https://github.com/skokov3812/promises-chain

The execution of the promises chain
https://github.com/skokov3812/promises-chain

chain javascript promise

Last synced: 15 days ago
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The execution of the promises chain

• Host: GitHub
• URL: https://github.com/skokov3812/promises-chain
• Owner: skokov3812
• Created: 2019-10-15T08:34:44.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2019-10-16T02:59:10.000Z (about 5 years ago)
• Last Synced: 2024-12-03T08:12:09.651Z (about 1 month ago)
• Topics: chain, javascript, promise
• Language: JavaScript
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# promises-chain

The execution of the promises chain

Promise.chain is actually a promise that takes an array of anonymous function with promises as an input (an iterable).

Return an array of promises results

### Install

```

npm i promises-chain

```

```js

let Promise1 = () => new Promise((resolve, reject) => {

  setTimeout(() => {

    resolve()

  }, 1000);

})

...

Promise.resolve(Promise1)

  .then(Promise2)

  .then(Promise3)

  .then(Promise4)

  

Promise.chain([Promise1, Promise2, Promise3, Promise4])

```

## Example:

```js

const promisesChain = require('promises-chain');

Promise.chain([1,2,3,4,5].map(i => function(){

  return new Promise((resolve, reject) => {

    setTimeout(() => {

      console.log(i);

      resolve(i*10)

    }, 1000)

  })

}))

.then(result => {

  console.log('finish', result); // finish [ 10, 20, 30, 40, 50 ]

})

.catch(err => {

  console.log('error', err)

})

```