nx-workspace-architecture

Development

Guide structuring new features in Nx workspaces. Use when user asks about creating libraries, organizing code, or where to place new features.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/data/nx-workspace-architecture/SKILL.md

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Nx Workspace Architecture

Core Principles

Domain over Technical - organize by business domains (products, orders, checkout), not technical types (components, services)
Thin App Shell - apps are deployment containers; business logic lives in libs
Explicit Boundaries - use Nx projects to enforce separation, not just folders

Library Types

Prefix	Purpose	Can Import
`feat-*`	Smart components, pages, business logic	feat, ui, data-access, util
`ui-*`	Presentational/dumb components	ui, util
`data-access`	API calls, state management	data-access, util
`util`	Pure functions, helpers, types	util only

Folder Structure

packages/
├── {domain}/           # e.g. products, orders, checkout
│   ├── data-access/
│   ├── feat-{name}/
│   ├── ui-{name}/
│   └── util/
└── shared/             # cross-domain utilities

Tagging Strategy

Add to project.json:

scope:{domain} - vertical boundary (products, orders, shared)
type:{library-type} - horizontal layer (feature, ui, data-access, util)

Decision Flow

When user wants to add new functionality:

Identify domain - which business area does it belong to?
Determine library type:
- Has routing/pages? → feat-*
- Purely visual component? → ui-*
- API/state logic? → data-access
- Pure utilities? → util
Check existing libs - can it extend an existing library?
Create new lib only if needed for clear separation

When to Split Libraries

Split when you observe:

Frequent cross-library changes for single features
Circular dependencies emerging
Unclear ownership between teams
Single lib growing too large (>20 files is a smell)

Generator Commands

Use the nx-generators skill.