Svelte 4 to 5 Migration

Migrate individual Svelte files from v4 to v5 runes syntax.

Usage

When the user provides a file path, migrate that specific file following the patterns below.

Migration Patterns

1. Props: export let → $props()

Before:

<script lang="ts">
  export let name: string;
  export let count = 0;
  export let optional: string | undefined = undefined;