alpha-order

Sort JS objects and arrays by alpha order

The JavaScript specification makes no guarantees about the order of keys in objects. However, V8 tends to sort them in the order in which they were added to the object. This allows us to to get deterministic results from JSON.stringify by alpha sorting objects and arrays ahead of time. BE WARNED: DO NOT DEPEND ON KEY ORDERING IN YOUR CODE.

Getting Started

Install the module with: npm install alpha-order

Usage

Simply require the module, then call the sort() method. alpha-order does not mutate the object passed in, and it always returns a new object to you.

const alpha = require('alpha-order');
 
const a = [3, 1, 2];
alpha.sort(a);
// => [1, 2, 3]
 
const obj = { b: 1, a: 1 };
alpha.sort(obj);
// => { a: 1, b: 2 }
 
// You can also sort nested objects
const obj2 = { b: { ib: 2, ia: 1 }, a: 1 };
alpha.sort(obj, true);
// => { a: 1, b: { ia: 1, ib: 2 }}

API

sort(obj, recursive)

Sort an object or an array. alpha-order will only sort POJOs and arrays. It will not sort classes.

• obj - {Object | Array} the object or array to be sorted
• recursive - {Boolean} if true, will recursively sort nested objects or arrays.

Returns: {Object | Array} a newly sorted object or array

Contributing

Ensure that all linting and codestyle tasks are passing. Add unit tests for any new or changed functionality.

To start contributing, install the git prepush hooks:

make githooks

Before committing, lint and test your code using the included Makefile:

make prepush

License

Copyright (c) 2018 Alex Liu

Licensed under the MIT license.