Crate oxc_ast

Oxc AST (Abstract Syntax Tree) Nodes

Supports JavaScript, TypeScript and JSX.

Types

AST types are similar to estree and typescript-eslint’s definition, with a few notable exceptions:

• Identifier is replaced with explicit BindingIdentifier, IdentifierReference, IdentifierName, per ECMAScript Specification.
• AssignmentExpression.left Pattern is replaced with AssignmentTarget.
• Literal is replaced with BooleanLiteral, NumericLiteral, StringLiteral etc.

Field order of types follows “Evaluation order” defined by ECMAScript spec. For TypeScript types, we follow how field order is defined in tsc.

Oxc’s visitors (Visit, VisitMut, Traverse) visit AST node fields in same order as they are defined in the types here.

Parsing

You can obtain an AST by parsing source code with a Parser from oxc_parser.

Cargo Features

• "serialize" enables support for serialization to ESTree JSON

Modules

ast

AST Definitions

ast_builder

AST node factories

ast_kind

precedence

Expression precedence trait implementations.

Macros

match_assignment_target

Macro for matching AssignmentTarget’s variants. Includes SimpleAssignmentTarget’s and AssignmentTargetPattern’s variants.

match_assignment_target_pattern

Macro for matching AssignmentTargetPattern’s variants.

match_declaration

Macro for matching Declaration’s variants.

match_expression

Macro for matching Expression’s variants. Includes MemberExpression’s variants.

match_member_expression

Macro for matching MemberExpression’s variants.

match_module_declaration

Macro for matching ModuleDeclaration’s variants.

match_simple_assignment_target

Macro for matching SimpleAssignmentTarget’s variants. Includes MemberExpression’s variants

match_ts_type

Macro for matching TSType’s variants.

match_ts_type_name

Macro for matching TSTypeName’s variants.

Structs

AstBuilder

AST builder for creating AST nodes

Comment

A comment in source code.

CommentsRange

Double-ended iterator over a range of comments, by starting position.

NONE

Type that can be used in any AST builder method call which requires an IntoIn<'a, Anything<'a>>. Pass NONE instead of None::<Anything<'a>>.

Enums

AstKind

Untyped AST Node Kind

AstType

CommentAnnotation

Annotation comment that has special meaning.

CommentKind

Indicates a line or block comment.

CommentPosition

Information about a comment’s position relative to a token.

Functions

comments_range

has_comments_between