Forked from query-string: "5.1.1" with ES5 support and fixed sort() in parse method.

query-string  

> Parse and stringify URL query strings

---

^{My open source work is supported by the community}

^{Special thanks to:}

---

Install

``
$ npm install query-string
`

This module targets Node.js 6 or later and the latest version of Chrome, Firefox, and Safari. If you want support for older browsers, or, if your project is using create-react-app v1, use version 5: npm install query-string@5.

Usage

`js
const queryString = require('query-string');

console.log(location.search);
//=> '?foo=bar'

const parsed = queryString.parse(location.search);
console.log(parsed);
//=> {foo: 'bar'}

console.log(location.hash);
//=> '#token=bada55cafe'

const parsedHash = queryString.parse(location.hash);
console.log(parsedHash);
//=> {token: 'bada55cafe'}

parsed.foo = 'unicorn';
parsed.ilike = 'pizza';

const stringified = queryString.stringify(parsed);
//=> 'foo=unicorn&ilike=pizza'

location.search = stringified;
// note that location.search automatically prepends a question mark
console.log(location.search);
//=> '?foo=unicorn&ilike=pizza'
`

API

$3

Parse a query string into an object. Leading ? or # are ignored, so you can pass location.search or location.hash directly.

The returned object is created with Object.create(null) and thus does not have a prototype.

#### options

Type: object

##### decode

Type: boolean\
Default: true

Decode the keys and values. URL components are decoded with decode-uri-component.

##### arrayFormat

Type: string\
Default: 'none'

- 'bracket': Parse arrays with bracket representation:

`js
const queryString = require('query-string');

queryString.parse('foo[]=1&foo[]=2&foo[]=3', {arrayFormat: 'bracket'});
//=> {foo: ['1', '2', '3']}
`

- 'index': Parse arrays with index representation:

`js
const queryString = require('query-string');

queryString.parse('foo[0]=1&foo[1]=2&foo[3]=3', {arrayFormat: 'index'});
//=> {foo: ['1', '2', '3']}
`

- 'comma': Parse arrays with elements separated by comma:

`js
const queryString = require('query-string');

queryString.parse('foo=1,2,3', {arrayFormat: 'comma'});
//=> {foo: ['1', '2', '3']}
`

- 'separator': Parse arrays with elements separated by a custom character:

`js
const queryString = require('query-string');

queryString.parse('foo=1|2|3', {arrayFormat: 'separator', arrayFormatSeparator: '|'});
//=> {foo: ['1', '2', '3']}
`

- 'none': Parse arrays with elements using duplicate keys:

`js
const queryString = require('query-string');

queryString.parse('foo=1&foo=2&foo=3');
//=> {foo: ['1', '2', '3']}
`

##### arrayFormatSeparator

Type: string\
Default: ','

The character used to separate array elements when using {arrayFormat: 'separator'}.

##### sort

Type: Function | boolean\
Default: true

Supports both Function as a custom sorting function or false to disable sorting.

##### parseNumbers

Type: boolean\
Default: false

`js
const queryString = require('query-string');

queryString.parse('foo=1', {parseNumbers: true});
//=> {foo: 1}
`

Parse the value as a number type instead of string type if it's a number.

##### parseBooleans

Type: boolean\
Default: false

`js
const queryString = require('query-string');

queryString.parse('foo=true', {parseBooleans: true});
//=> {foo: true}
`

Parse the value as a boolean type instead of string type if it's a boolean.

$3

Stringify an object into a query string and sorting the keys.

#### options

Type: object

##### strict

Type: boolean\
Default: true

Strictly encode URI components with strict-uri-encode. It uses encodeURIComponent if set to false. You probably don't care about this option.

##### encode

Type: boolean\
Default: true

URL encode the keys and values.

##### arrayFormat

Type: string\
Default: 'none'

- 'bracket': Serialize arrays using bracket representation:

`js
const queryString = require('query-string');

queryString.stringify({foo: [1, 2, 3]}, {arrayFormat: 'bracket'});
//=> 'foo[]=1&foo[]=2&foo[]=3'
`

- 'index': Serialize arrays using index representation:

`js
const queryString = require('query-string');

queryString.stringify({foo: [1, 2, 3]}, {arrayFormat: 'index'});
//=> 'foo[0]=1&foo[1]=2&foo[2]=3'
`

- 'comma': Serialize arrays by separating elements with comma:

`js
const queryString = require('query-string');

queryString.stringify({foo: [1, 2, 3]}, {arrayFormat: 'comma'});
//=> 'foo=1,2,3'
`

- 'none': Serialize arrays by using duplicate keys:

`js
const queryString = require('query-string');

queryString.stringify({foo: [1, 2, 3]});
//=> 'foo=1&foo=2&foo=3'
`

##### arrayFormatSeparator

Type: string\
Default: ','

The character used to separate array elements when using {arrayFormat: 'separator'}.

##### sort

Type: Function | boolean

Supports both Function as a custom sorting function or false to disable sorting.

`js
const queryString = require('query-string');

const order = ['c', 'a', 'b'];

queryString.stringify({a: 1, b: 2, c: 3}, {
sort: (a, b) => order.indexOf(a) - order.indexOf(b)
});
//=> 'c=3&a=1&b=2'
`

`js
const queryString = require('query-string');

queryString.stringify({b: 1, c: 2, a: 3}, {sort: false});
//=> 'b=1&c=2&a=3'
`

If omitted, keys are sorted using Array#sort(), which means, converting them to strings and comparing strings in Unicode code point order.

##### skipNull

Skip keys with null as the value.

Note that keys with undefined as the value are always skipped.

Type: boolean\
Default: false

`js
const queryString = require('query-string');

queryString.stringify({a: 1, b: undefined, c: null, d: 4}, {
skipNull: true
});
//=> 'a=1&d=4'
`

`js
const queryString = require('query-string');

queryString.stringify({a: undefined, b: null}, {
skipNull: true
});
//=> ''
`

##### skipEmptyString

Skip keys with an empty string as the value.

Type: boolean\
Default: false

`js
const queryString = require('query-string');

queryString.stringify({a: 1, b: '', c: '', d: 4}, {
skipEmptyString: true
});
//=> 'a=1&d=4'
`

`js
const queryString = require('query-string');

queryString.stringify({a: '', b: ''}, {
skipEmptyString: true
});
//=> ''
`

$3

Extract a query string from a URL that can be passed into .parse().

Note: This behaviour can be changed with the skipNull option.

$3

Extract the URL and the query string as an object.

Returns an object with a url and query property.

If the parseFragmentIdentifier option is true, the object will also contain a fragmentIdentifier property.

`js
const queryString = require('query-string');

queryString.parseUrl('https://foo.bar?foo=bar');
//=> {url: 'https://foo.bar', query: {foo: 'bar'}}

queryString.parseUrl('https://foo.bar?foo=bar#xyz', {parseFragmentIdentifier: true});
//=> {url: 'https://foo.bar', query: {foo: 'bar'}, fragmentIdentifier: 'xyz'}
`

#### options

Type: object

The options are the same as for .parse().

Extra options are as below.

##### parseFragmentIdentifier

Parse the fragment identifier from the URL.

Type: boolean\
Default: false

`js
const queryString = require('query-string');

queryString.parseUrl('https://foo.bar?foo=bar#xyz', {parseFragmentIdentifier: true});
//=> {url: 'https://foo.bar', query: {foo: 'bar'}, fragmentIdentifier: 'xyz'}
`

$3

Stringify an object into a URL with a query string and sorting the keys. The inverse of .parseUrl()

The options are the same as for .stringify().

Returns a string with the URL and a query string.

Query items in the query property overrides queries in the url property.

The fragmentIdentifier property overrides the fragment identifier in the url property.

`js
queryString.stringifyUrl({url: 'https://foo.bar', query: {foo: 'bar'}});
//=> 'https://foo.bar?foo=bar'

queryString.stringifyUrl({url: 'https://foo.bar?foo=baz', query: {foo: 'bar'}});
//=> 'https://foo.bar?foo=bar'

queryString.stringifyUrl({
url: 'https://foo.bar',
query: {
top: 'foo'
},
fragmentIdentifier: 'bar'
});
//=> 'https://foo.bar?top=foo#bar'
`

#### object

Type: object

##### url

Type: string

The URL to stringify.

##### query

Type: object

Query items to add to the URL.

Nesting

This module intentionally doesn't support nesting as it's not spec'd and varies between implementations, which causes a lot of edge cases.

You're much better off just converting the object to a JSON string:

`js
const queryString = require('query-string');

queryString.stringify({
foo: 'bar',
nested: JSON.stringify({
unicorn: 'cake'
})
});
//=> 'foo=bar&nested=%7B%22unicorn%22%3A%22cake%22%7D'
`

However, there is support for multiple instances of the same key:

`js
const queryString = require('query-string');

queryString.parse('likes=cake&name=bob&likes=icecream');
//=> {likes: ['cake', 'icecream'], name: 'bob'}

queryString.stringify({color: ['taupe', 'chartreuse'], id: '515'});
//=> 'color=taupe&color=chartreuse&id=515'
`

Falsy values

Sometimes you want to unset a key, or maybe just make it present without assigning a value to it. Here is how falsy values are stringified:

`js
const queryString = require('query-string');

queryString.stringify({foo: false});
//=> 'foo=false'

queryString.stringify({foo: null});
//=> 'foo'

queryString.stringify({foo: undefined});
//=> ''
``

query-string for enterprise

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