Export observable.dart

[cmengler]

Please ignore if it's intentional to optionally import observable.dart due to the use of extensions / support for earlier dart SDKs -- the reason for PR was to satisfy analyzer linter rule for implementation_imports (Don't import implementation files from another package.)

[vaind]

Would the following patch (i.e. adding lib/observable.dart) satisfy the linter while keeping SDK support to 2.6.0?

Index: example/flutter/objectbox_demo/lib/main.dart
===================================================================
--- example/flutter/objectbox_demo/lib/main.dart	(revision ed99ffebc698e32d67d5e40d68c19c94b66d1c15)
+++ example/flutter/objectbox_demo/lib/main.dart	(date 1604571112304)
@@ -3,7 +3,7 @@
 import 'package:intl/intl.dart';
 import 'package:path_provider/path_provider.dart';
 import 'objectbox.g.dart';
-import 'package:objectbox/src/observable.dart';
+import 'package:objectbox/observable.dart';
 import 'dart:async';
 import 'dart:io';
 
Index: README.md
===================================================================
--- README.md	(revision ed99ffebc698e32d67d5e40d68c19c94b66d1c15)
+++ README.md	(date 1604571122078)
@@ -164,7 +164,7 @@
 Note: Dart Streams can be extended with [rxdart](https://github.com/ReactiveX/rxdart).
 
 ```dart
-    import "package:objectbox/src/observable.dart";
+    import "package:objectbox/observable.dart";
 
     // final store = ...
     final query = box.query(condition).build();
Index: test/stream_test.dart
===================================================================
--- test/stream_test.dart	(revision ed99ffebc698e32d67d5e40d68c19c94b66d1c15)
+++ test/stream_test.dart	(date 1604570980115)
@@ -1,6 +1,6 @@
 import 'dart:async';
 
-import 'package:objectbox/src/observable.dart';
+import 'package:objectbox/observable.dart';
 import 'package:test/test.dart';
 
 import 'entity.dart';
Index: lib/observable.dart
===================================================================
--- lib/observable.dart	(date 1604571085857)
+++ lib/observable.dart	(date 1604571085857)
@@ -0,0 +1,1 @@
+export 'src/observable.dart';

[cmengler]

Perfect @vaind -- that work's well, much better approach! 👍

[cmengler]

Would you like me to update PR using your patch instead -- or close this and leave for you?

[vaind]

Already landed in main and going to be released in a bit

c87b566

[cmengler]

Nice work! thank you very much :)