Accept function?

[fisker]

const delayed1 = pMinDelay(fn, 1000)
const delayed2 = pMinDelay(fn, 1000, {delayRejection: false})

delayed1() takes at least 1s to settle.
delayed2() takes at least 1s to resolve.

I have similar function in my recent project accepts both Promise and function, I called it slowDown.

[sindresorhus]

It's unclear to me what problem accepting a function would solve and how it would handle the function?

[fisker]

what problem accepting a function would solve

Before:

const foo = async () => {}

const bar = await pMinDelay(foo())

After

const foo = pMinDelay(async () => {}) 

const bar = await foo()

how it would handle the function?

My implemention

async function slowDownPromise(promise, time) {
  const [result] = await Promise.all([promise, delay(time)])
  return result
}

function slowDownFunction(fn, time) {
  return function (...args) {
    return slowDownPromise(fn.apply(this, args), time)
  }
}

function slowDown(promiseOrFunction, time) {
  return (
    typeof promiseOrFunction === 'function' ? slowDownFunction : slowDownPromise
  )(promiseOrFunction, time)
}

[sindresorhus]

Ah. That's a good idea. 👍