can't access property "__wbindgen_malloc"

[imjasonmiller]

Hi,

I've been trying to get the example to work, but I'm receiving an error that I haven't been able to solve. I must have overlooked something.

Taking the example from the documentation:

index.js

import("./pkg").then((module) => {
  module.greet("42");
});

lib.rs

use wasm_bindgen::prelude::*;

#[wasm_bindgen]
extern "C" {
    fn alert(s: &str);
}

#[wasm_bindgen]
pub fn greet(name: &str) {
    alert(&format!("Hello, {:?}!", name))
}

Then running npm run serve, gives the following error in the browser's console:

TypeError: can't access property "__wbindgen_malloc", _index_bg_wasm__WEBPACK_IMPORTED_MODULE_0__ is undefined

Oddly enough, the following for index.js does appear to show the alert, but does nothing with the passed string to fn greet():

import * as wasm from "./pkg/index_bg.wasm";

async function main() {
  wasm.greet("42");
}

main();

---

A minimal, reproducible example and used dependencies can be found here:

• https://github.com/imjasonmiller/webpack_wasm_bindgen

I've tried both Firefox 87.0b9 (64-bit) and Google Chrome 89.0.4389.90 (64-bit).

Thank you for your time.

[GoogleFeud]

I'm having the exact same issue!

[GoogleFeud]

I managed to fix the issue by using an earlier version of webpack.

    "webpack": "^4.29.4",
    "webpack-cli": "^3.1.1"

This is probably an issue with webpack