gen-base32-id.js

gen-base32-id.js

function genBase32Id() {
  // Math.pow(2, 40): 1099511627776
  const x = Math.floor(Math.random() * 1099511627776).toString(32) // 40 bits
  // padding
  switch (x.length) {
    case 8:
      return x
    case 7:
      return "0" + x
    case 6:
      return "00" + x
    case 5:
      return "000" + x
    case 4:
      return "0000" + x
    case 3:
      return "00000" + x
    case 2:
      return "000000" + x
    case 1:
      return "0000000" + x
  }
  throw new Error()
}