Law Of Demeter.js

class Me {
	constructor(userName, friend) {
		this.userName = userName;
		this.friend = friend;
	}

	getName() {
		console.log(`This is ${this.userName}`);
	}

	getFriend() {
		console.log(this.friend);
	}
}

class Friend {
	constructor(friendName, otherFriend) {
		this.friendName = friendName;
		this.otherFriend = otherFriend;
	}

	static logFriendName() {
		console.log(this.friendName);
	}

	logOtherFriend() {
		console.log(this.otherFriend);
	}
}

class OtherFriend {
	constructor(otherFriendName) {
		this.otherFriendName = otherFriendName;
	}

	logOtherFriendName() {
		console.log(this.otherFriendName);
	}
}

const me = new Me("Me", new Friend("Friend", new OtherFriend("Other Friend")));
me.getFriend(); // returns: Friend {friendName: 'Friend', otherFriend: OtherFriend { otherFriendName: 'Other Friend' } }