https://github.com/sastan/inflight-barrier

One promise for multiple tasks in flight to avoid async duplication
https://github.com/sastan/inflight-barrier

Last synced: about 1 month ago
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One promise for multiple tasks in flight to avoid async duplication

• Host: GitHub
• URL: https://github.com/sastan/inflight-barrier
• Owner: sastan
• License: mit
• Created: 2020-08-13T21:50:52.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2020-08-13T21:51:26.000Z (over 4 years ago)
• Last Synced: 2024-05-22T22:22:06.835Z (7 months ago)
• Language: TypeScript
• Size: 113 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# inflight-barrier

One promise for multiple requests in flight to avoid async duplication

## Usage

```js

import createInflightBarrier from 'inflight-barrier'

const barrier = createInflightBarrier()

// some request that does some stuff

function req(key) {

  // key can be any value which can be used as a key in a Map

  return barrier(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

- [promise-inflight](https://www.npmjs.com/package/promise-inflight)

- [inflight](https://www.npmjs.com/package/inflight)