Better support for functions

[louy]

As a heavy user of Typescript now there's one very annoying thing that I face all the time. It's the bad (or lack of) support for Function.prototype.apply/call/bind.

I don't know if this has been requested previously, but this is a big thing to me and I'd like to ask for a solution. Like it or not, bind is used a lot in javascript. Returning any is not a good solution IMHO. Functions are first-class citizens in Javascript, which is one of the reasons that it's the best language to me, but they're not so much in Typescript.

I don't have a syntax in mind unfortunately, so this is an open discussion. If anyone has any ideas please step in.

Cheers,

[RyanCavanaugh]

Duplicate #212

[sandersn]

Proposals #5453 and #6018 will allow us to type Function.prototype.apply/call/bind. I'm working on #6018 right now because it's useful in quite a few other places.