Function formatComparisonMarkdown

scripts/compare-release-benchmarks.ts:322–359

(
  comparison: BenchmarkComparisonResult,
  options: { baseLabel: string; headLabel: string },
)

/** Render a compact Markdown report suitable for GitHub Actions summaries. */
export function formatComparisonMarkdown(
  comparison: BenchmarkComparisonResult,
  options: { baseLabel: string; headLabel: string },
) {
  const failedRows = comparison.rows.filter(
    (row) => row.status === "fail" || row.status === "missing-head",
  );
  const lines = [
    "## Release benchmark gate",
    "",
    comparison.failed
      ? `❌ ${failedRows.length} material benchmark regression${failedRows.length === 1 ? "" : "s"} found.`
      : "✅ No unaccepted material benchmark regressions found.",
    "",
    `Base: \`${options.baseLabel}\`  `,
    `Head: \`${options.headLabel}\``,
    "",
    "| Status | Metric | Base median | Head median | Δ | Threshold |",
    "| --- | --- | ---: | ---: | ---: | --- |",
  ];

  for (const row of comparison.rows) {
    const unit = formatUnit(row.unit);
    const status =
      row.status === "fail" || row.status === "missing-head"
        ? "❌"
        : row.status === "accepted"
          ? "⚠️"
          : "✅";
    lines.push(
      `| ${status} ${row.status} | \`${row.name}\` | ${formatNumber(row.baseMedian)} ${unit} | ${formatNumber(
        row.headMedian,
      )} ${unit} | ${formatDeltaPercent(row.relativeDelta)} | ${formatThreshold(row.threshold, row.unit)} |`,
    );
  }

  return `${lines.join("\n")}\n`;
}

function readArgValue(args: string[], index: number) {
  const value = args[index + 1];