What should a reusable design system component specify beyond its appearance?
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Model Answer & Deep-Dive Explanation
Specify purpose, anatomy, content rules, behavior, interaction states, accessibility expectations, and implementation guidance. A button needs focus, hover, active, disabled, and loading behavior as appropriate, along with naming and keyboard rules. Document when to use the component and when another patte is better. Define tokens for consistent styling and a change process for compatibility. A screenshot library is useful but incomplete because product teams need predictable behavior and composition. Test components in realistic layouts and assistive-technology workflows rather than only isolated visual examples.
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