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34 lines
782 B
34 lines
782 B
# promise-inflight |
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One promise for multiple requests in flight to avoid async duplication |
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## USAGE |
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```javascript |
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const inflight = require('promise-inflight') |
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// some request that does some stuff |
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function req(key) { |
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// key is any random string. like a url or filename or whatever. |
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return inflight(key, () => { |
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// this is where you'd fetch the url or whatever |
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return Promise.delay(100) |
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}) |
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} |
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// only assigns a single setTimeout |
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// when it dings, all thens get called with the same result. (There's only |
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// one underlying promise.) |
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req('foo').then(…) |
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req('foo').then(…) |
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req('foo').then(…) |
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req('foo').then(…) |
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``` |
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## SEE ALSO |
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* [inflight](https://npmjs.com/package/inflight) - For the callback based function on which this is based. |
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## STILL NEEDS |
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Tests!
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