fn get_required_parameter_in_box<T: SafeFromJSValConvertible + Trace>(
cx: &mut JSContext,
object: HandleObject<'_>,
parameter: &CStr,
option: T::Config,
) -> Fallible<RootedTraceableBox<T>>Expand description
Helper to retrieve a required paramter, in RootedTraceableBox, from WebIDL dictionary.