https://github.com/iarna/promise-inflight

One promise for multiple requests in flight to avoid async duplication
https://github.com/iarna/promise-inflight

Last synced: 12 days ago
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One promise for multiple requests in flight to avoid async duplication

• Host: GitHub
• URL: https://github.com/iarna/promise-inflight
• Owner: iarna
• License: isc
• Created: 2017-02-25T03:31:20.000Z (over 7 years ago)
• Default Branch: latest
• Last Pushed: 2020-08-04T12:25:04.000Z (over 4 years ago)
• Last Synced: 2024-05-09T22:04:37.861Z (6 months ago)
• Language: JavaScript
• Size: 2.93 KB
• Stars: 16
• Watchers: 2
• Forks: 3
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# promise-inflight

One promise for multiple requests in flight to avoid async duplication

## USAGE

```javascript

const inflight = require('promise-inflight')

// some request that does some stuff

function req(key) {

  // key is any random string.  like a url or filename or whatever.

  return inflight(key, () => {

    // this is where you'd fetch the url or whatever

    return Promise.delay(100)

  })

}

// only assigns a single setTimeout

// when it dings, all thens get called with the same result.  (There's only

// one underlying promise.)

req('foo').then(…)

req('foo').then(…)

req('foo').then(…)

req('foo').then(…)

```

## SEE ALSO

* [inflight](https://npmjs.com/package/inflight) - For the callback based function on which this is based.

## STILL NEEDS

Tests!