ReScript IntelliJ Plugin

Full-featured ReScript language support for IntelliJ IDEA and other JetBrains IDEs.

This plugin combines a fast, built-in JFlex lexer for syntax highlighting with the official ReScript Language Server (LSP) for semantic features — giving you the best of both worlds.

User Guide

Learn how to install, configure, and use the plugin effectively.

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User Guide
Developer Guide

Understand the architecture, build the project, and contribute.

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Developer Guide

Highlights

  • Syntax highlighting — JFlex lexer with semantic token overlay from LSP

  • Code completion — Intelligent completions via LSP

  • Navigation — Go to Definition, Symbol, Related files

  • Diagnostics — Real-time errors and warnings

  • 60+ features — Run configs, testing, code analysis, and more