https://github.com/lensh/mini-promise

Mini version promise based on promise a + specification supports asynchronous chain call.
https://github.com/lensh/mini-promise

promise

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Mini version promise based on promise a + specification supports asynchronous chain call.

• Host: GitHub
• URL: https://github.com/lensh/mini-promise
• Owner: lensh
• Created: 2019-12-11T17:35:56.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2019-12-11T17:38:16.000Z (about 5 years ago)
• Last Synced: 2024-11-09T05:38:53.150Z (about 2 months ago)
• Topics: promise
• Language: JavaScript
• Size: 2.93 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## MyPromise

Mini version promise based on promise a + specification supports asynchronous chain call.

## Support

* new MyPromise

* MyPromise.prototype.then  

* MyPromise.prototype.catch

* MyPromise.all  

* MyPromise.race

* MyPromise.resolve

* MyPromise.reject

## Usage

```js

import 'colors'

import { MyPromise } from '../lib/MyPromise'

const log = console.log

// test asynchronous chain call promsie

let p = new MyPromise((res, rej) => {

	setTimeout(() => {

		res(1)

	}, 600)

}).then(ret1 => {

	log('then1:'.green, ret1)

	return MyPromise.resolve(2)

}).then().then(ret2 => {

	log('then2:'.magenta, ret2)

})

// generate a promise array

let arr = [1, 2, 3, 4, 5].map((t, i) => {

	return new MyPromise((res, rej) => {

		setTimeout(() => {

			res(t)

		}, i * 1000)

	})

})

// test promise.all

MyPromise.all(arr).then(ret => {

	log('promise.all'.rainbow, ret)

})

// test promise.race

MyPromise.race(arr).then(ret => {

	log('promise.race'.yellow, ret)

})

// test promise.resolve

let p1 = MyPromise.resolve(2)

p1.then(ret => {

	log('promsie.resolve'.cyan, ret)

})

// test promise.reject

let p2 = MyPromise.reject(3)

p2.catch(e => {

	log('promsie.reject'.red, e)

})

```