Strip flow types

[Kronuz]

Babel has this module: @babel/plugin-transform-flow-strip-types, which simply ignores flow types. There are quite a few modules out there that use babel to compile, yet have flow typing.

Please add support for stripping types, no need for full Flow support (issue #174), just ignore/strip them.

[kdy1]

Closing as flow decided to focus on internal usages.

[FezVrasta]

That doesn't mean external projects can't use it. There are a lot of projects that still use Flow.

[kdy1]

@FezVrasta If you send a PR, I'll happily accept it and maintain it.

[kdy1]

@FezVrasta Maybe it's unrelated question, can you show me some projects using flow?
I've been working on swc for few years and I didn't have time to look at the source code of other js/ts projects.

[FezVrasta]

I maintain Popper, which is used by approximately a couple million websites around the world, and it's entirely wrote with Flow.

https://popper.js.org

[FezVrasta]

@FezVrasta If you send a PR, I'll happily accept it and maintain it.

The best way to implement it would be to use flow-remove-types since it's a standalone binary (no Babel involved) and it's maintained by the Flow core team.

This is an example of how to use it programmatically with JavaScript:

https://github.com/leebyron/rollup-plugin-flow/blob/master/index.js

I'd be happy to send a PR, I just need to understand if integrating flow-remove-types would be an acceptable approach, and some guidance on where to start.

[kdy1]

Hmm... I don't think using js module is acceptable.
I'll just try implementing it in rust when I have some free time. (Hopefully tomorrow, as it's holiday)

[FezVrasta]

Thanks that'd be awesome! The whole Flow community will be grateful for this 🤗