Worked on the nodejs/node repository to address a critical issue affecting WebAssembly memory growth and atomic wait operations. Using C++ and JavaScript, applied a patch based on a V8 cherry-pick to ensure the memory’s ArrayBuffer is updated immediately after a grow operation, restoring correct atomic.wait semantics for wasm modules. This fix resolved a DCHECK that could be triggered during runtime when memory.grow() impacted the current isolate, improving the stability and reliability of WebAssembly workloads. The solution was validated through multi-maintainer review, aligning nodejs/node behavior with upstream V8 changes and reducing production incidents related to wasm atomic operations.