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is-promise-like
Advanced tools
import {
isPromise,
isPromiseLike
} from 'is-promise-like'
isPromise
identifies instances of the global Promise
class.
isPromiseLike
identifies instances of the global Promise
class or other objects which are like them.
isPromise
Returns true
:
const p = new Promise(() => {})
isPromise(p) // true
const p = Promise.resolve({})
isPromise(p) // true
const p = Promise.all([])
isPromise(p) // true
Anything else should return false
.
isPromiseLike
All of the preceding examples returning true
. In addition:
class S {
static then () {}
}
isPromiseLike(S) // true
class S {
then () {}
}
const s = new S()
isPromiseLike(s) // true
const o = {}
o.then = () => {}
isPromiseLike(o) // true
const a = []
a.then = () => {}
isPromiseLike(a) // true
And similar constructions for other types. Anything else should return false
.
FAQs
Identifies a Promise or an object with a Promise-like interface
We found that is-promise-like demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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