fast-natural-order-by 
Lightweight (< 2.3kB gzipped) and performant natural sorting of arrays and collections by differentiating between unicode characters, numbers, dates, etc.
A fork of natural-orderby that fixes performance when sorting strings longer than 20 characters (~150,000x faster). Also, re-written from Flow to Typescript
Install
$ yarn add @shelf/fast-natural-order-by
Intro
People sort strings containing numbers differently than most sorting algorithms, which sort values by comparing strings in Unicode code point order. This produces an ordering that is inconsistent with human logic.
@shelf/fast-natural-order-by sorts the primitive values of Boolean, Null, Undefined, Number or String type as well as Date objects. When comparing strings it differentiates between unicode characters, integer, floating as well as hexadecimal numbers, various date formats, etc. You may sort flat or nested arrays or arrays of objects in a natural sorting order using @shelf/fast-natural-order-by.
In addition to the efficient and fast orderBy() method @shelf/fast-natural-order-by also provides the method compare(), which may be passed to Array.prototype.sort().
Benchmark
This is a fork of natural-orderby that fixes performance when sorting strings longer than 20 characters (~150,000x faster).
Here are the benchmark results of sorting array with ONE SINGLE (1) element with a string 200 chars long that you can run by running yarn benchmark command:
original:
5 ops/s, ±0.29% | slowest, 100% slower
optimized:
773 712 ops/s, ±0.24% | fastest
See this commit to udnerstand how the performance was fixed.
Usage
import {orderBy} from '@shelf/fast-natural-order-by';
const users = [
{
username: 'Bamm-Bamm',
ip: '192.168.5.2',
datetime: 'Fri Jun 15 2018 16:48:00 GMT+0200 (CEST)',
},
{
username: 'Wilma',
ip: '192.168.10.1',
datetime: '14 Jun 2018 00:00:00 PDT',
},
{
username: 'Dino',
ip: '192.168.0.2',
datetime: 'June 15, 2018 14:48:00',
},
{
username: 'Barney',
ip: '192.168.1.1',
datetime: 'Thu, 14 Jun 2018 07:00:00 GMT',
},
{
username: 'Pebbles',
ip: '192.168.1.21',
datetime: '15 June 2018 14:48 UTC',
},
{
username: 'Hoppy',
ip: '192.168.5.10',
datetime: '2018-06-15T14:48:00.000Z',
},
];
const sortedUsers = orderBy(users, [v => v.datetime, v => v.ip], ['desc', 'asc']);
This is the return value of orderBy():
[
{
username: 'Dino',
ip: '192.168.0.2',
datetime: 'June 15, 2018 14:48:00',
},
{
username: 'Pebbles',
ip: '192.168.1.21',
datetime: '15 June 2018 14:48 UTC',
},
{
username: 'Bamm-Bamm',
ip: '192.168.5.2',
datetime: 'Fri Jun 15 2018 16:48:00 GMT+0200 (CEST)',
},
{
username: 'Hoppy',
ip: '192.168.5.10',
datetime: '2018-06-15T14:48:00.000Z',
},
{
username: 'Barney',
ip: '192.168.1.1',
datetime: 'Thu, 14 Jun 2018 07:00:00 GMT',
},
{
username: 'Wilma',
ip: '192.168.10.1',
datetime: '14 Jun 2018 00:00:00 PDT',
},
];
API Reference
orderBy()
Creates an array of elements, natural sorted by specified identifiers and the corresponding sort orders. This method implements a stable sort algorithm, which means the original sort order of equal elements is preserved. It also avoids the high overhead caused by Array.prototype.sort() invoking a compare function multiple times per element within the array.
Syntax
function orderBy<T>(
collection: ReadonlyArray<T>,
identifiers?: ReadonlyArray<Identifier<T>> | Identifier<T>,
orders?: ReadonlyArray<Order> | Order
): Array<T>;
| Type | Value |
|---|---|
Identifier<T> |
string | (value: T) => unknown) |
Order |
'asc' | 'desc' | (valueA: unknown, valueB: unknown) => number |
Description
orderBy() sorts the elements of an array by specified identifiers and the corresponding sort orders in a natural order and returns a new array containing the sorted elements.
If collection is an array of primitives, identifiers may be unspecified. Otherwise, you should specify identifiers to sort by or collection will be returned unsorted. An identifier can beexpressed by:
- an index position, if
collectionis a nested array, - a property name, if
collectionis an array of objects, - a function which returns a particular value from an element of a nested array or an array of objects. This function will be invoked by passing one element of
collection.
If orders is unspecified, all values are sorted in ascending order. Otherwise, specify an order of 'desc' for descending or 'asc' for ascending sort order of corresponding values. You may also specify a compare function for an order, which will be invoked by two arguments: (valueA, valueB). It must return a number representing the sort order.
Note:
orderBy()always returns a new array, even if the original was already sorted.
Examples
import {orderBy} from '@shelf/fast-natural-order-by';
// Simple numerics
orderBy(['10', 9, 2, '1', '4']);
// => ['1', 2, '4', 9, '10']
// Floats
orderBy(['10.0401', 10.022, 10.042, '10.021999']);
// => ['10.021999', 10.022, '10.0401', 10.042]
// Float & decimal notation
orderBy(['10.04f', '10.039F', '10.038d', '10.037D']);
// => ['10.037D', '10.038d', '10.039F', '10.04f']
// Scientific notation
orderBy(['1.528535047e5', '1.528535047e7', '1.528535047e3']);
// => ['1.528535047e3', '1.528535047e5', '1.528535047e7']
// IP addresses
orderBy(['192.168.201.100', '192.168.201.12', '192.168.21.1']);
// => ['192.168.21.1', '192.168.201.12', '192.168.21.100']
// Filenames
orderBy([
'01asset_0815.png',
'asset_47103.jpg',
'asset_151.jpg',
'001asset_4711.jpg',
'asset_342.mp4',
]);
// => ['001asset_4711.jpg', '01asset_0815.png', 'asset_151.jpg', 'asset_342.mp4', 'asset_47103.jpg']
// Filenames - ordered by extension and filename
orderBy(
['01asset_0815.png', 'asset_47103.jpg', 'asset_151.jpg', '001asset_4711.jpg', 'asset_342.mp4'],
[v => v.split('.').pop(), v => v]
);
// => ['001asset_4711.jpg', 'asset_151.jpg', 'asset_47103.jpg', 'asset_342.mp4', '01asset_0815.png']
// Dates
orderBy(['10/12/2018', '10/11/2018', '10/11/2017', '10/12/2017']);
// => ['10/11/2017', '10/12/2017', '10/11/2018', '10/12/2018']
orderBy([
'Thu, 15 Jun 2017 20:45:30 GMT',
'Thu, 3 May 2018 17:45:30 GMT',
'Thu, 15 Jun 2017 17:45:30 GMT',
]);
// => ['Thu, 15 Jun 2017 17:45:30 GMT', 'Thu, 15 Jun 2018 20:45:30 GMT', 'Thu, 3 May 2018 17:45:30 GMT']
// Money
orderBy(['$102.00', '$21.10', '$101.02', '$101.01']);
// => ['$21.10', '$101.01', '$101.02', '$102.00']
// Case-insensitive sort order
orderBy(['A', 'C', 'E', 'b', 'd', 'f']);
// => ['A', 'b', 'C', 'd', 'E', 'f']
// Default ascending sort order
orderBy(['a', 'c', 'f', 'd', 'e', 'b']);
// => ['a', 'b', 'c', 'd', 'e', 'f']
// Descending sort order
orderBy(['a', 'c', 'f', 'd', 'e', 'b'], null, ['desc']);
// => ['f', 'e', 'd', 'c', 'b', 'a']
// Custom compare function
orderBy([2, 1, 5, 8, 6, 9], null, [(valueA, valueB) => valueA - valueB]);
// => [1, 2, 5, 6, 8, 9]
// collections
const users = [
{
username: 'Bamm-Bamm',
ip: '192.168.5.2',
datetime: 'Fri Jun 15 2018 16:48:00 GMT+0200 (CEST)',
},
{
username: 'Wilma',
ip: '192.168.10.1',
datetime: '14 Jun 2018 00:00:00 PDT',
},
{
username: 'Dino',
ip: '192.168.0.2',
datetime: 'June 15, 2018 14:48:00',
},
{
username: 'Barney',
ip: '192.168.1.1',
datetime: 'Thu, 14 Jun 2018 07:00:00 GMT',
},
{
username: 'Pebbles',
ip: '192.168.1.21',
datetime: '15 June 2018 14:48 UTC',
},
{
username: 'Hoppy',
ip: '192.168.5.10',
datetime: '2018-06-15T14:48:00.000Z',
},
];
orderBy(users, [v => v.datetime, v => v.ip], ['desc', 'asc']);
// => [
// {
// username: 'Dino',
// ip: '192.168.0.2',
// datetime: 'June 15, 2018 14:48:00',
// },
// {
// username: 'Pebbles',
// ip: '192.168.1.21',
// datetime: '15 June 2018 14:48 UTC',
// },
// {
// username: 'Bamm-Bamm',
// ip: '192.168.5.2',
// datetime: 'Fri Jun 15 2018 16:48:00 GMT+0200 (CEST)',
// },
// {
// username: 'Hoppy',
// ip: '192.168.5.10',
// datetime: '2018-06-15T14:48:00.000Z',
// },
// {
// username: 'Barney',
// ip: '192.168.1.1',
// datetime: 'Thu, 14 Jun 2018 07:00:00 GMT',
// },
// {
// username: 'Wilma',
// ip: '192.168.10.1',
// datetime: '14 Jun 2018 00:00:00 PDT',
// },
// ]
compare()
Creates a compare function that defines the natural sort order and which may be passed to Array.prototype.sort().
Syntax
compare(options?: CompareOptions): CompareFn
| Type | Value |
|---|---|
CompareOptions |
{ order?: 'asc' | 'desc' } |
CompareFn |
(valueA: unknown, valueB: unknown) => number |
Description
compare() returns a compare function that defines the natural sort order and which may be passed to Array.prototype.sort().
If options or its property order is unspecified, values are sorted in ascending sort order. Otherwise, specify an order of 'desc' for descending or 'asc' for ascending sort order of values.
Examples
import { compare } from '@shelf/fast-natural-order-by';
// Simple numerics
['10', 9, 2, '1', '4'].sort(compare());
// => ['1', 2, '4', 9, '10']
// Floats
['10.0401', 10.022, 10.042, '10.021999'].sort(compare());
// => ['10.021999', 10.022, '10.0401', 10.042]
// Float & decimal notation
['10.04f', '10.039F', '10.038d', '10.037D'].sort(compare());
// => ['10.037D', '10.038d', '10.039F', '10.04f']
// Scientific notation
['1.528535047e5', '1.528535047e7', '1.528535047e3'].sort(compare());
// => ['1.528535047e3', '1.528535047e5', '1.528535047e7']
// IP addresses
['192.168.201.100', '192.168.201.12', '192.168.21.1'].sort(compare());
// => ['192.168.21.1', '192.168.201.12', '192.168.21.100']
// Filenames
['01asset_0815.jpg', 'asset_47103.jpg', 'asset_151.jpg', '001asset_4711.jpg', 'asset_342.mp4'].sort(compare());
// => ['001asset_4711.jpg', '01asset_0815.jpg', 'asset_151.jpg', 'asset_342.mp4', 'asset_47103.jpg']
// Dates
['10/12/2018', '10/11/2018', '10/11/2017', '10/12/2017'].sort(compare());
// => ['10/11/2017', '10/12/2017', '10/11/2018', '10/12/2018']
['Thu, 15 Jun 2017 20:45:30 GMT', 'Thu, 3 May 2018 17:45:30 GMT', 'Thu, 15 Jun 2017 17:45:30 GMT'].sort(compare());
// => ['Thu, 15 Jun 2017 17:45:30 GMT', 'Thu, 15 Jun 2018 20:45:30 GMT', 'Thu, 3 May 2018 17:45:30 GMT']
// Money
['$102.00', '$21.10', '$101.02', '$101.01'].sort(compare());
// => ['$21.10', '$101.01', '$101.02', '$102.00']
// Case-insensitive sort order
['A', 'C', 'E', 'b', 'd', 'f'].sort(compare());
// => ['A', 'b', 'C', 'd', 'E', 'f']
// Default ascending sort order
['a', 'c', 'f', 'd', 'e', 'b'].sort(compare());
// => ['a', 'b', 'c', 'd', 'e', 'f']
// Descending sort order
['a', 'c', 'f', 'd', 'e', 'b'].sort(compare({ order: 'desc' }));
// => ['f', 'e', 'd', 'c', 'b', 'a']
// collections
const users = [
{
username: 'Bamm-Bamm',
lastLogin: {
ip: '192.168.5.2',
datetime: 'Fri Jun 15 2018 16:48:00 GMT+0200 (CEST)'
},
},
{
username: 'Wilma',
lastLogin: {
ip: '192.168.10.1',
datetime: '14 Jun 2018 00:00:00 PDT'
},
},
{
username: 'Dino',
lastLogin: {
ip: '192.168.0.2',
datetime: 'June 15, 2018 14:48:00'
},
},
{
username: 'Barney',
lastLogin: {
ip: '192.168.1.1',
datetime: 'Thu, 14 Jun 2018 07:00:00 GMT'
},
},
{
username: 'Pebbles',
lastLogin: {
ip: '192.168.1.21',
datetime: '15 June 2018 14:48 UTC'
},
},
{
username: 'Hoppy',
lastLogin: {
ip: '192.168.5.10',
datetime: '2018-06-15T14:48:00.000Z'
},
},
];
users.sort((a, b) => compare()(a.lastLogin.ip, b.lastLogin.ip));
// => [
// {
// username: 'Dino',
// lastLogin: {
// ip: '192.168.0.2',
// datetime: 'June 15, 2018 14:48:00'
// },
// },
// {
// username: 'Barney',
// lastLogin: {
// ip: '192.168.1.1',
// datetime: 'Thu, 14 Jun 2018 07:00:00 GMT'
// },
// },
// {
// username: 'Pebbles',
// lastLogin: {
// ip: '192.168.1.21',
// datetime: '15 June 2018 14:48 UTC'
// },
// },
// {
// username: 'Bamm-Bamm',
// lastLogin: {
// ip: '192.168.5.2',
// datetime: 'Fri Jun 15 2018 16:48:00 GMT+0200 (CEST)'
// },
// },
// {
// username: 'Hoppy',
// lastLogin: {
// ip: '192.168.5.10',
// datetime: '2018-06-15T14:48:00.000Z'
// },
// },
// {
// username: 'Wilma',
// lastLogin: {
// ip: '192.168.10.1',
// datetime: '14 Jun 2018 00:00:00 PDT'
// },
// },
// ]
See Also
Credits
- @yobacca: forked from his repo to improve performance.
- @JordanAtBridgit for localizing the performance problem
- Originally inspired by The Alphanum Algorithm from Dave Koelle.
Publish
$ git checkout master
$ yarn version
$ yarn publish
$ git push origin master --tags
License
MIT © Shelf
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