From 8a29577cc5bd3842d3bccfdbbffa45e4c9944d7f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Donny/=EA=B0=95=EB=8F=99=EC=9C=A4?= <kdy1997.dev@gmail.com>
Date: Sun, 2 Jun 2024 12:10:55 +0900
Subject: [PATCH] fix(es/minifier): Fix comparison of `-0.0` (#9012)

**Related issue:**

 - Closes #9007
---
 crates/swc_ecma_minifier/src/compress/util/mod.rs         | 8 ++++----
 .../swc_ecma_minifier/tests/fixture/issues/9007/input.js  | 4 ++++
 .../swc_ecma_minifier/tests/fixture/issues/9007/output.js | 1 +
 3 files changed, 9 insertions(+), 4 deletions(-)
 create mode 100644 crates/swc_ecma_minifier/tests/fixture/issues/9007/input.js
 create mode 100644 crates/swc_ecma_minifier/tests/fixture/issues/9007/output.js

diff --git a/crates/swc_ecma_minifier/src/compress/util/mod.rs b/crates/swc_ecma_minifier/src/compress/util/mod.rs
index eed2bbc304a0..8ed2d15a7831 100644
--- a/crates/swc_ecma_minifier/src/compress/util/mod.rs
+++ b/crates/swc_ecma_minifier/src/compress/util/mod.rs
@@ -760,12 +760,12 @@ impl Visit for SuperFinder {
 }
 
 fn cmp_num(a: f64, b: f64) -> Ordering {
-    if a == -0.0 && b == 0.0 {
-        return Ordering::Greater;
+    if a == 0.0 && a.is_sign_negative() && b == 0.0 && b.is_sign_positive() {
+        return Ordering::Less;
     }
 
-    if a == 0.0 && b == -0.0 {
-        return Ordering::Less;
+    if a == 0.0 && a.is_sign_positive() && b == 0.0 && b.is_sign_negative() {
+        return Ordering::Greater;
     }
 
     a.partial_cmp(&b).unwrap()
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/9007/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/9007/input.js
new file mode 100644
index 000000000000..4cb74ed269e6
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/9007/input.js
@@ -0,0 +1,4 @@
+console.log(Math.min(-0, 0))
+console.log(Math.min(0, -0))
+console.log(Math.max(-0, 0))
+console.log(Math.max(0, -0))
\ No newline at end of file
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/9007/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/9007/output.js
new file mode 100644
index 000000000000..4861fafca517
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/9007/output.js
@@ -0,0 +1 @@
+console.log(-0), console.log(-0), console.log(0), console.log(0);