How to use the @angular/platform-browser-dynamic.bootstrapWorkerApp function in @angular/platform-browser-dynamic

label: "Save the world",
    completed: false
  }];
  name: string = 'John';
  addTodo(label: string) {
    this.todos.push({
      label,
      completed: false
    });
  }
  toggleCompletion(todo: Todo) {
    todo.completed = !todo.completed;
  }
}

bootstrapWorkerApp(TodoApp)
  .catch(err => console.error(err));

import './polyfills';

import { bootstrapWorkerApp } from '@angular/platform-browser-dynamic';
import { App } from './app/app';

bootstrapWorkerApp(App, []);