Git pre commit hook - test modified files with ESLint and Rubocop and for focus tags in spec files

pre-commit

#!/bin/sh

FILE_COUNT=$(git status | grep 'modified:' | wc -l)

if [ $FILE_COUNT -gt 100 ] ; then
  echo "File count is 100+, skipping pre-commit validation"
  exit 0
fi

FAILED=0
FILES=$(git diff --cached --name-only --diff-filter=M)

# Check modified Javascript files with ESLint
JS_FILES=$(echo "$FILES" | grep '\.js$')

if [[ ! $JS_FILES = "" ]]; then
  echo "Running ESLint..."
  for file in ${JS_FILES}; do
    git show :$file | node_modules/.bin/eslint --quiet $file
    if [[ $? != 0 ]] ; then
      FAILED=1
    fi
  done;
fi

# Check modified Ruby files with Rubocop
RB_FILES=$(echo "$FILES" | grep '\.rb$')

if [[ $RB_FILES != '' ]]; then
  echo "Running Rubocop..."
  bundle exec rubocop --force-exclusion $RB_FILES
  OUT=$?
  if [ $OUT -eq 1 ];then
    FAILED=1
  fi
fi

# Test files in spec folder for focus tags
SPEC_FILES=$(echo "$FILES" | grep '^spec\?')

if [[ ! $SPEC_FILES = "" ]]; then
  for file in ${SPEC_FILES}; do
    egrep -q ',\s?(:focus|focus:\s?true|:focus\s?=>\s?true)' $file
    if [[ $? != '' ]] ; then
      echo "Please focus and remove your focus tags before committing."
      echo $file
      FAILED=1
    fi
  done;
fi

if [[ $FAILED != 0 ]]; then
  echo "Pre-commit test failed, git commit denied!"
  exit 1
fi

exit 0