Valentin Shergin 5b19464b81 Fabric: <UnimplementedView>, a new way to react on missing component
Summary:
This implement new <UnimplementedView> (only for iOS for now) that relies on the new "reactive component registration" functionality.
The `UnimplementedView` component is the perfect example of that. It's simple and uniquely required some constraints that we want to implement: the same component class registered several times with different handles and names.

This change serves two needs:
1. Providing an example of how that functionality can be used in more complex cases.
2. That will allow removing some `UnimplementedView`-specific code from the core (and very hot pathes of the system) and make them `noexcept`. That will eventually allow removing some public APIs from RawValue (constructing from folly::dynamic) that currently impose some implementation details and probably prevent us from making it slightly faster. There are only two consumers of this API, this is one of them.

Changelog: [Internal]

Reviewed By: fkgozali

Differential Revision: D17211913

fbshipit-source-id: df1a1ac1a36289ef79904d509d38ee8b3f5588fb
2019-11-06 22:21:31 -08:00
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React Native

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React Native brings React's declarative UI framework to iOS and Android. With React Native, you use native UI controls and have full access to the native platform.

  • Declarative. React makes it painless to create interactive UIs. Declarative views make your code more predictable and easier to debug.
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Contents

📋 Requirements

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