Svelte Component Library Design Training

Design and build production-quality component libraries with this advanced 3-day training. Learn to create reusable, accessible, and well-documented Svelte components that your team can share across projects and publish to npm.

Training Details


Duration	3 days (24 hours)
Level	Advanced
Delivery	In-person, Live online, Hybrid
Certification	N/A

Who Is This For?

Senior frontend developers building shared component systems
Design system engineers creating organizational UI libraries
Open-source maintainers packaging Svelte components
Team leads establishing component standards and patterns
Developers with accessibility and design system experience

Learning Outcomes

After completing this training, you’ll be able to:

Architect a Svelte component library with consistent API patterns
Build accessible components following WAI-ARIA guidelines
Implement flexible theming with CSS custom properties and design tokens
Package and publish components to npm with proper TypeScript definitions
Create interactive documentation with Storybook or Histoire
Establish testing strategies for visual regression and accessibility compliance

Detailed Agenda

Day 1: Component Architecture

Module 1: Library Architecture

Component library project structure
Monorepo vs single-package strategies
Build tooling: svelte-package and Vite library mode
TypeScript integration and type exports
Hands-on: Scaffold a component library project

Module 2: Component API Design

Consistent prop naming conventions
Event forwarding and custom events
Slot-based composition patterns
$$restProps for HTML attribute passthrough
Action-based behavior composition
Hands-on: Design a button component family

Module 3: Accessibility Foundations

WAI-ARIA roles, states, and properties
Keyboard navigation and focus management
Screen reader testing and NVDA/VoiceOver
Color contrast and motion preferences
Hands-on: Build accessible form controls

Day 2: Theming and Advanced Patterns

Module 4: Theming System

CSS custom properties for component theming
Design tokens: naming, organization, and tooling
Light/dark mode and system preference detection
Runtime theme switching and persistence
Hands-on: Implement a complete theming system

Module 5: Advanced Component Patterns

Compound components (Tabs, Accordion, Menu)
Polymorphic components with as prop
Headless components for maximum flexibility
Portal and overlay patterns
Hands-on: Build a compound dropdown menu

Module 6: Transitions and Animation

Coordinated transitions across component groups
Animation tokens and consistent motion
Reduced motion support
Spring-based physics animations
Hands-on: Create an animated toast notification system

Day 3: Packaging, Testing, and Documentation

Module 7: Packaging and Distribution

svelte-package configuration and output
Package.json exports and entry points
Peer dependencies and version management
CSS bundling strategies for consumers
Hands-on: Package and publish to npm registry

Module 8: Testing Strategy

Component testing with Svelte Testing Library
Visual regression testing with Playwright
Accessibility testing with axe-core
Snapshot testing and change detection
Hands-on: Build a comprehensive test suite

Module 9: Documentation

Interactive documentation with Histoire
Component playground and live examples
API documentation generation from TypeScript
Changelog and versioning practices
Hands-on: Create a documentation site for your library

Prerequisites

Strong Svelte experience (components, stores, lifecycle)
Understanding of CSS architecture and custom properties
Familiarity with npm package management
Basic accessibility knowledge helpful

Delivery Formats

Format	Description
In-Person	On-site at your company’s location, hands-on with direct interaction
Live Online	Interactive virtual sessions with screen sharing and real-time labs
Hybrid	Combination of on-site and remote sessions, flexible scheduling

All formats include hands-on labs, course materials, library starter templates, and post-training support.