Source Maps not working with Webpack
In bundle.js
you will see original transpiled webpack bundle - this is normal behaviour.
Open webpack://
and you will see your project files.
Add the following in your webpack.config.js file:
devtool: "#inline-source-map",
You can find clear information about it from the webpack website: https://webpack.js.org/configuration/devtool/
Also please find attached screenshot of sourcemap part from the webpack website.