From 11e0f3581baf2591573c485d42f5caee5ecbc9f9 Mon Sep 17 00:00:00 2001
From: Taco de Wolff <tacodewolff@gmail.com>
Date: Mon, 11 Mar 2024 21:28:06 -0300
Subject: [PATCH] JS: fix minifying strings where the last character needs to
 be escaped as we change the quotes

---
 js/js_test.go | 1 +
 js/util.go    | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/js/js_test.go b/js/js_test.go
index 3db67c6bd3..547eff4394 100644
--- a/js/js_test.go
+++ b/js/js_test.go
@@ -179,6 +179,7 @@ func TestJS(t *testing.T) {
 		{`"a"+"b"+5+"c"+"d"`, `"ab"+5+"cd"`},
 		{`"a"+"b"+5+6+"d"`, `"ab"+5+6+"d"`},
 		{"`$${foo}`", "`$${foo}`"},
+		{"'\\n\\nCheck the render method of `'", "`\n\nCheck the render method of \\``"},
 
 		// rename true, false, undefined, Infinity
 		{`x=true`, `x=!0`},
diff --git a/js/util.go b/js/util.go
index 97fb7ecf28..a674a71217 100644
--- a/js/util.go
+++ b/js/util.go
@@ -1023,7 +1023,7 @@ func replaceEscapes(b []byte, quote byte, prefix, suffix int) []byte {
 	// strip unnecessary escapes
 	j := 0
 	start := 0
-	for i := prefix; i < len(b)-suffix-1; i++ {
+	for i := prefix; i < len(b)-suffix; i++ {
 		if c := b[i]; c == '\\' {
 			c = b[i+1]
 			if c == quote || c == '\\' || quote != '`' && (c == 'n' || c == 'r') || c == '0' && (len(b)-suffix <= i+2 || b[i+2] < '0' || '7' < b[i+2]) {