Flutter - Check code format and fail if does not work, useful for CI flows

check-format.sh

#!/usr/bin/env bash
#
# Runs dartfmt from dart_style to check if all of the source files are well formatted
# Requires you to have dartfmt already in your path with 'pub global activate dart_style'
#

echo "-> Running 'flutter format' to check project dart style 🤓"

RESULT=$(flutter format -n lib/main.dart lib/src/ test/)

if [[ $? != 0 ]]; then
    echo "----> Command failed."
elif [[ $RESULT ]]; then
    echo "----> Some files are looking weird here 🤓:"
    echo "$RESULT"
    exit 1
else
    echo "----> All format is good ✅"
fi