# caseless

**Repository Path**: mirrors_addons/caseless

## Basic Information

- **Project Name**: caseless
- **Description**: Caseless object set/get/has, very useful when working with HTTP headers.
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-05-03
- **Last Updated**: 2025-12-27

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## Caseless -- wrap an object to set and get property with caseless semantics but also preserve caseing.

This library is incredibly useful when working with HTTP headers. It allows you to get/set/check/delete headers in a caseless manner while also preserving the headers' case when they are first set.

## Usage

```javascript
var headers = {}
  , c = caseless(headers)
  ;
c.set('a-Header', 'asdf')
c.get('a-header') === 'asdf'
```

## has(key)

Has takes a name and if it finds a matching header will return that header name with the preserved caseing it was set with.

```javascript
c.has('a-header') === 'a-Header'
```

## set(key, value[, clobber=true])

Set is fairly straight forward except that if the header exists and clobber is disabled it will add `','+value` to the existing header.

```javascript
c.set('a-Header', 'fdas')
c.set('a-HEADER', 'more', false)
c.get('a-header') === 'fdsa,more'
```

## swap(key)

Swaps the casing of a header with the new one that is passed in.

```javascript
var headers = {}
  , c = caseless(headers)
  ;
c.set('a-Header', 'fdas')
c.swap('a-HEADER')
c.has('a-header') === 'a-HEADER'
headers === {'a-HEADER': 'fdas'}
```

## del(key)

Deletes a key and, if there's many instances of the key with multiple cases, all of them.

```javascript

var headers = {
  'a-Header': true,
  'content-length': 312,
  'Content-Length': 312
}
var c = caseless(headers);

c.del('Content-length');
headers === {
  'a-Header': true
};

```