ProgressEvent 构造函数

ProgressEvent(
  1. String type,
  2. [Map? eventInitDict]
)

实现

factory ProgressEvent(String type, [Map? eventInitDict]) {
  if (eventInitDict != null) {
    var eventInitDict_1 = convertDartToNative_Dictionary(eventInitDict);
    return ProgressEvent._create_1(type, eventInitDict_1);
  }
  return ProgressEvent._create_2(type);
}