# @yarnpkg/builder A CLI tool designed for creating, building, and managing complex plugins. > This version of the builder is for creating plugins for Yarn 3.x. Yarn 3 plugins are not compatible with Yarn 2 installations, however Yarn 2 plugins are usually compatible with Yarn 3. If you wish to create plugins for Yarn 2, please use v2.x of the builder (`yarn add @yarnpkg/builder@^2`). ## Features - `builder new plugin` command for scaffolding new plugins - `builder build plugin` command for building complex plugins - supports TypeScript out-of-the-box - uses ESBuild internally, providing treeshaking, minification, and various other optimizations out-of-the-box ## Installation `yarn add -D @yarnpkg/builder` ## Commands - [`builder new plugin`](https://yarnpkg.com/builder/cli/new/plugin) - Create a new plugin. - [`builder build plugin`](https://yarnpkg.com/builder/cli/build/plugin) - Build a local plugin. - [`builder build bundle`](https://yarnpkg.com/builder/cli/build/bundle) - Build a yarn.js bundle from our repository **(internal)**.
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