Summary:
As part of the fix for https://github.com/facebook/react-native/issues/25349 I added `s.static_framework = true` to each podspec in repo (see https://github.com/facebook/react-native/pull/25619#discussion_r306993309 for more context).
This was required to ensure the existing conditional compilation with `#if RCT_DEV` and `__has_include` still worked correctly when `use_frameworks!` is enabled.
However, fkgozali pointed out that it would be ideal if we didn't have this requirement as it could make life difficult for third-party libraries.
This removes the requirement by moving `React-DevSupport.podspec` and `React-RCTWebSocket.podspec` into `React-Core.podspec` as subspecs. This means the symbols are present when `React-Core.podspec` is built dynamically so `s.static_framework = true` isn't required.
This means that any `Podfile` that refers to `React-DevSupport` or `React-RCTWebSocket` will need to be updated to avoid errors.
## Changelog
I don't think this needs a changelog entry since its just a refinement of https://github.com/facebook/react-native/pull/25619.
Pull Request resolved: https://github.com/facebook/react-native/pull/25816
Test Plan:
Check `RNTesterPods` still works both with and without `use_frameworks!`:
1. Go to the `RNTester` directory and run `pod install`.
2. Run the tests in `RNTesterPods.xcworkspace` to see that everything still works fine.
3. Uncomment the `use_frameworks!` line at the top of `RNTester/Podfile` and run `pod install` again.
4. Run the tests again and see that it still works with frameworks enabled.
Reviewed By: hramos
Differential Revision: D16495030
Pulled By: fkgozali
fbshipit-source-id: 2708ac9fd20cd04cb0aea61b2e8ab0d931dfb6d5
Summary:
This is my proposal for fixing `use_frameworks!` compatibility without breaking all `<React/*>` imports I outlined in https://github.com/facebook/react-native/pull/25393#issuecomment-508457700. If accepted, it will fix https://github.com/facebook/react-native/issues/25349.
It builds on the changes I made in https://github.com/facebook/react-native/pull/25496 by ensuring each podspec has a unique value for `header_dir` so that framework imports do not conflict. Every podspec which should be included in the `<React/*>` namespace now includes it's headers from `React-Core.podspec`.
The following pods can still be imported with `<React/*>` and so should not have breaking changes: `React-ART`,`React-DevSupport`, `React-CoreModules`, `React-RCTActionSheet`, `React-RCTAnimation`, `React-RCTBlob`, `React-RCTImage`, `React-RCTLinking`, `React-RCTNetwork`, `React-RCTPushNotification`, `React-RCTSettings`, `React-RCTText`, `React-RCTSettings`, `React-RCTVibration`, `React-RCTWebSocket` .
There are still a few breaking changes which I hope will be acceptable:
- `React-Core.podspec` has been moved to the root of the project. Any `Podfile` that references it will need to update the path.
- ~~`React-turbomodule-core`'s headers now live under `<turbomodule/*>`~~ Replaced by https://github.com/facebook/react-native/pull/25619#issuecomment-511091823.
- ~~`React-turbomodulesamples`'s headers now live under `<turbomodulesamples/*>`~~ Replaced by https://github.com/facebook/react-native/pull/25619#issuecomment-511091823.
- ~~`React-TypeSaferty`'s headers now live under `<TypeSafety/*>`~~ Replaced by https://github.com/facebook/react-native/pull/25619#issuecomment-511040967.
- ~~`React-jscallinvoker`'s headers now live under `<jscallinvoker/*>`~~ Replaced by https://github.com/facebook/react-native/pull/25619#issuecomment-511091823.
- Each podspec now uses `s.static_framework = true`. This means that a minimum of CocoaPods 1.5 ([released in April 2018](http://blog.cocoapods.org/CocoaPods-1.5.0/)) is now required. This is needed so that the ` __has_include` conditions can still work when frameworks are enabled.
Still to do:
- ~~Including `React-turbomodule-core` with `use_frameworks!` enabled causes the C++ import failures we saw in https://github.com/facebook/react-native/issues/25349. I'm sure it will be possible to fix this but I need to dig deeper (perhaps a custom modulemap would be needed).~~ Addressed by 33573511f0.
- I haven't got Fabric working yet. I wonder if it would be acceptable to move Fabric out of the `<React/*>` namespace since it is new? �
## Changelog
[iOS] [Fixed] - Fixed compatibility with CocoaPods frameworks.
Pull Request resolved: https://github.com/facebook/react-native/pull/25619
Test Plan:
### FB
```
buck build catalyst
```
### Sample Project
Everything should work exactly as before, where `use_frameworks!` is not in `Podfile`s. I have a branch on my [sample project](https://github.com/jtreanor/react-native-cocoapods-frameworks) here which has `use_frameworks!` in its `Podfile` to demonstrate this is fixed.
You can see that it works with these steps:
1. `git clone git@github.com:jtreanor/react-native-cocoapods-frameworks.git`
2. `git checkout fix-frameworks-subspecs`
3. `cd ios && pod install`
4. `cd .. && react-native run-ios`
The sample app will build and run successfully. To see that it still works without frameworks, remove `use_frameworks!` from the `Podfile` and do steps 3 and 4 again.
### RNTesterPods
`RNTesterPodsPods` can now work with or without `use_frameworks!`.
1. Go to the `RNTester` directory and run `pod install`.
2. Run the tests in `RNTesterPods.xcworkspace` to see that everything still works fine.
3. Uncomment the `use_frameworks!` line at the top of `RNTester/Podfile` and run `pod install` again.
4. Run the tests again and see that it still works with frameworks enabled.
Reviewed By: PeteTheHeat
Differential Revision: D16465247
Pulled By: PeteTheHeat
fbshipit-source-id: cad837e9cced06d30cc5b372af1c65c7780b9e7a
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/25583
We now use CocoaPods for better maintainability.
Reviewed By: hramos
Differential Revision: D16193719
fbshipit-source-id: 26382f2da4eaba14a71771540b587fdc80b41108
Summary:
This PR adds initial support for Project Catalyst a.k.a. UIKitForMac. This is not yet meant for production, but this is enough for RNTester to successfully compile and mostly work :)
Some APIs are not supported on the Mac -- e.g. telephony, and deprecated APIs are removed on Mac ���-- those had to be ifdef'd out via platform checks.
The biggest limitation right now is that I couldn't get Web Socket code to successfully compile, and so there are a lot of temporary platform checks for that , and the RCTWebSocket.xcodeproj is marked as not supporting UIKitForMac. Again -- temporary, until someone with more knowledge knows how to fix this.
https://github.com/react-native-community/discussions-and-proposals/issues/131
## Changelog
[iOS] [Added] - Fixed compilation for macOS (Project Catalyst) -- not meant for production use yet
Pull Request resolved: https://github.com/facebook/react-native/pull/25427
Test Plan:
- Open RNTester/RNTester.xcodeproj with Xcode 10.2, run it like a normal iOS app -- make sure it compiles and runs correctly (no regression)
- Open the same project with Xcode 11 beta 2 (or higher) on macOS Catalina beta, select "My Mac" as device target, and run -- see that it actually compiles and runs. **Note** there are unfortunately some required steps:
- change build configuration to Release (because packager doesn't work correctly yet)
- change development team to yours if Xcode tells you to
- go to RNTester project → Build phases → Link binary with libraries, and change `platforms` for `libRCTWebSocket.a` to `iOS` (without Mac compatibility). I can't commit that change because it breaks compatibility with earlier Xcode versions
The two extra steps for successful compile will disappear once web socket compilation for Catalyst is fixed
Reviewed By: mmmulani
Differential Revision: D16088263
Pulled By: sammy-SC
fbshipit-source-id: 9c0b932b048e50a8e0f336eaa0612851b1909cae
Summary:
The `Linking.openURL()` method is supposed to resolve to a `true` `Promise` when the URL was properly open. However, in iOS, the `Promise` was resolving to `nil`. So I fixed this issue by making it resolve to `YES` (`true`), just like on Android.
## Changelog
[iOS] [Fixed] - Fix return value of `Linking.openURL()`
Pull Request resolved: https://github.com/facebook/react-native/pull/24955
Differential Revision: D15411994
Pulled By: cpojer
fbshipit-source-id: 90bdd6cfae8d69d7a239a0b4c84d75859e293b32
Summary:
This will create a cross-platform and safe way to programmatically open the app's settings into the iOS /Android Settings app.
Right now it's possible to open the app's settings, but _**only for iOS**_ via `Linking.openURL("app-settings:")`
To do the same for Android, you need to either create NodeModule or install a dependency such as [react-native-open-settings](https://github.com/lunarmayor/react-native-open-settings).
Why this new method is useful: since Android 6, app permissions work similar to iOS. It's granular and it's requested in the app runtime.
https://developer.android.com/guide/topics/permissions/overview#runtime_requests_android_60_and_higher
> If the device is running Android 6.0 (API level 23) or higher, and the app's targetSdkVersion is 23 or higher, the user isn't notified of any app permissions at install time. Your app must ask the user to grant the dangerous permissions at runtime. When your app requests permission, the user sees a system dialog telling the user which permission group your app is trying to access. The dialog includes a Deny and Allow button.
Thus, if the user checks the **"Never ask again box"** and taps **"Deny"**, for some specific permission, the only way to change the permission is going to the Android Setting app.
And that's where this new method becomes useful. It'll allow our apps to programmatically send the the user to settings app.
Also, `openSettings()` doesn't receive a parameter to redirect to specific subsections of the Settings app because there's no public API to do it on iOS ([there's a way to have, via private API, but it causes the app to get rejected.](https://github.com/mauron85/cordova-plugin-background-geolocation/issues/394))
Create `Linking.openSettings()` for iOS and Android;
[General] [add ] - Add openSetting method to Linking module
Pull Request resolved: https://github.com/facebook/react-native/pull/23965
Differential Revision: D14502910
Pulled By: cpojer
fbshipit-source-id: d27d62282b9df499845c78d983d3b6936c36ea39
Summary:
If you try linking to a system URL scheme that isn't http or https such a tel, the linking promise will be rejected. I'm fixing this by relying on the output of `BOOL canOpen = [RCTSharedApplication() canOpenURL:URL];` to resolve the promise, but still falling back on the better error message if the given URL cannot be opened.
Changelog:
[iOS][fixed] - Allow linking to system URL schemes other than http or https
Reviewed By: cpojer
Differential Revision: D14250507
fbshipit-source-id: d74b2bd615eb6e320a39a956424e0ee34d476dab
Summary:
Part of #22609. This brings the warning count down to 0 for the RNTester target, also adds a fancy new icon!
[General] [Fixed] - All RNTester warnings fixed
Pull Request resolved: https://github.com/facebook/react-native/pull/23584
Differential Revision: D14181197
Pulled By: cpojer
fbshipit-source-id: 4377a55cee6a2d87a7926f1c34663b8a070aef88
Summary:
This PR implements the first part of [RFC0004: CocoaPods Support Improvements](353d44f649/proposals/0004-cocoapods-support-improvements.md), splitting the `React.podspec` into separate podspecs to more closely match the structure of Xcode projects.
The new structure aims to have one to one mapping between Xcode projects and podspecs. The only places where we differ from this mapping are:
* `React/React-DevSupport.podspec`: `DevSupport` is a part of `React.xcodeproj`, which corresponds to the `React-Core` pod. However, we can't include it in the `React-Core` pod because `DevSupport` depends on `React-RCTWebSocket`, which depends on `React-Core`. Pods may not have circular dependencies.
* The new pods under `ReactCommon/` don't have a corresponding `xcodeproj` because there are no `xcodproj` files in `ReactCommon/`. Those C++ modules are included in `React.xcodeproj`.
*Next steps (not in scope of this PR):*
- Start submitting the Podspecs to CocoaPods on a deploy (or turn the React Native repo into a spec repo): this is important in order to make the experience nicer for library consumers, so that it's not necessary to specify the local path of each Podspec in `Podfile`, you can just add `pod 'React', <version>`.
- Add `Podfile` to the default project template (I have a PR ready for this, but because of bugs related to subspecs, it's blocked on this PR)
[iOS] [Changed] - Split React.podspec into separate podspecs for each Xcode project
Pull Request resolved: https://github.com/facebook/react-native/pull/23559
Differential Revision: D14179326
Pulled By: cpojer
fbshipit-source-id: 397a9c30b6b5d24f86c790057c71f0d403f56c3d
Summary:
iOS 9 introduced a whitelist for schemes that apps are allowed to open / check against, the current behavior of React Native is to simple return `NO` when a scheme is missing from that whitelist. It would be more helpful to throw an error with a suggested fix for the problem:
```
Unable to open URL: asos://checkout, add asos to LSApplicationQueriesSchemes in Info.plist.
```
[iOS] [Changed] - canOpenURL throws when custom scheme isn't in LSApplicationQueriesSchemes.
Pull Request resolved: https://github.com/facebook/react-native/pull/23535
Differential Revision: D14143005
Pulled By: cpojer
fbshipit-source-id: 4ead5f073690e627b4a4bbe3fa5a6cb5af46b589
Summary:
Fixes#20797
As mentioned in #20797 when running `react-native run-ios Xcode 9.2 will complain about the nullability of pointers in `RCTLinkingManager.h`.
Pull Request resolved: https://github.com/facebook/react-native/pull/20798
Differential Revision: D9988581
Pulled By: hramos
fbshipit-source-id: e3ce7736da97d314a421c2c1ab71577864081642
Summary: This change drops the year from the copyright headers and the LICENSE file.
Reviewed By: yungsters
Differential Revision: D9727774
fbshipit-source-id: df4fc1e4390733fe774b1a160dd41b4a3d83302a
Summary:
@public
A few people have been complaining, including me, that when we compile a react native project, there are a lot of warnings from xcode, suggesting to update the project build settings to the new recommendations.
I took the liberty to actually update the xcode projects, so we can finally have these gone, as well as replace some deprecated methods with the new suggested ones.
[IOS] [MINOR] [Xcode] - updated the Xcode projects with the latest suggestions from Xcode 9.3, and replaced a few deprecated methods of iOS with their new replacements.
Closes https://github.com/facebook/react-native/pull/19574
Reviewed By: shergin
Differential Revision: D8530135
Pulled By: hramos
fbshipit-source-id: b9c9ede0e07760cb2207caa6b468bd5c241848dc
Summary:
A few people have been complaining, including me, that when we compile a react native project, there are a lot of warnings from xcode, suggesting to update the project build settings to the new recommendations.
I took the liberty to actually update the xcode projects, so we can finally have these gone, as well as replace some deprecated methods with the new suggested ones.
I made two react native projects, one with the regular react native and the other one using this branch.
Left is before, right is after:
![screen shot 2018-06-05 at 15 44 34](https://user-images.githubusercontent.com/100233/40979899-6aba12da-68d7-11e8-8630-6c3009b6dc24.png)
[IOS] [MINOR] [Xcode] - updated the Xcode projects with the latest suggestions from Xcode 9.3, and replaced a few deprecated methods of iOS with their new replacements.
Closes https://github.com/facebook/react-native/pull/19574
Differential Revision: D8489006
Pulled By: hramos
fbshipit-source-id: 2922b2e76aca6883c4f5d04e9c511b9fc1029583
Summary: Moving target deployment to iOS 9.0+ from now on, removing customization for iOS 8.
Reviewed By: shergin
Differential Revision: D8053439
fbshipit-source-id: 292c58f15c6e6caf8b28d15c1521812d6ed675c5
Summary:
Includes React Native and its dependencies Fresco, Metro, and Yoga. Excludes samples/examples/docs.
find: ^(?:( *)|( *(?:[\*~#]|::))( )? *)?Copyright (?:\(c\) )?(\d{4})\b.+Facebook[\s\S]+?BSD[\s\S]+?(?:this source tree|the same directory)\.$
replace: $1$2$3Copyright (c) $4-present, Facebook, Inc.\n$2\n$1$2$3This source code is licensed under the MIT license found in the\n$1$2$3LICENSE file in the root directory of this source tree.
Reviewed By: TheSavior, yungsters
Differential Revision: D7007050
fbshipit-source-id: 37dd6bf0ffec0923bfc99c260bb330683f35553e
Summary:
Hi React Native folks! Love your work!
To make contributing easier, this sets the indentation settings of all the Xcode projects to 2 spaces to match their contents.
Closes https://github.com/facebook/react-native/pull/15275
Differential Revision: D5526462
Pulled By: javache
fbshipit-source-id: cbf0a8a87a1dbe31fceed2f0fffc53839cc06e59
Summary:
What existing problem does the pull request solve?
Beginning in iOS9, Apple has deprecated `-application:openURL:sourceApplication:annotations:`
`- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(nullable NSString *)sourceApplication annotation:(id)annotation NS_DEPRECATED_IOS(4_2, 9_0, "Please use application:openURL:options:") __TVOS_PROHIBITED;`
This PR uses the newly recommended method:
`- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)`
while meanwhile, leaving the deprecated one for developers wishing to use the older `-application:openURL:sourceApplication:annotations:` for apps that support versions 8.x or less.
Benefits will include:
- [x] less warnings
- [x] official deprecation should happen when iOS 11 is deployed
- [x] TVOS support
Closes https://github.com/facebook/react-native/pull/13615
Differential Revision: D4987980
Pulled By: javache
fbshipit-source-id: ae07715a55ca627860262a9c8cf7df1e3c5e752b
Summary:
This is enforced for all of our internal iOS code and a common cause of import failures.
cc janicduplessis
Closes https://github.com/facebook/react-native/pull/13124
Differential Revision: D4765016
fbshipit-source-id: 7c8248c98bca0fa6bad24d5a52b666243375e0db
Summary:
Xcode really sucks, per some discussion on e1577df1fd and https://developer.apple.com/library/content/technotes/tn2215/_index.html, if you use the headers phase, and mark headers in your static library as public, they will actually end up in the final package that's built and you can't submit to the app store! This changes our xcode setup to use a copy files phase instead.
I've also changed the header include path to be $(BUILT_PRODUCTS_DIR)/include, which is added to the include path by Xcode by default, so 3rd party libraries should not be impacted by these changes anymore.
Reviewed By: mkonicek
Differential Revision: D4291607
fbshipit-source-id: 969b9ebcbeb8161f85427f8c429e198d9d0fae30
Summary:
To make React Native play nicely with our internal build infrastructure we need to properly namespace all of our header includes.
Where previously you could do `#import "RCTBridge.h"`, you must now write this as `#import <React/RCTBridge.h>`. If your xcode project still has a custom header include path, both variants will likely continue to work, but for new projects, we're defaulting the header include path to `$(BUILT_PRODUCTS_DIR)/usr/local/include`, where the React and CSSLayout targets will copy a subset of headers too. To make Xcode copy headers phase work properly, you may need to add React as an explicit dependency to your app's scheme and disable "parallelize build".
Reviewed By: mmmulani
Differential Revision: D4213120
fbshipit-source-id: 84a32a4b250c27699e6795f43584f13d594a9a82
Summary: Correct header import paths, update podspec so we point at the copy in ReactCommon (and can eventually remove the copy under React)
Reviewed By: astreet
Differential Revision: D4204501
fbshipit-source-id: e979a010092f025b2cdc289e1e5f22fc7b65a8d1
Summary:
We've deprecated these APIs for quite a few releases and we should be able to get rid of them now.
Remove following deprecated modules/components
- AppStateIOS
- ActivityIndicatorIOS
- IntentAndroid
- SliderIOS
- SwitchAndroid
- SwitchIOS
- LinkingIOS
Update following modules to remove callback support
- Clipboard
- NetInfo
cc bestander
Closes https://github.com/facebook/react-native/pull/9891
Reviewed By: bestander
Differential Revision: D3974094
Pulled By: javache
fbshipit-source-id: 9abe32716bd85d0cea9933894f4447d53bdd5ee7
Summary:
* Motivation *
Second PR for Apple TV support.
* Test plan *
Apple TV tests have been added to scripts/objc-test.sh
Closes https://github.com/facebook/react-native/pull/10227
Differential Revision: D3974064
Pulled By: javache
fbshipit-source-id: 36dffb4517efa489e40fa713a30655d1d76ef646
Summary:
Assert that the return value of these methods is sane.
Closes https://github.com/facebook/react-native/issues/8108
Reviewed By: majak
Differential Revision: D3722629
fbshipit-source-id: 2a67daae6dc380721e5dad27acd2ab67f71d0c6c
Summary: Updated networking and geolocation to use the new events system.
Reviewed By: bestander
Differential Revision: D3346129
fbshipit-source-id: 957716e54d7af8c4a6783f684098e92e92f19654
Summary: Updated networking and geolocation to use the new events system.
Reviewed By: javache
Differential Revision: D3339945
fbshipit-source-id: 01d307cf8a0aea3a404c87c6205132c42290abb1
Summary: Updated networking and geolocation to use the new events system.
Reviewed By: javache
Differential Revision: D3339945
fbshipit-source-id: f1332fb2aab8560e4783739e223c1f31d583cfcf
Summary:
Modules which call JS methods directly, or use `sendDeviceEventWithName:`, can trigger effects in JS without ever being referenced from the JS code. This breaks some assumptions in my earlier diff about when modules can be lazily loaded.
Pending a better solution, I've put explicit `init` methods in these modules to ensure they are eagerly initialized (the downside to this is that they'll still be initialized even if they are never used).
Reviewed By: javache
Differential Revision: D3258232
fb-gh-sync-id: f925bc2e5339c1fbfcc244d4613062c5ab848fc2
fbshipit-source-id: f925bc2e5339c1fbfcc244d4613062c5ab848fc2
Summary:Follow-up to https://github.com/facebook/react-native/pull/5084
This…
- changes all requires within RN to `require('fbjs/lib/…')`
- updates `.flowconfig`
- updates `packager/blacklist.js`
- adapts tests
- removes things from `Libraries/vendor/{core,emitter}` that are also in fbjs
- removes knowledge of `fbjs` from the packager
Closes https://github.com/facebook/react-native/pull/5084
Reviewed By: bestander
Differential Revision: D2926835
fb-gh-sync-id: 2095e22b2f38e032599d1f2601722b3560e8b6e9
shipit-source-id: 2095e22b2f38e032599d1f2601722b3560e8b6e9
Summary:
public
In 9baff8f437 (diff-8d9841e5b53fd6c9cf3a7f431827e319R331), I incorrectly assumed that iOS was wrapping promises in an extra Array. What was really happening is that all the callers were doing this. I removed the wrapping in the callers and the special case handling MessageQueue.
Now one can pass whatever object one wants to resolve and it will show properly in the resolve call on the js side. This fixes issue https://github.com/facebook/react-native/issues/5851
Reviewed By: nicklockwood
Differential Revision: D2921565
fb-gh-sync-id: 9f81e2a87f6a48e9197413b843e452db345a7ff9
shipit-source-id: 9f81e2a87f6a48e9197413b843e452db345a7ff9
Summary:
We need to check the existence of RCTLinkingManager (which doesn't exist on Android) because this code is called on require.
Closes https://github.com/facebook/react-native/pull/5680
Reviewed By: svcscm
Differential Revision: D2887260
Pulled By: androidtrunkagent
fb-gh-sync-id: 4a5843ea6a5898d0f2810ad9ddb5b2078054e9f1
Summary:
A promise based API for handling Link for Android and iOS. Refer #4971
The iOS part doesn't handle errors. Will need someone with iOS knowledge to do that.
cc skevy ide brentvatne mkonicek vjeux nicklockwood
Closes https://github.com/facebook/react-native/pull/5336
Reviewed By: svcscm
Differential Revision: D2866664
Pulled By: androidtrunkagent
fb-gh-sync-id: 67e68a827e6b85886bfa84e79b897f079e78b1b5
Summary:
public
Map and Set are a standard JavaScript features, but are only supported in a subset of JSC versions that we target (e.g. iOS 7's JSC doesn't support Set).
The consequence of this is that failing to require('Set') before using it won't error during testing on a modern OS, but will fail on older OS versions. This diff makes the Map and Set polyfills available globally to all RN apps to avoid that problem.
Reviewed By: davidaurelio
Differential Revision: D2833997
fb-gh-sync-id: 713d8b69f6a1bce2472a1b2e6b84f69d75f30289
Summary: public
The `bridge.modules` dictionary provides access to all native modules, but this API requires that every module is initialized in advance so that any module can be accessed.
This diff introduces a better API that will allow modules to be initialized lazily as they are needed, and deprecates `bridge.modules` (modules that use it will still work, but should be rewritten to use `bridge.moduleClasses` or `-[bridge moduleForName/Class:` instead.
The rules are now as follows:
* Any module that overrides `init` or `setBridge:` will be initialized on the main thread when the bridge is created
* Any module that implements `constantsToExport:` will be initialized later when the config is exported (the module itself will be initialized on a background queue, but `constantsToExport:` will still be called on the main thread.
* All other modules will be initialized lazily when a method is first called on them.
These rules may seem slightly arcane, but they have the advantage of not violating any assumptions that may have been made by existing code - any module written under the original assumption that it would be initialized synchronously on the main thread when the bridge is created should still function exactly the same, but modules that avoid overriding `init` or `setBridge:` will now be loaded lazily.
I've rewritten most of the standard modules to take advantage of this new lazy loading, with the following results:
Out of the 65 modules included in UIExplorer:
* 16 are initialized on the main thread when the bridge is created
* A further 8 are initialized when the config is exported to JS
* The remaining 41 will be initialized lazily on-demand
Reviewed By: jspahrsummers
Differential Revision: D2677695
fb-gh-sync-id: 507ae7e9fd6b563e89292c7371767c978e928f33