Rust(WebAssembly)とWebpackでエラーが出たとき

以下のようなエラーが出たとき、

Module parse failed: Unexpected character '' (1:0)
The module seem to be a WebAssembly module, but module is not flagged as WebAssembly module for webpack.
BREAKING CHANGE: Since webpack 5 WebAssembly is not enabled by default and flagged as experimental feature.
You need to enable one of the WebAssembly experiments via 'experiments.asyncWebAssembly: true' (based on async modules) or 'experiments.syncWebAssembly: true' (like webpack 4, deprecated).

エラー文内にも記載がありますが、以下の記載(2〜4行目)をwebpack.config.jsに追記してあげると良い。

module.exports = {
    experiments: {
        asyncWebAssembly: true,
    },
    resolve: {
        extensions: ['.js', '.wasm'],
    },
    plugins: [
        new HtmlWebpackPlugin(),
    ],
}

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