What is output property used for?
The output property tells webpack where to emit the bundles it creates and how to name these files. It defaults to ./dist/main.js for the main output file and to the ./dist folder for any other generated file.
while there can be multiple entry points, only one output configuration is specified.
The minimum requirement for the output property in your webpack configuration is to set its value to an object and provide an output.filename to use for the output file
If your configuration creates more than a single 'chunk' (as with multiple entry points or when using plugins like CommonsChunkPlugin), you should use substitutions to ensure that each file has a unique name.