fix autocomplete fallback

[elie-g]

Fixes #121

[lumio]

Haha, I'm 2h too late with my PR

Just checked your code. It did not work with the following setup

const prompts = require( 'prompts' );

( async () => {
  const response = await prompts( {
    type: 'autocomplete',
    message: 'foo',
    name: 'auto',
    initial: 'val1',
    // fallback: () => 'val2',
    choices: [
      { title: 'Option 1', value: 'val1' },
      { title: 'Option 2', value: 'val2' },
    ],
  });
  console.log( response );
} )();

The values are also not selectable anylonger.

Tested it by linking the prompts with yarn link and using it in a test project with yarn link prompts.

[terkelg]

Awesome, thank you guys! This is a luxury problem. It sounds like #138 is a bit more robust right? On the other hand, it's a bit more code.

[lumio]

@DrunkenPoney if you want, you could take parts of my PR to make yours work again.
With my changes at #138 I added string support for the initial value of autocomplete. Not sure if we really want that though.

In any case: @terkelg you decide 😄

[elie-g]

@terkelg #138 is probably better. I did this at 2 AM and I was tired.