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e.init=t,this.expect(k.semi),e.test=this.type===k.semi?null:this.parseExpression(),this.expect(k.semi),e.update=this.type===k.parenR?null:this.parseExpression(),this.expect(k.parenR),e.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(e,"ForStatement")},W.parseForIn=function(e,t){var r=this.type===k._in;return this.next(),"VariableDeclaration"===t.type&&null!=t.declarations[0].init&&(!r||this.options.ecmaVersion<8||this.strict||"var"!==t.kind||"Identifier"!==t.declarations[0].id.type)?this.raise(t.start,(r?"for-in":"for-of")+" loop variable declaration may not have an initializer"):"AssignmentPattern"===t.type&&this.raise(t.start,"Invalid left-hand side in for-loop"),e.left=t,e.right=r?this.parseExpression():this.parseMaybeAssign(),this.expect(k.parenR),e.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(e,r?"ForInStatement":"ForOfStatement")},W.parseVar=function(e,t,r){for(e.declarations=[],e.kind=r;;){var i=this.startNode();if(this.parseVarId(i,r),this.eat(k.eq)?i.init=this.parseMaybeAssign(t):"const"!==r||this.type===k._in||this.options.ecmaVersion>=6&&this.isContextual("of")?"Identifier"===i.id.type||t&&(this.type===k._in||this.isContextual("of"))?i.init=null:this.raise(this.lastTokEnd,"Complex binding patterns require an initialization value"):this.unexpected(),e.declarations.push(this.finishNode(i,"VariableDeclarator")),!this.eat(k.comma))break}return e},W.parseVarId=function(e,t){e.id=this.parseBindingAtom(),this.checkLVal(e.id,"var"===t?1:2,!1)};var Q=1,X=2;W.parseFunction=function(e,t,r,i){this.initFunction(e),(this.options.ecmaVersion>=9||this.options.ecmaVersion>=6&&!i)&&(this.type===k.star&&t&X&&this.unexpected(),e.generator=this.eat(k.star)),this.options.ecmaVersion>=8&&(e.async=!!i),t&Q&&(e.id=4&t&&this.type!==k.name?null:this.parseIdent(),!e.id||t&X||this.checkLVal(e.id,this.strict||e.generator||e.async?this.treatFunctionsAsVar?1:2:3));var n=this.yieldPos,s=this.awaitPos,a=this.awaitIdentPos;return this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,this.enterScope(D(e.async,e.generator)),t&Q||(e.id=this.type===k.name?this.parseIdent():null),this.parseFunctionParams(e),this.parseFunctionBody(e,r,!1),this.yieldPos=n,this.awaitPos=s,this.awaitIdentPos=a,this.finishNode(e,t&Q?"FunctionDeclaration":"FunctionExpression")},W.parseFunctionParams=function(e){this.expect(k.parenL),e.params=this.parseBindingList(k.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams()},W.parseClass=function(e,t){this.next();var r=this.strict;this.strict=!0,this.parseClassId(e,t),this.parseClassSuper(e);var i=this.startNode(),n=!1;for(i.body=[],this.expect(k.braceL);!this.eat(k.braceR);){var s=this.parseClassElement(null!==e.superClass);s&&(i.body.push(s),"MethodDefinition"===s.type&&"constructor"===s.kind&&(n&&this.raise(s.start,"Duplicate constructor in the same class"),n=!0))}return e.body=this.finishNode(i,"ClassBody"),this.strict=r,this.finishNode(e,t?"ClassDeclaration":"ClassExpression")},W.parseClassElement=function(e){var t=this;if(this.eat(k.semi))return null;var r=this.startNode(),i=function(e,i){void 0===i&&(i=!1);var n=t.start,s=t.startLoc;return!(!t.eatContextual(e)||(t.type===k.parenL||i&&t.canInsertSemicolon())&&(r.key&&t.unexpected(),r.computed=!1,r.key=t.startNodeAt(n,s),r.key.name=e,t.finishNode(r.key,"Identifier"),1))};r.kind="method",r.static=i("static");var n=this.eat(k.star),s=!1;n||(this.options.ecmaVersion>=8&&i("async",!0)?(s=!0,n=this.options.ecmaVersion>=9&&this.eat(k.star)):i("get")?r.kind="get":i("set")&&(r.kind="set")),r.key||this.parsePropertyName(r);var a=r.key,o=!1;return r.computed||r.static||!("Identifier"===a.type&&"constructor"===a.name||"Literal"===a.type&&"constructor"===a.value)?r.static&&"Identifier"===a.type&&"prototype"===a.name&&this.raise(a.start,"Classes may not have a static property named prototype"):("method"!==r.kind&&this.raise(a.start,"Constructor can't have get/set modifier"),n&&this.raise(a.start,"Constructor can't be a generator"),s&&this.raise(a.start,"Constructor can't be an async method"),r.kind="constructor",o=e),this.parseClassMethod(r,n,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(e,t,r,i){return e.value=this.parseMethod(t,r,i),this.finishNode(e,"MethodDefinition")},W.parseClassId=function(e,t){this.type===k.name?(e.id=this.parseIdent(),t&&this.checkLVal(e.id,2,!1)):(!0===t&&this.unexpected(),e.id=null)},W.parseClassSuper=function(e){e.superClass=this.eat(k._extends)?this.parseExprSubscripts():null},W.parseExport=function(e,t){if(this.next(),this.eat(k.star))return this.expectContextual("from"),this.type!==k.string&&this.unexpected(),e.source=this.parseExprAtom(),this.semicolon(),this.finishNode(e,"ExportAllDeclaration");if(this.eat(k._default)){var r;if(this.checkExport(t,"default",this.lastTokStart),this.type===k._function||(r=this.isAsyncFunction())){var i=this.startNode();this.next(),r&&this.next(),e.declaration=this.parseFunction(i,4|Q,!1,r)}else if(this.type===k._class){var n=this.startNode();e.declaration=this.parseClass(n,"nullableID")}else e.declaration=this.parseMaybeAssign(),this.semicolon();return this.finishNode(e,"ExportDefaultDeclaration")}if(this.shouldParseExportStatement())e.declaration=this.parseStatement(null),"VariableDeclaration"===e.declaration.type?this.checkVariableExport(t,e.declaration.declarations):this.checkExport(t,e.declaration.id.name,e.declaration.id.start),e.specifiers=[],e.source=null;else{if(e.declaration=null,e.specifiers=this.parseExportSpecifiers(t),this.eatContextual("from"))this.type!==k.string&&this.unexpected(),e.source=this.parseExprAtom();else{for(var s=0,a=e.specifiers;s<a.length;s+=1){var o=a[s];this.checkUnreserved(o.local),this.checkLocalExport(o.local)}e.source=null}this.semicolon()}return this.finishNode(e,"ExportNamedDeclaration")},W.checkExport=function(e,t,r){e&&(L(e,t)&&this.raiseRecoverable(r,"Duplicate export '"+t+"'"),e[t]=!0)},W.checkPatternExport=function(e,t){var r=t.type;if("Identifier"===r)this.checkExport(e,t.name,t.start);else if("ObjectPattern"===r)for(var i=0,n=t.properties;i<n.length;i+=1)this.checkPatternExport(e,n[i]);else if("ArrayPattern"===r)for(var s=0,a=t.elements;s<a.length;s+=1){var o=a[s];o&&this.checkPatternExport(e,o)}else"Property"===r?this.checkPatternExport(e,t.value):"AssignmentPattern"===r?this.checkPatternExport(e,t.left):"RestElement"===r?this.checkPatternExport(e,t.argument):"ParenthesizedExpression"===r&&this.checkPatternExport(e,t.expression)},W.checkVariableExport=function(e,t){if(e)for(var r=0,i=t;r<i.length;r+=1)this.checkPatternExport(e,i[r].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(e){var t=[],r=!0;for(this.expect(k.braceL);!this.eat(k.braceR);){if(r)r=!1;else if(this.expect(k.comma),this.afterTrailingComma(k.braceR))break;var i=this.startNode();i.local=this.parseIdent(!0),i.exported=this.eatContextual("as")?this.parseIdent(!0):i.local,this.checkExport(e,i.exported.name,i.exported.start),t.push(this.finishNode(i,"ExportSpecifier"))}return t},W.parseImport=function(e){return this.next(),this.type===k.string?(e.specifiers=K,e.source=this.parseExprAtom()):(e.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),e.source=this.type===k.string?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(e,"ImportDeclaration")},W.parseImportSpecifiers=function(){var e=[],t=!0;if(this.type===k.name){var r=this.startNode();if(r.local=this.parseIdent(),this.checkLVal(r.local,2),e.push(this.finishNode(r,"ImportDefaultSpecifier")),!this.eat(k.comma))return e}if(this.type===k.star){var i=this.startNode();return this.next(),this.expectContextual("as"),i.local=this.parseIdent(),this.checkLVal(i.local,2),e.push(this.finishNode(i,"ImportNamespaceSpecifier")),e}for(this.expect(k.braceL);!this.eat(k.braceR);){if(t)t=!1;else if(this.expect(k.comma),this.afterTrailingComma(k.braceR))break;var n=this.startNode();n.imported=this.parseIdent(!0),this.eatContextual("as")?n.local=this.parseIdent():(this.checkUnreserved(n.imported),n.local=n.imported),this.checkLVal(n.local,2),e.push(this.finishNode(n,"ImportSpecifier"))}return e},W.adaptDirectivePrologue=function(e){for(var t=0;t<e.length&&this.isDirectiveCandidate(e[t]);++t)e[t].directive=e[t].expression.raw.slice(1,-1)},W.isDirectiveCandidate=function(e){return"ExpressionStatement"===e.type&&"Literal"===e.expression.type&&"string"==typeof e.expression.value&&('"'===this.input[e.start]||"'"===this.input[e.start])};var J=U.prototype;J.toAssignable=function(e,t,r){if(this.options.ecmaVersion>=6&&e)switch(e.type){case"Identifier":this.inAsync&&"await"===e.name&&this.raise(e.start,"Cannot use 'await' as identifier inside an async function");break;case"ObjectPattern":case"ArrayPattern":case"RestElement":break;case"ObjectExpression":e.type="ObjectPattern",r&&this.checkPatternErrors(r,!0);for(var i=0,n=e.properties;i<n.length;i+=1){var s=n[i];this.toAssignable(s,t),"RestElement"!==s.type||"ArrayPattern"!==s.argument.type&&"ObjectPattern"!==s.argument.type||this.raise(s.argument.start,"Unexpected token")}break;case"Property":"init"!==e.kind&&this.raise(e.key.start,"Object pattern can't contain getter or setter"),this.toAssignable(e.value,t);break;case"ArrayExpression":e.type="ArrayPattern",r&&this.checkPatternErrors(r,!0),this.toAssignableList(e.elements,t);break;case"SpreadElement":e.type="RestElement",this.toAssignable(e.argument,t),"AssignmentPattern"===e.argument.type&&this.raise(e.argument.start,"Rest elements cannot have a default value");break;case"AssignmentExpression":"="!==e.operator&&this.raise(e.left.end,"Only '=' operator can be used for specifying default value."),e.type="AssignmentPattern",delete e.operator,this.toAssignable(e.left,t);case"AssignmentPattern":break;case"ParenthesizedExpression":this.toAssignable(e.expression,t,r);break;case"MemberExpression":if(!t)break;default:this.raise(e.start,"Assigning to rvalue")}else r&&this.checkPatternErrors(r,!0);return e},J.toAssignableList=function(e,t){for(var r=e.length,i=0;i<r;i++){var n=e[i];n&&this.toAssignable(n,t)}if(r){var s=e[r-1];6===this.options.ecmaVersion&&t&&s&&"RestElement"===s.type&&"Identifier"!==s.argument.type&&this.unexpected(s.argument.start)}return e},J.parseSpread=function(e){var t=this.startNode();return this.next(),t.argument=this.parseMaybeAssign(!1,e),this.finishNode(t,"SpreadElement")},J.parseRestBinding=function(){var e=this.startNode();return this.next(),6===this.options.ecmaVersion&&this.type!==k.name&&this.unexpected(),e.argument=this.parseBindingAtom(),this.finishNode(e,"RestElement")},J.parseBindingAtom=function(){if(this.options.ecmaVersion>=6)switch(this.type){case k.bracketL:var e=this.startNode();return this.next(),e.elements=this.parseBindingList(k.bracketR,!0,!0),this.finishNode(e,"ArrayPattern");case k.braceL:return this.parseObj(!0)}return this.parseIdent()},J.parseBindingList=function(e,t,r){for(var i=[],n=!0;!this.eat(e);)if(n?n=!1:this.expect(k.comma),t&&this.type===k.comma)i.push(null);else{if(r&&this.afterTrailingComma(e))break;if(this.type===k.ellipsis){var s=this.parseRestBinding();this.parseBindingListItem(s),i.push(s),this.type===k.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.expect(e);break}var a=this.parseMaybeDefault(this.start,this.startLoc);this.parseBindingListItem(a),i.push(a)}return i},J.parseBindingListItem=function(e){return e},J.parseMaybeDefault=function(e,t,r){if(r=r||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(k.eq))return r;var i=this.startNodeAt(e,t);return i.left=r,i.right=this.parseMaybeAssign(),this.finishNode(i,"AssignmentPattern")},J.checkLVal=function(e,t,r){switch(void 0===t&&(t=0),e.type){case"Identifier":2===t&&"let"===e.name&&this.raiseRecoverable(e.start,"let is disallowed as a lexically bound name"),this.strict&&this.reservedWordsStrictBind.test(e.name)&&this.raiseRecoverable(e.start,(t?"Binding ":"Assigning to ")+e.name+" in strict mode"),r&&(L(r,e.name)&&this.raiseRecoverable(e.start,"Argument name clash"),r[e.name]=!0),0!==t&&5!==t&&this.declareName(e.name,t,e.start);break;case"MemberExpression":t&&this.raiseRecoverable(e.start,"Binding member expression");break;case"ObjectPattern":for(var i=0,n=e.properties;i<n.length;i+=1)this.checkLVal(n[i],t,r);break;case"Property":this.checkLVal(e.value,t,r);break;case"ArrayPattern":for(var s=0,a=e.elements;s<a.length;s+=1){var o=a[s];o&&this.checkLVal(o,t,r)}break;case"AssignmentPattern":this.checkLVal(e.left,t,r);break;case"RestElement":this.checkLVal(e.argument,t,r);break;case"ParenthesizedExpression":this.checkLVal(e.expression,t,r);break;default:this.raise(e.start,(t?"Binding":"Assigning to")+" rvalue")}};var Z=U.prototype;Z.checkPropClash=function(e,t,r){if(!(this.options.ecmaVersion>=9&&"SpreadElement"===e.type||this.options.ecmaVersion>=6&&(e.computed||e.method||e.shorthand))){var i,n=e.key;switch(n.type){case"Identifier":i=n.name;break;case"Literal":i=String(n.value);break;default:return}var s=e.kind;if(this.options.ecmaVersion>=6)"__proto__"===i&&"init"===s&&(t.proto&&(r&&r.doubleProto<0?r.doubleProto=n.start:this.raiseRecoverable(n.start,"Redefinition of __proto__ property")),t.proto=!0);else{var a=t[i="$"+i];a?("init"===s?this.strict&&a.init||a.get||a.set:a.init||a[s])&&this.raiseRecoverable(n.start,"Redefinition of property"):a=t[i]={init:!1,get:!1,set:!1},a[s]=!0}}},Z.parseExpression=function(e,t){var r=this.start,i=this.startLoc,n=this.parseMaybeAssign(e,t);if(this.type===k.comma){var s=this.startNodeAt(r,i);for(s.expressions=[n];this.eat(k.comma);)s.expressions.push(this.parseMaybeAssign(e,t));return this.finishNode(s,"SequenceExpression")}return n},Z.parseMaybeAssign=function(e,t,r){if(this.isContextual("yield")){if(this.inGenerator)return this.parseYield(e);this.exprAllowed=!1}var i=!1,n=-1,s=-1,a=-1;t?(n=t.parenthesizedAssign,s=t.trailingComma,a=t.shorthandAssign,t.parenthesizedAssign=t.trailingComma=t.shorthandAssign=-1):(t=new G,i=!0);var o=this.start,c=this.startLoc;this.type!==k.parenL&&this.type!==k.name||(this.potentialArrowAt=this.start);var h=this.parseMaybeConditional(e,t);if(r&&(h=r.call(this,h,o,c)),this.type.isAssign){var u=this.startNodeAt(o,c);return u.operator=this.value,u.left=this.type===k.eq?this.toAssignable(h,!1,t):h,i||G.call(t),t.shorthandAssign=-1,this.checkLVal(h),this.next(),u.right=this.parseMaybeAssign(e),this.finishNode(u,"AssignmentExpression")}return i&&this.checkExpressionErrors(t,!0),n>-1&&(t.parenthesizedAssign=n),s>-1&&(t.trailingComma=s),a>-1&&(t.shorthandAssign=a),h},Z.parseMaybeConditional=function(e,t){var r=this.start,i=this.startLoc,n=this.parseExprOps(e,t);if(this.checkExpressionErrors(t))return n;if(this.eat(k.question)){var s=this.startNodeAt(r,i);return s.test=n,s.consequent=this.parseMaybeAssign(),this.expect(k.colon),s.alternate=this.parseMaybeAssign(e),this.finishNode(s,"ConditionalExpression")}return n},Z.parseExprOps=function(e,t){var r=this.start,i=this.startLoc,n=this.parseMaybeUnary(t,!1);return this.checkExpressionErrors(t)||n.start===r&&"ArrowFunctionExpression"===n.type?n:this.parseExprOp(n,r,i,-1,e)},Z.parseExprOp=function(e,t,r,i,n){var s=this.type.binop;if(null!=s&&(!n||this.type!==k._in)&&s>i){var a=this.type===k.logicalOR||this.type===k.logicalAND,o=this.value;this.next();var c=this.start,h=this.startLoc,u=this.parseExprOp(this.parseMaybeUnary(null,!1),c,h,s,n),l=this.buildBinary(t,r,e,u,o,a);return this.parseExprOp(l,t,r,i,n)}return e},Z.buildBinary=function(e,t,r,i,n,s){var a=this.startNodeAt(e,t);return a.left=r,a.operator=n,a.right=i,this.finishNode(a,s?"LogicalExpression":"BinaryExpression")},Z.parseMaybeUnary=function(e,t){var r,i=this.start,n=this.startLoc;if(this.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))r=this.parseAwait(),t=!0;else if(this.type.prefix){var s=this.startNode(),a=this.type===k.incDec;s.operator=this.value,s.prefix=!0,this.next(),s.argument=this.parseMaybeUnary(null,!0),this.checkExpressionErrors(e,!0),a?this.checkLVal(s.argument):this.strict&&"delete"===s.operator&&"Identifier"===s.argument.type?this.raiseRecoverable(s.start,"Deleting local variable in strict mode"):t=!0,r=this.finishNode(s,a?"UpdateExpression":"UnaryExpression")}else{if(r=this.parseExprSubscripts(e),this.checkExpressionErrors(e))return r;for(;this.type.postfix&&!this.canInsertSemicolon();){var o=this.startNodeAt(i,n);o.operator=this.value,o.prefix=!1,o.argument=r,this.checkLVal(r),this.next(),r=this.finishNode(o,"UpdateExpression")}}return!t&&this.eat(k.starstar)?this.buildBinary(i,n,r,this.parseMaybeUnary(null,!1),"**",!1):r},Z.parseExprSubscripts=function(e){var t=this.start,r=this.startLoc,i=this.parseExprAtom(e),n="ArrowFunctionExpression"===i.type&&")"!==this.input.slice(this.lastTokStart,this.lastTokEnd);if(this.checkExpressionErrors(e)||n)return i;var s=this.parseSubscripts(i,t,r);return e&&"MemberExpression"===s.type&&(e.parenthesizedAssign>=s.start&&(e.parenthesizedAssign=-1),e.parenthesizedBind>=s.start&&(e.parenthesizedBind=-1)),s},Z.parseSubscripts=function(e,t,r,i){for(var n=this.options.ecmaVersion>=8&&"Identifier"===e.type&&"async"===e.name&&this.lastTokEnd===e.end&&!this.canInsertSemicolon()&&"async"===this.input.slice(e.start,e.end);;){var s=this.parseSubscript(e,t,r,i,n);if(s===e||"ArrowFunctionExpression"===s.type)return s;e=s}},Z.parseSubscript=function(e,t,r,i,n){var s=this.eat(k.bracketL);if(s||this.eat(k.dot)){var a=this.startNodeAt(t,r);a.object=e,a.property=s?this.parseExpression():this.parseIdent("never"!==this.options.allowReserved),a.computed=!!s,s&&this.expect(k.bracketR),e=this.finishNode(a,"MemberExpression")}else if(!i&&this.eat(k.parenL)){var o=new G,c=this.yieldPos,h=this.awaitPos,u=this.awaitIdentPos;this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0;var l=this.parseExprList(k.parenR,this.options.ecmaVersion>=8&&"Import"!==e.type,!1,o);if(n&&!this.canInsertSemicolon()&&this.eat(k.arrow))return this.checkPatternErrors(o,!1),this.checkYieldAwaitInDefaultParams(),this.awaitIdentPos>0&&this.raise(this.awaitIdentPos,"Cannot use 'await' as identifier inside an async function"),this.yieldPos=c,this.awaitPos=h,this.awaitIdentPos=u,this.parseArrowExpression(this.startNodeAt(t,r),l,!0);this.checkExpressionErrors(o,!0),this.yieldPos=c||this.yieldPos,this.awaitPos=h||this.awaitPos,this.awaitIdentPos=u||this.awaitIdentPos;var p=this.startNodeAt(t,r);if(p.callee=e,p.arguments=l,"Import"===p.callee.type){1!==p.arguments.length&&this.raise(p.start,"import() requires exactly one argument");var d=p.arguments[0];d&&"SpreadElement"===d.type&&this.raise(d.start,"... is not allowed in import()")}e=this.finishNode(p,"CallExpression")}else if(this.type===k.backQuote){var f=this.startNodeAt(t,r);f.tag=e,f.quasi=this.parseTemplate({isTagged:!0}),e=this.finishNode(f,"TaggedTemplateExpression")}return e},Z.parseExprAtom=function(e){this.type===k.slash&&this.readRegexp();var t,r=this.potentialArrowAt===this.start;switch(this.type){case k._super:return this.allowSuper||this.raise(this.start,"'super' keyword outside a method"),t=this.startNode(),this.next(),this.type!==k.parenL||this.allowDirectSuper||this.raise(t.start,"super() call outside constructor of a subclass"),this.type!==k.dot&&this.type!==k.bracketL&&this.type!==k.parenL&&this.unexpected(),this.finishNode(t,"Super");case k._this:return t=this.startNode(),this.next(),this.finishNode(t,"ThisExpression");case k.name:var i=this.start,n=this.startLoc,s=this.containsEsc,a=this.parseIdent(!1);if(this.options.ecmaVersion>=8&&!s&&"async"===a.name&&!this.canInsertSemicolon()&&this.eat(k._function))return this.parseFunction(this.startNodeAt(i,n),0,!1,!0);if(r&&!this.canInsertSemicolon()){if(this.eat(k.arrow))return this.parseArrowExpression(this.startNodeAt(i,n),[a],!1);if(this.options.ecmaVersion>=8&&"async"===a.name&&this.type===k.name&&!s)return a=this.parseIdent(!1),!this.canInsertSemicolon()&&this.eat(k.arrow)||this.unexpected(),this.parseArrowExpression(this.startNodeAt(i,n),[a],!0)}return a;case k.regexp:var o=this.value;return(t=this.parseLiteral(o.value)).regex={pattern:o.pattern,flags:o.flags},t;case k.num:case k.string:return this.parseLiteral(this.value);case k._null:case k._true:case k._false:return(t=this.startNode()).value=this.type===k._null?null:this.type===k._true,t.raw=this.type.keyword,this.next(),this.finishNode(t,"Literal");case k.parenL:var c=this.start,h=this.parseParenAndDistinguishExpression(r);return e&&(e.parenthesizedAssign<0&&!this.isSimpleAssignTarget(h)&&(e.parenthesizedAssign=c),e.parenthesizedBind<0&&(e.parenthesizedBind=c)),h;case k.bracketL:return t=this.startNode(),this.next(),t.elements=this.parseExprList(k.bracketR,!0,!0,e),this.finishNode(t,"ArrayExpression");case k.braceL:return this.parseObj(!1,e);case k._function:return t=this.startNode(),this.next(),this.parseFunction(t,0);case k._class:return this.parseClass(this.startNode(),!1);case k._new:return this.parseNew();case k.backQuote:return this.parseTemplate();case k._import:return this.options.ecmaVersion>10?this.parseDynamicImport():this.unexpected();default:this.unexpected()}},Z.parseDynamicImport=function(){var e=this.startNode();return this.next(),this.type!==k.parenL&&this.unexpected(),this.finishNode(e,"Import")},Z.parseLiteral=function(e){var t=this.startNode();return t.value=e,t.raw=this.input.slice(this.start,this.end),110===t.raw.charCodeAt(t.raw.length-1)&&(t.bigint=t.raw.slice(0,-1)),this.next(),this.finishNode(t,"Literal")},Z.parseParenExpression=function(){this.expect(k.parenL);var e=this.parseExpression();return this.expect(k.parenR),e},Z.parseParenAndDistinguishExpression=function(e){var t,r=this.start,i=this.startLoc,n=this.options.ecmaVersion>=8;if(this.options.ecmaVersion>=6){this.next();var s,a=this.start,o=this.startLoc,c=[],h=!0,u=!1,l=new 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this.parsePropertyName(a),!e&&!o&&this.options.ecmaVersion>=8&&!r&&this.isAsyncProp(a)?(i=!0,r=this.options.ecmaVersion>=9&&this.eat(k.star),this.parsePropertyName(a,t)):i=!1,this.parsePropertyValue(a,e,r,i,n,s,t,o),this.finishNode(a,"Property")},Z.parsePropertyValue=function(e,t,r,i,n,s,a,o){(r||i)&&this.type===k.colon&&this.unexpected(),this.eat(k.colon)?(e.value=t?this.parseMaybeDefault(this.start,this.startLoc):this.parseMaybeAssign(!1,a),e.kind="init"):this.options.ecmaVersion>=6&&this.type===k.parenL?(t&&this.unexpected(),e.kind="init",e.method=!0,e.value=this.parseMethod(r,i)):t||o||!(this.options.ecmaVersion>=5)||e.computed||"Identifier"!==e.key.type||"get"!==e.key.name&&"set"!==e.key.name||this.type===k.comma||this.type===k.braceR?this.options.ecmaVersion>=6&&!e.computed&&"Identifier"===e.key.type?((r||i)&&this.unexpected(),this.checkUnreserved(e.key),"await"!==e.key.name||this.awaitIdentPos||(this.awaitIdentPos=n),e.kind="init",t?e.value=this.parseMaybeDefault(n,s,e.key):this.type===k.eq&&a?(a.shorthandAssign<0&&(a.shorthandAssign=this.start),e.value=this.parseMaybeDefault(n,s,e.key)):e.value=e.key,e.shorthand=!0):this.unexpected():((r||i)&&this.unexpected(),e.kind=e.key.name,this.parsePropertyName(e),e.value=this.parseMethod(!1),e.value.params.length!==("get"===e.kind?0:1)?this.raiseRecoverable(e.value.start,"get"===e.kind?"getter 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this.initFunction(i),this.options.ecmaVersion>=6&&(i.generator=e),this.options.ecmaVersion>=8&&(i.async=!!t),this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,this.enterScope(64|D(t,i.generator)|(r?128:0)),this.expect(k.parenL),i.params=this.parseBindingList(k.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams(),this.parseFunctionBody(i,!1,!0),this.yieldPos=n,this.awaitPos=s,this.awaitIdentPos=a,this.finishNode(i,"FunctionExpression")},Z.parseArrowExpression=function(e,t,r){var i=this.yieldPos,n=this.awaitPos,s=this.awaitIdentPos;return this.enterScope(16|D(r,!1)),this.initFunction(e),this.options.ecmaVersion>=8&&(e.async=!!r),this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,e.params=this.toAssignableList(t,!0),this.parseFunctionBody(e,!0,!1),this.yieldPos=i,this.awaitPos=n,this.awaitIdentPos=s,this.finishNode(e,"ArrowFunctionExpression")},Z.parseFunctionBody=function(e,t,r){var i=this.strict,n=!1;if(t&&this.type!==k.braceL)e.body=this.parseMaybeAssign(),e.expression=!0,this.checkParams(e,!1);else{var s=this.options.ecmaVersion>=7&&!this.isSimpleParamList(e.params);i&&!s||(n=this.strictDirective(this.end))&&s&&this.raiseRecoverable(e.start,"Illegal 'use strict' directive in function with non-simple parameter list");var a=this.labels;this.labels=[],n&&(this.strict=!0),this.checkParams(e,!i&&!n&&!t&&!r&&this.isSimpleParamList(e.params)),e.body=this.parseBlock(!1),e.expression=!1,this.adaptDirectivePrologue(e.body.body),this.labels=a}this.exitScope(),this.strict&&e.id&&this.checkLVal(e.id,5),this.strict=i},Z.isSimpleParamList=function(e){for(var t=0,r=e;t<r.length;t+=1)if("Identifier"!==r[t].type)return!1;return!0},Z.checkParams=function(e,t){for(var r={},i=0,n=e.params;i<n.length;i+=1)this.checkLVal(n[i],1,t?null:r)},Z.parseExprList=function(e,t,r,i){for(var n=[],s=!0;!this.eat(e);){if(s)s=!1;else if(this.expect(k.comma),t&&this.afterTrailingComma(e))break;var a=void 0;r&&this.type===k.comma?a=null:this.type===k.ellipsis?(a=this.parseSpread(i),i&&this.type===k.comma&&i.trailingComma<0&&(i.trailingComma=this.start)):a=this.parseMaybeAssign(!1,i),n.push(a)}return n},Z.checkUnreserved=function(e){var t=e.start,r=e.end,i=e.name;this.inGenerator&&"yield"===i&&this.raiseRecoverable(t,"Cannot use 'yield' as identifier inside a generator"),this.inAsync&&"await"===i&&this.raiseRecoverable(t,"Cannot use 'await' as identifier inside an async function"),this.keywords.test(i)&&this.raise(t,"Unexpected keyword '"+i+"'"),this.options.ecmaVersion<6&&-1!==this.input.slice(t,r).indexOf("\\")||(this.strict?this.reservedWordsStrict:this.reservedWords).test(i)&&(this.inAsync||"await"!==i||this.raiseRecoverable(t,"Cannot use keyword 'await' outside an async function"),this.raiseRecoverable(t,"The keyword '"+i+"' is reserved"))},Z.parseIdent=function(e,t){var r=this.startNode();return this.type===k.name?r.name=this.value:this.type.keyword?(r.name=this.type.keyword,"class"!==r.name&&"function"!==r.name||this.lastTokEnd===this.lastTokStart+1&&46===this.input.charCodeAt(this.lastTokStart)||this.context.pop()):this.unexpected(),this.next(),this.finishNode(r,"Identifier"),e||(this.checkUnreserved(r),"await"!==r.name||this.awaitIdentPos||(this.awaitIdentPos=r.start)),r},Z.parseYield=function(e){this.yieldPos||(this.yieldPos=this.start);var t=this.startNode();return this.next(),this.type===k.semi||this.canInsertSemicolon()||this.type!==k.star&&!this.type.startsExpr?(t.delegate=!1,t.argument=null):(t.delegate=this.eat(k.star),t.argument=this.parseMaybeAssign(e)),this.finishNode(t,"YieldExpression")},Z.parseAwait=function(){this.awaitPos||(this.awaitPos=this.start);var e=this.startNode();return this.next(),e.argument=this.parseMaybeUnary(null,!0),this.finishNode(e,"AwaitExpression")};var $=U.prototype;$.raise=function(e,t){var r=M(this.input,e),i=new SyntaxError(t+=" 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o=this.scopeStack[a];if(o.lexical.indexOf(e)>-1&&!(32&o.flags&&o.lexical[0]===e)||!this.treatFunctionsAsVarInScope(o)&&o.functions.indexOf(e)>-1){i=!0;break}if(o.var.push(e),this.inModule&&1&o.flags&&delete this.undefinedExports[e],3&o.flags)break}i&&this.raiseRecoverable(r,"Identifier '"+e+"' has already been declared")},ee.checkLocalExport=function(e){-1===this.scopeStack[0].lexical.indexOf(e.name)&&-1===this.scopeStack[0].var.indexOf(e.name)&&(this.undefinedExports[e.name]=e)},ee.currentScope=function(){return this.scopeStack[this.scopeStack.length-1]},ee.currentVarScope=function(){for(var e=this.scopeStack.length-1;;e--){var t=this.scopeStack[e];if(3&t.flags)return t}},ee.currentThisScope=function(){for(var e=this.scopeStack.length-1;;e--){var t=this.scopeStack[e];if(3&t.flags&&!(16&t.flags))return t}};var re=function(e,t,r){this.type="",this.start=t,this.end=0,e.options.locations&&(this.loc=new 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e=this.context.pop();e===ae.b_stat&&"function"===this.curContext().token&&(e=this.context.pop()),this.exprAllowed=!e.isExpr}else this.exprAllowed=!0},k.braceL.updateContext=function(e){this.context.push(this.braceIsBlock(e)?ae.b_stat:ae.b_expr),this.exprAllowed=!0},k.dollarBraceL.updateContext=function(){this.context.push(ae.b_tmpl),this.exprAllowed=!0},k.parenL.updateContext=function(e){this.context.push(e===k._if||e===k._for||e===k._with||e===k._while?ae.p_stat:ae.p_expr),this.exprAllowed=!0},k.incDec.updateContext=function(){},k._function.updateContext=k._class.updateContext=function(e){!e.beforeExpr||e===k.semi||e===k._else||e===k._return&&w.test(this.input.slice(this.lastTokEnd,this.start))||(e===k.colon||e===k.braceL)&&this.curContext()===ae.b_stat?this.context.push(ae.f_stat):this.context.push(ae.f_expr),this.exprAllowed=!1},k.backQuote.updateContext=function(){this.curContext()===ae.q_tmpl?this.context.pop():this.context.push(ae.q_tmpl),this.exprAllowed=!1},k.star.updateContext=function(e){if(e===k._function){var 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de=U.prototype,fe=function(e){this.parser=e,this.validFlags="gim"+(e.options.ecmaVersion>=6?"uy":"")+(e.options.ecmaVersion>=9?"s":""),this.unicodeProperties=le[e.options.ecmaVersion>=11?11:e.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=[]};function me(e){return e<=65535?String.fromCharCode(e):(e-=65536,String.fromCharCode(55296+(e>>10),56320+(1023&e)))}function ge(e){return 36===e||e>=40&&e<=43||46===e||63===e||e>=91&&e<=94||e>=123&&e<=125}function ye(e){return e>=65&&e<=90||e>=97&&e<=122}function ve(e){return ye(e)||95===e}function xe(e){return ve(e)||be(e)}function be(e){return e>=48&&e<=57}function _e(e){return e>=48&&e<=57||e>=65&&e<=70||e>=97&&e<=102}function ke(e){return e>=65&&e<=70?e-65+10:e>=97&&e<=102?e-97+10:e-48}function we(e){return 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this.regexp_eatControlEscape(e)||this.regexp_eatCControlLetter(e)||this.regexp_eatZero(e)||this.regexp_eatHexEscapeSequence(e)||this.regexp_eatRegExpUnicodeEscapeSequence(e)||!e.switchU&&this.regexp_eatLegacyOctalEscapeSequence(e)||this.regexp_eatIdentityEscape(e)},de.regexp_eatCControlLetter=function(e){var t=e.pos;if(e.eat(99)){if(this.regexp_eatControlLetter(e))return!0;e.pos=t}return!1},de.regexp_eatZero=function(e){return 48===e.current()&&!be(e.lookahead())&&(e.lastIntValue=0,e.advance(),!0)},de.regexp_eatControlEscape=function(e){var t=e.current();return 116===t?(e.lastIntValue=9,e.advance(),!0):110===t?(e.lastIntValue=10,e.advance(),!0):118===t?(e.lastIntValue=11,e.advance(),!0):102===t?(e.lastIntValue=12,e.advance(),!0):114===t&&(e.lastIntValue=13,e.advance(),!0)},de.regexp_eatControlLetter=function(e){var t=e.current();return!!ye(t)&&(e.lastIntValue=t%32,e.advance(),!0)},de.regexp_eatRegExpUnicodeEscapeSequence=function(e){var t,r=e.pos;if(e.eat(117)){if(this.regexp_eatFixedHexDigits(e,4)){var i=e.lastIntValue;if(e.switchU&&i>=55296&&i<=56319){var n=e.pos;if(e.eat(92)&&e.eat(117)&&this.regexp_eatFixedHexDigits(e,4)){var s=e.lastIntValue;if(s>=56320&&s<=57343)return e.lastIntValue=1024*(i-55296)+(s-56320)+65536,!0}e.pos=n,e.lastIntValue=i}return!0}if(e.switchU&&e.eat(123)&&this.regexp_eatHexDigits(e)&&e.eat(125)&&(t=e.lastIntValue)>=0&&t<=1114111)return!0;e.switchU&&e.raise("Invalid unicode escape"),e.pos=r}return!1},de.regexp_eatIdentityEscape=function(e){if(e.switchU)return!!this.regexp_eatSyntaxCharacter(e)||!!e.eat(47)&&(e.lastIntValue=47,!0);var t=e.current();return!(99===t||e.switchN&&107===t||(e.lastIntValue=t,e.advance(),0))},de.regexp_eatDecimalEscape=function(e){e.lastIntValue=0;var t=e.current();if(t>=49&&t<=57){do{e.lastIntValue=10*e.lastIntValue+(t-48),e.advance()}while((t=e.current())>=48&&t<=57);return!0}return!1},de.regexp_eatCharacterClassEscape=function(e){var t=e.current();if(function(e){return 100===e||68===e||115===e||83===e||119===e||87===e}(t))return e.lastIntValue=-1,e.advance(),!0;if(e.switchU&&this.options.ecmaVersion>=9&&(80===t||112===t)){if(e.lastIntValue=-1,e.advance(),e.eat(123)&&this.regexp_eatUnicodePropertyValueExpression(e)&&e.eat(125))return!0;e.raise("Invalid property name")}return!1},de.regexp_eatUnicodePropertyValueExpression=function(e){var t=e.pos;if(this.regexp_eatUnicodePropertyName(e)&&e.eat(61)){var r=e.lastStringValue;if(this.regexp_eatUnicodePropertyValue(e))return this.regexp_validateUnicodePropertyNameAndValue(e,r,e.lastStringValue),!0}return e.pos=t,!!this.regexp_eatLoneUnicodePropertyNameOrValue(e)&&(this.regexp_validateUnicodePropertyNameOrValue(e,e.lastStringValue),!0)},de.regexp_validateUnicodePropertyNameAndValue=function(e,t,r){L(e.unicodeProperties.nonBinary,t)||e.raise("Invalid property name"),e.unicodeProperties.nonBinary[t].test(r)||e.raise("Invalid property value")},de.regexp_validateUnicodePropertyNameOrValue=function(e,t){e.unicodeProperties.binary.test(t)||e.raise("Invalid property name")},de.regexp_eatUnicodePropertyName=function(e){var t=0;for(e.lastStringValue="";ve(t=e.current());)e.lastStringValue+=me(t),e.advance();return""!==e.lastStringValue},de.regexp_eatUnicodePropertyValue=function(e){var t=0;for(e.lastStringValue="";xe(t=e.current());)e.lastStringValue+=me(t),e.advance();return""!==e.lastStringValue},de.regexp_eatLoneUnicodePropertyNameOrValue=function(e){return this.regexp_eatUnicodePropertyValue(e)},de.regexp_eatCharacterClass=function(e){if(e.eat(91)){if(e.eat(94),this.regexp_classRanges(e),e.eat(93))return!0;e.raise("Unterminated character class")}return!1},de.regexp_classRanges=function(e){for(;this.regexp_eatClassAtom(e);){var t=e.lastIntValue;if(e.eat(45)&&this.regexp_eatClassAtom(e)){var r=e.lastIntValue;!e.switchU||-1!==t&&-1!==r||e.raise("Invalid character class"),-1!==t&&-1!==r&&t>r&&e.raise("Range out of order in character class")}}},de.regexp_eatClassAtom=function(e){var t=e.pos;if(e.eat(92)){if(this.regexp_eatClassEscape(e))return!0;if(e.switchU){var r=e.current();(99===r||we(r))&&e.raise("Invalid class escape"),e.raise("Invalid escape")}e.pos=t}var i=e.current();return 93!==i&&(e.lastIntValue=i,e.advance(),!0)},de.regexp_eatClassEscape=function(e){var t=e.pos;if(e.eat(98))return e.lastIntValue=8,!0;if(e.switchU&&e.eat(45))return e.lastIntValue=45,!0;if(!e.switchU&&e.eat(99)){if(this.regexp_eatClassControlLetter(e))return!0;e.pos=t}return this.regexp_eatCharacterClassEscape(e)||this.regexp_eatCharacterEscape(e)},de.regexp_eatClassControlLetter=function(e){var t=e.current();return!(!be(t)&&95!==t||(e.lastIntValue=t%32,e.advance(),0))},de.regexp_eatHexEscapeSequence=function(e){var t=e.pos;if(e.eat(120)){if(this.regexp_eatFixedHexDigits(e,2))return!0;e.switchU&&e.raise("Invalid escape"),e.pos=t}return!1},de.regexp_eatDecimalDigits=function(e){var t=e.pos,r=0;for(e.lastIntValue=0;be(r=e.current());)e.lastIntValue=10*e.lastIntValue+(r-48),e.advance();return e.pos!==t},de.regexp_eatHexDigits=function(e){var t=e.pos,r=0;for(e.lastIntValue=0;_e(r=e.current());)e.lastIntValue=16*e.lastIntValue+ke(r),e.advance();return e.pos!==t},de.regexp_eatLegacyOctalEscapeSequence=function(e){if(this.regexp_eatOctalDigit(e)){var t=e.lastIntValue;if(this.regexp_eatOctalDigit(e)){var r=e.lastIntValue;e.lastIntValue=t<=3&&this.regexp_eatOctalDigit(e)?64*t+8*r+e.lastIntValue:8*t+r}else e.lastIntValue=t;return!0}return!1},de.regexp_eatOctalDigit=function(e){var t=e.current();return we(t)?(e.lastIntValue=t-48,e.advance(),!0):(e.lastIntValue=0,!1)},de.regexp_eatFixedHexDigits=function(e,t){var r=e.pos;e.lastIntValue=0;for(var i=0;i<t;++i){var n=e.current();if(!_e(n))return e.pos=r,!1;e.lastIntValue=16*e.lastIntValue+ke(n),e.advance()}return!0};var Se=function(e){this.type=e.type,this.value=e.value,this.start=e.start,this.end=e.end,e.options.locations&&(this.loc=new O(e,e.startLoc,e.endLoc)),e.options.ranges&&(this.range=[e.start,e.end])},Ee=U.prototype;function Ce(e){return e<=65535?String.fromCharCode(e):(e-=65536,String.fromCharCode(55296+(e>>10),56320+(1023&e)))}Ee.next=function(){this.options.onToken&&this.options.onToken(new Se(this)),this.lastTokEnd=this.end,this.lastTokStart=this.start,this.lastTokEndLoc=this.endLoc,this.lastTokStartLoc=this.startLoc,this.nextToken()},Ee.getToken=function(){return this.next(),new Se(this)},"undefined"!=typeof Symbol&&(Ee[Symbol.iterator]=function(){var e=this;return{next:function(){var t=e.getToken();return{done:t.type===k.eof,value:t}}}}),Ee.curContext=function(){return this.context[this.context.length-1]},Ee.nextToken=function(){var e=this.curContext();return e&&e.preserveSpace||this.skipSpace(),this.start=this.pos,this.options.locations&&(this.startLoc=this.curPosition()),this.pos>=this.input.length?this.finishToken(k.eof):e.override?e.override(this):void this.readToken(this.fullCharCodeAtPos())},Ee.readToken=function(e){return f(e,this.options.ecmaVersion>=6)||92===e?this.readWord():this.getTokenFromCode(e)},Ee.fullCharCodeAtPos=function(){var e=this.input.charCodeAt(this.pos);return e<=55295||e>=57344?e:(e<<10)+this.input.charCodeAt(this.pos+1)-56613888},Ee.skipBlockComment=function(){var e,t=this.options.onComment&&this.curPosition(),r=this.pos,i=this.input.indexOf("*/",this.pos+=2);if(-1===i&&this.raise(this.pos-2,"Unterminated comment"),this.pos=i+2,this.options.locations)for(S.lastIndex=r;(e=S.exec(this.input))&&e.index<this.pos;)++this.curLine,this.lineStart=e.index+e[0].length;this.options.onComment&&this.options.onComment(!0,this.input.slice(r+2,i),r,this.pos,t,this.curPosition())},Ee.skipLineComment=function(e){for(var t=this.pos,r=this.options.onComment&&this.curPosition(),i=this.input.charCodeAt(this.pos+=e);this.pos<this.input.length&&!E(i);)i=this.input.charCodeAt(++this.pos);this.options.onComment&&this.options.onComment(!1,this.input.slice(t+e,this.pos),t,this.pos,r,this.curPosition())},Ee.skipSpace=function(){e:for(;this.pos<this.input.length;){var e=this.input.charCodeAt(this.pos);switch(e){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 e}break;default:if(!(e>8&&e<14||e>=5760&&C.test(String.fromCharCode(e))))break e;++this.pos}}},Ee.finishToken=function(e,t){this.end=this.pos,this.options.locations&&(this.endLoc=this.curPosition());var r=this.type;this.type=e,this.value=t,this.updateContext(r)},Ee.readToken_dot=function(){var e=this.input.charCodeAt(this.pos+1);if(e>=48&&e<=57)return this.readNumber(!0);var t=this.input.charCodeAt(this.pos+2);return this.options.ecmaVersion>=6&&46===e&&46===t?(this.pos+=3,this.finishToken(k.ellipsis)):(++this.pos,this.finishToken(k.dot))},Ee.readToken_slash=function(){var e=this.input.charCodeAt(this.pos+1);return this.exprAllowed?(++this.pos,this.readRegexp()):61===e?this.finishOp(k.assign,2):this.finishOp(k.slash,1)},Ee.readToken_mult_modulo_exp=function(e){var t=this.input.charCodeAt(this.pos+1),r=1,i=42===e?k.star:k.modulo;return this.options.ecmaVersion>=7&&42===e&&42===t&&(++r,i=k.starstar,t=this.input.charCodeAt(this.pos+2)),61===t?this.finishOp(k.assign,r+1):this.finishOp(i,r)},Ee.readToken_pipe_amp=function(e){var t=this.input.charCodeAt(this.pos+1);return t===e?this.finishOp(124===e?k.logicalOR:k.logicalAND,2):61===t?this.finishOp(k.assign,2):this.finishOp(124===e?k.bitwiseOR:k.bitwiseAND,1)},Ee.readToken_caret=function(){return 61===this.input.charCodeAt(this.pos+1)?this.finishOp(k.assign,2):this.finishOp(k.bitwiseXOR,1)},Ee.readToken_plus_min=function(e){var t=this.input.charCodeAt(this.pos+1);return t===e?45!==t||this.inModule||62!==this.input.charCodeAt(this.pos+2)||0!==this.lastTokEnd&&!w.test(this.input.slice(this.lastTokEnd,this.pos))?this.finishOp(k.incDec,2):(this.skipLineComment(3),this.skipSpace(),this.nextToken()):61===t?this.finishOp(k.assign,2):this.finishOp(k.plusMin,1)},Ee.readToken_lt_gt=function(e){var t=this.input.charCodeAt(this.pos+1),r=1;return t===e?(r=62===e&&62===this.input.charCodeAt(this.pos+2)?3:2,61===this.input.charCodeAt(this.pos+r)?this.finishOp(k.assign,r+1):this.finishOp(k.bitShift,r)):33!==t||60!==e||this.inModule||45!==this.input.charCodeAt(this.pos+2)||45!==this.input.charCodeAt(this.pos+3)?(61===t&&(r=2),this.finishOp(k.relational,r)):(this.skipLineComment(4),this.skipSpace(),this.nextToken())},Ee.readToken_eq_excl=function(e){var t=this.input.charCodeAt(this.pos+1);return 61===t?this.finishOp(k.equality,61===this.input.charCodeAt(this.pos+2)?3:2):61===e&&62===t&&this.options.ecmaVersion>=6?(this.pos+=2,this.finishToken(k.arrow)):this.finishOp(61===e?k.eq:k.prefix,1)},Ee.getTokenFromCode=function(e){switch(e){case 46:return this.readToken_dot();case 40:return++this.pos,this.finishToken(k.parenL);case 41:return++this.pos,this.finishToken(k.parenR);case 59:return++this.pos,this.finishToken(k.semi);case 44:return++this.pos,this.finishToken(k.comma);case 91:return++this.pos,this.finishToken(k.bracketL);case 93:return++this.pos,this.finishToken(k.bracketR);case 123:return++this.pos,this.finishToken(k.braceL);case 125:return++this.pos,this.finishToken(k.braceR);case 58:return++this.pos,this.finishToken(k.colon);case 63:return++this.pos,this.finishToken(k.question);case 96:if(this.options.ecmaVersion<6)break;return++this.pos,this.finishToken(k.backQuote);case 48:var t=this.input.charCodeAt(this.pos+1);if(120===t||88===t)return this.readRadixNumber(16);if(this.options.ecmaVersion>=6){if(111===t||79===t)return this.readRadixNumber(8);if(98===t||66===t)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(e);case 47:return this.readToken_slash();case 37:case 42:return this.readToken_mult_modulo_exp(e);case 124:case 38:return this.readToken_pipe_amp(e);case 94:return this.readToken_caret();case 43:case 45:return this.readToken_plus_min(e);case 60:case 62:return this.readToken_lt_gt(e);case 61:case 33:return this.readToken_eq_excl(e);case 126:return this.finishOp(k.prefix,1)}this.raise(this.pos,"Unexpected character '"+Ce(e)+"'")},Ee.finishOp=function(e,t){var r=this.input.slice(this.pos,this.pos+t);return this.pos+=t,this.finishToken(e,r)},Ee.readRegexp=function(){for(var e,t,r=this.pos;;){this.pos>=this.input.length&&this.raise(r,"Unterminated regular expression");var i=this.input.charAt(this.pos);if(w.test(i)&&this.raise(r,"Unterminated regular expression"),e)e=!1;else{if("["===i)t=!0;else if("]"===i&&t)t=!1;else if("/"===i&&!t)break;e="\\"===i}++this.pos}var n=this.input.slice(r,this.pos);++this.pos;var s=this.pos,a=this.readWord1();this.containsEsc&&this.unexpected(s);var o=this.regexpState||(this.regexpState=new fe(this));o.reset(r,n,a),this.validateRegExpFlags(o),this.validateRegExpPattern(o);var c=null;try{c=new RegExp(n,a)}catch(h){}return this.finishToken(k.regexp,{pattern:n,flags:a,value:c})},Ee.readInt=function(e,t){for(var r=this.pos,i=0,n=0,s=null==t?1/0:t;n<s;++n){var a,o=this.input.charCodeAt(this.pos);if((a=o>=97?o-97+10:o>=65?o-65+10:o>=48&&o<=57?o-48:1/0)>=e)break;++this.pos,i=i*e+a}return this.pos===r||null!=t&&this.pos-r!==t?null:i},Ee.readRadixNumber=function(e){var t=this.pos;this.pos+=2;var r=this.readInt(e);return null==r&&this.raise(this.start+2,"Expected number in radix "+e),this.options.ecmaVersion>=11&&110===this.input.charCodeAt(this.pos)?(r="undefined"!=typeof BigInt?BigInt(this.input.slice(t,this.pos)):null,++this.pos):f(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number"),this.finishToken(k.num,r)},Ee.readNumber=function(e){var t=this.pos;e||null!==this.readInt(10)||this.raise(t,"Invalid number");var r=this.pos-t>=2&&48===this.input.charCodeAt(t);r&&this.strict&&this.raise(t,"Invalid number"),r&&/[89]/.test(this.input.slice(t,this.pos))&&(r=!1);var i=this.input.charCodeAt(this.pos);if(!r&&!e&&this.options.ecmaVersion>=11&&110===i){var n=this.input.slice(t,this.pos),s="undefined"!=typeof BigInt?BigInt(n):null;return++this.pos,f(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number"),this.finishToken(k.num,s)}46!==i||r||(++this.pos,this.readInt(10),i=this.input.charCodeAt(this.pos)),69!==i&&101!==i||r||(43!==(i=this.input.charCodeAt(++this.pos))&&45!==i||++this.pos,null===this.readInt(10)&&this.raise(t,"Invalid number")),f(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number");var a=this.input.slice(t,this.pos),o=r?parseInt(a,8):parseFloat(a);return this.finishToken(k.num,o)},Ee.readCodePoint=function(){var e;if(123===this.input.charCodeAt(this.pos)){this.options.ecmaVersion<6&&this.unexpected();var t=++this.pos;e=this.readHexChar(this.input.indexOf("}",this.pos)-this.pos),++this.pos,e>1114111&&this.invalidStringToken(t,"Code point out of bounds")}else e=this.readHexChar(4);return e},Ee.readString=function(e){for(var t="",r=++this.pos;;){this.pos>=this.input.length&&this.raise(this.start,"Unterminated string constant");var i=this.input.charCodeAt(this.pos);if(i===e)break;92===i?(t+=this.input.slice(r,this.pos),t+=this.readEscapedChar(!1),r=this.pos):(E(i,this.options.ecmaVersion>=10)&&this.raise(this.start,"Unterminated string constant"),++this.pos)}return t+=this.input.slice(r,this.pos++),this.finishToken(k.string,t)};var Ie={};Ee.tryReadTemplateToken=function(){this.inTemplateElement=!0;try{this.readTmplToken()}catch(e){if(e!==Ie)throw e;this.readInvalidTemplateToken()}this.inTemplateElement=!1},Ee.invalidStringToken=function(e,t){if(this.inTemplateElement&&this.options.ecmaVersion>=9)throw Ie;this.raise(e,t)},Ee.readTmplToken=function(){for(var e="",t=this.pos;;){this.pos>=this.input.length&&this.raise(this.start,"Unterminated template");var r=this.input.charCodeAt(this.pos);if(96===r||36===r&&123===this.input.charCodeAt(this.pos+1))return this.pos!==this.start||this.type!==k.template&&this.type!==k.invalidTemplate?(e+=this.input.slice(t,this.pos),this.finishToken(k.template,e)):36===r?(this.pos+=2,this.finishToken(k.dollarBraceL)):(++this.pos,this.finishToken(k.backQuote));if(92===r)e+=this.input.slice(t,this.pos),e+=this.readEscapedChar(!0),t=this.pos;else if(E(r)){switch(e+=this.input.slice(t,this.pos),++this.pos,r){case 13:10===this.input.charCodeAt(this.pos)&&++this.pos;case 10:e+="\n";break;default:e+=String.fromCharCode(r)}this.options.locations&&(++this.curLine,this.lineStart=this.pos),t=this.pos}else++this.pos}},Ee.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(k.invalidTemplate,this.input.slice(this.start,this.pos))}this.raise(this.start,"Unterminated template")},Ee.readEscapedChar=function(e){var t=this.input.charCodeAt(++this.pos);switch(++this.pos,t){case 110:return"\n";case 114:return"\r";case 120:return String.fromCharCode(this.readHexChar(2));case 117:return Ce(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(t>=48&&t<=55){var r=this.input.substr(this.pos-1,3).match(/^[0-7]+/)[0],i=parseInt(r,8);return i>255&&(r=r.slice(0,-1),i=parseInt(r,8)),this.pos+=r.length-1,t=this.input.charCodeAt(this.pos),"0"===r&&56!==t&&57!==t||!this.strict&&!e||this.invalidStringToken(this.pos-1-r.length,e?"Octal literal in template string":"Octal literal in strict mode"),String.fromCharCode(i)}return E(t)?"":String.fromCharCode(t)}},Ee.readHexChar=function(e){var t=this.pos,r=this.readInt(16,e);return null===r&&this.invalidStringToken(t,"Bad character escape sequence"),r},Ee.readWord1=function(){this.containsEsc=!1;for(var e="",t=!0,r=this.pos,i=this.options.ecmaVersion>=6;this.pos<this.input.length;){var n=this.fullCharCodeAtPos();if(m(n,i))this.pos+=n<=65535?1:2;else{if(92!==n)break;this.containsEsc=!0,e+=this.input.slice(r,this.pos);var s=this.pos;117!==this.input.charCodeAt(++this.pos)&&this.invalidStringToken(this.pos,"Expecting Unicode escape sequence \\uXXXX"),++this.pos;var a=this.readCodePoint();(t?f:m)(a,i)||this.invalidStringToken(s,"Invalid Unicode escape"),e+=Ce(a),r=this.pos}t=!1}return e+this.input.slice(r,this.pos)},Ee.readWord=function(){var e=this.readWord1(),t=k.name;return this.keywords.test(e)&&(this.containsEsc&&this.raiseRecoverable(this.start,"Escape sequence in keyword "+e),t=b[e]),this.finishToken(t,e)};var Ae="6.4.0";function Pe(e,t){return U.parse(e,t)}function Te(e,t,r){return U.parseExpressionAt(e,t,r)}function Le(e,t){return U.tokenizer(e,t)}U.acorn={Parser:U,version:Ae,defaultOptions:R,Position:B,SourceLocation:O,getLineInfo:M,Node:re,TokenType:g,tokTypes:k,keywordTypes:b,TokContext:se,tokContexts:ae,isIdentifierChar:m,isIdentifierStart:f,Token:Se,isNewLine:E,lineBreak:w,lineBreakG:S,nonASCIIwhitespace:C}}}]);