Twiller (Keep list / map outside of class)

gistfile1.txt

class User {
    constructor(userId, fullName, phone, age) {
        this.userId = userId;
        this.fullName = fullName;
        this.phone = phone;
        this.age = age;
    }
}

class Follow {
    constructor(followee, follower) {
        this.followee = followee;
        this.follower = follower;
    }
}

class Tweet {
    constructor(userId, post) {
        this.userId = userId;
        this.post = post;
    }
}


const users = [];
const follows = [];
const tweets = [];

// Register users
const user1 = new User('u1', 'John Doe', '123-456-7890', 30);
const user2 = new User('u2', 'Jane Smith', '987-654-3210', 25);
users.push(user1, user2);

// Add follow relationships
const follow1 = new Follow('u2', 'u1'); 
follows.push(follow1);

// Add tweets
const tweet1 = new Tweet('u1', 'Hello world!');
const tweet2 = new Tweet('u2', 'Good morning!'); 
tweets.push(tweet1, tweet2);

// Get followee tweets for a  user
function getFolloweeTweets(userId) {
    const followeeList = follows
        .filter(follow => follow.follower === userId)
        .map(follow => follow.followee);
    return tweets.filter(tweet => followeeList.includes(tweet.userId));
}


const followeeTweets = getFolloweeTweets('u1');
console.log(followeeTweets); // Should show Jane's tweet