Random id, token, uuid generator (or whatever you want to call it)

token.ts

/**
 * Prouces a random token like token(5) = 1a4c9
 * @param n {number} The length of the token
 * @returns {string}
 */
const token = (n: number) =>
  String.fromCharCode(
    ...new Array(n)
      .fill(0)
      .map(
        (_n, i) => [48, 97][i % 2] + Math.floor(Math.random() * [10, 25][i % 2])
      )
  );