@philpl/buble/dist/buble.es.js

The blazing fast, batteries-included ES2015 compiler

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this.options.onInsertedSemicolon&&this.options.onInsertedSemicolon(this.lastTokEnd,this.lastTokEndLoc),!0},q.semicolon=function(){this.eat(x.semi)||this.insertSemicolon()||this.unexpected()},q.afterTrailingComma=function(t,e){if(this.type===t)return this.options.onTrailingComma&&this.options.onTrailingComma(this.lastTokStart,this.lastTokStartLoc),e||this.next(),!0},q.expect=function(t){this.eat(t)||this.unexpected()},q.unexpected=function(t){this.raise(null!=t?t:this.start,"Unexpected token")},q.checkPatternErrors=function(t,e){if(t){t.trailingComma>-1&&this.raiseRecoverable(t.trailingComma,"Comma is not permitted after the rest element");var i=e?t.parenthesizedAssign:t.parenthesizedBind;i>-1&&this.raiseRecoverable(i,"Parenthesized pattern")}},q.checkExpressionErrors=function(t,e){if(!t)return!1;var i=t.shorthandAssign,s=t.doubleProto;if(!e)return i>=0||s>=0;i>=0&&this.raise(i,"Shorthand property assignments are valid only in destructuring patterns"),s>=0&&this.raiseRecoverable(s,"Redefinition of __proto__ property")},q.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")},q.isSimpleAssignTarget=function(t){return"ParenthesizedExpression"===t.type?this.isSimpleAssignTarget(t.expression):"Identifier"===t.type||"MemberExpression"===t.type};var W=M.prototype;W.parseTopLevel=function(t){var e={};for(t.body||(t.body=[]);this.type!==x.eof;){var i=this.parseStatement(null,!0,e);t.body.push(i)}if(this.inModule)for(var s=0,r=Object.keys(this.undefinedExports);s<r.length;s+=1){var n=r[s];this.raiseRecoverable(this.undefinedExports[n].start,"Export '"+n+"' is not defined")}return this.adaptDirectivePrologue(t.body),this.next(),this.options.ecmaVersion>=6&&(t.sourceType=this.options.sourceType),this.finishNode(t,"Program")};var 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this.next(),this.semicolon(),this.finishNode(t,"DebuggerStatement")},W.parseDoStatement=function(t){return this.next(),this.labels.push(z),t.body=this.parseStatement("do"),this.labels.pop(),this.expect(x._while),t.test=this.parseParenExpression(),this.options.ecmaVersion>=6?this.eat(x.semi):this.semicolon(),this.finishNode(t,"DoWhileStatement")},W.parseForStatement=function(t){this.next();var e=this.options.ecmaVersion>=9&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction)&&this.eatContextual("await")?this.lastTokStart:-1;if(this.labels.push(z),this.enterScope(0),this.expect(x.parenL),this.type===x.semi)return e>-1&&this.unexpected(e),this.parseFor(t,null);var i=this.isLet();if(this.type===x._var||this.type===x._const||i){var s=this.startNode(),r=i?"let":this.value;return 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this.next(),t.test=this.parseParenExpression(),t.consequent=this.parseStatement("if"),t.alternate=this.eat(x._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(x.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(x.braceL),this.labels.push(H),this.enterScope(0);for(var i=!1;this.type!==x.braceR;)if(this.type===x._case||this.type===x._default){var s=this.type===x._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 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t.finalizer=this.eat(x._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(z),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 r=0,n=this.labels;r<n.length;r+=1)n[r].name===e&&this.raise(i.start,"Label '"+e+"' is already declared");for(var a=this.type.isLoop?"loop":this.type===x._switch?"switch":null,o=this.labels.length-1;o>=0;o--){var p=this.labels[o];if(p.statementStart!==t.start)break;p.statementStart=this.start,p.kind=a}return this.labels.push({name:e,kind:a,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(x.braceL),t&&this.enterScope(0);!this.eat(x.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(x.semi),t.test=this.type===x.semi?null:this.parseExpression(),this.expect(x.semi),t.update=this.type===x.parenR?null:this.parseExpression(),this.expect(x.parenR),t.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(t,"ForStatement")},W.parseForIn=function(t,e){var i=this.type===x._in?"ForInStatement":"ForOfStatement";return this.next(),"ForInStatement"===i&&("AssignmentPattern"===e.type||"VariableDeclaration"===e.type&&null!=e.declarations[0].init&&(this.strict||"Identifier"!==e.declarations[0].id.type))&&this.raise(e.start,"Invalid assignment in for-in loop head"),t.left=e,t.right="ForInStatement"===i?this.parseExpression():this.parseMaybeAssign(),this.expect(x.parenR),t.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(t,i)},W.parseVar=function(t,e,i){for(t.declarations=[],t.kind=i;;){var 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Q=1,K=2;W.parseFunction=function(t,e,i,s){this.initFunction(t),(this.options.ecmaVersion>=9||this.options.ecmaVersion>=6&&!s)&&(this.type===x.star&&e&K&&this.unexpected(),t.generator=this.eat(x.star)),this.options.ecmaVersion>=8&&(t.async=!!s),e&Q&&(t.id=4&e&&this.type!==x.name?null:this.parseIdent(),!t.id||e&K||this.checkLVal(t.id,this.strict||t.generator||t.async?this.treatFunctionsAsVar?1:2:3));var r=this.yieldPos,n=this.awaitPos,a=this.awaitIdentPos;return this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,this.enterScope(F(t.async,t.generator)),e&Q||(t.id=this.type===x.name?this.parseIdent():null),this.parseFunctionParams(t),this.parseFunctionBody(t,i,!1),this.yieldPos=r,this.awaitPos=n,this.awaitIdentPos=a,this.finishNode(t,e&Q?"FunctionDeclaration":"FunctionExpression")},W.parseFunctionParams=function(t){this.expect(x.parenL),t.params=this.parseBindingList(x.parenR,!1,this.options.ecmaVersion>=8),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(),r=!1;for(s.body=[],this.expect(x.braceL);!this.eat(x.braceR);){var n=this.parseClassElement(null!==t.superClass);n&&(s.body.push(n),"MethodDefinition"===n.type&&"constructor"===n.kind&&(r&&this.raise(n.start,"Duplicate constructor in the same class"),r=!0))}return t.body=this.finishNode(s,"ClassBody"),this.strict=i,this.finishNode(t,e?"ClassDeclaration":"ClassExpression")},W.parseClassElement=function(t){var e=this;if(this.eat(x.semi))return null;var i=this.startNode(),s=function(t,s){void 0===s&&(s=!1);var r=e.start,n=e.startLoc;return!(!e.eatContextual(t)||(e.type===x.parenL||s&&e.canInsertSemicolon())&&(i.key&&e.unexpected(),i.computed=!1,i.key=e.startNodeAt(r,n),i.key.name=t,e.finishNode(i.key,"Identifier"),1))};i.kind="method",i.static=s("static");var r=this.eat(x.star),n=!1;r||(this.options.ecmaVersion>=8&&s("async",!0)?(n=!0,r=this.options.ecmaVersion>=9&&this.eat(x.star)):s("get")?i.kind="get":s("set")&&(i.kind="set")),i.key||this.parsePropertyName(i);var a=i.key,o=!1;return i.computed||i.static||!("Identifier"===a.type&&"constructor"===a.name||"Literal"===a.type&&"constructor"===a.value)?i.static&&"Identifier"===a.type&&"prototype"===a.name&&this.raise(a.start,"Classes may not have a static property named prototype"):("method"!==i.kind&&this.raise(a.start,"Constructor can't have get/set modifier"),r&&this.raise(a.start,"Constructor can't be a generator"),n&&this.raise(a.start,"Constructor can't be an async method"),i.kind="constructor",o=t),this.parseClassMethod(i,r,n,o),"get"===i.kind&&0!==i.value.params.length&&this.raiseRecoverable(i.value.start,"getter should have no params"),"set"===i.kind&&1!==i.value.params.length&&this.raiseRecoverable(i.value.start,"setter should have exactly one 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r=this.startNode();t.declaration=this.parseClass(r,"nullableID")}else t.declaration=this.parseMaybeAssign(),this.semicolon();return this.finishNode(t,"ExportDefaultDeclaration")}if(this.shouldParseExportStatement())t.declaration=this.parseStatement(null),"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!==x.string&&this.unexpected(),t.source=this.parseExprAtom();else{for(var n=0,a=t.specifiers;n<a.length;n+=1){var o=a[n];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&&(I(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,r=e.properties;s<r.length;s+=1)this.checkPatternExport(t,r[s]);else if("ArrayPattern"===i)for(var n=0,a=e.elements;n<a.length;n+=1){var o=a[n];o&&this.checkPatternExport(t,o)}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)this.checkPatternExport(t,s[i].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(x.braceL);!this.eat(x.braceR);){if(i)i=!1;else if(this.expect(x.comma),this.afterTrailingComma(x.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===x.string?(t.specifiers=G,t.source=this.parseExprAtom()):(t.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),t.source=this.type===x.string?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(t,"ImportDeclaration")},W.parseImportSpecifiers=function(){var t=[],e=!0;if(this.type===x.name){var i=this.startNode();if(i.local=this.parseIdent(),this.checkLVal(i.local,2),t.push(this.finishNode(i,"ImportDefaultSpecifier")),!this.eat(x.comma))return t}if(this.type===x.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(x.braceL);!this.eat(x.braceR);){if(e)e=!1;else if(this.expect(x.comma),this.afterTrailingComma(x.braceR))break;var r=this.startNode();r.imported=this.parseIdent(!0),this.eatContextual("as")?r.local=this.parseIdent():(this.checkUnreserved(r.imported),r.local=r.imported),this.checkLVal(r.local,2),t.push(this.finishNode(r,"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 $=M.prototype;$.toAssignable=function(t,e,i){if(this.options.ecmaVersion>=6&&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,r=t.properties;s<r.length;s+=1){var n=r[s];this.toAssignable(n,e),"RestElement"!==n.type||"ArrayPattern"!==n.argument.type&&"ObjectPattern"!==n.argument.type||this.raise(n.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 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this.next(),6===this.options.ecmaVersion&&this.type!==x.name&&this.unexpected(),t.argument=this.parseBindingAtom(),this.finishNode(t,"RestElement")},$.parseBindingAtom=function(){if(this.options.ecmaVersion>=6)switch(this.type){case x.bracketL:var t=this.startNode();return this.next(),t.elements=this.parseBindingList(x.bracketR,!0,!0),this.finishNode(t,"ArrayPattern");case x.braceL:return this.parseObj(!0)}return this.parseIdent()},$.parseBindingList=function(t,e,i){for(var s=[],r=!0;!this.eat(t);)if(r?r=!1:this.expect(x.comma),e&&this.type===x.comma)s.push(null);else{if(i&&this.afterTrailingComma(t))break;if(this.type===x.ellipsis){var n=this.parseRestBinding();this.parseBindingListItem(n),s.push(n),this.type===x.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.expect(t);break}var a=this.parseMaybeDefault(this.start,this.startLoc);this.parseBindingListItem(a),s.push(a)}return s},$.parseBindingListItem=function(t){return t},$.parseMaybeDefault=function(t,e,i){if(i=i||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(x.eq))return i;var s=this.startNodeAt(t,e);return s.left=i,s.right=this.parseMaybeAssign(),this.finishNode(s,"AssignmentPattern")},$.checkLVal=function(t,e,i){switch(void 0===e&&(e=0),t.type){case"Identifier":this.strict&&this.reservedWordsStrictBind.test(t.name)&&this.raiseRecoverable(t.start,(e?"Binding ":"Assigning to ")+t.name+" in strict mode"),i&&(I(i,t.name)&&this.raiseRecoverable(t.start,"Argument name clash"),i[t.name]=!0),0!==e&&5!==e&&this.declareName(t.name,e,t.start);break;case"MemberExpression":e&&this.raiseRecoverable(t.start,"Binding member expression");break;case"ObjectPattern":for(var s=0,r=t.properties;s<r.length;s+=1)this.checkLVal(r[s],e,i);break;case"Property":this.checkLVal(t.value,e,i);break;case"ArrayPattern":for(var n=0,a=t.elements;n<a.length;n+=1){var o=a[n];o&&this.checkLVal(o,e,i)}break;case"AssignmentPattern":this.checkLVal(t.left,e,i);break;case"RestElement":this.checkLVal(t.argument,e,i);break;case"ParenthesizedExpression":this.checkLVal(t.expression,e,i);break;default:this.raise(t.start,(e?"Binding":"Assigning to")+" rvalue")}};var Y=M.prototype;Y.checkPropClash=function(t,e,i){if(!(this.options.ecmaVersion>=9&&"SpreadElement"===t.type||this.options.ecmaVersion>=6&&(t.computed||t.method||t.shorthand))){var s,r=t.key;switch(r.type){case"Identifier":s=r.name;break;case"Literal":s=String(r.value);break;default:return}var n=t.kind;if(this.options.ecmaVersion>=6)"__proto__"===s&&"init"===n&&(e.proto&&(i&&i.doubleProto<0?i.doubleProto=r.start:this.raiseRecoverable(r.start,"Redefinition of __proto__ property")),e.proto=!0);else{var a=e[s="$"+s];a?("init"===n?this.strict&&a.init||a.get||a.set:a.init||a[n])&&this.raiseRecoverable(r.start,"Redefinition of 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n=this.type.binop;if(null!=n&&(!r||this.type!==x._in)&&n>s){var a=this.type===x.logicalOR||this.type===x.logicalAND,o=this.value;this.next();var p=this.start,h=this.startLoc,c=this.parseExprOp(this.parseMaybeUnary(null,!1),p,h,n,r),l=this.buildBinary(e,i,t,c,o,a);return this.parseExprOp(l,e,i,s,r)}return t},Y.buildBinary=function(t,e,i,s,r,n){var a=this.startNodeAt(t,e);return a.left=i,a.operator=r,a.right=s,this.finishNode(a,n?"LogicalExpression":"BinaryExpression")},Y.parseMaybeUnary=function(t,e){var i,s=this.start,r=this.startLoc;if(this.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))i=this.parseAwait(),e=!0;else if(this.type.prefix){var n=this.startNode(),a=this.type===x.incDec;n.operator=this.value,n.prefix=!0,this.next(),n.argument=this.parseMaybeUnary(null,!0),this.checkExpressionErrors(t,!0),a?this.checkLVal(n.argument):this.strict&&"delete"===n.operator&&"Identifier"===n.argument.type?this.raiseRecoverable(n.start,"Deleting 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r=this.options.ecmaVersion>=8&&"Identifier"===t.type&&"async"===t.name&&this.lastTokEnd===t.end&&!this.canInsertSemicolon()&&"async"===this.input.slice(t.start,t.end);;){var n=this.parseSubscript(t,e,i,s,r);if(n===t||"ArrowFunctionExpression"===n.type)return n;t=n}},Y.parseSubscript=function(t,e,i,s,r){var n=this.eat(x.bracketL);if(n||this.eat(x.dot)){var a=this.startNodeAt(e,i);a.object=t,a.property=n?this.parseExpression():this.parseIdent(!0),a.computed=!!n,n&&this.expect(x.bracketR),t=this.finishNode(a,"MemberExpression")}else if(!s&&this.eat(x.parenL)){var o=new J,p=this.yieldPos,h=this.awaitPos,c=this.awaitIdentPos;this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0;var l=this.parseExprList(x.parenR,this.options.ecmaVersion>=8,!1,o);if(r&&!this.canInsertSemicolon()&&this.eat(x.arrow))return this.checkPatternErrors(o,!1),this.checkYieldAwaitInDefaultParams(),this.awaitIdentPos>0&&this.raise(this.awaitIdentPos,"Cannot use 'await' as identifier inside an async 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x._this:return e=this.startNode(),this.next(),this.finishNode(e,"ThisExpression");case x.name:var s=this.start,r=this.startLoc,n=this.containsEsc,a=this.parseIdent(!1);if(this.options.ecmaVersion>=8&&!n&&"async"===a.name&&!this.canInsertSemicolon()&&this.eat(x._function))return this.parseFunction(this.startNodeAt(s,r),0,!1,!0);if(i&&!this.canInsertSemicolon()){if(this.eat(x.arrow))return this.parseArrowExpression(this.startNodeAt(s,r),[a],!1);if(this.options.ecmaVersion>=8&&"async"===a.name&&this.type===x.name&&!n)return a=this.parseIdent(!1),!this.canInsertSemicolon()&&this.eat(x.arrow)||this.unexpected(),this.parseArrowExpression(this.startNodeAt(s,r),[a],!0)}return a;case x.regexp:var o=this.value;return(e=this.parseLiteral(o.value)).regex={pattern:o.pattern,flags:o.flags},e;case x.num:case x.string:return this.parseLiteral(this.value);case x._null:case x._true:case x._false:return(e=this.startNode()).value=this.type===x._null?null:this.type===x._true,e.raw=this.type.keyword,this.next(),this.finishNode(e,"Literal");case x.parenL:var p=this.start,h=this.parseParenAndDistinguishExpression(i);return t&&(t.parenthesizedAssign<0&&!this.isSimpleAssignTarget(h)&&(t.parenthesizedAssign=p),t.parenthesizedBind<0&&(t.parenthesizedBind=p)),h;case x.bracketL:return e=this.startNode(),this.next(),e.elements=this.parseExprList(x.bracketR,!0,!0,t),this.finishNode(e,"ArrayExpression");case x.braceL:return this.parseObj(!1,t);case x._function:return e=this.startNode(),this.next(),this.parseFunction(e,0);case x._class:return this.parseClass(this.startNode(),!1);case x._new:return this.parseNew();case x.backQuote:return this.parseTemplate();default:this.unexpected()}},Y.parseLiteral=function(t){var e=this.startNode();return e.value=t,e.raw=this.input.slice(this.start,this.end),this.next(),this.finishNode(e,"Literal")},Y.parseParenExpression=function(){this.expect(x.parenL);var t=this.parseExpression();return this.expect(x.parenR),t},Y.parseParenAndDistinguishExpression=function(t){var e,i=this.start,s=this.startLoc,r=this.options.ecmaVersion>=8;if(this.options.ecmaVersion>=6){this.next();var n,a=this.start,o=this.startLoc,p=[],h=!0,c=!1,l=new J,u=this.yieldPos,d=this.awaitPos;for(this.yieldPos=0,this.awaitPos=0;this.type!==x.parenR;){if(h?h=!1:this.expect(x.comma),r&&this.afterTrailingComma(x.parenR,!0)){c=!0;break}if(this.type===x.ellipsis){n=this.start,p.push(this.parseParenItem(this.parseRestBinding())),this.type===x.comma&&this.raise(this.start,"Comma is not permitted after the rest element");break}p.push(this.parseMaybeAssign(!1,l,this.parseParenItem))}var f=this.start,m=this.startLoc;if(this.expect(x.parenR),t&&!this.canInsertSemicolon()&&this.eat(x.arrow))return this.checkPatternErrors(l,!1),this.checkYieldAwaitInDefaultParams(),this.yieldPos=u,this.awaitPos=d,this.parseParenArrowList(i,s,p);p.length&&!c||this.unexpected(this.lastTokStart),n&&this.unexpected(n),this.checkExpressionErrors(l,!0),this.yieldPos=u||this.yieldPos,this.awaitPos=d||this.awaitPos,p.length>1?((e=this.startNodeAt(a,o)).expressions=p,this.finishNodeAt(e,"SequenceExpression",f,m)):e=p[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},Y.parseParenItem=function(t){return t},Y.parseParenArrowList=function(t,e,i){return this.parseArrowExpression(this.startNodeAt(t,e),i)};var Z=[];Y.parseNew=function(){var t=this.startNode(),e=this.parseIdent(!0);if(this.options.ecmaVersion>=6&&this.eat(x.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 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s=this.parseTemplateElement({isTagged:e});for(i.quasis=[s];!s.tail;)this.type===x.eof&&this.raise(this.pos,"Unterminated template literal"),this.expect(x.dollarBraceL),i.expressions.push(this.parseExpression()),this.expect(x.braceR),i.quasis.push(s=this.parseTemplateElement({isTagged:e}));return this.next(),this.finishNode(i,"TemplateLiteral")},Y.isAsyncProp=function(t){return!t.computed&&"Identifier"===t.key.type&&"async"===t.key.name&&(this.type===x.name||this.type===x.num||this.type===x.string||this.type===x.bracketL||this.type.keyword||this.options.ecmaVersion>=9&&this.type===x.star)&&!b.test(this.input.slice(this.lastTokEnd,this.start))},Y.parseObj=function(t,e){var i=this.startNode(),s=!0,r={};for(i.properties=[],this.next();!this.eat(x.braceR);){if(s)s=!1;else if(this.expect(x.comma),this.afterTrailingComma(x.braceR))break;var n=this.parseProperty(t,e);t||this.checkPropClash(n,r,e),i.properties.push(n)}return this.finishNode(i,t?"ObjectPattern":"ObjectExpression")},Y.parseProperty=function(t,e){var i,s,r,n,a=this.startNode();if(this.options.ecmaVersion>=9&&this.eat(x.ellipsis))return t?(a.argument=this.parseIdent(!1),this.type===x.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.finishNode(a,"RestElement")):(this.type===x.parenL&&e&&(e.parenthesizedAssign<0&&(e.parenthesizedAssign=this.start),e.parenthesizedBind<0&&(e.parenthesizedBind=this.start)),a.argument=this.parseMaybeAssign(!1,e),this.type===x.comma&&e&&e.trailingComma<0&&(e.trailingComma=this.start),this.finishNode(a,"SpreadElement"));this.options.ecmaVersion>=6&&(a.method=!1,a.shorthand=!1,(t||e)&&(r=this.start,n=this.startLoc),t||(i=this.eat(x.star)));var o=this.containsEsc;return this.parsePropertyName(a),!t&&!o&&this.options.ecmaVersion>=8&&!i&&this.isAsyncProp(a)?(s=!0,i=this.options.ecmaVersion>=9&&this.eat(x.star),this.parsePropertyName(a,e)):s=!1,this.parsePropertyValue(a,t,i,s,r,n,e,o),this.finishNode(a,"Property")},Y.parsePropertyValue=function(t,e,i,s,r,n,a,o){(i||s)&&this.type===x.colon&&this.unexpected(),this.eat(x.colon)?(t.value=e?this.parseMaybeDefault(this.start,this.startLoc):this.parseMaybeAssign(!1,a),t.kind="init"):this.options.ecmaVersion>=6&&this.type===x.parenL?(e&&this.unexpected(),t.kind="init",t.method=!0,t.value=this.parseMethod(i,s)):e||o||!(this.options.ecmaVersion>=5)||t.computed||"Identifier"!==t.key.type||"get"!==t.key.name&&"set"!==t.key.name||this.type===x.comma||this.type===x.braceR?this.options.ecmaVersion>=6&&!t.computed&&"Identifier"===t.key.type?((i||s)&&this.unexpected(),this.checkUnreserved(t.key),"await"!==t.key.name||this.awaitIdentPos||(this.awaitIdentPos=r),t.kind="init",e?t.value=this.parseMaybeDefault(r,n,t.key):this.type===x.eq&&a?(a.shorthandAssign<0&&(a.shorthandAssign=this.start),t.value=this.parseMaybeDefault(r,n,t.key)):t.value=t.key,t.shorthand=!0):this.unexpected():((i||s)&&this.unexpected(),t.kind=t.key.name,this.parsePropertyName(t),t.value=this.parseMethod(!1),t.value.params.length!==("get"===t.kind?0:1)?this.raiseRecoverable(t.value.start,"get"===t.kind?"getter 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