From 0d56de75ad65e68d8b748ca3bfe1897becd4e3ed Mon Sep 17 00:00:00 2001
From: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
Date: Fri, 28 Feb 2025 16:09:36 +0900
Subject: [PATCH] feat(minifier): improve unary expression handling in
 `remove_unused_expression`

---
 .../src/peephole/remove_unused_expression.rs           | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/crates/oxc_minifier/src/peephole/remove_unused_expression.rs b/crates/oxc_minifier/src/peephole/remove_unused_expression.rs
index c2ee7ad7b3817..bf6442a373e67 100644
--- a/crates/oxc_minifier/src/peephole/remove_unused_expression.rs
+++ b/crates/oxc_minifier/src/peephole/remove_unused_expression.rs
@@ -49,7 +49,7 @@ impl<'a> PeepholeOptimizations {
                     self.remove_unused_expression(e, ctx)
                 }
             }
-            _ => false,
+            _ => !e.may_have_side_effects(&ctx),
         }
     }
 
@@ -406,7 +406,15 @@ mod test {
         test_same("delete x");
         test_same("delete x.y");
         test_same("delete x.y.z()");
+
+        test("+0", "");
         test_same("+0n"); // Uncaught TypeError: Cannot convert a BigInt value to a number
+
+        test("-0", "");
+        test_same("-Symbol()"); // throws an error
+
+        test("~0", "");
+        test_same("~Symbol()"); // throws an error
     }
 
     #[test]