>>> issues found when migrating to null safety void main() => print('first: ${first([1, 2, 3])}'); <<< void main() => print('first: ${first([1, 2, 3])}'); >>> var x = '${jsonEncode([ 1, ])}'; <<< var x = '${jsonEncode([ 1, ])}'; >>> main() { patch..[entityId].removeWhere(); } <<< main() { patch..[entityId].removeWhere(); }