Accessibility Belongs Inside the Component Contract
Identify accessibility requirements that should be built into reusable component contracts.
Principle: Accessibility scales when the system owns reusable behavior. Build in what should not vary Focus management, keyboard behavior, state announcement, and role semantics should not depend on each product team reinventing them. If the pattern is reusable, the accessible behavior should be reusable too. Require what consumers must supply The system cannot guess every label, error message, or workflow context. Strong docs make those responsibilities explicit so teams do not confuse component quality with finished experience quality. Document when not to use it Accessibility also depends on fit. A Menu should not become a form, a Tooltip should not…
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