Mongoose populate

[maxaggedon]

set the correct return type for Mongoose$Document.popluate() (https://github.com/Automattic/mongoose/blob/4545d44c56a1fe62fa21d783b70bb3a8ff1734cd/lib/document.js#L2483)

[villesau]

Hi @maxaggedon! Looks like the libdef is failing on 0.85.0. The reason is that 0.85.0 is much stricter with type annotations, see: https://medium.com/flow-type/asking-for-required-annotations-64d4f9c1edf8

Would you be willing to fix those issues too?

[maxaggedon]

Hi @villesau ! I did the same fixes for v5 ;)

[mi6gan]

Callback-version of Document#populate is not purposed to return anything at all. So, imo, it would be better and cleaner to add a separate definition to callback-less version, like this one:

populate(path: string): this;