simple-js-enum

simple-enum

Simple class for Enum type in JavaScript
You can use it as typical enum or as two-way access map

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• Only 17 lines (15 sloc) | 464 Bytes unzipped 🔥
• Simple for use
• No dependencies

Install

You can install this library from npm or yarn:

npm install simple-js-enum

yarn add simple-js-enum

If you have some questions, problems or suggestions you can create an issue, pull request or connect me

Example

Import

const Enum = require('simple-js-enum');

Creating from Array

const LoadStatus = new Enum(['Loading', 'Loaded', 'Error']);

Access ways:

• Default way:

console.log(LoadStatus.Loading); // 0

• Reverted way:

console.log(LoadStatus[0]); // 'Loading'

Creating from Object

If you want to use numbers different to default you can pass object:

const LoadStatus = new Enum({
  Loading: 10,
  Loaded: 20,
  Error: 30
});
console.log(LoadStatus.Error); // 30
console.log(LoadStatus[30]); // 'Error'

Get keys or values arrays

• Get array with constants names

const LoadStatus = new Enum(['Loading', 'Loaded', 'Error']);
console.log(LoadStatus.values); // ['Loading', 'Loaded', 'Error']

• Get array with number values

const LoadStatus = new Enum(['Loading', 'Loaded', 'Error']);
console.log(LoadStatus.numbers); // [0, 1, 2]

Unfroze enum

Enum is frozen by default. But you can pass { frozen: false } and it'll be unfrozen:

const LoadStatus = new Enum(['Loading', 'Loaded', 'Error'], { frozen: false });
LoadStatus.Something = 111

It is not recommended and can leads to errors. For example You can rewrite existed property etc

Licence

Yevhen Diachenko 2018 | MIT