monorepo-navigator

name	monorepo-navigator
description	Multiple packages/apps share code (UI components, utils, types, API clients)
executor	HYBRID
skill_id	engineering.cs-engineering.monorepo-navigator
status	ADOPTED
security	{"level":"standard","pii":false,"approval_required":false}
anchors	["engineering"]
tier	2
input_schema	[{"name":"code_or_task","type":"string","description":"Code snippet, script, or task description to process","required":true}]
output_schema	[{"name":"result","type":"string","description":"Primary output from monorepo navigator"}]

Monorepo Navigator

Tier: POWERFUL
Category: Engineering
Domain: Monorepo Architecture / Build Systems

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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.

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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

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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

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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