This reverts commit ba31d29.

This reverts commit dd016f3.

Summary:
The code to display HMR errors on the client was reading the `description` field from Metro payloads. Metro does not include `description` in the body of its error payloads -- only in its `body.errors[]` items. This commit changes RN's HMR code to show `body.message` (set consistently with facebook/metro#124) instead of the non-existent `body.description`.

Open a test RN app, enable HMR, and then introduce a syntax error in an app source file. See that the redbox provides information about the syntax error instead of just saying "TransformError undefined".

- facebook/metro#124

[GENERAL][ENHANCEMENT][HMR] - Fix display of syntax error messages when HMR is enabled
Closes #17619

Differential Revision: D6726516

Pulled By: mjesun

fbshipit-source-id: b1d1008d6f1aa8f88ff8a2aa1374724a305c773b

Summary:
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See #17618

On certain networks, `xip.io` is used, but as the debugger will always using localhost a change upstream has resulted in a CORS issue (see screenshots in #17618). This change ensures that the debugger will always open with whatever configuration.

> This should be merged in as a patch of `0.52.x` as it affects current release, and `0.51.x` didn't have this issue.

Tested locally, could do with the people having the same issue in #17618 testing it out prior to merging.

(If this PR adds or changes functionality, please take some time to update the docs at https://github.com/facebook/react-native-website, and link to your PR here.)

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  CATEGORY
[----------]        TYPE
[ CLI      ]   [-------------]      LOCATION
[ DOCS     ]   [ BREAKING    ]   [-------------]
[ GENERAL  ]   [ BUGFIX      ]   [-{Component}-]
[ INTERNAL ]   [ ENHANCEMENT ]   [ {File}      ]
[ IOS      ]   [ FEATURE     ]   [ {Directory} ]   |-----------|
[ ANDROID  ]   [ MINOR       ]   [ {Framework} ] - | {Message} |
[----------]   [-------------]   [-------------]   |-----------|

[CATEGORY] [TYPE] [LOCATION] - MESSAGE

 EXAMPLES:

 [IOS] [BREAKING] [FlatList] - Change a thing that breaks other things
 [ANDROID] [BUGFIX] [TextInput] - Did a thing to TextInput
 [CLI] [FEATURE] [local-cli/info/info.js] - CLI easier to do things with
 [DOCS] [BUGFIX] [GettingStarted.md] - Accidentally a thing/word
 [GENERAL] [ENHANCEMENT] [Yoga] - Added new yoga thing/position
 [INTERNAL] [FEATURE] [./scripts] - Added thing to script that nobody will see
-->

[CLI] [BUGFIX] [local-cli/server/middleware/getDevToolsMiddleware.js] - Prevents JS Debugger issues with CORS
Closes #17720

Differential Revision: D6828205

Pulled By: hramos

fbshipit-source-id: 7e5d43db9faf7edc9444ba4214aca1a18e25dbd2

Summary:
Use the same header-only distribution of Boost that Android and the automatic ios-install-third-party.sh script uses. Greatly speeds up `pod install`, even when the distribution was already cached.

The dependency tree looks like this:

* React
  * cxxreact subspec
    * **Boost** (versioned, 1.63.0)
    * Folly
      * **Boost** (any version, will resolve to 1.63.0 from above)

Alternative implementation of PR #16756. Fixes issue #16381.

(same as #16756)
* Install react-native via Cocoapods (or move a helloWorld react-native application over to use Cocoapods for dependency management)
* Add CxxBridge instead of BatchedBridge to your Podfile
* run pod install
* run react-native run-ios

[Add boost.podspec speed up download time & reduce size of the package](#16756)

[IOS] [BUGFIX] [third-party-podspecs] - optimize CocoaPods installation (Boost distribution)
Closes #17476

Differential Revision: D6746095

Pulled By: hramos

fbshipit-source-id: 55b2b5a698691f7fca0bf4c31c4376c2b9eb5379

Summary:
[this commit](2e1707d) which was just a small refactor broke refreshControl behavior - if we render FlatList with refreshing=true, the refreshControl won't be visible on initial render.

The problem is, the [previous beginRefreshing method](2e1707d#diff-cfafa8d7e42ab87ab863f917e187a4aeL51) was renamed to `beginRefreshingProgramatically` and the old call was left in one place [here](2e1707d#diff-cfafa8d7e42ab87ab863f917e187a4aeR47).

Now, I am not sure what kind of jumping the mentioned commit was fixing, but since this fix only concerns the initial render, I believe it will not influence the jumping fix.

I have tested this locally in my app, can provide a video if needed.

none

 [IOS] [BUGFIX] [RefreshControl] - Make sure refreshControl shows up on initial render if specified
Closes #17727

Differential Revision: D6827402

Pulled By: shergin

fbshipit-source-id: 25849244e87af54f25d636b6ade7adcf88958980

Summary:
Some of the classes of RCTText are now in the subfolders, this will fix pod integration for texts

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I have integrated React Native into my project with [this guide](https://facebook.github.io/react-native/docs/integration-with-existing-apps.html) and got the error `No component found for view with name RCTText`. Searching in the web did not give any useful information so I started to dig into the code and found out that there is now subfolders and pod taking only root classes. After making this change project started to compile again.

Create empty project with pods integrated add `RCTText` subspec and in `.js` file add  some `<Text>` element

Fixed `RCTText` subspec integration.
Closes #17655

Differential Revision: D6751039

Pulled By: hramos

fbshipit-source-id: f4538d1125af2b45f36e2fa535382e032dbc8f4e

Summary:
This change adds hooks via the `package.json` for a platform plugin to specify hooks for generating platform configurations. This change also adds hooks to allow platform plugins to participate in `link` and `unlink` commands. The goal is to move platform-specific code for platform plugins into their own repositories / node_modules.

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We need to be able to configure the CLI commands for plugin platforms (e.g., react-native-windows) in their own repositories.

(Write your test plan here. If you changed any code, please provide us with clear instructions on how you verified your changes work. Bonus points for screenshots and videos!)

- All jest tests, including new tests, pass.
- `link` and `unlink` commands are successful on iOS and Android.

(If this PR adds or changes functionality, please take some time to update the docs at https://github.com/facebook/react-native-website, and link to your PR here.)

microsoft/react-native-windows#1601

<!--
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  CATEGORY
[----------]        TYPE
[ CLI      ]   [-------------]      LOCATION
[ DOCS     ]   [ BREAKING    ]   [-------------]
[ GENERAL  ]   [ BUGFIX      ]   [-{Component}-]
[ INTERNAL ]   [ ENHANCEMENT ]   [ {File}      ]
[ IOS      ]   [ FEATURE     ]   [ {Directory} ]   |-----------|
[ ANDROID  ]   [ MINOR       ]   [ {Framework} ] - | {Message} |
[----------]   [-------------]   [-------------]   |-----------|

[CATEGORY] [TYPE] [LOCATION] - MESSAGE

 EXAMPLES:

 [IOS] [BREAKING] [FlatList] - Change a thing that breaks other things
 [ANDROID] [BUGFIX] [TextInput] - Did a thing to TextInput
 [CLI] [FEATURE] [local-cli/info/info.js] - CLI easier to do things with
 [DOCS] [BUGFIX] [GettingStarted.md] - Accidentally a thing/word
 [GENERAL] [ENHANCEMENT] [Yoga] - Added new yoga thing/position
 [INTERNAL] [FEATURE] [./scripts] - Added thing to script that nobody will see
-->

[CLI][FEATURE][local-cli/core/index.js] - Allow platform plugins to contribute to the RNConfig.
[CLI][FEATURE][local-cli/link/link.js] - Allow platform plugins to participate in the `link` command.
[CLI][FEATURE][local-cli/link/unlink.js] - Allow platform plugins to participate in the `unlink` command.
Closes #17745

Differential Revision: D6883558

Pulled By: hramos

fbshipit-source-id: ea32fe21cedd4cc02c5c0d48229f2cdb2ac8142b

Summary:
This commit removes special cases for linking iOS and Android platforms.

A previous commit opened up link and other commands for other platforms to provide their own behaviors. It left special cases in tact for iOS and Android. This PR removes the special case.

- Added jest tests related to the link command.
- Ran the `link` and `unlink` commands for iOS and Android and confirmed no changes.

#17745

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  CATEGORY
[----------]        TYPE
[ CLI      ]   [-------------]      LOCATION
[ DOCS     ]   [ BREAKING    ]   [-------------]
[ GENERAL  ]   [ BUGFIX      ]   [-{Component}-]
[ INTERNAL ]   [ ENHANCEMENT ]   [ {File}      ]
[ IOS      ]   [ FEATURE     ]   [ {Directory} ]   |-----------|
[ ANDROID  ]   [ MINOR       ]   [ {Framework} ] - | {Message} |
[----------]   [-------------]   [-------------]   |-----------|

[CATEGORY] [TYPE] [LOCATION] - MESSAGE

 EXAMPLES:

 [IOS] [BREAKING] [FlatList] - Change a thing that breaks other things
 [ANDROID] [BUGFIX] [TextInput] - Did a thing to TextInput
 [CLI] [FEATURE] [local-cli/info/info.js] - CLI easier to do things with
 [DOCS] [BUGFIX] [GettingStarted.md] - Accidentally a thing/word
 [GENERAL] [ENHANCEMENT] [Yoga] - Added new yoga thing/position
 [INTERNAL] [FEATURE] [./scripts] - Added thing to script that nobody will see
-->

[CLI][FEATURE][local-cli/link/link.js] - Removes special cases for linking in iOS and Android.
Closes #17961

Differential Revision: D6975951

Pulled By: hramos

fbshipit-source-id: 8dd5da35619e2124ce4b3b18db8b694757792363