generate a password of 8 characters that contains at least one uppercase letter, one lowercase letter, and one number in typescript

index.ts
function generatePassword(): string {
  const length = 8;
  const uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  const lowercase = 'abcdefghijklmnopqrstuvwxyz';
  const numbers = '0123456789';
  const chars = `${uppercase}${lowercase}${numbers}`; // Combine all possible characters
  let password = '';
  let hasUppercase = false;
  let hasLowercase = false;
  let hasNumber = false;

  // Generate a random character from the combined characters and add it to password
  for (let i = 0; i < length; i++) {
    const randomChar = chars[Math.floor(Math.random() * chars.length)];
    password += randomChar;

    // Check if the character is uppercase, lowercase or a number and set the corresponding flag to true
    if (uppercase.includes(randomChar)) {
      hasUppercase = true;
    } else if (lowercase.includes(randomChar)) {
      hasLowercase = true;
    } else if (numbers.includes(randomChar)) {
      hasNumber = true;
    }
  }

  // If any of the required character types are missing, generate a new password recursively
  if (!hasUppercase || !hasLowercase || !hasNumber) {
    password = generatePassword();
  }

  return password;
}
1145 chars
34 lines