docs: function lintScripts(conf, undertaker) {
  
    const jsSrc = path.join(conf.themeConfig.root, conf.themeConfig.js.src, '**', '*.js');
  
    // Lint theme scripts with ESLint. This won't touch any TypeScript files.
    return undertaker.src(jsSrc)
      .pipe(eslint())
      .pipe(eslint.format())
      .pipe(gulpIf(conf.productionMode, eslint.failAfterError()));
  
  }