I created an interface called IMenu:
interface IMenu {
name: string;
url: string;
}
Then, I implemented this interface in a class named Menu:
class Menu implements IMenu {
public name;
public url;
}
Since the properties in the interface are always public, is it feasible to change them to protected or private in the class that implements the interface?
Unfortunately, accomplishing this task is impossible. In order to implement interfaces, they must be made public in most cases (with some exceptions in certain languages, like C# which allows a degree of hiding with explicit interface implementations, but even then the implemented properties can still be accessed from outside the class).
interface IMenu {
title: string;
link: string;
}
class Navigation implements IMenu {
private _title: string;
private _link: string;
constructor() {
_title = "Home";
_link = "/home";
}
get title(){
// implementation for accessing title
}
set title(value){
// implementation for setting title
}
}
By implementing Getter and Setter methods, you can make a public variable from an interface's private or protected properties within a class.
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