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

javascript language typechecker typescript

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Josh Goldberg 11f27cd8a3 Extract regex to constant in module scope		2023-04-13 12:59:33 -04:00
.devcontainer	Change build system to hereby	2022-11-07 13:35:48 -08:00
.github	Fix package-lock update task (#53336 )	2023-03-20 11:02:26 -07:00
.vscode	Fix build watch task in tasks.json post-LKG removal (#53190 )	2023-03-09 16:35:17 -08:00
bin	Moved LKG folder to lib	2015-07-27 10:07:07 -07:00
scripts	Upgrade "boolean-trivia" lint to new "argument-trivia" lint that uses type info, has quick fixes, etc. (#53002 )	2023-03-23 16:26:39 -07:00
src	Extract regex to constant in module scope	2023-04-13 12:59:33 -04:00
tests	fix(53347): Incorrect generated JS code when private (hashtag) property is used with parenthesis in left assignment (#53434 )	2023-03-28 13:24:36 -04:00
.editorconfig	Use CRLF, not LF.	2015-03-02 14:38:24 -08:00
.eslintplugin.js	Convert scripts/Gulpfile to checked mjs/cjs so they can run without compilation (#50988 )	2022-10-07 09:50:46 -07:00
.eslintrc.json	Upgrade "boolean-trivia" lint to new "argument-trivia" lint that uses type info, has quick fixes, etc. (#53002 )	2023-03-23 16:26:39 -07:00
.git-blame-ignore-revs	Generated module conversion step - .git-ignore-blame-revs	2022-11-07 13:33:07 -08:00
.gitattributes	Make GitHub render json as jsonc (#52335 )	2023-01-20 12:08:26 -08:00
.gitignore	Remove lib folder (LKG) and use node_modules for building (#52226 )	2023-03-07 15:34:47 -08:00
.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	Add custom GHA report for package size (#53241 )	2023-03-14 09:23:51 -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	2023-03-28 06:22:57 +00:00
package.json	Bump TS devDep to ^5.0.2 (#53299 )	2023-03-16 20:46:09 -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.