This is a
playground to test code. It runs a full
Node.js environment and already has all of
npm’s 400,000 packages pre-installed, including
typescript with all
npm packages installed. Try it out:
This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.
Find others who are using TypeScript at our community page.
For the latest stable version:
npm install -g typescript
For our nightly builds:
npm install -g typescript@next
There are many ways to contribute to TypeScript.
Clone a copy of the repo:
git clone https://github.com/microsoft/TypeScript.git
Change to the TypeScript directory:
Install Gulp tools and dev dependencies:
npm install -g gulp npm install
Use one of the following to build and test:
gulp local # Build the compiler into built/local. gulp clean # Delete the built compiler. gulp LKG # Replace the last known good with the built one. # Bootstrapping step to be executed when the built compiler reaches a stable state. gulp tests # Build the test infrastructure using the built compiler. gulp runtests # Run tests using the built compiler and test infrastructure. # Some low-value tests are skipped when not on a CI machine - you can use the # --skipPercent=0 command to override this behavior and run all tests locally. # You can override the specific suite runner used or specify a test for this command. # Use --tests=<testPath> for a specific test and/or --runner=<runnerName> for a specific suite. # Valid runners include conformance, compiler, fourslash, project, user, and docker # The user and docker runners are extended test suite runners - the user runner # works on disk in the tests/cases/user directory, while the docker runner works in containers. # You'll need to have the docker executable in your system path for the docker runner to work. gulp runtests-parallel # Like runtests, but split across multiple threads. Uses a number of threads equal to the system # core count by default. Use --workers=<number> to adjust this. gulp baseline-accept # This replaces the baseline test results with the results obtained from gulp runtests. gulp lint # Runs eslint on the TypeScript source. gulp help # List the above commands.
node built/local/tsc.js hello.ts
For details on our planned features and future direction please refer to our roadmap.