Don't create parameter expressions environment if not used

boa-dev · Oct 4, 2023 · d53a0c4 · d53a0c4
1 parent f54f79e
commit d53a0c4
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/boa_engine/src/bytecompiler/declarations.rs b/boa_engine/src/bytecompiler/declarations.rs
@@ -932,8 +932,11 @@ impl ByteCompiler<'_, '_> {
             // c. Let env be NewDeclarativeEnvironment(calleeEnv).
             // d. Assert: The VariableEnvironment of calleeContext is calleeEnv.
             // e. Set the LexicalEnvironment of calleeContext to env.
-            let _ = self.push_compile_environment(false);
-            additional_env = true;
+
+            if self.can_optimize_local_variables {
+                let _ = self.push_compile_environment(false);
+                additional_env = true;
+            }
         }
 
         // 22. If argumentsObjectNeeded is true, then