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27 lines
898 B
27 lines
898 B
# call-me-maybe [](https://github.com/limulus/call-me-maybe/actions/workflows/continuous-release.yaml)
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Let your JS API users either give you a callback or receive a promise.
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## Usage
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```javascript
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var maybe = require("call-me-maybe")
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module.exports = function asyncFunc (cb) {
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return maybe(cb, new Promise(function(resolve, reject) {
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// ...
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}))
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}
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```
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## API
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### maybe(cb, promise)
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If the callback `cb` is truthy, returns `undefined` and will call `cb` when `promise` is settled. The parameters passed to `cb` are standard error-first:
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- If `promise` is fulfilled, then it is called with the result of the promise: `cb(null, result)`
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- If `promise` is rejected, then it is called with the rejection error: `cb(err)`
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If `cb` is falsey, then `promise` is returned.
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