microsoft / TypeScript

git clone https://github.com/microsoft/TypeScript.git v7.0.2 · 2mo ago 🔥 on GitHub Trending today

TypeScript is a typed superset of JavaScript that compiles to plain, readable JavaScript.

Why you might care

Adds optional static types to JavaScript for large-scale applications, with editor tooling and type checking that catch errors before runtime. Output runs in any browser or JavaScript host. The repo is Microsoft's compiler and language implementation, which is now being ported to Go for faster type checking.

Alternatives

FlowBabelJSDoc with tscSorbet

+14

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+~84

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stars, 30 days · #2,304

112k

★ total · +0% this week

17k

forks · 5.2k open issues

Star history (as recorded here)

2026-10-20 · 111,539 ★ 2026-10-23 · 111,575 ★

LanguageGo

LicenseApache-2.0

Created2014-06-17 (12y ago)

Last pushtoday

Watchers2.2k

OwnerOrganization

Seen on GitHub Trending

2026-10-23 — #3 daily in go · +25 ★

GitHub topics

javascript language typechecker typescript

Links

GitHub: github.com/microsoft/TypeScript
Homepage: https://www.typescriptlang.org
Releases · Issues · Hacker News mentions

README excerpt

# TypeScript
TypeScript is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS. TypeScript compiles to readable, standards-based JavaScript. Try it out at the playground, and stay up to date via our blog and Twitter account.
Find others who are using TypeScript at our community page.
## Installing
For the latest stable version:
 [code] 
For our nightly builds:
 [code] 
## Contribute
There are many ways to contribute to TypeScript.
* Submit bugs and help us verify fixes as they are checked in.
* Review the source code changes.
* Engage with other TypeScript users and developers on StackOverflow.
* Help each other in the TypeScript Community Discord.
* Join the #typescript discussion on Twitter.
* Contribute bug fixes.
This project has adopted the Microsoft Open Source Code of Conduct. For more information see
the Code of Conduct FAQ or contact opencode@microsoft.com
with any additional questions or comments.
## Documentation
* TypeScript in 5 minutes
* Programming handbook
* Homepage
## Roadmap
For details on our planned features and future direction, please refer to our roadmap.

Blurb generated by claude-haiku-5-5 today. Star deltas marked ~ are extrapolated from partial history.