Everything in Design Systems, page 6
Linking form-component adoption to fewer a11y bugs
Define both variables, segment by adoption level, control confounders, watch correlation-versus-causation.
Gradual design system adoption in legacy code
Coexistence strategy, codemods for mechanical swaps, lint rules to block regressions, prioritize high-traffic surfaces.
Measuring design system adoption and health
Component coverage and version spread from code scans, usage analytics, issue and satisfaction signals.
Technical and comms plan for a Button break
Additive-first then deprecate, major semver, codemod and guide, multi-channel early comms with adoption tracking.
Critical a11y fix requiring a breaking API change
Ship a safe interim fix, plan the breaking API as a major with deprecation and codemod, communicate urgency.
Design systems across micro-frontends
Shared singletons and version alignment, token-based theming, distribution via shared scopes, stronger governance.
Governance for accessibility regressions
Detection via audits and monitoring, triage with severity and ownership, remediation SLAs, prevention feedback.
Automated a11y testing in CI and its limits
Axe-core in unit and story tests, fail the build on violations, plus manual screen-reader and keyboard testing.
Architecting a federated documentation site
Docs-as-code with a manifest, CI publishing artifacts, a build that pulls and merges, unified deploy.
Documenting accessibility per component
Per-component a11y sections, keyboard tables, ARIA roles and states, live examples.
Composite components versus layout primitives
Primitives give flexibility and composition, composites enforce consistency, choose by reuse and variation.
Rolling out a breaking change to a shared Button
Major semver bump, deprecation period, codemod and migration guide, staged comms.
Versioning and shipping design tokens via NPM
Semver, deprecate-before-delete with aliases, codemods and migration guides.
Design a type-safe polymorphic component that renders as different HTML elements
Tests TypeScript generics and prop forwarding in design systems. Answer: generic as constrained to keyof JSX.IntrinsicElements, merged with ComponentPropsWithoutRef<C>, omit clashes, forward ref with ElementRef.
What WAI-ARIA attributes and keyboard interactions make Tabs accessible?
This tests mastery of the W3C Tabs pattern. A strong answer covers role tablist tab tabpanel, aria-selected, aria-controls, and arrow-key roving focus with optional auto-activation. A red flag is treating tabs as buttons and relying only on the Tab key.
How would you structure a flexible Card component API?
Tests composition-over-configuration thinking in design systems. A strong answer uses compound components or slots so consumers reorder or omit title, image, and body freely without prop drilling. Red flag: rigid boolean props that freeze layout order.
Two strategies to prevent style leakage in reusable components and their trade-offs
This tests style encapsulation in design systems. A strong answer contrasts Shadow DOM, which fully isolates CSS via a shadow root, with scoped naming like BEM or CSS Modules. Red flag: proposing global resets or !important as a solution.
When should data in a reusable component be a prop or state?
This tests controlled versus uncontrolled patterns. Great answers ask who owns the data: props when parent must drive or observe it, state only for private details.
How do you handle a one-off token exception for a campaign?
Tests balancing speed and systemic consistency. Strong answers outline a governance fast-track with sunset clauses, document the exception, and isolate it via campaign overrides instead of mutating core tokens. Red flag: permanently hardcoding the one-off.
Describe a robust architecture for implementing theming using design tokens
Three tiers, CSS custom properties for live switching, and layered overrides.
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