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coalesce snippet

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xaveyaguarez
2017-12-17 00:08:55 -08:00
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### Coalesce a set of arguments
Use `find()` to return the first non excluded argument.
```js
const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_))
// coalesce(null,undefined,"",NaN, "Waldo") -> ""
const coalesceFactory = (excludes = [null, undefined]) => (...args) => args.find(_ => !excludes.includes(_))
// coalesceFactory([null, undefined, "", NaN])(undefined, null, NaN, "", "Waldo") -> "Waldo"
```