Method onload

packages/utils/src/asset.ts:150–158

(e: any)

    const i = createDefer();
    function onload(e: any) {
      element.onload = null;
      element.onerror = null;
      if (e.type === 'load') {
        i.resolve();
      } else {
        i.reject();
      }
    }

    element.href = url;
    element.rel = 'stylesheet';