Update dependency dart to ^3.6.0

[renovate]

This PR contains the following updates:

Package	Update	Change
dart (source)	minor	^3.4.1 -> ^3.6.0

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Release Notes

dart-lang/sdk (dart)

v3.6.0

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Language

Dart 3.6 adds digit separators to the language. To use them, set your
package's [SDK constraint][language version] lower bound to 3.6 or greater
(sdk: '^3.6.0').

Digit separators

Digits in number literals (decimal integer literals, double literals,
scientific notation literals, and hexadecimal literals) can now include
underscores between digits, as "digit separators." The separators do not change
the value of a literal, but can serve to make the number more readable.

100__000_000__000_000__000_000  // one hundred million million millions!
0x4000_0000_0000_0000
0.000_000_000_01
0x00_14_22_01_23_45  // MAC address

Separators are not allowed at the start of a number (this would be parsed as an
identifier), at the end of a number, or adjacent to another character in a
number, like ., x, or the e in scientific notation.

• Breaking Change #​56065: The context used by the compiler and analyzer
  to perform type inference on the operand of a throw expression has been
  changed from the "unknown type" to Object. This makes the type system more
  self-consistent, because it reflects the fact that it's not legal to throw
  null. This change is not expected to make any difference in practice.

Libraries

dart:io

• Breaking Change #​52444: Removed the Platform() constructor, which
  has been deprecated since Dart 3.1.

• Breaking Change #​53618: HttpClient now responds to a redirect
  that is missing a "Location" header by throwing RedirectException, instead
  of StateError.

dart:js_interop

• Added constructors for JSArrayBuffer, JSDataView, and concrete typed array
  types e.g. JSInt8Array.
• Added length and []/[]= operators to JSArray.
• Added toJSCaptureThis so this is passed in from JavaScript to the
  callback as the first parameter.
• Added a static from method on JSArray to create a JSArray from a given
  JavaScript iterable or array-like object.

Tools

CFE

• Breaking Change #​56466: The implementation of the UP and
  DOWN algorithms in the CFE are changed to match the specification
  and the corresponding implementations in the Analyzer. The upper and
  lower closures of type schemas are now computed just before they are
  passed into the subtype testing procedure instead of at the very
  beginning of the UP and DOWN algorithms.

Dart format

• Preserve type parameters on old-style function-typed formals that also use
  this. or super..
• Correctly format imports with both as and if clauses.

Wasm compiler (dart2wasm)

• The condition dart.library.js is now false on conditional imports in
  dart2wasm. Note that it was already a static error to import dart:js
  directly (see #​55266).

Pub

• Support for workspaces. This allows you to develop and resolve multiple
  packages from the same repo together. See https://dart.dev/go/pub-workspaces
  for more info.

• New command dart pub bump. Increments the version number of the current
  package.

  For example: dart pub bump minor will change the version from 1.2.3 to
  1.3.0.

• New validation: dart pub publish will warn if your git status is not
  clean.

• New flag dart pub upgrade --unlock-transitive.

• dart pub upgrade --unlock-transitive pkg, will unlock and upgrade all the
  dependencies of pkg instead of just pkg.

Analyzer

• Add the [use_truncating_division][use_truncating_division] lint rule.
• Add the experimental [omit_obvious_local_variable_types][omit_obvious_local_variable_types] lint rule.
• Add the experimental [specify_nonobvious_local_variable_types][specify_nonobvious_local_variable_types] lint rule.
• Add the experimental [avoid_futureor_void][avoid_futureor_void] lint rule.
• Add quick fixes for more than 14 diagnostics.
• Add new assists: "add digit separators", "remove digit separators", and
  "invert conditional expression".

v3.5.4

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v3.5.3

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• 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).

v3.5.2

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• 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).

v3.5.1

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• 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).

v3.5.0

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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.

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.

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<Socket>.
  Fixes #​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.

dart:js_interop

• Breaking Change #​55508: importModule now accepts a JSAny instead
  of a String to support other JS values as well, like TrustedScriptURLs.

• 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<T>, 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).

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.

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

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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).

v3.4.3

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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]) as dart2wasm's currently only supports a small subset of
  dart:ffi (issue #​55890).

v3.4.2

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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).

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