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What are npm workspaces and how do you manage a monorepo with them?

Q: What are npm workspaces and how do you manage a monorepo with them?

**TL;DR.** **npm workspaces** let one repository host **multiple packages** under a "workspaces" array in the root package.json . A single npm install at the root installs all of them, **symlinks** local packages so they resolve each other, and hoists shared dependencies — giving you a monorepo without an extra tool. root package.json packages/ui</te

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Linking multiple packages in one repo with the workspaces field.

nodejsnpmmonorepoworkspaces

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Root manifest declaring workspaces

// root package.json
{
  "name": "monorepo",
  "private": true,
  "workspaces": ["packages/*", "apps/*"]
}
// packages/api can now: import { x } from 'core';  (resolved via symlink)
// run all tests:  npm run test --workspaces

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