Git Pre-Commit Prohibit Debugging Commands

pre-commit.sh

#!/bin/sh
#
# Check to make sure we're not trying to commit debugging code

COMMIT_OK=true

# Find all staged files with appropriate file types (Ruby, Javascript, Vue) 
STAGED_MATCHING_FILENAMES=$(git diff --cached --name-only | grep -E '\.js$|.vue|.rb$')

# Loop over all of the files
for filename in $(echo $STAGED_MATCHING_FILENAMES)
do
  # Javascript or Vue file:
  # - check for `debugger`
  if [ $(echo $filename | grep -c -E '\.js$|.vue$') != '0' ]; then
    if [ $(git diff --cached $filename | grep -c "^+.*debugger") != '0' ]; then
      echo "GIT CHECK: $filename contains 'debugger'"
      COMMIT_OK=false
    fi
  fi

  # Ruby file:
  # - check for 'binding.pry'
  if [ $(echo $filename | grep -c -E '\.rb$') != '0' ]; then
    if [ $(git diff --cached $filename | grep -c "^+.*binding\.pry") != '0' ]; then
      echo "GIT CHECK: $filename contains 'binding.pry'"
      COMMIT_OK=false
    fi
  fi
done

if [ "$COMMIT_OK" = false ]; then
  echo "\n\n*** COMMIT REJECTED ***\n\n"
  exit 1
fi

exit 0