🐛 Bug Fixes

• f1e2dc0 semantic: No error in check_function_redeclaration for CommonJS files (#18231) (overlookmotel)
• 645c3f0 transformer: Use require not import in CommonJS files (#18226) (overlookmotel)
• ee9f6a4 mangler: Use retain instead of truncate to remove empty frequency slots (#18225) (Dunqing)

⚡ Performance

• 52073d9 semantic: Use cheaper test for source type (#18235) (overlookmotel)