ESLint Pre Commit Check

pre-commit.sh

#!/bin/sh                                                                                            
# ESLint Pre Commit Check                        
# put to `.git/hooks/pre-commit`
                                                                                                     
eslint_check() {                                                                                     
  files=$(git diff --cached --name-only --diff-filter=AM | grep '\.jsx\?$')                          
  if [[ $files = "" ]] ; then                                                                        
    return                                                                                           
  fi                                                                                                 
  failed=0                                                                                           
  for file in ${files}; do                                                                           
    git show :$file | ./node_modules/eslint/bin/eslint.js $file                                      
    if [[ $? != 0 ]] ; then                                                                          
      failed=1                                                                                       
    fi                                                                                               
  done;                                                                                              
                                                                                                     
  if [[ $failed != 0 ]] ; then                                                                       
    echo "🚫 ESLint failed, git commit denied!"                                                       
    exit $failed                                                                                     
  fi                                                                                                 
}                                                                                                    
eslint_check