pids.js

console.clear()
const Pid = (function(){
  // UUID generator
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  // Big Number library
  /* bignumber.js v6.0.0 https://github.com/MikeMcl/bignumber.js/LICENCE */
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",d=1e14,m=14,w=9007199254740991,v=[1,10,100,1e3,1e4,1e5,1e6,1e7,1e8,1e9,1e10,1e11,1e12,1e13],N=1e7,O=1e9;c=r(),c["default"]=c.BigNumber=c,"function"==typeof define&&define.amd?define(function(){return c}):"undefined"!=typeof module&&module.exports?module.exports=c:(e||(e="undefined"!=typeof self?self:Function("return this")()),e.BigNumber=c)}(this);
  
  const newUuidV4 = uuid.v4
  const UUID_BASE16 = 16
  const PID_BASE36 = 36
  const SYMBOLS = '0123456789abcdefghijklmnopqrstuvwxyz'
  const RE_UUID_NO_HYPHEN = /^([a-f0-9]{8})([a-f0-9]{4})([a-f0-9]{4})([a-f0-9]{4})([a-f0-9]{12})$/
  const RE_UUID_WITH_HYPHEN = '$1-$2-$3-$4-$5'
  
  const create = (uuid = '') => {
    if(uuid === '') uuid = newUuidV4()
    uuid = uuid.replace(/-/g, '').toLowerCase()
    let pid = baseToBase(uuid, UUID_BASE16, PID_BASE36)
    return '' + pid.padStart(25, '0')
  }
  
  const toUuid = (pid) => {
    let uuid = baseToBase(pid, PID_BASE36, UUID_BASE16)
    uuid = uuid.padStart(32, '0')
    return '' + uuid.replace(RE_UUID_NO_HYPHEN, RE_UUID_WITH_HYPHEN)
  }
  
  const baseToBase = (digits, fromBase, toBase) => {
    return valueToForm(formToValue(digits, fromBase), toBase);
  }
  
  const valueToForm = (value, base) => {
    if(!(value instanceof BigNumber)) value = BigNumber(value)
    let digits = ''
    while(value.comparedTo(0) > 0) {
      const quotient = value.idiv(base)
      const remainder = value.mod(base)
      digits = SYMBOLS[remainder] + digits
      value = quotient
    }
    return digits
  }
  
  const formToValue = (digits, base) => {
    if(base > PID_BASE36) {
      throw new Error(`Base '${base}' exceeds maximum '${PID_BASE36}'.`)
    }
    const subset = SYMBOLS.substr(0, base)
    let value = BigNumber(0)
    for(let c of digits){
      const index = subset.indexOf(c)
      if(index === -1){
        throw new Error(`Invalid digit '${c}', not found in '${base}' digits '${subset}'.`)
      }
      value = value.times(base).plus(index)
    }
    return value
  }
  
  return { create, toUuid }
})()

const testCases = [
    'ffffffff-ffff-ffff-ffff-ffffffffffff',
    '00000000-0000-0000-0000-000000000000',
    '528f4e50-1f26-4067-8c9d-8475a0da3e16',
    '275c7d5b-ec7b-4a04-afe0-00e7602747e2',
    'e84d040d-5260-4646-bda3-56161f62525e',
    '52cf29d6-2b61-4c9d-abaf-9d1e7d676acd',
    'f0f64bda-9afe-4443-a0aa-a74298a1e4d1',
    'a20a37aa-6a2d-47b3-ad77-56a289e52a8a',
    'd927d185-2214-4782-8699-6abb136880af',
    '1e17729d-3fdd-4bec-8562-d514da77cff5'
];

const out = document.querySelector('#out')
const log = (...items) => {
  out.textContent += items.join(' ') + '\n'
}
const clear = () => {
  out.textContent = '';
}

log('Testing...')
log('==========')
let passed = 0
let failed = 0
for(let test of testCases){
  let pid = Pid.create(test)
  let uuid = Pid.toUuid(pid)
  //log(test, pid, uuid)
  result = 'PASS'
  if(test !== uuid){
    result = `FAIL — ${test} !== ${uuid}.`
  }
  if(pid.length !== 25){
    result = `FAIL - `
  }
  if(uuid.length !== 36){
    result = `FAIL — `
  }
  log(`${result}:`, test, '->', pid, '->', uuid)
  if(result === 'PASS') passed++
  else failed++
}
log('----------')
log(' Total: ' + (passed + failed))
log('Passed: ' + passed)
log('Failed: ' + failed)
log('\n\n')