Slight (breaking) change to the API

[jamestalmage]

Since this thing is only 9 hours old, I think we're safe doing it.

When used in this fashion:

promiseFn()
  .then(delay(200))

I think it should delay 200ms from the time the first promise resolves.

[sindresorhus]

Why? And not exactly sure how it's different.

[jamestalmage]

See #2.

I think the following should work.

var promise = Promise.resolve('foo').then(delay(200)).then(delay(200));

assert.is(await promise, 'foo'); // after 400 milliseconds. counter starts after promise resolves.

[jamestalmage]

also #3

[sindresorhus]

You're right. This is embarrassing, but I thought .then() accepted a promise directly too... Would have been so nice if it did.

[jamestalmage]

I thought .then() accepted a promise directly too

When I saw your code I said "Awesome, I didn't know you could do that!".. Turns out you can't 😞

Even if it did, in that case promise.then(delay(200)) ends up meaning "wait for for promise or 200ms - whichever is longer", instead of "wait for promise, then wait 200ms". I like what we have now.