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

javascript language typechecker typescript

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Sheetal Nandi 58a2105dac Also write program files text in logger when incremental verification is in progress		2024-03-25 16:24:26 -07:00
.devcontainer	Add dprint to devcontainer (#55581 )	2023-08-30 17:04:28 -07:00
.github	On cherry-pick, attempt to update baselines on conflict (#57891 )	2024-03-21 14:15:20 -07:00
.vscode	Set NODE_ENV to development and not testing in launch template (#57407 )	2024-02-14 10:50:54 -08:00
bin	Moved LKG folder to lib	2015-07-27 10:07:07 -07:00
scripts	Fix typo in artifact script (#57698 )	2024-03-08 10:57:32 -08:00
src	Also write program files text in logger when incremental verification is in progress	2024-03-25 16:24:26 -07:00
tests	Directories dont check modified time when sending "change" event (#57938 )	2024-03-25 16:19:30 -07:00
.c8rc.json	Run dprint on json (#55602 )	2023-09-01 15:26:01 -07:00
.dprint.jsonc	dprint exclude .git (#57935 )	2024-03-25 13:03:12 -07:00
.editorconfig	Use CRLF, not LF.	2015-03-02 14:38:24 -08:00
.eslint-plugin-local.cjs	Update dependencies to latest compatible versions (#56561 )	2024-01-19 12:44:01 -08:00
.eslintrc.json	Error on unused eslint directives, reenable lost eslint rules (#57350 )	2024-02-27 10:49:41 -08:00
.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	Remove hereby gulp shim warning (#56759 )	2024-01-04 11:08:04 -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	Make tsserver and typingsInstaller thin wrappers around public API (#55326 )	2024-03-15 13:25:26 -07:00
LICENSE.txt	Add snapshot of compiler sources	2014-07-12 17:30:19 -07:00
README.md	Update README.md (#57243 )	2024-01-30 14:24:06 -08:00
SECURITY.md	Update SECURITY.md from 0.0.5 to 0.0.9 (#55651 )	2023-09-06 13:19:32 -07:00
SUPPORT.md	Initial add of Support.md (#55962 )	2023-10-05 10:36:20 -07:00
ThirdPartyNoticeText.txt	Fix ThirdPartyNoticeText.txt encoding (#53184 )	2023-03-09 13:05:02 -08:00
azure-pipelines.release.yml	Fix release pipeline (for real this time) (#57512 )	2024-02-23 12:03:47 -08:00
package-lock.json	Update deps and fix new lints (#57870 )	2024-03-21 09:24:23 -07:00
package.json	Update deps and fix new lints (#57870 )	2024-03-21 09:24:23 -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.