> monorepo-navigator
Monorepo Navigator
curl "https://skillshub.wtf/alirezarezvani/claude-skills/monorepo-navigator?format=md"Monorepo Navigator
Tier: POWERFUL
Category: Engineering
Domain: Monorepo Architecture / Build Systems
Overview
Navigate, manage, and optimize monorepos. Covers Turborepo, Nx, pnpm workspaces, and Lerna. Enables cross-package impact analysis, selective builds/tests on affected packages only, remote caching, dependency graph visualization, and structured migrations from multi-repo to monorepo. Includes Claude Code configuration for workspace-aware development.
Core Capabilities
- Cross-package impact analysis — determine which apps break when a shared package changes
- Selective commands — run tests/builds only for affected packages (not everything)
- Dependency graph — visualize package relationships as Mermaid diagrams
- Build optimization — remote caching, incremental builds, parallel execution
- Migration — step-by-step multi-repo → monorepo with zero history loss
- Publishing — changesets for versioning, pre-release channels, npm publish workflows
- Claude Code config — workspace-aware CLAUDE.md with per-package instructions
When to Use
Use when:
- Multiple packages/apps share code (UI components, utils, types, API clients)
- Build times are slow because everything rebuilds when anything changes
- Migrating from multiple repos to a single repo
- Need to publish packages to npm with coordinated versioning
- Teams work across multiple packages and need unified tooling
Skip when:
- Single-app project with no shared packages
- Team/project boundaries are completely isolated (polyrepo is fine)
- Shared code is minimal and copy-paste overhead is acceptable
Tool Selection
| Tool | Best For | Key Feature |
|---|---|---|
| Turborepo | JS/TS monorepos, simple pipeline config | Best-in-class remote caching, minimal config |
| Nx | Large enterprises, plugin ecosystem | Project graph, code generation, affected commands |
| pnpm workspaces | Workspace protocol, disk efficiency | workspace:* for local package refs |
| Lerna | npm publishing, versioning | Batch publishing, conventional commits |
| Changesets | Modern versioning (preferred over Lerna) | Changelog generation, pre-release channels |
Most modern setups: pnpm workspaces + Turborepo + Changesets
Turborepo
→ See references/monorepo-tooling-reference.md for details
Workspace Analyzer
python3 scripts/monorepo_analyzer.py /path/to/monorepo
python3 scripts/monorepo_analyzer.py /path/to/monorepo --json
Also see references/monorepo-patterns.md for common architecture and CI patterns.
Common Pitfalls
| Pitfall | Fix |
|---|---|
Running turbo run build without --filter on every PR | Always use --filter=...[origin/main] in CI |
workspace:* refs cause publish failures | Use pnpm changeset publish — it replaces workspace:* with real versions automatically |
| All packages rebuild when unrelated file changes | Tune inputs in turbo.json to exclude docs, config files from cache keys |
| Shared tsconfig causes one package to break all type-checks | Use extends properly — each package extends root but overrides rootDir / outDir |
| git history lost during migration | Use git filter-repo --to-subdirectory-filter before merging — never move files manually |
| Remote cache not working in CI | Check TURBO_TOKEN and TURBO_TEAM env vars; verify with turbo run build --summarize |
| CLAUDE.md too generic — Claude modifies wrong package | Add explicit "When working on X, only touch files in apps/X" rules per package CLAUDE.md |
Best Practices
- Root CLAUDE.md defines the map — document every package, its purpose, and dependency rules
- Per-package CLAUDE.md defines the rules — what's allowed, what's forbidden, testing commands
- Always scope commands with --filter — running everything on every change defeats the purpose
- Remote cache is not optional — without it, monorepo CI is slower than multi-repo CI
- Changesets over manual versioning — never hand-edit package.json versions in a monorepo
- Shared configs in root, extended in packages — tsconfig.base.json, .eslintrc.base.js, jest.base.config.js
- Impact analysis before merging shared package changes — run affected check, communicate blast radius
- Keep packages/types as pure TypeScript — no runtime code, no dependencies, fast to build and type-check
> related_skills --same-repo
> quality-manager-qmr
Senior Quality Manager Responsible Person (QMR) for HealthTech and MedTech companies. Provides quality system governance, management review leadership, regulatory compliance oversight, and quality performance monitoring per ISO 13485 Clause 5.5.2.
> qms-audit-expert
ISO 13485 internal audit expertise for medical device QMS. Covers audit planning, execution, nonconformity classification, and CAPA verification. Use for internal audit planning, audit execution, finding classification, external audit preparation, or audit program management.
> mdr-745-specialist
EU MDR 2017/745 compliance specialist for medical device classification, technical documentation, clinical evidence, and post-market surveillance. Covers Annex VIII classification rules, Annex II/III technical files, Annex XIV clinical evaluation, and EUDAMED integration.
> isms-audit-expert
Information Security Management System (ISMS) audit expert for ISO 27001 compliance verification, security control assessment, and certification support. Use when the user mentions ISO 27001, ISMS audit, Annex A controls, Statement of Applicability (SOA), gap analysis, nonconformity management, internal audit, surveillance audit, or security certification preparation. Helps review control implementation evidence, document audit findings, classify nonconformities, generate risk-based audit plans,