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.