ast packages

An AST-based pattern checker for JavaScript.

Determine whether an AST node is a reference

AST utils for webassemblyjs

An Esprima-compatible JavaScript parser built on Acorn

WebAssembly binary format parser

A query library for ECMAScript AST using a CSS selector like query language.

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

WebAssembly text format printer

A modern CSS parser and stringifier with TypeScript support

Annotate AST trees with source code positions