I have a problem with web storm and github, I guess.
After I made some local changes in Local Changes appears some random files from node modules enter image description here. I didn't touch those files but it looks like I changed something.
It looks like you haven't added node_modules to your .gitignore file.
Add node_modules/ as a new line in that .gitignore file or create a new one. That way git will ignore any changes made in these files.