NPM Registry Quick Reference

Configuration Templates

Hosted Repository

{
  "type": "Hosted"
}

Proxy Repository

{
  "type": "Proxy",
  "proxy": {
    "routes": [
      {
        "url": "https://registry.npmjs.org",
        "name": "NPM Registry",
        "priority": 1
      }
    ]
  }
}

Multi-Route Proxy Repository

{
  "type": "Proxy",
  "proxy": {
    "routes": [
      {
        "url": "https://registry.npmjs.org",
        "name": "NPM Official",
        "priority": 10
      },
      {
        "url": "https://registry.yarnpkg.com",
        "name": "Yarn Registry",
        "priority": 5
      }
    ]
  }
}

Essential Commands

Configure NPM Registry

# Set the registry for your project
npm config set registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Set the registry globally
npm config set registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/ --global

# Verify the registry configuration
npm config get registry

Add User/Configure Authentication

# Add user to the registry
npm adduser --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/
# Follow prompts to enter username, password, and email

# Or login with existing credentials
npm login --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/
# Enter username, password, and email when prompted

Configure in .npmrc

Add to project .npmrc or user ~/.npmrc:

registry=https://your-nitro-repo.example.com/repositories/storage/npm-repo/
//your-nitro-repo.example.com/repositories/storage/npm-repo/:_authToken=${NITRO_NPM_TOKEN}
//your-nitro-repo.example.com/repositories/storage/npm-repo/:always-auth=true

Publish Package

# Prepare and publish
npm publish --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Publish with scoped package
npm publish --access public

# Publish with specific tag
npm publish --tag beta

Install Package

# Install from the private registry
npm install my-package --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Install global package
npm install -g my-cli-tool --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Install with authentication token
npm install my-package

Package Information

# View package info
npm view my-package --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# View specific version
npm view my-package@1.0.0 --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# List all versions
npm view my-package versions --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

Search Packages

# Search packages
npm search my-search-term --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Search with JSON output
npm search my-search-term --json --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

Publishing Workflows

Standard Package Publishing

# Initialize package
npm init

# Set registry in package.json
npm pkg set publishConfig.registry=https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Login
npm login --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Publish
npm publish

Scoped Package Publishing

# Initialize scoped package
npm init --scope=@mycompany

# Package.json will include the scope
{
  "name": "@mycompany/my-package",
  "version": "1.0.0",
  "publishConfig": {
    "registry": "https://your-nitro-repo.example.com/repositories/storage/npm-repo/"
  }
}

# Publish scoped package
npm publish --access public

CI/CD Integration (GitHub Actions)

name: Publish NPM Package

on:
  push:
    tags: ['v*']

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
          registry-url: 'https://your-nitro-repo.example.com/repositories/storage/npm-repo/'

      - name: Install dependencies
        run: npm ci

      - name: Run tests
        run: npm test

      - name: Publish package
        run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NITRO_NPM_TOKEN }}

Package.json Configuration

{
  "name": "my-package",
  "version": "1.0.0",
  "description": "My awesome package",
  "main": "index.js",
  "scripts": {
    "test": "jest",
    "publish:nitro": "npm publish --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/"
  },
  "publishConfig": {
    "registry": "https://your-nitro-repo.example.com/repositories/storage/npm-repo/"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/username/my-package.git"
  },
  "keywords": ["awesome", "package"],
  "author": "Your Name",
  "license": "MIT",
  "dependencies": {
    "lodash": "^4.17.21"
  },
  "devDependencies": {
    "jest": "^29.0.0"
  }
}

Common Endpoints

Description	Endpoint	Example
Root Registry	GET /	Registry information
Package Info	GET /package/{name}	Package metadata and versions
Package Version	GET /package/{name}/{version}	Specific version info
Download Tarball	GET /package/{name}/{version}/{file}	Download package tarball
Publish Package	PUT /	Upload new package version
User Info	GET /-/whoami	Get current user info
User Auth	GET /-/user/org.couchdb.user:{username}	User authentication

Yarn Integration

Configure Yarn Registry

# Set registry
yarn config set registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Add authentication token
yarn config set 'https://your-nitro-repo.example.com/repositories/storage/npm-repo/:_authToken' "$NITRO_NPM_TOKEN"

# Verify configuration
yarn config list

Yarn .yarnrc.yml Configuration

npmRegistryServer: "https://your-nitro-repo.example.com/repositories/storage/npm-repo/"
npmAuthToken: "${NITRO_NPM_TOKEN}"

Install and Publish with Yarn

# Install dependencies
yarn install

# Publish package
yarn npm publish

# Publish scoped package
yarn npm publish --access public

Troubleshooting Commands

Test Registry Connectivity

# Check if registry is accessible
curl -I https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Get registry info
curl https://your-nitro-repo.example.com/repositories/storage/npm-repo/

Test Authentication

# Test with token authentication
curl -H "Authorization: Bearer $NITRO_NPM_TOKEN" \
     https://your-nitro-repo.example.com/repositories/storage/npm-repo/-/whoami

# Test package access
curl -H "Authorization: Bearer $NITRO_NPM_TOKEN" \
     https://your-nitro-repo.example.com/repositories/storage/npm-repo/package/my-package

Debug Publishing Issues

# Verbose publish output
npm publish --verbose

# Dry run publish (doesn't actually publish)
npm publish --dry-run

# Check package contents before publishing
npm pack --dry-run

Common NPM Issues

# Clear npm cache
npm cache clean --force

# Verify npm configuration
npm config list

# Check package integrity
npm audit

# Fix permission issues
npm cache verify

Configuration Options

Setting	Default	Description
Proxy Routes	None	Upstream registries for proxy mode
Cache TTL	Default	Package metadata caching duration
Priority	0	Route priority in proxy mode

Performance Tips

For Large Packages

• Use .npmignore to exclude unnecessary files
• Optimize package.json dependencies
• Use scoped packages for better organization

For Proxy Mode

• Configure multiple upstream registries for reliability
• Set appropriate cache TTL based on update frequency
• Monitor cache hit rates

For CI/CD

• Use authentication tokens instead of user credentials
• Cache node_modules between builds
• Use npm ci for faster, reproducible installs

Security Checklist

• [ ] Use HTTPS for all registry communications
• [ ] Enable authentication for package publishing
• [ ] Use scoped packages for private packages
• [ ] Implement access control for package publishing
• [ ] Regularly audit published packages
• [ ] Use tokens for CI/CD automation
• [ ] Monitor registry access logs
• [ ] Enable package scanning for security vulnerabilities

Version Management

Semantic Versioning

{
  "name": "my-package",
  "version": "1.2.3",
  "scripts": {
    "version:patch": "npm version patch",
    "version:minor": "npm version minor",
    "version:major": "npm version major",
    "publish:patch": "npm version patch && npm publish",
    "publish:minor": "npm version minor && npm publish",
    "publish:major": "npm version major && npm publish"
  }
}

Publishing Different Tags

# Publish to latest tag (default)
npm publish

# Publish to beta tag
npm publish --tag beta

# Publish to next tag
npm publish --tag next

# Install specific tag
npm install my-package@beta

Workspace Integration

Lerna/Nx Workspaces

// lerna.json
{
  "version": "independent",
  "npmClient": "npm",
  "registry": "https://your-nitro-repo.example.com/repositories/storage/npm-repo/",
  "command": {
    "publish": {
      "registry": "https://your-nitro-repo.example.com/repositories/storage/npm-repo/"
    }
  }
}

Monorepo Publishing

# Publish all packages in workspace
lerna publish --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

# Publish packages with version changes only
lerna publish from-package --registry https://your-nitro-repo.example.com/repositories/storage/npm-repo/

Storage Layout

@scope/
└── pkg/
    └── my-package/
        └── 1.0.0/
            ├── my-package-1.0.0.tgz
            └── my-package-1.0.0.json
my-package/
└── 1.0.0/
    ├── my-package-1.0.0.tgz
    └── my-package-1.0.0.json

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Quick reference for NPM registry configuration and usage. See NPM Route Reference for detailed API documentation.