Method reloadExtension

src/service/extensions-impl.js:255–275

* Reloads the new version of the extension. * @param {string} extensionId * @param {string} version * @param {boolean} latest * @return {!Promise<!ExtensionDef>}

(extensionId, version, latest)

   * @return {!Promise<!ExtensionDef>}
   */
  reloadExtension(extensionId, version, latest) {
    // Ignore inserted script elements to prevent recursion.
    const els = getExtensionScripts(
      this.win,
      extensionId,
      version,
      latest,
      /* includeInserted */ false
    );
    // The previously awaited extension loader must not have finished or
    // failed.
    const holder = this.extensions_[extensionKey(extensionId, version)];
    if (holder) {
      devAssert(!holder.loaded && !holder.error);
      holder.scriptPresent = false;
    }
    els.forEach((el) =>
      el.setAttribute('i-amphtml-loaded-new-version', extensionId)
    );
    return this.preloadExtension(extensionId, version);
  }

  /**
   * @param {!Window} win