From f81fa6e06335745ff6ab5f7956cecc38116b1343 Mon Sep 17 00:00:00 2001
From: CPunisher <1343316114@qq.com>
Date: Thu, 11 Jul 2024 22:29:51 +0800
Subject: [PATCH] fix(es/minifier): Fix case matching (#9208)

**Description:**

Caused by https://github.com/swc-project/swc/pull/7112
Since swc minifier evaluates expressions in a separate pass, I make a temporary patch here.

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/9176
---
 .../src/compress/optimize/switches.rs                  |  7 ++++++-
 .../tests/fixture/issues/9176/input.js                 | 10 ++++++++++
 .../tests/fixture/issues/9176/output.js                |  2 ++
 3 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 crates/swc_ecma_minifier/tests/fixture/issues/9176/input.js
 create mode 100644 crates/swc_ecma_minifier/tests/fixture/issues/9176/output.js

diff --git a/crates/swc_ecma_minifier/src/compress/optimize/switches.rs b/crates/swc_ecma_minifier/src/compress/optimize/switches.rs
index f3730f2e84de..0e5791f89467 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/switches.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/switches.rs
@@ -44,7 +44,12 @@ impl Optimizer<'_> {
         for (idx, case) in stmt.cases.iter_mut().enumerate() {
             if let Some(test) = case.test.as_ref() {
                 if let Some(e) = is_primitive(&self.expr_ctx, tail_expr(test)) {
-                    if e.eq_ignore_span(tail) {
+                    if match (e, tail) {
+                        (Expr::Lit(Lit::Num(e)), Expr::Lit(Lit::Num(tail))) => {
+                            e.value == tail.value
+                        }
+                        _ => e.eq_ignore_span(tail),
+                    } {
                         cases.push(case.take());
 
                         exact = Some(idx);
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/9176/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/9176/input.js
new file mode 100644
index 000000000000..5516a3c5436c
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/9176/input.js
@@ -0,0 +1,10 @@
+"use strict";
+const k = (function () {
+    switch (-0) {
+        case 0:
+            console.log("hi");
+            break;
+        default:
+            throw 0;
+    }
+})();
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/9176/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/9176/output.js
new file mode 100644
index 000000000000..5724c24c8e53
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/9176/output.js
@@ -0,0 +1,2 @@
+"use strict";
+console.log("hi");