From ffa4e03d0868efdb1bc741563f194e7517834fa4 Mon Sep 17 00:00:00 2001
From: SukkaW <isukkaw@gmail.com>
Date: Sat, 18 Jan 2025 01:35:25 +0800
Subject: [PATCH] Perf: make `fileEqual` faster

---
 Build/lib/rules/base.ts | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/Build/lib/rules/base.ts b/Build/lib/rules/base.ts
index d2e66050..1f74712a 100644
--- a/Build/lib/rules/base.ts
+++ b/Build/lib/rules/base.ts
@@ -401,6 +401,10 @@ export async function fileEqual(linesA: string[], source: AsyncIterable<string>
     const firstCharA = lineA.charCodeAt(0);
     const firstCharB = lineB.charCodeAt(0);
 
+    if (firstCharA !== firstCharB) {
+      return false;
+    }
+
     if (firstCharA === 35 /* # */ && firstCharB === 35 /* # */) {
       continue;
     }
@@ -410,13 +414,9 @@ export async function fileEqual(linesA: string[], source: AsyncIterable<string>
     }
 
     if (
-      firstCharA === 47 /* / */
-      && firstCharB === 47 /* / */
-
-      && lineA[1] === '/'
-      && lineB[1] === '/'
-      && lineA[3] === '#'
-      && lineB[3] === '#'
+      firstCharA === 47 /* / */ && firstCharB === 47 /* / */
+      && lineA[1] === '/' && lineB[1] === '/'
+      && lineA[3] === '#' && lineB[3] === '#'
     ) {
       continue;
     }