Files
react-native/packages/babel-plugin-codegen
Ramanpreet Nara b6a72bac69 Extend babel-plugin-codegen to generate TurboModule JS codegen
Summary:
## New Functionality
- Detect if the JS file represents a NativeModule spec.
  - **Note:** A JS file is a NativeModule spec if it contains a flow `interface` that extends `TurboModule`. This logic is copied over from the OSS Codegen, here: https://github.com/facebook/react-native/blob/7ccb67a49c087e7ee536c2ffb71717e68a79324b/packages/react-native-codegen/src/parsers/flow/index.js#L60-L75
- For all NativeModule specs, generate the spec's schema using the OSS Codegen for Modules, and conditionally inline it into every `TurboModuleRegistry.get(Enforcing)?` call in the spec, like so:

**Before:**
```
/**
 * flow
 */

import type {TurboModule} from 'RCTExport';
export interface Spec extends TurboModule {
  //...
}

export default TurboModuleRegistry.get<Spec>('FooModule');
```

**After:**
```
/**
 * flow
 */

import type {TurboModule} from 'RCTExport';
export interface Spec extends TurboModule {
  //...
}

export default TurboModuleRegistry.get<Spec>('FooModule', __getModuleShape());

function __getModuleShape() {
  if (!(global.RN$EnableTurboModuleJSCodegen === true)) {
    return undefined;
  }

  return {...};
}
```

Changelog: [General][Added] Extend react-native/babel-plugin-codegen to generate TurboModule JS codegen

Reviewed By: TheSavior

Differential Revision: D22803845

fbshipit-source-id: 18c157a1dbfcc575012184de31c38908acd53c36
2020-11-08 14:24:05 -08:00
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