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Update coalesce description

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Angelos Chalaris
2020-03-05 23:06:58 +02:00
parent 1b5b6d5deb
commit a9c58a0b95
1 changed files with 5 additions and 5 deletions
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snippets/coalesce.md
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@ -3,14 +3,14 @@ title: coalesce
tags: utility,beginner
---
Returns the first non-null/undefined argument.
Returns the first defined, non-null argument.
Use `Array.prototype.find()` to return the first non `null`/`undefined` argument.
Use `Array.prototype.find()` and `Array.prototype.includes()` to find the first value that is not equal to `undefined` or `null`.
```js
const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
const coalesce = (...args) => args.find(v => ![undefined, null].includes(v));
```
```js
coalesce(null, undefined, '', NaN, 'Waldo'); // ""
```
coalesce(null, undefined, '', NaN, 'Waldo'); // ''
```