Overview

Migrating an existing Next.js application to a Turborepo monorepo requires careful planning. This lesson outlines the strategic steps and considerations to ensure a smooth and successful transition.

Key Points

• Identify Shared Code: Before starting, pinpoint reusable components, utility functions, configuration files, and hooks that can be extracted into shared packages.

• Define Workspaces: Determine the structure of your monorepo. Typically, this involves an apps directory for your Next.js applications and a packages directory for shared libraries (e.g., ui, utils, eslint-config).

• Assess Existing Build Scripts: Review your current package.json scripts. You'll need to adapt these to work within Turborepo's task pipeline system.

• Version Control Strategy: Decide how you will manage versions across your packages. For internal packages, often a single version (* or workspace:) is sufficient, but external npm package dependencies need careful management.

• Gradual Migration: Consider migrating one application or extracting one shared package at a time to minimize disruption and test the new setup incrementally.

• Tooling Consistency: Plan for consistent linting, formatting, and TypeScript configurations across all workspaces.

Quick Example

Potential candidates for shared packages:

• packages/ui: Contains generic React components (buttons, cards, forms).

• packages/config: Houses shared eslint, prettier, tsconfig, and tailwind configurations.

• packages/utils: Offers common utility functions (date formatting, API helpers).

Summary

Thorough planning is the cornerstone of a successful monorepo migration. By identifying shared assets, structuring your workspaces logically, and anticipating tooling adjustments, you can streamline the process and maximize the benefits of your new monorepo setup.