simple-querystring-parser

A trivial, low footprint, no dependency, UMD-compatible url querystring parser for the browser including typescript typings

This version departs from the venerable https://github.com/sindresorhus/query-string on those points:

• only 75 lines, no dependencies, ES5
• parses only (lighter)
• attempts to do a light type inference from the values (number, boolean)
• interprets "no value" as true (boolean) XXX this is non-standard but we consider it better (i.e. interpreting it as a flag)
• typescript compatible
• UMD compatible, but also exposes itself as a global var, even when loaded by a module loader. Reason: this lib may be needed by low-level code, for ex. a "verbose" option activating logs should be detected very early, maybe from inline code without a loader.

Tested in latest Chrome, FF and Safari and PhantomJS versions.

Usage

yarn add @offirmo/simple-querystring-parser
npm install --save @offirmo/simple-querystring-parser

Base, 99% of the time:

import * as SimpleQuerystringParser from '@offirmo/simple-querystring-parser'

const options = SimpleQuerystringParser.parse(window.location.search)

The type inference covers only the most useful cases:

• trivial positive integers will be converted to numbers
• true/false will be converted to boolean (case SENSITIVE)
• nothing "" will be converted to true (boolean)

This lib DOES NOT parse arrays, for the same reasons exposed by @sindresorhus you should better use json directly.

Rare stuff:

If you don't like the type inference or want to extend it / write your own:

import * as SimpleQuerystringParser from '@offirmo/simple-querystring-parser'

SimpleQuerystringParser.parse(location.params, {
	valueDecoder: value => value
})

// just in case, the value decoder is exposed:
SimpleQuerystringParser.lightQuerystringValueDecoder('foo')

hat tips

• UMD block inspired from https://github.com/umdjs/umd/blob/master/templates/returnExportsGlobal.js
• borrowed some ideas from https://github.com/sindresorhus/query-string
• borrowed some ideas from colleagues

License

The UNLICENSE

CONTRIBUTING

Very simple. Some crappy unit tests. Try to keep the design principles.