gpu.js/dist/gpu-browser.min.js

GPU Accelerated JavaScript

/**
 * gpu.js
 * http://gpu.rocks/
 *
 * GPU Accelerated JavaScript
 *
 * @version 2.16.0
 * @date Wed Nov 16 2022 15:48:40 GMT-0500 (Eastern Standard Time)
 *
 * @license MIT
 * The MIT License
 *
 * Copyright (c) 2022 gpu.js Team
 *//**
 * gpu.js
 * http://gpu.rocks/
 *
 * GPU Accelerated JavaScript
 *
 * @version 2.16.0
 * @date Wed Nov 16 2022 15:48:37 GMT-0500 (Eastern Standard Time)
 *
 * @license MIT
 * The MIT License
 *
 * Copyright (c) 2022 gpu.js Team
 */
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e=this.options.program||this.startNode();return this.nextToken(),this.parseTopLevel(e)},z.inFunction.get=function(){return(2&this.currentVarScope().flags)>0},z.inGenerator.get=function(){return(8&this.currentVarScope().flags)>0},z.inAsync.get=function(){return(4&this.currentVarScope().flags)>0},z.allowSuper.get=function(){return(64&this.currentThisScope().flags)>0},z.allowDirectSuper.get=function(){return(128&this.currentThisScope().flags)>0},z.treatFunctionsAsVar.get=function(){return this.treatFunctionsAsVarInScope(this.currentScope())},O.prototype.inNonArrowFunction=function(){return(2&this.currentThisScope().flags)>0},O.extend=function(){for(var e=[],t=arguments.length;t--;)e[t]=arguments[t];for(var n=this,r=0;r<e.length;r++)n=e[r](n);return n},O.parse=function(e,t){return new this(t,e).parse()},O.parseExpressionAt=function(e,t,n){var r=new this(n,e,t);return r.nextToken(),r.parseExpression()},O.tokenizer=function(e,t){return new this(t,e)},Object.defineProperties(O.prototype,z);var P=O.prototype,K=/^(?:'((?:\\.|[^'])*?)'|"((?:\\.|[^"])*?)")/;function G(){this.shorthandAssign=this.trailingComma=this.parenthesizedAssign=this.parenthesizedBind=this.doubleProto=-1}P.strictDirective=function(e){for(;;){E.lastIndex=e,e+=E.exec(this.input)[0].length;var t=K.exec(this.input.slice(e));if(!t)return!1;if("use strict"===(t[1]||t[2]))return!0;e+=t[0].length,E.lastIndex=e,e+=E.exec(this.input)[0].length,";"===this.input[e]&&e++}},P.eat=function(e){return this.type===e&&(this.next(),!0)},P.isContextual=function(e){return this.type===T.name&&this.value===e&&!this.containsEsc},P.eatContextual=function(e){return!!this.isContextual(e)&&(this.next(),!0)},P.expectContextual=function(e){this.eatContextual(e)||this.unexpected()},P.canInsertSemicolon=function(){return this.type===T.eof||this.type===T.braceR||v.test(this.input.slice(this.lastTokEnd,this.start))},P.insertSemicolon=function(){if(this.canInsertSemicolon())return this.options.onInsertedSemicolon&&this.options.onInsertedSemicolon(this.lastTokEnd,this.lastTokEndLoc),!0},P.semicolon=function(){this.eat(T.semi)||this.insertSemicolon()||this.unexpected()},P.afterTrailingComma=function(e,t){if(this.type===e)return this.options.onTrailingComma&&this.options.onTrailingComma(this.lastTokStart,this.lastTokStartLoc),t||this.next(),!0},P.expect=function(e){this.eat(e)||this.unexpected()},P.unexpected=function(e){this.raise(null!=e?e:this.start,"Unexpected token")},P.checkPatternErrors=function(e,t){if(e){e.trailingComma>-1&&this.raiseRecoverable(e.trailingComma,"Comma is not permitted after the rest element");var n=t?e.parenthesizedAssign:e.parenthesizedBind;n>-1&&this.raiseRecoverable(n,"Parenthesized pattern")}},P.checkExpressionErrors=function(e,t){if(!e)return!1;var n=e.shorthandAssign,r=e.doubleProto;if(!t)return n>=0||r>=0;n>=0&&this.raise(n,"Shorthand property assignments are valid only in destructuring patterns"),r>=0&&this.raiseRecoverable(r,"Redefinition of __proto__ property")},P.checkYieldAwaitInDefaultParams=function(){this.yieldPos&&(!this.awaitPos||this.yieldPos<this.awaitPos)&&this.raise(this.yieldPos,"Yield expression cannot be a default value"),this.awaitPos&&this.raise(this.awaitPos,"Await expression cannot be a default value")},P.isSimpleAssignTarget=function(e){return"ParenthesizedExpression"===e.type?this.isSimpleAssignTarget(e.expression):"Identifier"===e.type||"MemberExpression"===e.type};var U=O.prototype;U.parseTopLevel=function(e){var t={};for(e.body||(e.body=[]);this.type!==T.eof;){var n=this.parseStatement(null,!0,t);e.body.push(n)}if(this.inModule)for(var r=0,i=Object.keys(this.undefinedExports);r<i.length;r+=1){var s=i[r];this.raiseRecoverable(this.undefinedExports[s].start,"Export '"+s+"' is not defined")}return this.adaptDirectivePrologue(e.body),this.next(),e.sourceType=this.options.sourceType,this.finishNode(e,"Program")};var B={kind:"loop"},W={kind:"switch"};U.isLet=function(e){if(this.options.ecmaVersion<6||!this.isContextual("let"))return!1;E.lastIndex=this.pos;var t=E.exec(this.input),n=this.pos+t[0].length,r=this.input.charCodeAt(n);if(91===r)return!0;if(e)return!1;if(123===r)return!0;if(p(r,!0)){for(var s=n+1;d(this.input.charCodeAt(s),!0);)++s;var a=this.input.slice(n,s);if(!i.test(a))return!0}return!1},U.isAsyncFunction=function(){if(this.options.ecmaVersion<8||!this.isContextual("async"))return!1;E.lastIndex=this.pos;var e=E.exec(this.input),t=this.pos+e[0].length;return!(v.test(this.input.slice(this.pos,t))||"function"!==this.input.slice(t,t+8)||t+8!==this.input.length&&d(this.input.charAt(t+8)))},U.parseStatement=function(e,t,n){var r,i=this.type,s=this.startNode();switch(this.isLet(e)&&(i=T._var,r="let"),i){case T._break:case T._continue:return this.parseBreakContinueStatement(s,i.keyword);case T._debugger:return this.parseDebuggerStatement(s);case T._do:return this.parseDoStatement(s);case T._for:return this.parseForStatement(s);case T._function:return e&&(this.strict||"if"!==e&&"label"!==e)&&this.options.ecmaVersion>=6&&this.unexpected(),this.parseFunctionStatement(s,!1,!e);case T._class:return e&&this.unexpected(),this.parseClass(s,!0);case T._if:return this.parseIfStatement(s);case T._return:return this.parseReturnStatement(s);case T._switch:return this.parseSwitchStatement(s);case T._throw:return this.parseThrowStatement(s);case T._try:return this.parseTryStatement(s);case T._const:case T._var:return r=r||this.value,e&&"var"!==r&&this.unexpected(),this.parseVarStatement(s,r);case T._while:return this.parseWhileStatement(s);case T._with:return this.parseWithStatement(s);case T.braceL:return this.parseBlock(!0,s);case T.semi:return this.parseEmptyStatement(s);case T._export:case T._import:if(this.options.ecmaVersion>10&&i===T._import){E.lastIndex=this.pos;var a=E.exec(this.input),o=this.pos+a[0].length;if(40===this.input.charCodeAt(o))return this.parseExpressionStatement(s,this.parseExpression())}return this.options.allowImportExportEverywhere||(t||this.raise(this.start,"'import' and 'export' may only appear at the top level"),this.inModule||this.raise(this.start,"'import' and 'export' may appear only with 'sourceType: module'")),i===T._import?this.parseImport(s):this.parseExport(s,n);default:if(this.isAsyncFunction())return e&&this.unexpected(),this.next(),this.parseFunctionStatement(s,!0,!e);var u=this.value,l=this.parseExpression();return i===T.name&&"Identifier"===l.type&&this.eat(T.colon)?this.parseLabeledStatement(s,u,l,e):this.parseExpressionStatement(s,l)}},U.parseBreakContinueStatement=function(e,t){var n="break"===t;this.next(),this.eat(T.semi)||this.insertSemicolon()?e.label=null:this.type!==T.name?this.unexpected():(e.label=this.parseIdent(),this.semicolon());for(var r=0;r<this.labels.length;++r){var i=this.labels[r];if(null==e.label||i.name===e.label.name){if(null!=i.kind&&(n||"loop"===i.kind))break;if(e.label&&n)break}}return r===this.labels.length&&this.raise(e.start,"Unsyntactic "+t),this.finishNode(e,n?"BreakStatement":"ContinueStatement")},U.parseDebuggerStatement=function(e){return this.next(),this.semicolon(),this.finishNode(e,"DebuggerStatement")},U.parseDoStatement=function(e){return this.next(),this.labels.push(B),e.body=this.parseStatement("do"),this.labels.pop(),this.expect(T._while),e.test=this.parseParenExpression(),this.options.ecmaVersion>=6?this.eat(T.semi):this.semicolon(),this.finishNode(e,"DoWhileStatement")},U.parseForStatement=function(e){this.next();var t=this.options.ecmaVersion>=9&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction)&&this.eatContextual("await")?this.lastTokStart:-1;if(this.labels.push(B),this.enterScope(0),this.expect(T.parenL),this.type===T.semi)return t>-1&&this.unexpected(t),this.parseFor(e,null);var n=this.isLet();if(this.type===T._var||this.type===T._const||n){var r=this.startNode(),i=n?"let":this.value;return this.next(),this.parseVar(r,!0,i),this.finishNode(r,"VariableDeclaration"),(this.type===T._in||this.options.ecmaVersion>=6&&this.isContextual("of"))&&1===r.declarations.length?(this.options.ecmaVersion>=9&&(this.type===T._in?t>-1&&this.unexpected(t):e.await=t>-1),this.parseForIn(e,r)):(t>-1&&this.unexpected(t),this.parseFor(e,r))}var s=new G,a=this.parseExpression(!0,s);return this.type===T._in||this.options.ecmaVersion>=6&&this.isContextual("of")?(this.options.ecmaVersion>=9&&(this.type===T._in?t>-1&&this.unexpected(t):e.await=t>-1),this.toAssignable(a,!1,s),this.checkLVal(a),this.parseForIn(e,a)):(this.checkExpressionErrors(s,!0),t>-1&&this.unexpected(t),this.parseFor(e,a))},U.parseFunctionStatement=function(e,t,n){return this.next(),this.parseFunction(e,H|(n?0:X),!1,t)},U.parseIfStatement=function(e){return this.next(),e.test=this.parseParenExpression(),e.consequent=this.parseStatement("if"),e.alternate=this.eat(T._else)?this.parseStatement("if"):null,this.finishNode(e,"IfStatement")},U.parseReturnStatement=function(e){return this.inFunction||this.options.allowReturnOutsideFunction||this.raise(this.start,"'return' outside of function"),this.next(),this.eat(T.semi)||this.insertSemicolon()?e.argument=null:(e.argument=this.parseExpression(),this.semicolon()),this.finishNode(e,"ReturnStatement")},U.parseSwitchStatement=function(e){var t;this.next(),e.discriminant=this.parseParenExpression(),e.cases=[],this.expect(T.braceL),this.labels.push(W),this.enterScope(0);for(var n=!1;this.type!==T.braceR;)if(this.type===T._case||this.type===T._default){var r=this.type===T._case;t&&this.finishNode(t,"SwitchCase"),e.cases.push(t=this.startNode()),t.consequent=[],this.next(),r?t.test=this.parseExpression():(n&&this.raiseRecoverable(this.lastTokStart,"Multiple default clauses"),n=!0,t.test=null),this.expect(T.colon)}else t||this.unexpected(),t.consequent.push(this.parseStatement(null));return this.exitScope(),t&&this.finishNode(t,"SwitchCase"),this.next(),this.labels.pop(),this.finishNode(e,"SwitchStatement")},U.parseThrowStatement=function(e){return this.next(),v.test(this.input.slice(this.lastTokEnd,this.start))&&this.raise(this.lastTokEnd,"Illegal newline after throw"),e.argument=this.parseExpression(),this.semicolon(),this.finishNode(e,"ThrowStatement")};var j=[];U.parseTryStatement=function(e){if(this.next(),e.block=this.parseBlock(),e.handler=null,this.type===T._catch){var t=this.startNode();if(this.next(),this.eat(T.parenL)){t.param=this.parseBindingAtom();var n="Identifier"===t.param.type;this.enterScope(n?32:0),this.checkLVal(t.param,n?4:2),this.expect(T.parenR)}else this.options.ecmaVersion<10&&this.unexpected(),t.param=null,this.enterScope(0);t.body=this.parseBlock(!1),this.exitScope(),e.handler=this.finishNode(t,"CatchClause")}return e.finalizer=this.eat(T._finally)?this.parseBlock():null,e.handler||e.finalizer||this.raise(e.start,"Missing catch or finally clause"),this.finishNode(e,"TryStatement")},U.parseVarStatement=function(e,t){return this.next(),this.parseVar(e,!1,t),this.semicolon(),this.finishNode(e,"VariableDeclaration")},U.parseWhileStatement=function(e){return this.next(),e.test=this.parseParenExpression(),this.labels.push(B),e.body=this.parseStatement("while"),this.labels.pop(),this.finishNode(e,"WhileStatement")},U.parseWithStatement=function(e){return this.strict&&this.raise(this.start,"'with' in strict mode"),this.next(),e.object=this.parseParenExpression(),e.body=this.parseStatement("with"),this.finishNode(e,"WithStatement")},U.parseEmptyStatement=function(e){return this.next(),this.finishNode(e,"EmptyStatement")},U.parseLabeledStatement=function(e,t,n,r){for(var i=0,s=this.labels;i<s.length;i+=1){s[i].name===t&&this.raise(n.start,"Label '"+t+"' is already declared")}for(var a=this.type.isLoop?"loop":this.type===T._switch?"switch":null,o=this.labels.length-1;o>=0;o--){var u=this.labels[o];if(u.statementStart!==e.start)break;u.statementStart=this.start,u.kind=a}return this.labels.push({name:t,kind:a,statementStart:this.start}),e.body=this.parseStatement(r?-1===r.indexOf("label")?r+"label":r:"label"),this.labels.pop(),e.label=n,this.finishNode(e,"LabeledStatement")},U.parseExpressionStatement=function(e,t){return e.expression=t,this.semicolon(),this.finishNode(e,"ExpressionStatement")},U.parseBlock=function(e,t){for(void 0===e&&(e=!0),void 0===t&&(t=this.startNode()),t.body=[],this.expect(T.braceL),e&&this.enterScope(0);!this.eat(T.braceR);){var n=this.parseStatement(null);t.body.push(n)}return e&&this.exitScope(),this.finishNode(t,"BlockStatement")},U.parseFor=function(e,t){return e.init=t,this.expect(T.semi),e.test=this.type===T.semi?null:this.parseExpression(),this.expect(T.semi),e.update=this.type===T.parenR?null:this.parseExpression(),this.expect(T.parenR),e.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(e,"ForStatement")},U.parseForIn=function(e,t){var n=this.type===T._in;return this.next(),"VariableDeclaration"===t.type&&null!=t.declarations[0].init&&(!n||this.options.ecmaVersion<8||this.strict||"var"!==t.kind||"Identifier"!==t.declarations[0].id.type)?this.raise(t.start,(n?"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=n?this.parseExpression():this.parseMaybeAssign(),this.expect(T.parenR),e.body=this.parseStatement("for"),this.exitScope(),this.labels.pop(),this.finishNode(e,n?"ForInStatement":"ForOfStatement")},U.parseVar=function(e,t,n){for(e.declarations=[],e.kind=n;;){var r=this.startNode();if(this.parseVarId(r,n),this.eat(T.eq)?r.init=this.parseMaybeAssign(t):"const"!==n||this.type===T._in||this.options.ecmaVersion>=6&&this.isContextual("of")?"Identifier"===r.id.type||t&&(this.type===T._in||this.isContextual("of"))?r.init=null:this.raise(this.lastTokEnd,"Complex binding patterns require an initialization value"):this.unexpected(),e.declarations.push(this.finishNode(r,"VariableDeclarator")),!this.eat(T.comma))break}return e},U.parseVarId=function(e,t){e.id=this.parseBindingAtom(),this.checkLVal(e.id,"var"===t?1:2,!1)};var H=1,X=2;U.parseFunction=function(e,t,n,r){this.initFunction(e),(this.options.ecmaVersion>=9||this.options.ecmaVersion>=6&&!r)&&(this.type===T.star&&t&X&&this.unexpected(),e.generator=this.eat(T.star)),this.options.ecmaVersion>=8&&(e.async=!!r),t&H&&(e.id=4&t&&this.type!==T.name?null:this.parseIdent(),!e.id||t&X||this.checkLVal(e.id,this.strict||e.generator||e.async?this.treatFunctionsAsVar?1:2:3));var i=this.yieldPos,s=this.awaitPos,a=this.awaitIdentPos;return this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0,this.enterScope(M(e.async,e.generator)),t&H||(e.id=this.type===T.name?this.parseIdent():null),this.parseFunctionParams(e),this.parseFunctionBody(e,n,!1),this.yieldPos=i,this.awaitPos=s,this.awaitIdentPos=a,this.finishNode(e,t&H?"FunctionDeclaration":"FunctionExpression")},U.parseFunctionParams=function(e){this.expect(T.parenL),e.params=this.parseBindingList(T.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams()},U.parseClass=function(e,t){this.next();var n=this.strict;this.strict=!0,this.parseClassId(e,t),this.parseClassSuper(e);var r=this.startNode(),i=!1;for(r.body=[],this.expect(T.braceL);!this.eat(T.braceR);){var s=this.parseClassElement(null!==e.superClass);s&&(r.body.push(s),"MethodDefinition"===s.type&&"constructor"===s.kind&&(i&&this.raise(s.start,"Duplicate constructor in the same class"),i=!0))}return e.body=this.finishNode(r,"ClassBody"),this.strict=n,this.finishNode(e,t?"ClassDeclaration":"ClassExpression")},U.parseClassElement=function(e){var t=this;if(this.eat(T.semi))return null;var n=this.startNode(),r=function(e,r){void 0===r&&(r=!1);var i=t.start,s=t.startLoc;return!!t.eatContextual(e)&&(!(t.type===T.parenL||r&&t.canInsertSemicolon())||(n.key&&t.unexpected(),n.computed=!1,n.key=t.startNodeAt(i,s),n.key.name=e,t.finishNode(n.key,"Identifier"),!1))};n.kind="method",n.static=r("static");var i=this.eat(T.star),s=!1;i||(this.options.ecmaVersion>=8&&r("async",!0)?(s=!0,i=this.options.ecmaVersion>=9&&this.eat(T.star)):r("get")?n.kind="get":r("set")&&(n.kind="set")),n.key||this.parsePropertyName(n);var a=n.key,o=!1;return n.computed||n.static||!("Identifier"===a.type&&"constructor"===a.name||"Literal"===a.type&&"constructor"===a.value)?n.static&&"Identifier"===a.type&&"prototype"===a.name&&this.raise(a.start,"Classes may not have a static property named prototype"):("method"!==n.kind&&this.raise(a.start,"Constructor can't have get/set modifier"),i&&this.raise(a.start,"Constructor can't be a generator"),s&&this.raise(a.start,"Constructor can't be an async method"),n.kind="constructor",o=e),this.parseClassMethod(n,i,s,o),"get"===n.kind&&0!==n.value.params.length&&this.raiseRecoverable(n.value.start,"getter should have no params"),"set"===n.kind&&1!==n.value.params.length&&this.raiseRecoverable(n.value.start,"setter should have exactly one param"),"set"===n.kind&&"RestElement"===n.value.params[0].type&&this.raiseRecoverable(n.value.params[0].start,"Setter cannot use rest params"),n},U.parseClassMethod=function(e,t,n,r){return e.value=this.parseMethod(t,n,r),this.finishNode(e,"MethodDefinition")},U.parseClassId=function(e,t){this.type===T.name?(e.id=this.parseIdent(),t&&this.checkLVal(e.id,2,!1)):(!0===t&&this.unexpected(),e.id=null)},U.parseClassSuper=function(e){e.superClass=this.eat(T._extends)?this.parseExprSubscripts():null},U.parseExport=function(e,t){if(this.next(),this.eat(T.star))return this.expectContextual("from"),this.type!==T.string&&this.unexpected(),e.source=this.parseExprAtom(),this.semicolon(),this.finishNode(e,"ExportAllDeclaration");if(this.eat(T._default)){var n;if(this.checkExport(t,"default",this.lastTokStart),this.type===T._function||(n=this.isAsyncFunction())){var r=this.startNode();this.next(),n&&this.next(),e.declaration=this.parseFunction(r,4|H,!1,n)}else if(this.type===T._class){var i=this.startNode();e.declaration=this.parseClass(i,"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!==T.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")},U.checkExport=function(e,t,n){e&&(D(e,t)&&this.raiseRecoverable(n,"Duplicate export '"+t+"'"),e[t]=!0)},U.checkPatternExport=function(e,t){var n=t.type;if("Identifier"===n)this.checkExport(e,t.name,t.start);else if("ObjectPattern"===n)for(var r=0,i=t.properties;r<i.length;r+=1){var s=i[r];this.checkPatternExport(e,s)}else if("ArrayPattern"===n)for(var a=0,o=t.elements;a<o.length;a+=1){var u=o[a];u&&this.checkPatternExport(e,u)}else"Property"===n?this.checkPatternExport(e,t.value):"AssignmentPattern"===n?this.checkPatternExport(e,t.left):"RestElement"===n?this.checkPatternExport(e,t.argument):"ParenthesizedExpression"===n&&this.checkPatternExport(e,t.expression)},U.checkVariableExport=function(e,t){if(e)for(var n=0,r=t;n<r.length;n+=1){var i=r[n];this.checkPatternExport(e,i.id)}},U.shouldParseExportStatement=function(){return"var"===this.type.keyword||"const"===this.type.keyword||"class"===this.type.keyword||"function"===this.type.keyword||this.isLet()||this.isAsyncFunction()},U.parseExportSpecifiers=function(e){var t=[],n=!0;for(this.expect(T.braceL);!this.eat(T.braceR);){if(n)n=!1;else if(this.expect(T.comma),this.afterTrailingComma(T.braceR))break;var r=this.startNode();r.local=this.parseIdent(!0),r.exported=this.eatContextual("as")?this.parseIdent(!0):r.local,this.checkExport(e,r.exported.name,r.exported.start),t.push(this.finishNode(r,"ExportSpecifier"))}return t},U.parseImport=function(e){return this.next(),this.type===T.string?(e.specifiers=j,e.source=this.parseExprAtom()):(e.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),e.source=this.type===T.string?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(e,"ImportDeclaration")},U.parseImportSpecifiers=function(){var e=[],t=!0;if(this.type===T.name){var n=this.startNode();if(n.local=this.parseIdent(),this.checkLVal(n.local,2),e.push(this.finishNode(n,"ImportDefaultSpecifier")),!this.eat(T.comma))return e}if(this.type===T.star){var r=this.startNode();return this.next(),this.expectContextual("as"),r.local=this.parseIdent(),this.checkLVal(r.local,2),e.push(this.finishNode(r,"ImportNamespaceSpecifier")),e}for(this.expect(T.braceL);!this.eat(T.braceR);){if(t)t=!1;else if(this.expect(T.comma),this.afterTrailingComma(T.braceR))break;var i=this.startNode();i.imported=this.parseIdent(!0),this.eatContextual("as")?i.local=this.parseIdent():(this.checkUnreserved(i.imported),i.local=i.imported),this.checkLVal(i.local,2),e.push(this.finishNode(i,"ImportSpecifier"))}return e},U.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)},U.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 q=O.prototype;q.toAssignable=function(e,t,n){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",n&&this.checkPatternErrors(n,!0);for(var r=0,i=e.properties;r<i.length;r+=1){var s=i[r];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",n&&this.checkPatternErrors(n,!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,n);break;case"MemberExpression":if(!t)break;default:this.raise(e.start,"Assigning to rvalue")}else n&&this.checkPatternErrors(n,!0);return e},q.toAssignableList=function(e,t){for(var n=e.length,r=0;r<n;r++){var i=e[r];i&&this.toAssignable(i,t)}if(n){var s=e[n-1];6===this.options.ecmaVersion&&t&&s&&"RestElement"===s.type&&"Identifier"!==s.argument.type&&this.unexpected(s.argument.start)}return e},q.parseSpread=function(e){var t=this.startNode();return this.next(),t.argument=this.parseMaybeAssign(!1,e),this.finishNode(t,"SpreadElement")},q.parseRestBinding=function(){var e=this.startNode();return this.next(),6===this.options.ecmaVersion&&this.type!==T.name&&this.unexpected(),e.argument=this.parseBindingAtom(),this.finishNode(e,"RestElement")},q.parseBindingAtom=function(){if(this.options.ecmaVersion>=6)switch(this.type){case T.bracketL:var e=this.startNode();return this.next(),e.elements=this.parseBindingList(T.bracketR,!0,!0),this.finishNode(e,"ArrayPattern");case T.braceL:return this.parseObj(!0)}return this.parseIdent()},q.parseBindingList=function(e,t,n){for(var r=[],i=!0;!this.eat(e);)if(i?i=!1:this.expect(T.comma),t&&this.type===T.comma)r.push(null);else{if(n&&this.afterTrailingComma(e))break;if(this.type===T.ellipsis){var s=this.parseRestBinding();this.parseBindingListItem(s),r.push(s),this.type===T.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),r.push(a)}return r},q.parseBindingListItem=function(e){return e},q.parseMaybeDefault=function(e,t,n){if(n=n||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(T.eq))return n;var r=this.startNodeAt(e,t);return r.left=n,r.right=this.parseMaybeAssign(),this.finishNode(r,"AssignmentPattern")},q.checkLVal=function(e,t,n){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"),n&&(D(n,e.name)&&this.raiseRecoverable(e.start,"Argument name clash"),n[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 r=0,i=e.properties;r<i.length;r+=1){var s=i[r];this.checkLVal(s,t,n)}break;case"Property":this.checkLVal(e.value,t,n);break;case"ArrayPattern":for(var a=0,o=e.elements;a<o.length;a+=1){var u=o[a];u&&this.checkLVal(u,t,n)}break;case"AssignmentPattern":this.checkLVal(e.left,t,n);break;case"RestElement":this.checkLVal(e.argument,t,n);break;case"ParenthesizedExpression":this.checkLVal(e.expression,t,n);break;default:this.raise(e.start,(t?"Binding":"Assigning to")+" rvalue")}};var Y=O.prototype;Y.checkPropClash=function(e,t,n){if(!(this.options.ecmaVersion>=9&&"SpreadElement"===e.type||this.options.ecmaVersion>=6&&(e.computed||e.method||e.shorthand))){var r,i=e.key;switch(i.type){case"Identifier":r=i.name;break;case"Literal":r=String(i.value);break;default:return}var s=e.kind;if(this.options.ecmaVersion>=6)"__proto__"===r&&"init"===s&&(t.proto&&(n?n.doubleProto<0&&(n.doubleProto=i.start):this.raiseRecoverable(i.start,"Redefinition of __proto__ property")),t.proto=!0);else{var a=t[r="$"+r];if(a)("init"===s?this.strict&&a.init||a.get||a.set:a.init||a[s])&&this.raiseRecoverable(i.start,"Redefinition of property");else a=t[r]={init:!1,get:!1,set:!1};a[s]=!0}}},Y.parseExpression=function(e,t){var n=this.start,r=this.startLoc,i=this.parseMaybeAssign(e,t);if(this.type===T.comma){var s=this.startNodeAt(n,r);for(s.expressions=[i];this.eat(T.comma);)s.expressions.push(this.parseMaybeAssign(e,t));return this.finishNode(s,"SequenceExpression")}return i},Y.parseMaybeAssign=function(e,t,n){if(this.isContextual("yield")){if(this.inGenerator)return this.parseYield(e);this.exprAllowed=!1}var r=!1,i=-1,s=-1;t?(i=t.parenthesizedAssign,s=t.trailingComma,t.parenthesizedAssign=t.trailingComma=-1):(t=new G,r=!0);var a=this.start,o=this.startLoc;this.type!==T.parenL&&this.type!==T.name||(this.potentialArrowAt=this.start);var u=this.parseMaybeConditional(e,t);if(n&&(u=n.call(this,u,a,o)),this.type.isAssign){var l=this.startNodeAt(a,o);return l.operator=this.value,l.left=this.type===T.eq?this.toAssignable(u,!1,t):u,r||(t.parenthesizedAssign=t.trailingComma=t.doubleProto=-1),t.shorthandAssign>=l.left.start&&(t.shorthandAssign=-1),this.checkLVal(u),this.next(),l.right=this.parseMaybeAssign(e),this.finishNode(l,"AssignmentExpression")}return r&&this.checkExpressionErrors(t,!0),i>-1&&(t.parenthesizedAssign=i),s>-1&&(t.trailingComma=s),u},Y.parseMaybeConditional=function(e,t){var n=this.start,r=this.startLoc,i=this.parseExprOps(e,t);if(this.checkExpressionErrors(t))return i;if(this.eat(T.question)){var s=this.startNodeAt(n,r);return s.test=i,s.consequent=this.parseMaybeAssign(),this.expect(T.colon),s.alternate=this.parseMaybeAssign(e),this.finishNode(s,"ConditionalExpression")}return i},Y.parseExprOps=function(e,t){var n=this.start,r=this.startLoc,i=this.parseMaybeUnary(t,!1);return this.checkExpressionErrors(t)||i.start===n&&"ArrowFunctionExpression"===i.type?i:this.parseExprOp(i,n,r,-1,e)},Y.parseExprOp=function(e,t,n,r,i){var s=this.type.binop;if(null!=s&&(!i||this.type!==T._in)&&s>r){var a=this.type===T.logicalOR||this.type===T.logicalAND,o=this.value;this.next();var u=this.start,l=this.startLoc,h=this.parseExprOp(this.parseMaybeUnary(null,!1),u,l,s,i),c=this.buildBinary(t,n,e,h,o,a);return this.parseExprOp(c,t,n,r,i)}return e},Y.buildBinary=function(e,t,n,r,i,s){var a=this.startNodeAt(e,t);return a.left=n,a.operator=i,a.right=r,this.finishNode(a,s?"LogicalExpression":"BinaryExpression")},Y.parseMaybeUnary=function(e,t){var n,r=this.start,i=this.startLoc;if(this.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))n=this.parseAwait(),t=!0;else if(this.type.prefix){var s=this.startNode(),a=this.type===T.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,n=this.finishNode(s,a?"UpdateExpression":"UnaryExpression")}else{if(n=this.parseExprSubscripts(e),this.checkExpressionErrors(e))return n;for(;this.type.postfix&&!this.canInsertSemicolon();){var o=this.startNodeAt(r,i);o.operator=this.value,o.prefix=!1,o.argument=n,this.checkLVal(n),this.next(),n=this.finishNode(o,"UpdateExpression")}}return!t&&this.eat(T.starstar)?this.buildBinary(r,i,n,this.parseMaybeUnary(null,!1),"**",!1):n},Y.parseExprSubscripts=function(e){var t=this.start,n=this.startLoc,r=this.parseExprAtom(e);if("ArrowFunctionExpression"===r.type&&")"!==this.input.slice(this.lastTokStart,this.lastTokEnd))return r;var i=this.parseSubscripts(r,t,n);return e&&"MemberExpression"===i.type&&(e.parenthesizedAssign>=i.start&&(e.parenthesizedAssign=-1),e.parenthesizedBind>=i.start&&(e.parenthesizedBind=-1)),i},Y.parseSubscripts=function(e,t,n,r){for(var i=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,n,r,i);if(s===e||"ArrowFunctionExpression"===s.type)return s;e=s}},Y.parseSubscript=function(e,t,n,r,i){var s=this.eat(T.bracketL);if(s||this.eat(T.dot)){var a=this.startNodeAt(t,n);a.object=e,a.property=s?this.parseExpression():this.parseIdent("never"!==this.options.allowReserved),a.computed=!!s,s&&this.expect(T.bracketR),e=this.finishNode(a,"MemberExpression")}else if(!r&&this.eat(T.parenL)){var o=new G,u=this.yieldPos,l=this.awaitPos,h=this.awaitIdentPos;this.yieldPos=0,this.awaitPos=0,this.awaitIdentPos=0;var c=this.parseExprList(T.parenR,this.options.ecmaVersion>=8,!1,o);if(i&&!this.canInsertSemicolon()&&this.eat(T.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=u,this.awaitPos=l,this.awaitIdentPos=h,this.parseArrowExpression(this.startNodeAt(t,n),c,!0);this.checkExpressionErrors(o,!0),this.yieldPos=u||this.yieldPos,this.awaitPos=l||this.awaitPos,this.awaitIdentPos=h||this.awaitIdentPos;var p=this.startNodeAt(t,n);p.callee=e,p.arguments=c,e=this.finishNode(p,"CallExpression")}else if(this.type===T.backQuote){var d=this.startNodeAt(t,n);d.tag=e,d.quasi=this.parseTemplate({isTagged:!0}),e=this.finishNode(d,"TaggedTemplateExpression")}return e},Y.parseExprAtom=function(e){this.type===T.slash&&this.readRegexp();var t,n=this.potentialArrowAt===this.start;switch(this.type){case T._super:return this.allowSuper||this.raise(this.start,"'super' keyword outside a method"),t=this.startNode(),this.next(),this.type!==T.parenL||this.allowDirectSuper||this.raise(t.start,"super() call outside constructor of a subclass"),this.type!==T.dot&&this.type!==T.bracketL&&this.type!==T.parenL&&this.unexpected(),this.finishNode(t,"Super");case T._this:return t=this.startNode(),this.next(),this.finishNode(t,"ThisExpression");case T.name:var r=this.start,i=this.startLoc,s=this.containsEsc,a=this.parseIdent(!1);if(this.options.ecmaVersion>=8&&!s&&"async"===a.name&&!this.canInsertSemicolon()&&this.eat(T._function))return this.parseFunction(this.startNodeAt(r,i),0,!1,!0);if(n&&!this.canInsertSemicolon()){if(this.eat(T.arrow))return this.parseArrowExpression(this.startNodeAt(r,i),[a],!1);if(this.options.ecmaVersion>=8&&"async"===a.name&&this.type===T.name&&!s)return a=this.parseIdent(!1),!this.canInsertSemicolon()&&this.eat(T.arrow)||this.unexpected(),this.parseArrowExpression(this.startNodeAt(r,i),[a],!0)}return a;case T.regexp:var o=this.value;return(t=this.parseLiteral(o.value)).regex={pattern:o.pattern,flags:o.flags},t;case T.num:case T.string:return this.parseLiteral(this.value);case T._null:case T._true:case T._false:return(t=this.startNode()).value=this.type===T._null?null:this.type===T._true,t.raw=this.type.keyword,this.next(),this.finishNode(t,"Literal");case T.parenL:var u=this.start,l=this.parseParenAndDistinguishExpression(n);return e&&(e.parenthesizedAssign<0&&!this.isSimpleAssignTarget(l)&&(e.parenthesizedAssign=u),e.parenthesizedBind<0&&(e.parenthesizedBind=u)),l;case T.bracketL:return t=this.startNode(),this.next(),t.elements=this.parseExprList(T.bracketR,!0,!0,e),this.finishNode(t,"ArrayExpression");case T.braceL:return this.parseObj(!1,e);case T._function:return t=this.startNode(),this.next(),this.parseFunction(t,0);case T._class:return this.parseClass(this.startNode(),!1);case T._new:return this.parseNew();case T.backQuote:return this.parseTemplate();case T._import:return this.options.ecmaVersion>=11?this.parseExprImport():this.unexpected();default:this.unexpected()}},Y.parseExprImport=function(){var e=this.startNode();if(this.next(),this.type===T.parenL)return this.parseDynamicImport(e);this.unexpected()},Y.parseDynamicImport=function(e){if(this.next(),e.source=this.parseMaybeAssign(),!this.eat(T.parenR)){var t=this.start;this.eat(T.comma)&&this.eat(T.parenR)?this.raiseRecoverable(t,"Trailing comma is not allowed in import()"):this.unexpected(t)}return this.finishNode(e,"ImportExpression")},Y.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")},Y.parseParenExpression=function(){this.expect(T.parenL);var e=this.parseExpression();return this.expect(T.parenR),e},Y.parseParenAndDistinguishExpression=function(e){var t,n=this.start,r=this.startLoc,i=this.options.ecmaVersion>=8;if(this.options.ecmaVersion>=6){this.next();var s,a=this.start,o=this.startLoc,u=[],l=!0,h=!1,c=new G,p=this.yieldPos,d=this.awaitPos;for(this.yieldPos=0,this.awaitPos=0;this.type!==T.parenR;){if(l?l=!1:this.expect(T.comma),i&&this.afterTrailingComma(T.parenR,!0)){h=!0;break}if(this.type===T.ellipsis){s=this.start,u.push(this.parseParenItem(this.parseRestBinding())),this.type===T.comma&&this.raise(this.start,"Comma is not permitted after the rest element");break}u.push(this.parseMaybeAssign(!1,c,this.parseParenItem))}var m=this.start,f=this.startLoc;if(this.expect(T.parenR),e&&!this.canInsertSemicolon()&&this.eat(T.arrow))return this.checkPatternErrors(c,!1),this.checkYieldAwaitInDefaultParams(),this.yieldPos=p,this.awaitPos=d,this.parseParenArrowList(n,r,u);u.length&&!h||this.unexpected(this.lastTokStart),s&&this.unexpected(s),this.checkExpressionErrors(c,!0),this.yieldPos=p||this.yieldPos,this.awaitPos=d||this.awaitPos,u.length>1?((t=this.startNodeAt(a,o)).expressions=u,this.finishNodeAt(t,"SequenceExpression",m,f)):t=u[0]}else t=this.parseParenExpression();if(this.options.preserveParens){var g=this.startNodeAt(n,r);return g.expression=t,this.finishNode(g,"ParenthesizedExpression")}return t},Y.parseParenItem=function(e){return e},Y.parseParenArrowList=function(e,t,n){return this.parseArrowExpression(this.startNodeAt(e,t),n)};var Z=[];Y.parseNew=function(){this.containsEsc&&this.raiseRecoverable(this.start,"Escape sequence in keyword new");var e=this.startNode(),t=this.parseIdent(!0);if(this.options.ecmaVersion>=6&&this.eat(T.dot)){e.meta=t;var n=this.containsEsc;return e.property=this.parseIdent(!0),("target"!==e.property.name||n)&&this.raiseRecoverable(e.property.start,"The only valid meta property for new is new.target"),this.inNonArrowFunction()||this.raiseRecoverable(e.start,"new.target can only be used in functions"),this.finishNode(e,"MetaProperty")}var r=this.start,i=this.startLoc,s=this.type===T._import;return e.callee=this.parseSubscripts(this.parseExprAtom(),r,i,!0),s&&"ImportExpression"===e.callee.type&&this.raise(r,"Cannot use new with import()"),this.eat(T.parenL)?e.arguments=this.parseExprList(T.parenR,this.options.ecmaVersion>=8,!1):e.arguments=Z,this.finishNode(e,"NewExpression")},Y.parseTemplateElement=function(e){var t=e.isTagged,n=this.startNode();return this.type===T.invalidTemplate?(t||this.raiseRecoverable(this.start,"Bad escape sequence in untagged template literal"),n.value={raw:this.value,cooked:null}):n.value={raw:this.input.slice(this.start,this.end).replace(/\r\n?/g,"\n"),cooked:this.value},this.next(),n.tail=this.type===T.backQuote,this.finishNode(n,"TemplateElement")},Y.parseTemplate=function(e){void 0===e&&(e={});var t=e.isTagged;void 0===t&&(t=!1);var n=this.startNode();this.next(),n.expressions=[];var r=this.parseTemplateElement({isTagged:t});for(n.quasis=[r];!r.tail;)this.type===T.eof&&this.raise(this.pos,"Unterminated template literal"),this.expect(T.dollarBraceL),n.expressions.push(this.parseExpression()),this.expect(T.braceR),n.quasis.push(r=this.parseTemplateElement({isTagged:t}));return this.next(),this.finishNode(n,"TemplateLiteral")},Y.isAsyncProp=function(e){return!e.computed&&"Identifier"===e.key.type&&"async"===e.key.name&&(this.type===T.name||this.type===T.num||this.type===T.string||this.type===T.bracketL||this.type.keyword||this.options.ecmaVersion>=9&&this.type===T.star)&&!v.test(this.input.slice(this.lastTokEnd,this.start))},Y.parseObj=function(e,t){var n=this.startNode(),r=!0,i={};for(n.properties=[],this.next();!this.eat(T.braceR);){if(r)r=!1;else if(this.expect(T.comma),this.options.ecmaVersion>=5&&this.afterTrailingComma(T.braceR))break;var s=this.parseProperty(e,t);e||this.checkPropClash(s,i,t),n.properties.push(s)}return this.finishNode(n,e?"ObjectPattern":"ObjectExpression")},Y.parseProperty=function(e,t){var n,r,i,s,a=this.startNode();if(this.options.ecmaVersion>=9&&this.eat(T.ellipsis))return e?(a.argument=this.parseIdent(!1),this.type===T.comma&&this.raise(this.start,"Comma is not