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ReScript review

Free#9 of 28 in Code Transpilers

ReScript adds static typing to JavaScript projects and compiles to readable JavaScript.

8.2/10Editor score
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ReScript8.2 Visit ReScript

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

For teams building browser, Node.js, or React applications, ReScript is a strongly typed programming language and compiler that turns ReScript source into readable JavaScript. Its static type checking and type inference are aimed at developers who want type safety in JavaScript projects. Teams can also introduce it gradually alongside existing JavaScript or TypeScript code, rather than replacing an entire codebase at once.

ReScript’s fit depends on the surrounding JavaScript ecosystem. It interoperates with JavaScript and TypeScript, and genType can generate TypeScript types. The toolchain runs locally through npm or other JavaScript package managers and works with existing bundlers, frameworks, test runners, and editors. Integrations include React, Node.js, Vite, and Next.js. JSX support suits React-oriented projects, while VS Code integration includes diagnostics, autocomplete, formatting, and navigation. Incremental builds, watch mode, and dead-code elimination support the development workflow.

ReScript is open source, not a hosted SaaS product, and is self-hosted. The available support channels are documentation and community. It is a reasonable fit for small teams through enterprise teams that want a typed language compiling to JavaScript and are prepared to add a distinct language and local toolchain to their workflow. Teams seeking a hosted compiler service or support beyond community and documentation should consider another option. Its stated founding year is 2015.

ReScript pros and cons

  • Where it wins
    • Compiles ReScript into readable JavaScript with static type checking.
    • Supports JavaScript and TypeScript interop, including genType output.
    • Offers incremental builds, JSX, and VS Code tooling.
  • Where it doesn't
    • Requires teams to adopt ReScript alongside or instead of JavaScript.
    • Local toolchain setup adds work compared with a hosted service.
    • Support is through documentation and community channels.

ReScript fact sheet, pricing and score →

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