Monorepos – Lerna, Yarn Workspaces, and Nx

Yarn Workspaces (simplest)

// package.json (root)
{
  "private": true,
  "workspaces": ["packages/*"]
}

Each package gets its own package.json. Dependencies are hoisted.

Lerna (classic)

npm i -g lerna
lerna init

lerna.json

{ "packages": ["packages/*"], "version": "independent" }

Run lerna bootstrap to link local packages.

Nx (advanced, with caching)

npx create-nx-workspace@latest myorg

Choose npm + TypeScript. Nx provides powerful generators (nx generate @nrwl/react:component) and affected commands.

Publishing a package from a monorepo

cd packages/utils
npm version patch
npm publish --access public