From 013e0530c5ecf79c7f33f09749c39eb0091ac9ff Mon Sep 17 00:00:00 2001
From: Boshen <1430279+Boshen@users.noreply.github.com>
Date: Tue, 30 Sep 2025 15:58:31 +0000
Subject: [PATCH] fix(napi/transform): fix define plugin not applying DCE
 correctly (#14264)

DCE options was using "smallest", hence `debugger` was removed.

fixes 14260
---
 crates/oxc/src/compiler.rs            |  2 +-
 napi/transform/test/transform.test.ts | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/crates/oxc/src/compiler.rs b/crates/oxc/src/compiler.rs
index 2d45c68666c23..72b0dce487c5a 100644
--- a/crates/oxc/src/compiler.rs
+++ b/crates/oxc/src/compiler.rs
@@ -198,7 +198,7 @@ pub trait CompilerInterface {
                 Compressor::new(&allocator).dead_code_elimination_with_scoping(
                     &mut program,
                     scoping,
-                    CompressOptions::smallest(),
+                    CompressOptions::dce(),
                 );
             }
         }
diff --git a/napi/transform/test/transform.test.ts b/napi/transform/test/transform.test.ts
index 8dfd636800b4c..00b07aee9a226 100644
--- a/napi/transform/test/transform.test.ts
+++ b/napi/transform/test/transform.test.ts
@@ -290,6 +290,16 @@ describe('define plugin', () => {
     // Replaced `undefined` with `void 0` by DCE.
     expect(ret.code).toEqual('new (void 0)();\n');
   });
+
+  it('keeps debugger', () => {
+    const code = 'Foo; debugger;';
+    const ret = transform('test.js', code, {
+      define: {
+        Foo: 'Bar',
+      },
+    });
+    expect(ret.code).toEqual('Bar;\ndebugger;\n');
+  });
 });
 
 describe('inject plugin', () => {