Monorepo Mastery: npm Workspaces & npx Unlocked

Tue, 10 Feb 2026 00:00:00 +0000

Monorepo Mastery: npm Workspaces & npx Unlocked

Native monorepo management with npm workspaces and on-demand package execution with npx. Node.js v22.x, npm v10.x (as of 2026-02-10).

Core Setup: npm Workspaces

Initialize a monorepo and define workspace roots in the root package.json to enable npm’s native monorepo capabilities.

// root/package.json
{
"name": "my-monorepo",
"version": "1.0.0",
"private": true, // Prevents accidental publishing of the root package
"workspaces": [ // Defines directories containing workspace packages
"packages/*", // Example: packages/ui-lib, packages/utils
"apps/*" // Example: apps/web, apps/admin
],
"scripts": {
"build": "npm run build --workspaces", // Runs 'build' script in all workspaces
"test": "npm test --workspaces" // Runs 'test' script in all workspaces
},
"devDependencies": {
"typescript": "^5.3.3" // Common dev dependencies are often hoisted to the root
}
}

Each workspace package also has its own package.json.

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Monorepo Mastery: npm Workspaces & npx Unlocked

Monorepo Mastery: npm Workspaces & npx Unlocked

Core Setup: npm Workspaces