Make 30-char typed object ID

mkid

#!/usr/bin/env node
//
// mkid - Make Object ID
//
// Usage: mkid [type|""]
//  type: 3-char type
//
// Requires global NPM modules:
//
//   uuid^8.3.2
//   uuid-encoder^1.2.0
//
// Author: Erhhung Yuan <erhhung.yuan@intel.com>

const path        = require('path');
const uuid        = require('uuid').v4();
const UuidEncoder = require('uuid-encoder');
const uuidEncoder = new UuidEncoder('base32');

const [, bin, type] = process.argv;
if (type === undefined) {
  console.log(`Usage: ${path.basename(bin)} [type|""]`);
  console.log(' type: 3-char type');
  process.exit();
}
if (type && !/^[a-z\d]{3}$/.test(type)) {
  console.error('Invalid type!');
  process.exit(1);
}

let id = uuidEncoder.encode(uuid);
if (id.length < 26) {
  id += id.slice(0, 26-id.length);
}
if (type) {
  id += `.${type}`;
}
console.log(id);