camera_web

• Fixes camera initialization failure on Safari by fixing a null check operator error using a nullable getter and null-safe practices.

• Fixes a TypeError in availableCameras() caused by browsers (e.g. Firefox) returning an invalid facingMode capability value instead of the expected DOMString sequence.
• Updates minimum supported SDK version to Flutter 3.38/Dart 3.10.

• Removes invalid @JS annotation from extension type constructors.

What broke

setFlashMode and takePicture threw on any camera that has a flash.

The Image Capture specification declares sequence<boolean> torch in
MediaTrackCapabilities. package:web is generated from that specification, so
torchNullable was typed JSArray<JSBoolean>?.

No browser ships that shape. Chromium and WebKit both declare a bare boolean torch.
Reading the property threw before the torch could be applied. The error depends on
the compiler:

Compiler	Error
DDC	TypeError: true: type 'bool' is not a subtype of type 'JSArray<Object?>?'
dart2js	NoSuchMethodError: method not found: 'gq'
dart2wasm	ArgumentError: Invalid argument(s)

The same line held two more defects:

• .first gave the wrong answer for [false, true]. A specification-shaped sequence
  lists the values the source accepts, so that means the torch can be turned on.
• .first threw StateError on an empty sequence.

The fix

Read torch as JSAny? and add canEnableTorch, which accepts either shape and
returns false for anything else.

A sequence is answered with any instead of first, and is only trusted when every
element is a boolean. Anything unrecognised raises torchModeNotSupported instead of
crashing, and prints a debug-only warning so the shape can be reported.

Test matrix

Browser reports	Before	After
true	TypeError	torch on
false	TypeError	torchModeNotSupported
[false, true]	wrong answer	torch on
[true]	torch on	torch on
[false]	torchModeNotSupported	torchModeNotSupported
[]	StateError	torchModeNotSupported
key absent	torchModeNotSupported	torchModeNotSupported
'yes'	TypeError	torchModeNotSupported + warning
['yes']	TypeError	torchModeNotSupported + warning

Nine cases are covered by integration tests. Six of them fail without this change.

Devices tested

All nine shapes were run through the real plugin code on each of these. All passed.

Device	Browser	Result
Moto G56 5G, Android 16	Chrome 151	9 / 9
macOS 26.3	Safari 26.3	9 / 9
iPhone 17 Pro simulator, iOS 26.1	Safari	9 / 9
macOS 26.3	Chrome 151, dart2js and dart2wasm	9 / 9

On the Moto G56 the rear camera reports torch: true as a bare boolean, and the flash
now turns on. The front camera does not report the key at all and raises
torchModeNotSupported as expected.

What was added

• canEnableTorch on NonStandardFieldsOnMediaTrackCapabilities, which reads either shape.
• A debug-only debugPrint warning for a shape that is neither, so an unknown browser can
  be reported rather than failing quietly.
• Nine integration tests covering every shape, plus a check that a recognised shape never warns.
• A CHANGELOG entry and a version bump to 0.3.5+6.

What was removed

• The JSArray<JSBoolean>? type on torchNullable, which no browser matches.
• The ?.toDart.first.toDart ?? false chain in _setTorchMode.

Issues fixed by this PR

Fixes flutter/flutter#191384

Pre-Review Checklist

🤖 Generated with Claude Code

• Removes maxVideoDuration/maxDuration, as the feature was never exposed at the app-facing package level, and is deprecated at the platform interface level.
• Updates minimum supported SDK version to Flutter 3.16/Dart 3.2.

• Adds support to control video FPS and bitrate. See CameraController.withSettings.
• Updates minimum supported SDK version to Flutter 3.13/Dart 3.1.

• Changes availableCameras to not ask for the microphone permission.

• Updates README to improve example of Image creation.

• Adds pub topics to package metadata.
• Updates minimum supported SDK version to Flutter 3.7/Dart 2.19.

• Migrates to dart:ui_web APIs.
• Updates minimum supported SDK version to Flutter 3.13.0/Dart 3.1.0.

• Updates minimum supported SDK version to Flutter 3.10/Dart 3.0.
• Fixes new lint warnings.

• Updates to latest camera platform interface, and fails if user attempts to use streaming with recording (since streaming is currently unsupported on web).

• Updates code for stricter lint checks.

• Updates links for the merge of flutter/plugins into flutter/packages.
• Updates minimum Flutter version to 3.0.

• Clarifies explanation of endorsement in README.
• Aligns Dart and Flutter SDK constraints.

• Removes obsolete null checks on non-nullable values.
• Updates minimum supported SDK version to Flutter 3.3/Dart 2.18.

• BREAKING CHANGE: Renames error code cameraPermission to CameraAccessDenied to be consistent with other platforms.

• Updates imports for prefer_relative_imports.
• Updates minimum Flutter version to 2.10.
• Fixes avoid_redundant_argument_values lint warnings and minor typos.
• Ignores unnecessary import warnings in preparation for upcoming Flutter changes.

• Add video recording functionality.
• Fix cameraNotReadable error that prevented access to the camera on some Android devices.

• Update usage documentation.

• Fixes cameraNotReadable error that prevented access to the camera on some Android devices when initializing a camera.
• Implemented support for new Dart SDKs with an async requestFullscreen API.

• Internal code cleanup for stricter analysis options.

• Migrates from ui.hash* to Object.hash*.
• Updates minimum Flutter version for changes in 0.2.1+3.

• Fixes library_private_types_in_public_api, sort_child_properties_last and use_key_in_widget_constructors lint warnings.

• Minor fixes for new analysis options.

• Initial release, adapted from the Flutter I/O Photobooth project.