motor, building motion in one dimension

snippet.dart

import 'package:motor/motor.dart';

SingleMotionBuilder(
  motion: CupertinoMotion.bouncy(),
  value: targetValue, // Changes trigger smooth spring animation
  builder: (context, value, child) {
    return Container(
      width: value,
      height: value,
      color: Colors.blue,
    );
  },
)