Function parseArgs

scripts/daemon-memory-check.ts:70–139

Parse a small flag set without adding a runtime dependency to the memory harness.

(argv: string[])

/** Parse a small flag set without adding a runtime dependency to the memory harness. */
function parseArgs(argv: string[]): CliOptions {
  const options = { ...defaultOptions };

  for (let index = 0; index < argv.length; index += 1) {
    const arg = argv[index]!;
    if (arg === "--help" || arg === "-h") {
      console.log(
        `Usage: bun run scripts/daemon-memory-check.ts [options]\n\nOptions:\n  --cycles <n>                  Register/use/unregister cycles (default ${defaultOptions.cycles})\n  --warmup-cycles <n>           Cycles ignored for trend analysis (default ${defaultOptions.warmupCycles})\n  --sessions-per-cycle <n>      Fake websocket sessions per cycle (default ${defaultOptions.sessionsPerCycle})\n  --files-per-session <n>       Review files stored per fake session (default ${defaultOptions.filesPerSession})\n  --hunks-per-file <n>          Hunks per review file (default ${defaultOptions.hunksPerFile})\n  --lines-per-hunk <n>          Diff lines per hunk side (default ${defaultOptions.linesPerHunk})\n  --api-requests-per-cycle <n>  list/context/review requests while sessions are live (default ${defaultOptions.apiRequestsPerCycle})\n  --snapshot-updates-per-cycle <n>  Snapshot update messages per session per cycle (default ${defaultOptions.snapshotUpdatesPerCycle})\n  --settle-ms <n>               Delay before post-cleanup sampling (default ${defaultOptions.settleMs})\n  --max-rss-growth-mb <n>       Fail if post-warmup RSS grows beyond this (default ${defaultOptions.maxRssGrowthMb})\n  --max-rss-slope-kb <n>        Fail if post-warmup RSS slope exceeds this per cycle (default ${defaultOptions.maxRssSlopeKb})\n  --json-out <path>             Write full sample summary JSON\n`,
      );
      process.exit(0);
    }

    const next = () => argv[++index];
    switch (arg) {
      case "--cycles":
        options.cycles = parseNumberOption(arg, next());
        break;
      case "--warmup-cycles":
        options.warmupCycles = parseNumberOption(arg, next());
        break;
      case "--sessions-per-cycle":
        options.sessionsPerCycle = parseNumberOption(arg, next());
        break;
      case "--files-per-session":
        options.filesPerSession = parseNumberOption(arg, next());
        break;
      case "--hunks-per-file":
        options.hunksPerFile = parseNumberOption(arg, next());
        break;
      case "--lines-per-hunk":
        options.linesPerHunk = parseNumberOption(arg, next());
        break;
      case "--api-requests-per-cycle":
        options.apiRequestsPerCycle = parseNumberOption(arg, next());
        break;
      case "--snapshot-updates-per-cycle":
        options.snapshotUpdatesPerCycle = parseNumberOption(arg, next());
        break;
      case "--settle-ms":
        options.settleMs = parseNumberOption(arg, next());
        break;
      case "--max-rss-growth-mb":
        options.maxRssGrowthMb = parseNumberOption(arg, next());
        break;
      case "--max-rss-slope-kb":
        options.maxRssSlopeKb = parseNumberOption(arg, next());
        break;
      case "--json-out":
        options.jsonOut = next();
        if (!options.jsonOut) {
          throw new Error("Missing value for --json-out.");
        }
        break;
      default:
        throw new Error(`Unknown option: ${arg}`);
    }
  }