qss
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A tiny (305B) browser utility for stringifying a query Object.
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# qss [](https://travis-ci.org/lukeed/qss)
> A tiny (305B) browser utility for stringifying a query Object.
You should only consider using this within a browser context since Node's built-in [`querystring.stringify`](https://nodejs.org/api/querystring.html#querystring_querystring_stringify_obj_sep_eq_options) is [much faster](#benchmarks) and _should be_ used in a Node environment! An ideal use case is serializing a query object before an API request is sent.
This module exposes three module definitions:
* **ES Module**: `dist/qss.mjs`
* **CommonJS**: `dist/qss.js`
* **UMD**: `dist/qss.min.js`
## Install
```
$ npm install --save qss
```
## Usage
```js
import { encode, decode } from 'qss';
encode({ foo:'hello', bar:[1,2,3], baz:true });
//=> 'foo=hello&bar=1&bar=2&bar=3&baz=true'
encode({ foo:123 }, '?');
//=> '?foo=123'
encode({ bar:'world' }, 'foo=hello&');
//=> 'foo=hello&bar=world'
decode('foo=hello&bar=1&bar=2&bar=3&baz=true');
//=> { foo:'hello', bar:[1,2,3], baz:true };
```
## API
### qss.encode(params, prefix)
Returns: `String`
Returns the formatted querystring.
#### params
Type: `Object`
The object that contains all query parameter keys & their values.
#### prefix
Type: `String`<br>
Default: `''`
An optional prefix. The stringified `params` will be appended to this value, so it must end with your desired joiner; eg `?`.
> **Important:** No checks or validations will run on your `prefix`. Similarly, no character is used to "glue" the query string to your `prefix` string.
### qss.decode(query)
Returns: `Object`
Returns an Object with decoded keys and values.
Repetitive keys will form an Array of its values. Also, `qss` will attempt to typecast `Boolean` and `Number` values.
#### query
Type: `String`
The query string, without its leading `?` character.
```js
qss.decode(
location.search.substring(1) // removes the "?"
);
```
## Benchmarks
> Running Node v10.13.0
***Encode***
```
qss x 1,112,341 ops/sec ±0.24% (96 runs sampled)
native x 5,303,246 ops/sec ±0.76% (95 runs sampled)
querystringify x 950,501 ops/sec ±0.76% (96 runs sampled)
query-string x 347,603 ops/sec ±1.05% (92 runs sampled)
qs x 733,449 ops/sec ±0.62% (97 runs sampled)
```
***Decode***
```
qss x 443,667 ops/sec ±0.17% (95 runs sampled)
native x 189,194 ops/sec ±0.44% (94 runs sampled)
querystringify x 282,169 ops/sec ±0.26% (96 runs sampled)
query-string x 191,334 ops/sec ±0.71% (95 runs sampled)
qs x 168,165 ops/sec ±0.41% (93 runs sampled)
```
## License
MIT © [Luke Edwards](https://lukeed.com)