Receiving 404 Module not found when importing js as type module

[codecycletechnologies]

Bug report

What is the current behavior?
Hi,
I am trying to integrate https://github.com/PolymerLabs/playground-elements with webpack.
For installing and using playground we need to add below code in index.html file.

<script
  type="module"
  src="/node_modules/playground-elements/playground-ide.js"
></script>

When we run this setup with webpack dev server, we are receiving 404 not found error for playground-ide.js

webpack.config.js

{
    mode: 'development',
    entry: { app: './index.ts' },
    devtool: 'inline-source-map',
    devServer: {
        contentBase: './dist',
    },
    watchOptions: {
        ignored: [ 'test/**', '**/node_modules' ],
    },
    resolve: {
        extensions: [ '.ts', '.js', '.html' ],
    },
    output: {
        path: resolve( './', 'dist' ),
        filename: '[name].js'
    },
    plugins: [
        new HtmlWebpackPlugin( {
            template: './src/index.html'
        } )
    ],
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                use: 'ts-loader',
                exclude: /node_modules/,
            },
            {
                test: /\.m?js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: [ '@babel/preset-env' ]
                    }
                }
            },
            {
                test: /\.(png|svg|jpg|gif)$/,
                use: [
                    'file-loader'
                ]
            },
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/,
                use: [
                    'file-loader'
                ]
            }
        ],
    },
    optimization: {
        splitChunks: {
            chunks: 'all'
        }
    }
}

If the current behavior is a bug, please provide the steps to reproduce.
Steps to reproduce

• use given web pack config
• add playground-ide in index.html as type module
• run web dev server and you will receive 404 not found

What is the expected behavior?

Other relevant information:
webpack version:
Node.js version:
Operating System:
Additional tools:

[webpack-bot]

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• webpack-5
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• critical-bug
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[alexander-akait]

Please provide reproducible test repo

[codecycletechnologies]

@alexander-akait this issue has been resolved by adding library path to entrypoint of webpack config.. Thanks