This library is incredibly useful when working with HTTP headers. It allows you to get/set/check for headers in a caseless manner while also preserving the caseing of headers the first time they are set.
var headers = {} , c = caseless(headers) ; c.set('a-Header', 'asdf') c.get('a-header') === 'asdf'
Has takes a name and if it finds a matching header will return that header name with the preserved caseing it was set with.
c.has('a-header') === 'a-Header'
Set is fairly straight forward except that if the header exists and clobber is disabled it will add ','+value
to the existing header.
c.set('a-Header', 'fdas') c.set('a-HEADER', 'more', false) c.get('a-header') === 'fdsa,more'
Swaps the casing of a header with the new one that is passed in.
var headers = {} , c = caseless(headers) ; c.set('a-Header', 'fdas') c.swap('a-HEADER') c.has('a-header') === 'a-HEADER' headers === {'a-HEADER': 'fdas'}