More in Design Systems — page 6
Linking form-component adoption to fewer a11y bugs
WHAT IT TESTS: designing a sound measurement, not just claiming impact. OUTLINE: define both variables, segment by adoption level, control confounders, watch correlation-versus-causation.
Gradual design system adoption in legacy code
WHAT IT TESTS: incremental migration of a large legacy codebase. OUTLINE: coexistence strategy, codemods for mechanical swaps, lint rules to block regressions, prioritize high-traffic surfaces.
Measuring design system adoption and health
WHAT IT TESTS: quantifying adoption with concrete, automatable metrics. OUTLINE: component coverage and version spread from code scans, usage analytics, issue and satisfaction signals.
Technical and comms plan for a Button break
WHAT IT TESTS: pairing technical migration tooling with communication. OUTLINE: additive-first then deprecate, major semver, codemod and guide, multi-channel early comms with adoption tracking.
Critical a11y fix requiring a breaking API change
WHAT IT TESTS: balancing urgent accessibility risk against breaking-change discipline. OUTLINE: ship a safe interim fix, plan the breaking API as a major with deprecation and codemod, communicate urgency.
Design systems across micro-frontends
WHAT IT TESTS: adapting a design system to independently deployed front ends. OUTLINE: shared singletons and version alignment, token-based theming, distribution via shared scopes, stronger governance.
Governance for accessibility regressions
WHAT IT TESTS: a repeatable a11y governance loop across consuming products. OUTLINE: detection via audits and monitoring, triage with severity and ownership, remediation SLAs, prevention feedback.
Automated a11y testing in CI and its limits
WHAT IT TESTS: building a11y checks into CI while knowing their ceiling. OUTLINE: axe-core in unit and story tests, fail the build on violations, plus manual screen-reader and keyboard testing.
Architecting a federated documentation site
WHAT IT TESTS: aggregating docs from many repos into one site. OUTLINE: docs-as-code with a manifest, CI publishing artifacts, a build that pulls and merges, unified deploy. RED FLAG: manually copy-pasting docs between repos with no automated aggregation.
Documenting accessibility per component
WHAT IT TESTS: making accessibility actionable, not a generic page. OUTLINE: per-component a11y sections, keyboard tables, ARIA roles and states, live examples. RED FLAG: one global accessibility page with no component-specific keyboard or ARIA detail.
Composite components versus layout primitives
WHAT IT TESTS: balancing consistency against flexibility in API design. OUTLINE: primitives give flexibility and composition, composites enforce consistency, choose by reuse and variation.
Rolling out a breaking change to a shared Button
WHAT IT TESTS: managing a breaking change in a high-blast-radius component. OUTLINE: major semver bump, deprecation period, codemod and migration guide, staged comms. RED FLAG: forcing an immediate hard cutover with no deprecation window or upgrade tooling.
Versioning and shipping design tokens via NPM
WHAT IT TESTS: package versioning discipline for a shared dependency. OUTLINE: semver, deprecate-before-delete with aliases, codemods and migration guides. RED FLAG: silently renaming tokens and bumping a minor version, breaking every consumer.
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
WHAT IT TESTS: Tiered token separation and runtime strategy for multi-theme systems. ANSWER OUTLINE: Three tiers, CSS custom properties for live switching, and layered overrides. RED FLAG: Hardcoded colors in components or CSS rebuilds on theme change.