Missing dependency type declarations

[amilajack]

We cant run flow with any meaningful effect until we have type declarations for our dependencies. Unfortunately, there currently isn't a programatic way of doing this.

Possible solution: Convert Typescript Definitions to Flow

• ts.d-to-flow.d. This doesnt seem to have any users or community approval so it doesnt seem like a good choice, unless it works.
• @sheerun's solution. This probably requires a lot of work and it might not end out working correctly. The facebook team has attempted that but found that it wouldnt work because Flow's typechecking semantics are much stricter than those of Typescript.