The readonly modifier in TypeScript

With the readonly modifier, properties can be made read-only. Let's look at an example. Let's make the User class property name read-only:

typescriptclass User {
  readonly name: string;
  
  constructor(name: string) {
    this.name = name;
  }
}

Let's create an object of the class, assigning some value to the name:

typescriptlet user: User = new User('john');

Let's read the meaning of the name:

typescriptconsole.log(user.name); // 'john'

But trying to write a different value to the property will result in an error:

typescriptuser.name = 'eric'; //