We made a reference to the TypeScript wiki in the previous chapter when speaking about the most basic parameters we need to know when executing commands with the TypeScript compiler API.
The code for TypeScript is fully open sourced at GitHub, and the Microsoft team has made a good effort at documenting the different facets of the code in the wiki available on the repository site. We encourage you to go take a look at it any time you have a question or want to delve deeper into any of the language features or form aspects of its syntax.
The wiki is located at: https://github.com/Microsoft/TypeScript/wiki.