Module not found: "env"

[dflemstr]

When using wasm2es6js or even looking at the generated raw wasm file, the generated module refers to a module called "env". This module I assume should resolve to the main .js file generated by wasm-bindgen since it expects it to contain __wbindgen_throw according to the import table of the .wasm file.

However it also expects the __web_on_grow function which is not defined.

I'm attempting to integrate this tool with webpack. How should I map this "env" module?

[alexcrichton]

Thanks for the report! In general the wasm2es6js tool though expects the wasm module it's being run over to look like an ES6 module, meaning that imports look like JS import statements and such. The Rust compiler, however, has no way of configuring (right now) the module to import from, it's always env. The wasm-bindgen tool in this repository communicates metadata from the rust file to the tool itself to rewrite the imports, but other imports from rustc aren't rewritten as wasm-bindgen doesn't know about them.

I suspect this won't be usable over "general" ES module files, but rather a different strategy would be needed for loading the wasm file.

[alexcrichton]

I'm going to close this as I think this is a general "ES modules in wasm are a little underbaked issue" but otherwise the tool I believe is working as intended