attest 0.9.0

Continuous accessibility-compliance engine for Flutter. Pure-Dart rules that map findings to WCAG and EN 301 549 success criteria, with CI baseline gating.

Changelog

All notable changes to this package are documented here. The format follows Keep a Changelog and this project adheres to Semantic Versioning.

0.9.0

Changed

• attest/state-exposed now fires on a group of two or more custom controls (down from three), catching small segmented/toggle pairs that expose no selected state.

0.8.0

Added

• Versioned standard packs: Standard (en301549_v3_2_1, wcag22) and RuleConfig.standard. The engine runs a rule only when its criterion belongs to the selected pack, so attest/target-size (WCAG 2.5.8) is active only under wcag22.

0.7.0

Added

• TranscriptGenerator, which turns a snapshot into the screen-reader announcement sequence, and an AuditReport.transcript field to carry it.

0.6.0

Added

• Report layer: Baseline (accepted-fingerprint set with JSON), BaselineGate (new/known/resolved diff), and SarifWriter (SARIF 2.1.0 output).

0.5.0

Added

• Three heuristic rules, each tagged heuristic and suppressible: attest/heading-structure (1.3.1), attest/focus-order (2.4.3) and attest/state-exposed (4.1.2).
• RuleConfig.disabledRules to mute individual rules across a run.

0.4.0

Added

• attest/contrast rule (WCAG 1.4.3): 4.5:1 for normal text, 3:1 for large, disabled controls exempt, borderline ratios downgraded to a warning.
• SemanticsSnapshot.copyWith.

Changed

• ContrastSample now carries the label, bounds, font size, weight and disabled state so the rule is self-contained.

0.3.0

Added

• attest/text-overflow rule (WCAG 1.4.4) reading the text-scale observations, and the Resize Text criterion.

0.2.0

Added

• Three geometry and reachability rules: attest/target-size (WCAG 2.5.8, with a configurable platform/WCAG-minimum threshold), attest/focus-trap (2.1.1), and the heuristic attest/ambiguous-name (2.4.6).
• TargetSizeMode and the targetSizeMode/platformTargetSize options on RuleConfig.

0.1.0

Added

• Serializable, Flutter-free data model: SemanticsSnapshot, SemanticsNodeData, Finding, Criterion, AuditReport and friends, all with value equality and JSON round-trip.
• Rule interface, RuleEngine, RuleConfig/RuleContext, and a stable, coordinate-free Fingerprinter for baseline diffing.
• The first four tree-walking rules: attest/interactive-name, attest/image-alt, attest/placeholder-name and attest/field-label, each bound to a WCAG and EN 301 549 criterion.