From 8b7bea162449877be637dea44caa256928be0b19 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Mon, 12 May 2025 14:19:47 -0400
Subject: [PATCH] chore: better `bench:compare` script (#15894)

* chore: make bench:compare results more legible

* fix

* fix

* fix
---
 benchmarking/compare/index.js | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/benchmarking/compare/index.js b/benchmarking/compare/index.js
index 9d8d279c35..8f38686a29 100644
--- a/benchmarking/compare/index.js
+++ b/benchmarking/compare/index.js
@@ -67,19 +67,29 @@ for (let i = 0; i < results[0].length; i += 1) {
 	for (const metric of ['time', 'gc_time']) {
 		const times = results.map((result) => +result[i][metric]);
 		let min = Infinity;
+		let max = -Infinity;
 		let min_index = -1;
 
 		for (let b = 0; b < times.length; b += 1) {
-			if (times[b] < min) {
-				min = times[b];
+			const time = times[b];
+
+			if (time < min) {
+				min = time;
 				min_index = b;
 			}
+
+			if (time > max) {
+				max = time;
+			}
 		}
 
 		if (min !== 0) {
-			console.group(`${metric}: fastest is ${branches[min_index]}`);
+			console.group(`${metric}: fastest is ${char(min_index)} (${branches[min_index]})`);
 			times.forEach((time, b) => {
-				console.log(`${branches[b]}: ${time.toFixed(2)}ms (${((time / min) * 100).toFixed(2)}%)`);
+				const SIZE = 20;
+				const n = Math.round(SIZE * (time / max));
+
+				console.log(`${char(b)}: ${'◼'.repeat(n)}${' '.repeat(SIZE - n)} ${time.toFixed(2)}ms`);
 			});
 			console.groupEnd();
 		}
@@ -87,3 +97,7 @@ for (let i = 0; i < results[0].length; i += 1) {
 
 	console.groupEnd();
 }
+
+function char(i) {
+	return String.fromCharCode(97 + i);
+}