Summary:
Introduced a helper macro `rn_codegen_cli()` that defines ":write_to_json" and ":rn_codegen" targets differently based on the environment. When run at FB, it uses FB-specific setup. When run in OSS as a standalone repo, we use `yarn install` and `yarn run build` directly, then use `node` to run the output CLI.
This way, the same target can be used in both environments on other Buck targets.
Motivation: we need this to define rn_codegen_modules() to use codegen to produce Java TurboModule specs, that can be built by CircleCI (we build ReactAndroid via Buck as well). That way we can finally removed the checked-in .java spec files.
Changelog: [Internal]
Reviewed By: hramos
Differential Revision: D24442468
fbshipit-source-id: b1e5fce275100cfe3a1b3ae6d61c1c6d4b25651b
Summary:
*This is a follow-up to https://github.com/facebook/react-native/issues/28645, redone using a build script based off of Metro's build script instead of using `flow-remove-types` and `flow-copy-source`.*
This pull request adds a build step to `react-native-codegen` that builds the Flow-annotated JS files so that users of the NPM module `react-native-codegen` do not need to use require hooks to be able to import it.
A new build script, `scripts/build.js` is added that builds every JS file in `src/` into a `lib/` folder, and also copies over the original Flow annotated files to `lib/` with a `.js.flow` extension, so users of `react-native-codegen` can still typecheck against it using Flow. The shell scripts in `src` are also copied over. It is based off of the [build script from Metro](https://github.com/facebook/metro/blob/00867816eb9b2f69c8af9cebb523e9e4d280671a/scripts/build.js)
## Changelog
[General] [Added] - Codegen: Add prepublish script to build Flow files
Pull Request resolved: https://github.com/facebook/react-native/pull/28827
Test Plan:
I am able to make use of the Codegen scripts without needing to use the `flow-node` CLI or the `flow-remove-types/register`
require hook.
Reviewed By: cpojer
Differential Revision: D21412173
Pulled By: hramos
fbshipit-source-id: 26ae67cdd04652ca4700a069a234a25558773cb1
Kevin Gozali
empyrical