The follow are important
The details of served content can be found at http://localhost:9000/webpack-dev-server.
Static files in folder devServer/contentBase
Generated bundle index.js. This file is served directly from memory.
The path is set by /output/publicPath and is overrided by devServer/publicPath. Default=/
The filename is set by devServer/filename (The config output/path, output/filename has no impact). Default=index.js
Generated index.html. The same url path as bundle.js
Access: http://localhost/index (do not add .html extension)
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