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ReScript

Free#9 of 28 in Code Transpilers

ReScript: ReScript adds static typing to JavaScript projects and compiles to readable JavaScript. Ranked #9 of 28 in Code Transpilers by our editors (8.2/10); pricing: Open source; best for typed JavaScript teams wanting ReScript.

8.2/10Editor score

Visit ReScript

ReScript8.2 Visit ReScript

At a glance

Editor score
8.2 / 10
Pricing
Open source
Best for
Typed JavaScript teams wanting ReScript
Paid from
Free
Conversion mode
Source-to-source
Founded
2015
Facts checked
22 Sep 2026

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.

Our verdict on ReScript

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.

Your product? Our editors can test ReScript in depth and publish a review, labelled as paid · from $149/mo →

ReScript pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on rescript-lang.org

ReScript fact sheet

Free plan	Not verified
Paid from	Free
Source languages	Not verified
Target languages	Not verified
Syntax-version conversion	Not verified
Intermediate output	Not verified
CLI access	Yes
API access	Not verified
Conversion mode	Source-to-source
Deployment	Self-hosted
Support	Community, Docs
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Integrations	6 integrations: JavaScript, TypeScript, React, Node.js, Vite, Next.js
Pricing	Open source
Website	rescript-lang.org
Facts checked	22 Sep 2026

ReScript integrations

ReScript lists 6 integrations on its own site.

JavaScript
TypeScript
React
Node.js
Vite
Next.js

Alternatives to ReScript

See all ReScript alternatives →

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Featured on iTechGuides

ReScript is listed in our Code Transpilers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update