git-hook

#!/usr/bin/env bash

# Redirect output to stderr.
exec 1>&2

STAGED_FILES="$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.m?js$')"

if [[ "$STAGED_FILES" = ""  ]]; then
	printf "\t\033[32mESLint Passed: no modified .mjs files found.\033[0m\n"
	exit 0
fi

if ! yarn run eslint; then
	printf "\t\033[31mESLint not installed.\033[0m (Please run \`\033[1myarn install\033[0m\`.)\n"
	exit 1
fi

PASS=true

for FILE in $STAGED_FILES; do
	if yarn run eslint --no-eslintrc --config .github/eslintrc.yml -- "$FILE" ; then
		printf "\t\033[32mESLint Passed\033[0m: %s\n" "$FILE"
	else
		printf "\t\033[31mESLint Failed\033[0m: %s\n" "$FILE"
		PASS=false
	fi
done

if "$PASS"; then
	echo
	printf "\t\033[32;1mESLint: COMMIT SUCCEEDED\033[0m\n"
else
	echo
	printf "\t\033[41;1mESLint: COMMIT FAILED.\033[0m\n"
	printf "\t\033[31;1mYour commit contains files that should pass ESLint but do not.\033[0m\n"
	printf "\t\033[31;1mPlease fix the ESLint errors and try again.\033[0m\n"
	printf "\t(You can try \`\033[1myarn run eslint --ext .mjs . --fix\033[0m\` for auto-fix and don't forget to run \`\033[1mgit add\033[0m\`.)\n"
	exit 1
fi