sort-keys

What is sort-keys?

The sort-keys npm package is used to sort the keys of an object, either in ascending or descending order, based on a custom comparator function if provided. This can be particularly useful for organizing JSON objects for readability or for ensuring that objects are in a consistent order when stringifying them, which can be important for hashing and caching mechanisms.

What are sort-keys's main functionalities?

Sort keys in ascending order

Sorts the keys of an object in ascending order. This is the default behavior without providing any additional options.

const sortKeys = require('sort-keys');

const sorted = sortKeys({c: 0, a: 0, b: 0});
console.log(sorted); // Output: { a: 0, b: 0, c: 0 }

Sort keys using a custom comparator

Sorts the keys of an object using a custom comparator function. In this example, the keys are sorted in descending order.

const sortKeys = require('sort-keys');

const sorted = sortKeys({a: 0, b: 1, c: 2}, {
  compare: (a, b) => b.localeCompare(a)
});
console.log(sorted); // Output: { c: 2, b: 1, a: 0 }

Deep sorting of nested objects

Sorts the keys of an object and all nested objects. This is useful for deep sorting complex objects.

const sortKeys = require('sort-keys');

const obj = {
  c: {c2: 0, c1: 0},
  a: {a2: 0, a1: 0},
  b: 0
};
const sorted = sortKeys(obj, {deep: true});
console.log(sorted); // Output: { a: { a1: 0, a2: 0 }, b: 0, c: { c1: 0, c2: 0 } }

Other packages similar to sort-keys

lodash.sortby

Provides a function to sort arrays of objects based on the values at specified keys. While sort-keys sorts the keys of an object, lodash.sortby sorts the elements of an array based on one or more properties.

deep-sort-object

Similar to sort-keys with deep sorting capabilities, but deep-sort-object is specifically designed to handle deep sorting of objects without the need for additional configuration.

README

sort-keys

Sort the keys of an object

Useful to get a deterministically ordered object, as the order of keys can vary between engines.

Install

$ npm install sort-keys

Usage

const sortKeys = require('sort-keys');

sortKeys({c: 0, a: 0, b: 0});
//=> {a: 0, b: 0, c: 0}

sortKeys({b: {b: 0, a: 0}, a: 0}, {deep: true});
//=> {a: 0, b: {a: 0, b: 0}}

sortKeys({b: [{b: 0, a: 0}], a: 0}, {deep: true});
//=> {a: 0, b: [{a: 0, b: 0}]}

sortKeys({c: 0, a: 0, b: 0}, {
	compare: (a, b) => -a.localeCompare(b)
});
//=> {c: 0, b: 0, a: 0}

sortKeys([{b: 0, a:2}], {deep: true});
//=> [{a: 2, b: 0}]

API

sortKeys(object, options?)

Returns a new object with sorted keys.

object

Type: object | Array

options

Type: object

deep

Type: boolean
Default: false

Recursively sort keys, including keys of objects inside arrays.

compare

Type: Function

Compare function.

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