Worked on enhancing WebAssembly client compatibility within the nodejs/undici repository, focusing on testing and validation for Clang-22 environments. Updated and restructured the test suite using JavaScript and WebAssembly, refining export checks to ensure more reliable cross-compiler behavior. Improved the overall test infrastructure, making it easier to maintain and adapt for future compatibility needs. This effort reduced risk in cross-compiler scenarios and contributed to smoother release cycles for wasm-based workloads. Additionally, documentation was updated to support ongoing maintenance and facilitate future validation efforts, demonstrating a methodical approach to strengthening undici’s WebAssembly tooling and testing processes.