Method onDestroy

packages/core/src/di/r3_injector.ts:297–301

(callback: () => void)

  }

  override onDestroy(callback: () => void): () => void {
    assertNotDestroyed(this);
    this._onDestroyHooks.push(callback);
    return () => this.removeOnDestroy(callback);
  }

  override runInContext<ReturnT>(fn: () => ReturnT): ReturnT {
    assertNotDestroyed(this);