What's the difference between typescript.js and typescriptServices.js?

Question

TypeScript comes with 3 JavaScript compiled files in its 'bin' folder:

• tsc.js -- command-line-run compiler itself;
• typescript.js -- ??
• typescriptServices.js -- ??

I guess one of those should be 'TypeScript language service', but what's the other one?

Answer 1

typescript.js is what's used by some random internal tools. There's not any real external-facing purpose for it, though for example you could use it to build something similar to the TypeScript Playground.

tsc.js is typescript.js plus the command-line front-end.

typescriptServices.js is typescript.js plus the language service (e.g. for providing Intellisense features)