I just had a short talk with Darin Fisher and he suggested that instead of .responseType taking a string value, that it could be an enum value of XMLHttpRequest, something like:
const unsigned short RESPONSETYPE_DEFAULT = 0; const unsigned short RESPONSETYPE_BINARY = 1; const unsigned short RESPONSETYPE_BLOB = 2; const unsigned short RESPONSETYPE_STREAM = 3; Then it would be more easily discoverable if a particular type was supported. Chris