fix: Resolve analyzer errors from DataSourceRequestor refactoring

- Add missing data_source.dart import to DataSourceRequestor
- Add back _getEnvironmentIdFromHeaders method to StreamingDataSource
- Remove unused imports from PollingDataSource (http, credential_type, default_config, get_environment_id)
- Remove unused imports from StreamingDataSource (http)
- Remove unused _credential field from PollingDataSource

These fixes address all 12 analyzer issues found in CI:
- 4 errors (undefined class/methods)
- 8 warnings (unused imports/fields)

Co-Authored-By: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

packages/common_client/lib/src/data_sources/data_source_requestor.dart

@@ -3,6 +3,7 @@ import 'package:http/http.dart' as http;
 import 'package:launchdarkly_dart_common/launchdarkly_dart_common.dart';
 import '../config/defaults/credential_type.dart';
 import '../config/defaults/default_config.dart';
+import 'data_source.dart';
 import 'data_source_status.dart';
 import 'get_environment_id.dart';
 

packages/common_client/lib/src/data_sources/polling_data_source.dart

@@ -1,16 +1,12 @@
 import 'dart:async';
 import 'dart:convert';
-import 'package:http/http.dart' as http;
 import 'package:launchdarkly_dart_common/launchdarkly_dart_common.dart';
 import 'dart:math';
 
 import '../config/data_source_config.dart';
-import '../config/defaults/credential_type.dart';
-import '../config/defaults/default_config.dart';
 import 'data_source.dart';
-import 'data_source_status.dart';
 import 'data_source_requestor.dart';
-import 'get_environment_id.dart';
+import 'data_source_status.dart';
 
 HttpClient _defaultClientFactory(HttpProperties httpProperties) {
   return HttpClient(httpProperties: httpProperties);
@@ -47,8 +43,6 @@ final class PollingDataSource implements DataSource {
 
   final StreamController<DataSourceEvent> _eventController = StreamController();
 
-  late final String _credential;
-
   @override
   Stream<DataSourceEvent> get events => _eventController.stream;
 

packages/common_client/lib/src/data_sources/streaming_data_source.dart

@@ -1,7 +1,6 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math' as math;
-import 'package:http/http.dart' as http;
 
 import 'package:launchdarkly_dart_common/launchdarkly_dart_common.dart';
 import 'package:launchdarkly_event_source_client/launchdarkly_event_source_client.dart';
@@ -236,6 +235,16 @@ final class StreamingDataSource implements DataSource {
     await Future.delayed(Duration(milliseconds: retryDelay));
   }
 
+  String? _getEnvironmentIdFromHeaders(Map<String, String>? headers) {
+    var environmentId = getEnvironmentId(headers);
+    if (environmentId == null &&
+        DefaultConfig.credentialConfig.credentialType ==
+            CredentialType.clientSideId) {
+      environmentId = _credential;
+    }
+    return environmentId;
+  }
+
   Uri _buildStreamingUri() {
     return _buildUri(_endpoints.streaming, _dataSourceConfig.streamingReportPath,
         _dataSourceConfig.streamingGetPath);