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Rob Hogan 398b3b3be4 metro-config: Revert setting hermesParser: true in default Metro config (#47670 )

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/47670

Now that we have `babel-plugin-syntax-hermes-parser` in `react-native/babel-preset` (since D63535216), it's no longer necessary to use `hermes-parser` directly in Metro in order to use newer Flow syntax.

Babel with `babel-plugin-syntax-hermes-parser` is generally preferable, because it intelligently falls back to parsing with Babel for any non-`flow` files.

See https://github.com/facebook/hermes/issues/1549 for context.

Changelog:
[General][Fixed] metro-config: Don't use `hermes-parser` by default, prefer `babel-plugin-syntax-hermes-parser`, which supports other syntax plugins.

Reviewed By: huntie

Differential Revision: D66002056

fbshipit-source-id: cf48acec347e2c0791872f8ca4b53f5f8af1c783

2024-11-19 02:43:03 -08:00

src

metro-config: Revert setting hermesParser: true in default Metro config (#47670 )

2024-11-19 02:43:03 -08:00

.gitignore

Move metro-config package into monorepo build, enable TS generation (#41836 )

2024-02-12 05:20:38 -08:00

package.json

Update Metro to 0.81.0 (#47012 )

2024-10-14 10:08:36 -07:00

README.md

Move react-native-babel-transformer and react-native-babel-preset from Metro to React Native repo (#38228 )

2023-07-27 11:48:16 -07:00

README.md

@react-native/metro-config

Installation

yarn add --dev @react-native/js-polyfills metro-config @react-native/metro-babel-transformer metro-runtime @react-native/metro-config

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:

yarn to install the dependencies. You just need to run this once
yarn jest packages/metro-config.