Function getExpoMajorVersion

scripts/check-expo-version.js:14–60

()

const expoConfigPath = path.resolve(projectRoot, 'expo-module.config.json');

function getExpoMajorVersion() {
  let resolvedExpoPackagePath;
  try {
    // Use require.resolve to find expo's package.json from the host project's perspective
    resolvedExpoPackagePath = require.resolve('expo/package.json', {
      paths: [path.resolve(projectRoot, '..', '..')],
    });
  } catch (e) {
    console.log(
      'Expo not found in project node_modules (via require.resolve).',
    );
    return null; // Expo not found or resolvable
  }

  // Check if the resolved path actually exists (belt-and-suspenders)
  if (!fs.existsSync(resolvedExpoPackagePath)) {
    console.log(
      `Expo package.json path resolved to ${resolvedExpoPackagePath}, but file does not exist.`,
    );
    return null;
  }

  try {
    const packageJson = JSON.parse(
      fs.readFileSync(resolvedExpoPackagePath, 'utf8'),
    );
    const version = packageJson.version;
    if (!version) {
      console.log('Expo package.json does not contain a version.');
      return null; // Version not found
    }

    // Extract the first number sequence as the major version
    const match = version.match(/\d+/);
    if (!match) {
      console.log(
        `Could not parse major version from Expo version string: ${version}`,
      );
      return null; // Cannot parse version
    }

    return parseInt(match[0], 10);
  } catch (error) {
    console.error('Error reading or parsing Expo package.json:', error);
    return null; // Error during processing
  }
}

function checkAndCleanExpoConfig() {
  const majorVersion = getExpoMajorVersion();