Thanks for the response.

1. It was not a big surprice for me that Node.js is faster with hash functions because C++ handle this really good.
2. For Fibonacci sequense I expected that results of Node.js and WebAssembly would be almost the same.
3. I agree that for more CPU intensive tasks WA should and is actually faster (for example tensorflow.js or Google Earth).
4. In current article I’ve tryed and described WA compiled with Golang only. Same tasks performed with another language (C/C++/Rust -> WA) can have totally different results (much faster than pure Node.js).