@scope/package-name — install and use scoped npm packages

Quick Answer

# Install a scoped package
npm install @scope/package-name

# Examples
npm install @types/node
npm install @vitejs/plugin-react
npm install @company/internal-lib

Usage

Scoped packages group related packages under an organization or user namespace.

Other causes & fixes

Publishing a scoped package

# Publish publicly (scoped packages are private by default!)
npm publish --access public

# Publish privately (requires paid npm account or private registry)
npm publish

Configure a scope to use a private registry

# .npmrc — map @myorg scope to a private registry
@myorg:registry=https://npm.mycompany.com/

# Then install as normal
npm install @myorg/internal-lib

Import in code

// Both CommonJS and ESM work the same
import { helper } from '@scope/package-name';
const { helper } = require('@scope/package-name');