scheduleMicrotask utils removed in favor of dart:async

getQueryData wrong arrangment of arguments
Query & Retryer's future property is replaced with Completer
queryFn, fetchFn & fn types corrected
exported all the functions/class/enum  from core (incomplete)
flutter dependency dropped since the core is a Dart package

packages/fl_query/example/bin/example.dart

@@ -127,20 +127,18 @@ var todos = [
   },
 ];
 
-void main(List<String> arguments) {
+void main(List<String> arguments) async {
-  QueryCache cache = QueryCache();
+  var key = QueryKey("TEST");
-  for (var todo in todos.asMap().entries) {
+  QueryClient queryClient = QueryClient();
-    cache.writeQuery(QueryKey.fromList(["KEY", todo.key.toString()]), data: {
+  queryClient.mount();
-      "data": todo.value,
+  var data = await queryClient.fetchQuery<Map, dynamic, Map>(
-      "meta": {
+    queryKey: key,
-        "created": DateTime.now(),
+    queryFn: (context) {
-        "expiration": DateTime.now().add(Duration(hours: 2))
+      return Future.value(todos.first);
-      }
+    },
-    });
+  );
-  }
+  print("FETCHED DATA=====");
-
+  print(data);
-  for (var i = 0; i < todos.length; i++) {
+  print("======CACHED DATA");
-    var result = cache.readQuery(QueryKey.fromList(["KEY", i.toString()]));
+  print(queryClient.getQueryData(key));
-    print(result);
-  }
 }

packages/fl_query/example/pubspec.lock

@@ -8,13 +8,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.8.2"
-  characters:
-    dependency: transitive
-    description:
-      name: characters
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
@@ -43,11 +36,6 @@ packages:
       relative: true
     source: path
     version: "0.0.1"
-  flutter:
-    dependency: transitive
-    description: flutter
-    source: sdk
-    version: "0.0.0"
   hive:
     dependency: transitive
     description:
@@ -97,11 +85,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.1"
-  sky_engine:
-    dependency: transitive
-    description: flutter
-    source: sdk
-    version: "0.0.99"
   source_span:
     dependency: transitive
     description:
@@ -137,13 +120,5 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.5"
-  vector_math:
-    dependency: transitive
-    description:
-      name: vector_math
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.1"
 sdks:
   dart: ">=2.15.1 <3.0.0"
-  flutter: ">=1.17.0"

packages/fl_query/lib/fl_query.dart

@@ -1 +1,4 @@
 library fl_query;
+
+export 'package:fl_query/src/core/core.dart';
+// export 'package:fl_query/src/core/framework.dart';

packages/fl_query/lib/src/core/core.dart

@@ -0,0 +1,21 @@
+export 'package:fl_query/src/core/retryer.dart' show CancelledError;
+export 'package:fl_query/src/core/query_cache.dart' show QueryCache;
+export 'package:fl_query/src/core/query_client.dart' show QueryClient;
+export 'package:fl_query/src/core/query_observer.dart' show QueryObserver;
+export 'package:fl_query/src/core/query_key.dart';
+// export 'package:fl_query/src/core/queriesObserver.dart' show QueriesObserver;
+// export 'package:fl_query/src/core/infiniteQueryObserver.dart' show InfiniteQueryObserver;
+// export 'package:fl_query/src/core/mutationCache.dart' show MutationCache;
+// export 'package:fl_query/src/core/mutationObserver.dart' show MutationObserver;
+// export 'package:fl_query/src/core/logger.dart' show setLogger;
+export 'package:fl_query/src/core/notify_manager.dart' show notifyManager;
+// export 'package:fl_query/src/core/focusManager.dart' show focusManager;
+export 'package:fl_query/src/core/online_manager.dart' show onlineManager;
+export 'package:fl_query/src/core/utils.dart' show hashQueryKey;
+export 'package:fl_query/src/core/retryer.dart' show isCancelledError;
+// export 'package:fl_query/src/core/hydration.dart' show dehydrate, DehydrateOptions, DehydratedState, HydrateOptions, ShouldDehydrateMutationFunction, ShouldDehydrateQueryFunction;
+
+export 'package:fl_query/src/core/models.dart';
+export 'package:fl_query/src/core/query.dart' show Query;
+// export type { Mutation } from './mutation'
+// export type { Logger } from './logger'

packages/fl_query/lib/src/core/models.dart

@@ -23,7 +23,7 @@ class QueryOptions<TQueryFnData, TError, TData> {
   RetryDelayFunction<TError>? retryDelay;
   Duration? cacheTime;
   bool Function(TData? oldData, TData newData)? isDataEqual;
-  QueryFunction? queryFn;
+  QueryFunction<TQueryFnData, dynamic>? queryFn;
   QueryKey? queryKey;
 
   /// Basically [QueryKey.key] in short form
@@ -434,7 +434,7 @@ class QueryObserverOptions<TQueryFnData, TError, TData, TQueryData>
     QueryKeyHashFunction? queryKeyHashFn,
     Duration? cacheTime,
     bool Function(TQueryData? oldData, TQueryData newData)? isDataEqual,
-    QueryFunction? queryFn,
+    QueryFunction<TQueryFnData, dynamic>? queryFn,
     String? queryHash,
     TQueryData? initialData,
     DateTime? initialDataUpdatedAt,
@@ -532,7 +532,7 @@ class FetchQueryOptions<TQueryFnData, TError, TData>
     RetryDelayFunction<TError>? retryDelay,
     Duration? cacheTime,
     bool Function(TData? oldData, TData newData)? isDataEqual,
-    QueryFunction? queryFn,
+    QueryFunction<TQueryFnData, dynamic>? queryFn,
     QueryKey? queryKey,
     String? queryHash,
     QueryKeyHashFunction? queryKeyHashFn,

packages/fl_query/lib/src/core/notify_manager.dart

@@ -1,6 +1,6 @@
 // TYPES
 
-import 'package:fl_query/src/core/utils.dart';
+import 'dart:async';
 
 typedef NotifyCallback = void Function();
 
@@ -44,7 +44,7 @@ class _NotifyManager {
     if (_transactions > 0) {
       _queue.add(callback);
     } else {
-      scheduleMicrotask((val) {
+      scheduleMicrotask(() {
         _notifyFn(callback);
       });
     }
@@ -66,7 +66,7 @@ class _NotifyManager {
     var queue = _queue;
     _queue = [];
     if (queue.isNotEmpty) {
-      scheduleMicrotask((val) {
+      scheduleMicrotask(() {
         _batchNotifyFn(() {
           queue.forEach((fn) {
             _notifyFn(fn);

packages/fl_query/lib/src/core/query.dart

@@ -18,7 +18,7 @@ class FetchOptions {
 }
 
 class FetchContext<TQueryFnData, TError, TData> {
-  FutureOr Function() fetchFn;
+  FutureOr<TQueryFnData> Function() fetchFn;
   FetchOptions? fetchOptions;
   QueryOptions<TQueryFnData, TError, TData> options;
   QueryKey queryKey;
@@ -171,7 +171,8 @@ class Query<TQueryFnData, TError, TData> {
   QueryMeta? meta;
 
   QueryCache _cache;
-  Future<TData>? _future;
+  // Future<TData>? _future;
+  Completer<TData>? _completer;
   Timer? _gcTimeout;
   Retryer<TData, TError>? _retryer;
   List<QueryObserver> _observers;
@@ -268,22 +269,28 @@ class Query<TQueryFnData, TError, TData> {
     DataUpdateFunction<TData?, TData> updater, {
     DateTime? updatedAt,
   }) {
-    var prevData = this.state.data;
+    try {
-    var data = updater(prevData);
+      var prevData = this.state.data;
-    // Use prev data if an isDataEqual function is defined and returns `true`
+      var data = updater(prevData);
-    if (this.options.isDataEqual?.call(prevData, data) == true) {
+      // Use prev data if an isDataEqual function is defined and returns `true`
-      data = prevData as TData;
+      if (this.options.isDataEqual?.call(prevData, data) == true) {
-    } else if (this.options.structuralSharing != false) {
+        data = prevData as TData;
-      // Structurally share data between prev and new data if needed
+      } else if (this.options.structuralSharing != false) {
-      data = replaceEqualDeep<TData>(prevData ?? {} as TData, data);
+        // Structurally share data between prev and new data if needed
+        data = replaceEqualDeep<TData>(prevData ?? {} as TData, data);
+      }
+      // Set data and mark it as cached
+      _dispatch(Action(
+        ActionType.success,
+        data: data,
+        dataUpdatedAt: updatedAt,
+      ));
+      return data;
+    } catch (e, stack) {
+      print("[Query.setData] $e");
+      print(stack);
+      rethrow;
     }
-    // Set data and mark it as cached
-    _dispatch(Action(
-      ActionType.success,
-      data: data,
-      dataUpdatedAt: updatedAt,
-    ));
-    return data;
   }
 
   void setState(
@@ -298,9 +305,13 @@ class Query<TQueryFnData, TError, TData> {
   }
 
   Future<void> cancel({bool? revert, bool? silent}) {
-    var future = _future;
+    // var future = _future;
     _retryer?.cancel(revert: revert, silent: silent);
-    return future != null ? future.then(noop).catchError(noop) : Future.value();
+    if (_completer != null && !_completer!.isCompleted) {
+      _completer!.completeError("Cancelled Job", StackTrace.current);
+      return _completer!.future.then(noop).catchError(noop);
+    }
+    return Future.value();
   }
 
   void reset() {
@@ -330,11 +341,11 @@ class Query<TQueryFnData, TError, TData> {
           fetchOptions?.cancelRefetch == true) {
         // Silently cancel current fetch if the user wants to cancel re-fetches
         this.cancel(silent: true);
-      } else if (_future != null) {
+      } else if (_completer != null) {
         // make sure that retries that were potentially cancelled due to unmounts can continue
         _retryer?.continueRetry();
         // Return current promise if we are already fetching
-        return _future!;
+        return _completer!.future;
       }
     }
 
@@ -354,7 +365,8 @@ class Query<TQueryFnData, TError, TData> {
           queryKeyHashFn: observer.options.queryKeyHashFn,
           cacheTime: observer.options.cacheTime,
           isDataEqual: observer.options.isDataEqual,
-          queryFn: observer.options.queryFn,
+          queryFn:
+              observer.options.queryFn as QueryFunction<TQueryFnData, dynamic>,
           queryHash: observer.options.queryHash,
           initialData: observer.options.initialData,
           initialDataUpdatedAt: observer.options.initialDataUpdatedAt,
@@ -387,16 +399,17 @@ class Query<TQueryFnData, TError, TData> {
     // })
 
     // Create fetch function
-    fetchFn() {
+    FutureOr<TQueryFnData> fetchFn() {
       if (this.options.queryFn == null) {
         return Future.error('Missing queryFn');
       }
       _abortSignalConsumed = false;
-      return options?.queryFn?.call(queryFnContext);
+      return options!.queryFn!.call(queryFnContext);
     }
 
     // Trigger behavior hook
-    FetchContext<TQueryFnData, TError, TData> context = FetchContext(
+    FetchContext<TQueryFnData, TError, TData> context =
+        FetchContext<TQueryFnData, TError, TData>(
       fetchOptions: fetchOptions,
       options: this.options,
       queryKey: queryKey,
@@ -423,7 +436,7 @@ class Query<TQueryFnData, TError, TData> {
 
         // Notify cache callback
         _cache.onData?.call(data, this);
-
+        if (_completer?.isCompleted == false) _completer?.complete(data);
         // Remove query after fetching if cache time is 0
         if (this.cacheTime == null || this.cacheTime == Duration.zero) {
           _optionalRemove();
@@ -447,6 +460,9 @@ class Query<TQueryFnData, TError, TData> {
         if (this.cacheTime == null || this.cacheTime == Duration.zero) {
           _optionalRemove();
         }
+        if (_completer?.isCompleted == false)
+          _completer?.completeError(
+              error ?? "Retry Failed", StackTrace.current);
       },
       onFail: (failureCount, error) {
         _dispatch(Action(ActionType.failed));
@@ -461,8 +477,8 @@ class Query<TQueryFnData, TError, TData> {
       retryDelay: context.options.retryDelay,
     );
 
-    this._future = _retryer!.future;
+    this._completer = _retryer!.completer;
-    return this._future!;
+    return this._completer!.future;
   }
 
   void _dispatch(Action<TData, TError> action) {

packages/fl_query/lib/src/core/query_client.dart

@@ -86,8 +86,7 @@ class QueryClient {
   // }
 
   TData? getQueryData<TData>(
-    QueryKey,
+    QueryKey queryKey, [
-    queryKey, [
     QueryFilters? filters,
   ]) {
     return _queryCache
@@ -357,13 +356,14 @@ class QueryClient {
     }
   }
 
-  getMutationDefaults() {}
+  // getMutationDefaults() {}
-  setMutationDefaults() {}
+  // setMutationDefaults() {}
+  // getMutationCache() {}
+
   QueryCache getQueryCache() {
     return _queryCache;
   }
 
-  getMutationCache() {}
   void clear() {
     _queryCache.clear();
     // _mutationCache.clear();

packages/fl_query/lib/src/core/retryer.dart

@@ -43,7 +43,8 @@ class Retryer<TData, TError> {
   late void Function() cancelRetry;
   late void Function() continueRetry;
   late void Function() continueFn;
-  late Future<TData> future;
+  // late Future<TData> future;
+  late Completer<TData> completer;
   int failureCount;
   bool isPaused;
   bool isResolved;
@@ -92,9 +93,9 @@ class Retryer<TData, TError> {
 
     this.continueFn = () => continueFn?.call();
 
-    Completer<TData> completer = Completer<TData>();
+    completer = Completer<TData>();
 
-    this.future = completer.future;
+    // this.future = completer.future;
 
     resolve(value) {
       if (!this.isResolved) {
@@ -115,11 +116,11 @@ class Retryer<TData, TError> {
     }
 
     pause() {
-      Completer completer = Completer();
+      Completer pauseCompleter = Completer();
-      if (!completer.isCompleted) continueFn = completer.complete;
+      if (!pauseCompleter.isCompleted) continueFn = pauseCompleter.complete;
       this.isPaused = true;
       onPause?.call();
-      return completer.future.then((val) {
+      return pauseCompleter.future.then((val) {
         continueFn = null;
         this.isPaused = false;
         onContinue?.call();

packages/fl_query/lib/src/core/subscribable.dart

@@ -1,4 +1,4 @@
-import 'package:flutter/material.dart';
+import 'package:meta/meta.dart';
 
 abstract class Subscribable<TListener extends Function> {
   @protected

packages/fl_query/lib/src/core/utils.dart

@@ -2,16 +2,6 @@ import 'package:fl_query/src/core/models.dart';
 import 'package:fl_query/src/core/query.dart';
 import 'package:fl_query/src/core/query_key.dart';
 
-/**
- * Schedules a microtask.
- * This can be useful to schedule state updates after rendering.
- */
-void scheduleMicrotask(void Function(dynamic val) callback) {
-  Future.value()
-      .then(callback)
-      .catchError((error) => Future.delayed(Duration.zero, () => throw error));
-}
-
 /// Default query keys hash function.
 /// Dummy function just to fill the gaps for original react-query like
 /// function body signatures
@@ -113,15 +103,15 @@ T replaceEqualDeep<T>(T a, T b) {
 
   bool isList = (a is Iterable && b is Iterable);
   if (isList || (a is Map && b is Map)) {
-    var aSize = isList ? a.length : (a as Map).keys.length;
+    int aSize = isList ? a.length : (a as Map).keys.length;
-    var bItems = isList ? b : (b as Map).keys;
+    List bItems = (isList ? b : (b as Map).keys).toList();
-    var bSize = bItems.length;
+    int bSize = bItems.length;
     var copy;
 
     int equalItems = 0;
 
     for (int i = 0; i < bSize; i++) {
-      var key = isList ? i : (bItems as Map)[i];
+      var key = isList ? i : bItems[i];
       if (isList) {
         copy ??= [];
         copy[key] = replaceEqualDeep((a as List)[key], (b as List)[key]);

packages/fl_query/pubspec.yaml

@@ -5,11 +5,11 @@ homepage: https://github.com/KRTirtho/fl-query
 
 environment:
   sdk: ">=2.15.1 <3.0.0"
-  flutter: ">=1.17.0"
+  # flutter: ">=1.17.0"
 
 dependencies:
-  flutter:
+  # flutter:
-    sdk: flutter
+  #   sdk: flutter
   meta: ^1.3.0
   path: ^1.8.0
   hive: ^2.0.0
@@ -27,4 +27,4 @@ dev_dependencies:
   lints: ^1.0.1
 
 # The following section is specific to Flutter.
-flutter:
+# flutter: