Uncomment types for Record, fix for .equals

[nmn]

The Record type refs work as of Flow version 0.24.2.

The .equals method on _Iterable was causing Set.equals to not accept another Set. This seems to fix it.

[tallixun]

Hi, are you sure that this line is correct? Isn't it supposed to be (I have checked it only with flow 0.26, so maybe it is working with 0.24):

static <T: Object>(spec: T, name?: string): Class<T & Record<T>>;

[nmn]

Yes, you're right about this. I checked the other cases, and so I just uncommented the things I saw. I'll fix this.

[nmn]

Fixed outstanding issues. Added the getIn and setIn methods for Records.
If you have any suggestions for improving the type definitions let me know.

@tallixun would love another review

[philipp-spiess]

Hey @nmn. I would love to see your PR merged. However, there are a few method definitions missing. So far I found:

• Record#updateIn()
• Record#toJS()
• Record#toObject()
• Record#update()
• Record#withMutations()
• Record#delete()
• Record#merge()

I think it would make sense to extend from KeyedCollection, since this is also the way it is implemented: https://github.com/facebook/immutable-js/blob/master/src/Record.js#L18

[lacker]

So #878 refactored the flow types and also added tests for them. Would you mind updating this PR to merge those changes in, and also add a test that catches this? Thanks!

[kozlitinaelja]

Hi there. I am starting handling backlog. I know it is been a while since you've submitted PR, sorry for such delay. The are some conflicts. Could you, please, rebase? 😅