Typesafe emit and on

[vjpr]

Would it be possible to integrate typings for on listener parameters like here: https://github.com/andywer/typed-emitter

And emit keys. I guess this can be done with Symbols.

Probably best done with a wrapper class because the current types of the methods wouldn't be compatible because of wildcard support, etc. (without becoming unreadable at least...I think there are some nifty features in TS these days for complex string typing)

[RangerMauve]

Feel free to submit a PR with changes to the eventemitter2.d.ts file. 😁

[jjeff]

It looked like this got in for 6.4.8 👍, but now it's gone again for 6.4.9 😕.

What happened?

[jjeff]

Oh. Okay... here it is: #292