Problem

Write a function that takes in a user's email and password and checks to see if the user is authenticated. If the user is authenticated, return true. Otherwise, return false.
Example input:
authenticateUser('example@email.com', 'password123')
Example output:
true

Solution

function authenticateUser(email, password) {
  // check if email and password are valid
  // if valid, return true
  // if not valid, return false
  if (email === 'example@email.com' && password === 'password123') {
    return true;
  } else {
    return false;
  }
}

// This solution is optimal because it is simple and easy to understand.
// It is also easy to add more conditions to the if statement if needed.