From 45ef3eb2becc663e756a3da557df5a03fb40fd84 Mon Sep 17 00:00:00 2001
From: Boshen <1430279+Boshen@users.noreply.github.com>
Date: Tue, 26 Nov 2024 06:10:35 +0000
Subject: [PATCH] chore(transformer): disable class properties transform from
 the target API (#7487)

---
 crates/oxc_transformer/src/options/mod.rs              | 4 +++-
 crates/oxc_transformer/tests/integrations/es_target.rs | 7 +++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/crates/oxc_transformer/src/options/mod.rs b/crates/oxc_transformer/src/options/mod.rs
index 076fcdb4f441d..aa2963c035d49 100644
--- a/crates/oxc_transformer/src/options/mod.rs
+++ b/crates/oxc_transformer/src/options/mod.rs
@@ -122,7 +122,9 @@ impl From<ESTarget> for TransformOptions {
     fn from(target: ESTarget) -> Self {
         let mut engine_targets = EngineTargets::default();
         engine_targets.insert(Engine::Es, target.version());
-        Self { env: EnvOptions::from(engine_targets), ..Self::default() }
+        let mut env = EnvOptions::from(engine_targets);
+        env.es2022.class_properties = None;
+        Self { env, ..Self::default() }
     }
 }
 
diff --git a/crates/oxc_transformer/tests/integrations/es_target.rs b/crates/oxc_transformer/tests/integrations/es_target.rs
index 29cf0d1aa5726..2463ed0ff4741 100644
--- a/crates/oxc_transformer/tests/integrations/es_target.rs
+++ b/crates/oxc_transformer/tests/integrations/es_target.rs
@@ -51,6 +51,13 @@ fn es_target() {
     }
 }
 
+#[test]
+fn no_class_properties() {
+    let code = "class Foo { #a; }";
+    let options = TransformOptions::from(ESTarget::from_str("es2015").unwrap());
+    assert_eq!(test(code, &options), Ok(codegen(code, SourceType::mjs())));
+}
+
 #[test]
 fn target_list_pass() {
     // https://vite.dev/config/build-options.html#build-target