Function doBuildExtension

build-system/tasks/extension-helpers.js:360–365

* Builds a single extension after extracting its settings. * @param {!Object} extensions * @param {string} extension * @param {!Object} options * @return {!Promise }

(extensions, extension, options)

 * @return {!Promise<void>}
 */
async function doBuildExtension(extensions, extension, options) {
  const e = extensions[extension];
  let o = {...options};
  o = Object.assign(o, e);
  await buildExtension(e.name, e.version, e.hasCss, o);
}

/**
 * Watches for non-JS changes within an extensions directory to trigger