p5-JSON-MaybeXS

Use Cpanel::JSON::XS with a fallback to JSON::PP

JSON::MaybeXS tries to load Cpanel::JSON::XS, and if that fails instead tries to load JSON::PP. If neither is available, an exception will be thrown. It then exports the encode_json and decode_json functions from the loaded module, along with a JSON constant that returns the class name for calling new on.