Or install Yarn per project using npx: npx yarn. Use npm install yarn with the -g or -global flags to install Yarn globally. For Gatsby core development, you’ll need Yarn version 1.0.2 or later.Īlthough the Yarn documentation discourages it, you can also install Yarn using npm or npx. Choose the binary package for your operating system. You’ll need to install Yarn separately from Node. It resolves duplicate dependencies so that a package is only downloaded once.Īs a result, installing or updating a monorepo often takes less time with Yarn than with npm.It caches previously downloaded packages.Gatsby core uses a monorepo pattern for its code.Īs a monorepo adds projects and contributors, the number and size of its dependencies also increases. A monolithic repository, or monorepo, contains the code for many different projects in a single repository. To avoid confusion and possible conflicts with your dependencies, Gatsby recommends using npm for site development.Įngineers from Facebook, Google, Exponent, and Tilde launched Yarn in 2016 to improve package management for large-scale, monolithic repositories.

Note: Most tutorials and site development examples from the Gatsby docs use npm. For Gatsby site development, you can use Yarn or npm. Gatsby theme development also uses Yarn workspaces. Gatsby core uses Yarn’s workspaces feature to manage dependencies. Contributing to Gatsby core requires Yarn. It’s an alternative to Node’s standard package manager, npm. Yarn is a package manager for the Node.js JavaScript runtime. Learn what the Yarn package manager is, how to use it, and how it fits in to the Gatsby ecosystem.

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