Upon trying to remove the node_modules directory created by npm install:
The source file name(s) are larger than is su
I needed to clean up an entire Projects directory for backup purposes, so I installed rimraf and ran this at the root dir (inside a git bash prompt):
find . -name "node_modules" -type d -prune -exec rimraf '{}' +
Very effective, truly recursive (avoids children node_modules) and fast on windows (thanks to rimraf).
Sources: