源码快照 @ 2026-09-02 (source-only, 剔除非源码素材)

evals/packages/timeline/test/timeline.test.ts

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+import assert from "node:assert/strict";
+import test from "node:test";
+import { formatTimeline, resetTimeline, startSpan, timed, timeline, timelineTotals } from "../src/index.ts";
+
+test("timed records a span even when the operation throws", async () => {
+  resetTimeline();
+  await assert.rejects(() => timed("boom", async () => { throw new Error("nope"); }));
+  const spans = timeline();
+  assert.equal(spans.length, 1);
+  assert.equal(spans[0]?.label, "boom");
+});
+
+test("totals aggregate by label, slowest first", async () => {
+  resetTimeline();
+  startSpan("fast")();
+  const slow = startSpan("slow");
+  await new Promise((resolve) => setTimeout(resolve, 25));
+  slow();
+  startSpan("slow")();
+  const totals = timelineTotals();
+  assert.equal(totals[0]?.label, "slow");
+  assert.equal(totals[0]?.calls, 2);
+  // Timers can fire a millisecond early, so assert ordering and that time was
+  // recorded — not an exact threshold.
+  assert.ok(totals[0]!.totalMs > 0, JSON.stringify(totals));
+  assert.ok(totals[0]!.totalMs >= (totals[1]?.totalMs ?? 0), JSON.stringify(totals));
+  assert.match(formatTimeline(), /slow/);
+});