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Alex Rudenko
af11b7ca25
DISABLE_THIRD_PARTY_CHECK=updating deps Bug: none Change-Id: I12b06b26f0bb0b938666c7748198187259fcd9fc Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5268589 Commit-Queue: Alex Rudenko <alexrudenko@chromium.org> Reviewed-by: Simon Zünd <szuend@chromium.org> Reviewed-by: Andres Olivares <andoli@chromium.org>
universalify
Make a callback- or promise-based function support both promises and callbacks.
Uses the native promise implementation.
Installation
npm install universalify
API
universalify.fromCallback(fn)
Takes a callback-based function to universalify, and returns the universalified function.
Function must take a callback as the last parameter that will be called with the signature (error, result). universalify does not support calling the callback with three or more arguments, and does not ensure that the callback is only called once.
function callbackFn (n, cb) {
setTimeout(() => cb(null, n), 15)
}
const fn = universalify.fromCallback(callbackFn)
// Works with Promises:
fn('Hello World!')
.then(result => console.log(result)) // -> Hello World!
.catch(error => console.error(error))
// Works with Callbacks:
fn('Hi!', (error, result) => {
if (error) return console.error(error)
console.log(result)
// -> Hi!
})
universalify.fromPromise(fn)
Takes a promise-based function to universalify, and returns the universalified function.
Function must return a valid JS promise. universalify does not ensure that a valid promise is returned.
function promiseFn (n) {
return new Promise(resolve => {
setTimeout(() => resolve(n), 15)
})
}
const fn = universalify.fromPromise(promiseFn)
// Works with Promises:
fn('Hello World!')
.then(result => console.log(result)) // -> Hello World!
.catch(error => console.error(error))
// Works with Callbacks:
fn('Hi!', (error, result) => {
if (error) return console.error(error)
console.log(result)
// -> Hi!
})
License
MIT