Ale-url-parser NPM

ale-url-parser

🍺 Top fermented URL parser and stringifier built with performance and small size (1.6KB) in mind.

Installation

$ npm i ale-url-parser

Usage

parse :: String -> Object

Parse url string and return url object.

const { parse } = require('ale-url-parser');

Basic example

parse('http://domain.lol/lorem/ipsum?foo=1&bar=2#baz');

{
    protocol: 'http',
    host: 'domain.lol',
    path: ['lorem', 'ipsum'],
    query: { foo: '1', bar: '2' },
    hash: 'baz'
}

Preserve protocol

parse('//domain.lol');

{
    protocol: '',
    host: 'domain.lol',
    path: [], query: {}, hash: ''
}

Http by default

parse('domain.lol');

{
    protocol: 'http',
    host: 'domain.lol',
    path: [], query: {}, hash: ''
}

Multi-valued query parameters

parse('domain.lol?foo=1&foo=2&bar=3');

{
    protocol: 'http',
    host: 'domain.lol',
    path: [],
    query: { foo: ['1', '2'], bar: '3' },
    hash: ''
}

Parsing relative urls

parse('?foo=1');

{
    protocol: 'http',
    host: '',
    path: [],
    query: { foo: '1' },
    hash: ''
}

stringify :: Object -> String

Stringify url object to url string.

const { stringify } = require('ale-url-parser');

Basic example

stringify({
    protocol: 'https',
    host: 'domain.lol',
    path: ['lorem', 'ipsum'],
    query: { foo: '1', bar: '2' },
    hash: 'baz'
});

"https://domain.lol/lorem/ipsum?foo=1&bar=2#baz"

Preserve protocol

stringify({
    protocol: '',
    host: 'domain.lol'
});

"//domain.lol"

Multi-valued query parameters

stringify({
    protocol: 'https',
    host: 'domain.lol',
    query: { foo: ['1', '2'], bar: '/baz' }
});

"https://domain.lol?foo=1&foo=2&bar=%2Fbaz"

Build relative urls

stringify({
    path: ['lorem', 'ipsum'],
    query: { foo: '1', bar: '2' }
});

"/lorem/ipsum?foo=1&bar=2"

Sort query params with custom compareFunction

Sorting query params is disabled by default. You can define your own sorting method by passing compareFunction:

const order = ['first', 'second', 'third', 'fourth'];
stringify({
    host: 'domain.lol',
    query: { third: '3', first: '1', fourth: '4', second: '2' }
}, {
    compareFunction: (a, b) => order.indexOf(a) > order.indexOf(b)
});

"http://domain.lol?first=1&second=2&third=3&fourth=4"

Caveats

ale-url-parser is limited to be used with http and https protocols though context-aware protocol guess is supported by passing an empty string to stringify function, i.e. protocol: ''.

Benchmarks

$ npm t && npm run prepare && node ./tests/benchmark-parse.js

[simple] ale-url-parser x 124,203 ops/sec ±0.67% (91 runs sampled)
[simple] url x 75,006 ops/sec ±1.03% (89 runs sampled)
[simple] query-string x 47,283 ops/sec ±0.77% (86 runs sampled)
[simple] fast-url-parser x 237,420 ops/sec ±0.66% (91 runs sampled)
[simple] Fastest is fast-url-parser
[complex] ale-url-parser x 16,846 ops/sec ±0.58% (89 runs sampled)
[complex] url x 8,104 ops/sec ±0.71% (86 runs sampled)
[complex] query-string x 5,884 ops/sec ±0.80% (87 runs sampled)
[complex] fast-url-parser x 15,430 ops/sec ±0.92% (87 runs sampled)

https://jsperf.com/ale-url-parser-vs-new-url

TypeScript definitions

Type definitions for ale-url-parser are declared in DefinitelyTyped repository. We recommend installing @types/ale-url-parser for a better experience