fix: 287 Delete the generated files then flutter_gen won't generate files again

example/lib/freezed_sample.dart

@@ -1,6 +1,5 @@
 // main.dart
 import 'package:freezed_annotation/freezed_annotation.dart';
-import 'package:flutter/foundation.dart';
 
 part 'freezed_sample.freezed.dart';
 

example/lib/freezed_sample.freezed.dart

@@ -108,25 +108,17 @@ class __$$DataCopyWithImpl<$Res> extends _$UnionCopyWithImpl<$Res>
 
 /// @nodoc
 
-class _$Data with DiagnosticableTreeMixin implements Data {
+class _$Data implements Data {
   const _$Data(this.value);
 
   @override
   final int value;
 
   @override
-  String toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) {
+  String toString() {
     return 'Union(value: $value)';
   }
 
-  @override
-  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
-    super.debugFillProperties(properties);
-    properties
-      ..add(DiagnosticsProperty('type', 'Union'))
-      ..add(DiagnosticsProperty('value', value));
-  }
-
   @override
   bool operator ==(dynamic other) {
     return identical(this, other) ||
@@ -216,7 +208,7 @@ class _$Data with DiagnosticableTreeMixin implements Data {
 abstract class Data implements Union {
   const factory Data(final int value) = _$Data;
 
-  int get value => throw _privateConstructorUsedError;
+  int get value;
   @JsonKey(ignore: true)
   _$$DataCopyWith<_$Data> get copyWith => throw _privateConstructorUsedError;
 }
@@ -239,20 +231,14 @@ class __$$LoadingCopyWithImpl<$Res> extends _$UnionCopyWithImpl<$Res>
 
 /// @nodoc
 
-class _$Loading with DiagnosticableTreeMixin implements Loading {
+class _$Loading implements Loading {
   const _$Loading();
 
   @override
-  String toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) {
+  String toString() {
     return 'Union.loading()';
   }
 
-  @override
-  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
-    super.debugFillProperties(properties);
-    properties.add(DiagnosticsProperty('type', 'Union.loading'));
-  }
-
   @override
   bool operator ==(dynamic other) {
     return identical(this, other) ||
@@ -368,25 +354,17 @@ class __$$ErrorDetailsCopyWithImpl<$Res> extends _$UnionCopyWithImpl<$Res>
 
 /// @nodoc
 
-class _$ErrorDetails with DiagnosticableTreeMixin implements ErrorDetails {
+class _$ErrorDetails implements ErrorDetails {
   const _$ErrorDetails([this.message]);
 
   @override
   final String? message;
 
   @override
-  String toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) {
+  String toString() {
     return 'Union.error(message: $message)';
   }
 
-  @override
-  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
-    super.debugFillProperties(properties);
-    properties
-      ..add(DiagnosticsProperty('type', 'Union.error'))
-      ..add(DiagnosticsProperty('message', message));
-  }
-
   @override
   bool operator ==(dynamic other) {
     return identical(this, other) ||
@@ -476,7 +454,7 @@ class _$ErrorDetails with DiagnosticableTreeMixin implements ErrorDetails {
 abstract class ErrorDetails implements Union {
   const factory ErrorDetails([final String? message]) = _$ErrorDetails;
 
-  String? get message => throw _privateConstructorUsedError;
+  String? get message;
   @JsonKey(ignore: true)
   _$$ErrorDetailsCopyWith<_$ErrorDetails> get copyWith =>
       throw _privateConstructorUsedError;

example/pubspec.yaml

@@ -41,7 +41,6 @@ dependencies:
   local_auth: 2.0.1
   flutter_hooks: 0.18.3
   hooks_riverpod: 1.0.3
-  # async: 2.9.0
   dio: 4.0.6
   connectivity_plus: 2.3.0
   ua_client_hints: 1.1.0
@@ -51,7 +50,7 @@ dependencies:
   protobuf: 2.0.1
   json_serializable: 6.2.0
   json_annotation: ^4.5.0
-  freezed_annotation: 2.0.1
+  freezed_annotation: ^2.1.0
   intl: 0.17.0
   fixnum: 1.0.0
   shared_preferences: 2.0.13
@@ -107,6 +106,7 @@ dev_dependencies:
   integration_test:
     sdk: flutter
   build_runner: ^2.1.11
+  freezed: ^2.1.0+1
   flutter_gen_runner: ^4.3.0
 
   flutter_lints: ^2.0.1

packages/core/lib/flutter_generator.dart

@@ -7,7 +7,6 @@ import 'generators/assets_generator.dart';
 import 'generators/colors_generator.dart';
 import 'generators/fonts_generator.dart';
 import 'settings/config.dart';
-import 'utils/error.dart';
 import 'utils/file.dart';
 
 class FlutterGenerator {
@@ -23,24 +22,8 @@ class FlutterGenerator {
   final String colorsName;
   final String fontsName;
 
-  Future<Config?> getConfig() async {
-    Config config;
-
-    try {
-      config = await loadPubspecConfig(pubspecFile);
-    } on InvalidSettingsException catch (e) {
-      stderr.writeln(e.message);
-      return null;
-    } on FileSystemException catch (e) {
-      stderr.writeln(e.message);
-      return null;
-    }
-
-    return config;
-  }
-
-  Future<void> build({Config? config}) async {
-    config ??= await getConfig();
+  Future<void> build({Config? config, FileWriter? writer}) async {
+    config ??= loadPubspecConfigOrNull(pubspecFile);
     if (config == null) return;
 
     final flutter = config.pubspec.flutter;
@@ -49,6 +32,16 @@ class FlutterGenerator {
     final lineLength = config.pubspec.flutterGen.lineLength;
     final formatter = DartFormatter(pageWidth: lineLength, lineEnding: '\n');
 
+    void defaultWriter(String contents, String path) {
+      final file = File(path);
+      if (!file.existsSync()) {
+        file.createSync(recursive: true);
+      }
+      file.writeAsStringSync(contents);
+    }
+
+    writer ??= defaultWriter;
+
     final absoluteOutput =
         Directory(normalize(join(pubspecFile.parent.path, output)));
     if (!absoluteOutput.existsSync()) {
@@ -58,30 +51,30 @@ class FlutterGenerator {
     if (flutterGen.colors.enabled && flutterGen.colors.inputs.isNotEmpty) {
       final generated =
           generateColors(pubspecFile, formatter, flutterGen.colors);
-      final colors =
-          File(normalize(join(pubspecFile.parent.path, output, colorsName)));
-      writeAsString(generated, file: colors);
-      stdout.writeln('Generated: ${colors.absolute.path}');
+      final colorsPath =
+          normalize(join(pubspecFile.parent.path, output, colorsName));
+      writer(generated, colorsPath);
+      stdout.writeln('Generated: $colorsPath');
     }
 
     if (flutterGen.assets.enabled && flutter.assets.isNotEmpty) {
       final generated = generateAssets(
         AssetsGenConfig.fromConfig(pubspecFile, config),
         formatter,
       );
-      final assets =
-          File(normalize(join(pubspecFile.parent.path, output, assetsName)));
-      writeAsString(generated, file: assets);
-      stdout.writeln('Generated: ${assets.absolute.path}');
+      final assetsPath =
+          normalize(join(pubspecFile.parent.path, output, assetsName));
+      writer(generated, assetsPath);
+      stdout.writeln('Generated: $assetsPath');
     }
 
     if (flutterGen.fonts.enabled && flutter.fonts.isNotEmpty) {
       final generated =
           generateFonts(formatter, flutter.fonts, flutterGen.fonts);
-      final fonts =
-          File(normalize(join(pubspecFile.parent.path, output, fontsName)));
-      writeAsString(generated, file: fonts);
-      stdout.writeln('Generated: ${fonts.absolute.path}');
+      final fontsPath =
+          normalize(join(pubspecFile.parent.path, output, fontsName));
+      writer(generated, fontsPath);
+      stdout.writeln('Generated: $fontsPath');
     }
 
     stdout.writeln('FlutterGen finished.');

packages/core/lib/settings/config.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 
+import 'package:flutter_gen_core/utils/error.dart';
 import 'package:flutter_gen_core/utils/version.dart';
 import 'package:path/path.dart';
 import 'package:yaml/yaml.dart';
@@ -14,23 +15,31 @@ class Config {
   final File pubspecFile;
 }
 
-Future<Config> loadPubspecConfig(File pubspecFile) async {
+Config loadPubspecConfig(File pubspecFile) {
   stdout.writeln('$flutterGenVersion Loading ... '
       '${normalize(join(
     basename(pubspecFile.parent.path),
     basename(pubspecFile.path),
   ))}');
-  final content = await pubspecFile.readAsString().catchError((dynamic error) {
-    throw FileSystemException(
-        'Cannot open pubspec.yaml: ${pubspecFile.absolute}');
-  });
+  final content = pubspecFile.readAsStringSync();
   final userMap = loadYaml(content) as Map?;
   final defaultMap = loadYaml(_defaultConfig) as Map?;
   final mergedMap = mergeMap([defaultMap, userMap]);
   final pubspec = Pubspec.fromJson(mergedMap);
   return Config._(pubspec: pubspec, pubspecFile: pubspecFile);
 }
 
+Config? loadPubspecConfigOrNull(File pubspecFile) {
+  try {
+    return loadPubspecConfig(pubspecFile);
+  } on FileSystemException catch (e) {
+    stderr.writeln(e.message);
+  } on InvalidSettingsException catch (e) {
+    stderr.writeln(e.message);
+  }
+  return null;
+}
+
 const _defaultConfig = '''
 name: $invalidStringValue
 

packages/core/lib/utils/file.dart

@@ -1,8 +1 @@
-import 'dart:io';
-
-void writeAsString(String text, {required File file}) {
-  if (!file.existsSync()) {
-    file.createSync(recursive: true);
-  }
-  file.writeAsStringSync(text);
-}
+typedef FileWriter = void Function(String contents, String path);

packages/core/test/assets_gen_test.dart

@@ -55,7 +55,7 @@ void main() {
 
     test('Assets with No lists on pubspec.yaml', () async {
       final pubspec = File('test_resources/pubspec_assets_no_list.yaml');
-      final config = await loadPubspecConfig(pubspec);
+      final config = loadPubspecConfig(pubspec);
       final formatter = DartFormatter(
           pageWidth: config.pubspec.flutterGen.lineLength, lineEnding: '\n');
 

packages/core/test/colors_gen_test.dart

@@ -22,7 +22,7 @@ void main() {
 
     test('Wrong colors settings on pubspec.yaml', () async {
       final pubspec = File('test_resources/pubspec_colors_no_inputs.yaml');
-      final config = await loadPubspecConfig(pubspec);
+      final config = loadPubspecConfig(pubspec);
       final formatter = DartFormatter(
           pageWidth: config.pubspec.flutterGen.lineLength, lineEnding: '\n');
 
@@ -34,7 +34,7 @@ void main() {
 
     test('Wrong colors settings on pubspec.yaml', () async {
       final pubspec = File('test_resources/pubspec_colors_no_inputs_list.yaml');
-      final config = await loadPubspecConfig(pubspec);
+      final config = loadPubspecConfig(pubspec);
       final formatter = DartFormatter(
           pageWidth: config.pubspec.flutterGen.lineLength, lineEnding: '\n');
 

packages/core/test/fonts_gen_test.dart

@@ -20,7 +20,7 @@ void main() {
     });
 
     test('Wrong fonts settings on pubspec.yaml', () async {
-      final config = await loadPubspecConfig(
+      final config = loadPubspecConfig(
         File('test_resources/pubspec_fonts_no_family.yaml'),
       );
       final formatter = DartFormatter(

packages/core/test/gen_test_helper.dart

@@ -19,7 +19,7 @@ Future<void> expectedAssetsGen(
       .build();
 
   final pubspecFile = File(pubspec);
-  final config = await loadPubspecConfig(pubspecFile);
+  final config = loadPubspecConfig(pubspecFile);
   final formatter = DartFormatter(
       pageWidth: config.pubspec.flutterGen.lineLength, lineEnding: '\n');
 
@@ -42,7 +42,7 @@ Future<void> expectedColorsGen(
       .build();
 
   final pubspecFile = File(pubspec);
-  final config = await loadPubspecConfig(pubspecFile);
+  final config = loadPubspecConfig(pubspecFile);
   final formatter = DartFormatter(
       pageWidth: config.pubspec.flutterGen.lineLength, lineEnding: '\n');
 
@@ -64,7 +64,7 @@ Future<void> expectedFontsGen(
   await FlutterGenerator(File(pubspec), fontsName: basename(generated)).build();
 
   final pubspecFile = File(pubspec);
-  final config = await loadPubspecConfig(pubspecFile);
+  final config = loadPubspecConfig(pubspecFile);
   final formatter = DartFormatter(
       pageWidth: config.pubspec.flutterGen.lineLength, lineEnding: '\n');