generate-passwords/src/index.js

Generate passwords with ease.

function generatePassword(options = {}) {

    if (!options.length) throw new TypeError("Couldn't generate your Password! You must specify the length of your password (length: 100).")

    if (!options.symbols && !options.numbers && !options.letters) throw new TypeError("Couldn't generate your Password! You must specify what characters you want your password to include (letters: true, numbers: true, symbols: true).")
    
    let password = []
    if (options.numbers) {
        if (options.numbers === true) {
            numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
            numbers.forEach(number => password.push(number))
        }
    }

    if (options.letters) {
        if (options.letters === true) {
            letters = ['a','A','b','B','c','C','d','D','e','E','f','F','g','G','h','H','i','I','j','J','f','F','l','L','m','M','n','N','o','O','p','P','q','Q','r','R','s','S','t','T','u','U','v','V','w','W','x','X','y','Y','z','Z']
            letters.forEach(letter => password.push(letter))
        }
    }

    if (options.symbols) {
        if (options.symbols === true) {
            symbols = ["'", '"', "`", '@', '$', '%', '^', '&', '.', ',', '*', '(', ')', '!', '~', '[', ']', '-', '=', '+', '_', '{', '}'];
            symbols.forEach(symbol => password.push(symbol))
        }
    }

    let output = '';

    for (let i = 0; i < options.length; i++) {
        let randomizer = Math.floor(Math.random() * password.length);
        output += password[randomizer]
    }

    if (options.upperOnly) {
        output = output.toUpperCase();
    }

    if (options.lowerOnly) {
        output = output.toLowerCase();
    }

    return output;

}

module.exports = { generatePassword }