Shameless plug: if you're interested in learning WebAssembly — like really learning the bytecode format and how it works — you might like our book, WebAssembly from the Ground Up: https://wasmgroundup.com.
It starts with handcrafted bytecode for a minimal Wasm module in JavaScript, and then guides you through the creation of a simple compiler for a toy language.
It starts with handcrafted bytecode for a minimal Wasm module in JavaScript, and then guides you through the creation of a simple compiler for a toy language.