pre-commit git hook to check for leftover console.log(s)

pre-commit

#!/bin/sh
exec 1>&2
exec < /dev/tty

consoleregexp='^\+.*console\.log('

if test $(git diff --cached -U0 | grep $consoleregexp | wc -l) != 0
then
  exec git diff --cached | grep -ne $consoleregexp
  read -p "It looks like you have left some console.log statements in your code. Are you sure want to continue? (y/n)" yn
  echo $yn | grep ^[Yy]$
  if [ $? -eq 0 ]
  then
    exit 0;
  else
    exit 1;
  fi
fi