Turborepo Monorepo Patterns

Use when setting up or managing a Turborepo-based monorepo. Covers workspace configuration, task pipelines, caching strategies, shared packages, and CI/CD integration for multi-package repositories with Turborepo.

Monorepo with Turborepo

A practical guide to building and managing scalable monorepos using Turborepo.

When to Use

• Setting up a new monorepo with multiple apps/packages
• Optimizing build/test pipelines with caching
• Sharing UI components, utilities, or configs across apps
• Configuring CI for monorepo with selective builds

Core Workflow

1. Initialize Monorepo

bash

npx create-turbo@latest my-monorepo
cd my-monorepo

Workspace layout:

text

my-monorepo/
├── apps/
│   ├── web/          # Next.js app
│   └── docs/         # Docusaurus
├── packages/
│   ├── ui/           # Shared components
│   ├── config/       # Shared ESLint/TS configs
│   └── utils/        # Shared utilities
├── turbo.json
└── package.json

2. Configure turbo.json Pipeline

json

{
  "$schema": "https://turbo.build/schema.json",
  "tasks": {
    "build": {
      "dependsOn": ["^build"],
      "outputs": [".next/**", "!.next/cache/**", "dist/**"]
    },
    "test": {
      "dependsOn": ["^build"],
      "outputs": ["coverage/**"]
    },
    "lint": {
      "outputs": []
    },
    "dev": {
      "cache": false,
      "persistent": true
    },
    "type-check": {
      "dependsOn": ["^build"],
      "outputs": []
    }
  }
}

3. Package.json Root Config

json

{
  "name": "my-monorepo",
  "private": true,
  "workspaces": ["apps/*", "packages/*"],
  "scripts": {
    "build": "turbo build",
    "dev": "turbo dev",
    "lint": "turbo lint",
    "test": "turbo test",
    "type-check": "turbo type-check",
    "clean": "turbo clean && rm -rf node_modules"
  },
  "devDependencies": {
    "turbo": "latest"
  }
}

4. Shared Package Setup (packages/ui)

json

// packages/ui/package.json
{
  "name": "@repo/ui",
  "version": "0.0.1",
  "exports": {
    "./*": {
      "import": "./src/*.tsx",
      "require": "./src/*.tsx"
    }
  },
  "scripts": {
    "build": "tsc",
    "lint": "eslint src/",
    "dev": "tsc --watch"
  }
}

5. Remote Caching (Vercel)

bash

npx turbo login
npx turbo link

Or with custom remote cache:

bash

turbo build --api="https://your-cache-server.com" --token="$TURBO_TOKEN" --team="your-team"

6. Selective Builds (Filter)

bash

# Build only affected packages
turbo build --filter=...[HEAD^1]

# Build specific app and its dependencies
turbo build --filter=web...

# Exclude a package
turbo build --filter=!docs

7. CI/CD Integration (GitHub Actions)

See references/ci-github-actions.yml for a complete workflow.

Key Principles

• ^ prefix in dependsOn means "build all dependencies first"
• outputs defines what gets cached; be explicit
• cache: false for dev/watch tasks
• persistent: true for long-running processes
• Always define exports in package.json for shared packages

Troubleshooting

Issue	Solution
Cache miss every run	Check outputs paths are correct
Circular dependency	Use turbo graph to visualize
Package not found	Verify workspaces glob in root package.json
Slow cold build	Enable remote caching