fixes: remove duplicate imports

CHANGELOG.md

@@ -1,2 +1,5 @@
+# 1.0.1
+- remove duplicate imports from generated code
+
 # 1.0.0
 - initial release

README.md

@@ -1,4 +1,5 @@
 # Type Register Generator
+[![pub package](https://img.shields.io/pub/v/type_register.svg)](https://pub.dev/packages/type_register)   
 
 Code generator for creating helper functions for registering Hive types. It will generate method named registerAdapters with all the hive adapters for the types annotated with @HiveType.
 

example/lib/another_model.dart

@@ -4,3 +4,6 @@ part 'another_model.g.dart';
 
 @HiveType(typeId: 1)
 class AnotherModel {}
+
+@HiveType(typeId: 2)
+class AnothorAModel {}

example/lib/src/core/register_adapters.dart

@@ -4,5 +4,6 @@ import 'package:hive_local_storage/hive_local_storage.dart';
 
 void registerAdapters() {
   Hive.registerAdapter(AnotherModelAdapter());
+  Hive.registerAdapter(AnothorAModelAdapter());
   Hive.registerAdapter(ModelAdapter());
 }

lib/src/type_register_builder.dart

@@ -25,7 +25,12 @@ class TypeRegisterBuilder implements Builder {
 
   @override
   FutureOr<void> build(BuildStep buildStep) async {
-    String hiveImport = await _parseHiveImport(buildStep);
+    final hiveImport = await _parseHiveImport(buildStep);
+    if (hiveImport == null || hiveImport.isEmpty) {
+      log.warning(
+          'hive or hive_generator is not in dependencies or dev_dependencies. please add hive or hive_local_storage to dependencies and hive_generator to dev_dependencies in pubspec.yaml.');
+      return;
+    }
 
     /// parse output path from build.yaml
     final outputPath = options.config['output_path'] as String;
@@ -63,11 +68,16 @@ class TypeRegisterBuilder implements Builder {
       }
     }
 
-    final imports = files.map((e) => Directive.import(e.uri)).toList();
+    /// generate unique imports
+    final uniqueImports = <String>{};
+    for (var element in files) {
+      uniqueImports.add(element.uri);
+    }
+    final imports = uniqueImports.map((uri) => Directive.import(uri)).toList();
     imports.add(Directive.import(hiveImport));
     imports.sort((a, b) => a.compareTo(b));
 
-    final library = Library(
+    var library = Library(
       (builder) => builder
         ..directives.addAll(imports)
         ..body.addAll(
@@ -79,7 +89,6 @@ class TypeRegisterBuilder implements Builder {
           ],
         ),
     );
-
     final emitter = DartEmitter(
       orderDirectives: true,
       useNullSafetySyntax: true,
@@ -97,23 +106,23 @@ class TypeRegisterBuilder implements Builder {
     };
   }
 
-  FutureOr<String> _parseHiveImport(BuildStep buildStep) async {
+  FutureOr<String?> _parseHiveImport(BuildStep buildStep) async {
+    String? hiveImport;
     final pubspecYaml = await buildStep
         .readAsString(AssetId(buildStep.inputId.package, 'pubspec.yaml'));
     final pubspec = loadYaml(pubspecYaml) as Map;
     final dependenciesMap = pubspec['dependencies'] as Map;
+    final devDependenciesMap = pubspec['dev_dependencies'] as Map;
 
-    String hiveImport = '';
+    if (!devDependenciesMap.containsKey('hive_generator')) {
+      return null;
+    }
 
     if (dependenciesMap.containsKey('hive')) {
       hiveImport = 'package:hive/hive.dart';
     } else if (dependenciesMap.containsKey('hive_local_storage')) {
       hiveImport = 'package:hive_local_storage/hive_local_storage.dart';
     }
-    if (hiveImport.isEmpty) {
-      throw Exception(
-          'You must add `hive` or `hive_local_storage` to your pubspec.yaml');
-    }
     return hiveImport;
   }
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: type_register
 description: Generator which generates method named registerAdapters with all the hive adapters for the types annotated with @HiveType.
-version: 1.0.0
+version: 1.0.1
 topics: 
   - type-register-generator
   - dart
@@ -14,7 +14,6 @@ repository: https://github.com/kishormainali/type_register
 environment:
   sdk: ">=3.1.5 <4.0.0"
 
-
 dependencies: 
   analyzer: ">=6.0.0 <7.0.0"
   build: ^2.4.1
@@ -30,5 +29,6 @@ dependencies:
   equatable: ^2.0.5
 
 
+
 dev_dependencies:
   flutter_lints: ^3.0.1