Add microbenchmark

bench/snippets/array-sort.mjs

@@ -0,0 +1,24 @@
+import { bench, run } from "./runner.mjs";
+var comparator = (a, b) => a - b;
+
+const numbers = [
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16,
+  32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51,
+  50, 49, 48.9,
+];
+
+const presorted = numbers.slice().sort(comparator);
+
+bench(`Array.sort (${numbers.length} num, unsorted)`, () => {
+  [
+    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17,
+    16, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52,
+    51, 50, 49, 48.9,
+  ].sort(comparator);
+});
+
+bench(`Array.sort (${numbers.length} num, pre-sorted)`, () => {
+  presorted.sort(comparator);
+});
+
+run();