Files
react-native/packages/react-native-codegen
Antoine Doubovetzky 56d7a87e84 Fix assertGenericTypeAnnotationHasExactlyOneTypeParameter throwing wrong error (#35134)
Summary:
1. I noticed there was a mistake in the [IncorrectlyParameterizedGenericParserError](https://github.com/facebook/react-native/blob/main/packages/react-native-codegen/src/parsers/errors.js#L159):
```
if (
  genericTypeAnnotation.typeParameters.type ===
    'TypeParameterInstantiation' &&
  genericTypeAnnotation.typeParameters.params.length !== 1
) {
```

Here we should replace ` 'TypeParameterInstantiation'` with ` 'TSTypeParameterInstantiation'` when the language is `TypeScript`.

The result is that we get a ["Couldn't create IncorrectlyParameterizedGenericParserError"](https://github.com/facebook/react-native/blob/main/packages/react-native-codegen/src/parsers/errors.js#L172) error instead of ["Module testModuleName: Generic 'typeAnnotationName' must have exactly one type parameter."](https://github.com/facebook/react-native/blob/main/packages/react-native-codegen/src/parsers/parsers-commons.js#L88).

I added a [test case](https://github.com/facebook/react-native/commit/2f161166c033cc9de67e04cd683554b05c6173f8) to cover this case:
<img width="1008" alt="Capture d’écran 2022-10-30 à 13 55 56" src="https://user-images.githubusercontent.com/17070498/198879598-ab5a6092-8cbf-422a-9993-2f3f92c9d84c.png">

2. Looking closely at where IncorrectlyParameterizedGenericParserError is used, I noticed that the logic was duplicated in [assertGenericTypeAnnotationHasExactlyOneTypeParameter](https://github.com/facebook/react-native/blob/main/packages/react-native-codegen/src/parsers/parsers-commons.js#L65).

I believe that the logic should reside in `assertGenericTypeAnnotationHasExactlyOneTypeParameter` so I split the `IncorrectlyParameterizedGenericParserError` in 2 different errors.

## Changelog

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[Internal] [Changed] - Fix assertGenericTypeAnnotationHasExactlyOneTypeParameter throwing wrong error

Pull Request resolved: https://github.com/facebook/react-native/pull/35134

Test Plan: I tested using Jest and Flow commands.

Reviewed By: rshest

Differential Revision: D40853200

Pulled By: cipolleschi

fbshipit-source-id: 7040e57e0a2f511ba23fd4c54beae2ccff2fa89d
2022-10-31 13:56:27 -07:00
..
2022-02-22 02:23:02 -08:00
2020-09-29 14:39:40 -07:00
2022-10-31 12:31:00 -07:00

react-native-codegen

Version

Installation

yarn add --dev react-native-codegen

Note: We're using yarn to install deps. Feel free to change commands to use npm 3+ and npx if you like

Testing

To run the tests in this package, run the following commands from the react Native root folder:

  1. yarn to install the dependencies. You just need to run this once
  2. yarn jest react-native-codegen.