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TypeScript vs PureScript: catalog facts
TypeScript	PureScript
Best for: JavaScript developers who want type checking and better editor tooling	Best for: Developers who want Haskell-style typed functional programming for JavaScript targets
Free Free and open source.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Web, Command line	Windows, macOS, Linux, Command line
Catches type errors in the editor before code runs Outputs plain JavaScript that runs anywhere JavaScript does All 4 strengths for TypeScript Catches type errors in the editor before code runs Outputs plain JavaScript that runs anywhere JavaScript does Online playground for trying it without installing anything Type inference works on existing JavaScript code	Expressive type system with row polymorphism and type classes Compiles to readable JavaScript with easy interop All 4 strengths for PureScript Expressive type system with row polymorphism and type classes Compiles to readable JavaScript with easy interop Editor support with instant rebuilds Searchable library documentation on Pursuit
Adds a compile step to JavaScript projects Type definitions for third-party libraries vary in quality	Smaller ecosystem than mainstream JavaScript or TypeScript Functional style has a learning curve for newcomers
Downloadable app, Web application	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for TypeScript typescriptlang.org Catalog checked September 24, 2026	Official website Full listing and sources Sources for PureScript purescript.org Catalog checked October 2, 2026

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