Implement typescript library for Prompty

[rvmeer]

I've seen plans in the communication but cannot find any issue on this.

I would love to contribute building a typescript implementation.

Why:

Because i want to use prompty in my own VS Code extension. I now use a self written templating thing (with EJS templates) but want to use something standard.

[injeniero]

Hi, there is a branch for this: https://github.com/microsoft/prompty/tree/js/runtime/promptyjs

But not sure how complete or its working state.

[sethjuarez]

Heyo - def in the plan. FWIW, it is currently in the extension in "less-than-ideal" state. Goal is to pull the promptyjs package bits out of the extension and publish it as an npm package.