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Design Systems

Component libraries, design tokens, style guides

282 bites

Test yourself: Top 30 Design Systems interview questionsMultiple choice, with the correct answer and why it is correct on every question. Free, no sign-in.

Everything in Design Systems, page 5

advanced1 min read

Designing a multi-step wizard form pattern

A wizard controller owns step index and shared data, each step validates itself and reports up, accumulated data persists across steps.

advanced1 min read

Architecting a composable DataTable API

Separate a headless data/state core from rendering, use a column-definition config with custom cell renderers, expose composition over dozens of flags.

intermediate1 min read

The slots pattern for a PageLayout component

Slots are named insertion points so a layout owns structure while consumers fill header, sidebar, and main, via named props or compound subcomponents.

intermediate2 min read

Decoupling Form state from its Field components

Form holds values, errors, and status in context, Fields self-register and read/write via a hook, validation composes per field.

intermediate1 min read

Designing a Modal with controlled open state

Parent owns isOpen and onClose, portal renders content with focus trap, children for static content, render prop when content needs modal state.

easy1 min read

Designing a responsive Grid with breakpoint props

Accept per-breakpoint column props, map them to CSS Grid and media queries or container queries, expose a gap prop.

easy1 min read

Building a flexible Card with optional content

Use optional props or named slots for image, title, and text, conditionally render present ones, and prefer composition for ordering.

easy1 min read

Composing Input and Button into a SearchForm

Wrap Input and Button in a form, expose value/placeholder props, emit onSearch on submit, keep it controlled.

advanced1 min read

Headless components and a headless Combobox

A headless component owns state, logic, and accessibility but renders no UI, exposing state and prop-getters so consumers supply markup.

advanced1 min read

Architecting global and local theming with context

A top-level provider supplies global tokens, nested providers merge local overrides, components read the nearest theme, often backed by CSS variables.

intermediate1 min read

Choosing a spacing scale for a design system

A numeric base-grid gives predictable math, semantic t-shirt names give readable intent, often combine them.

intermediate1 min read

Component Stability Index

A component stability index is a maturity signal that tells consumers how safe a design-system component is to use, from experimental to stable to deprecated, setting expectations about API churn and supporting confident adoption decisions.

intermediate1 min read

Automated Release Pipeline

An automated release pipeline turns merged design-system changes into published, versioned packages without manual steps, using semantic versioning and changelogs so consumers can upgrade safely and the team ships small changes frequently and reliably.

intermediate1 min read

Structuring color tokens for a new app

Primitive palette, semantic role tokens, optional component tokens, theming benefit.

intermediate1 min read

A simple automatable metric for dev-time savings

Component coverage or cycle time, gathered automatically, compared across adoption levels.

intermediate1 min read

Framework-agnostic components across React, Vue, Angular

Web components for one core, framework wrappers for ergonomics, codegen as an alternative, with their costs.

intermediate1 min read

Documentation for a new Card component

Usage guidance and do/don't, variants, accessibility, code examples, composition.

intermediate1 min read

Design tokens for multi-brand button theming

Tokens as named design decisions, primitive-versus-semantic layers, per-brand themes mapping semantic to primitive.

intermediate1 min read

End-to-end process for a Modal props API break

Justify and design the change, additive rollout with deprecation, major release plus codemod, comms and adoption tracking.

intermediate1 min read

Measuring designer efficiency from Figma data

Library component usage and detach rates from Figma, time-to-mockup, override frequency via the API.

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