Chevrotain

TLDR

Introduction

Chevrotain is a blazing fast and feature rich Parser Building Toolkit for JavaScript with built-in support for LL(K). Grammars and 3rd party plugin for LL(*) grammars. It can be used to build parsers/compilers/interpreters for various use cases ranging from simple configuration files, to full-fledged programing languages.

Grammars are written as pure JavaScript sources without a code generation phase,

A more in depth review of Chevrotain can be found in this great article on: Parsing in JavaScript: Tools and Libraries.

Installation

npm: npm install chevrotain
Browser ESM bundled versions: These can be downloaded directly via UNPKG or other NPM cdn services, e.g.:
- Latest:
  - https://unpkg.com/chevrotain/lib/chevrotain.mjs
  - https://unpkg.com/chevrotain/lib/chevrotain.min.mjs
- Explicit version number:
  - https://unpkg.com/chevrotain@11.0.3/lib/chevrotain.mjs
  - https://unpkg.com/chevrotain@11.0.3/lib/chevrotain.min.mjs

Documentation & Resources

Sample Grammars.
FAQ.
Other Examples.
HTML API docs.
- The Parsing DSL Docs.
ALL(*) Lookahead in Langium

Compatibility

Chevrotain will run on any modern JavaScript ES2015 runtime. That includes nodejs maintenance/active/current version, modern major browsers, but not legacy ES5.1 runtimes such as IE11.

Contributions

Contributions are greatly appreciated. See CONTRIBUTING.md for details.

Where used

A small-curated list:

HyperFormula
- HyperFormula is an open source, spreadsheet-like calculation engine
- source
Langium
- Langium is a language engineering tool with built-in support for the Language Server Protocol.
Prettier-Java
- A Prettier Plugin for Java
- source
JHipster Domain Language
- The JDL is a JHipster-specific domain language where you can describe all your applications, deployments, entities and their relationships in a single file (or more than one) with a user-friendly syntax.
- source
Argdown
- Argdown is a simple syntax for analyzing complex argumentation.
- source