Typescript 2.4 is supported. The Mocha test framework and Karma+Mocha are available for testing.

The following typings are available:

How different TypeScript code sections are treated

The solution and optional setup/preloaded code are combined into one "solution" file. The test fixture is its own file, which automatically requires the solution file as solution.


The sandbox environment will timeout the code within 7 seconds.

Node Packages

The following packages have been installed:


Our TypeScript environment supports the following testing frameworks: