Git - Hook - Pre Commit - Flutter: format files before they are commited

pre-commit.sh

#!/bin/sh
#
# Autoformat all modified files before commit
#

function format_if_required {
  FILES=$1

  flutter format $FILES | grep -Ev '^(Unchanged)'

  echo "--> Autoformat was applied/checked ✅"
}

echo "----------------------------------------------------------"
echo "        Checking code format on staged files"
echo "----------------------------------------------------------"
CHANGED_FILES=$(git diff --diff-filter=d --cached --name-only | grep .dart)

if [ -z "$CHANGED_FILES" ];
then
  echo "--> No files added to check"
else
  format_if_required $CHANGED_FILES
fi

echo "--> Commit is ok ✅"
echo "----------------------------------------------------------"

exit 0