webpack.javascript.JavascriptParser

• {ParserClass}

new JavascriptParser(sourceType?, options?): void

• sourceType {"module"|"auto"|"script"} default source type
• options <object> parser options
• Returns: <JavascriptParser>

blockPreWalkClassDeclaration(statement): void

• statement {ClassDeclaration|MaybeNamedClassDeclaration} class declaration
• Returns: {void}

blockPreWalkExportDefaultDeclaration(statement): void

• statement {ExportDefaultDeclaration} statement
• Returns: {void}

blockPreWalkExportNamedDeclaration(statement): void

• statement {ExportNamedDeclaration} statement
• Returns: {void}

blockPreWalkExpressionStatement(statement): void

• statement {ExpressionStatement} expression statement
• Returns: {void}

blockPreWalkStatement(statement): void

• statement {ClassDeclaration|MaybeNamedClassDeclaration|FunctionDeclaration|MaybeNamedFunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration} statement
• Returns: {void}

blockPreWalkStatements(statements): void

• statements {ClassDeclaration|FunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration[]} statements
• Returns: {void}

Block pre walking iterates the scope for block variable declarations

blockPreWalkVariableDeclaration(statement): void

• statement {VariableDeclaration} variable declaration
• Returns: {void}

callHooksForExpression(hookMap, expr, ...args): void

• hookMap {HookMap< SyncBailHook< T, R, UnsetAdditionalOptions > >} hooks the should be called
• expr {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|Super} expression
• args {AsArray< T >} args for the hook
• Returns: <undefined> result of hook

callHooksForExpressionWithFallback(hookMap, expr, fallback, defined, ...args): void

• hookMap {HookMap< SyncBailHook< T, R, UnsetAdditionalOptions > >} hooks the should be called
• expr {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|Super} expression info
• fallback <object> | <undefined> callback when variable in not handled by hooks
• defined <object> | <undefined> callback when variable is defined
• args {AsArray< T >} args for the hook
• Returns: <undefined> result of hook

callHooksForInfo(hookMap, info, ...args): void

• hookMap {HookMap< SyncBailHook< T, R, UnsetAdditionalOptions > >} hooks that should be called
• info {ExportedVariableInfo} variable info
• args {AsArray< T >} args for the hook
• Returns: <undefined> result of hook

callHooksForInfoWithFallback(hookMap, info, fallback, defined, ...args): void

• hookMap {HookMap< SyncBailHook< T, R, UnsetAdditionalOptions > >} hooks the should be called
• info {ExportedVariableInfo} variable info
• fallback <object> | <undefined> callback when variable in not handled by hooks
• defined <object> | <undefined> callback when variable is defined
• args {AsArray< T >} args for the hook
• Returns: <undefined> result of hook

callHooksForName(hookMap, name, ...args): void

• hookMap {HookMap< SyncBailHook< T, R, UnsetAdditionalOptions > >} hooks the should be called
• name <string> key in map
• args {AsArray< T >} args for the hook
• Returns: <undefined> result of hook

callHooksForNameWithFallback(hookMap, name, fallback, defined, ...args): void

• hookMap {HookMap< SyncBailHook< T, R, UnsetAdditionalOptions > >} hooks the should be called
• name <string> key in map
• fallback <object> | <undefined> callback when variable in not handled by hooks
• defined <object> | <undefined> callback when variable is defined
• args {AsArray< T >} args for the hook
• Returns: <undefined> result of hook

defineVariable(name): void

destructuringAssignmentPropertiesFor(node): Set< DestructuringAssignmentProperty > | undefined

detectMode(statements): void

• statements {ClassDeclaration|FunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration|Directive[]} statements
• Returns: {void}

enterArrayPattern(pattern, onIdent): void

• pattern {ArrayPattern} object pattern
• onIdent <object> callback
• Returns: {void}

enterAssignmentPattern(pattern, onIdent): void

• pattern {AssignmentPattern} object pattern
• onIdent <object> callback
• Returns: {void}

enterDeclaration(declaration, onIdent): void

enterDestructuringAssignment(pattern, expression): undefined

enterIdentifier(pattern, onIdent): void

• pattern {Identifier} identifier pattern
• onIdent <object> callback
• Returns: {void}

enterObjectPattern(pattern, onIdent): void

• pattern {ObjectPattern} object pattern
• onIdent <object> callback
• Returns: {void}

enterPattern(pattern, onIdent): void

• pattern {Property|Identifier|MemberExpression|ObjectPattern|ArrayPattern|RestElement|AssignmentPattern} pattern
• onIdent <object> on ident callback
• Returns: {void}

enterPatterns(patterns, onIdent): void

enterRestElement(pattern, onIdent): void

• pattern {RestElement} object pattern
• onIdent <object> callback
• Returns: {void}

evaluate(source): BasicEvaluatedExpression

evaluatedVariable(tagInfo): void

• tagInfo {TagInfo} tag info
• Returns: {VariableInfo} variable info

evaluateExpression(expression): void

• expression {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|PrivateIdentifier|SpreadElement|Super} expression node
• Returns: <BasicEvaluatedExpression> evaluation result

extractMemberExpressionChain(expression): void

• expression {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|Super} a member expression
• Returns: <object> member names (reverse order) and remaining object

getComments(range): void

• range {Tuple< number, number >} range
• Returns: <CommentJavascriptParser[]> comments in the range

getFreeInfoFromVariable(varName): object | undefined

getMemberExpressionInfo(expression, allowedTypes): void

• expression {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|Super} a member expression
• allowedTypes <number> which types should be returned, presented in bit mask
• Returns: <CallExpressionInfo> | <undefined> expression info

getNameForExpression(expression): object | undefined

getNameInfoFromVariable(varName): object | undefined

getRenameIdentifier(expr): void

• expr {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|SpreadElement} expression
• Returns: <string> | <undefined> identifier

getTagData(name, tag): Record< string, any > | TopLevelSymbol | HarmonySettings | ImportSettings | CommonJsImportSettings | CompatibilitySettings | HarmonySpecifierGuards | undefined

getVariableInfo(name): ExportedVariableInfo

inBlockScope(fn, inExecutedPath?): void

inClassScope(hasThis, params, fn): void

inFunctionScope(hasThis, params, fn): void

inScope(params, fn): void

isAsiPosition(pos): boolean

isPure(expr, commentsStartPos): boolean

isStatementLevelExpression(expr): boolean

isVariableDefined(name): boolean

modulePreWalkExportAllDeclaration(statement): void

• statement {ExportAllDeclaration} statement
• Returns: {void}

modulePreWalkExportNamedDeclaration(statement): void

• statement {ExportNamedDeclaration} statement
• Returns: {void}

modulePreWalkImportDeclaration(statement): void

• statement {ImportDeclaration} statement
• Returns: {void}

modulePreWalkStatements(statements): void

• statements {ClassDeclaration|FunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration[]} statements
• Returns: {void}

Module pre walking iterates the scope for import entries

parse(source, state): void

• source {string|Buffer< ArrayBufferLike >|PreparsedAst} the source to parse
• state <ParserState> the parser state
• Returns: <ParserState> the parser state

parseCalculatedString(expression): CalculatedStringResult

parseCommentOptions(range): void

• range {Tuple< number, number >} range of the comment
• Returns: <object> result

parseString(expression): string

preWalkAssignmentExpression(expression): void

• expression {AssignmentExpression} assignment expression
• Returns: {void}

preWalkBlockStatement(statement): void

• statement {BlockStatement} block statement
• Returns: {void}

preWalkCatchClause(catchClause): void

• catchClause {CatchClause} catch clause
• Returns: {void}

preWalkDoWhileStatement(statement): void

• statement {DoWhileStatement} do while statement
• Returns: {void}

preWalkForInStatement(statement): void

• statement {ForInStatement} for statement
• Returns: {void}

preWalkForOfStatement(statement): void

• statement {ForOfStatement} statement
• Returns: {void}

preWalkForStatement(statement): void

• statement {ForStatement} for statement
• Returns: {void}

preWalkFunctionDeclaration(statement): void

• statement {FunctionDeclaration|MaybeNamedFunctionDeclaration} function declaration
• Returns: {void}

preWalkIfStatement(statement): void

• statement {IfStatement} if statement
• Returns: {void}

preWalkLabeledStatement(statement): void

• statement {LabeledStatement} with statement
• Returns: {void}

preWalkStatement(statement): void

• statement {ClassDeclaration|MaybeNamedClassDeclaration|FunctionDeclaration|MaybeNamedFunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration} statement
• Returns: {void}

Walking iterates the statements and expressions and processes them

preWalkStatements(statements): void

• statements {ClassDeclaration|FunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration[]} statements
• Returns: {void}

Pre walking iterates the scope for variable declarations

preWalkSwitchCases(switchCases): void

• switchCases {SwitchCase[]} switch statement
• Returns: {void}

preWalkSwitchStatement(statement): void

• statement {SwitchStatement} switch statement
• Returns: {void}

preWalkTryStatement(statement): void

• statement {TryStatement} try statement
• Returns: {void}

preWalkVariableDeclaration(statement): void

• statement {VariableDeclaration} variable declaration
• Returns: {void}

preWalkVariableDeclarator(declarator): void

• declarator {VariableDeclarator} variable declarator
• Returns: {void}

preWalkWhileStatement(statement): void

• statement {WhileStatement} while statement
• Returns: {void}

preWalkWithStatement(statement): void

• statement {WithStatement} with statement
• Returns: {void}

setAsiPosition(pos): void

setVariable(name, variableInfo): void

tagVariable(name, tag, data?, flags?): void

undefineVariable(name): void

unsetAsiPosition(pos): void

walkArrayExpression(expression): void

• expression {ArrayExpression} array expression
• Returns: {void}

walkArrayPattern(pattern): void

• pattern {ArrayPattern} array pattern
• Returns: {void}

walkArrowFunctionExpression(expression): void

• expression {ArrowFunctionExpression} arrow function expression
• Returns: {void}

walkAssignmentExpression(expression): void

• expression {AssignmentExpression} assignment expression
• Returns: {void}

walkAssignmentPattern(pattern): void

• pattern {AssignmentPattern} assignment pattern
• Returns: {void}

walkAwaitExpression(expression): void

• expression {AwaitExpression} await expression
• Returns: {void}

walkBinaryExpression(expression): void

• expression {BinaryExpression} the binary expression
• Returns: {void}

walkBlockStatement(statement): void

• statement {BlockStatement|StaticBlock} block statement
• Returns: {void}

walkCallExpression(expression): void

• expression {CallExpression} expression
• Returns: {void}

walkCatchClause(catchClause): void

• catchClause {CatchClause} catch clause
• Returns: {void}

walkChainExpression(expression): void

• expression {ChainExpression} expression
• Returns: {void}

walkClass(classy): void

• classy {ClassDeclaration|MaybeNamedClassDeclaration|ClassExpression} a class node
• Returns: {void}

walkClassDeclaration(statement): void

• statement {ClassDeclaration|MaybeNamedClassDeclaration} class declaration
• Returns: {void}

walkClassExpression(expression): void

• expression {ClassExpression} the class expression
• Returns: {void}

walkConditionalExpression(expression): void

• expression {ConditionalExpression} conditional expression
• Returns: {void}

walkDoWhileStatement(statement): void

• statement {DoWhileStatement} do while statement
• Returns: {void}

walkExportDefaultDeclaration(statement): void

• statement {ExportDefaultDeclaration} statement
• Returns: {void}

walkExportNamedDeclaration(statement): void

• statement {ExportNamedDeclaration} the statement
• Returns: {void}

walkExpression(expression): void

• expression {ClassExpression|Identifier|SimpleLiteral|RegExpLiteral|BigIntLiteral|ArrayExpression|ArrowFunctionExpression|AssignmentExpression|AwaitExpression|BinaryExpression|SimpleCallExpression|NewExpression|ChainExpression|ConditionalExpression|FunctionExpression|ImportExpression|LogicalExpression|MemberExpression|MetaProperty|ObjectExpression|SequenceExpression|TaggedTemplateExpression|TemplateLiteral|ThisExpression|UnaryExpression|UpdateExpression|YieldExpression|PrivateIdentifier|SpreadElement|Super} expression
• Returns: {void}

walkExpressions(expressions): void

walkExpressionStatement(statement): void

• statement {ExpressionStatement} expression statement
• Returns: {void}

walkForInStatement(statement): void

• statement {ForInStatement} for statement
• Returns: {void}

walkForOfStatement(statement): void

• statement {ForOfStatement} for statement
• Returns: {void}

walkForStatement(statement): void

• statement {ForStatement} for statement
• Returns: {void}

walkFunctionDeclaration(statement): void

• statement {FunctionDeclaration|MaybeNamedFunctionDeclaration} function declaration
• Returns: {void}

walkFunctionExpression(expression): void

• expression {FunctionExpression} arrow function expression
• Returns: {void}

walkIdentifier(expression): void

• expression {Identifier} identifier
• Returns: {void}

walkIfStatement(statement): void

• statement {IfStatement} if statement
• Returns: {void}

walkImportExpression(expression): void

walkLabeledStatement(statement): void

• statement {LabeledStatement} with statement
• Returns: {void}

walkLeftRightExpression(expression): void

• expression {BinaryExpression|LogicalExpression} the expression
• Returns: {void}

walkLogicalExpression(expression): void

• expression {LogicalExpression} the logical expression
• Returns: {void}

walkMemberExpression(expression): void

• expression {MemberExpression} member expression
• Returns: {void}

walkMemberExpressionWithExpressionName(expression, name, rootInfo, members, onUnhandled): void

• expression {MemberExpression} member expression
• name <string> name
• rootInfo <string> root info
• members <string[]> members
• onUnhandled <object> on unhandled callback
• Returns: {void}

walkMetaProperty(metaProperty): void

• metaProperty {MetaProperty} meta property
• Returns: {void}

walkNestedStatement(statement): void

• statement {Statement} the nested statement
• Returns: {void}

Walks a statements that is nested within a parent statement and can potentially be a non-block statement. This enforces the nested statement to never be in ASI position.

walkNewExpression(expression): void

• expression {NewExpression} new expression
• Returns: {void}

walkObjectExpression(expression): void

• expression {ObjectExpression} object expression
• Returns: {void}

walkObjectPattern(pattern): void

• pattern {ObjectPattern} pattern
• Returns: {void}

walkPattern(pattern): void

walkProperty(prop): void

• prop {Property|SpreadElement} property or spread element
• Returns: {void}

walkRestElement(pattern): void

• pattern {RestElement} rest element
• Returns: {void}

walkReturnStatement(statement): void

• statement {ReturnStatement} return statement
• Returns: {void}

walkSequenceExpression(expression): void

• expression {SequenceExpression} the sequence
• Returns: {void}

walkSpreadElement(expression): void

• expression {SpreadElement} spread element
• Returns: {void}

walkStatement(statement): void

• statement {ClassDeclaration|MaybeNamedClassDeclaration|FunctionDeclaration|MaybeNamedFunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration} statement
• Returns: {void}

walkStatements(statements): void

• statements {ClassDeclaration|FunctionDeclaration|ImportDeclaration|ExportNamedDeclaration|ExportDefaultDeclaration|ExportAllDeclaration|ExpressionStatement|BlockStatement|StaticBlock|EmptyStatement|DebuggerStatement|WithStatement|ReturnStatement|LabeledStatement|BreakStatement|ContinueStatement|IfStatement|SwitchStatement|ThrowStatement|TryStatement|WhileStatement|DoWhileStatement|ForStatement|ForInStatement|ForOfStatement|VariableDeclaration[]} statements
• Returns: {void}

Walking iterates the statements and expressions and processes them

walkSwitchCases(switchCases): void

• switchCases {SwitchCase[]} switch statement
• Returns: {void}

walkSwitchStatement(statement): void

• statement {SwitchStatement} switch statement
• Returns: {void}

walkTaggedTemplateExpression(expression): void

• expression {TaggedTemplateExpression} tagged template expression
• Returns: {void}

walkTemplateLiteral(expression): void

• expression {TemplateLiteral} template literal
• Returns: {void}

walkTerminatingStatement(statement): void

• statement {ReturnStatement|ThrowStatement} return or throw statement
• Returns: {void}

walkThisExpression(expression): void

• expression {ThisExpression} this expression
• Returns: {void}

walkThrowStatement(statement): void

• statement {ThrowStatement} return statement
• Returns: {void}

walkTryStatement(statement): void

• statement {TryStatement} try statement
• Returns: {void}

walkUnaryExpression(expression): void

• expression {UnaryExpression} the unary expression
• Returns: {void}

walkUpdateExpression(expression): void

• expression {UpdateExpression} the update expression
• Returns: {void}

walkVariableDeclaration(statement): void

• statement {VariableDeclaration} variable declaration
• Returns: {void}

walkWhileStatement(statement): void

• statement {WhileStatement} while statement
• Returns: {void}

walkWithStatement(statement): void

• statement {WithStatement} with statement
• Returns: {void}

walkYieldExpression(expression): void

• expression {YieldExpression} yield expression
• Returns: {void}