https://github.com/modernpoacher/is-promise-like

https://github.com/modernpoacher/is-promise-like

Last synced: 7 days ago
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• Host: GitHub
• URL: https://github.com/modernpoacher/is-promise-like
• Owner: modernpoacher
• Created: 2017-06-26T20:02:55.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2024-02-24T16:54:09.000Z (9 months ago)
• Last Synced: 2024-04-25T16:02:42.499Z (7 months ago)
• Language: JavaScript
• Size: 2.77 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# IsPromiseLike

## Usage

```javascript

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.

### Examples: `isPromise`

Returns `true`:

```javascript

const p = new Promise(() => {})

isPromise(p) // true

```

```javascript

const p = Promise.resolve({})

isPromise(p) // true

```

```javascript

const p = Promise.all([])

isPromise(p) // true

```

Anything else should return `false`.

### Examples: `isPromiseLike`

All of the preceding examples returning `true`. In addition:

```javascript

class S {

  static then () {}

}

isPromiseLike(S) // true

```

```javascript

class S {

  then () {}

}

const s = new S()

isPromiseLike(s) // true

```

```javascript

const o = {}

o.then = () => {}

isPromiseLike(o) // true

```

```javascript

const a = []

a.then = () => {}

isPromiseLike(a) // true

```

And similar constructions for other types. Anything else should return `false`.