Microsoft/TypeScript

9 years ago

admin

2 minutes

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.

Contribute

There are many ways to contribute to TypeScript.

Documentation

Quick tutorial
Programming handbook
Language specification
Homepage

Building

In order to build the TypeScript compiler, ensure that you have Git and Node.js installed. Note that you need to have autocrlf off as we track whitespace changes (git config --global core.autocrlf false).

Clone a copy of the repo:

git clone https://github.com/Microsoft/TypeScript.git

Change to the TypeScript directory:

cd TypeScript

Install Jake tools and dev dependencies:

npm install -g jake
npm install

Use one of the following to build and test:

jake local            # Build the compiler into built/local 
jake clean            # Delete the built compiler 
jake LKG              # Replace the last known good with the built one.
                      # Bootstrapping step to be executed when the built compiler reaches a stable state.
jake tests            # Build the test infrastructure using the built compiler. 
jake runtests         # Run tests using the built compiler and test infrastructure. 
                      # You can override the host or specify a test for this command. 
                      # Use host= or tests=. 
jake runtests-browser # Runs the tests using the built run.js file. Syntax is jake runtests. Optional
                        parameters 'host=', 'tests=[regex], reporter=[list|spec|json|]'.
jake baseline-accept  # This replaces the baseline test results with the results obtained from jake runtests. 
jake -T               # List the above commands.

Usage

node built/local/tsc.js hello.ts

Roadmap

For details on our planned features and future direction please refer to our roadmap.