[Bug]: incorrect ESM output with async wasm

[PupilTong]

Version

System:
    OS: Linux 6.14 Ubuntu 24.04.3 LTS 24.04.3 LTS (Noble Numbat)
    CPU: (32) x64 Intel(R) Core(TM) i9-14900K
    Memory: 86.84 GB / 125.49 GB
    Container: Yes
    Shell: 5.2.21 - /bin/bash
  Browsers:
    Chrome: 142.0.7444.134
    Chromium: 142.0.7444.59
    Firefox: 144.0.2
    Firefox Developer Edition: 144.0.2
  npmPackages:
    @rslib/core: ^0.18.0 => 0.18.0

Details

See reproduce

Reproduce link

https://github.com/PupilTong/wbg_array_element_ownership/tree/rslib_bug_report_async_wasm

Reproduce Steps

reproduce:

pnpm build
pnpm test

vitest works fine
rslib output has no hello() exported

[Timeless0911]

Currently, Rslib does not support exports being wrapped by the async wasm runtime in module. Maybe we can wrap with tla to load wasm in the future.

I think a workaround can write as below now:

async function initialize() {
  const { create_my_struct } = await import("../binary/debug.js");
  create_my_struct(1);
}

initialize();

export function hello() {
  console.log("Hello World");
}

[Timeless0911]

web-infra-dev/rspack#12338

fixed in advanced ESM

export default {
  lib: [
    {
      format: 'esm',
      experiments: {
        advancedEsm: true,
      },
    },
  ],
};