How is data conversion to JSON format carried out in your application?

In Flutter, the dart:convert library is commonly used to convert data to JSON format. The model object is first converted into a Map using the toJson() method, and then serialized into a JSON string using the jsonEncode() function.

Example:

import 'dart:convert';

class User {
  String name;
  int age;

  User(this.name, this.age);

  Map<String, dynamic> toJson() => {
    'name': name,
    'age': age,
  };
}

void main() {
  User user = User('Alice', 30);
  String jsonString = jsonEncode(user.toJson());
  print(jsonString); // {"name":"Alice","age":30}
}