addWorkspaces.js

  addWorkspaces:(stageName) => {
    const stagePath = path.join(rootDir, stageName);
    const packagesPath = path.join(rootDir, 'packages');
    const packageJson = path.join(stagePath, 'package.json');
    
    if (fs.existsSync(packageJson)) {
      const dirs = fs.readdirSync(packagesPath, { withFileTypes:true })
      .filter(dirent=>dirent.isDirectory()).map(dir=>dir.name);
      let workspaces = [];
      let packages = [];
      for (const packageName of dirs) {
        packages.push(packageName);
        workspaces.push(path.join(packagesPath, packageName));
      }

      const packageJsonData = JSON.parse(fs.readFileSync(packageJson));

      const newPackageJsonData = ["dependencies", "devDependencies"].reduce((acc, depType) => {
        if (acc[depType]) {
          acc[depType] = Object.keys(acc[depType]).reduce((depsAcc, dep) => {
            if (packages.includes(dep)) {
              delete depsAcc[dep];
            }
            return depsAcc;
          }, acc[depType]);
        }
        return acc;
      }, packageJsonData);

      newPackageJsonData.workspaces = workspaces;
      newPackageJsonData.private = true;

      return fs.writeFileSync(packageJson, JSON.stringify(newPackageJsonData, null, '  '));
    }
  },