TypeError: wasm is undefined when package name is not wasm and using a bundler

[lafkpages]

Describe the Bug

When running some functions that I have exported from Rust, I get TypeError: wasm is undefined. I noticed that this error gets thrown from inside the getUint8Memory0 function, so only functions that need it throw this error.

I also noticed that my Wasm package wasn't called wasm, and wasn't at node_modules/wasm. Renaming it back to wasm fixed everything.

Steps to Reproduce

See lafkpages/wasm-bindgen-error-repro.
This is a simple example that uses SvelteKit and Vite for a bundler, and produces the error described above (tested on Firefox 116). If you git reset --hard the latest commit in the repo, everything works fine.

Expected Behavior

I should be able to name my package whatever I want with no problems.

Actual Behavior

I can only call the package wasm or I get the above errors.

Additional Context

All above ^^

[lafkpages]

Also worth noting that this error disappears when building, it only happens in dev mode.

[daxpedda]

Even though I know little about the bundler backend, I'm pretty sure any name should work just fine from wasm-bindgens side.

Unfortunately, as much as I would like to help here, I know nothing about SvelteKit or Vite to understand what exactly is going on here.

[sukhmel]

I experience the same issue with a very minimal project without anything related to Svelte or Vite, with a manual load. Will try renaming the project renaming doesn't help

I can post a reproduction if needed not needed, the issue was not calling init, but now I can't understand why I get initSync and not init

Furthermore, I was missing type="module" for the script, and I rewrote the import, it was

import('./pkg/project_name.js').then(module => {
    module.initSync();
    ...
})

and became

import initSync, {...} from './pkg/project_name.js';
initSync().then(...);

I wasn't able to make the former accept no parameters, and maybe used it wrong, too. I wasn't able to get a function to be init, in the end