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chore(deps): update dependency dart to v3 #51

Open renovate[bot] opened 1 year ago

renovate[bot] commented 1 year ago

This PR contains the following updates:

Package Update Change
dart (source) major >=2.7.0 <3.0.0 -> <4.0.0

Release Notes

dart-lang/sdk (dart) ### [`v3.5.4`](https://redirect.github.com/dart-lang/sdk/compare/3.5.3...3.5.4) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.5.3...3.5.4) ### [`v3.5.3`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#353---2024-09-11) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.5.2...3.5.3) - Fixes an issue with the DevTools Memory tool causing OOMs. and an issue resulting in a missing tab bar when DevTools is embedded in IntelliJ and Android Studio (issue[#​56607][]). - Fixes an issue with the DevTools release notes showing each time DevTools is opened instead of only the first time (issue[#​56607][]). - Fixes an issue resulting in a missing tab bar when DevTools is embedded in IntelliJ and Android Studio (issue[#​56607][]). [#​56607]: https://redirect.github.com/dart-lang/sdk/issues/56607 ### [`v3.5.2`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#352---2024-08-28) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.5.1...3.5.2) - Fixes a bug where `ZLibDecoder` would incorrectly attempt to decompress data past the end of the zlib footer (issue [#​56481][]). - Fixes issue where running `dart` from `PATH` could result in some commands not working as expected (issues [#​56080][], [#​56306][], [#​56499][]). - Fixes analysis server plugins not receiving `setContextRoots` requests or being provided incorrect context roots in multi-package workspaces (issue [#​56475][]). [#​56481]: https://redirect.github.com/dart-lang/sdk/issues/56481 [#​56080]: https://redirect.github.com/dart-lang/sdk/issues/56080 [#​56306]: https://redirect.github.com/dart-lang/sdk/issues/56306 [#​56499]: https://redirect.github.com/dart-lang/sdk/issues/56499 [#​56475]: https://redirect.github.com/dart-lang/sdk/issues/56475 ### [`v3.5.1`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#351---2024-08-14) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.5.0...3.5.1) - Fixes resolving `include:` in `analysis_options.yaml` file in a nested folder in the workspace (issue[#​56464][]). - Fixes source maps generated by `dart compile wasm` when optimizations are enabled (issue [#​56423][]). - Fixes a bug in the `dart2wasm` compiler in unsound `-O3` / `-O4` modes where a implicit setter for a field of generic type will store `null` instead of the field value (issue [#​56374][]). - Fixes a bug in the `dart2wasm` compiler that can trigger in certain situations when using partial instantiations of generic tear-offs (constructors or static methods) in constant expressions (issue [#​56440][]). - The algorithm for computing the standard upper bound of two types, also known is UP, is provided the missing implementation for `StructuralParameterType` objects. In some corner cases cases the lacking implementation resulted in a crash of the compiler (issue [#​56457][]). [#​56464]: https://redirect.github.com/dart-lang/sdk/issues/56464 [#​56423]: https://redirect.github.com/dart-lang/sdk/issues/56423 [#​56374]: https://redirect.github.com/dart-lang/sdk/issues/56374 [#​56440]: https://redirect.github.com/dart-lang/sdk/issues/56440 [#​56457]: https://redirect.github.com/dart-lang/sdk/issues/56457 ### [`v3.5.0`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#350---2024-08-06) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.4.4...3.5.0) ##### Language - **Breaking Change** [#​55418][]: The context used by the compiler to perform type inference on the operand of an `await` expression has been changed to match the behavior of the analyzer. This change is not expected to make any difference in practice. - **Breaking Change** [#​55436][]: The context used by the compiler to perform type inference on the right hand side of an "if-null" expression (`e1 ?? e2`) has been changed to match the behavior of the analyzer. change is expected to have low impact on real-world code. But in principle it could cause compile-time errors or changes in runtime behavior by changing inferred types. The old behavior can be restored by supplying explicit types. [#​55418]: https://redirect.github.com/dart-lang/sdk/issues/55418 [#​55436]: https://redirect.github.com/dart-lang/sdk/issues/55436 ##### Libraries ##### `dart:core` - **Breaking Change** [#​44876][]: `DateTime` on the web platform now stores microseconds. The web implementation is now practically compatible with the native implementation, where it is possible to round-trip a timestamp in microseconds through a `DateTime` value without rounding the lower digits. This change might be breaking for apps that rely in some way on the `.microsecond` component always being zero, for example, expecting only three fractional second digits in the `toString()` representation. Small discrepancies in arithmetic due to rounding of web integers may still occur for extreme values, (1) `microsecondsSinceEpoch` outside the safe range, corresponding to dates with a year outside of 1685..2255, and (2) arithmetic (`add`, `subtract`, `difference`) where the `Duration` argument or result exceeds 570 years. [#​44876]: https://redirect.github.com/dart-lang/sdk/issues/44876 ##### `dart:io` - **Breaking Change** [#​55786][]: `SecurityContext` is now `final`. This means that `SecurityContext` can no longer be subclassed. `SecurityContext` subclasses were never able to interoperate with other parts of `dart:io`. - A `ConnectionTask` can now be created using an existing `Future`. Fixes [#​55562]. [#​55786]: https://redirect.github.com/dart-lang/sdk/issues/55786 [#​55562]: https://redirect.github.com/dart-lang/sdk/issues/55562 ##### `dart:typed_data` - **Breaking Change** [#​53785][]: The unmodifiable view classes for typed data have been removed. These classes were deprecated in Dart 3.4. To create an unmodifiable view of a typed-data object, use the `asUnmodifiableView()` methods added in Dart 3.3. - Added superinterface `TypedDataList` to typed data lists, implementing both `List` and `TypedData`. Allows abstracting over all such lists without losing access to either the `List` or the `TypedData` members. A `ByteData` is still only a `TypedData`, not a list. [#​53785]: https://redirect.github.com/dart-lang/sdk/issues/53785 ##### `dart:js_interop` - **Breaking Change** [#​55508][]: `importModule` now accepts a `JSAny` instead of a `String` to support other JS values as well, like `TrustedScriptURL`s. - **Breaking Change** [#​55267][]: `isTruthy` and `not` now return `JSBoolean` instead of `bool` to be consistent with the other operators. - **Breaking Change** `ExternalDartReference` no longer implements `Object`. `ExternalDartReference` now accepts a type parameter `T` with a bound of `Object?` to capture the type of the Dart object that is externalized. `ExternalDartReferenceToObject.toDartObject` now returns a `T`. `ExternalDartReferenceToObject` and `ObjectToExternalDartReference` are now extensions on `T` and `ExternalDartReference`, respectively, where `T extends Object?`. See [#​55342][] and [#​55536][] for more details. - Fixed some consistency issues with `Function.toJS` across all compilers. Specifically, calling `Function.toJS` on the same function gives you a new JS function (see issue [#​55515][]), the maximum number of arguments that are passed to the JS function is determined by the static type of the Dart function, and extra arguments are dropped when passed to the JS function in all compilers (see [#​48186][]). [#​55508]: https://redirect.github.com/dart-lang/sdk/issues/55508 [#​55267]: https://redirect.github.com/dart-lang/sdk/issues/55267 [#​55342]: https://redirect.github.com/dart-lang/sdk/issues/55342 [#​55536]: https://redirect.github.com/dart-lang/sdk/issues/55536 [#​55515]: https://redirect.github.com/dart-lang/sdk/issues/55515 [#​48186]: https://redirect.github.com/dart-lang/sdk/issues/48186 ##### Tools ##### Analyzer - Add the [`unintended_html_in_doc_comment`][unintended_html_in_doc_comment] lint rule. - Add the [`invalid_runtime_check_with_js_interop_types`][invalid_runtime_check_with_js_interop_types] lint rule. - Add the [`document_ignores`][document_ignores] lint rule. - Add quick fixes for more than 70 diagnostics. - The "Add missing switch cases" quick fix now adds multiple cases, such that the switch becomes exhaustive. - The "Remove const" quick fix now adds `const` keywords to child nodes, where appropriate. [`unintended_html_in_doc_comment`]: https://dart.dev/lints/unintended_html_in_doc_comment [`invalid_runtime_check_with_js_interop_types`]: https://dart.dev/lints/invalid_runtime_check_with_js_interop_types [`document_ignores`]: https://dart.dev/lints/document_ignores ##### Pub - New flag `dart pub downgrade --tighten` to restrict lower bounds of dependencies' constraints to the minimum that can be resolved. ##### Dart Runtime - The Dart VM only executes sound null safe code, running of unsound null safe code using the option `--no-sound-null-safety` has been removed. - `Dart_NewListOf` and `Dart_IsLegacyType` functions are removed from Dart C API. - `Dart_DefaultCanonicalizeUrl` is removed from the Dart C API. ### [`v3.4.4`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#344---2024-06-12) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.4.3...3.4.4) This is a patch release that: - Fixes an issue where pub would crash when failing to fetch advisories from the server. (issue [pub#4269]). - Fixes an issue where `const bool.fromEnvironment('dart.library.ffi')` is true and conditional import condition `dart.library.ffi` is true in dart2wasm. (issue [#​55948]). - Fixes an issue where FFI calls with variadic arguments on MacOS Arm64 would mangle the arguments. (issue [#​55943]). [pub#4269]: https://redirect.github.com/dart-lang/pub/issues/4269 [#​55948]: https://redirect.github.com/dart-lang/sdk/issues/55948 [#​55943]: https://redirect.github.com/dart-lang/sdk/issues/55943 ### [`v3.4.3`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#343---2024-06-05) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.4.2...3.4.3) This is a patch release that: - Fixes an issue where `DART_VM_OPTIONS` were not correctly parsed for standalone Dart executables created with `dart compile exe` (issue [#​55818]). - Fixes a bug in dart2wasm that can result in a runtime error that says `array.new_fixed()` has a constant larger than 10000 (issue [#​55873]). - Adds support for `--enable-experiment` flag to `dart compile` wasm (issue [#​55894]). - Fixes an issue in dart2wasm compiler that can result in incorrect nullability of type parameter (see [#​55895]). - Disallows `dart:ffi` imports in user code in dart2wasm (e.g. issue \[[#​53910](https://redirect.github.com/dart-lang/sdk/issues/53910)]) as dart2wasm's currently only supports a small subset of `dart:ffi` (issue [#​55890]). [#​55818]: https://redirect.github.com/dart-lang/sdk/issues/55818 [#​55873]: https://redirect.github.com/dart-lang/sdk/issues/55873 [#​55894]: https://redirect.github.com/dart-lang/sdk/issues/55894 [#​55895]: https://redirect.github.com/dart-lang/sdk/issues/55895 [#​55910]: https://redirect.github.com/dart-lang/sdk/issues/53910 [#​55890]: https://redirect.github.com/dart-lang/sdk/issues/55890 ### [`v3.4.2`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#342---2024-05-29) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.4.1...3.4.2) This is a patch release that: - Marks `dart compile wasm` as no longer experimental. - Fixes two bugs in exception handling in `async` functions in dart2wasm (issues [#​55347], [#​55457]). - Fixes restoration of `this` variable in `sync*` and `async` functions in dart2wasm. - Implements missing control flow constructs (exceptions, switch/case with yields) in `sync*` in dart2wasm (issues [#​51342], [#​51343]). - Fixes a bug dart2wasm compiler that surfaces as a compiler crash when indexing lists where the compiler proofs the list to be constant and the index is out-of-bounds (issue [#​55817]). [#​55347]: https://redirect.github.com/dart-lang/sdk/issues/55347 [#​55457]: https://redirect.github.com/dart-lang/sdk/issues/55457 [#​51342]: https://redirect.github.com/dart-lang/sdk/issues/51342 [#​51343]: https://redirect.github.com/dart-lang/sdk/issues/51343 [#​55817]: https://redirect.github.com/dart-lang/sdk/issues/55817 ### [`v3.4.1`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#341---2024-05-22) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.4.0...3.4.1) This is a patch release that: - Fixes a bug in the CFE which could manifest as compilation errors of Flutter web apps when compiled with dart2wasm (issue [#​55714]). - Fixes a bug in the pub client, such that `dart run` will not interfere with Flutter l10n (at least for most cases) (issue [#​55758]). [#​55714]: https://redirect.github.com/dart-lang/sdk/issues/55714 [#​55758]: https://redirect.github.com/dart-lang/sdk/issues/55758 ### [`v3.4.0`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#340---2024-05-14) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.3.4...3.4.0) ##### Language Dart 3.4 makes improvements to the type analysis of conditional expressions (`e1 ? e2 : e3`), if-null expressions (`e1 ?? e2`), if-null assignments (`e1 ??= e2`), and switch expressions (`switch (e) { p1 => e1, ... }`). To take advantage of these improvements, set your package's [SDK constraint][language version] lower bound to 3.4 or greater (`sdk: '^3.4.0'`). [language version]: https://dart.dev/guides/language/evolution - **Breaking Change** [#​54640][]: The pattern context type schema for cast patterns has been changed from `Object?` to `_` (the unknown type), to align with the specification. This change is not expected to make any difference in practice. - **Breaking Change** [#​54828][]: The type schema used by the compiler front end to perform type inference on the operand of a null-aware spread operator (`...?`) in map and set literals has been made nullable, to match what currently happens in list literals. This makes the compiler front end behavior consistent with that of the analyzer. This change is expected to be very low impact. [#​54640]: https://redirect.github.com/dart-lang/sdk/issues/54640 [#​54828]: https://redirect.github.com/dart-lang/sdk/issues/54828 ##### Libraries ##### `dart:async` - Added option for `ParallelWaitError` to get some meta-information that it can expose in its `toString`, and the `Iterable.wait` and `(Future,...,Future).wait` extension methods now provide that information. Should make a `ParallelWaitError` easier to log. ##### `dart:cli` - **Breaking change** \[[#​52121](https://redirect.github.com/dart-lang/sdk/issues/52121)]\[]: `waitFor` is removed in 3.4. ##### `dart:ffi` - Added `Struct.create` and `Union.create` to create struct and union views of the sequence of bytes stored in a subtype of `TypedData`. ##### `dart:io` - **Breaking change** [#​53863][]: `Stdout` has a new field `lineTerminator`, which allows developers to control the line ending used by `stdout` and `stderr`. Classes that `implement Stdout` must define the `lineTerminator` field. The default semantics of `stdout` and `stderr` are not changed. - Deprecates `FileSystemDeleteEvent.isDirectory`, which always returns `false`. [#​53863]: https://redirect.github.com/dart-lang/sdk/issues/53863 ##### `dart:js_interop` - Fixes an issue with several comparison operators in `JSAnyOperatorExtension` that were declared to return `JSBoolean` but really returned `bool`. This led to runtime errors when trying to use the return values. The implementation now returns a `JSBoolean` to align with the interface. See issue [#​55024] for more details. - Added `ExternalDartReference` and related conversion functions `toExternalReference` and `toDartObject`. This is a faster alternative to `JSBoxedDartObject`, but with fewer safety guarantees and fewer interoperability capabilities. See [#​55187] for more details. - On dart2wasm, `JSBoxedDartObject` now is an actual JS object that wraps the opaque Dart value instead of only externalizing the value. Like the JS backends, you'll now get a more useful error when trying to use it in another Dart runtime. - Added `isA` helper to make type checks easier with interop types. See [#​54138][] for more details. [#​54138]: https://redirect.github.com/dart-lang/sdk/issues/54138 [#​55024]: https://redirect.github.com/dart-lang/sdk/issues/55024 [#​55187]: https://redirect.github.com/dart-lang/sdk/issues/55187 ##### `dart:typed_data` - **BREAKING CHANGE** [#​53218][] [#​53785][]: The unmodifiable view classes for typed data are deprecated. To create an unmodifiable view of a typed-data object, use the `asUnmodifiableView()` methods added in Dart 3.3: ```dart Uint8List data = ...; final readOnlyView = data.asUnmodifiableView(); // readOnlyView has type Uint8List, and throws if attempted modified. ``` The reason for this change is to allow more flexibility in the implementation of typed data, so the native and web platforms can use different strategies to ensure that typed data has good performance. The deprecated types will be removed in Dart 3.5. [#​53218]: https://redirect.github.com/dart-lang/sdk/issues/53218 [#​53785]: https://redirect.github.com/dart-lang/sdk/issues/53785 ##### Tools ##### Analyzer - Improved code completion. Fixed over 50% of completion correctness bugs, tagged `analyzer-completion-correctness` in the [issue tracker][analyzer-completion-correction-issues]. - Support for new annotations introduced in version 1.14.0 of the [meta] package. - Support for the [`@doNotSubmit`][@​doNotSubmit] annotation, noting that any usage of an annotated member should not be submitted to source control. - Support for the [`@mustBeConst`][@​mustBeConst] annotation, which indicates that an annotated parameter only accepts constant arguments. [analyzer-completion-correction-issues]: https://redirect.github.com/dart-lang/sdk/labels/analyzer-completion-correctness [meta]: https://pub.dev/packages/meta [`@doNotSubmit`]: https://pub.dev/documentation/meta/latest/meta/doNotSubmit-constant.html [`@mustBeConst`]: https://pub.dev/documentation/meta/latest/meta/mustBeConst-constant.html ##### Linter - Added the [`unnecessary_library_name`][unnecessary_library_name] lint. - Added the [`missing_code_block_language_in_doc_comment`][missing_code_block_language_in_doc_comment] lint. [`unnecessary_library_name`]: https://dart.dev/lints/unnecessary_library_name [`missing_code_block_language_in_doc_comment`]: https://dart.dev/lints/missing_code_block_language_in_doc_comment ##### Compilers - The compilation environment will no longer pretend to contain entries with value `""` for all `dart.library.foo` strings, where `dart:foo` is not an available library. Instead there will only be entries for the available libraries, like `dart.library.core`, where the value was, and still is, `"true"`. This should have no effect on `const bool.fromEnvironment(...)` or `const String.fromEnvironment(...)` without a `defaultValue` argument, an argument which was always ignored previously. It changes the behavior of `const bool.hasEnvironment(...)` on such an input, away from always being `true` and therefore useless. ##### DevTools - Updated DevTools to version 2.33.0 from 2.31.1. To learn more, check out the release notes for versions [2.32.0][devtools-2-32-0] and [2.33.0][devtools-2-33-0]. [devtools-2-32-0]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.32.0 [devtools-2-33-0]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.33.0 ##### Pub - Dependency resolution and `dart pub outdated` will now surface if a dependency is affected by a security advisory, unless the advisory is listed under a `ignored_advisories` section in the `pubspec.yaml` file. To learn more about pub's support for security advisories, visit [dart.dev/go/pub-security-advisories][pub-security-advisories]. - `path`-dependencies inside `git`-dependencies are now resolved relative to the git repo. - All `dart pub` commands can now be run from any subdirectory of a project. Pub will find the first parent directory with a `pubspec.yaml` and operate relative it. - New command `dart pub unpack` that downloads a package from pub.dev and extracts it to a subfolder of the current directory. This can be useful for inspecting the code, or playing with examples. [pub-security-advisories]: https://dart.dev/go/pub-security-advisories ##### Dart Runtime - Dart VM flags and options can now be provided to any executable generated using `dart compile exe` via the `DART_VM_OPTIONS` environment variable. `DART_VM_OPTIONS` should be set to a list of comma-separated flags and options with no whitespace. Options that allow for multiple values to be provided as comma-separated values are not supported (e.g., `--timeline-streams=Dart,GC,Compiler`). Example of a valid `DART_VM_OPTIONS` environment variable: ```bash DART_VM_OPTIONS=--random_seed=42,--verbose_gc ``` - Dart VM no longer supports external strings: `Dart_IsExternalString`, `Dart_NewExternalLatin1String` and `Dart_NewExternalUTF16String` functions are removed from Dart C API. ### [`v3.3.4`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#334---2024-04-17) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.3.3...3.3.4) This is a patch release that: - Fixes an issue with JS interop in dart2wasm where JS interop methods that used the enclosing library's `@JS` annotation were actually using the invocation's enclosing library's `@JS` annotation. (issue [#​55430]). [#​55430]: https://redirect.github.com/dart-lang/sdk/issues/55430 ### [`v3.3.3`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#333---2024-03-27) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.3.2...3.3.3) This is a patch release that: - Fixes an issue where dart vm crashed when running on pre-SSE41 older CPUs on Windows (issue [#​55211][]). [#​55211]: https://redirect.github.com/dart-lang/sdk/issues/55211 ### [`v3.3.2`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#332---2024-03-20) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.3.1...3.3.2) This is a patch release that: - Fixes an issue in the CFE that placed some structural parameter references out of their context in the code restored from dill files, causing crashes in the incremental compiler whenever it restored a typedef from dill such that the typedef contained a generic function type on its right-hand side (issue [#​55158][]). - Fixes an issue in the CFE that prevented redirecting factories from being resolved in initializers of extension types (issue [#​55194][]). - Fixes an issues with VM's implementation of `DateTime.timeZoneName` on Windows, which was checking whether current date is in the summer or standard time rather than checking if the given moment is in the summer or standard time (issue [#​55240][]). [#​55158]: https://redirect.github.com/dart-lang/sdk/issues/55158 [#​55194]: https://redirect.github.com/dart-lang/sdk/issues/55194 [#​55240]: https://redirect.github.com/dart-lang/sdk/issues/55240 ### [`v3.3.1`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#331---2024-03-06) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.3.0...3.3.1) This is a patch release that: - Fixes an issue in dart2js where object literal constructors in interop extension types would fail to compile without an `@JS` annotation on the library (issue [#​55057][]). - Disallows certain types involving extension types from being used as the operand of an `await` expression, unless the extension type itself implements `Future` (issue [#​55095][]). [#​55057]: https://redirect.github.com/dart-lang/sdk/issues/55057 [#​55095]: https://redirect.github.com/dart-lang/sdk/issues/55095 ### [`v3.3.0`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#330) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.6...3.3.0) ##### Language Dart 3.3 adds [extension types] to the language. To use them, set your package's \[SDK constraint]\[language version] lower bound to 3.3 or greater (`sdk: '^3.3.0'`). ##### Extension types [extension types]: https://redirect.github.com/dart-lang/language/issues/2727 An *extension type* wraps an existing type with a different, static-only interface. It works in a way which is in many ways similar to a class that contains a single final instance variable holding the wrapped object, but without the space and time overhead of an actual wrapper object. Extension types are introduced by *extension type declarations*. Each such declaration declares a new named type (not just a new name for the same type). It declares a *representation variable* whose type is the *representation type*. The effect of using an extension type is that the *representation* (that is, the value of the representation variable) has the members declared by the extension type rather than the members declared by its "own" type (the representation type). Example: ```dart extension type Meters(int value) { String get label => '${value}m'; Meters operator +(Meters other) => Meters(value + other.value); } void main() { var m = Meters(42); // Has type `Meters`. var m2 = m + m; // OK, type `Meters`. // int i = m; // Compile-time error, wrong type. // m.isEven; // Compile-time error, no such member. assert(identical(m, m.value)); // Succeeds. } ``` The declaration `Meters` is an extension type that has representation type `int`. It introduces an implicit constructor `Meters(int value);` and a getter `int get value`. `m` and `m.value` is the very same object, but `m` has type `Meters` and `m.value` has type `int`. The point is that `m` has the members of `Meters` and `m.value` has the members of `int`. Extension types are entirely static, they do not exist at run time. If `o` is the value of an expression whose static type is an extension type `E` with representation type `R`, then `o` is just a normal object whose run-time type is a subtype of `R`, exactly like the value of an expression of type `R`. Also the run-time value of `E` is `R` (for example, `E == R` is true). In short: At run time, an extension type is erased to the corresponding representation type. A method call on an expression of an extension type is resolved at compile-time, based on the static type of the receiver, similar to how extension method calls work. There is no virtual or dynamic dispatch. This, combined with no memory overhead, means that extension types are zero-cost wrappers around their representation value. While there is thus no performance cost to using extension types, there is a safety cost. Since extension types are erased at compile time, run-time type tests on values that are statically typed as an extension type will check the type of the representation object instead, and if the type check looks like it tests for an extension type, like `is Meters`, it actually checks for the representation type, that is, it works exactly like `is int` at run time. Moreover, as mentioned above, if an extension type is used as a type argument to a generic class or function, the type variable will be bound to the representation type at run time. For example: ```dart void main() { var meters = Meters(3); // At run time, `Meters` is just `int`. print(meters is int); // Prints "true". print([] is List); // Prints "true". // An explicit cast is allowed and succeeds as well: List meterList = [1, 2, 3] as List; print(meterList[1].label); // Prints "2m". } ``` Extension types are useful when you are willing to sacrifice some run-time encapsulation in order to avoid the overhead of wrapping values in instances of wrapper classes, but still want to provide a different interface than the wrapped object. An example of that is interop, where you may have data that are not Dart objects to begin with (for example, raw JavaScript objects when using JavaScript interop), and you may have large collections of objects where it's not efficient to allocate an extra object for each element. ##### Other changes - **Breaking Change** [#​54056][]: The rules for private field promotion have been changed so that an abstract getter is considered promotable if there are no conflicting declarations. There are no conflicting declarations if there are no non-final fields, external fields, concrete getters, or `noSuchMethod` forwarding getters with the same name in the same library. This makes the implementation more consistent and allows type promotion in a few rare scenarios where it wasn't previously allowed. It is unlikely, but this change could cause a breakage by changing an inferred type in a way that breaks later code. For example: ```dart class A { int? get _field; } class B extends A { final int? _field; B(this._field); } test(A a) { if (a._field != null) { var x = a._field; // Previously had type `int?`; now has type `int` ... x = null; // Previously allowed; now causes a compile-time error. } } ``` Affected code can be fixed by adding an explicit type annotation. For example, in the above snippet, `var x` can be changed to `int? x`. It's also possible that some continuous integration configurations might fail if they have been configured to treat warnings as errors, because the expanded type promotion could lead to one of the following warnings: - `unnecessary_non_null_assertion` - `unnecessary_cast` - `invalid_null_aware_operator` These warnings can be addressed in the usual way, by removing the unnecessary operation in the first two cases, or changing `?.` to `.` in the third case. To learn more about other rules surrounding type promotion, check out the guide on [Fixing type promotion failures][]. [#​54056]: https://redirect.github.com/dart-lang/sdk/issues/54056 [Fixing type promotion failures]: https://dart.dev/tools/non-promotion-reasons ##### Libraries ##### `dart:core` - `String.fromCharCodes` now allow `start` and `end` to be after the end of the `Iterable` argument, just like `skip` and `take` does on an `Iterable`. ##### `dart:ffi` - In addition to functions, `@Native` can now be used on fields. - Allow taking the address of native functions and fields via `Native.addressOf`. - The `elementAt` pointer arithmetic extension methods on core `Pointer` types are now deprecated. Migrate to the new `-` and `+` operators instead. - The experimental and deprecated `@FfiNative` annotation has been removed. Usages should be updated to use the `@Native` annotation. ##### `dart:js_interop` - **Breaking Change in the representation of JS types** [#​52687][]: JS types like `JSAny` were previously represented using a custom erasure of `@staticInterop` types that were compiler-specific. They are now represented as extension types where their representation types are compiler-specific. This means that user-defined `@staticInterop` types that implemented `JSAny` or `JSObject` can no longer do so and need to use `JSObject.fromInteropObject`. Going forward, it's recommended to use extension types to define interop APIs. Those extension types can still implement JS types. - **JSArray and JSPromise generics**: `JSArray` and `JSPromise` are now generic types whose type parameter is a subtype of `JSAny?`. Conversions to and from these types are changed to account for the type parameters of the Dart or JS type, respectively. - **Breaking Change in names of extensions**: Some `dart:js_interop` extension members are moved to different extensions on the same type or a supertype to better organize the API surface. See `JSAnyUtilityExtension` and `JSAnyOperatorExtension` for the new extensions. This shouldn't make a difference unless the extension names were explicitly used. - Add `importModule` to allow users to dynamically import modules using the JS `import()` expression. [#​52687]: https://redirect.github.com/dart-lang/sdk/issues/52687 ##### `dart:js_interop_unsafe` - Add `has` helper to make `hasProperty` calls more concise. ##### `dart:typed_data` - **BREAKING CHANGE** ([https://github.com/dart-lang/sdk/issues/53218](https://redirect.github.com/dart-lang/sdk/issues/53218)) The unmodifiable view classes for typed data are deprecated. Instead of using the constructors for these classes to create an unmodifiable view, e.g. ```dart Uint8List data = ... final readOnlyView = UnmodifiableUint8ListView(data); ``` use the new `asUnmodifiableView()` methods: ```dart Uint8List data = ... final readOnlyView = data.asUnmodifiableView(); ``` The reason for this change is to allow more flexibility in the implementation of typed data so the native and web platforms can use different strategies for ensuring typed data has good performance. The deprecated types will be removed in a future Dart version. ##### `dart:nativewrappers` - **Breaking Change** [#​51896][]: The NativeWrapperClasses are marked `base` so that none of their subtypes can be implemented. Implementing subtypes can lead to crashes when passing such native wrapper to a native call, as it will try to unwrap a native field that doesn't exist. [#​51896]: https://redirect.github.com/dart-lang/sdk/issues/51896 ##### Tools ##### Dart command line - The `dart create` command now uses v3 of `package:lints`, including multiple new recommended lints by default. To learn more about the updated collection of lints, check out the `package:lints` [3.0.0 changelog entry][lints-3-0]. [lints-3-0]: https://pub.dev/packages/lints/changelog#300 ##### DevTools - Updated DevTools to version 2.31.1 from 2.28.1. To learn more, check out the release notes for versions [2.29.0][devtools-2-29-0], [2.30.0][devtools-2-30-0], and [2.31.0][devtools-2-31-0]. [devtools-2-29-0]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.29.0 [devtools-2-30-0]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.30.0 [devtools-2-31-0]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.31.0 ##### Wasm compiler (dart2wasm) - **Breaking Change** [#​54004][]: `dart:js_util`, `package:js`, and `dart:js` are now disallowed from being imported when compiling with `dart2wasm`. Prefer using `dart:js_interop` and `dart:js_interop_unsafe`. [#​54004]: https://redirect.github.com/dart-lang/sdk/issues/54004 ##### Development JavaScript compiler (DDC) - Type arguments of `package:js` interop types are now printed as `any` instead of being omitted. This is simply a change to the textual representation of package js types that have type arguments. These type arguments are still completely ignored by the type system at runtime. - Removed "implements <...>" text from the Chrome custom formatter display for Dart classes. This information provides little value and keeping it imposes an unnecessary maintenance cost. ##### Production JavaScript compiler (dart2js) - **Breaking Change** [#​54201][]: The `Invocation` that is passed to `noSuchMethod` will no longer have a minified `memberName`, even when dart2js is invoked with `--minify`. See [#​54201][] for more details. [#​54201]: https://redirect.github.com/dart-lang/sdk/issues/54201 ##### Analyzer - You can now suppress diagnostics in `pubspec.yaml` files by adding an `# ignore: ` comment. - Invalid `dart doc` comment directives are now reported. - The [`flutter_style_todos`][flutter_style_todos] lint now has a quick fix. [`flutter_style_todos`]: https://dart.dev/lints/flutter_style_todos ##### Linter - Removed the `iterable_contains_unrelated_type` and `list_remove_unrelated_type` lints. Consider migrating to the expanded [`collection_methods_unrelated_type`][collection_methods_unrelated_type] lint. - Removed various lints that are no longer necessary with sound null safety: - `always_require_non_null_named_parameters` - `avoid_returning_null`, - `avoid_returning_null_for_future` [`collection_methods_unrelated_type`]: https://dart.dev/lints/collection_methods_unrelated_type ### [`v3.2.6`](https://redirect.github.com/dart-lang/sdk/compare/3.2.5...3.2.6) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.5...3.2.6) ### [`v3.2.5`](https://redirect.github.com/dart-lang/sdk/compare/3.2.4...3.2.5) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.4...3.2.5) ### [`v3.2.4`](https://redirect.github.com/dart-lang/sdk/compare/3.2.3...3.2.4) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.3...3.2.4) ### [`v3.2.3`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#323---2023-12-06) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.2...3.2.3) This is a patch release that: - Disallows final fields to be used in a constant context during analysis (issue [#​54232][]). - Upgrades Dart DevTools to version 2.28.4 (issue [#​54213][]). - Fixes new AOT snapshots in the SDK failing with SIGILL in ARM environments that don't support the integer division instructions or x86-64 environments that don't support SSE4.1 (issue [#​54215][]). [#​54232]: https://redirect.github.com/dart-lang/sdk/issues/54232 [#​54213]: https://redirect.github.com/dart-lang/sdk/issues/54213 [#​54215]: https://redirect.github.com/dart-lang/sdk/issues/54215 ### [`v3.2.2`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#322---2023-11-29) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.1...3.2.2) This is a patch release that: - Adjusts the nullablity computations in the implementation of the upper bound algorithm in the compiler frontend (issue [#​53999][]). - Fixes missing closure code completion entries for function parameters for LSP-based editors like VS Code (issue [#​54112][]). [#​53999]: https://redirect.github.com/dart-lang/sdk/issues/53999 [#​54112]: https://redirect.github.com/dart-lang/sdk/issues/54112 ### [`v3.2.1`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#321---2023-11-22) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.2.0...3.2.1) This is a patch release that: - Fixes the left/mobile sidebar being empty on non-class pages in documentation generated with `dart doc` (issue [#​54073][]). - Fixes a JSON array parsing bug that causes a segmentation fault when `flutter test` is invoked with the `--coverage` flag (SDK issue [#​54059][], Flutter issue [#​124145][]). - Upgrades Dart DevTools to version 2.28.3 (issue [#​54085][]). [#​54073]: https://redirect.github.com/dart-lang/sdk/issues/54073 [#​54059]: https://redirect.github.com/dart-lang/sdk/issues/54059 [#​124145]: https://redirect.github.com/flutter/flutter/issues/124145 [#​54085]: https://redirect.github.com/dart-lang/sdk/issues/54085 ### [`v3.2.0`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#320---2023-11-15) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.1.5...3.2.0) ##### Language Dart 3.2 adds the following features. To use them, set your package's [SDK constraint][language version] lower bound to 3.2 or greater (`sdk: '^3.2.0'`). [language version]: https://dart.dev/guides/language/evolution - **Private field promotion**: In most circumstances, the types of private final fields can now be promoted by null checks and `is` tests. For example: ```dart class Example { final int? _privateField; Example(this._privateField); f() { if (_privateField != null) { // _privateField has now been promoted; you can use it without // null checking it. int i = _privateField; // OK } } } // Private field promotions also work from outside of the class: f(Example x) { if (x._privateField != null) { int i = x._privateField; // OK } } ``` To ensure soundness, a field is not eligible for field promotion in the following circumstances: - If it's not final (because a non-final field could be changed in between the test and the usage, invalidating the promotion). - If it's overridden elsewhere in the library by a concrete getter or a non-final field (because an access to an overridden field might resolve at runtime to the overriding getter or field). - If it's not private (because a non-private field might be overridden elsewhere in the program). - If it has the same name as a concrete getter or a non-final field in some other unrelated class in the library (because a class elsewhere in the program might extend one of the classes and implement the other, creating an override relationship between them). - If there is a concrete class `C` in the library whose interface contains a getter with the same name, but `C` does not have an implementation of that getter (such unimplemented getters aren't safe for field promotion, because they are implicitly forwarded to `noSuchMethod`, which might not return the same value each time it's called). - **Breaking Change** [#​53167][]: Use a more precise split point for refutable patterns. Previously, in an if-case statement, if flow analysis could prove that the scrutinee expression was guaranteed to throw an exception, it would sometimes fail to propagate type promotions implied by the pattern to the (dead) code that follows. This change makes the type promotion behavior of if-case statements consistent regardless of whether the scrutinee expression throws an exception. No live code is affected by this change, but there is a small chance that the change in types will cause a compile-time error to appear in some dead code in the user's project, where no compile-time error appeared previously. [#​53167]: https://redirect.github.com/dart-lang/sdk/issues/53167 ##### Libraries ##### `dart:async` - Added `broadcast` parameter to `Stream.empty` constructor. ##### `dart:cli` - **Breaking change** [#​52121][]: - `waitFor` is disabled by default and slated for removal in 3.4. Attempting to call this function will now throw an exception. Users that still depend on `waitFor` can enable it by passing `--enable_deprecated_wait_for` flag to the VM. [#​52121]: https://redirect.github.com/dart-lang/sdk/issues/52121 ##### `dart:convert` - **Breaking change** [#​52801][]: - Changed return types of `utf8.encode()` and `Utf8Codec.encode()` from `List` to `Uint8List`. [#​52801]: https://redirect.github.com/dart-lang/sdk/issues/52801 ##### `dart:developer` - Deprecated the `Service.getIsolateID` method. - Added `getIsolateId` method to `Service`. - Added `getObjectId` method to `Service`. ##### `dart:ffi` - Added the `NativeCallable.isolateLocal` constructor. This creates `NativeCallable`s with the same functionality as `Pointer.fromFunction`, except that `NativeCallable` accepts closures. - Added the `NativeCallable.keepIsolateAlive` method, which determines whether the `NativeCallable` keeps the isolate that created it alive. - All `NativeCallable` constructors can now accept closures. Previously `NativeCallable`s had the same restrictions as `Pointer.fromFunction`, and could only create callbacks for static functions. - **Breaking change** [#​53311][]: `NativeCallable.nativeFunction` now throws an error if is called after the `NativeCallable` has already been `close`d. Calls to `close` after the first are now ignored. [#​53311]: https://redirect.github.com/dart-lang/sdk/issues/53311 ##### `dart:io` - **Breaking change** [#​53005][]: The headers returned by `HttpClientResponse.headers` and `HttpRequest.headers` no longer include trailing whitespace in their values. - **Breaking change** [#​53227][]: Folded headers values returned by `HttpClientResponse.headers` and `HttpRequest.headers` now have a space inserted at the fold point. [#​53005]: https://dartbug.com/53005 [#​53227]: https://dartbug.com/53227 ##### `dart:isolate` - Added `Isolate.packageConfigSync` and `Isolate.resolvePackageUriSync` APIs. ##### `dart:js_interop` - **Breaking Change on JSNumber.toDart and Object.toJS**: `JSNumber.toDart` is removed in favor of `toDartDouble` and `toDartInt` to make the type explicit. `Object.toJS` is also removed in favor of `Object.toJSBox`. Previously, this function would allow Dart objects to flow into JS unwrapped on the JS backends. Now, there's an explicit wrapper that is added and unwrapped via `JSBoxedDartObject.toDart`. Similarly, `JSExportedDartObject` is renamed to `JSBoxedDartObject` and the extensions `ObjectToJSExportedDartObject` and `JSExportedDartObjectToObject` are renamed to `ObjectToJSBoxedDartObject` and `JSBoxedDartObjectToObject` in order to avoid confusion with `@JSExport`. - **Type parameters in external APIs**: Type parameters must now be bound to a static interop type or one of the `dart:js_interop` types like `JSNumber` when used in an external API. This only affects `dart:js_interop` classes and not `package:js` or other forms of JS interop. - **Subtyping `dart:js_interop` types**: `@staticInterop` types can subtype only `JSObject` and `JSAny` from the set of JS types in `dart:js_interop`. Subtyping other types from `dart:js_interop` would result in confusing type errors before, so this makes it a static error. - **Global context of `dart:js_interop` and `@staticInterop` APIs**: Static interop APIs will now use the same global context as non-static interop instead of `globalThis` to avoid a greater migration. Static interop APIs, either through `dart:js_interop` or the `@staticInterop` annotation, have used JavaScript's `globalThis` as the global context. This is relevant to things like external top-level members or external constructors, as this is the root context we expect those members to reside in. Historically, this was not the case in dart2js and DDC. We used either `self` or DDC's `global` in non-static interop APIs with `package:js`. So, static interop APIs will now use one of those global contexts. Functionally, this should matter in only a very small number of cases, like when using older browser versions. `dart:js_interop`'s `globalJSObject` is also renamed to `globalContext` and returns the global context used in the lowerings. - **Breaking Change on Types of `dart:js_interop` External APIs**: External JS interop APIs when using `dart:js_interop` are restricted to a set of allowed types. Namely, this includes the primitive types like `String`, JS types from `dart:js_interop`, and other static interop types (either through `@staticInterop` or extension types). - **Breaking Change on `dart:js_interop` `isNull` and `isUndefined`**: `null` and `undefined` can only be discerned in the JS backends. dart2wasm conflates the two values and treats them both as Dart null. Therefore, these two helper methods should not be used on dart2wasm and will throw to avoid potentially erroneous code. - **Breaking Change on `dart:js_interop` `typeofEquals` and `instanceof`**: Both APIs now return a `bool` instead of a `JSBoolean`. `typeofEquals` also now takes in a `String` instead of a `JSString`. - **Breaking Change on `dart:js_interop` `JSAny` and `JSObject`**: These types can only be implemented, and no longer extended, by user `@staticInterop` types. - **Breaking Change on `dart:js_interop` `JSArray.withLength`**: This API now takes in an `int` instead of `JSNumber`. ##### Tools ##### Development JavaScript compiler (DDC) - Applications compiled by DDC will no longer add members to the native JavaScript Object prototype. - **Breaking change for JS interop with Symbols and BigInts**: JavaScript `Symbol`s and `BigInt`s are now associated with their own interceptor and should not be used with `package:js` classes. These types were being intercepted with the assumption that they are a subtype of JavaScript's `Object`, but this is incorrect. This lead to erroneous behavior when using these types as Dart `Object`s. See [#​53106][] for more details. Use `dart:js_interop`'s `JSSymbol` and `JSBigInt` with extension types to interop with these types. ##### Production JavaScript compiler (dart2js) - **Breaking change for JS interop with Symbols and BigInts**: JavaScript `Symbol`s and `BigInt`s are now associated with their own interceptor and should not be used with `package:js` classes. These types were being intercepted with the assumption that they are a subtype of JavaScript's `Object`, but this is incorrect. This lead to erroneous behavior when using these types as Dart `Object`s. See [#​53106][] for more details. Use `dart:js_interop`'s `JSSymbol` and `JSBigInt` with extension types to interop with these types. [#​53106]: https://redirect.github.com/dart-lang/sdk/issues/53106 ##### Dart command line - The `dart create` command has a new `cli` template to quickly create Dart command-line applications with basic argument parsing capabilities. To learn more about using the template, run `dart help create`. ##### Dart format - Always split enum declarations containing a line comment. - Fix regression in splitting type annotations with library prefixes. - Support `--enable-experiment` command-line option to enable language experiments. ##### DevTools - Incorporated the [2.26.1][devtools-2-26-1], [2.27.0][devtools-2-27-0], and [2.28.1][devtools-2-28-1] releases of DevTools. [devtools-2-26-1]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.26.1 [devtools-2-27-0]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.27.0 [devtools-2-28-1]: https://docs.flutter.dev/tools/devtools/release-notes/release-notes-2.28.1 ##### Linter - Added the experimental [`annotate_redeclares`][annotate_redeclares] lint. - Marked the [`use_build_context_synchronously`][use_build_context_synchronously] lint as stable. [`annotate_redeclares`]: https://dart.dev/lints/annotate_redeclares [`use_build_context_synchronously`]: https://dart.dev/lints/use_build_context_synchronously ##### Pub - New option `dart pub upgrade --tighten` which will update dependencies' lower bounds in `pubspec.yaml` to match the current version. - The commands `dart pub get`/`add`/`upgrade` will now show if a dependency changed between direct, dev and transitive dependency. - The command `dart pub upgrade` no longer shows unchanged dependencies. ### [`v3.1.5`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#315---2023-10-25) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.1.4...3.1.5) This is a patch release that: - Fixes an issue affecting Dart compiled to JavaScript running in Node.js 21. A change in Node.js 21 affected the Dart Web compiler runtime. This patch release accommodates for those changes (issue [#​53810](https://redirect.github.com/dart-lang/sdk/issues/53810)). [#​53810]: https://redirect.github.com/dart-lang/sdk/issues/53810 ### [`v3.1.4`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#314---2023-10-18) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.1.3...3.1.4) This is a patch release that: - Fixes an issue in the Dart VM, users are not being able to see value of variables while debugging code (issue \[[#​53747](https://redirect.github.com/dart-lang/sdk/issues/53747)]). [#​53654]: https://redirect.github.com/dart-lang/sdk/issues/53747 ### [`v3.1.3`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#313---2023-09-27) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.1.2...3.1.3) This is a patch release that: - Fixes a bug in dart2js which would cause the compiler to crash when using `@staticInterop` `@anonymous` factory constructors with type parameters (see issue [#​53579] for more details). - The standalone Dart VM now exports symbols only for the Dart_\* embedding API functions, avoiding conflicts with other DSOs loaded into the same process, such as shared libraries loaded through `dart:ffi`, that may have different versions of the same symbols (issue \[[#​53503](https://redirect.github.com/dart-lang/sdk/issues/53503)]). - Fixes an issue with super slow access to variables while debugging. The fix avoids searching static functions in the imported libraries as references to members are fully resolved by the front-end. (issue [#​53541]) [#​53579]: https://redirect.github.com/dart-lang/sdk/issues/53579 [#​53267]: https://redirect.github.com/dart-lang/sdk/issues/53503 [#​53541]: https://redirect.github.com/dart-lang/sdk/issues/53541 ### [`v3.1.2`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#312---2023-09-13) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.1.1...3.1.2) This is a patch release that: - Fixes a bug in dart2js which crashed the compiler when a typed record pattern was used outside the scope of a function body, such as in a field initializer. For example `final x = { for (var (int a,) in someList) a: a };` (issue [#​53449]) - Fixes an expedient issue of users seeing an unhandled exception pause in the debugger, please [https://github.com/dart-lang/sdk/issues/53450](https://redirect.github.com/dart-lang/sdk/issues/53450)es/53450 for more details. The fix uses try/catch in lookupAddresses instead of Future error so that we don't see an unhandled exception pause in the debugger (issue [#​53450]) [#​53449]: https://redirect.github.com/dart-lang/sdk/issues/53449 [#​53450]: https://redirect.github.com/dart-lang/sdk/issues/53450 ### [`v3.1.1`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#311---2023-09-07) [Compare Source](https://redirect.github.com/dart-lang/sdk/compare/3.1.0...3.1.1) This is a patch release that: - Fixes a bug in the parser which prevented a record pattern from containing a nested record pattern, where the nested record pattern uses record destructuring shorthand syntax, for example `final ((:a, :b), c) = record;` (issue [#​53352]). [#​53352]: https://redirect.github.com/dart-lang/sdk/issues/53352 ### [`v3.1.0`](https://redirect.github.com/dart-lang/sdk/blob/HEAD/CHANGELOG.md#310---2023-08-16) [Compare Source](https://redirect.github.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://redirect.github.com/dart-lang/sdk/issues/52334 ##### `dart:core` - `Uri.base` on native platforms now respects `IOOverrides` overriding current directory ([#​39796][]). [#​39796]: https://redirect.github.com/dart-lang/sdk/issues/39796 ##### `dart:ffi` - Added the `NativeCallable` class, which can be used to create callbacks that allow native code to call into Dart code from any thread. See `NativeCallable.listener`. In future releases, `NativeCallable` will be updated with more functionality, and will become the recommended way of creating native callbacks for all use cases, replacing `Pointer.fromFunction`. ##### `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.l

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