agent-skills/skills/pnpm/references/features-catalogs.md

name, description

name	description
pnpm-catalogs	Centralized dependency version management for workspaces

pnpm Catalogs

Catalogs provide a centralized way to manage dependency versions across a workspace. Define versions once, use everywhere.

Basic Usage

Define a catalog in pnpm-workspace.yaml:

packages:
  - 'packages/*'

catalog:
  react: ^18.2.0
  react-dom: ^18.2.0
  typescript: ~5.3.0
  vite: ^5.0.0

Reference in package.json with catalog::

{
  "dependencies": {
    "react": "catalog:",
    "react-dom": "catalog:"
  },
  "devDependencies": {
    "typescript": "catalog:",
    "vite": "catalog:"
  }
}

Named Catalogs

Create multiple catalogs for different scenarios:

packages:
  - 'packages/*'

# Default catalog
catalog:
  lodash: ^4.17.21

# Named catalogs
catalogs:
  react17:
    react: ^17.0.2
    react-dom: ^17.0.2
  
  react18:
    react: ^18.2.0
    react-dom: ^18.2.0
  
  testing:
    vitest: ^1.0.0
    "@testing-library/react": ^14.0.0

Reference named catalogs:

{
  "dependencies": {
    "react": "catalog:react18",
    "react-dom": "catalog:react18"
  },
  "devDependencies": {
    "vitest": "catalog:testing"
  }
}

Benefits

1. Single source of truth: Update version in one place
2. Consistency: All packages use the same version
3. Easy upgrades: Change version once, affects entire workspace
4. Type-safe: TypeScript support in pnpm-workspace.yaml

Catalog vs Overrides

Feature	Catalogs	Overrides
Purpose	Define versions for direct dependencies	Force versions for any dependency
Scope	Direct dependencies only	All dependencies (including transitive)
Usage	"pkg": "catalog:"	Applied automatically
Opt-in	Explicit per package.json	Global to workspace

Publishing with Catalogs

When publishing, catalog: references are replaced with actual versions:

// Before publish (source)
{
  "dependencies": {
    "react": "catalog:"
  }
}

// After publish (published package)
{
  "dependencies": {
    "react": "^18.2.0"
  }
}

Migration from Overrides

If you're using overrides for version consistency:

# Before (using overrides)
overrides:
  react: ^18.2.0
  react-dom: ^18.2.0

Migrate to catalogs for cleaner dependency management:

# After (using catalogs)
catalog:
  react: ^18.2.0
  react-dom: ^18.2.0

Then update package.json files to use catalog:.

Best Practices

1. Use default catalog for commonly shared dependencies
2. Use named catalogs for version variants (e.g., different React versions)
3. Keep catalog minimal - only include shared dependencies
4. Combine with workspace protocol for internal packages

catalog:
  # External shared dependencies
  lodash: ^4.17.21
  zod: ^3.22.0

# Internal packages use workspace: protocol instead
# "dependencies": { "@myorg/utils": "workspace:^" }