Ian GraysonandFacebook GitHub Bot 35bcf934b1 fix: find-node.sh now respects .nvmrc (#32712)
Summary:
React-native Xcode build steps (such as "Build JS Bundle") rely on `find.node-sh` to find the correct node binary, using nvm if present. We do this because Xcode may run build steps in a fresh shell environment, presumably for repeatable builds.

This PR fixes `find-node.sh`, to respect any `.nvmrc` file that may be present in the build environment.

Today: `find-node.sh` will set the shell environment to the system node version, and ignores any `.nvmrc` the project may provide to pin node for repeatable builds. By ignoring `.nvmrc`, node versions may differ depending on system environment — between developer laptops, or between developer and CI environments. 😞

This problem has been been noticed before in https://github.com/facebook/react-native/issues/8887

### Should this fix happen upstream?

Unfortunately this nvm behavior [is intended](https://github.com/nvm-sh/nvm/issues/2053),  for backwards compatibility

## Changelog

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https://github.com/facebook/react-native/wiki/Changelog
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[iOS] [Fixed] - find-node.sh now respects .nvmrc

Pull Request resolved: https://github.com/facebook/react-native/pull/32712

Test Plan:
Before:
```bash
# nvm isn't loaded
$ which nvm

# we're on default system node
$ which node && node --version
/usr/local/bin/node
v17.0.1

$ echo v16.13.0 > .nvmrc
$ source ./scripts/find-node.sh

# Expected: v16.13.0
$ node --version
v17.0.1
```

After:
```bash
# we're on default system node
$ which node && node --version
/usr/local/bin/node
v17.0.1

$ echo v16.13.0 > .nvmrc
$ source ./scripts/find-node.sh

# Expected: v16.13.0
$ node --version
v16.13.0
```

After (no .nvmrc, should preserve previous behavior):
```bash
# we're on default system node
$ which node && node --version
/usr/local/bin/node
v17.0.1

$ source ./scripts/find-node.sh

$  nvm ls|grep default
default -> v14.17.1

# Expected: v14.17.1
$ node --version
v14.17.1
```

Reviewed By: sota000

Differential Revision: D32889629

Pulled By: ShikaSD

fbshipit-source-id: 527384055e303a87bad43413fb66a7fd117d1a63
2021-12-06 14:03:54 -08:00
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2019-09-19 18:36:25 -07:00
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2021-11-17 22:43:51 -08:00
2016-02-01 10:49:33 -08:00
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