Class CombineLoader

web/packages/framework/src/loader/index.ts:14–52

* 组合加载器

 * 组合加载器
 */
class CombineLoader implements MicroApplicationLoader {
  private productionLoader: MicroApplicationLoader;
  private developmentLoader: MicroApplicationLoader;
  private settingLoader: SettingLoader;
  constructor(
    pLoader: MicroApplicationLoader,
    dLoader: MicroApplicationLoader,
    sLoader: SettingLoader,
  ) {
    this.productionLoader = pLoader;
    this.developmentLoader = dLoader;
    this.settingLoader = sLoader;
  }

  public async enabled(): Promise<boolean> {
    return Promise.resolve(true);
  }

  public async loadMeta(): Promise<MicroApplication[]> {
    if (await this.productionLoader.enabled()) {
      // 加载微前端资源配置
      const production = await this.productionLoader.loadMeta();
      // 加载微前端设置配置
      await this.settingLoader.loadSetting();
      // 如果启用开发者模式，则加载开发者微前端资源配置
      if (await this.developmentLoader.enabled()) {
        const dev = await this.developmentLoader.loadMeta(production);
        if (!isEmpty(dev)) {
          debug('MicroApplicationDevelopmentLoader meta config mount');
          return dev;
        }
      }
      debug('MicroApplicationAPILoader meta config mount');
      return production;
    }
    message.error('微前端启动失败', 0);
    throw new Error('微前端启动失败');
  }
}

const loader = new CombineLoader(apiLoader, developmentLoader, settingLoader);