This is a simple application with a script to move source maps (anything with *.map) out of the www directory and into a maps directory in the root of the project.
To see the script in action, simply run npm run build from the root directory of the project.
When the build completes, you should have a new directory full of source map (*.map) files.
Note: Prior to running the test again, you'll want to delete the maps directory (I could've scripted this in, but ¯ \ _ (ツ) _ / ¯)