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chore(deps): update dependency dart to v3 (#346)
[](https://renovatebot.com) This PR contains the following updates: | Package | Update | Change | |---|---|---| | [dart](https://dart.dev/) ([source](https://togithub.com/dart-lang/sdk)) | major | `>=2.12.0 <3.0.0` -> `<4.0.0` | --- ### Release Notes <details> <summary>dart-lang/sdk (dart)</summary> ### [`v3.1.0`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#310) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.7...3.1.0) ##### Libraries ##### `dart:async` - **Breaking change** [#​52334][]: - Added the `interface` modifier to purely abstract classes: `MultiStreamController`, `StreamConsumer`, `StreamIterator` and `StreamTransformer`. As a result, these types can only be implemented, not extended or mixed in. [#​52334]: https://togithub.com/dart-lang/sdk/issues/52334 ##### `dart:core` - `Uri.base` on native platforms now respects `IOOverrides` overriding current directory ([#​39796][]). [#​39796]: https://togithub.com/dart-lang/sdk/issues/39796 ##### `dart:io` - **Breaking change** [#​51486][]: - Added `sameSite` to the `Cookie` class. - Added class `SameSite`. - **Breaking change** [#​52027][]: `FileSystemEvent` is [`sealed`](https://dart.dev/language/class-modifiers#sealed). This means that `FileSystemEvent` cannot be extended or implemented. - Added a deprecation warning when `Platform` is instantiated. - Added `Platform.lineTerminator` which exposes the character or characters that the operating system uses to separate lines of text, e.g., `"\r\n"` on Windows. [#​51486]: https://togithub.com/dart-lang/sdk/issues/51486 [#​52027]: https://togithub.com/dart-lang/sdk/issues/52027 ##### `dart:js_interop` - **Object literal constructors**: `ObjectLiteral` is removed from `dart:js_interop`. It's no longer needed in order to declare an object literal constructor with inline classes. As long as an external constructor has at least one named parameter, it'll be treated as an object literal constructor. If you want to create an object literal with no named members, use `{}.jsify()`. ##### Other libraries ##### `package:js` - **Breaking change to `@staticInterop` and `external` extension members**: `external` `@staticInterop` members and `external` extension members can no longer be used as tear-offs. Declare a closure or a non-`external` method that calls these members, and use that instead. - **Breaking change to `@staticInterop` and `external` extension members**: `external` `@staticInterop` members and `external` extension members will generate slightly different JS code for methods that have optional parameters. Whereas before, the JS code passed in the default value for missing optionals, it will now pass in only the provided members. This aligns with how JS parameters work, where omitted parameters are actually omitted. For example, calling `external void foo([int a, int b])` as `foo(0)` will now result in `foo(0)`, and not `foo(0, null)`. ### [`v3.0.7`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#307---2023-07-26) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.6...3.0.7) This is a patch release that: - Fixes a bug in dart2js which would cause certain uses of records to lead to bad codegen causing a `TypeError` or `NoSuchMethodError` to be thrown at runtime (issue [#​53001]). [#​53001]: https://togithub.com/dart-lang/sdk/issues/53001 ### [`v3.0.6`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#306---2023-07-12) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.5...3.0.6) This is a patch release that: - Fixes a flow in flow analysis that causes it to sometimes ignore destructuring assignments (issue [#​52767]). - Fixes an infinite loop in some web development compiles that include `is` or `as` expressions involving record types with named fields (issue [#​52869]). - Fixes a memory leak in Dart analyzer's file-watching (issue [#​52791]). - Fixes a memory leak of file system watcher related data structures (issue [#​52793]). [#​52767]: https://togithub.com/dart-lang/sdk/issues/52767 [#​52869]: https://togithub.com/dart-lang/sdk/issues/52869 [#​52791]: https://togithub.com/dart-lang/sdk/issues/52791 [#​52793]: https://togithub.com/dart-lang/sdk/issues/52793 ### [`v3.0.5`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#305---2023-06-14) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.4...3.0.5) This is a patch release that: - Fixes a bad cast in the frontend which can manifest as a crash in the dart2js `ListFactorySpecializer` during Flutter web builds (issue [#​52403]). [#​52403]: https://togithub.com/dart-lang/sdk/issues/52403 ### [`v3.0.4`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#304---2023-06-07) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.3...3.0.4) This is a patch release that: - `dart format` now handles formatting nullable record types with no fields (dart_style issue [#​1224]). - Fixes error when using records when targeting the web in development mode (issue [#​52480]). [#​1224]: https://togithub.com/dart-lang/dart_style/issues/1224 [#​52480]: https://togithub.com/dart-lang/sdk/issues/52480 ### [`v3.0.3`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#303---2023-02-07) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.2...3.0.3) This is a patch release that: - Fixes an AOT compiler crash when generating an implicit getter returning an unboxed record (issue [#​52449]). - Fixes a situation in which variables appearing in multiple branches of an or-pattern might be erroneously reported as being mismatched (issue [#​52373]). - Adds missing `interface` modifiers on the purely abstract classes `MultiStreamController`, `StreamConsumer`, `StreamIterator` and `StreamTransformer` (issue [#​52334]). - Fixes an error during debugging when `InternetAddress.tryParse` is used (issue [#​52423]). - Fixes a VM issue causing crashes on hot reload (issue [#​126884]). - Improves linter support (issue [#​4195]). - Fixes an issue in variable patterns preventing users from expressing a pattern match using a variable or wildcard pattern with a nullable record type (issue [#​52439]). - Updates warnings and provide instructions for updating the Dart pub cache on Windows (issue [#​52386]). [#​52373]: https://togithub.com/dart-lang/sdk/issues/52373 [#​52334]: https://togithub.com/dart-lang/sdk/issues/52334 [#​52423]: https://togithub.com/dart-lang/sdk/issues/52423 [#​126884]: https://togithub.com/flutter/flutter/issues/126884 [#​4195]: https://togithub.com/dart-lang/linter/issues/4195 [#​52439]: https://togithub.com/dart-lang/sdk/issues/52439 [#​52449]: https://togithub.com/dart-lang/sdk/issues/52449 [#​52386]: https://togithub.com/dart-lang/sdk/issues/52386 ### [`v3.0.2`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#302---2023-05-24) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.1...3.0.2) This is a patch release that: - Fixes a dart2js crash when using a switch case expression on a record where the fields don't match the cases (issue [#​52438]). - Add class modifier chips on class and mixin pages generated with `dart doc` (issue [#​3392]). - Fixes a situation causing the parser to fail resulting in an infinite loop leading to higher memory usage (issue [#​52352]). - Add clear errors when mixing inheritance in pre and post Dart 3 libraries (issue: [#​52078]). [#​52438]: https://togithub.com/dart-lang/sdk/issues/52438 [#​3392]: https://togithub.com/dart-lang/dartdoc/issues/3392 [#​52352]: https://togithub.com/dart-lang/sdk/issues/52352 [#​52078]: https://togithub.com/dart-lang/sdk/issues/52078 ### [`v3.0.1`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#301---2023-05-17) [Compare Source](https://togithub.com/dart-lang/sdk/compare/3.0.0...3.0.1) This is a patch release that: - Fixes a compiler crash involving redirecting factories and FFI (issue [#​124369]). - Fixes a dart2js crash when using a combination of local functions, generics, and records (issue [#​51899]). - Fixes incorrect error using a `void` in a switch case expression (issue [#​52191]). - Fixes a false error when using in switch case expressions when the switch refers to a private getter (issue [#​52041]). - Prevent the use of `when` and `as` as variable names in patterns (issue [#​52260]). - Fixes an inconsistency in type promotion between the analyzer and VM (issue [#​52241]). - Improve performance on functions with many parameters (issue [#​1212]). [#​124369]: https://togithub.com/flutter/flutter/issues/124369 [#​51899]: https://togithub.com/dart-lang/sdk/issues/51899 [#​52191]: https://togithub.com/dart-lang/sdk/issues/52191 [#​52041]: https://togithub.com/dart-lang/sdk/issues/52041 [#​52260]: https://togithub.com/dart-lang/sdk/issues/52260 [#​52241]: https://togithub.com/dart-lang/sdk/issues/52241 [#​1212]: https://togithub.com/dart-lang/dart_style/issues/1212 ### [`v3.0.0`](https://togithub.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#300---2023-05-10) [Compare Source](https://togithub.com/dart-lang/sdk/compare/2.19.6...3.0.0) ##### Language Dart 3.0 adds the following features. To use them, set your package's [SDK constraint][language version] lower bound to 3.0 or greater (`sdk: '^3.0.0'`). [language version]: https://dart.dev/guides/language/evolution - **[Records]**: Records are anonymous immutable data structures that let you aggregate multiple values together, similar to [tuples][] in other languages. With records, you can return multiple values from a function, create composite map keys, or use them any other place where you want to bundle a couple of objects together. For example, using a record to return two values: ```dart (double x, double y) geoLocation(String name) { if (name == 'Nairobi') { return (-1.2921, 36.8219); } else { ... } } ``` - **[Pattern matching]**: Expressions build values out of smaller pieces. Conversely, patterns are an expressive tool for decomposing values back into their constituent parts. Patterns can call getters on an object, access elements from a list, pull fields out of a record, etc. For example, we can destructure the record from the previous example like so: ```dart var (lat, long) = geoLocation('Nairobi'); print('Nairobi is at $lat, $long.'); ``` Patterns can also be used in [switch cases]. There, you can destructure values and also test them to see if they have a certain type or value: ```dart switch (object) { case [int a]: print('A list with a single integer element $a'); case ('name', _): print('A two-element record whose first field is "name".'); default: print('Some other object.'); } ``` Also, as you can see, non-empty switch cases no longer need `break;` statements. **Breaking change**: Dart 3.0 interprets [switch cases] as patterns instead of constant expressions. Most constant expressions found in switch cases are valid patterns with the same meaning (named constants, literals, etc.). You may need to tweak a few constant expressions to make them valid. This only affects libraries that have upgraded to language version 3.0. - **[Switch expressions]**: Switch expressions allow you to use patterns and multi-way branching in contexts where a statement isn't allowed: ```dart return TextButton( onPressed: _goPrevious, child: Text(switch (page) { 0 => 'Exit story', 1 => 'First page', _ when page == _lastPage => 'Start over', _ => 'Previous page', }), ); ``` - **[If-case statements and elements]**: A new if construct that matches a value against a pattern and executes the then or else branch depending on whether the pattern matches: ```dart if (json case ['user', var name]) { print('Got user message for user $name.'); } ``` There is also a corresponding [if-case element] that can be used in collection literals. - **[Sealed classes]**: When you mark a type `sealed`, the compiler ensures that switches on values of that type [exhaustively cover] every subtype. This enables you to program in an [algebraic datatype][] style with the compile-time safety you expect: ```dart sealed class Amigo {} class Lucky extends Amigo {} class Dusty extends Amigo {} class Ned extends Amigo {} String lastName(Amigo amigo) => switch (amigo) { Lucky _ => 'Day', Ned _ => 'Nederlander', }; ``` In this last example, the compiler reports an error that the switch doesn't cover the subclass `Dusty`. - **[Class modifiers]**: New modifiers `final`, `interface`, `base`, and `mixin` on `class` and `mixin` declarations let you control how the type can be used. By default, Dart is flexible in that a single class declaration can be used as an interface, a superclass, or even a mixin. This flexibility can make it harder to evolve an API over time without breaking users. We mostly keep the current flexible defaults, but these new modifiers give you finer-grained control over how the type can be used. **Breaking change:** Class declarations from libraries that have been upgraded to Dart 3.0 can no longer be used as mixins by default. If you want the class to be usable as both a class and a mixin, mark it [`mixin class`][mixin class]. If you want it to be used only as a mixin, make it a `mixin` declaration. If you haven't upgraded a class to Dart 3.0, you can still use it as a mixin. - **Breaking change** [#​50902][]: Dart reports a compile-time error if a `continue` statement targets a [label] that is not a loop (`for`, `do` and `while` statements) or a `switch` member. Fix this by changing the `continue` to target a valid labeled statement. - **Breaking change** [language/#​2357][]: Starting in language version 3.0, Dart reports a compile-time error if a colon (`:`) is used as the separator before the default value of an optional named parameter. Fix this by changing the colon (`:`) to an equal sign (`=`). [records]: https://dart.dev/language/records [tuples]: https://en.wikipedia.org/wiki/Tuple [pattern matching]: https://dart.dev/language/patterns [switch cases]: https://dart.dev/language/branches#switch [switch expressions]: https://dart.dev/language/branches#switch-expressions [if-case statements and elements]: https://dart.dev/language/branches#if-case [if-case element]: https://dart.dev/language/collections#control-flow-operators [sealed classes]: https://dart.dev/language/class-modifiers#sealed [exhaustively cover]: https://dart.dev/language/branches#exhaustiveness-checking [algebraic datatype]: https://en.wikipedia.org/wiki/Algebraic_data_type [class modifiers]: https://dart.dev/language/class-modifiers [mixin class]: https://dart.dev/language/mixins#class-mixin-or-mixin-class [#​50902]: https://togithub.com/dart-lang/sdk/issues/50902 [label]: https://dart.dev/language/branches#switch [language/#​2357]: https://togithub.com/dart-lang/language/issues/2357 ##### Libraries ##### General changes - **Breaking Change**: Non-`mixin` classes in the platform libraries can no longer be mixed in, unless they are explicitly marked as `mixin class`. The following existing classes have been made mixin classes: - `Iterable` - `IterableMixin` (now alias for `Iterable`) - `IterableBase` (now alias for `Iterable`) - `ListMixin` - `SetMixin` - `MapMixin` - `LinkedListEntry` - `StringConversionSink` ##### `dart:core` - Added `bool.parse` and `bool.tryParse` static methods. - Added `DateTime.timestamp()` constructor to get current time as UTC. - The type of `RegExpMatch.pattern` is now `RegExp`, not just `Pattern`. - **Breaking change** [#​49529][]: - Removed the deprecated `List` constructor, as it wasn't null safe. Use list literals (e.g. `[]` for an empty list or `<int>[]` for an empty typed list) or [`List.filled`][List.filled]. - Removed the deprecated `onError` argument on [`int.parse`][int.parse], [`double.parse`][double.parse], and [`num.parse`][num.parse]. Use the [`tryParse`][tryParse] method instead. - Removed the deprecated [`proxy`][proxy] and [`Provisional`][Provisional] annotations. The original `proxy` annotation has no effect in Dart 2, and the `Provisional` type and [`provisional`][provisional] constant were only used internally during the Dart 2.0 development process. - Removed the deprecated [`Deprecated.expires`][Deprecated.expires] getter. Use [`Deprecated.message`][Deprecated.message] instead. - Removed the deprecated [`CastError`][CastError] error. Use [`TypeError`][TypeError] instead. - Removed the deprecated [`FallThroughError`][FallThroughError] error. The kind of fall-through previously throwing this error was made a compile-time error in Dart 2.0. - Removed the deprecated [`NullThrownError`][NullThrownError] error. This error is never thrown from null safe code. - Removed the deprecated [`AbstractClassInstantiationError`][AbstractClassInstantiationError] error. It was made a compile-time error to call the constructor of an abstract class in Dart 2.0. - Removed the deprecated [`CyclicInitializationError`][CyclicInitializationError]. Cyclic dependencies are no longer detected at runtime in null safe code. Such code will fail in other ways instead, possibly with a StackOverflowError. - Removed the deprecated [`NoSuchMethodError`][NoSuchMethodError] default constructor. Use the [`NoSuchMethodError.withInvocation`][NoSuchMethodError.withInvocation] named constructor instead. - Removed the deprecated [`BidirectionalIterator`][BidirectionalIterator] class. Existing bidirectional iterators can still work, they just don't have a shared supertype locking them to a specific name for moving backwards. - **Breaking change when migrating code to Dart 3.0**: Some changes to platform libraries only affect code when that code is migrated to language version 3.0. - The `Function` type can no longer be implemented, extended or mixed in. Since Dart 2.0 writing `implements Function` has been allowed for backwards compatibility, but it has not had any effect. In Dart 3.0, the `Function` type is `final` and cannot be subtyped, preventing code from mistakenly assuming it works. - The following declarations can only be implemented, not extended: - `Comparable` - `Exception` - `Iterator` - `Pattern` - `Match` - `RegExp` - `RegExpMatch` - `StackTrace` - `StringSink` None of these declarations contained any implementation to inherit, and are marked as `interface` to signify that they are only intended as interfaces. - The following declarations can no longer be implemented or extended: - `MapEntry` - `OutOfMemoryError` - `StackOverflowError` - `Expando` - `WeakReference` - `Finalizer` The `MapEntry` value class is restricted to enable later optimizations. The remaining classes are tightly coupled to the platform and not intended to be subclassed or implemented. [#​49529]: https://togithub.com/dart-lang/sdk/issues/49529 [`List.filled`]: https://api.dart.dev/stable/2.18.6/dart-core/List/List.filled.html [`int.parse`]: https://api.dart.dev/stable/2.18.4/dart-core/int/parse.html [`double.parse`]: https://api.dart.dev/stable/2.18.4/dart-core/double/parse.html [`num.parse`]: https://api.dart.dev/stable/2.18.4/dart-core/num/parse.html [`tryParse`]: https://api.dart.dev/stable/2.18.4/dart-core/num/tryParse.html [`Deprecated.expires`]: https://api.dart.dev/stable/2.18.4/dart-core/Deprecated/expires.html [`Deprecated.message`]: https://api.dart.dev/stable/2.18.4/dart-core/Deprecated/message.html [`AbstractClassInstantiationError`]: https://api.dart.dev/stable/2.17.4/dart-core/AbstractClassInstantiationError-class.html [`CastError`]: https://api.dart.dev/stable/2.17.4/dart-core/CastError-class.html [`FallThroughError`]: https://api.dart.dev/stable/2.17.4/dart-core/FallThroughError-class.html [`NoSuchMethodError`]: https://api.dart.dev/stable/2.18.4/dart-core/NoSuchMethodError/NoSuchMethodError.html [`NoSuchMethodError.withInvocation`]: https://api.dart.dev/stable/2.18.4/dart-core/NoSuchMethodError/NoSuchMethodError.withInvocation.html [`CyclicInitializationError`]: https://api.dart.dev/dev/2.19.0-430.0.dev/dart-core/CyclicInitializationError-class.html [`Provisional`]: https://api.dart.dev/stable/2.18.4/dart-core/Provisional-class.html [`provisional`]: https://api.dart.dev/stable/2.18.4/dart-core/provisional-constant.html [`proxy`]: https://api.dart.dev/stable/2.18.4/dart-core/proxy-constant.html [`CastError`]: https://api.dart.dev/stable/2.18.3/dart-core/CastError-class.html [`TypeError`]: https://api.dart.dev/stable/2.18.3/dart-core/TypeError-class.html [`FallThroughError`]: https://api.dart.dev/dev/2.19.0-374.0.dev/dart-core/FallThroughError-class.html [`NullThrownError`]: https://api.dart.dev/dev/2.19.0-430.0.dev/dart-core/NullThrownError-class.html [`AbstractClassInstantiationError`]: https://api.dart.dev/stable/2.18.3/dart-core/AbstractClassInstantiationError-class.html [`CyclicInitializationError`]: https://api.dart.dev/dev/2.19.0-430.0.dev/dart-core/CyclicInitializationError-class.html [`BidirectionalIterator`]: https://api.dart.dev/dev/2.19.0-430.0.dev/dart-core/BidirectionalIterator-class.html ##### `dart:async` - Added extension member `wait` on iterables and 2-9 tuples of futures. - **Breaking change** [#​49529][]: - Removed the deprecated [`DeferredLibrary`][DeferredLibrary] class. Use the [`deferred as`][deferred as] import syntax instead. [#​49529]: https://togithub.com/dart-lang/sdk/issues/49529 [`DeferredLibrary`]: https://api.dart.dev/stable/2.18.4/dart-async/DeferredLibrary-class.html [`deferred as`]: https://dart.dev/language/libraries#deferred-loading ##### `dart:collection` - Added extension members `nonNulls`, `firstOrNull`, `lastOrNull`, `singleOrNull`, `elementAtOrNull` and `indexed` on `Iterable`s. Also exported from `dart:core`. - Deprecated the `HasNextIterator` class ([#​50883][]). - **Breaking change when migrating code to Dart 3.0**: Some changes to platform libraries only affect code when it is migrated to language version 3.0. - The following interface can no longer be extended, only implemented: - `Queue` - The following implementation classes can no longer be implemented: - `LinkedList` - `LinkedListEntry` - The following implementation classes can no longer be implemented or extended: - `HasNextIterator` (Also deprecated.) - `HashMap` - `LinkedHashMap` - `HashSet` - `LinkedHashSet` - `DoubleLinkedQueue` - `ListQueue` - `SplayTreeMap` - `SplayTreeSet` [#​50883]: https://togithub.com/dart-lang/sdk/issues/50883 ##### `dart:developer` - **Breaking change** [#​49529][]: - Removed the deprecated [`MAX_USER_TAGS`][MAX_USER_TAGS] constant. Use [`maxUserTags`][maxUserTags] instead. - Callbacks passed to `registerExtension` will be run in the zone from which they are registered. - **Breaking change** [#​50231][]: - Removed the deprecated [`Metrics`][Metrics], [`Metric`][Metric], [`Counter`][Counter], and [`Gauge`][Gauge] classes as they have been broken since Dart 2.0. [#​49529]: https://togithub.com/dart-lang/sdk/issues/49529 [#​50231]: https://togithub.com/dart-lang/sdk/issues/50231 [`MAX_USER_TAGS`]: https://api.dart.dev/stable/2.19.6/dart-developer/UserTag/MAX_USER_TAGS-constant.html [`maxUserTags`]: https://api.dart.dev/beta/2.19.0-255.2.beta/dart-developer/UserTag/maxUserTags-constant.html [`Metrics`]: https://api.dart.dev/stable/2.18.2/dart-developer/Metrics-class.html [`Metric`]: https://api.dart.dev/stable/2.18.2/dart-developer/Metric-class.html [`Counter`]: https://api.dart.dev/stable/2.18.2/dart-developer/Counter-class.html [`Gauge`]: https://api.dart.dev/stable/2.18.2/dart-developer/Gauge-class.html ##### `dart:html` - **Breaking change**: As previously announced, the deprecated `registerElement` and `registerElement2` methods in `Document` and `HtmlDocument` have been removed. See [#​49536](https://togithub.com/dart-lang/sdk/issues/49536) for details. ##### `dart:math` - **Breaking change when migrating code to Dart 3.0**: Some changes to platform libraries only affect code when it is migrated to language version 3.0. - The `Random` interface can only be implemented, not extended. ##### `dart:io` - Added `name` and `signalNumber` to the `ProcessSignal` class. - Deprecate `NetworkInterface.listSupported`. Has always returned true since Dart 2.3. - Finalize `httpEnableTimelineLogging` parameter name transition from `enable` to `enabled`. See [#​43638][]. - Favor IPv4 connections over IPv6 when connecting sockets. See [#​50868]. - **Breaking change** [#​51035][]: - Update `NetworkProfiling` to accommodate new `String` ids that are introduced in vm_service:11.0.0 [#​43638]: https://togithub.com/dart-lang/sdk/issues/43638 [#​50868]: https://togithub.com/dart-lang/sdk/issues/50868 [#​51035]: https://togithub.com/dart-lang/sdk/issues/51035 ##### `dart:js_util` - Added several helper functions to access more JavaScript operators, like `delete` and the `typeof` functionality. - `jsify` is now permissive and has inverse semantics to `dartify`. - `jsify` and `dartify` both handle types they understand natively more efficiently. - Signature of `callMethod` has been aligned with the other methods and now takes `Object` instead of `String`. ##### Tools ##### Observatory - Observatory is no longer served by default and users should instead use Dart DevTools. Users requiring specific functionality in Observatory should set the `--serve-observatory` flag. ##### Web Dev Compiler (DDC) - Removed deprecated command line flags `-k`, `--kernel`, and `--dart-sdk`. - The compile time flag `--nativeNonNullAsserts`, which ensures web library APIs are sound in their nullability, is by default set to true in sound mode. For more information on the flag, see [NATIVE_NULL_ASSERTIONS.md][]. [NATIVE_NULL_ASSERTIONS.md]: https://togithub.com/dart-lang/sdk/blob/main/sdk/lib/html/doc/NATIVE_NULL_ASSERTIONS.md ##### dart2js - The compile time flag `--native-null-assertions`, which ensures web library APIs are sound in their nullability, is by default set to true in sound mode, unless `-O3` or higher is passed, in which case they are not checked. For more information on the flag, see [NATIVE_NULL_ASSERTIONS.md][]. [NATIVE_NULL_ASSERTIONS.md]: https://togithub.com/dart-lang/sdk/blob/main/sdk/lib/html/doc/NATIVE_NULL_ASSERTIONS.md ##### Dart2js - Cleanup related to [#​46100](https://togithub.com/dart-lang/sdk/issues/46100): the internal dart2js snapshot fails unless it is called from a supported interface, such as `dart compile js`, `flutter build`, or `build_web_compilers`. This is not expected to be a visible change. ##### Formatter - Format `sync*` and `async*` functions with `=>` bodies. - Don't split after `<` in collection literals. - Better indentation of multiline function types inside type argument lists. - Fix bug where parameter metadata wouldn't always split when it should. ##### Analyzer - Most static analysis "hints" are converted to be "warnings," and any remaining hints are intended to be converted soon after the Dart 3.0 release. This means that any (previously) hints reported by `dart analyze` are now considered "fatal" (will result in a non-zero exit code). The previous behavior, where such hints (now warnings) are not fatal, can be achieved by using the `--no-fatal-warnings` flag. This behavior can also be altered, on a code-by-code basis, by [changing the severity of rules] in an analysis options file. - Add static enforcement of the SDK-only `@Since` annotation. When code in a package uses a Dart SDK element annotated with `@Since`, analyzer will report a warning if the package's [Dart SDK constraint] allows versions of Dart which don't include that element. - Protects the Dart Analysis Server against extreme memory usage by limiting the number of plugins per analysis context to 1. (issue \[[#​50981](https://togithub.com/dart-lang/sdk/issues/50981)]\[]). [changing the severity of rules]: https://dart.dev/tools/analysis#changing-the-severity-of-rules [Dart SDK constraint]: https://dart.dev/tools/pub/pubspec#sdk-constraints ##### Linter Updates the Linter to `1.35.0`, which includes changes that - add new lints: - `implicit_reopen` - `unnecessary_breaks` - `type_literal_in_constant_pattern` - `invalid_case_patterns` - update existing lints to support patterns and class modifiers - remove support for: - `enable_null_safety` - `invariant_booleans` - `prefer_bool_in_asserts` - `prefer_equal_for_default_values` - `super_goes_last` - fix `unnecessary_parenthesis` false-positives with null-aware expressions. - fix `void_checks` to allow assignments of `Future<dynamic>?` to parameters typed `FutureOr<void>?`. - fix `use_build_context_synchronously` in if conditions. - fix a false positive for `avoid_private_typedef_functions` with generalized type aliases. - update `unnecessary_parenthesis` to detect some doubled parens. - update `void_checks` to allow returning `Never` as void. - update `no_adjacent_strings_in_list` to support set literals and for- and if-elements. - update `avoid_types_as_parameter_names` to handle type variables. - update `avoid_positional_boolean_parameters` to handle typedefs. - update `avoid_redundant_argument_values` to check parameters of redirecting constructors. - improve performance for `prefer_const_literals_to_create_immutables`. - update `use_build_context_synchronously` to check context properties. - improve `unnecessary_parenthesis` support for property accesses and method invocations. - update `unnecessary_parenthesis` to allow parentheses in more null-aware cascade contexts. - update `unreachable_from_main` to track static elements. - update `unnecessary_null_checks` to not report on arguments passed to `Future.value` or `Completer.complete`. - mark `always_use_package_imports` and `prefer_relative_imports` as incompatible rules. - update `only_throw_errors` to not report on `Never`-typed expressions. - update `unnecessary_lambdas` to not report with `late final` variables. - update `avoid_function_literals_in_foreach_calls` to not report with nullable- typed targets. - add new lint: `deprecated_member_use_from_same_package` which replaces the soft-deprecated analyzer hint of the same name. - update `public_member_api_docs` to not require docs on enum constructors. - update `prefer_void_to_null` to not report on as-expressions. ##### Migration tool removal The null safety migration tool (`dart migrate`) has been removed. If you still have code which needs to be migrated to null safety, please run `dart migrate` using Dart version 2.19, before upgrading to Dart version 3.0. ##### Pub - To preserve compatibility with null-safe code pre Dart 3, Pub will interpret a language constraint indicating a language version of `2.12` or higher and an upper bound of `<3.0.0` as `<4.0.0`. For example `>=2.19.2 <3.0.0` will be interpreted as `>=2.19.2 <4.0.0`. - `dart pub publish` will no longer warn about `dependency_overrides`. Dependency overrides only take effect in the root package of a resolution. - `dart pub token add` now verifies that the given token is valid for including in a header according to [RFC 6750 section 2.1](https://www.rfc-editor.org/rfc/rfc6750#section-2.1). This means they must contain only the characters: `^[a-zA-Z0-9._~+/=-]+$`. Before a failure would happen when attempting to send the authorization header. - `dart pub get` and related commands will now by default also update the dependencies in the `example` folder (if it exists). Use `--no-example` to avoid this. - On Windows the `PUB_CACHE` has moved to `%LOCALAPPDATA%`, since Dart 2.8 the `PUB_CACHE` has been created in `%LOCALAPPDATA%` when one wasn't present. Hence, this only affects users with a `PUB_CACHE` created by Dart 2.7 or earlier. If you have `path/to/.pub-cache/bin` in `PATH` you may need to update your `PATH`. </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/dooboolab-community/flutter_calendar_carousel). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi41Ni4wIiwidXBkYXRlZEluVmVyIjoiMzYuNTYuMCIsInRhcmdldEJyYW5jaCI6Im1haW4ifQ==--> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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