ESLint 3.0 Git Pre Commit Hook

commit-msg

#!/bin/bash
files=$(git diff --cached --name-only | grep '\.jsx\?$')

# Prevent ESLint help message if no files matched
if [[ $files = "" ]] ; then
  exit 0
fi

failed=0
for file in ${files}; do
  git show :$file | eslint $file
  if [[ $? != 0 ]] ; then
    failed=1
  fi
done;

if [[ $failed != 0 ]] ; then
  echo "🚫🚫🚫 ESLint failed, git commit denied!"
  exit $failed
fi

I've added this to my composer.json so when doing 'composer install', everybody in team would get the script:

"scripts": {
        "pre-install-cmd": [
            "[[ -f .git/hooks/commit-msg ]] || curl https://gist.githubusercontent.com/wesbos/8aec9d2ff7f7cf9dd65ca2c20d5dfc23/raw/f662c8b15515180c8310e2d20d192dd3d92a7d28/commit-msg --output .git/hooks/commit-msg && chmod +x .git/hooks/commit-msg"
        ]
    }