Available on js
@:value(cast "error")@:impl@:enuminlineread onlyERROR:RequestRedirect = "error"
@:value(cast "follow")@:impl@:enuminlineread onlyFOLLOW:RequestRedirect = "follow"
@:value(cast "manual")@:impl@:enuminlineread onlyMANUAL:RequestRedirect = "manual"