The new type system features are: keyof, lookup types, and mapped types. Does flow have even one of these?
$Keys<> for keyof, $MapObj<> for mapped types. They are sorely missing lookup types though.
Googling for mapobj doesn't give me any results. Can you point to some documentation on these?
I can't seem to find any info online about $MapObj<>? I searched the docs, google ... nuthin'. Am I just missing something?
Apologies, it's $ObjMap. And it's unfortunately not in the documentation, which could admittedly be improved.
Typescript seems to get a lot more attention (at least on HN). How does Flow progress? How is the community around it? I'm curious to know more as an external to both projects.