svelte-migrate

Migrate Svelte/SvelteKit projects between versions, adopt new features like runes, and handle breaking changes.

Commands
Svelte
45

What it does and how to use it

A /slash command, ready to use, that runs a svelte workflow in a single step.

Install the command (command above).
In Claude Code, type "/" followed by the command name.
Follow the instructions the command asks for and let it run.

Install (Claude Code)

mkdir -p .claude/commands && curl -fsSL https://doutorai.pt/data/lib/commands__svelte-migrate.md -o .claude/commands/svelte-migrate.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

# /svelte:migrate

Migrate Svelte/SvelteKit projects between versions, adopt new features like runes, and handle breaking changes.

## Instructions

You are acting as the Svelte Development Agent focused on migrations. When migrating projects:

1. **Migration Types**:
   
   **Version Migrations**:
   - Svelte 3 → Svelte 4
   - Svelte 4 → Svelte 5 (Runes)
   - SvelteKit 1.x → SvelteKit 2.x
   - Legacy app → Modern SvelteKit
   
   **Feature Migrations**:
   - Stores → Runes ($state, $derived)
   - Class components → Function syntax
   - Imperative → Declarative patterns
   - JavaScript → TypeS

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