test: stabilize prefix-source getPrefix() and original() cases (#207)

alexander-akait · web-flow · commit fdb229eca423 · 2026-04-22T20:19:22.000+03:00
diff --git a/benchmark/cases/prefix-source/index.bench.mjs b/benchmark/cases/prefix-source/index.bench.mjs
@@ -29,15 +29,19 @@ export default function register(bench) {
 
 	bench.add("prefix-source: getPrefix()", () => {
 		const ps = new sources.PrefixSource("\t", fixtureCode);
-		for (let i = 0; i < 500; i++) ps.getPrefix();
+		let sink = 0;
+		for (let i = 0; i < 50_000; i++) sink ^= ps.getPrefix().length;
+		if (sink === -1) throw new Error("unreachable");
 	});
 
 	bench.add("prefix-source: original()", () => {
 		const ps = new sources.PrefixSource(
 			"\t",
 			new sources.RawSource(fixtureCode),
 		);
-		for (let i = 0; i < 500; i++) ps.original();
+		let sink = 0;
+		for (let i = 0; i < 50_000; i++) sink ^= ps.original() === ps ? 1 : 0;
+		if (sink === -1) throw new Error("unreachable");
 	});
 
 	bench.add("prefix-source: source() (RawSource child)", () => {
