How to add `--legacy-peer-deps` flag to npm install when doing a build

[wodin]

The easiest workaround is to use node version 14.

EAS Build fails with unknown error

we updated the default node version from 14 to 16 today, so if you did not specify an explicit node version before then it would be updated in your project. this may be the cause of the issue for you. you can set the node version to “14.18.1” in your build profile to use the previously default version. Configuring EAS Build with eas.json - Expo Documentation