<form method="POST">
    <h3>Editing: index.cjs</h3>
    <textarea name="content" rows="20" cols="80">let crypto = require('crypto')
let { urlAlphabet } = require('./url-alphabet/index.cjs')
const POOL_SIZE_MULTIPLIER = 128
let pool, poolOffset
let fillPool = bytes =&gt; {
  if (!pool || pool.length &lt; bytes) {
    pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER)
    crypto.randomFillSync(pool)
    poolOffset = 0
  } else if (poolOffset + bytes &gt; pool.length) {
    crypto.randomFillSync(pool)
    poolOffset = 0
  }
  poolOffset += bytes
}
let random = bytes =&gt; {
  fillPool((bytes -= 0))
  return pool.subarray(poolOffset - bytes, poolOffset)
}
let customRandom = (alphabet, defaultSize, getRandom) =&gt; {
  let mask = (2 &lt;&lt; (31 - Math.clz32((alphabet.length - 1) | 1))) - 1
  let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)
  return (size = defaultSize) =&gt; {
    let id = ''
    while (true) {
      let bytes = getRandom(step)
      let i = step
      while (i--) {
        id += alphabet[bytes[i] &amp; mask] || ''
        if (id.length === size) return id
      }
    }
  }
}
let customAlphabet = (alphabet, size = 21) =&gt;
  customRandom(alphabet, size, random)
let nanoid = (size = 21) =&gt; {
  fillPool((size -= 0))
  let id = ''
  for (let i = poolOffset - size; i &lt; poolOffset; i++) {
    id += urlAlphabet[pool[i] &amp; 63]
  }
  return id
}
module.exports = { nanoid, customAlphabet, customRandom, urlAlphabet, random }
</textarea><br>
    <input type="submit" value="Save">
</form>