As my frontend development workflow gets more and more dependent on Grunt and node.js there are are issues coming up when Drupal tries to parse .info files from theme directories. I’ve had a hard time working around this by putting Gruntfile.js and package.json in a hidden subdirectory of my theme, but this resulted in a lot of broken Grunt tasks (and it’s basically yet another hack because it simply relies on the fact that Drupal doesn’t scan directories starting with a dot).
So I went the easy yet dirty way and hacked the Drupal core. Yes, yes, it’s bad, but I didn’t see another way without wasting yet even more hours just to be able to employ a modern frontend workflow.
All I had to do was changing the nomask value in line 2109 of includes/file.inc to 'nomask' => '/(\.\.?|CVS|node_modules)$/',
This makes sure Drupal won’t parse the .info files from any node_modules folder, et voilà, all Grunt tasks and Drupal work peacefully side by side!
Source: https://www.drupal.org/node/2329453#comment-9360519