Remove bindgen imports and exports from the wasm file.

[zie1ony]

The wasm file generated with wasm_bindgen contains all the __wbindgen_placeholder__ stuff. Is it possible to remove all the bindgen imports and exports from the wasm file?

To see the motivation read: risc0/risc0#299

[Liamolucko]

There isn't a proper way to do that.

If you want to do it manually, running the binary through the wasm-bindgen CLI first might actually be a good idea, since it gets rid of a bunch of things which are only there to pass info the the CLI. After that, there should only be imports left, which you can manually replace with stub functions that just contain unreachable. For example:

25c25,26
<   (import "./verify_bg.js" "__wbindgen_throw" (func $wasm_bindgen::__wbindgen_throw::h81a929e30b40f97f (type 5)))
---
>   (func $wasm_bindgen::__wbindgen_throw::h81a929e30b40f97f (type 5) (param i32 i32)
>     unreachable)