jscpd is a tool for detect copy/past "design pattern" in javascript code.
npm install coffee-script -g
npm install jscpd -g
jscpd -p /path/to/js/code -o /path/to/xml/output
-m, --min-lines [NUMBER]min size of duplication in code lines (Default is 5)
-t, --min-tokens [NUMBER]mim size of duplication in code tokens (Default is 70)
-p, --path [PATH] path to JavaScript code (Default is /home/apk/workspace/bmo/bmo-inv)
-i, --ignore PATH directory to ignore
-l, --log PATH path to log file
-o, --output PATH path to report xml file
--verbose show full info about copies
-v, --version Display the current version
-h, --help Display help and usage details