Skills Guide

Complete Module Migration

VerifiedCaution

Orchestrates a six-phase migration of an entire module to the target architecture defined in docs/ARCHITECTURE.md. Each phase (Analysis, Structure, Types, Services, State, Components, Review) requires user approval before proceeding, with validation steps after each phase. Ideal when migrating a complex module that touches all layers: files, types, services, state, and components.

Download and use
Sby Skills Guide Bot
DevelopmentAdvanced
6/2/2026
Claude Code
#migration#module-migration#architecture#svelte#sveltekit

Recommended for

Backend developerClaude CodeCode reviewFrontend developerFullstack developerRefactoring

Automated summary

Migrates an entire module to the target architecture through six phases with approval gates.

Strengths

  • Structured phase-based process with intermediate validation
  • Covers full migration scope: analysis, structure, types, services, state, and components
  • Automatically validates build, svelte-check, and tests after each phase

Limitations

  • Requires a target architecture defined in docs/ARCHITECTURE.md
  • Relies on @migrator tool for coordination, not specified here
  • Can be overkill for simple modules
When to use it

Use this skill when you need to migrate an existing module to a new Svelte/SvelteKit architecture.

When not to use it

Do not use it for one-off changes or modules that don't require a full migration.

Security analysis

Caution
Quality score85/100

The skill uses Bash within a controlled migration workflow, but Bash is inherently powerful; there is no explicit destructive or exfiltrating instruction, but caution is warranted.

Findings
  • •Uses Bash for build, svelte-check, and test validation, which could execute arbitrary commands if module path or configuration is malicious.
How this analysis is made

Examples

Migrate user module
Migrate the user module at src/lib/user to the target architecture from docs/ARCHITECTURE.md
Migrate auth module
Perform a full module migration for src/routes/auth following the migration process with approval gates

name: migration-migrate-module description: "Use when a complete module needs migration to the target architecture — runs 6 phases with approval gates." user-invocable: true argument-hint: "[module-path]" allowed-tools: Read, Write, Edit, Bash, Glob, Grep

Migrate an entire module to the target architecture from docs/ARCHITECTURE.md.

Module/Path: $ARGUMENTS

Steps

Use @migrator to coordinate the full migration in phases:

  1. Phase 0 -- Analysis: Map the module (files, Svelte 4 vs 5 patterns, JS vs TS, SvelteKit 1 vs 2 patterns, dependencies)
  2. Phase 1 -- Structure: Create src/lib/modules/[name]/ and route files, move existing files
  3. Phase 2 -- Types: Create .types.ts + .contracts.ts + adapter
  4. Phase 3 -- Services: Migrate to pure service (no try/catch, native fetch)
  5. Phase 4 -- State: Server state -> SvelteKit load functions, Client state -> Svelte stores
  6. Phase 5 -- Components: Svelte 4 -> 5 runes + composition (see conversion table)
  7. Phase 6 -- Review: Validate conformance, check for remaining legacy patterns

Validate build/svelte-check/tests after each phase. Ask for approval before each phase.

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/complete-module-migration-mm5t8bc2' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/complete-module-migration-mm5t8bc2/download' --output '.skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md.part' && mv '.skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md.part' '.skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

Tools declared by the author (check availability in your agent): Read, Write, Edit, Bash, Glob, Grep

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md' && test -s '.skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/migration-migrate-module' && cp -R '.skill-downloads/complete-module-migration-mm5t8bc2' '.claude/skills/migration-migrate-module'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/complete-module-migration-mm5t8bc2'

openskills read 'complete-module-migration-mm5t8bc2'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/complete-module-migration-mm5t8bc2/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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