https://github.com/sospedra/len

Safely access arrays' length property 🍥
https://github.com/sospedra/len

array length micro util

Last synced: 7 days ago
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Safely access arrays' length property 🍥

• Host: GitHub
• URL: https://github.com/sospedra/len
• Owner: sospedra
• License: mit
• Created: 2018-01-17T14:35:23.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2018-01-18T07:48:19.000Z (over 8 years ago)
• Last Synced: 2026-07-13T02:53:36.619Z (7 days ago)
• Topics: array, length, micro, util
• Language: JavaScript
• Homepage:
• Size: 43 KB
• Stars: 5
• Watchers: 0
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
`len` 🍥

========

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Safely access arrays' length property

### Install

```bash

yarn add @sospedra/len

```

*\* vendors/scope are a good idea, let's embrace it!*

### Usage

`len` will return the array target length or `0` 👀

Meaning that **non-array targets always return `0`**.

```js

import len from '@sospedra/len'

len([]) // 0

len([1, 2]) // 2

len(9) // 0

len('string') // 0

len(undefined) // 0

```

### Why?

Most of the errorceptions, bugsnags, sentry, etc. looks like:

> `Cannot read property 'length' of undefined`

And that makes me sad 🤷‍♀️

Also, by returning the length only of arrays **we ensure that it's iterable**.

Meaning that you can safely check for `.map`, `.reduce`, *et altri*

```js

if (len(array)) array.map(myCallback)

```

Wonderful 😍