What is svelte-5-migration?

A migration guide for moving applications from Svelte 3 or 4 to Svelte 5, a newer version of the Svelte web framework. It covers conversion patterns, compatibility rules, and known problems.

Converting Svelte components and patterns, handling code that mixes old and new Svelte versions, and checking for common migration issues.

It helps developers plan the upgrade in stages and identify changes that may break existing code.

svelte-5-migration — Plugin for Claude Code by fubits1/svelte-skills

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/fubits1/svelte-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/fubits1/svelte-skills/svelte-5-migration/github.svg)](https://agentmods.dev/plugins/fubits1/svelte-skills/svelte-5-migration)

Your own site

<a href="https://agentmods.dev/plugins/fubits1/svelte-skills/svelte-5-migration"><img src="https://agentmods.dev/badge/plugins/fubits1/svelte-skills/svelte-5-migration/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/fubits1/svelte-skills/svelte-5-migration"><img src="https://agentmods.dev/badge/plugins/fubits1/svelte-skills/svelte-5-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill cost 65 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 86% copy Near-identical to another mod in the catalogue.

Security

Grade A, and why

svelte-5-migration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

86% identical to svelte-skills marketplace — 72 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/svelte-5-migration/.claude-plugin/plugin.json · 10 lines

What it actually says

{
  "name": "svelte-5-migration",
  "description": "Svelte 3/4 to 5 migration — phased workflow, pattern conversions, interop rules, known traps.",
  "version": "0.11.0",
  "author": {
    "name": "fubits1"
  },
  "icon": "./.claude-plugin/icon.png"
}

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 65 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Skill migration-svelte-5 A 65 tokens

Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

icon.png 4.0 KB

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

11d ago Changed fb343e0484be
12d ago Changed · +1 lines 9e4e03f021e7
1mo ago Changed 88c79cf18115
2mo ago First seen · 9 lines scan A 8a6654f1ee8a

Subscribe to this mod's changes

svelte-5-migration is a plugin published in the GitHub repository fubits1/svelte-skills (10 stars, last pushed 12d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. It is 86% identical to svelte-skills marketplace, differing in 72 lines, and is treated as a copy.

Frontend Vue and Svelte

svelte-5-migration next to 6 plugins from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
svelte-5-migrationfubits1/svelte-skills	Plugin	10	12d ago	MIT	A	—	Claude Code
laravel-pluginAratKruglik/claude-sdlc	Plugin	55	11d ago	MIT	A	—	Claude Code
svelte-lspzircote/svelte-lsp	Plugin	5	4d ago	MIT	A	—	Claude Code
arch-patternsJeonJe/claude-plugins	Plugin	3	16d ago	MIT	A	—	Claude Code
humanizerblader/humanizer	Plugin	65k	10d ago	MIT	A	—	Claude Code
claude-plugins-official marketplaceanthropics/claude-plugins-official	Plugin	46k	yesterday	Apache-2.0	A	—	Claude Code
nextjsvercel/next.js	Plugin	143k	yesterday	MIT	A	—	Claude Code