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sveltekit-data-flow

Ensures proper data flow in Tasmanian-themed web apps.

3|1|Updated Jun 3, 2025
Search Tags:#sveltekit#serialization#data-flow#load-functions#server-load#universal-load#form-actions
One-click install
npx skills add https://github.com/Tobbe3108/GoPayShortcuts --skill sveltekit-data-flow-tobbe3108
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: sveltekit-data-flow
Source: https://github.com/Tobbe3108/GoPayShortcuts/tree/main/.opencode/skills/sveltekit-data-flow
Command: npx skills add https://github.com/Tobbe3108/GoPayShortcuts --skill sveltekit-data-flow-tobbe3108

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides clear guidance for implementing and debugging SvelteKit data flow between the server and the client, helping teams avoid common pitfalls in loading data, form actions, and invalidation.

Core Features & Use Cases

  • Server vs universal load decision guidance for +page.server.ts and +page.ts
  • Correct patterns for +page.server.ts form actions using fail(), redirect(), and error()
  • Data invalidation strategies like invalidateAll() to refresh layout data after auth or changes
  • Real-world scenarios: building dashboards, user profiles, and forms with robust serialization

Quick Start

Review the patterns and apply them to your SvelteKit project to ensure correct data flow between server and client.

Frequently Asked Questions about sveltekit-data-flow

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I choose between a SvelteKit server load and a universal load function?▼

Use SvelteKit server load functions for private database access and universal load functions when you need client-side execution or shared logic between server and browser environments.

How do I handle SvelteKit form action errors and invalid data submissions?▼

Use the fail() function in SvelteKit form actions to return validation errors alongside submitted form data, enabling progressive enhancement and preserving user input without clearing the form.

Why are my SvelteKit load function return values causing serialization errors?▼

SvelteKit load function return values cause serialization errors when they include non-serializable items like class instances or functions. Ensure all returned data is plain JSON-serializable to pass the server/client boundary.

What is the best way to refresh SvelteKit layout data after a user updates their profile?▼

Call invalidateAll() within your SvelteKit form action to refresh layout data after profile updates. This reruns all active load functions to fetch updated authentication state and user data.

When should I use redirect versus error in SvelteKit load functions and form actions?▼

Use redirect() in SvelteKit load functions and form actions to route unauthenticated users to login, and use error() to throw fatal HTTP status errors. Both halt execution and manage control flow securely.

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