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What is Turborepo? A Guide to Faster Monorepos in 2026

Turborepo is a high-performance build system for JavaScript and TypeScript codebases that speeds up development by caching (storing) previous work so you never have to run the same task twice. By using Turborepo, teams can reduce build times by up to 80% through advanced techniques like Remote Caching and Task Orchestration. It is designed specifically to manage monorepos (single repositories containing multiple projects) with minimal configuration and maximum speed.

Why do developers use monorepos?

A monorepo (short for monolithic repository) is a single folder that holds multiple related projects, such as a website, a mobile app, and a shared library of code. Instead of having five different GitHub repositories for one product, you keep everything in one place. This makes it much easier to share code between the frontend and the backend without publishing private packages to the internet.

However, as a monorepo grows, it usually becomes very slow. If you change one line of code in a shared button, a standard setup might try to rebuild every single project in the folder, even if they didn't use that button. This "wait time" is what Turborepo solves by identifying exactly what changed and only running the necessary tasks.

Managing multiple projects in one folder often leads to "dependency hell" (a situation where different projects need different versions of the same tool). Turborepo works with package managers like pnpm or npm to keep these versions organized. It ensures that your shared code stays consistent across every app you build.

How does Turborepo make builds faster?

The "secret sauce" of Turborepo is a concept called Fingerprinting. When you run a command like build, Turborepo looks at the files you've changed, the environment variables (settings like API keys), and your installed dependencies. It then creates a unique hash (a digital fingerprint) for that specific task.

If you run the command again and the fingerprint hasn't changed, Turborepo doesn't actually run the code. Instead, it instantly replays the logs and restores the files from its local cache (a storage area on your computer for previous results). This turns a two-minute build process into a sub-second "HIT" that feels like magic.

Another key feature is Task Orchestration. In a traditional setup, you might have to build your "UI Library" first, wait for it to finish, and then build your "Web App." Turborepo understands the relationships between your projects and runs them in parallel (at the same time) whenever possible to maximize your computer's CPU power.

What do you need to get started?

Before setting up your first high-speed repository, you'll need a few modern tools installed on your machine. We recommend using the latest stable versions to ensure compatibility with Turborepo's newest features.

What You’ll Need:

  • Node.js 24.0+: The runtime environment that executes JavaScript on your computer. Download Node.js.
  • pnpm or npm: A package manager (a tool that installs code libraries). Turbo works best with pnpm due to its efficient storage.
  • A Code Editor: Visual Studio Code is the industry standard for most developers.
  • Basic Terminal Knowledge: You should know how to open a command prompt and type basic commands.

How do you create a new Turborepo?

The fastest way to understand how Turborepo works is to use their official starter template. This template sets up a workspace with a Next.js 16 app and a shared library automatically.

Step 1: Run the generator command Open your terminal and type the following command:

npx create-turbo@latest

What you should see: The terminal will ask you where you want to create the project. You can type ./my-turborepo and press Enter.

Step 2: Choose your package manager The installer will ask which package manager you want to use. Select pnpm if you have it installed, or npm if you are just starting out.

Step 3: Navigate into the folder Move into your new project directory so you can run commands:

cd my-turborepo

Step 4: Run the development server Start all the projects in your monorepo at once with this command:

npx turbo dev

What you should see: You will see logs from multiple apps (like web and docs) appearing in the same terminal window. Turborepo is running them both simultaneously for you.

How are the folders organized?

When you open your new project, the folder structure might look a bit different than a standard standalone app. Turborepo uses a "Workspaces" layout to keep things clean.

  • apps/: This folder contains your actual applications, like a Next.js website or a Vite dashboard. Each folder here is its own independent project.
  • packages/: This is where your shared code lives. You might have a ui folder here for buttons and headers, or a utils folder for math functions that both your apps use.
  • turbo.json: This is the "brain" of your project. It tells Turborepo which tasks depend on each other and which files should be cached.

In Next.js 16 projects, you'll notice that the apps/web folder looks like a normal website. The magic happens because that website "imports" code from the packages/ui folder. If you change a button in the UI package, Turborepo knows exactly which apps in the apps/ folder need to be updated.

What is the turbo.json file?

The turbo.json file is where you define your "Pipeline." A pipeline is just a set of rules for how your tasks (like build, lint, or test) should behave. In 2026, Turborepo has simplified this file to be more intuitive.

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

In this example, the dependsOn: ["^build"] line is very important. The ^ symbol tells Turborepo: "Before you build an app, make sure all the libraries it depends on are built first." The outputs section tells Turbo which folders to save in the cache so it can restore them later. Don't worry if this looks complex; the default settings provided by the starter template work for 99% of projects.

Common Gotchas for Beginners

It is normal to feel a bit overwhelmed when your terminal starts showing logs from three different places at once. Here are a few things to keep in mind as you learn.

  • Missing Environment Variables: If your build works locally but fails in the cloud, it's often because a "secret" (like an API key) wasn't included in the cache fingerprint. In modern Turborepo versions, the system tries to detect these automatically, but you should still double-check your .env files.
  • The "Internal" Package: When you add a new shared library in the packages/ folder, you must remember to add it to the package.json of your app. If you forget this step, your app won't know the library exists.
  • Caching "Dev" Mode: We've found that beginners sometimes try to cache the dev command. You generally shouldn't cache development mode because you want to see your changes in real-time as you type, rather than seeing a saved version from five minutes ago.

Next Steps

Now that you have a running Turborepo, the best thing to do is try breaking it! Go into the packages/ui folder, change a color, and see how the apps/web project updates instantly. Once you're comfortable, try adding a third app to the apps/ folder and see if you can make it use the same UI components.

As you grow, you might want to look into Remote Caching. This allows you to share your local cache with your teammates or your deployment server (like Vercel). This means if your coworker builds the project, your computer can download their results instead of building them from scratch yourself.

official Turborepo documentation

Read the Turborepo Documentation