code: function defFiles() {
    var   files = sh.exec(`git ls-files`, {silent:true}).stdout.split('\n');
  
    files = files.filter(file => file.endsWith('.js'));
    files = files.filter(file => !file.endsWith('.test.js'));
    // files = files.filter(file => file.startsWith('src/'));
  
    // files = files.filter(file => file.indexOf('/lambda') === -1);
    // files = files.filter(file => file.indexOf('src/utils') === -1);
    // files = files.filter(file => file.indexOf('src/app/app.js') === -1);
    // files = files.filter(file => file.indexOf('src/app/host.js') === -1);
  
    // files = files.filter(file => file.indexOf('src/lib/client-start.js') === -1);
    // files = files.filter(file => file.indexOf('src/lib/ingest.js') === -1);
  
    // files = [
    //   'src/lib/client-start.js',
    //   'src/lib/ingest.js',
    //   ...files
    // ];
  
    return files;
  }
docs: ------------------------------------------------------------------------------------- Helper functions