Tooling2026-05-17
Yarn
Also known as: Yarn Berry / Yarn v4 / yarn classic
Facebook's JavaScript package manager. Yarn v1 introduced a reliable lockfile; Yarn Berry Plug'n'Play eliminates the node_modules directory.
Overview
Yarn predates the modern npm and delivers reliable installs via yarn.lock and built-in workspaces for monorepos. Yarn Berry's Plug'n'Play removes node_modules entirely, though VSCode integration needs some configuration.
Usage in React Native and Expo
Yarn v1 was the long-standing default in React Native projects. Expo now supports both pnpm and Yarn. See the React Native complete guide 2026 for setup examples.
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