On: Announcing TypeScript 2.1

[icholy]

The new type system features are: keyof, lookup types, and mapped types. Does flow have even one of these?

[seattle_spring → icholy]

$Keys<> for keyof, $MapObj<> for mapped types. They are sorely missing lookup types though.

[jauco → seattle_spring]

Googling for mapobj doesn't give me any results. Can you point to some documentation on these?

[curveship → seattle_spring]

I can't seem to find any info online about $MapObj<>? I searched the docs, google ... nuthin'. Am I just missing something?

[seattle_spring → curveship]

Apologies, it's $ObjMap. And it's unfortunately not in the documentation, which could admittedly be improved.