t){switch(t){case 46:return this.readToken_dot();case 40:return++this.pos,this.finishToken(_.parenL);case 41:return++this.pos,this.finishToken(_.parenR);case 59:return++this.pos,this.finishToken(_.semi);case 44:return++this.pos,this.finishToken(_.comma);case 91:return++this.pos,this.finishToken(_.bracketL);case 93:return++this.pos,this.finishToken(_.bracketR);case 123:return++this.pos,this.finishToken(_.braceL);case 125:return++this.pos,this.finishToken(_.braceR);case 58:return++this.pos,this.finishToken(_.colon);case 63:return++this.pos,this.finishToken(_.question);case 96:if(this.options.ecmaVersion<6)break;return++this.pos,this.finishToken(_.backQuote);case 48:var e=this.input.charCodeAt(this.pos+1);if(120===e||88===e)return this.readRadixNumber(16);if(6<=this.options.ecmaVersion){if(111===e||79===e)return this.readRadixNumber(8);if(98===e||66===e)return this.readRadixNumber(2)}case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:return this.readNumber(!1);case 34:case 39:return this.readString(t);case 47:return this.readToken_slash();case 37:case 42:return this.readToken_mult_modulo_exp(t);case 124:case 38:return this.readToken_pipe_amp(t);case 94:return this.readToken_caret();case 43:case 45:return this.readToken_plus_min(t);case 60:case 62:return this.readToken_lt_gt(t);case 61:case 33:return this.readToken_eq_excl(t);case 126:return this.finishOp(_.prefix,1)}this.raise(this.pos,"Unexpected character '"+It(t)+"'")},At.finishOp=function(t,e){var i=this.input.slice(this.pos,this.pos+e);return this.pos+=e,this.finishToken(t,i)},At.readRegexp=function(){for(var t,e,i=this.pos;;){this.pos>=this.input.length&&this.raise(i,"Unterminated regular expression");var s=this.input.charAt(this.pos);if(b.test(s)&&this.raise(i,"Unterminated regular expression"),t)t=!1;else{if("["===s)e=!0;else if("]"===s&&e)e=!1;else if("/"===s&&!e)break;t="\\"===s}++this.pos}var a=this.input.slice(i,this.pos);++this.pos;var r=this.pos,n=this.readWord1();this.containsEsc&&this.unexpected(r);var o=this.regexpState||(this.regexpState=new gt(this));o.reset(i,a,n),this.validateRegExpFlags(o),this.validateRegExpPattern(o);var h=null;try{h=new RegExp(a,n)}catch(t){}return this.finishToken(_.regexp,{pattern:a,flags:n,value:h})},At.readInt=function(t,e){for(var i=this.pos,s=0,a=0,r=null==e?1/0:e;a<r;++a){var n=this.input.charCodeAt(this.pos),o=void 0;if(t<=(o=97<=n?n-97+10:65<=n?n-65+10:48<=n&&n<=57?n-48:1/0))break;++this.pos,s=s*t+o}return this.pos===i||null!=e&&this.pos-i!==e?null:s},At.readRadixNumber=function(t){var e=this.pos;this.pos+=2;var i=this.readInt(t);return null==i&&this.raise(this.start+2,"Expected number in radix "+t),11<=this.options.ecmaVersion&&110===this.input.charCodeAt(this.pos)?(i="undefined"!=typeof BigInt?BigInt(this.input.slice(e,this.pos)):null,++this.pos):l(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number"),this.finishToken(_.num,i)},At.readNumber=function(t){var e=this.pos;t||null!==this.readInt(10)||this.raise(e,"Invalid number");var i=2<=this.pos-e&&48===this.input.charCodeAt(e);i&&this.strict&&this.raise(e,"Invalid number"),i&&/[89]/.test(this.input.slice(e,this.pos))&&(i=!1);var s=this.input.charCodeAt(this.pos);if(!i&&!t&&11<=this.options.ecmaVersion&&110===s){var a=this.input.slice(e,this.pos),r="undefined"!=typeof BigInt?BigInt(a):null;return++this.pos,l(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number"),this.finishToken(_.num,r)}46!==s||i||(++this.pos,this.readInt(10),s=this.input.charCodeAt(this.pos)),69!==s&&101!==s||i||(43!==(s=this.input.charCodeAt(++this.pos))&&45!==s||++this.pos,null===this.readInt(10)&&this.raise(e,"Invalid number")),l(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number");var n=this.input.slice(e,this.pos),o=i?parseInt(n,8):parseFloat(n);return this.finishToken(_.num,o)},At.readCodePoint=function(){var t;if(123===this.input.charCodeAt(this.pos)){this.options.ecmaVersion<6&&this.unexpected();var e=++this.pos;t=this.readHexChar(this.input.indexOf("}",this.pos)-this.pos),++this.pos,1114111<t&&this.invalidStringToken(e,"Code point out of bounds")}else t=this.readHexChar(4);return t},At.readString=function(t){for(var e="",i=++this.pos;;){this.pos>=this.input.length&&this.raise(this.start,"Unterminated string constant");var s=this.input.charCodeAt(this.pos);if(s===t)break;92===s?(e+=this.input.slice(i,this.pos),e+=this.readEscapedChar(!1),i=this.pos):(S(s,10<=this.options.ecmaVersion)&&this.raise(this.start,"Unterminated string constant"),++this.pos)}return e+=this.input.slice(i,this.pos++),this.finishToken(_.string,e)};var Pt={};At.tryReadTemplateToken=function(){this.inTemplateElement=!0;try{this.readTmplToken()}catch(t){if(t!==Pt)throw t;this.readInvalidTemplateToken()}this.inTemplateElement=!1},At.invalidStringToken=function(t,e){if(this.inTemplateElement&&9<=this.options.ecmaVersion)throw Pt;this.raise(t,e)},At.readTmplToken=function(){for(var t="",e=this.pos;;){this.pos>=this.input.length&&this.raise(this.start,"Unterminated template");var i=this.input.charCodeAt(this.pos);if(96===i||36===i&&123===this.input.charCodeAt(this.pos+1))return this.pos!==this.start||this.type!==_.template&&this.type!==_.invalidTemplate?(t+=this.input.slice(e,this.pos),this.finishToken(_.template,t)):36===i?(this.pos+=2,this.finishToken(_.dollarBraceL)):(++this.pos,this.finishToken(_.backQuote));if(92===i)t+=this.input.slice(e,this.pos),t+=this.readEscapedChar(!0),e=this.pos;else if(S(i)){switch(t+=this.input.slice(e,this.pos),++this.pos,i){case 13:10===this.input.charCodeAt(this.pos)&&++this.pos;case 10:t+="\n";break;default:t+=String.fromCharCode(i)}this.options.locations&&(++this.curLine,this.lineStart=this.pos),e=this.pos}else++this.pos}},At.readInvalidTemplateToken=function(){for(;this.pos<this.input.length;this.pos++)switch(this.input[this.pos]){case"\\":++this.pos;break;case"$":if("{"!==this.input[this.pos+1])break;case"`":return this.finishToken(_.invalidTemplate,this.input.slice(this.start,this.pos))}this.raise(this.start,"Unterminated template")},At.readEscapedChar=function(t){var e=this.input.charCodeAt(++this.pos);switch(++this.pos,e){case 110:return"\n";case 114:return"\r";case 120:return String.fromCharCode(this.readHexChar(2));case 117:return It(this.readCodePoint());case 116:return"\t";case 98:return"\b";case 118:return"\v";case 102:return"\f";case 13:10===this.input.charCodeAt(this.pos)&&++this.pos;case 10:return this.options.locations&&(this.lineStart=this.pos,++this.curLine),"";default:if(48<=e&&e<=55){var i=this.input.substr(this.pos-1,3).match(/^[0-7]+/)[0],s=parseInt(i,8);return 255<s&&(i=i.slice(0,-1),s=parseInt(i,8)),this.pos+=i.length-1,e=this.input.charCodeAt(this.pos),"0"===i&&56!==e&&57!==e||!this.strict&&!t||this.invalidStringToken(this.pos-1-i.length,t?"Octal literal in template string":"Octal literal in strict mode"),String.fromCharCode(s)}return S(e)?"":String.fromCharCode(e)}},At.readHexChar=function(t){var e=this.pos,i=this.readInt(16,t);return null===i&&this.invalidStringToken(e,"Bad character escape sequence"),i},At.readWord1=function(){for(var t="",e=!(this.containsEsc=!1),i=this.pos,s=6<=this.options.ecmaVersion;this.pos<this.input.length;){var a=this.fullCharCodeAtPos();if(d(a,s))this.pos+=a<=65535?1:2;else{if(92!==a)break;this.containsEsc=!0,t+=this.input.slice(i,this.pos);var r=this.pos;117!==this.input.charCodeAt(++this.pos)&&this.invalidStringToken(this.pos,"Expecting Unicode escape sequence \\uXXXX"),++this.pos;var n=this.readCodePoint();(e?l:d)(n,s)||this.invalidStringToken(r,"Invalid Unicode escape"),t+=It(n),i=this.pos}e=!1}return t+this.input.slice(i,this.pos)},At.readWord=function(){var t=this.readWord1(),e=_.name;return this.keywords.test(t)&&(this.containsEsc&&this.raiseRecoverable(this.start,"Escape sequence in keyword "+t),e=y[t]),this.finishToken(e,t)};t.Node=et,t.Parser=O,t.Position=N,t.SourceLocation=V,t.TokContext=at,t.Token=Et,t.TokenType=f,t.defaultOptions=M,t.getLineInfo=R,t.isIdentifierChar=d,t.isIdentifierStart=l,t.isNewLine=S,t.keywordTypes=y,t.lineBreak=b,t.lineBreakG=k,t.nonASCIIwhitespace=C,t.parse=function(t,e){return O.parse(t,e)},t.parseExpressionAt=function(t,e,i){return O.parseExpressionAt(t,e,i)},t.tokContexts=rt,t.tokTypes=_,t.tokenizer=function(t,e){return O.tokenizer(t,e)},t.version="7.0.0",Object.defineProperty(t,"__esModule",{value:!0})});
|
||
/*acorn-loose.min.js*/
|
||
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("acorn")):"function"==typeof define&&define.amd?define(["exports","acorn"],e):e(((t=t||self).acorn=t.acorn||{},t.acorn.loose={}),t.acorn)}(this,function(t,l){"use strict";function i(){}function s(t,e){var s;void 0===e&&(e={}),this.toks=this.constructor.BaseParser.tokenizer(t,e),this.options=this.toks.options,this.input=this.toks.input,this.tok=this.last={type:l.tokTypes.eof,start:0,end:0},this.tok.validateRegExpFlags=i,this.tok.validateRegExpPattern=i,this.options.locations&&(s=this.toks.curPosition(),this.tok.loc=new l.SourceLocation(this.toks,s,s)),this.ahead=[],this.context=[],this.curIndent=0,this.curLineStart=0,this.nextLineStart=this.lineEnd(this.curLineStart)+1,this.inAsync=!1,this.inFunction=!1}s.prototype.startNode=function(){return new l.Node(this.toks,this.tok.start,this.options.locations?this.tok.loc.start:null)},s.prototype.storeCurrentPos=function(){return this.options.locations?[this.tok.start,this.tok.loc.start]:this.tok.start},s.prototype.startNodeAt=function(t){return this.options.locations?new l.Node(this.toks,t[0],t[1]):new l.Node(this.toks,t)},s.prototype.finishNode=function(t,e){return t.type=e,t.end=this.last.end,this.options.locations&&(t.loc.end=this.last.loc.end),this.options.ranges&&(t.range[1]=this.last.end),t},s.prototype.dummyNode=function(t){var e=this.startNode();return e.type=t,e.end=e.start,this.options.locations&&(e.loc.end=e.loc.start),this.options.ranges&&(e.range[1]=e.start),this.last={type:l.tokTypes.name,start:e.start,end:e.start,loc:e.loc},e},s.prototype.dummyIdent=function(){var t=this.dummyNode("Identifier");return t.name="✖",t},s.prototype.dummyString=function(){var t=this.dummyNode("Literal");return t.value=t.raw="✖",t},s.prototype.eat=function(t){return this.tok.type===t&&(this.next(),!0)},s.prototype.isContextual=function(t){return this.tok.type===l.tokTypes.name&&this.tok.value===t},s.prototype.eatContextual=function(t){return this.tok.value===t&&this.eat(l.tokTypes.name)},s.prototype.canInsertSemicolon=function(){return this.tok.type===l.tokTypes.eof||this.tok.type===l.tokTypes.braceR||l.lineBreak.test(this.input.slice(this.last.end,this.tok.start))},s.prototype.semicolon=function(){return this.eat(l.tokTypes.semi)},s.prototype.expect=function(t){if(this.eat(t))return!0;for(var e=1;e<=2;e++)if(this.lookAhead(e).type===t){for(var s=0;s<e;s++)this.next();return!0}},s.prototype.pushCx=function(){this.context.push(this.curIndent)},s.prototype.popCx=function(){this.curIndent=this.context.pop()},s.prototype.lineEnd=function(t){for(;t<this.input.length&&!l.isNewLine(this.input.charCodeAt(t));)++t;return t},s.prototype.indentationAfter=function(t){for(var e=0;;++t){var s=this.input.charCodeAt(t);if(32===s)++e;else{if(9!==s)return e;e+=this.options.tabSize}}},s.prototype.closes=function(t,e,s,i){return this.tok.type===t||this.tok.type===l.tokTypes.eof||s!==this.curLineStart&&this.curIndent<e&&this.tokenStartsLine()&&(!i||this.nextLineStart>=this.input.length||this.indentationAfter(this.nextLineStart)<e)},s.prototype.tokenStartsLine=function(){for(var t=this.tok.start-1;t>=this.curLineStart;--t){var e=this.input.charCodeAt(t);if(9!==e&&32!==e)return!1}return!0},s.prototype.extend=function(t,e){this[t]=e(this[t])},s.prototype.parse=function(){return this.next(),this.parseTopLevel()},s.extend=function(){for(var t=[],e=arguments.length;e--;)t[e]=arguments[e];for(var s=this,i=0;i<t.length;i++)s=t[i](s);return s},s.parse=function(t,e){return new this(t,e).parse()},s.BaseParser=l.Parser;var e=s.prototype;function k(t){return"✖"===t.name}e.next=function(){if(this.last=this.tok,this.ahead.length?this.tok=this.ahead.shift():this.tok=this.readToken(),this.tok.start>=this.nextLineStart){for(;this.tok.start>=this.nextLineStart;)this.curLineStart=this.nextLineStart,this.nextLineStart=this.lineEnd(this.curLineStart)+1;this.curIndent=this.indentationAfter(this.curLineStart)}},e.readToken=function(){for(;;)try{return this.toks.next(),this.toks.type===l.tokTypes.dot&&"."===this.input.substr(this.toks.end,1)&&6<=this.options.ecmaVersion&&(this.toks.end++,this.toks.type=l.tokTypes.ellipsis),new l.Token(this.toks)}catch(t){if(!(t instanceof SyntaxError))throw t;var e=t.message,s=t.raisedAt,i=!0;if(/unterminated/i.test(e))if(s=this.lineEnd(t.pos+1),/string/.test(e))i={start:t.pos,end:s,type:l.tokTypes.string,value:this.input.slice(t.pos+1,s)};else if(/regular expr/i.test(e)){var r=this.input.slice(t.pos,s);try{r=new RegExp(r)}catch(t){}i={start:t.pos,end:s,type:l.tokTypes.regexp,value:r}}else i=!!/template/.test(e)&&{start:t.pos,end:s,type:l.tokTypes.template,value:this.input.slice(t.pos,s)};else if(/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(e))for(;s<this.input.length&&!((n=this.input.charCodeAt(s))<14&&8<n||32===n||160===n||l.isNewLine(n));)++s;else if(/character escape|expected hexadecimal/i.test(e))for(;s<this.input.length;){var o=this.input.charCodeAt(s++);if(34===o||39===o||l.isNewLine(o))break}else if(/unexpected character/i.test(e))s++,i=!1;else{if(!/regular expression/i.test(e))throw t;i=!0}if(this.resetTo(s),!0===i&&(i={start:s,end:s,type:l.tokTypes.name,value:"✖"}),i)return this.options.locations&&(i.loc=new l.SourceLocation(this.toks,l.getLineInfo(this.input,i.start),l.getLineInfo(this.input,i.end))),i}var n},e.resetTo=function(t){this.toks.pos=t;var e,s=this.input.charAt(t-1);if(this.toks.exprAllowed=!s||/[[{(,;:?/*=+\-~!|&%^<>]/.test(s)||/[enwfd]/.test(s)&&/\b(case|else|return|throw|new|in|(instance|type)?of|delete|void)$/.test(this.input.slice(t-10,t)),this.options.locations)for(this.toks.curLine=1,this.toks.lineStart=l.lineBreakG.lastIndex=0;(e=l.lineBreakG.exec(this.input))&&e.index<t;)++this.toks.curLine,this.toks.lineStart=e.index+e[0].length},e.lookAhead=function(t){for(;t>this.ahead.length;)this.ahead.push(this.readToken());return this.ahead[t-1]};var r=s.prototype;r.parseTopLevel=function(){var t=this.startNodeAt(this.options.locations?[0,l.getLineInfo(this.input,0)]:0);for(t.body=[];this.tok.type!==l.tokTypes.eof;)t.body.push(this.parseStatement());return this.toks.adaptDirectivePrologue(t.body),this.last=this.tok,t.sourceType=this.options.sourceType,this.finishNode(t,"Program")},r.parseStatement=function(){var t,e,s=this.tok.type,i=this.startNode();switch(this.toks.isLet()&&(s=l.tokTypes._var,t="let"),s){case l.tokTypes._break:case l.tokTypes._continue:this.next();var r=s===l.tokTypes._break;return this.semicolon()||this.canInsertSemicolon()?i.label=null:(i.label=this.tok.type===l.tokTypes.name?this.parseIdent():null,this.semicolon()),this.finishNode(i,r?"BreakStatement":"ContinueStatement");case l.tokTypes._debugger:return this.next(),this.semicolon(),this.finishNode(i,"DebuggerStatement");case l.tokTypes._do:return this.next(),i.body=this.parseStatement(),i.test=this.eat(l.tokTypes._while)?this.parseParenExpression():this.dummyIdent(),this.semicolon(),this.finishNode(i,"DoWhileStatement");case l.tokTypes._for:this.next();var o=9<=this.options.ecmaVersion&&this.inAsync&&this.eatContextual("await");if(this.pushCx(),this.expect(l.tokTypes.parenL),this.tok.type===l.tokTypes.semi)return this.parseFor(i,null);var n=this.toks.isLet();if(n||this.tok.type===l.tokTypes._var||this.tok.type===l.tokTypes._const){var a=this.parseVar(this.startNode(),!0,n?"let":this.tok.value);return 1!==a.declarations.length||this.tok.type!==l.tokTypes._in&&!this.isContextual("of")?this.parseFor(i,a):(9<=this.options.ecmaVersion&&this.tok.type!==l.tokTypes._in&&(i.await=o),this.parseForIn(i,a))}var h=this.parseExpression(!0);return this.tok.type===l.tokTypes._in||this.isContextual("of")?(9<=this.options.ecmaVersion&&this.tok.type!==l.tokTypes._in&&(i.await=o),this.parseForIn(i,this.toAssignable(h))):this.parseFor(i,h);case l.tokTypes._function:return this.next(),this.parseFunction(i,!0);case l.tokTypes._if:return this.next(),i.test=this.parseParenExpression(),i.consequent=this.parseStatement(),i.alternate=this.eat(l.tokTypes._else)?this.parseStatement():null,this.finishNode(i,"IfStatement");case l.tokTypes._return:return this.next(),this.eat(l.tokTypes.semi)||this.canInsertSemicolon()?i.argument=null:(i.argument=this.parseExpression(),this.semicolon()),this.finishNode(i,"ReturnStatement");case l.tokTypes._switch:var p,c,u=this.curIndent,y=this.curLineStart;for(this.next(),i.discriminant=this.parseParenExpression(),i.cases=[],this.pushCx(),this.expect(l.tokTypes.braceL);!this.closes(l.tokTypes.braceR,u,y,!0);){this.tok.type===l.tokTypes._case||this.tok.type===l.tokTypes._default?(c=this.tok.type===l.tokTypes._case,p&&this.finishNode(p,"SwitchCase"),i.cases.push(p=this.startNode()),p.consequent=[],this.next(),p.test=c?this.parseExpression():null,this.expect(l.tokTypes.colon)):(p||(i.cases.push(p=this.startNode()),p.consequent=[],p.test=null),p.consequent.push(this.parseStatement()))}return p&&this.finishNode(p,"SwitchCase"),this.popCx(),this.eat(l.tokTypes.braceR),this.finishNode(i,"SwitchStatement");case l.tokTypes._throw:return this.next(),i.argument=this.parseExpression(),this.semicolon(),this.finishNode(i,"ThrowStatement");case l.tokTypes._try:return this.next(),i.block=this.parseBlock(),i.handler=null,this.tok.type===l.tokTypes._catch&&(e=this.startNode(),this.next(),this.eat(l.tokTypes.parenL)?(e.param=this.toAssignable(this.parseExprAtom(),!0),this.expect(l.tokTypes.parenR)):e.param=null,e.body=this.parseBlock(),i.handler=this.finishNode(e,"CatchClause")),i.finalizer=this.eat(l.tokTypes._finally)?this.parseBlock():null,i.handler||i.finalizer?this.finishNode(i,"TryStatement"):i.block;case l.tokTypes._var:case l.tokTypes._const:return this.parseVar(i,!1,t||this.tok.value);case l.tokTypes._while:return this.next(),i.test=this.parseParenExpression(),i.body=this.parseStatement(),this.finishNode(i,"WhileStatement");case l.tokTypes._with:return this.next(),i.object=this.parseParenExpression(),i.body=this.parseStatement(),this.finishNode(i,"WithStatement");case l.tokTypes.braceL:return this.parseBlock();case l.tokTypes.semi:return this.next(),this.finishNode(i,"EmptyStatement");case l.tokTypes._class:return this.parseClass(!0);case l.tokTypes._import:return 10<this.options.ecmaVersion&&this.lookAhead(1).type===l.tokTypes.parenL?(i.expression=this.parseExpression(),this.semicolon(),this.finishNode(i,"ExpressionStatement")):this.parseImport();case l.tokTypes._export:return this.parseExport();default:if(this.toks.isAsyncFunction())return this.next(),this.next(),this.parseFunction(i,!0,!0);var d=this.parseExpression();return k(d)?(this.next(),this.tok.type===l.tokTypes.eof?this.finishNode(i,"EmptyStatement"):this.parseStatement()):s===l.tokTypes.name&&"Identifier"===d.type&&this.eat(l.tokTypes.colon)?(i.body=this.parseStatement(),i.label=d,this.finishNode(i,"LabeledStatement")):(i.expression=d,this.semicolon(),this.finishNode(i,"ExpressionStatement"))}},r.parseBlock=function(){var t=this.startNode();this.pushCx(),this.expect(l.tokTypes.braceL);var e=this.curIndent,s=this.curLineStart;for(t.body=[];!this.closes(l.tokTypes.braceR,e,s,!0);)t.body.push(this.parseStatement());return this.popCx(),this.eat(l.tokTypes.braceR),this.finishNode(t,"BlockStatement")},r.parseFor=function(t,e){return t.init=e,t.test=t.update=null,this.eat(l.tokTypes.semi)&&this.tok.type!==l.tokTypes.semi&&(t.test=this.parseExpression()),this.eat(l.tokTypes.semi)&&this.tok.type!==l.tokTypes.parenR&&(t.update=this.parseExpression()),this.popCx(),this.expect(l.tokTypes.parenR),t.body=this.parseStatement(),this.finishNode(t,"ForStatement")},r.parseForIn=function(t,e){var s=this.tok.type===l.tokTypes._in?"ForInStatement":"ForOfStatement";return this.next(),t.left=e,t.right=this.parseExpression(),this.popCx(),this.expect(l.tokTypes.parenR),t.body=this.parseStatement(),this.finishNode(t,s)},r.parseVar=function(t,e,s){t.kind=s,this.next(),t.declarations=[];do{var i=this.startNode();i.id=6<=this.options.ecmaVersion?this.toAssignable(this.parseExprAtom(),!0):this.parseIdent(),i.init=this.eat(l.tokTypes.eq)?this.parseMaybeAssign(e):null,t.declarations.push(this.finishNode(i,"VariableDeclarator"))}while(this.eat(l.tokTypes.comma));var r;return t.declarations.length||((r=this.startNode()).id=this.dummyIdent(),t.declarations.push(this.finishNode(r,"VariableDeclarator"))),e||this.semicolon(),this.finishNode(t,"VariableDeclaration")},r.parseClass=function(t){var e=this.startNode();this.next(),this.tok.type===l.tokTypes.name?e.id=this.parseIdent():e.id=!0===t?this.dummyIdent():null,e.superClass=this.eat(l.tokTypes._extends)?this.parseExpression():null,e.body=this.startNode(),e.body.body=[],this.pushCx();var s,i,r,o=this.curIndent+1,n=this.curLineStart;for(this.eat(l.tokTypes.braceL),this.curIndent+1<o&&(o=this.curIndent,n=this.curLineStart);!this.closes(l.tokTypes.braceR,o,n);){this.semicolon()||(s=this.startNode(),r=i=void 0,6<=this.options.ecmaVersion&&(s.static=!1,i=this.eat(l.tokTypes.star)),this.parsePropertyName(s),k(s.key)?(k(this.parseMaybeAssign())&&this.next(),this.eat(l.tokTypes.comma)):("Identifier"!==s.key.type||s.computed||"static"!==s.key.name||this.tok.type===l.tokTypes.parenL||this.tok.type===l.tokTypes.braceL?s.static=!1:(s.static=!0,i=this.eat(l.tokTypes.star),this.parsePropertyName(s)),s.computed||"Identifier"!==s.key.type||"async"!==s.key.name||this.tok.type===l.tokTypes.parenL||this.canInsertSemicolon()?r=!1:(r=!0,i=9<=this.options.ecmaVersion&&this.eat(l.tokTypes.star),this.parsePropertyName(s)),5<=this.options.ecmaVersion&&"Identifier"===s.key.type&&!s.computed&&("get"===s.key.name||"set"===s.key.name)&&this.tok.type!==l.tokTypes.parenL&&this.tok.type!==l.tokTypes.braceL?(s.kind=s.key.name,this.parsePropertyName(s),s.value=this.parseMethod(!1)):(s.computed||s.static||i||r||!("Identifier"===s.key.type&&"constructor"===s.key.name||"Literal"===s.key.type&&"constructor"===s.key.value)?s.kind="method":s.kind="constructor",s.value=this.parseMethod(i,r)),e.body.body.push(this.finishNode(s,"MethodDefinition"))))}return this.popCx(),this.eat(l.tokTypes.braceR)||(this.last.end=this.tok.start,this.options.locations&&(this.last.loc.end=this.tok.loc.start)),this.semicolon(),this.finishNode(e.body,"ClassBody"),this.finishNode(e,t?"ClassDeclaration":"ClassExpression")},r.parseFunction=function(t,e,s){var i=this.inAsync,r=this.inFunction;return this.initFunction(t),6<=this.options.ecmaVersion&&(t.generator=this.eat(l.tokTypes.star)),8<=this.options.ecmaVersion&&(t.async=!!s),this.tok.type===l.tokTypes.name?t.id=this.parseIdent():!0===e&&(t.id=this.dummyIdent()),this.inAsync=t.async,this.inFunction=!0,t.params=this.parseFunctionParams(),t.body=this.parseBlock(),this.toks.adaptDirectivePrologue(t.body.body),this.inAsync=i,this.inFunction=r,this.finishNode(t,e?"FunctionDeclaration":"FunctionExpression")},r.parseExport=function(){var t,e,s=this.startNode();return this.next(),this.eat(l.tokTypes.star)?(s.source=this.eatContextual("from")?this.parseExprAtom():this.dummyString(),this.finishNode(s,"ExportAllDeclaration")):this.eat(l.tokTypes._default)?(this.tok.type===l.tokTypes._function||(t=this.toks.isAsyncFunction())?(e=this.startNode(),this.next(),t&&this.next(),s.declaration=this.parseFunction(e,"nullableID",t)):this.tok.type===l.tokTypes._class?s.declaration=this.parseClass("nullableID"):(s.declaration=this.parseMaybeAssign(),this.semicolon()),this.finishNode(s,"ExportDefaultDeclaration")):(this.tok.type.keyword||this.toks.isLet()||this.toks.isAsyncFunction()?(s.declaration=this.parseStatement(),s.specifiers=[],s.source=null):(s.declaration=null,s.specifiers=this.parseExportSpecifierList(),s.source=this.eatContextual("from")?this.parseExprAtom():null,this.semicolon()),this.finishNode(s,"ExportNamedDeclaration"))},r.parseImport=function(){var t,e=this.startNode();return this.next(),this.tok.type===l.tokTypes.string?(e.specifiers=[],e.source=this.parseExprAtom()):(this.tok.type===l.tokTypes.name&&"from"!==this.tok.value&&((t=this.startNode()).local=this.parseIdent(),this.finishNode(t,"ImportDefaultSpecifier"),this.eat(l.tokTypes.comma)),e.specifiers=this.parseImportSpecifiers(),e.source=this.eatContextual("from")&&this.tok.type===l.tokTypes.string?this.parseExprAtom():this.dummyString(),t&&e.specifiers.unshift(t)),this.semicolon(),this.finishNode(e,"ImportDeclaration")},r.parseImportSpecifiers=function(){var t=[];if(this.tok.type===l.tokTypes.star){var e=this.startNode();this.next(),e.local=this.eatContextual("as")?this.parseIdent():this.dummyIdent(),t.push(this.finishNode(e,"ImportNamespaceSpecifier"))}else{var s=this.curIndent,i=this.curLineStart,r=this.nextLineStart;for(this.pushCx(),this.eat(l.tokTypes.braceL),this.curLineStart>r&&(r=this.curLineStart);!this.closes(l.tokTypes.braceR,s+(this.curLineStart<=r?1:0),i);){var o=this.startNode();if(this.eat(l.tokTypes.star))o.local=this.eatContextual("as")?this.parseIdent():this.dummyIdent(),this.finishNode(o,"ImportNamespaceSpecifier");else{if(this.isContextual("from"))break;if(o.imported=this.parseIdent(),k(o.imported))break;o.local=this.eatContextual("as")?this.parseIdent():o.imported,this.finishNode(o,"ImportSpecifier")}t.push(o),this.eat(l.tokTypes.comma)}this.eat(l.tokTypes.braceR),this.popCx()}return t},r.parseExportSpecifierList=function(){var t=[],e=this.curIndent,s=this.curLineStart,i=this.nextLineStart;for(this.pushCx(),this.eat(l.tokTypes.braceL),this.curLineStart>i&&(i=this.curLineStart);!this.closes(l.tokTypes.braceR,e+(this.curLineStart<=i?1:0),s)&&!this.isContextual("from");){var r=this.startNode();if(r.local=this.parseIdent(),k(r.local))break;r.exported=this.eatContextual("as")?this.parseIdent():r.local,this.finishNode(r,"ExportSpecifier"),t.push(r),this.eat(l.tokTypes.comma)}return this.eat(l.tokTypes.braceR),this.popCx(),t};var o=s.prototype;o.checkLVal=function(t){if(!t)return t;switch(t.type){case"Identifier":case"MemberExpression":return t;case"ParenthesizedExpression":return t.expression=this.checkLVal(t.expression),t;default:return this.dummyIdent()}},o.parseExpression=function(t){var e=this.storeCurrentPos(),s=this.parseMaybeAssign(t);if(this.tok.type!==l.tokTypes.comma)return s;var i=this.startNodeAt(e);for(i.expressions=[s];this.eat(l.tokTypes.comma);)i.expressions.push(this.parseMaybeAssign(t));return this.finishNode(i,"SequenceExpression")},o.parseParenExpression=function(){this.pushCx(),this.expect(l.tokTypes.parenL);var t=this.parseExpression();return this.popCx(),this.expect(l.tokTypes.parenR),t},o.parseMaybeAssign=function(t){if(this.toks.isContextual("yield")){var e=this.startNode();return this.next(),this.semicolon()||this.canInsertSemicolon()||this.tok.type!==l.tokTypes.star&&!this.tok.type.startsExpr?(e.delegate=!1,e.argument=null):(e.delegate=this.eat(l.tokTypes.star),e.argument=this.parseMaybeAssign()),this.finishNode(e,"YieldExpression")}var s=this.storeCurrentPos(),i=this.parseMaybeConditional(t);if(this.tok.type.isAssign){var r=this.startNodeAt(s);return r.operator=this.tok.value,r.left=this.tok.type===l.tokTypes.eq?this.toAssignable(i):this.checkLVal(i),this.next(),r.right=this.parseMaybeAssign(t),this.finishNode(r,"AssignmentExpression")}return i},o.parseMaybeConditional=function(t){var e=this.storeCurrentPos(),s=this.parseExprOps(t);if(this.eat(l.tokTypes.question)){var i=this.startNodeAt(e);return i.test=s,i.consequent=this.parseMaybeAssign(),i.alternate=this.expect(l.tokTypes.colon)?this.parseMaybeAssign(t):this.dummyIdent(),this.finishNode(i,"ConditionalExpression")}return s},o.parseExprOps=function(t){var e=this.storeCurrentPos(),s=this.curIndent,i=this.curLineStart;return this.parseExprOp(this.parseMaybeUnary(!1),e,-1,t,s,i)},o.parseExprOp=function(t,e,s,i,r,o){if(this.curLineStart!==o&&this.curIndent<r&&this.tokenStartsLine())return t;var n=this.tok.type.binop;if(null==n||i&&this.tok.type===l.tokTypes._in||!(s<n))return t;var a,h=this.startNodeAt(e);return h.left=t,h.operator=this.tok.value,this.next(),this.curLineStart!==o&&this.curIndent<r&&this.tokenStartsLine()?h.right=this.dummyIdent():(a=this.storeCurrentPos(),h.right=this.parseExprOp(this.parseMaybeUnary(!1),a,n,i,r,o)),this.finishNode(h,/&&|\|\|/.test(h.operator)?"LogicalExpression":"BinaryExpression"),this.parseExprOp(h,e,s,i,r,o)},o.parseMaybeUnary=function(t){var e,s=this.storeCurrentPos();if(8<=this.options.ecmaVersion&&this.toks.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))e=this.parseAwait(),t=!0;else if(this.tok.type.prefix){var i=this.startNode(),r=this.tok.type===l.tokTypes.incDec;r||(t=!0),i.operator=this.tok.value,i.prefix=!0,this.next(),i.argument=this.parseMaybeUnary(!0),r&&(i.argument=this.checkLVal(i.argument)),e=this.finishNode(i,r?"UpdateExpression":"UnaryExpression")}else if(this.tok.type===l.tokTypes.ellipsis){var o=this.startNode();this.next(),o.argument=this.parseMaybeUnary(t),e=this.finishNode(o,"SpreadElement")}else for(e=this.parseExprSubscripts();this.tok.type.postfix&&!this.canInsertSemicolon();){var n=this.startNodeAt(s);n.operator=this.tok.value,n.prefix=!1,n.argument=this.checkLVal(e),this.next(),e=this.finishNode(n,"UpdateExpression")}if(t||!this.eat(l.tokTypes.starstar))return e;var a=this.startNodeAt(s);return a.operator="**",a.left=e,a.right=this.parseMaybeUnary(!1),this.finishNode(a,"BinaryExpression")},o.parseExprSubscripts=function(){var t=this.storeCurrentPos();return this.parseSubscripts(this.parseExprAtom(),t,!1,this.curIndent,this.curLineStart)},o.parseSubscripts=function(t,e,s,i,r){for(;;){if(this.curLineStart!==r&&this.curIndent<=i&&this.tokenStartsLine()){if(this.tok.type!==l.tokTypes.dot||this.curIndent!==i)return t;--i}var o="Identifier"===t.type&&"async"===t.name&&!this.canInsertSemicolon();if(this.eat(l.tokTypes.dot)){var n=this.startNodeAt(e);n.object=t,this.curLineStart!==r&&this.curIndent<=i&&this.tokenStartsLine()?n.property=this.dummyIdent():n.property=this.parsePropertyAccessor()||this.dummyIdent(),n.computed=!1,t=this.finishNode(n,"MemberExpression")}else if(this.tok.type===l.tokTypes.bracketL){this.pushCx(),this.next();var a=this.startNodeAt(e);a.object=t,a.property=this.parseExpression(),a.computed=!0,this.popCx(),this.expect(l.tokTypes.bracketR),t=this.finishNode(a,"MemberExpression")}else if(s||this.tok.type!==l.tokTypes.parenL){if(this.tok.type!==l.tokTypes.backQuote)return t;var h=this.startNodeAt(e);h.tag=t,h.quasi=this.parseTemplate(),t=this.finishNode(h,"TaggedTemplateExpression")}else{var p=this.parseExprList(l.tokTypes.parenR);if(o&&this.eat(l.tokTypes.arrow))return this.parseArrowExpression(this.startNodeAt(e),p,!0);var c=this.startNodeAt(e);c.callee=t,c.arguments=p,t=this.finishNode(c,"CallExpression")}}},o.parseExprAtom=function(){switch(this.tok.type){case l.tokTypes._this:case l.tokTypes._super:var t=this.tok.type===l.tokTypes._this?"ThisExpression":"Super",e=this.startNode();return this.next(),this.finishNode(e,t);case l.tokTypes.name:var s=this.storeCurrentPos(),i=this.parseIdent(),r=!1;if("async"===i.name&&!this.canInsertSemicolon()){if(this.eat(l.tokTypes._function))return this.parseFunction(this.startNodeAt(s),!1,!0);this.tok.type===l.tokTypes.name&&(i=this.parseIdent(),r=!0)}return this.eat(l.tokTypes.arrow)?this.parseArrowExpression(this.startNodeAt(s),[i],r):i;case l.tokTypes.regexp:e=this.startNode();var o=this.tok.value;return e.regex={pattern:o.pattern,flags:o.flags},e.value=o.value,e.raw=this.input.slice(this.tok.start,this.tok.end),this.next(),this.finishNode(e,"Literal");case l.tokTypes.num:case l.tokTypes.string:return(e=this.startNode()).value=this.tok.value,e.raw=this.input.slice(this.tok.start,this.tok.end),this.tok.type===l.tokTypes.num&&110===e.raw.charCodeAt(e.raw.length-1)&&(e.bigint=e.raw.slice(0,-1)),this.next(),this.finishNode(e,"Literal");case l.tokTypes._null:case l.tokTypes._true:case l.tokTypes._false:return(e=this.startNode()).value=this.tok.type===l.tokTypes._null?null:this.tok.type===l.tokTypes._true,e.raw=this.tok.type.keyword,this.next(),this.finishNode(e,"Literal");case l.tokTypes.parenL:var n=this.storeCurrentPos();this.next();var a,h=this.parseExpression();if(this.expect(l.tokTypes.parenR),this.eat(l.tokTypes.arrow)){var p=h.expressions||[h];return p.length&&k(p[p.length-1])&&p.pop(),this.parseArrowExpression(this.startNodeAt(n),p)}return this.options.preserveParens&&((a=this.startNodeAt(n)).expression=h,h=this.finishNode(a,"ParenthesizedExpression")),h;case l.tokTypes.bracketL:return(e=this.startNode()).elements=this.parseExprList(l.tokTypes.bracketR,!0),this.finishNode(e,"ArrayExpression");case l.tokTypes.braceL:return this.parseObj();case l.tokTypes._class:return this.parseClass(!1);case l.tokTypes._function:return e=this.startNode(),this.next(),this.parseFunction(e,!1);case l.tokTypes._new:return this.parseNew();case l.tokTypes.backQuote:return this.parseTemplate();case l.tokTypes._import:return 11<=this.options.ecmaVersion?this.parseExprImport():this.dummyIdent();default:return this.dummyIdent()}},o.parseExprImport=function(){var t=this.startNode();switch(this.next(),this.tok.type){case l.tokTypes.parenL:return this.parseDynamicImport(t);default:return t.name="import",this.finishNode(t,"Identifier")}},o.parseDynamicImport=function(t){return t.source=this.parseExprList(l.tokTypes.parenR)[0]||this.dummyString(),this.finishNode(t,"ImportExpression")},o.parseNew=function(){var t=this.startNode(),e=this.curIndent,s=this.curLineStart,i=this.parseIdent(!0);if(6<=this.options.ecmaVersion&&this.eat(l.tokTypes.dot))return t.meta=i,t.property=this.parseIdent(!0),this.finishNode(t,"MetaProperty");var r=this.storeCurrentPos();return t.callee=this.parseSubscripts(this.parseExprAtom(),r,!0,e,s),this.tok.type===l.tokTypes.parenL?t.arguments=this.parseExprList(l.tokTypes.parenR):t.arguments=[],this.finishNode(t,"NewExpression")},o.parseTemplateElement=function(){var t=this.startNode();return this.tok.type===l.tokTypes.invalidTemplate?t.value={raw:this.tok.value,cooked:null}:t.value={raw:this.input.slice(this.tok.start,this.tok.end).replace(/\r\n?/g,"\n"),cooked:this.tok.value},this.next(),t.tail=this.tok.type===l.tokTypes.backQuote,this.finishNode(t,"TemplateElement")},o.parseTemplate=function(){var t=this.startNode();this.next(),t.expressions=[];var e=this.parseTemplateElement();for(t.quasis=[e];!e.tail;)this.next(),t.expressions.push(this.parseExpression()),this.expect(l.tokTypes.braceR)?e=this.parseTemplateElement():((e=this.startNode()).value={cooked:"",raw:""},e.tail=!0,this.finishNode(e,"TemplateElement")),t.quasis.push(e);return this.expect(l.tokTypes.backQuote),this.finishNode(t,"TemplateLiteral")},o.parseObj=function(){var t=this.startNode();t.properties=[],this.pushCx();var e=this.curIndent+1,s=this.curLineStart;for(this.eat(l.tokTypes.braceL),this.curIndent+1<e&&(e=this.curIndent,s=this.curLineStart);!this.closes(l.tokTypes.braceR,e,s);){var i,r=this.startNode(),o=void 0,n=void 0,a=void 0;9<=this.options.ecmaVersion&&this.eat(l.tokTypes.ellipsis)?(r.argument=this.parseMaybeAssign(),t.properties.push(this.finishNode(r,"SpreadElement")),this.eat(l.tokTypes.comma)):(6<=this.options.ecmaVersion&&(a=this.storeCurrentPos(),r.method=!1,r.shorthand=!1,o=this.eat(l.tokTypes.star)),this.parsePropertyName(r),this.toks.isAsyncProp(r)?(n=!0,o=9<=this.options.ecmaVersion&&this.eat(l.tokTypes.star),this.parsePropertyName(r)):n=!1,k(r.key)?k(this.parseMaybeAssign())&&this.next():(this.eat(l.tokTypes.colon)?(r.kind="init",r.value=this.parseMaybeAssign()):6<=this.options.ecmaVersion&&(this.tok.type===l.tokTypes.parenL||this.tok.type===l.tokTypes.braceL)?(r.kind="init",r.method=!0,r.value=this.parseMethod(o,n)):5<=this.options.ecmaVersion&&"Identifier"===r.key.type&&!r.computed&&("get"===r.key.name||"set"===r.key.name)&&this.tok.type!==l.tokTypes.comma&&this.tok.type!==l.tokTypes.braceR&&this.tok.type!==l.tokTypes.eq?(r.kind=r.key.name,this.parsePropertyName(r),r.value=this.parseMethod(!1)):(r.kind="init",6<=this.options.ecmaVersion?this.eat(l.tokTypes.eq)?((i=this.startNodeAt(a)).operator="=",i.left=r.key,i.right=this.parseMaybeAssign(),r.value=this.finishNode(i,"AssignmentExpression")):r.value=r.key:r.value=this.dummyIdent(),r.shorthand=!0),t.properties.push(this.finishNode(r,"Property"))),this.eat(l.tokTypes.comma))}return this.popCx(),this.eat(l.tokTypes.braceR)||(this.last.end=this.tok.start,this.options.locations&&(this.last.loc.end=this.tok.loc.start)),this.finishNode(t,"ObjectExpression")},o.parsePropertyName=function(t){if(6<=this.options.ecmaVersion){if(this.eat(l.tokTypes.bracketL))return t.computed=!0,t.key=this.parseExpression(),void this.expect(l.tokTypes.bracketR);t.computed=!1}var e=this.tok.type===l.tokTypes.num||this.tok.type===l.tokTypes.string?this.parseExprAtom():this.parseIdent();t.key=e||this.dummyIdent()},o.parsePropertyAccessor=function(){if(this.tok.type===l.tokTypes.name||this.tok.type.keyword)return this.parseIdent()},o.parseIdent=function(){var t=this.tok.type===l.tokTypes.name?this.tok.value:this.tok.type.keyword;if(!t)return this.dummyIdent();var e=this.startNode();return this.next(),e.name=t,this.finishNode(e,"Identifier")},o.initFunction=function(t){t.id=null,t.params=[],6<=this.options.ecmaVersion&&(t.generator=!1,t.expression=!1),8<=this.options.ecmaVersion&&(t.async=!1)},o.toAssignable=function(t,e){if(t&&"Identifier"!==t.type&&("MemberExpression"!==t.type||e))if("ParenthesizedExpression"===t.type)this.toAssignable(t.expression,e);else{if(this.options.ecmaVersion<6)return this.dummyIdent();if("ObjectExpression"===t.type){t.type="ObjectPattern";for(var s=0,i=t.properties;s<i.length;s+=1){var r=i[s];this.toAssignable(r,e)}}else if("ArrayExpression"===t.type)t.type="ArrayPattern",this.toAssignableList(t.elements,e);else if("Property"===t.type)this.toAssignable(t.value,e);else if("SpreadElement"===t.type)t.type="RestElement",this.toAssignable(t.argument,e);else{if("AssignmentExpression"!==t.type)return this.dummyIdent();t.type="AssignmentPattern",delete t.operator}}return t},o.toAssignableList=function(t,e){for(var s=0,i=t;s<i.length;s+=1){var 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