Signature for devices that require more than one IO

[dtex]

Signature for devices that require more than one IO are kind of a mess. Take RGB for example. If you're just passing pin numbers and using the default IO (builtin/pwm) it could be:

const rgb = new RGB([12, 13, 14]);

But if you need usa a specific IO it could be:

const rgb = new RGB({
  pins: [12, 13, 14],
  io: PWM
});

But what if you want to use multiple IO providers? That would have to be:

const rgb = new RGB([
  { pin: 12, io: PWM },
  { pin: 13, io: ExpanderPWM },
  { pin: 14, io: PWM }
]);

or

const rgb = new RGB([
  12,
  { pin: 13, io: ExpanderPWM },
  14
]);

I need to make sure all of these cases are addressed. Any others?

[dtex]

It's either an array or not an array. If it's not an array, we need to normalize it to an array and then call normalizeParams on each member of the array.

[dtex]

Here's another pattern... If there are device params we could have:

const rgb = new RGB({
  pins: [12, 13, 14],
  io: PWM,
  sink: true
});

or worse, device params along with multiple providers:

const rgb = new RGB({
  pins: [12, { pin: 13, io: ExpanderPWM }, 14],
  sink: true
});