sval/dist/sval.min.js

A javascript interpreter written in javascript

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r.static=o,!i&&8<=t&&this.eatContextual("async")&&(!this.isClassElementNameStart()&&this.type!==v.star||this.canInsertSemicolon()?i="async":s=!0),!i&&(9<=t||!s)&&this.eat(v.star)&&(n=!0),i||s||n||(o=this.value,(this.eatContextual("get")||this.eatContextual("set"))&&(this.isClassElementNameStart()?a=o:i=o)),i?(r.computed=!1,r.key=this.startNodeAt(this.lastTokStart,this.lastTokStartLoc),r.key.name=i,this.finishNode(r.key,"Identifier")):this.parseClassElementName(r),t<13||this.type===v.parenL||"method"!==a||n||s?(i=(o=!r.static&&je(r,"constructor"))&&e,o&&"method"!==a&&this.raise(r.key.start,"Constructor can't have get/set modifier"),r.kind=o?"constructor":a,this.parseClassMethod(r,n,s,i)):this.parseClassField(r),r},e.isClassElementNameStart=function(){return this.type===v.name||this.type===v.privateId||this.type===v.num||this.type===v.string||this.type===v.bracketL||this.type.keyword},e.parseClassElementName=function(e){this.type===v.privateId?("constructor"===this.value&&this.raise(this.start,"Classes can't have an element named '#constructor'"),e.computed=!1,e.key=this.parsePrivateIdent()):this.parsePropertyName(e)},e.parseClassMethod=function(e,t,r,i){var n=e.key,n=("constructor"===e.kind?(t&&this.raise(n.start,"Constructor can't be a generator"),r&&this.raise(n.start,"Constructor can't be an async method")):e.static&&je(e,"prototype")&&this.raise(n.start,"Classes may not have a static property named prototype"),e.value=this.parseMethod(t,r,i));return"get"===e.kind&&0!==n.params.length&&this.raiseRecoverable(n.start,"getter should have no params"),"set"===e.kind&&1!==n.params.length&&this.raiseRecoverable(n.start,"setter should have exactly one param"),"set"===e.kind&&"RestElement"===n.params[0].type&&this.raiseRecoverable(n.params[0].start,"Setter cannot use rest params"),this.finishNode(e,"MethodDefinition")},e.parseClassField=function(e){var t,r;return je(e,"constructor")?this.raise(e.key.start,"Classes can't have a field named 'constructor'"):e.static&&je(e,"prototype")&&this.raise(e.key.start,"Classes can't have a static field named 'prototype'"),this.eat(v.eq)?(r=(t=this.currentThisScope()).inClassFieldInit,t.inClassFieldInit=!0,e.value=this.parseMaybeAssign(),t.inClassFieldInit=r):e.value=null,this.semicolon(),this.finishNode(e,"PropertyDefinition")},e.parseClassStaticBlock=function(e){e.body=[];var t=this.labels;for(this.labels=[],this.enterScope(320);this.type!==v.braceR;){var r=this.parseStatement(null);e.body.push(r)}return this.next(),this.exitScope(),this.labels=t,this.finishNode(e,"StaticBlock")},e.parseClassId=function(e,t){this.type===v.name?(e.id=this.parseIdent(),t&&this.checkLValSimple(e.id,2,!1)):(!0===t&&this.unexpected(),e.id=null)},e.parseClassSuper=function(e){e.superClass=this.eat(v._extends)?this.parseExprSubscripts(null,!1):null},e.enterClassBody=function(){var e={declared:Object.create(null),used:[]};return this.privateNameStack.push(e),e.declared},e.exitClassBody=function(){var e=this.privateNameStack.pop(),t=e.declared,r=e.used;if(this.options.checkPrivateFields)for(var e=this.privateNameStack.length,i=0===e?null:this.privateNameStack[e-1],n=0;n<r.length;++n){var s=r[n];we(t,s.name)||(i?i.used.push(s):this.raiseRecoverable(s.start,"Private field '#"+s.name+"' must be declared in an enclosing class"))}},e.parseExportAllDeclaration=function(e,t){return 11<=this.options.ecmaVersion&&(this.eatContextual("as")?(e.exported=this.parseModuleExportName(),this.checkExport(t,e.exported,this.lastTokStart)):e.exported=null),this.expectContextual("from"),this.type!==v.string&&this.unexpected(),e.source=this.parseExprAtom(),16<=this.options.ecmaVersion&&(e.attributes=this.parseWithClause()),this.semicolon(),this.finishNode(e,"ExportAllDeclaration")},e.parseExport=function(e,t){if(this.next(),this.eat(v.star))return this.parseExportAllDeclaration(e,t);if(this.eat(v._default))return this.checkExport(t,"default",this.lastTokStart),e.declaration=this.parseExportDefaultDeclaration(),this.finishNode(e,"ExportDefaultDeclaration");if(this.shouldParseExportStatement())e.declaration=this.parseExportDeclaration(e),"VariableDeclaration"===e.declaration.type?this.checkVariableExport(t,e.declaration.declarations):this.checkExport(t,e.declaration.id,e.declaration.id.start),e.specifiers=[],e.source=null;else{if(e.declaration=null,e.specifiers=this.parseExportSpecifiers(t),this.eatContextual("from"))this.type!==v.string&&this.unexpected(),e.source=this.parseExprAtom(),16<=this.options.ecmaVersion&&(e.attributes=this.parseWithClause());else{for(var r=0,i=e.specifiers;r<i.length;r+=1){var n=i[r];this.checkUnreserved(n.local),this.checkLocalExport(n.local),"Literal"===n.local.type&&this.raise(n.local.start,"A string literal cannot be used as an exported binding without `from`.")}e.source=null}this.semicolon()}return this.finishNode(e,"ExportNamedDeclaration")},e.parseExportDeclaration=function(e){return this.parseStatement(null)},e.parseExportDefaultDeclaration=function(){var e,t;return this.type===v._function||(t=this.isAsyncFunction())?(e=this.startNode(),this.next(),t&&this.next(),this.parseFunction(e,4|Me,!1,t)):this.type===v._class?(e=this.startNode(),this.parseClass(e,"nullableID")):(t=this.parseMaybeAssign(),this.semicolon(),t)},e.checkExport=function(e,t,r){e&&("string"!=typeof t&&(t="Identifier"===t.type?t.name:t.value),we(e,t)&&this.raiseRecoverable(r,"Duplicate export '"+t+"'"),e[t]=!0)},e.checkPatternExport=function(e,t){var r=t.type;if("Identifier"===r)this.checkExport(e,t,t.start);else if("ObjectPattern"===r)for(var i=0,n=t.properties;i<n.length;i+=1){var s=n[i];this.checkPatternExport(e,s)}else if("ArrayPattern"===r)for(var a=0,o=t.elements;a<o.length;a+=1){var c=o[a];c&&this.checkPatternExport(e,c)}else"Property"===r?this.checkPatternExport(e,t.value):"AssignmentPattern"===r?this.checkPatternExport(e,t.left):"RestElement"===r&&this.checkPatternExport(e,t.argument)},e.checkVariableExport=function(e,t){if(e)for(var r=0,i=t;r<i.length;r+=1){var n=i[r];this.checkPatternExport(e,n.id)}},e.shouldParseExportStatement=function(){return"var"===this.type.keyword||"const"===this.type.keyword||"class"===this.type.keyword||"function"===this.type.keyword||this.isLet()||this.isAsyncFunction()},e.parseExportSpecifier=function(e){var t=this.startNode();return t.local=this.parseModuleExportName(),t.exported=this.eatContextual("as")?this.parseModuleExportName():t.local,this.checkExport(e,t.exported,t.exported.start),this.finishNode(t,"ExportSpecifier")},e.parseExportSpecifiers=function(e){var t=[],r=!0;for(this.expect(v.braceL);!this.eat(v.braceR);){if(r)r=!1;else if(this.expect(v.comma),this.afterTrailingComma(v.braceR))break;t.push(this.parseExportSpecifier(e))}return t},e.parseImport=function(e){return this.next(),this.type===v.string?(e.specifiers=Oe,e.source=this.parseExprAtom()):(e.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),e.source=this.type===v.string?this.parseExprAtom():this.unexpected()),16<=this.options.ecmaVersion&&(e.attributes=this.parseWithClause()),this.semicolon(),this.finishNode(e,"ImportDeclaration")},e.parseImportSpecifier=function(){var e=this.startNode();return e.imported=this.parseModuleExportName(),this.eatContextual("as")?e.local=this.parseIdent():(this.checkUnreserved(e.imported),e.local=e.imported),this.checkLValSimple(e.local,2),this.finishNode(e,"ImportSpecifier")},e.parseImportDefaultSpecifier=function(){var e=this.startNode();return e.local=this.parseIdent(),this.checkLValSimple(e.local,2),this.finishNode(e,"ImportDefaultSpecifier")},e.parseImportNamespaceSpecifier=function(){var e=this.startNode();return this.next(),this.expectContextual("as"),e.local=this.parseIdent(),this.checkLValSimple(e.local,2),this.finishNode(e,"ImportNamespaceSpecifier")},e.parseImportSpecifiers=function(){var e=[],t=!0;if(this.type!==v.name||(e.push(this.parseImportDefaultSpecifier()),this.eat(v.comma)))if(this.type===v.star)e.push(this.parseImportNamespaceSpecifier());else for(this.expect(v.braceL);!this.eat(v.braceR);){if(t)t=!1;else if(this.expect(v.comma),this.afterTrailingComma(v.braceR))break;e.push(this.parseImportSpecifier())}return e},e.parseWithClause=function(){var e=[];if(this.eat(v._with)){this.expect(v.braceL);for(var t={},r=!0;!this.eat(v.braceR);){if(r)r=!1;else if(this.expect(v.comma),this.afterTrailingComma(v.braceR))break;var i=this.parseImportAttribute(),n="Identifier"===i.key.type?i.key.name:i.key.value;we(t,n)&&this.raiseRecoverable(i.key.start,"Duplicate attribute key '"+n+"'"),t[n]=!0,e.push(i)}}return e},e.parseImportAttribute=function(){var e=this.startNode();return e.key=this.type===v.string?this.parseExprAtom():this.parseIdent("never"!==this.options.allowReserved),this.expect(v.colon),this.type!==v.string&&this.unexpected(),e.value=this.parseExprAtom(),this.finishNode(e,"ImportAttribute")},e.parseModuleExportName=function(){var e;return 13<=this.options.ecmaVersion&&this.type===v.string?(e=this.parseLiteral(this.value),Ie.test(e.value)&&this.raise(e.start,"An export name cannot include a lone surrogate."),e):this.parseIdent(!0)},e.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)},e.isDirectiveCandidate=function(e){return 5<=this.options.ecmaVersion&&"ExpressionStatement"===e.type&&"Literal"===e.expression.type&&"string"==typeof e.expression.value&&('"'===this.input[e.start]||"'"===this.input[e.start])};function u(e,t,r,i,n){this.token=e,this.isExpr=!!t,this.preserveSpace=!!r,this.override=i,this.generator=!!n}var e=l.prototype,d=(e.toAssignable=function(e,t,r){if(6<=this.options.ecmaVersion&&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"AssignmentPattern":case"RestElement":break;case"ObjectExpression":e.type="ObjectPattern",r&&this.checkPatternErrors(r,!0);for(var i=0,n=e.properties;i<n.length;i+=1){var s=n[i];this.toAssignable(s,t),"RestElement"!==s.type||"ArrayPattern"!==s.argument.type&&"ObjectPattern"!==s.argument.type||this.raise(s.argument.start,"Unexpected token")}break;case"Property":"init"!==e.kind&&this.raise(e.key.start,"Object pattern can't contain getter or setter"),this.toAssignable(e.value,t);break;case"ArrayExpression":e.type="ArrayPattern",r&&this.checkPatternErrors(r,!0),this.toAssignableList(e.elements,t);break;case"SpreadElement":e.type="RestElement",this.toAssignable(e.argument,t),"AssignmentPattern"===e.argument.type&&this.raise(e.argument.start,"Rest elements cannot have a default value");break;case"AssignmentExpression":"="!==e.operator&&this.raise(e.left.end,"Only '=' operator can be used for specifying default value."),e.type="AssignmentPattern",delete e.operator,this.toAssignable(e.left,t);break;case"ParenthesizedExpression":this.toAssignable(e.expression,t,r);break;case"ChainExpression":this.raiseRecoverable(e.start,"Optional chaining cannot appear in left-hand side");break;case"MemberExpression":if(!t)break;default:this.raise(e.start,"Assigning to rvalue")}else r&&this.checkPatternErrors(r,!0);return e},e.toAssignableList=function(e,t){for(var r,i=e.length,n=0;n<i;n++){var s=e[n];s&&this.toAssignable(s,t)}return i&&(r=e[i-1],6===this.options.ecmaVersion)&&t&&r&&"RestElement"===r.type&&"Identifier"!==r.argument.type&&this.unexpected(r.argument.start),e},e.parseSpread=function(e){var t=this.startNode();return this.next(),t.argument=this.parseMaybeAssign(!1,e),this.finishNode(t,"SpreadElement")},e.parseRestBinding=function(){var e=this.startNode();return this.next(),6===this.options.ecmaVersion&&this.type!==v.name&&this.unexpected(),e.argument=this.parseBindingAtom(),this.finishNode(e,"RestElement")},e.parseBindingAtom=function(){if(6<=this.options.ecmaVersion)switch(this.type){case v.bracketL:var e=this.startNode();return this.next(),e.elements=this.parseBindingList(v.bracketR,!0,!0),this.finishNode(e,"ArrayPattern");case v.braceL:return this.parseObj(!0)}return this.parseIdent()},e.parseBindingList=function(e,t,r,i){for(var n=[],s=!0;!this.eat(e);)if(s?s=!1:this.expect(v.comma),t&&this.type===v.comma)n.push(null);else{if(r&&this.afterTrailingComma(e))break;if(this.type===v.ellipsis){var a=this.parseRestBinding();this.parseBindingListItem(a),n.push(a),this.type===v.comma&&this.raiseRecoverable(this.start,"Comma is not permitted after the rest element"),this.expect(e);break}n.push(this.parseAssignableListItem(i))}return n},e.parseAssignableListItem=function(e){var t=this.parseMaybeDefault(this.start,this.startLoc);return this.parseBindingListItem(t),t},e.parseBindingListItem=function(e){return e},e.parseMaybeDefault=function(e,t,r){return r=r||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(v.eq)?r:((e=this.startNodeAt(e,t)).left=r,e.right=this.parseMaybeAssign(),this.finishNode(e,"AssignmentPattern"))},e.checkLValSimple=function(e,t,r){var i=0!==(t=void 0===t?0:t);switch(e.type){case"Identifier":this.strict&&this.reservedWordsStrictBind.test(e.name)&&this.raiseRecoverable(e.start,(i?"Binding ":"Assigning to ")+e.name+" in strict mode"),i&&(2===t&&"let"===e.name&&this.raiseRecoverable(e.start,"let is disallowed as a lexically bound name"),r&&(we(r,e.name)&&this.raiseRecoverable(e.start,"Argument name clash"),r[e.name]=!0),5!==t)&&this.declareName(e.name,t,e.start);break;case"ChainExpression