Pre-commit hook to check for Javascript using ESLint

pre-commit-eslint

#!/bin/bash

STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep ".jsx\{0,1\}$")

# def colors
RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m' # No Color


if [[ "$STAGED_FILES" = "" ]]; then
  exit 0
fi

PASS=true

# echo "Validating Javascript:"

# Check for eslint
which eslint &> /dev/null
if [[ "$?" == 1 ]]; then
  echo "Please install ESlint"
  exit 1
fi

for FILE in $STAGED_FILES
do
  eslint "$FILE"

  if [[ "$?" != 0 ]]; then
    # echo "$GREEN ESLint Passed: $FILE $NC"
  # else
    # echo -e "$RED ESLint Failed: $FILE $NC"
    PASS=false
  fi
done

# echo "Javascript validation completed!"

if ! $PASS; then
  echo -e "$RED COMMIT ABORTED $NC"
  exit 1
# else
#   echo "$GREEN COMMIT SUCCEEDED $NC"
fi

exit $?

copy/append to .git/hooks/pre-commit