Flutter JSON Serialization - Not generating *.g.dart files

Question

I am new to flutter and the objective is to serialise complex JSON objects which contain other smaller objects.

Using the json_serializable: ^2.0.0 and

Answer 1

The constructor's argument shouldn't be optional

User({this.firstName, this.lastName, this.dateOfBirth});

They should be obligatory:

User(this.firstName, this.lastName, this.dateOfBirth);

And the part

'user.g.dart';

should be matching the Uppercase User class:

part 'User.g.dart';