This is a fork of the official TypeScript module

Usage no npm install needed!

<script type="module">
  import corehTypescript from '';


Automattic's internal fork of the TypeScript Compiler

This adds a couple helpful extras to tsc(1), like the ability to output generated code to the standard output, via the --stdout flag.


Scalable JavaScript development with types, classes and modules.


npm install -g typescript


tsc hello.ts


  1. Install Node if you haven't already (
  2. Install Jake, the tool we use to build our compiler ( To do this, run "npm install -g jake".
  3. 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.