Function addBenchmarkResults

scripts/bench/stats.js:43–94

(table, localResults, remoteMasterResults)

}

function addBenchmarkResults(table, localResults, remoteMasterResults) {
  const benchmarks = Object.keys(
    (localResults && localResults.benchmarks) ||
      (remoteMasterResults && remoteMasterResults.benchmarks)
  );
  benchmarks.forEach(benchmark => {
    const rowHeader = [chalk.white.bold(benchmark)];
    if (remoteMasterResults) {
      rowHeader.push(chalk.white.bold('Time'));
    }
    if (localResults) {
      rowHeader.push(chalk.white.bold('Time'));
    }
    if (localResults && remoteMasterResults) {
      rowHeader.push(chalk.white.bold('Diff'));
    }
    table.push(rowHeader);

    const measurements =
      (localResults && localResults.benchmarks[benchmark].averages) ||
      (remoteMasterResults &&
        remoteMasterResults.benchmarks[benchmark].averages);
    measurements.forEach((measurement, i) => {
      const row = [chalk.gray(measurement.entry)];
      let remoteMean;
      let remoteSem;
      if (remoteMasterResults) {
        remoteMean = remoteMasterResults.benchmarks[benchmark].averages[i].mean;
        remoteSem = remoteMasterResults.benchmarks[benchmark].averages[i].sem;
        // https://en.wikipedia.org/wiki/1.96 gives a 99% confidence interval.
        const ci95 = remoteSem * 1.96;
        row.push(
          chalk.white(+remoteMean.toFixed(2) + ' ms +- ' + ci95.toFixed(2))
        );
      }
      let localMean;
      let localSem;
      if (localResults) {
        localMean = localResults.benchmarks[benchmark].averages[i].mean;
        localSem = localResults.benchmarks[benchmark].averages[i].sem;
        const ci95 = localSem * 1.96;
        row.push(
          chalk.white(+localMean.toFixed(2) + ' ms +- ' + ci95.toFixed(2))
        );
      }
      if (localResults && remoteMasterResults) {
        row.push(percentChange(remoteMean, localMean, remoteSem, localSem));
      }
      table.push(row);
    });
  });
}

function printResults(localResults, remoteMasterResults) {
  const head = [''];