how to filter null values from map in Dart

Question

Following the map, having both key-value pair as dynamic, Write a logic to filter all the null values from Map without us?

Is there any other approach than traversin

Answer 1

You can now use a map literal with conditional entries:

Map toMap() => {
  if (firstName != null) 'firstName': firstName,
  if (lastName != null) 'lastName': lastName,
};