Function parseArgs

benchmarks/javascript/benchmark.js:51–95

(argv)

let blackhole = 0;

function parseArgs(argv) {
  const options = {
    data: "",
    serializer: "",
    durationSeconds: DEFAULT_DURATION_SECONDS,
    output: path.join(__dirname, "benchmark_results.json"),
  };
  for (let i = 0; i < argv.length; i += 1) {
    const arg = argv[i];
    switch (arg) {
      case "--data":
        options.data = String(argv[++i] || "");
        break;
      case "--serializer":
        options.serializer = String(argv[++i] || "");
        break;
      case "--duration":
        options.durationSeconds = Number(argv[++i] || DEFAULT_DURATION_SECONDS);
        break;
      case "--output":
      case "--benchmark_out":
        options.output = path.resolve(String(argv[++i] || options.output));
        break;
      case "--help":
      case "-h":
        printUsage();
        process.exit(0);
        break;
      default:
        throw new Error(`Unknown option: ${arg}`);
    }
  }
  if (!Number.isFinite(options.durationSeconds) || options.durationSeconds <= 0) {
    throw new Error(`duration must be a positive number, got ${options.durationSeconds}`);
  }
  if (options.data && !DATA_ORDER.includes(options.data.toLowerCase())) {
    throw new Error(`Unknown data type: ${options.data}`);
  }
  if (options.serializer && !SERIALIZER_ORDER.includes(options.serializer.toLowerCase())) {
    throw new Error(`Unknown serializer: ${options.serializer}`);
  }
  options.data = options.data.toLowerCase();
  options.serializer = options.serializer.toLowerCase();
  return options;
}

function printUsage() {
  console.log(`Usage: node benchmark.js [OPTIONS]