docs: function checkNodeModules(logOutput, purgeIfStale) {
    var yarnCheck = childProcess.spawnSync(
        'yarn check --integrity', {shell: true, cwd: path.resolve(__dirname, '../..')});
  
    var nodeModulesOK = yarnCheck.status === 0;
    if (nodeModulesOK) {
      if (logOutput) console.log(':-) npm dependencies are looking good!');
    } else {
      if (logOutput) console.error(':-( npm dependencies are stale or in an in unknown state!');
      if (purgeIfStale) {
        if (logOutput) console.log('    purging...');
        _deleteDir(path.join(PROJECT_ROOT, 'node_modules'));
      }
    }
  
    return nodeModulesOK;
  }