Polyform.Validators.UrlEncoded.Parser

decodeURIComponentImpl :: String -> Nullable String

decodeURIComponent :: String -> Maybe String

type Options = { replacePlus :: Boolean }

Browsers serialize space as + character which is incorrect according to the RFC 3986 but it is spread behavior accross tested engines.

I've written about this issue extensively: https://github.com/owickstrom/hyper/pull/62

If we want to be able to optionally distinct this + on the server side we have to convert it to %2b before decoding phase (as it is done in all investigated libraries - please check first post in the above thread).

defaultOptions :: Options

parse :: Options -> String -> Either String Decoded