pre-commit hook for JavaScript projects

js_pre_commit_hook.sh

#!/bin/sh

# Redirect output to stderr.
exec 1>&2

is_commit_clean=true

# invalid strings
consoleregexp='^\+.*console\.log\|fdescribe\|debugger'

# list all the files staged for commit
files_changed=$(git diff --cached --name-only 2>&1)

for file in $files_changed
do
  if git diff --cached $file | grep $consoleregexp >/dev/null; then
    echo "* $file"
    is_commit_clean=false
  fi
done

if [ $is_commit_clean == false ]; then
  echo ""
  echo "Errors, aborting. Ensure the following statements are removed from the files above before commiting"
  echo "**** console.log ****"
  echo "**** fdescribe ****"
  echo "**** debugger ****"
  exit 1
else
  exit 0
fi