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t=[],e=!0;if(this.type===E.name){var i=this.startNode();if(i.local=this.parseIdent(),this.checkLVal(i.local,2),t.push(this.finishNode(i,"ImportDefaultSpecifier")),!this.eat(E.comma))return t}if(this.type===E.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(E.braceL);!this.eat(E.braceR);){if(e)e=!1;else if(this.expect(E.comma),this.afterTrailingComma(E.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},G.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)},G.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 tt=X.prototype;tt.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,"Can not 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 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);break;case"MemberExpression":if(!e)break;default:this.raise(t.start,"Assigning to rvalue")}else i&&this.checkPatternErrors(i,!0);return t},tt.toAssignableList=function(t,e){for(var i=t.length,s=0;s<i;s++){var r=t[s];r&&this.toAssignable(r,e)}if(i){var n=t[i-1];6===this.options.ecmaVersion&&e&&n&&"RestElement"===n.type&&"Identifier"!==n.argument.type&&this.unexpected(n.argument.start)}return t},tt.parseSpread=function(t){var e=this.startNode();return this.next(),e.argument=this.parseMaybeAssign(!1,t),this.finishNode(e,"SpreadElement")},tt.parseRestBinding=function(){var t=this.startNode();return this.next(),6===this.options.ecmaVersion&&this.type!==E.name&&this.unexpected(),t.argument=this.parseBindingAtom(),this.finishNode(t,"RestElement")},tt.parseBindingAtom=function(){if(this.options.ecmaVersion>=6)switch(this.type){case E.bracketL:var t=this.startNode();return this.next(),t.elements=this.parseBindingList(E.bracketR,!0,!0),this.finishNode(t,"ArrayPattern");case E.braceL:return this.parseObj(!0)}return this.parseIdent()},tt.parseBindingList=function(t,e,i){for(var s=[],r=!0;!this.eat(t);)if(r?r=!1:this.expect(E.comma),e&&this.type===E.comma)s.push(null);else{if(i&&this.afterTrailingComma(t))break;if(this.type===E.ellipsis){var n=this.parseRestBinding();this.parseBindingListItem(n),s.push(n),this.type===E.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},tt.parseBindingListItem=function(t){return t},tt.parseMaybeDefault=function(t,e,i){if(i=i||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(E.eq))return i;var s=this.startNodeAt(t,e);return s.left=i,s.right=this.parseMaybeAssign(),this.finishNode(s,"AssignmentPattern")},tt.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&&(O(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){var n=r[s];this.checkLVal(n,e,i)}break;case"Property":this.checkLVal(t.value,e,i);break;case"ArrayPattern":for(var a=0,o=t.elements;a<o.length;a+=1){var p=o[a];p&&this.checkLVal(p,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 et=X.prototype;et.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];if(a)("init"===n?this.strict&&a.init||a.get||a.set:a.init||a[n])&&this.raiseRecoverable(r.start,"Redefinition of property");else a=e[s]={init:!1,get:!1,set:!1};a[n]=!0}}},et.parseExpression=function(t,e){var i=this.start,s=this.startLoc,r=this.parseMaybeAssign(t,e);if(this.type===E.comma){var n=this.startNodeAt(i,s);for(n.expressions=[r];this.eat(E.comma);)n.expressions.push(this.parseMaybeAssign(t,e));return this.finishNode(n,"SequenceExpression")}return r},et.parseMaybeAssign=function(t,e,i){if(this.isContextual("yield")){if(this.inGenerator)return this.parseYield();this.exprAllowed=!1}var s=!1,r=-1,n=-1,a=-1;e?(r=e.parenthesizedAssign,n=e.trailingComma,a=e.shorthandAssign,e.parenthesizedAssign=e.trailingComma=e.shorthandAssign=-1):(e=new H,s=!0);var o=this.start,p=this.startLoc;this.type!==E.parenL&&this.type!==E.name||(this.potentialArrowAt=this.start);var h=this.parseMaybeConditional(t,e);if(i&&(h=i.call(this,h,o,p)),this.type.isAssign){var c=this.startNodeAt(o,p);return c.operator=this.value,c.left=this.type===E.eq?this.toAssignable(h,!1,e):h,s||H.call(e),e.shorthandAssign=-1,this.checkLVal(h),this.next(),c.right=this.parseMaybeAssign(t),this.finishNode(c,"AssignmentExpression")}return s&&this.checkExpressionErrors(e,!0),r>-1&&(e.parenthesizedAssign=r),n>-1&&(e.trailingComma=n),a>-1&&(e.shorthandAssign=a),h},et.parseMaybeConditional=function(t,e){var i=this.start,s=this.startLoc,r=this.parseExprOps(t,e);if(this.checkExpressionErrors(e))return r;if(this.eat(E.question)){var n=this.startNodeAt(i,s);return n.test=r,n.consequent=this.parseMaybeAssign(),this.expect(E.colon),n.alternate=this.parseMaybeAssign(t),this.finishNode(n,"ConditionalExpression")}return r},et.parseExprOps=function(t,e){var i=this.start,s=this.startLoc,r=this.parseMaybeUnary(e,!1);return this.checkExpressionErrors(e)||r.start===i&&"ArrowFunctionExpression"===r.type?r:this.parseExprOp(r,i,s,-1,t)},et.parseExprOp=function(t,e,i,s,r){var n=this.type.binop;if(null!=n&&(!r||this.type!==E._in)&&n>s){var a=this.type===E.logicalOR||this.type===E.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},et.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")},et.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===E.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 local variable in strict mode"):e=!0,i=this.finishNode(n,a?"UpdateExpression":"UnaryExpression")}else{if(i=this.parseExprSubscripts(t),this.checkExpressionErrors(t))return i;for(;this.type.postfix&&!this.canInsertSemicolon();){var o=this.startNodeAt(s,r);o.operator=this.value,o.prefix=!1,o.argument=i,this.checkLVal(i),this.next(),i=this.finishNode(o,"UpdateExpression")}}return!e&&this.eat(E.starstar)?this.buildBinary(s,r,i,this.parseMaybeUnary(null,!1),"**",!1):i},et.parseExprSubscripts=function(t){var e=this.start,i=this.startLoc,s=this.parseExprAtom(t),r="ArrowFunctionExpression"===s.type&&")"!==this.input.slice(this.lastTokStart,this.lastTokEnd);if(this.checkExpressionErrors(t)||r)return s;var n=this.parseSubscripts(s,e,i);return t&&"MemberExpression"===n.type&&(t.parenthesizedAssign>=n.start&&(t.parenthesizedAssign=-1),t.parenthesizedBind>=n.start&&(t.parenthesizedBind=-1)),n},et.parseSubscripts=function(t,e,i,s){for(var 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),n=void 0;;)if((n=this.eat(E.bracketL))||this.eat(E.dot)){var a=this.startNodeAt(e,i);a.object=t,a.property=n?this.parseExpression():this.parseIdent(!0),a.computed=!!n,n&&this.expect(E.bracketR),t=this.finishNode(a,"MemberExpression")}else if(!s&&this.eat(E.parenL)){var o=new H,p=this.yieldPos,h=this.awaitPos;this.yieldPos=0,this.awaitPos=0;var c=this.parseExprList(E.parenR,this.options.ecmaVersion>=8,!1,o);if(r&&!this.canInsertSemicolon()&&this.eat(E.arrow))return this.checkPatternErrors(o,!1),this.checkYieldAwaitInDefaultParams(),this.yieldPos=p,this.awaitPos=h,this.parseArrowExpression(this.startNodeAt(e,i),c,!0);this.checkExpressionErrors(o,!0),this.yieldPos=p||this.yieldPos,this.awaitPos=h||this.awaitPos;var l=this.startNodeAt(e,i);l.callee=t,l.arguments=c,t=this.finishNode(l,"CallExpression")}else{if(this.type!==E.backQuote)return t;var u=this.startNodeAt(e,i);u.tag=t,u.quasi=this.parseTemplate({isTagged:!0}),t=this.finishNode(u,"TaggedTemplateExpression")}},et.parseExprAtom=function(t){var e,i=this.potentialArrowAt===this.start;switch(this.type){case E._super:return this.inFunction||this.raise(this.start,"'super' outside of function or class"),e=this.startNode(),this.next(),this.type!==E.dot&&this.type!==E.bracketL&&this.type!==E.parenL&&this.unexpected(),this.finishNode(e,"Super");case E._this:return e=this.startNode(),this.next(),this.finishNode(e,"ThisExpression");case E.name:var s=this.start,r=this.startLoc,n=this.containsEsc,a=this.parseIdent(this.type!==E.name);if(this.options.ecmaVersion>=8&&!n&&"async"===a.name&&!this.canInsertSemicolon()&&this.eat(E._function))return this.parseFunction(this.startNodeAt(s,r),0,!1,!0);if(i&&!this.canInsertSemicolon()){if(this.eat(E.arrow))return this.parseArrowExpression(this.startNodeAt(s,r),[a],!1);if(this.options.ecmaVersion>=8&&"async"===a.name&&this.type===E.name&&!n)return a=this.parseIdent(),!this.canInsertSemicolon()&&this.eat(E.arrow)||this.unexpected(),this.parseArrowExpression(this.startNodeAt(s,r),[a],!0)}return a;case E.regexp:var o=this.value;return(e=this.parseLiteral(o.value)).regex={pattern:o.pattern,flags:o.flags},e;case E.num:case E.string:return this.parseLiteral(this.value);case E._null:case E._true:case E._false:return(e=this.startNode()).value=this.type===E._null?null:this.type===E._true,e.raw=this.type.keyword,this.next(),this.finishNode(e,"Literal");case E.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 E.bracketL:return e=this.startNode(),this.next(),e.elements=this.parseExprList(E.bracketR,!0,!0,t),this.finishNode(e,"ArrayExpression");case E.braceL:return this.parseObj(!1,t);case E._function:return e=this.startNode(),this.next(),this.parseFunction(e,0);case E._class:return this.parseClass(this.startNode(),!1);case E._new:return this.parseNew();case E.backQuote:return this.parseTemplate();default:this.unexpected()}},et.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")},et.parseParenExpression=function(){this.expect(E.parenL);var t=this.parseExpression();return this.expect(E.parenR),t},et.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 H,u=this.yieldPos,d=this.awaitPos;for(this.yieldPos=0,this.awaitPos=0;this.type!==E.parenR;){if(h?h=!1:this.expect(E.comma),r&&this.afterTrailingComma(E.parenR,!0)){c=!0;break}if(this.type===E.ellipsis){n=this.start,p.push(this.parseParenItem(this.parseRestBinding())),this.type===E.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(E.parenR),t&&!this.canInsertSemicolon()&&this.eat(E.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 y=this.startNodeAt(i,s);return y.expression=e,this.finishNode(y,"ParenthesizedExpression")}return e},et.parseParenItem=function(t){return t},et.parseParenArrowList=function(t,e,i){return this.parseArrowExpression(this.startNodeAt(t,e),i)};var it=[];et.parseNew=function(){var t=this.startNode(),e=this.parseIdent(!0);if(this.options.ecmaVersion>=6&&this.eat(E.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,r=this.startLoc;return t.callee=this.parseSubscripts(this.parseExprAtom(),s,r,!0),this.eat(E.parenL)?t.arguments=this.parseExprList(E.parenR,this.options.ecmaVersion>=8,!1):t.arguments=it,this.finishNode(t,"NewExpression")},et.parseTemplateElement=function(t){var e=t.isTagged,i=this.startNode();return this.type===E.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===E.backQuote,this.finishNode(i,"TemplateElement")},et.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===E.eof&&this.raise(this.pos,"Unterminated template literal"),this.expect(E.dollarBraceL),i.expressions.push(this.parseExpression()),this.expect(E.braceR),i.quasis.push(s=this.parseTemplateElement({isTagged:e}));return this.next(),this.finishNode(i,"TemplateLiteral")},et.isAsyncProp=function(t){return!t.computed&&"Identifier"===t.key.type&&"async"===t.key.name&&(this.type===E.name||this.type===E.num||this.type===E.string||this.type===E.bracketL||this.type.keyword||this.options.ecmaVersion>=9&&this.type===E.star)&&!A.test(this.input.slice(this.lastTokEnd,this.start))},et.parseObj=function(t,e){var i=this.startNode(),s=!0,r={};for(i.properties=[],this.next();!this.eat(E.braceR);){if(s)s=!1;else if(this.expect(E.comma),this.afterTrailingComma(E.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")},et.parseProperty=function(t,e){var i,s,r,n,a=this.startNode();if(this.options.ecmaVersion>=9&&this.eat(E.ellipsis))return t?(a.argument=this.parseIdent(!1),this.type===E.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.finishNode(a,"RestElement")):(this.type===E.parenL&&e&&(e.parenthesizedAssign<0&&(e.parenthesizedAssign=this.start),e.parenthesizedBind<0&&(e.parenthesizedBind=this.start)),a.argument=this.parseMaybeAssign(!1,e),this.type===E.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(E.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(E.star),this.parsePropertyName(a,e)):s=!1,this.parsePropertyValue(a,t,i,s,r,n,e,o),this.finishNode(a,"Property")},et.parsePropertyValue=function(t,e,i,s,r,n,a,o){if((i||s)&&this.type===E.colon&&this.unexpected(),this.eat(E.colon))t.value=e?this.parseMaybeDefault(this.start,this.startLoc):this.parseMaybeAssign(!1,a),t.kind="init";else if(this.options.ecmaVersion>=6&&this.type===E.parenL)e&&this.unexpected(),t.kind="init",t.method=!0,t.value=this.parseMethod(i,s);else if(e||o||!(this.options.ecmaVersion>=5)||t.computed||"Identifier"!==t.key.type||"get"!==t.key.name&&"set"!==t.key.name||this.type===E.comma||this.type===E.braceR)this.options.ecmaVersion>=6&&!t.computed&&"Identifier"===t.key.type?(this.checkUnreserved(t.key),t.kind="init",e?t.value=this.parseMaybeDefault(r,n,t.key):this.type===E.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();else{(i||s)&&this.unexpected(),t.kind=t.key.name,this.parsePropertyName(t),t.value=this.parseMethod(!1);var p="get"===t.kind?0:1;if(t.value.params.length!==p){var h=t.value.start;"get"===t.kind?this.raiseRecoverable(h,"getter should have no params"):this.raiseRecoverable(h,"setter should have exactly one param")}else"set"===t.kind&&"RestElement"===t.value.params[0].type&&this.raiseRecoverable(t.value.params[0].start,"Setter cannot use rest params")}},et.parsePropertyName=function(t){if(this.options.ecmaVersion>=6){if(this.eat(E.bracketL))return t.computed=!0,t.key=this.parseMaybeAssign(),this.expect(E.bracketR),t.key;t.computed=!1}return t.key=this.type===E.num||this.type===E.string?this.parseExprAtom():this.parseIdent(!0)},et.initFunction=function(t){t.id=null,this.options.ecmaVersion>=6&&(t.generator=t.expression=!1),this.options.ecmaVersion>=8&&(t.async=!1)},et.parseMethod=function(t,e){var i=this.startNode(),s=this.yieldPos,r=this.awaitPos;return this.initFunction(i),this.options.ecmaVersion>=6&&(i.generator=t),this.options.ecmaVersion>=8&&(i.async=!!e),this.yieldPos=0,this.awaitPos=0,this.enterScope(U(e,i.generator)),this.expect(E.parenL),i.params=this.parseBindingList(E.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams(),this.parseFunctionBody(i,!1),this.yieldPos=s,this.awaitPos=r,this.finishNode(i,"FunctionExpression")},et.parseArrowExpression=function(t,e,i){var s=this.yieldPos,r=this.awaitPos;return this.enterScope(16|U(i,!1)),this.initFunction(t),this.options.ecmaVersion>=8&&(t.async=!!i),this.yieldPos=0,this.awaitPos=0,t.params=this.toAssignableList(e,!0),this.parseFunctionBody(t,!0),this.yieldPos=s,this.awaitPos=r,this.finishNode(t,"ArrowFunctionExpression")},et.parseFunctionBody=function(t,e){var i=e&&this.type!==E.braceL,s=this.strict,r=!1;if(i)t.body=this.parseMaybeAssign(),t.expression=!0,this.checkParams(t,!1);else{var n=this.options.ecmaVersion>=7&&!this.isSimpleParamList(t.params);s&&!n||(r=this.strictDirective(this.end))&&n&&this.raiseRecoverable(t.start,"Illegal 'use strict' directive in function with non-simple parameter list");var a=this.labels;this.labels=[],r&&(this.strict=!0),this.checkParams(t,!s&&!r&&!e&&this.isSimpleParamList(t.params)),t.body=this.parseBlock(!1),t.expression=!1,this.adaptDirectivePrologue(t.body.body),this.labels=a}this.exitScope(),this.strict&&t.id&&this.checkLVal(t.id,5),this.strict=s},et.isSimpleParamList=function(t){for(var e=0,i=t;e<i.length;e+=1){if("Identifier"!==i[e].type)return!1}return!0},et.checkParams=function(t,e){for(var i={},s=0,r=t.params;s<r.length;s+=1){var n=r[s];this.checkLVal(n,1,e?null:i)}},et.parseExprList=function(t,e,i,s){for(var r=[],n=!0;!this.eat(t);){if(n)n=!1;else if(this.expect(E.comma),e&&this.afterTrailingComma(t))break;var a=void 0;i&&this.type===E.comma?a=null:this.type===E.ellipsis?(a=this.parseSpread(s),s&&this.type===E.comma&&s.trailingComma<0&&(s.trailingComma=this.start)):a=this.parseMaybeAssign(!1,s),r.push(a)}return r},et.checkUnreserved=function(t){var e=t.start,i=t.end,s=t.name;(this.inGenerator&&"yield"===s&&this.raiseRecoverable(e,"Can not use 'yield' as identifier inside a generator"),this.inAsync&&"await"===s&&this.raiseRecoverable(e,"Can not use 'await' as identifier inside an async function"),this.keywords.test(s)&&this.raise(e,"Unexpected keyword '"+s+"'"),this.options.ecmaVersion<6&&-1!==this.input.slice(e,i).indexOf("\\"))||(this.strict?this.reservedWordsStrict:this.reservedWords).test(s)&&(this.inAsync||"await"!==s||this.raiseRecoverable(e,"Can not use keyword 'await' outside an async function"),this.raiseRecoverable(e,"The keyword '"+s+"' is reserved"))},et.parseIdent=function(t,e){var i=this.startNode();return t&&"never"===this.options.allowReserved&&(t=!1),this.type===E.name?i.name=this.value:this.type.keyword?(i.name=this.type.keyword,"class"!==i.name&&"function"!==i.name||this.lastTokEnd===this.lastTokStart+1&&46===this.input.charCodeAt(this.lastTokStart)||this.context.pop()):this.unexpected(),this.next(),this.finishNode(i,"Identifier"),t||this.checkUnreserved(i),i},et.parseYield=function(){this.yieldPos||(this.yieldPos=this.start);var t=this.startNode();return this.next(),this.type===E.semi||this.canInsertSemicolon()||this.type!==E.star&&!this.type.startsExpr?(t.delegate=!1,t.argument=null):(t.delegate=this.eat(E.star),t.argument=this.parseMaybeAssign()),this.finishNode(t,"YieldExpression")},et.parseAwait=function(){this.awaitPos||(this.awaitPos=this.start);var t=this.startNode();return this.next(),t.argument=this.parseMaybeUnary(null,!0),this.finishNode(t,"AwaitExpression")};var st=X.prototype;st.raise=function(t,e){var i=F(this.input,t);e+=" ("+i.line+":"+i.column+")";var s=new SyntaxError(e);throw s.pos=t,s.loc=i,s.raisedAt=this.pos,s},st.raiseRecoverable=st.raise,st.curPosition=function(){if(this.options.locations)return new V(this.curLine,this.pos-this.lineStart)};var rt=X.prototype,nt=function(t){this.flags=t,this.var=[],this.lexical=[]};rt.enterScope=function(t){this.scopeStack.push(new nt(t))},rt.exitScope=function(){this.scopeStack.pop()},rt.declareName=function(t,e,i){var s=!1;if(2===e){var r=this.currentScope();s=r.lexical.indexOf(t)>-1||r.var.indexOf(t)>-1,r.lexical.push(t)}else if(4===e){this.currentScope().lexical.push(t)}else if(3===e){var n=this.currentScope();s=n.lexical.indexOf(t)>-1,n.var.push(t)}else for(var a=this.scopeStack.length-1;a>=0;--a){var o=this.scopeStack[a];if(o.lexical.indexOf(t)>-1&&!(32&o.flags)&&o.lexical[0]===t&&(s=!0),o.var.push(t),3&o.flags)break}s&&this.raiseRecoverable(i,"Identifier '"+t+"' has already been declared")},rt.currentScope=function(){return this.scopeStack[this.scopeStack.length-1]},rt.currentVarScope=function(){for(var t=this.scopeStack.length-1;;t--){var e=this.scopeStack[t];if(3&e.flags)return e}},rt.inNonArrowFunction=function(){for(var t=this.scopeStack.length-1;t>=0;t--)if(2&this.scopeStack[t].flags&&!(16&this.scopeStack[t].flags))return!0;return!1};var at=function(t,e,i){this.type="",this.start=e,this.end=0,t.options.locations&&(this.loc=new D(t,i)),t.options.directSourceFile&&(this.sourceFile=t.options.directSourceFile),t.options.ranges&&(this.range=[e,0])},ot=X.prototype;function pt(t,e,i,s){return t.type=e,t.end=i,this.options.locations&&(t.loc.end=s),this.options.ranges&&(t.range[1]=i),t}ot.startNode=function(){return new at(this,this.start,this.startLoc)},ot.startNodeAt=function(t,e){return new at(this,t,e)},ot.finishNode=function(t,e){return pt.call(this,t,e,this.lastTokEnd,this.lastTokEndLoc)},ot.finishNodeAt=function(t,e,i,s){return pt.call(this,t,e,i,s)};var ht=function(t,e,i,s,r){this.token=t,this.isExpr=!!e,this.preserveSpace=!!i,this.override=s,this.generator=!!r},ct={b_stat:new ht("{",!1),b_expr:new ht("{",!0),b_tmpl:new ht("${",!1),p_stat:new ht("(",!1),p_expr:new ht("(",!0),q_tmpl:new ht("`",!0,!0,(function(t){return t.tryReadTemplateToken()})),f_stat:new ht("function",!1),f_expr:new ht("function",!0),f_expr_gen:new ht("function",!0,!1,null,!0),f_gen:new ht("function",!1,!1,null,!0)},lt=X.prototype;lt.initialContext=function(){return[ct.b_stat]},lt.braceIsBlock=function(t){var e=this.curContext();return e===ct.f_expr||e===ct.f_stat||(t!==E.colon||e!==ct.b_stat&&e!==ct.b_expr?t===E._return||t===E.name&&this.exprAllowed?A.test(this.input.slice(this.lastTokEnd,this.start)):t===E._else||t===E.semi||t===E.eof||t===E.parenR||t===E.arrow||(t===E.braceL?e===ct.b_stat:t!==E._var&&t!==E.name&&!this.exprAllowed):!e.isExpr)},lt.inGeneratorContext=function(){for(var t=this.context.length-1;t>=1;t--){var e=this.context[t];if("function"===e.token)return e.generator}return!1},lt.updateContext=function(t){var e,i=this.type;i.keyword&&t===E.dot?this.exprAllowed=!1:(e=i.updateContext)?e.call(this,t):this.exprAllowed=i.beforeExpr},E.parenR.updateContext=E.braceR.updateContext=function(){if(1!==this.context.length){var t=this.context.pop();t===ct.b_stat&&"function"===this.curContext().token&&(t=this.context.pop()),this.exprAllowed=!t.isExpr}else this.exprAllowed=!0},E.braceL.updateContext=function(t){this.context.push(this.braceIsBlock(t)?ct.b_stat:ct.b_expr),this.exprAllowed=!0},E.dollarBraceL.updateContext=function(){this.context.push(ct.b_tmpl),this.exprAllowed=!0},E.parenL.updateContext=function(t){var e=t===E._if||t===E._for||t===E._with||t===E._while;this.context.push(e?ct.p_stat:ct.p_expr),this.exprAllowed=!0},E.incDec.updateContext=function(){},E._function.updateContext=E._class.updateContext=function(t){t.beforeExpr&&t!==E.semi&&t!==E._else&&(t!==E.colon&&t!==E.braceL||this.curContext()!==ct.b_stat)?this.context.push(ct.f_expr):this.context.push(ct.f_stat),this.exprAllowed=!1},E.backQuote.updateContext=function(){this.curContext()===ct.q_tmpl?this.context.pop():this.context.push(ct.q_tmpl),this.exprAllowed=!1},E.star.updateContext=function(t){if(t===E._function){var e=this.context.length-1;this.context[e]===ct.f_expr?this.context[e]=ct.f_expr_gen:this.context[e]=ct.f_gen}this.exprAllowed=!0},E.name.updateContext=function(t){var e=!1;this.options.ecmaVersion>=6&&t!==E.dot&&("of"===this.value&&!this.exprAllowed||"yield"===this.value&&this.inGeneratorContext())&&(e=!0),this.exprAllowed=e};var ut={$LONE:["ASCII","ASCII_Hex_Digit","AHex","Alphabetic","Alpha","Any","Assigned","Bidi_Control","Bidi_C","Bidi_Mirrored","Bidi_M","Case_Ignorable","CI","Cased","Changes_When_Casefolded","CWCF","Changes_When_Casemapped","CWCM","Changes_When_Lowercased","CWL","Changes_When_NFKC_Casefolded","CWKCF","Changes_When_Titlecased","CWT","Changes_When_Uppercased","CWU","Dash","Default_Ignorable_Code_Point","DI","Deprecated","Dep","Diacritic","Dia","Emoji","Emoji_Component","Emoji_Modifier","Emoji_Modifier_Base","Emoji_Presentation","Extender","Ext","Grapheme_Base","Gr_Base","Grapheme_Extend","Gr_Ext","Hex_Digit","Hex","IDS_Binary_Operator","IDSB","IDS_Trinary_Operator","IDST","ID_Continue","IDC","ID_Start","IDS","Ideographic","Ideo","Join_Control","Join_C","Logical_Order_Exception","LOE","Lowercase","Lower","Math","Noncharacter_Code_Point","NChar","Pattern_Syntax","Pat_Syn","Pattern_White_Space","Pat_WS","Quotation_Mark","QMark","Radical","Regional_Indicator","RI","Sentence_Terminal","STerm","Soft_Dotted","SD","Terminal_Punctuation","Term","Unified_Ideograph","UIdeo","Uppercase","Upper","Variation_Selector","VS","White_Space","space","XID_Continue","XIDC","XID_Start","XIDS"],General_Category:["Cased_Letter","LC","Close_Punctuation","Pe","Connector_Punctuation","Pc","Control","Cc","cntrl","Currency_Symbol","Sc","Dash_Punctuation","Pd","Decimal_Number","Nd","digit","Enclosing_Mark","Me","Final_Punctuation","Pf","Format","Cf","Initial_Punctuation","Pi","Letter","L","Letter_Number","Nl","Line_Separator","Zl","Lowercase_Letter","Ll","Mark","M","Combining_Mark","Math_Symbol","Sm","Modifier_Letter","Lm","Modifier_Symbol","Sk","Nonspacing_Mark","Mn","Number","N","Open_Punctuation","Ps","Other","C","Other_Letter","Lo","Other_Number","No","Other_Punctuation","Po","Other_Symbol","So","Paragraph_Separator","Zp","Private_Use","Co","Punctuation","P","punct","Separator","Z","Space_Separator","Zs","Spacing_Mark","Mc","Surrogate","Cs","Symbol","S","Titlecase_Letter","Lt","Unassigned","Cn","Uppercase_Letter","Lu"],Script:["Adlam","Adlm","Ahom","Anatolian_Hieroglyphs","Hluw","Arabic","Arab","Armenian","Armn","Avestan","Avst","Balinese","Bali","Bamum","Bamu","Bassa_Vah","Bass","Batak","Batk","Bengali","Beng","Bhaiksuki","Bhks","Bopomofo","Bopo","Brahmi","Brah","Braille","Brai","Buginese","Bugi","Buhid","Buhd","Canadian_Aboriginal","Cans","Carian","Cari","Caucasian_Albanian","Aghb","Chakma","Cakm","Cham","Cherokee","Cher","Common","Zyyy","Coptic","Copt","Qaac","Cuneiform","Xsux","Cypriot","Cprt","Cyrillic","Cyrl","Deseret","Dsrt","Devanagari","Deva","Duployan","Dupl","Egyptian_Hieroglyphs","Egyp","Elbasan","Elba","Ethiopic","Ethi","Georgian","Geor","Glagolitic","Glag","Gothic","Goth","Grantha","Gran","Greek","Grek","Gujarati","Gujr","Gurmukhi","Guru","Han","Hani","Hangul","Hang","Hanunoo","Hano","Hatran","Hatr","Hebrew","Hebr","Hiragana","Hira","Imperial_Aramaic","Armi","Inherited","Zinh","Qaai","Inscriptional_Pahlavi","Phli","Inscriptional_Parthian","Prti","Javanese","Java","Kaithi","Kthi","Kannada","Knda","Katakana","Kana","Kayah_Li","Kali","Kharoshthi","Khar","Khmer","Khmr","Khojki","Khoj","Khudawadi","Sind","Lao","Laoo","Latin","Latn","Lepcha","Lepc","Limbu","Limb","Linear_A","Lina","Linear_B","Linb","Lisu","Lycian","Lyci","Lydian","Lydi","Mahajani","Mahj","Malayalam","Mlym","Mandaic","Mand","Manichaean","Mani","Marchen","Marc","Masaram_Gondi","Gonm","Meetei_Mayek","Mtei","Mende_Kikakui","Mend","Meroitic_Cursive","Merc","Meroitic_Hieroglyphs","Mero","Miao","Plrd","Modi","Mongolian","Mong","Mro","Mroo","Multani","Mult","Myanmar","Mymr","Nabataean","Nbat","New_Tai_Lue","Talu","Newa","Nko","Nkoo","Nushu","Nshu","Ogham","Ogam","Ol_Chiki","Olck","Old_Hungarian","Hung","Old_Italic","Ital","Old_North_Arabian","Narb","Old_Permic","Perm","Old_Persian","Xpeo","Old_South_Arabian","Sarb","Old_Turkic","Orkh","Oriya","Orya","Osage","Osge","Osmanya","Osma","Pahawh_Hmong","Hmng","Palmyrene","Palm","Pau_Cin_Hau","Pauc","Phags_Pa","Phag","Phoenician","Phnx","Psalter_Pahlavi","Phlp","Rejang","Rjng","Runic","Runr","Samaritan","Samr","Saurashtra","Saur","Sharada","Shrd","Shavian","Shaw","Siddham","Sidd","SignWriting","Sgnw","Sinhala","Sinh","Sora_Sompeng","Sora","Soyombo","Soyo","Sundanese","Sund","Syloti_Nagri","Sylo","Syriac","Syrc","Tagalog","Tglg","Tagbanwa","Tagb","Tai_Le","Tale","Tai_Tham","Lana","Tai_Viet","Tavt","Takri","Takr","Tamil","Taml","Tangut","Tang","Telugu","Telu","Thaana","Thaa","Thai","Tibetan","Tibt","Tifinagh","Tfng","Tirhuta","Tirh","Ugaritic","Ugar","Vai","Vaii","Warang_Citi","Wara","Yi","Yiii","Zanabazar_Square","Zanb"]};Array.prototype.push.apply(ut.$LONE,ut.General_Category),ut.gc=ut.General_Category,ut.sc=ut.Script_Extensions=ut.scx=ut.Script;var dt=X.prototype,ft=function(t){this.parser=t,this.validFlags="gim"+(t.options.ecmaVersion>=6?"uy":"")+(t.options.ecmaVersion>=9?"s":""),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 mt(t){return t<=65535?String.fromCharCode(t):(t-=65536,String.fromCharCode(55296+(t>>10),56320+(1023&t)))}function yt(t){return 36===t||t>=40&&t<=43||46===t||63===t||t>=91&&t<=94||t>=123&&t<=125}function gt(t){return t>=65&&t<=90||t>=97&&t<=122}function vt(t){return gt(t)||95===t}function xt(t){return vt(t)||bt(t)}function bt(t){return t>=48&&t<=57}function _t(t){return t>=48&&t<=57||t>=65&&t<=70||t>=97&&t<=102}function kt(t){return t>=65&&t<=70?t-65+10:t>=97&&t<=102?t-97+10:t-48}function St(t){return t>=48&&t<=55}ft.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&&this.parser.options.ecmaVersion>=6,this.switchN=s&&this.parser.options.ecmaVersion>=9},ft.prototype.raise=function(t){this.parser.raiseRecoverable(this.start,"Invalid regular expression: /"+this.source+"/: "+t)},ft.prototype.at=function(t){var e=this.source,i=e.length;if(t>=i)return-1;var s=e.charCodeAt(t);return!this.switchU||s<=55295||s>=57344||t+1>=i?s:(s<<10)+e.charCodeAt(t+1)-56613888},ft.prototype.nextIndex=function(t){var e=this.source,i=e.length;if(t>=i)return i;var s=e.charCodeAt(t);return!this.switchU||s<=55295||s>=57344||t+1>=i?t+1:t+2},ft.prototype.current=function(){return this.at(this.pos)},ft.prototype.lookahead=function(){return this.at(this.nextIndex(this.pos))},ft.prototype.advance=function(){this.pos=this.nextIndex(this.pos)},ft.prototype.eat=function(t){return this.current()===t&&(this.advance(),!0)},dt.validateRegExpFlags=function(t){for(var e=t.validFlags,i=t.flags,s=0;s<i.length;s++){var r=i.charAt(s);-1===e.indexOf(r)&&this.raise(t.start,"Invalid regular expression flag"),i.indexOf(r,s+1)>-1&&this.raise(t.start,"Duplicate regular expression flag")}},dt.validateRegExpPattern=function(t){this.regexp_pattern(t),!t.switchN&&this.options.ecmaVersion>=9&&t.groupNames.length>0&&(t.switchN=!0,this.regexp_pattern(t))},dt.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")}},dt.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")},dt.regexp_alternative=function(t){for(;t.pos<t.source.length&&this.regexp_eatTerm(t););},dt.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)},dt.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(this.options.ecmaVersion>=9&&(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},dt.regexp_eatQuantifier=function(t,e){return void 0===e&&(e=!1),!!this.regexp_eatQuantifierPrefix(t,e)&&(t.eat(63),!0)},dt.regexp_eatQuantifierPrefix=function(t,e){return t.eat(42)||t.eat(43)||t.eat(63)||this.regexp_eatBracedQuantifier(t,e)},dt.regexp_eatBracedQuantifier=function(t,e){var i=t.pos;if(t.eat(123)){var s=0,r=-1;if(this.regexp_eatDecimalDigits(t)&&(s=t.lastIntValue,t.eat(44)&&this.regexp_eatDecimalDigits(t)&&(r=t.lastIntValue),t.eat(125)))return-1!==r&&r<s&&!e&&t.raise("numbers out of order in {} quantifier"),!0;t.switchU&&!e&&t.raise("Incomplete quantifier"),t.pos=i}return!1},dt.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)},dt.regexp_eatReverseSolidusAtomEscape=function(t){var e=t.pos;if(t.eat(92)){if(this.regexp_eatAtomEscape(t))return!0;t.pos=e}return!1},dt.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},dt.regexp_eatCapturingGroup=function(t){if(t.eat(40)){if(this.options.ecmaVersion>=9?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},dt.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)},dt.regexp_eatInvalidBracedQuantifier=function(t){return this.regexp_eatBracedQuantifier(t,!0)&&t.raise("Nothing to repeat"),!1},dt.regexp_eatSyntaxCharacter=function(t){var e=t.current();return!!yt(e)&&(t.lastIntValue=e,t.advance(),!0)},dt.regexp_eatPatternCharacters=function(t){for(var e=t.pos,i=0;-1!==(i=t.current())&&!yt(i);)t.advance();return t.pos!==e},dt.regexp_eatExtendedPatternCharacter=function(t){var e=t.current();return!(-1===e||36===e||e>=40&&e<=43||46===e||63===e||91===e||94===e||124===e)&&(t.advance(),!0)},dt.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")}},dt.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},dt.regexp_eatRegExpIdentifierName=function(t){if(t.lastStringValue="",this.regexp_eatRegExpIdentifierStart(t)){for(t.lastStringValue+=mt(t.lastIntValue);this.regexp_eatRegExpIdentifierPart(t);)t.lastStringValue+=mt(t.lastIntValue);return!0}return!1},dt.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 g(t,!0)||36===t||95===t}(i)?(t.lastIntValue=i,!0):(t.pos=e,!1)},dt.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 v(t,!0)||36===t||95===t||8204===t||8205===t}(i)?(t.lastIntValue=i,!0):(t.pos=e,!1)},dt.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)},dt.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},dt.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},dt.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)},dt.regexp_eatCControlLetter=function(t){var e=t.pos;if(t.eat(99)){if(this.regexp_eatControlLetter(t))return!0;t.pos=e}return!1},dt.regexp_eatZero=function(t){return 48===t.current()&&!bt(t.lookahead())&&(t.lastIntValue=0,t.advance(),!0)},dt.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)},dt.regexp_eatControlLetter=function(t){var e=t.current();return!!gt(e)&&(t.lastIntValue=e%32,t.advance(),!0)},dt.regexp_eatRegExpUnicodeEscapeSequence=function(t){var e,i=t.pos;if(t.eat(117)){if(this.regexp_eatFixedHexDigits(t,4)){var s=t.lastIntValue;if(t.switchU&&s>=55296&&s<=56319){var r=t.pos;if(t.eat(92)&&t.eat(117)&&this.regexp_eatFixedHexDigits(t,4)){var n=t.lastIntValue;if(n>=56320&&n<=57343)return t.lastIntValue=1024*(s-55296)+(n-56320)+65536,!0}t.pos=r,t.lastIntValue=s}return!0}if(t.switchU&&t.eat(123)&&this.regexp_eatHexDigits(t)&&t.eat(125)&&((e=t.lastIntValue)>=0&&e<=1114111))return!0;t.switchU&&t.raise("Invalid unicode escape"),t.pos=i}return!1},dt.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)},dt.regexp_eatDecimalEscape=function(t){t.lastIntValue=0;var e=t.current();if(e>=49&&e<=57){do{t.lastIntValue=10*t.lastIntValue+(e-48),t.advance()}while((e=t.current())>=48&&e<=57);return!0}return!1},dt.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&&this.options.ecmaVersion>=9&&(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},dt.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 r=t.lastStringValue;return this.regexp_validateUnicodePropertyNameOrValue(t,r),!0}return!1},dt.regexp_validateUnicodePropertyNameAndValue=function(t,e,i){ut.hasOwnProperty(e)&&-1!==ut[e].indexOf(i)||t.raise("Invalid property name")},dt.regexp_validateUnicodePropertyNameOrValue=function(t,e){-1===ut.$LONE.indexOf(e)&&t.raise("Invalid property name")},dt.regexp_eatUnicodePropertyName=function(t){var e=0;for(t.lastStringValue="";vt(e=t.current());)t.lastStringValue+=mt(e),t.advance();return""!==t.lastStringValue},dt.regexp_eatUnicodePropertyValue=function(t){var e=0;for(t.lastStringValue="";xt(e=t.current());)t.lastStringValue+=mt(e),t.advance();return""!==t.lastStringValue},dt.regexp_eatLoneUnicodePropertyNameOrValue=function(t){return this.regexp_eatUnicodePropertyValue(t)},dt.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},dt.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&&e>i&&t.raise("Range out of order in character class")}}},dt.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||St(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)},dt.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)},dt.regexp_eatClassControlLetter=function(t){var e=t.current();return!(!bt(e)&&95!==e)&&(t.lastIntValue=e%32,t.advance(),!0)},dt.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},dt.regexp_eatDecimalDigits=function(t){var e=t.pos,i=0;for(t.lastIntValue=0;bt(i=t.current());)t.lastIntValue=10*t.lastIntValue+(i-48),t.advance();return t.pos!==e},dt.regexp_eatHexDigits=function(t){var e=t.pos,i=0;for(t.lastIntValue=0;_t(i=t.current());)t.lastIntValue=16*t.lastIntValue+kt(i),t.advance();return t.pos!==e},dt.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},dt.regexp_eatOctalDigit=function(t){var e=t.current();return St(e)?(t.lastIntValue=e-48,t.advance(),!0):(t.lastIntValue=0,!1)},dt.regexp_eatFixedHexDigits=function(t,e){var i=t.pos;t.lastIntValue=0;for(var s=0;s<e;++s){var r=t.current();if(!_t(r))return t.pos=i,!1;t.lastIntValue=16*t.lastIntValue+kt(r),t.advance()}return!0};var wt=function(t){this.type=t.type,this.value=t.value,this.start=t.start,this.end=t.end,t.options.locations&&(this.loc=new D(t,t.startLoc,t.endLoc)),t.options.ranges&&(this.range=[t.start,t.end])},Et=X.prototype;function At(t){return t<=65535?String.fromCharCode(t):(t-=65536,String.fromCharCode(55296+(t>>10),56320+(1023&t)))}Et.next=function(){this.options.onToken&&this.options.onToken(new wt(this)),this.lastTokEnd=this.end,this.lastTokStart=this.start,this.lastTokEndLoc=this.endLoc,this.lastTokStartLoc=this.startLoc,this.nextToken()},Et.getToken=function(){return this.next(),new wt(this)},"undefined"!=typeof Symbol&&(Et[Symbol.iterator]=function(){var t=this;return{next:function(){var e=t.getToken();return{done:e.type===E.eof,value:e}}}}),Et.curContext=function(){return this.context[this.context.length-1]},Et.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(E.eof):t.override?t.override(this):void this.readToken(this.fullCharCodeAtPos())},Et.readToken=function(t){return g(t,this.options.ecmaVersion>=6)||92===t?this.readWord():this.getTokenFromCode(t)},Et.fullCharCodeAtPos=function(){var t=this.input.charCodeAt(this.pos);return t<=55295||t>=57344?t:(t<<10)+this.input.charCodeAt(this.pos+1)-56613888},Et.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(C.lastIndex=i;(t=C.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())},Et.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&&!I(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())},Et.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(!(t>8&&t<14||t>=5760&&L.test(String.fromCharCode(t))))break t;++this.pos}}},Et.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)},Et.readToken_dot=function(){var t=this.input.charCodeAt(this.pos+1);if(t>=48&&t<=57)return this.readNumber(!0);var e=this.input.charCodeAt(this.pos+2);return this.options.ecmaVersion>=6&&46===t&&46===e?(this.pos+=3,this.finishToken(E.ellipsis)):(++this.pos,this.finishToken(E.dot))},Et.readToken_slash=function(){var t=this.input.charCodeAt(this.pos+1);return this.exprAllowed?(++this.pos,this.readRegexp()):61===t?this.finishOp(E.assign,2):this.finishOp(E.slash,1)},Et.readToken_mult_modulo_exp=function(t){var e=this.input.charCodeAt(this.pos+1),i=1,s=42===t?E.star:E.modulo;return this.options.ecmaVersion>=7&&42===t&&42===e&&(++i,s=E.starstar,e=this.input.charCodeAt(this.pos+2)),61===e?this.finishOp(E.assign,i+1):this.finishOp(s,i)},Et.readToken_pipe_amp=function(t){var e=this.input.charCodeAt(this.pos+1);return e===t?this.finishOp(124===t?E.logicalOR:E.logicalAND,2):61===e?this.finishOp(E.assign,2):this.finishOp(124===t?E.bitwiseOR:E.bitwiseAND,1)},Et.readToken_caret=function(){return 61===this.input.charCodeAt(this.pos+1)?this.finishOp(E.assign,2):this.finishOp(E.bitwiseXOR,1)},Et.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&&!A.test(this.input.slice(this.lastTokEnd,this.pos))?this.finishOp(E.incDec,2):(this.skipLineComment(3),this.skipSpace(),this.nextToken()):61===e?this.finishOp(E.assign,2):this.finishOp(E.plusMin,1)},Et.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(E.assign,i+1):this.finishOp(E.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(E.relational,i)):(this.skipLineComment(4),this.skipSpace(),this.nextToken())},Et.readToken_eq_excl=function(t){var e=this.input.charCodeAt(this.pos+1);return 61===e?this.finishOp(E.equality,61===this.input.charCodeAt(this.pos+2)?3:2):61===t&&62===e&&this.options.ecmaVersion>=6?(this.pos+=2,this.finishToken(E.arrow)):this.finishOp(61===t?E.eq:E.prefix,1)},Et.getTokenFromCode=function(t){switch(t){case 46:return this.readToken_dot();case 40:return++this.pos,this.finishToken(E.parenL);case 41:return++this.pos,this.finishToken(E.parenR);case 59:return++this.pos,this.finishToken(E.semi);case 44:return++this.pos,this.finishToken(E.comma);case 91:return++this.pos,this.finishToken(E.bracketL);case 93:return++this.pos,this.finishToken(E.bracketR);case 123:return++this.pos,this.finishToken(E.braceL);case 125:return++this.pos,this.finishToken(E.braceR);case 58:return++this.pos,this.finishToken(E.colon);case 63:return++this.pos,this.finishToken(E.question);case 96:if(this.options.ecmaVersion<6)break;return++this.pos,this.finishToken(E.backQuote);case 48:var e=this.input.charCodeAt(this.pos+1);if(120===e||88===e)return this.readRadixNumber(16);if(this.options.ecmaVersion>=6){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(E.prefix,1)}this.raise(this.pos,"Unexpected character '"+At(t)+"'")},Et.finishOp=function(t,e){var i=this.input.slice(this.pos,this.pos+e);return this.pos+=e,this.finishToken(t,i)},Et.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(A.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 r=this.input.slice(i,this.pos);++this.pos;var n=this.pos,a=this.readWord1();this.containsEsc&&this.unexpected(n);var o=this.regexpState||(this.regexpState=new ft(this));o.reset(i,r,a),this.validateRegExpFlags(o),this.validateRegExpPattern(o);var p=null;try{p=new RegExp(r,a)}catch(h){}return this.finishToken(E.regexp,{pattern:r,flags:a,value:p})},Et.readInt=function(t,e){for(var i=this.pos,s=0,r=0,n=null==e?1/0:e;r<n;++r){var a=this.input.charCodeAt(this.pos),o=void 0;if((o=a>=97?a-97+10:a>=65?a-65+10:a>=48&&a<=57?a-48:1/0)>=t)break;++this.pos,s=s*t+o}return this.pos===i||null!=e&&this.pos-i!==e?null:s},Et.readRadixNumber=function(t){this.pos+=2;var e=this.readInt(t);return null==e&&this.raise(this.start+2,"Expected number in radix "+t),g(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number"),this.finishToken(E.num,e)},Et.readNumber=function(t){var e=this.pos;t||null!==this.readInt(10)||this.raise(e,"Invalid number");var i=this.pos-e>=2&&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);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")),g(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number");var r=this.input.slice(e,this.pos),n=i?parseInt(r,8):parseFloat(r);return this.finishToken(E.num,n)},Et.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,t>1114111&&this.invalidStringToken(e,"Code point out of bounds")}else t=this.readHexChar(4);return t},Et.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):(I(s,this.options.ecmaVersion>=10)&&this.raise(this.start,"Unterminated string constant"),++this.pos)}return e+=this.input.slice(i,this.pos++),this.finishToken(E.string,e)};var Ct={};Et.tryReadTemplateToken=function(){this.inTemplateElement=!0;try{this.readTmplToken()}catch(t){if(t!==Ct)throw t;this.readInvalidTemplateToken()}this.inTemplateElement=!1},Et.invalidStringToken=function(t,e){if(this.inTemplateElement&&this.options.ecmaVersion>=9)throw Ct;this.raise(t,e)},Et.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!==E.template&&this.type!==E.invalidTemplate?(t+=this.input.slice(e,this.pos),this.finishToken(E.template,t)):36===i?(this.pos+=2,this.finishToken(E.dollarBraceL)):(++this.pos,this.finishToken(E.backQuote));if(92===i)t+=this.input.slice(e,this.pos),t+=this.readEscapedChar(!0),e=this.pos;else if(I(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}},Et.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(E.invalidTemplate,this.input.slice(this.start,this.pos))}this.raise(this.start,"Unterminated template")},Et.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 At(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(e>=48&&e<=55){var i=this.input.substr(this.pos-1,3).match(/^[0-7]+/)[0],s=parseInt(i,8);return s>255&&(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 String.fromCharCode(e)}},Et.readHexChar=function(t){var e=this.pos,i=this.readInt(16,t);return null===i&&this.invalidStringToken(e,"Bad character escape sequence"),i},Et.readWord1=function(){this.containsEsc=!1;for(var t="",e=!0,i=this.pos,s=this.options.ecmaVersion>=6;this.pos<this.input.length;){var r=this.fullCharCodeAtPos();if(v(r,s))this.pos+=r<=65535?1:2;else{if(92!==r)break;this.containsEsc=!0,t+=this.input.slice(i,this.pos);var n=this.pos;117!==this.input.charCodeAt(++this.pos)&&this.invalidStringToken(this.pos,"Expecting Unicode escape sequence \\uXXXX"),++this.pos;var 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