core library

Pure-Dart part of a11yship (report model, rule catalog, rules engine). Safe to import from the Dart VM (CLI) and from Flutter web.

Classes

Box: A rectangle in logical pixels, relative to the top-left of the screen.
ContrastSample: Contrast measured for one piece of text on the screenshot.
EngineOptions: Options that change how strict rules are.
Issue: One accessibility problem found on one screen.
ManualCheck: A criterion that needs a human with a screen reader, keyboard or switch.
NodeSnapshot: A flattened, framework-independent view of one semantics node.
OverflowSample: A layout overflow reported while the screen was rendered at 200% text.
Rule: An automated rule.
ScanReport: Everything one scan run produced. Serialised to report.json.
ScanSummary: Aggregated numbers for a scan, stored alongside it for fast dashboards.
ScreenResult: Result for a single captured screen (or screen state).
ScreenSnapshot: Everything captured for one screen.
SourceLocation: Where in the developer's code the offending widget was created.
Wcag: A WCAG success criterion.
WcagSc: WCAG criteria referenced by rules and the manual checklist.

Severity: Impact of an issue on users, modelled after common audit practice.
TargetGuide: Platform whose design guidelines are used for best-practice checks.

kManualChecks → const List<ManualCheck>: Mobile-relevant WCAG 2.2 AA criteria that automation cannot decide.
kReportSchemaVersion → const int: Report schema version. Bump when the JSON shape changes incompatibly.
kRules → const List<Rule>: All automated rules, in report order.
kToolVersion → const String: Version of the scanner that produced a report.

evaluateScreen(ScreenSnapshot screen, {EngineOptions options = const EngineOptions()}) → ScreenResult: Runs every rule on screen and returns the screen result.