sort-array

What is sort-array?

The sort-array npm package is a utility for sorting arrays of objects or primitive values. It provides a simple and flexible API to sort arrays based on various criteria, including multiple fields and custom comparator functions.

What are sort-array's main functionalities?

Sort by Single Field

This feature allows you to sort an array of objects by a single field. In this example, the array of objects is sorted by the 'age' field.

const sortArray = require('sort-array');
const data = [{ name: 'John', age: 30 }, { name: 'Jane', age: 25 }, { name: 'Jim', age: 35 }];
const sortedData = sortArray(data, { by: 'age' });
console.log(sortedData);

Sort by Multiple Fields

This feature allows you to sort an array of objects by multiple fields. In this example, the array is first sorted by 'age' and then by 'name'.

const sortArray = require('sort-array');
const data = [{ name: 'John', age: 30 }, { name: 'Jane', age: 25 }, { name: 'Jim', age: 35 }];
const sortedData = sortArray(data, { by: ['age', 'name'] });
console.log(sortedData);

Sort in Descending Order

This feature allows you to sort an array of objects in descending order. In this example, the array is sorted by the 'age' field in descending order.

const sortArray = require('sort-array');
const data = [{ name: 'John', age: 30 }, { name: 'Jane', age: 25 }, { name: 'Jim', age: 35 }];
const sortedData = sortArray(data, { by: 'age', order: 'desc' });
console.log(sortedData);

Custom Comparator Function

This feature allows you to use a custom comparator function to sort the array. In this example, the array of numbers is sorted in descending order using a custom comparator function.

const sortArray = require('sort-array');
const data = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5];
const sortedData = sortArray(data, { comparator: (a, b) => b - a });
console.log(sortedData);

Other packages similar to sort-array

lodash

Lodash is a popular utility library that provides a wide range of functions for manipulating arrays, objects, and other data types. It includes a `_.sortBy` function that can be used to sort arrays of objects by one or more fields. Compared to sort-array, Lodash offers a broader set of utilities beyond just sorting.

underscore

Underscore is another utility library similar to Lodash, providing a variety of functions for working with arrays, objects, and other data types. It includes an `_.sortBy` function for sorting arrays of objects. Like Lodash, Underscore offers a comprehensive set of utilities in addition to sorting.

array-sort

array-sort is a lightweight package specifically designed for sorting arrays of objects. It provides a simple API for sorting by one or more fields. Compared to sort-array, array-sort is more focused on sorting and does not include additional utilities.

README

sort-array

Isomorphic, load-anywhere function to sort an array by scalar, deep or computed values in any standard or custom order.

const sortArray = require('sort-array')

Synopsis

Some trivial examples to demonstrate typical usage.

Sorting an array of primitives

Ascending order

Sort an array of strings in ascending order (the default).

> const partsOfTheDay = ['twilight', 'afternoon', 'morning', 'evening']

> sortArray(partsOfTheDay)
[ 'afternoon', 'evening', 'morning', 'twilight' ]

Descending order

Sort an array of strings in descending order.

> sortArray(partsOfTheDay, { order: 'desc' })
[ 'twilight', 'morning', 'evening', 'afternoon' ]

Custom sort order

The default value for options.order is 'asc'. You can also specify 'desc' or the name of a property from the customOrders object. For example, sort parts of the day by the order in which they occur.

> sortArray(partsOfTheDay, {
  order: 'time',
  customOrders: {
    time: ['morning', 'afternoon', 'evening', 'twilight']
  }
})
[ 'morning', 'afternoon', 'evening', 'twilight' ]

Sorting an array of objects

Sort by object property

Pass one or more property names to options.by to sort an array of objects by those properties.

> const repositories = [
  { name: '75lb/sort-array', openIssues: 0, closedIssues: 4 },
  { name: 'lwsjs/local-web-server', openIssues: 4, closedIssues: 80 },
  { name: 'jsdoc2md/jsdoc-api', openIssues: 3, closedIssues: 47 }
]

> sortArray(repositories, {
  by: 'openIssues',
  order: 'desc'
})
[
  { name: 'lwsjs/local-web-server', openIssues: 4, closedIssues: 80 },
  { name: 'jsdoc2md/jsdoc-api', openIssues: 3, closedIssues: 47 },
  { name: '75lb/sort-array', openIssues: 0, closedIssues: 4 }
]

Sort by computed field

Sort by a computed field, i.e. a computed value that doesn't exist in the input dataset. Define your computed fields in the options.computed object, each value being a function which takes an array member as input and returns the primitive value to be sorted by. In this example we sort by total (the name of the computed field supplied in options.computed).

> const repositories = [
  { name: '75lb/sort-array', openIssues: 0, closedIssues: 4 },
  { name: 'lwsjs/local-web-server', openIssues: 4, closedIssues: 80 },
  { name: 'jsdoc2md/jsdoc-api', openIssues: 3, closedIssues: 47 }
]

> sortArray(repositories, {
  by: 'total',
  order: 'desc',
  computed: {
    total: repository => repository.openIssues + repository.closedIssues
  }
})
[
  { name: 'lwsjs/local-web-server', openIssues: 4, closedIssues: 80 },
  { name: 'jsdoc2md/jsdoc-api', openIssues: 3, closedIssues: 47 },
  { name: '75lb/sort-array', openIssues: 0, closedIssues: 4 }
]

Sort by deep object values

You can use computed fields to sort by values deep in an object structure.

> const data = [
  { inner: { number: 2 } },
  { inner: { number: 3 } },
  { inner: { number: 1 } }
]

> sortArray(data, {
  by: 'number',
  computed: {
    number: row => row.inner.number
  }
})
[
  { inner: { number: 1 } },
  { inner: { number: 2 } },
  { inner: { number: 3 } }
]

Sort by multiple fields

Sort by multiple columns using multiple custom orders.

> const attributes = [
  { skill: 'accuracy', confidence: 'medium' },
  { skill: 'power', confidence: 'high' },
  { skill: 'speed', confidence: 'low' },
  { skill: 'power', confidence: 'low' },
  { skill: 'speed', confidence: 'high' },
  { skill: 'accuracy', confidence: 'low' },
  { skill: 'speed', confidence: 'medium' },
  { skill: 'accuracy', confidence: 'high' },
  { skill: 'power', confidence: 'medium' }
]

> sortArray(attributes, {
  by: ['skill', 'confidence'],
  order: ['skill', 'confidence'],
  customOrders: {
    skill: ['accuracy', 'speed', 'power'],
    confidence: ['low', 'medium', 'high'],
  }
})
[
  { skill: 'accuracy', confidence: 'low' },
  { skill: 'accuracy', confidence: 'medium' },
  { skill: 'accuracy', confidence: 'high' },
  { skill: 'speed', confidence: 'low' },
  { skill: 'speed', confidence: 'medium' },
  { skill: 'speed', confidence: 'high' },
  { skill: 'power', confidence: 'low' },
  { skill: 'power', confidence: 'medium' },
  { skill: 'power', confidence: 'high' }
]

Please visit the sort-array wiki for more examples.

API Reference

sort-array

Isomorphic, load-anywhere function to sort an array by scalar, deep or computed values in any standard or custom order.

Example

const sortArray = require('sort-array')

sortArray(array, [options]) ⇒ Array ⏏

Kind: Exported function
Returns: Array - Returns the array that was passed in.

Param	Type	Description
array	Array	The input array to sort. It is sorted in place.
[options]	object	Sort options.
[options.by]	Array.<string>	One or more property names or computed fields to sort by. Specifying property names is only relevant when sorting an array of objects.
[options.order]	Array.<string>	One or more sort orders. Specify 'asc', 'desc' or a property name from the options.customOrders object.
[options.customOrders]	object	A dictionary object containing one or more custom orders. Each custom order value must be an array defining the order expected values must be sorted in.
[options.computed]	object	A dictionary object containing one or more computed field functions. The function will be invoked once per item in the array. Each invocation will receive the array item as input and must return a primitive value by which the array can be sorted.
[options.nullRank]	number	Configures whether null values will be sorted before or after defined values. Set to -1 for before, 1 for after. Defaults to 1.
[options.undefinedRank]	number	Configures whether undefined values will be sorted before or after defined values. Set to -1 for before, 1 for after. Defaults to 1.

Load anywhere

This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.

Node.js:

const arrayify = require('sort-array')

Within Node.js with ECMAScript Module support enabled:

import arrayify from 'sort-array'

Within an modern browser ECMAScript Module:

import arrayify from './node_modules/sort-array/dist/index.mjs'

Old browser (adds window.sortArray):

<script nomodule src="./node_modules/sort-array/dist/index.js"></script>

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© 2015-20 Lloyd Brookes <[e-mail]>.

Isomorphic test suite by test-runner and web-runner. Documented by jsdoc-to-markdown.