Generators instead of Observer?

[franciscop]

Hi Sam, I love this library and use it in some of my projects like happy and the experimental create-static-web. I am wondering if adding support for Generators has been considered? See this article intro, the user code could look like this:

const delay = time => new Promise(done => setTimeout(done, time));

const tasks = new Listr([
  {
    title: 'Success',
    task: async function* (){
      yield 'Foo';
      await delay(2000);
      yield 'Bar';
      await delay(2000);
    }
]);

Advantages:

• No 3rd party library needed anymore
• Simple and clean syntax
• Async/await based

Disadvantages:

• Some advanced flows might be more tricky than this simplified example

This example would behave the same as the one in the homepage:

const {Observable} = require('rxjs');

const tasks = new Listr([
  {
    title: 'Success',
    task: () => {
      return new Observable(observer => {
        observer.next('Foo');

        setTimeout(() => {
          observer.next('Bar');
        }, 2000);

        setTimeout(() => {
          observer.complete();
        }, 4000);
      });
    }
  }
]);