Function doBuildJs

build-system/tasks/helpers.js:80–94

* @param {!Object} jsBundles * @param {string} name * @param {!Object} extraOptions * @return {!Promise}

(jsBundles, name, extraOptions)

 * @return {!Promise}
 */
function doBuildJs(jsBundles, name, extraOptions) {
  const target = jsBundles[name];
  if (target) {
    return compileJs(
      target.srcDir,
      target.srcFilename,
      extraOptions.minify ? target.minifiedDestDir : target.destDir,
      {...target.options, ...extraOptions}
    );
  } else {
    return Promise.reject(
      [red('Error:'), 'Could not find', cyan(name)].join(' ')
    );
  }
}

/**
 * Generates frames.html