TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

javascript language typechecker typescript

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Andrew Branch c1cf59a397 Make fetch a var, not a function		2023-08-31 17:19:42 -07:00
.devcontainer	Add dprint to devcontainer (#55581 )	2023-08-30 17:04:28 -07:00
.github	Improve CI baseline check (#55418 )	2023-08-17 12:16:49 -07:00
.vscode	Make formatting settings in settings template apply to all filetypes (#55419 )	2023-08-29 13:14:32 -07:00
bin	Moved LKG folder to lib	2015-07-27 10:07:07 -07:00
scripts	perf: replace String and Array indexOf method calls with includes method call (#55482 )	2023-08-25 11:27:55 -07:00
src	Make fetch a var, not a function	2023-08-31 17:19:42 -07:00
tests	Make fetch a var, not a function	2023-08-31 17:19:42 -07:00
.c8rc.json	Add --coverage option to build scripts for tests (#54499 )	2023-06-02 16:00:47 -04:00
.dprint.jsonc	Enforce CRLF in TS/JS files (#55403 )	2023-08-16 15:27:36 -07:00
.editorconfig	Use CRLF, not LF.	2015-03-02 14:38:24 -08:00
.eslintplugin.js	dprint the codebase (#54820 )	2023-08-16 14:26:38 -07:00
.eslintrc.json	dprint the codebase (#54820 )	2023-08-16 14:26:38 -07:00
.git-blame-ignore-revs	Add dprint commit to git-blame-ignore-revs (#55402 )	2023-08-16 14:32:14 -07:00
.gitattributes	Make GitHub render json as jsonc (#52335 )	2023-01-20 12:08:26 -08:00
.gitignore	Only gitignore lib dir at repo root (#54644 )	2023-06-14 09:53:45 -07:00
.gulp.js	Change build system to hereby	2022-11-07 13:35:48 -08:00
CODE_OF_CONDUCT.md	Added Microsoft code of conduct file	2018-10-05 22:10:20 +01:00
CONTRIBUTING.md	Remove docker and user tests, related infra (#53118 )	2023-03-06 19:59:21 -08:00
Herebyfile.mjs	Remove the dependency of "del" (#55112 )	2023-08-23 16:42:37 -07:00
LICENSE.txt	Add snapshot of compiler sources	2014-07-12 17:30:19 -07:00
README.md	Don't recommend installing typescript package globally in README (#53209 )	2023-03-13 13:07:58 -07:00
SECURITY.md	Create SECURITY.md (#45474 )	2021-08-16 13:54:30 -07:00
ThirdPartyNoticeText.txt	Fix ThirdPartyNoticeText.txt encoding (#53184 )	2023-03-09 13:05:02 -08:00
package-lock.json	Update package-lock.json	2023-08-30 06:19:30 +00:00
package.json	Remove use of fs-extra (#55468 )	2023-08-23 16:42:45 -07:00

README.md

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:

npm install -D typescript

For our nightly builds:

npm install -D typescript@next

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

Roadmap

For details on our planned features and future direction please refer to our roadmap.