getUserMedia method Null safety

Future<MediaStream> getUserMedia (
  1. [Map? constraints]
)

Implementation

Future<MediaStream> getUserMedia([Map? constraints]) {
  var constraints_dict = null;
  if (constraints != null) {
    constraints_dict = convertDartToNative_Dictionary(constraints);
  }
  return promiseToFuture<MediaStream>(
      JS("", "#.getUserMedia(#)", this, constraints_dict));
}