Random String Generator

randomString

// Note: Note cryptographically secure. 
function randomString(size = 5) {
    const stringArray = [...Math.random().toString()].slice(2, 2 + size);
    const intArray = stringArray.map(string => parseInt(string, 10));
    let chars = intArray.reduce((acc, c, idx) => {
        const charPos = [65,97];
        let charStart = charPos[c%2];
        const charOffset = Math.ceil(Math.random() * 10)%3;
        charStart = (charOffset * 8) + charStart;
        return String.fromCharCode(c + charStart) + acc;
    },[]);

    if (chars.length < size) {
        chars = chars + randomString(size - chars.length);
    }
    return chars;
}