React Native: Check if any of your packages are not Gradle 8 compliant (no android.namespace)

check-namespaces.js

const fs = require('fs');

const packages = fs.readdirSync('node_modules');

for (const pkg of packages) {
  const pkgPath = `node_modules/${pkg}`;
  const hasAndroidDirectory = fs.existsSync(`${pkgPath}/android`);

  let packageName = pkg;
  let gradlePath = hasAndroidDirectory ? `${pkgPath}/android/build.gradle` : null;
  if (!hasAndroidDirectory) {
    if (!pkg.startsWith('@')) {
      // we don't want any rando folder, this is just an edge case check for packages that start with an @
      continue;
    }

    try {
      const subPackages = fs.readdirSync(pkgPath);
      for (const subPkg of subPackages) {
        const subPkgPath = `${pkgPath}/${subPkg}`;
        const hasAndroidDirectory = fs.existsSync(`${subPkgPath}/android`);

        if (!hasAndroidDirectory) continue;

        gradlePath = `${subPkgPath}/android/build.gradle`;
        packageName = `${pkg}/${subPkg}`;
      }
    } catch (e) {
      continue;
    }
  }

  if (!gradlePath || !fs.existsSync(gradlePath)) continue;

  const buildGradle = fs.readFileSync(gradlePath, 'utf8');
  if (!buildGradle.includes('namespace')) {
    console.log(`NO namespace on ${packageName}`);
  }
}