Your general approach is correct. Glimmer uses a similar approach, where it compiles templates to bytecode. https://github.com/glimmerjs/glimmer-vm/blob/master

Your general approach is correct. Glimmer uses a similar approach, where it compiles templates to bytecode. https://github.com/glimmerjs/glimmer-vm/blob/master/guides/01-introduction.md https://github.com/glimmerjs/glimmer-vm/blob/master/guides/0... NB: You need to update strings in the DOM outside of the limited context of wasm-forth, so there is still serialization and deserialization involved, or at least string buffer views.