code: function loadFirebaseRc() {
    const rcFilePath = `${process.cwd()}/.firebaserc`;
    if (!fs.existsSync(rcFilePath)) {
      throw new Error('.firebaserc file not found');
    }
    try {
      const fileStr = fs.readFileSync(rcFilePath);
      return JSON.parse(fileStr);
    } catch (err) {
      console.log('Error loading .firebaserc: ', err); // eslint-disable-line no-console
      throw err;
    }
  }
docs: Load .firebaserc file