tree-sitter-language-pack — WebAssembly

WebAssembly bindings for tree-sitter-language-pack with browser caching support.

Installation

npm install @kreuzberg/tree-sitter-language-pack-wasm

pnpm add @kreuzberg/tree-sitter-language-pack-wasm

yarn add @kreuzberg/tree-sitter-language-pack-wasm

Quick Start

import init, { availableLanguages, hasLanguage, init as initLanguages, download } from "@kreuzberg/tree-sitter-language-pack-wasm";

await init();

// Optional: Pre-download specific languages for offline use
initLanguages(["python", "javascript", "typescript"]);

console.log(availableLanguages());
console.log(hasLanguage("python")); // true

import { process } from '@kreuzberg/tree-sitter-language-pack-wasm';
// Auto-downloads language if not cached in IndexedDB
const result = process(source, { language: 'javascript' });
console.log('Structure:', result.structure);

// Pre-download languages for offline use
download(["python", "javascript"]);

API Reference

Language Discovery

• available_languages() -- list all supported language names
• has_language(name) -- check if a language is available
• language_count() -- total number of supported languages

Parsing

• get_parser(name) / parse_string(source, language) -- parse source code into a syntax tree

Download API

• init(languages) -- pre-download specific languages for offline use
• download(languages) -- download parsers on demand

Intelligence

• process(source, config) -- extract structured analysis (functions, classes, imports, comments, chunks) from source code

For detailed API documentation, see the WebAssembly package.

License

MIT OR Apache-2.0 -- see LICENSE for details.

Part of tree-sitter-language-pack -- A comprehensive collection of tree-sitter language parsers with polyglot bindings.