Summary:
Currently, Codegen bash wrapper (`generate-specs.sh`) for Xcode invokes JS-based Codegen tooling via `yarn --silent node <...>`. This breaks both:
- when Yarn is not installed (if NPM is used), for obvious reasons
- when Yarn v2 ("Berry") is active
This PR changes the way `generate-specs.sh` locates `node` executable to the following algorithm:
- use the path provided in the `NODE_BINARY` env var
- if `NODE_BINARY` env var is not defined, find `node` with `command -v node`
## Changelog
[iOS] [Fixed] - Fix Codegen silently failing when Yarn is not installed, or when Yarn v2 is active.
Pull Request resolved: https://github.com/facebook/react-native/pull/30781
Test Plan:
### Case 1 (no Yarn installed)
1. Ensure `yarn` is not present in PATH
2. Run Xcode build
3. Check that Codegen artifacts are produced
### Case 2 (Yarn v2 is used)
1. Ensure `yarn` is running in the v2 ("Berry") mode
2. Run Xcode build
3. Check that Codegen artifacts are produced
Reviewed By: fkgozali
Differential Revision: D26187081
Pulled By: hramos
fbshipit-source-id: 77d3089f523b8c976d8223b77ff9553cb6cf68a5
07e4953514