Unfortunately, with minification, obfuscation, and transpilation, I think learning via view source has long been dead on the web. The loss of fidelity is simply too great.
That said, just as you can convert LLVM bitcode back and forth between binary and textual representation, you will be able to with WAsm as well.
That said, just as you can convert LLVM bitcode back and forth between binary and textual representation, you will be able to with WAsm as well.