Also, any idea when WASM TB will be upgraded? Indeed, we need at least emscripten 2.0.32 to handle "as_handle()" method. With 22ce8ed05be37d676739a578b05cc5217109fd87 "Emscripten: Unconditional --enable-wasm-exceptions", we even need emscripten 3.1.3 minimum Julien