Summary:
Flow is broken for a bunch of people and has been for the last few days. For some reason this isn't causing any builds to fail which we will need to look into. For now, this stops the bleeding.
I *think* this is because of case sensitivity differenes between Mac and where all of our CI machines run.
```
Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ Libraries/Core/polyfillPromise.js:21:33
Importing from an untyped module makes it any and is not safe! Did you mean to add // flow to the top of Promise?
(untyped-import)
18│ * If you don't need these polyfills, don't use InitializeCore; just directly
19│ * require the modules you need from InitializeCore for setup.
20│ */
21│ polyfillGlobal('Promise', () => require('Promise'));
22│
```
Pull Request resolved: https://github.com/facebook/react-native/pull/22048
Reviewed By: shergin
Differential Revision: D12918418
Pulled By: TheSavior
fbshipit-source-id: 9d9db1b3686eab906244180325c12ffcce92be8c
Summary: Split up InitializeCore into a bunch of modules. The idea here is to make it easier for apps to just get the initialization logic they want and leave behind what they don't; for example, if you don't want the Map/Set polyfills, instead of requiring InitializeCore you can require the modules you want from it.
Reviewed By: yungsters
Differential Revision: D10842564
fbshipit-source-id: 3b12d54fddea8c4ee75886022338c214987a015c
