Negative array index support `array[-1]` using ES2015 Proxy
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Failed to load latest commit information.
.editorconfig
.gitattributes
.gitignore
.npmrc
.travis.yml
index.js
license
package.json
readme.md
test.js

readme.md

negative-array Build Status

Negative array index support array[-1] using ES2015 Proxy

JavaScript doesn't natively support the use of a negative index to get items backwards from the end, but with ES2015 Proxy it's possible. Take a look at the source to see how simple it is to implement and read this short article about it.

Install

$ npm install negative-array

Usage

const negativeArray = require('negative-array');

// Adds negative array index support to any given array
const unicorn = negativeArray(['pony', 'cake', 'rainbow']);

// Get the last item by using a negative index
console.log(unicorn[-1]);
//=> 'rainbow'

// OMG, YES!

Related

  • on-change - Watch an object or array for changes (Uses Proxy too)
  • known - Allow only access to known object properties (Uses Proxy too)

License

MIT © Sindre Sorhus