Node.js Monorepo Template - Project Structure

This is a Node.js monorepo built with Turborepo, pnpm workspaces, and modern tooling, designed for building scalable server-side applications and shared libraries.

Repository Layout

Core Directories

• apps/ - Individual Node.js applications or services (deployable units).

  • Each subdirectory is typically a separate application (e.g., an API server, a background job processor).
  • Example: apps/api-service/ - could be an Express.js or NestJS application.
  • Example: apps/data-processor/ - could be a standalone Node.js script or service.

• packages/ - Shared libraries, utilities, and configurations used by applications in the apps/ directory or other packages.

  • packages/eslint-config/ - Shared ESLint configuration
  • packages/typescript-config/ - Shared TypeScript configuration
  • packages/hono-helpers/ - Hono framework utilities and middleware
  • packages/tools/ - CLI tools and development scripts
  • packages/workspace-dependencies/ - Shared dependencies management

Configuration Files

• package.json - Root package with workspace scripts and dev dependencies
• pnpm-workspace.yaml - Defines pnpm workspace structure
• turbo.json - Turborepo configuration for builds, tasks, and caching
• Justfile - Convenient command aliases for development
• tsconfig.json - Root TypeScript configuration
• .syncpackrc.cjs - Dependency version synchronization

Code Generation

• turbo/generators/ - Turbo gen templates for scaffolding new applications and packages.
  • templates/node-service/ - Example: Template for a basic Node.js service (e.g., using Express or Fastify).
  • templates/library-package/ - Template for a shared library package.
  • templates/package/ - Generic shared package template (as before, likely still useful). (Update these paths and descriptions to match your actual Node.js application/service templates.)

Build & Development

• .turbo/ - Turborepo cache and daemon files
• node_modules/ - Workspace dependencies (managed by pnpm)
• .github/workflows/ - CI/CD pipelines for testing and deployment

Key Concepts

• Monorepo Benefits: Shared dependencies, atomic commits, consistent tooling, easier refactoring across multiple Node.js applications and libraries.
• pnpm Workspaces: Efficient dependency management and linking for local development across packages.
• Turborepo: Build orchestration, intelligent caching, and parallelization of tasks like building, testing, and linting.
• Code Generation: Use just new-app (or your project's specific command) to scaffold new Node.js applications or services from predefined templates.