benchmark: add `util.toUSVString()`'s benchmark

PR-URL: https://github.com/nodejs/node/pull/40203
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/benchmark/util/to-usv-string.js b/benchmark/util/to-usv-string.js
new file mode 100644
index 0000000000..22d23d3198
--- /dev/null
+++ b/benchmark/util/to-usv-string.js
@@ -0,0 +1,21 @@
+'use strict';
+
+const common = require('../common');
+
+const BASE = 'string\ud801';
+
+const bench = common.createBenchmark(main, {
+  n: [1e5],
+  size: [10, 100, 500],
+});
+
+function main({ n, size }) {
+  const { toUSVString } = require('util');
+  const str = BASE.repeat(size);
+
+  bench.start();
+  for (let i = 0; i < n; i++) {
+    toUSVString(str);
+  }
+  bench.end(n);
+}