fix!: avoid false negatives when the current version is a pre-release…

… and there is a prior stable release on pub (#42)

Co-authored-by: Jochum van der Ploeg <jochum@vdploeg.net>

lib/src/pub_updater.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 
 import 'package:http/http.dart' as http;
 import 'package:process/process.dart';
+import 'package:pub_semver/pub_semver.dart';
 import 'package:pub_updater/src/models/models.dart';
 
 /// Exception thrown when the HTTP request fails.
@@ -36,6 +37,15 @@ class PubUpdater {
   }) async {
     final latestVersion = await getLatestVersion(packageName);
 
+    final currentVersionDesc = Version.parse(currentVersion);
+    final latestVersionDesc = Version.parse(latestVersion);
+
+    if (!latestVersionDesc.isPreRelease && currentVersionDesc.isPreRelease) {
+      // If the current version is a pre-release but the latest isn't,
+      // skip the version checking.
+      return true;
+    }
+
     return currentVersion == latestVersion;
   }
 

pubspec.yaml

@@ -10,6 +10,7 @@ dependencies:
   http: ^0.13.3
   json_annotation: ^4.1.0
   process: ^4.2.3
+  pub_semver: ^2.1.3
 
 dev_dependencies:
   build_runner: ^2.1.2

test/fixtures/fixtures.dart

@@ -0,0 +1,2 @@
+export 'pre_release_package_info_response.dart';
+export 'valid_package_info_response.dart';