Hi @erictheun,
The engines property in the package.json file in the root of the repository specifies that you need node 14 or 16 to run the repo. We simply have not tested it with node 18 yet.
I suggest to read the root README.md on how to work with the repository. For example you will need to run npm ci in the root and npm run build to build all the artifacts (or at least the react ones with npx lerna run build --scope @bloomreach/example-react --include-dependencies --stream) before you can start the example app.
I hope that helps.
Cheers,
Joeri