Forbidden code pre-commit hook

pre-commit

#!/bin/bash

# Pre commit hook that prevents FORBIDDEN code from being commited.
# Add unwanted code to the FORBIDDEN array as necessary

FILES_PATTERN='\.(js|coffee)(\..+)?$'
FORBIDDEN=( debugger console.log )

for FILE in `git diff --cached --name-only | grep -E $FILES_PATTERN`; do
  for i in "${FORBIDDEN[@]}"
  do
    grep -n --color "^[ ]*$i" $FILE && echo "ERROR: The file \"$FILE\" contains \"$i\"" && exit 1
  done
done

exit 0