TypeScript is a language for application-scale JavaScript. TypeScript adds optional types, classes, and modules to JavaScript. TypeScript supports 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.
npm install -g typescripttsc hello.tsThere 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.
- Join the #typescript discussion on Twitter.
- Contribute bug fixes.
- Read the language specification (docx, pdf).
- Install node if you haven't already
- Install dependencies (Jake, mocha, Chai and browserify the tool we use to build our compiler. To do this, run
npm install. - To use jake, run one of the following commands:
- jake local - This builds the compiler. The output is in built/local in the public directory
- jake clean - deletes the build compiler
- jake LKG - This replaces the LKG (last known good) version of the compiler with the built one.
- This is a bootstrapping step to be executed whenever the built compiler reaches a stable state.
- jake tests - This builds the test infrastructure, using the built compiler.
- jake runtests - This runs the tests, using the built compiler and built test infrastructure.
- You can also override the host or specify a test for this command. Use host= or tests=.
- jake baseline-accept - This replaces the baseline test results with the results obtained from jake runtests.
- jake -T lists the above commands.
For details on our planned features and future direction please refer to our roadmap.