Fix issues with new js interop

[Rexios80]

No description provided.

[Rexios80]

There must still be an issue with the function getters but I'm not sure what. This exception seems to be internal to the Google Maps code. Do you have any ideas?

 ══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
 The following JSNoSuchMethodError was thrown running a test:
 TypeError: Cannot read properties of undefined (reading 'x')
 
 When the exception was thrown, this was the stack:
 https://maps.googleapis.com/maps/api/js?key=AIzaSyAa9cRBkhuxGq3Xw3HPz8SPwaVOhRmm7kk&libraries=geometry 363:449  fromLatLngToPoint
 packages/google_maps/src/generated/image_overlay/projection.dart 26:18                                          <fn>
 packages/google_maps_flutter_web/src/third_party/to_screen_location/to_screen_location.dart 44:42               toScreenLocation
 packages/google_maps_flutter_web/src/google_maps_controller.dart 406:9                                          getScreenCoordinate
 dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54                                              runBody
 dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 127:5                                              _async
 packages/google_maps_flutter_web/src/google_maps_controller.dart 401:47                                         getScreenCoordinate
 packages/google_maps_flutter_web/src/google_maps_flutter_web.dart 163:22                                        getScreenCoordinate
 packages/google_maps_flutter/src/controller.dart 216:10                                                         getScreenCoordinate
 projection_test.dart 147:29                                                                                     <fn>
 dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 45:50                                              <fn>
 dart-sdk/lib/async/zone.dart 1407:47                                                                            _rootRunUnary
 dart-sdk/lib/async/zone.dart 1308:19                                                                            runUnary
 dart-sdk/lib/async/future_impl.dart 163:18                                                                      handleValue
 dart-sdk/lib/async/future_impl.dart 861:44                                                                      handleValueCallback
 dart-sdk/lib/async/future_impl.dart 890:13                                                                      _propagateToListeners
 dart-sdk/lib/async/future_impl.dart 666:5                                                                       [_completeWithValue]
 dart-sdk/lib/async/future_impl.dart 736:7                                                                       <fn>
 dart-sdk/lib/async/zone.dart 1399:13                                                                            _rootRun
 dart-sdk/lib/async/zone.dart 1301:19                                                                            run
 dart-sdk/lib/async/zone.dart 1209:7                                                                             runGuarded
 dart-sdk/lib/async/zone.dart 1249:23                                                                            callback
 dart-sdk/lib/async/schedule_microtask.dart 40:11                                                                _microtaskLoop
 dart-sdk/lib/async/schedule_microtask.dart 49:5                                                                 _startMicrotaskLoop
 dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 181:7                                              <fn>
 
 The test description was:
   target of map is in center of widget
 ════════════════════════════════════════════════════════════════════════════════════════════════════

[a14n]

Thanks for your contribution.

In all examples I never saw any explicit call of the function getter you added. Those functions are usually intended to be implemented for custom usage.

Regarding the issue you faced I will try another pattern and see if it works.

[a14n]

I refactored how getters of function are implemented in 5972ce5. I made a quick test that looks good. Could you try it on your Flutter PR? If it's ok I'll publish a new dev version.

[Rexios80]

Unfortunately I get the same issue. I would say it's an issue with the test but it definitely works with the old google_maps version.

[Rexios80]

I created #133 to track this