on_init.ts

  /// Loading the model.
  public async ngOnInit(): Promise<void> {

    this.title = 'Loading model, please wait...';

    this.model = await tf.loadLayersModel('http://localhost:3000/model.json')
    console.log(this.model.summary());
    
    this.title = 'Model Trained! Write down digits!';
  }