[
  {
    "id": "M1",
    "old": "      if (await listening(port) && daemon.exitCode === null && daemon.signalCode === null &&\n          readFileSync(lastLog, 'utf8').split('\\n').some(line =>\n            (line === `Server listening on 127.0.0.1 port ${port}.` ||\n             line === `Server listening on 127.0.0.1 port ${port}.\\r`))) return port;",
    "new": "      if (await listening(port)) return port;",
    "pattern": "row 280: an occupied TCP port"
  },
  {
    "id": "M2",
    "old": "export function pickPort(rand = Math.random) {\n  const [lo, hi] = ephemeralRange();\n  const below = Math.max(0, Math.min(lo, 65536) - 1024);\n  const above = Math.max(0, 65535 - Math.max(hi, 1023));\n  const sample = rand();\n  if (!below && !above) throw Error('no scratch sshd port available');\n  if (!(sample >= 0 && sample < 1)) throw Error('invalid random sample');\n  const offset = Math.floor(sample * (below + above));\n  return offset < below ? 1024 + offset : Math.max(hi + 1, 1024) + offset - below;\n}\n",
    "new": "export function pickPort(rand = Math.random) {\n  return 20000 + Math.floor(rand() * 20000);\n}\n",
    "pattern": "row 280: every injected picker sample"
  }
]