TypeScript definitions

[huy-nguyen]

I'm using fluent and quite like it. However, the project currently has no TypeScript definitions and I can create them if the maintainers so desire.

[Gregoor]

That's great! I've been meaning to add some for a while. We have some basic typings for fluent-react over at the Common Voice repo: https://github.com/mozilla/voice-web/blob/master/web/src/fluent-react.d.ts
Maybe this helps as a starting point.

[huy-nguyen]

I've opened a PR for fluent, fluent-react and fluent-langneg at DefinitelyTyped/DefinitelyTyped#32235 if you wan to take a look. The files ending in -tests are examples of user-facing API to be tested against the type definitions. I didn't make the definitions for other packages because they don't seem to be user-facing.

[JamesNimlos]

I think this issue can be closed now seeing as the referenced definitions have been merged, as well as typedefs for the new versions were merged in DefinitelyTyped/DefinitelyTyped#40179

[stasm]

Yes, thanks!

I've also made good progress in #376 in which I migrated @fluent/bundle to TypeScript. When the PR lands, type definitions will become easy to manage (and will move to this repo). If all goes well, other @fluent/ packages will follow later this year.