How to customize animations in Svelte Stepper?

Use the stepIntroTransition and stepOutroTransition props with Svelte transition functions like fly or scale, and set parameters such as duration and direction based on navigation flow, as shown in the README examples.

Svelte Stepper vs using a basic Svelte store for multi-step forms?

Svelte Stepper handles navigation logic, animations, and context automatically, whereas a basic store requires manual step management. Stepper is better for complex flows, but for simple cases, a store might be lighter and sufficient.

Can Svelte Stepper work with SvelteKit for server-side rendering?

Yes, it can be integrated into SvelteKit projects, but since it relies on client-side interactions and animations, server-side rendering may not fully capture dynamic aspects without proper hydration and JavaScript execution.

How to handle form validation across steps in Svelte Stepper?

Leverage the context API to store form data and implement validation logic within each step component. Control navigation by disabling stepController events until validation passes, ensuring data integrity.

Is Svelte Stepper accessible for screen readers?

Accessibility depends on developer implementation; the library is headless, so you must add ARIA attributes, keyboard navigation, and focus management in your custom step components to ensure compliance.

What are the performance impacts of using Svelte Stepper?

Performance is generally efficient due to Svelte's compiled nature, but complex animations or many steps can affect load times. Optimize by simplifying transitions and lazy-loading step components if needed.

svelte-stepper

Sveltev0.2.2

A headless Svelte library for building animated multi-step flows with full control over layout and transitions.

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What is svelte-stepper?

Svelte Stepper is a library for creating animated, multi-step flows in Svelte applications. It provides a headless architecture that handles navigation, animations, and state management while allowing developers to define custom step components. This solves the problem of building complex user journeys like multi-step forms, onboarding sequences, or interactive wizards without imposing design decisions.

Target Audience

Svelte developers building applications that require multi-step user flows, such as complex forms, onboarding processes, or interactive wizards. It's particularly suited for those who need full control over step layout and styling.

Value Proposition

Developers choose Svelte Stepper for its headless approach that provides navigation logic while letting them control step layout, styles, and transitions. Its unique selling points include built-in TypeScript support, automatic height-adjusting animations, a context API for multi-step forms, and side-step functionality for temporary flow diversions.

Overview

🚶 A simple library for building delightfully animated stepped flows with Svelte.

Use Cases

Best For

Building multi-step forms where data needs to be collected incrementally across several steps

Related Projects

Community-curated · Updated weekly · 100% open source

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GitHub

179 stars5 forks0 contributors

Creating interactive onboarding sequences or product tours in Svelte applications

Implementing complex user journeys like wizards or guided configuration flows

Developing applications that require temporary diversion to different step sequences (side-steps)

Projects needing fully customizable step transitions and animations

TypeScript projects requiring type-safe step components and props

Not Ideal For

Projects needing out-of-the-box styled stepper components without custom CSS work
Applications that must function with JavaScript disabled or have strict no-JS requirements
Simple user flows where basic router or state management could suffice, avoiding library overhead

Pros & Cons

Pros

Headless Flexibility

Provides full control over step layout and styling, as the library steps through whatever components you give it without imposing design decisions, ideal for custom implementations.

Type-Safe Development

Built entirely in TypeScript with fully typed interfaces for step components and props, ensuring type safety out of the box and reducing runtime errors.

Automatic Animations

Transitions steps smoothly with adjustable height and customizable transition functions, as shown in the demo with sleek default animations.

Context for Forms

Includes a context API using Svelte writable stores to share data across steps, enabling advanced use cases like multi-step form data collection.

Side-Steps Feature

Supports temporary diversion to different step sequences and return, allowing complex flow management without breaking the main journey, as detailed in the sidestep section.

Cons

No Built-In Styling

Being headless, it requires developers to design and style every step from scratch, which can be time-consuming and resource-intensive for teams lacking CSS expertise.

Svelte-Only Lock-In

Tied exclusively to Svelte, making it unsuitable for projects using other frameworks or those considering future migration, limiting its versatility.

Complex Animation Setup

Customizing transitions requires familiarity with Svelte's transition functions and parameters, which adds a learning curve and potential for errors in complex animations.

Frequently Asked Questions

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Svelte

number-flow

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