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Yes. Angular is working on a similar approach. Great results so far.

I read there was a TypeScript Compiler that would output CC copatible type annotation comments.

Tsickle by Angular does that: https://github.com/angular/tsickle

It wraps the TypeScript Compiler and outputs CC compatible type annotation comments.

- It's being built by a handful of people (I remember seeing the original author complain he doesn't really have the time for it)

- It's a hack on top of TypeScript compiler

- It gets broken by TypeScript upgrades and is usually several weeks behind TS version upgrades.

I'd be really wary using it in production

[author here]

- Pretty much everything you use (e.g. Angular or React or Babel or Webpack or equivalents in other languages) is being built by a handful of people

- It interacts with TypeScript in a way that tends to be more sensitive to changes, but being some weeks behind the latest release of a compiler is not the end of the world, and we do continuously upgrade

I agree you should be wary of using it in production though because it's not really user-friendly yet. Though if you can figure it out it does work and some people are successfully shipping some apps.

I sounded curt, but I think tsickle is awesome.

I can't justify bringing it in in our current setup though :(

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