JSHint pre-commit git hook with a prompt to continue when there are errors

pre-commit_jshint.sh

#!/bin/bash
#
# Run JSHint validation before commit

# Path to custom jshint config file if you have one (relative to root directory of repository)
jshint_config_file=""

# Get all changed js files (minus any minfied files)
files=$(git diff --cached --name-only --diff-filter=ACMR -- *.js **/*.js | grep -v 'min')
pass=true;

jshint_cmd="jshint"
if [ "${jshint_config_file}" != "" ]; then
	jshint_cmd+=" --config ${root_dir}/${jshint_config_file}"
fi

echo -e "\nValidating JavaScript:\n"

# Run JSHint on all changed .js files
if [ "$files" != "" ]; then
	for file in ${files}; do

		${jshint_cmd} ${file}

		if [[ $? -ne 0 ]]; then
			pass=false
		fi

	done
fi

if $pass; then
	echo -e "\nJSHint Passed\n"
	exit 0

# Prompt to carry on with commit if there are JSHint errors
else

	exec < /dev/tty #need this since you can't do regular stdin during a git commit

	read -p "Some JavaScript files are invalid. Would you like to continue? (Y/N): " yn

	while true; do

		case $yn in
			[Yy]* )
				echo -e "\nContinuing commit with invalid JavaScript files...\n"
				exec <& -
				exit 0;;

			[Nn]* )
				echo -e "\nCommit Failed :("
				echo -e "Please fix errors and try again."
				exec <& -
				exit 1;;

			* )
				read -p "Please enter a valid response(Y/N): " yn
		esac

	done
fi