Compatibility with Flutter 3.0

[bounty1342]

: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
../…/src/resizeUtil.dart:87
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../flutter/packages/flutter/lib/src/widgets/binding.dart').
package:flutter/…/widgets/binding.dart:1
  double get textScaleFactor => WidgetsBinding.instance!.window.textScaleFactor;

[ricardormzglez]

I had the same error. I solved with this:
return Resize( builder: () => MaterialApp( ... );

[bounty1342]

The issue is that now with flutter3.0 the field is not nullable.