Method load

src/cdk/private/style-loader.ts:46–68

* Loads a set of styles. * @param loader Component which will be instantiated to load the styles.

(loader: Type<unknown>)

   * @param loader Component which will be instantiated to load the styles.
   */
  load(loader: Type<unknown>): void {
    // Resolve the app ref lazily to avoid circular dependency errors if this is called too early.
    const appRef = (this._appRef = this._appRef || this._injector.get(ApplicationRef));
    let data = appsWithLoaders.get(appRef);

    // If we haven't loaded for this app before, we have to initialize it.
    if (!data) {
      data = {loaders: new Set(), refs: []};
      appsWithLoaders.set(appRef, data);

      // When the app is destroyed, we need to clean up all the related loaders.
      appRef.onDestroy(() => {
        appsWithLoaders.get(appRef)?.refs.forEach(ref => ref.destroy());
        appsWithLoaders.delete(appRef);
      });
    }

    // If the loader hasn't been loaded before, we need to instatiate it.
    if (!data.loaders.has(loader)) {
      data.loaders.add(loader);
      data.refs.push(createComponent(loader, {environmentInjector: this._environmentInjector}));
    }
  }
}