pro32.ts

/*Checking Usernames: Do the following to create a program that simulates how websites ensure that everyone
 has a unique username.

• Make a list of five or more usernames called current_users.

• Make another list of five usernames called new_users.
 Make sure one or two of the new usernames are also in the current_users list.

• Loop through the new_users list to see if each new username has already been used.
 If it has, print a message that the person will need to enter a new username.
  If a username has not been used, print a message saying that the username is available.

• Make sure your comparison is case insensitive. If 'John' has been used, 'JOHN' should not be accepted.
*/

let current_users: string[] = ["Mohid", "Rabia", "Taha", "Ubaid", "Bisma"];
let new_users:string[]= ["mohiD", "Rabia", "Kashaf", "Ibrahim", "Zaheer"];

new_users.forEach(n_names => {
   let lowerName = n_names.toLowerCase();
    if (current_users.map(c_names => c_names.toLowerCase()).includes(lowerName)) {
        console.log(`The username "${n_names}" is already taken. Try a different one`);
        
    }else{
        console.log(`The username "${n_names}" is available`)
    }
});