I want to be able to programmatically create a TS file and emit it.

@DanielRosenwasser mentioned last week:

It honestly may be better to do a straight TS emit if what you're looking for is definition file emit, if you're looking to use it as a verification pass for an intermediate language, or if you're looking to take advantage of our downlevel emit functionality.

How do do a straight TS emit?

In the Using the Compiler API it says:

Emitter: Output generated from a set of inputs (.ts and .d.ts) files can be one of: JavaScript (.js), definitions (.d.ts), or source maps (.js.map)

That is cool that you can emit a .d.ts definition. Is there any way to emit a .ts file? Is there anything that can "pretty print" a TS AST?