Update template to webpack 5

[jtpio]

Trying out the template with the recent webpack 5, it looks like the following change to the config is required to enable WebAssembly.

Thanks!

[olex-green]

I've tried to run with Webpack v5 with webpack-cli@4.1.0 and I got error: Error: Cannot find module 'webpack-cli/bin/config-yargs'

The solution: changing npm start script from:
"start": "rimraf dist pkg && webpack-dev-server --open -d",
to:
"start": "rimraf dist pkg && webpack serve"

[Swaagie]

It seems that the webpack-dev-server is not fully compatible yet webpack/webpack-dev-server#2807. I can confirm that experiments needs to be added to webpack config. Using webpack@5 without the dev server works fine btw

[JohnForster]

Using webpack@5 without the dev server works fine btw

@Swaagie I can't seem to get this working, I get the error: "ReferenceError: Cannot access '__wbindgen_string_new' before initialization" unless I use experiments: { syncWebAssembly: true } in my webpack.config.js. Synchronous loading of wasm modules is deprecated since webpack v4.

Is there a way to configure wasm-pack so that we can use asyncWebAssembly instead?

[xtuc]

@JohnForster this is likely an issue in the code that wasm-bindgen generates.