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agents/plugins/developer-essentials/skills/nx-workspace-patterns/SKILL.md
Seth Hobson 47a5dbc3f9 fix(skills): remove phantom resource references and fix CoC links (#447)
Remove references to non-existent resource files (references/, assets/,
scripts/, examples/) from 115 skill SKILL.md files. These sections
pointed to directories and files that were never created, causing
confusion when users install skills.

Also fix broken Code of Conduct links in issue templates to use
absolute GitHub URLs instead of relative paths that 404.
2026-03-07 10:53:17 -05:00

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Markdown

---
name: nx-workspace-patterns
description: Configure and optimize Nx monorepo workspaces. Use when setting up Nx, configuring project boundaries, optimizing build caching, or implementing affected commands.
---
# Nx Workspace Patterns
Production patterns for Nx monorepo management.
## When to Use This Skill
- Setting up new Nx workspaces
- Configuring project boundaries
- Optimizing CI with affected commands
- Implementing remote caching
- Managing dependencies between projects
- Migrating to Nx
## Core Concepts
### 1. Nx Architecture
```
workspace/
├── apps/ # Deployable applications
│ ├── web/
│ └── api/
├── libs/ # Shared libraries
│ ├── shared/
│ │ ├── ui/
│ │ └── utils/
│ └── feature/
│ ├── auth/
│ └── dashboard/
├── tools/ # Custom executors/generators
├── nx.json # Nx configuration
└── workspace.json # Project configuration
```
### 2. Library Types
| Type | Purpose | Example |
| --------------- | -------------------------------- | ------------------- |
| **feature** | Smart components, business logic | `feature-auth` |
| **ui** | Presentational components | `ui-buttons` |
| **data-access** | API calls, state management | `data-access-users` |
| **util** | Pure functions, helpers | `util-formatting` |
| **shell** | App bootstrapping | `shell-web` |
## Templates
### Template 1: nx.json Configuration
```json
{
"$schema": "./node_modules/nx/schemas/nx-schema.json",
"npmScope": "myorg",
"affected": {
"defaultBase": "main"
},
"tasksRunnerOptions": {
"default": {
"runner": "nx/tasks-runners/default",
"options": {
"cacheableOperations": [
"build",
"lint",
"test",
"e2e",
"build-storybook"
],
"parallel": 3
}
}
},
"targetDefaults": {
"build": {
"dependsOn": ["^build"],
"inputs": ["production", "^production"],
"cache": true
},
"test": {
"inputs": ["default", "^production", "{workspaceRoot}/jest.preset.js"],
"cache": true
},
"lint": {
"inputs": ["default", "{workspaceRoot}/.eslintrc.json"],
"cache": true
},
"e2e": {
"inputs": ["default", "^production"],
"cache": true
}
},
"namedInputs": {
"default": ["{projectRoot}/**/*", "sharedGlobals"],
"production": [
"default",
"!{projectRoot}/**/?(*.)+(spec|test).[jt]s?(x)?(.snap)",
"!{projectRoot}/tsconfig.spec.json",
"!{projectRoot}/jest.config.[jt]s",
"!{projectRoot}/.eslintrc.json"
],
"sharedGlobals": [
"{workspaceRoot}/babel.config.json",
"{workspaceRoot}/tsconfig.base.json"
]
},
"generators": {
"@nx/react": {
"application": {
"style": "css",
"linter": "eslint",
"bundler": "webpack"
},
"library": {
"style": "css",
"linter": "eslint"
},
"component": {
"style": "css"
}
}
}
}
```
### Template 2: Project Configuration
```json
// apps/web/project.json
{
"name": "web",
"$schema": "../../node_modules/nx/schemas/project-schema.json",
"sourceRoot": "apps/web/src",
"projectType": "application",
"tags": ["type:app", "scope:web"],
"targets": {
"build": {
"executor": "@nx/webpack:webpack",
"outputs": ["{options.outputPath}"],
"defaultConfiguration": "production",
"options": {
"compiler": "babel",
"outputPath": "dist/apps/web",
"index": "apps/web/src/index.html",
"main": "apps/web/src/main.tsx",
"tsConfig": "apps/web/tsconfig.app.json",
"assets": ["apps/web/src/assets"],
"styles": ["apps/web/src/styles.css"]
},
"configurations": {
"development": {
"extractLicenses": false,
"optimization": false,
"sourceMap": true
},
"production": {
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractLicenses": true
}
}
},
"serve": {
"executor": "@nx/webpack:dev-server",
"defaultConfiguration": "development",
"options": {
"buildTarget": "web:build"
},
"configurations": {
"development": {
"buildTarget": "web:build:development"
},
"production": {
"buildTarget": "web:build:production"
}
}
},
"test": {
"executor": "@nx/jest:jest",
"outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
"options": {
"jestConfig": "apps/web/jest.config.ts",
"passWithNoTests": true
}
},
"lint": {
"executor": "@nx/eslint:lint",
"outputs": ["{options.outputFile}"],
"options": {
"lintFilePatterns": ["apps/web/**/*.{ts,tsx,js,jsx}"]
}
}
}
}
```
### Template 3: Module Boundary Rules
```json
// .eslintrc.json
{
"root": true,
"ignorePatterns": ["**/*"],
"plugins": ["@nx"],
"overrides": [
{
"files": ["*.ts", "*.tsx", "*.js", "*.jsx"],
"rules": {
"@nx/enforce-module-boundaries": [
"error",
{
"enforceBuildableLibDependency": true,
"allow": [],
"depConstraints": [
{
"sourceTag": "type:app",
"onlyDependOnLibsWithTags": [
"type:feature",
"type:ui",
"type:data-access",
"type:util"
]
},
{
"sourceTag": "type:feature",
"onlyDependOnLibsWithTags": [
"type:ui",
"type:data-access",
"type:util"
]
},
{
"sourceTag": "type:ui",
"onlyDependOnLibsWithTags": ["type:ui", "type:util"]
},
{
"sourceTag": "type:data-access",
"onlyDependOnLibsWithTags": ["type:data-access", "type:util"]
},
{
"sourceTag": "type:util",
"onlyDependOnLibsWithTags": ["type:util"]
},
{
"sourceTag": "scope:web",
"onlyDependOnLibsWithTags": ["scope:web", "scope:shared"]
},
{
"sourceTag": "scope:api",
"onlyDependOnLibsWithTags": ["scope:api", "scope:shared"]
},
{
"sourceTag": "scope:shared",
"onlyDependOnLibsWithTags": ["scope:shared"]
}
]
}
]
}
}
]
}
```
### Template 4: Custom Generator
```typescript
// tools/generators/feature-lib/index.ts
import {
Tree,
formatFiles,
generateFiles,
joinPathFragments,
names,
readProjectConfiguration,
} from "@nx/devkit";
import { libraryGenerator } from "@nx/react";
interface FeatureLibraryGeneratorSchema {
name: string;
scope: string;
directory?: string;
}
export default async function featureLibraryGenerator(
tree: Tree,
options: FeatureLibraryGeneratorSchema,
) {
const { name, scope, directory } = options;
const projectDirectory = directory
? `${directory}/${name}`
: `libs/${scope}/feature-${name}`;
// Generate base library
await libraryGenerator(tree, {
name: `feature-${name}`,
directory: projectDirectory,
tags: `type:feature,scope:${scope}`,
style: "css",
skipTsConfig: false,
skipFormat: true,
unitTestRunner: "jest",
linter: "eslint",
});
// Add custom files
const projectConfig = readProjectConfiguration(
tree,
`${scope}-feature-${name}`,
);
const projectNames = names(name);
generateFiles(
tree,
joinPathFragments(__dirname, "files"),
projectConfig.sourceRoot,
{
...projectNames,
scope,
tmpl: "",
},
);
await formatFiles(tree);
}
```
### Template 5: CI Configuration with Affected
```yaml
# .github/workflows/ci.yml
name: CI
on:
push:
branches: [main]
pull_request:
branches: [main]
env:
NX_CLOUD_ACCESS_TOKEN: ${{ secrets.NX_CLOUD_ACCESS_TOKEN }}
jobs:
main:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- uses: actions/setup-node@v4
with:
node-version: 20
cache: "npm"
- name: Install dependencies
run: npm ci
- name: Derive SHAs for affected commands
uses: nrwl/nx-set-shas@v4
- name: Run affected lint
run: npx nx affected -t lint --parallel=3
- name: Run affected test
run: npx nx affected -t test --parallel=3 --configuration=ci
- name: Run affected build
run: npx nx affected -t build --parallel=3
- name: Run affected e2e
run: npx nx affected -t e2e --parallel=1
```
### Template 6: Remote Caching Setup
```typescript
// nx.json with Nx Cloud
{
"tasksRunnerOptions": {
"default": {
"runner": "nx-cloud",
"options": {
"cacheableOperations": ["build", "lint", "test", "e2e"],
"accessToken": "your-nx-cloud-token",
"parallel": 3,
"cacheDirectory": ".nx/cache"
}
}
},
"nxCloudAccessToken": "your-nx-cloud-token"
}
// Self-hosted cache with S3
{
"tasksRunnerOptions": {
"default": {
"runner": "@nx-aws-cache/nx-aws-cache",
"options": {
"cacheableOperations": ["build", "lint", "test"],
"awsRegion": "us-east-1",
"awsBucket": "my-nx-cache-bucket",
"awsProfile": "default"
}
}
}
}
```
## Common Commands
```bash
# Generate new library
nx g @nx/react:lib feature-auth --directory=libs/web --tags=type:feature,scope:web
# Run affected tests
nx affected -t test --base=main
# View dependency graph
nx graph
# Run specific project
nx build web --configuration=production
# Reset cache
nx reset
# Run migrations
nx migrate latest
nx migrate --run-migrations
```
## Best Practices
### Do's
- **Use tags consistently** - Enforce with module boundaries
- **Enable caching early** - Significant CI savings
- **Keep libs focused** - Single responsibility
- **Use generators** - Ensure consistency
- **Document boundaries** - Help new developers
### Don'ts
- **Don't create circular deps** - Graph should be acyclic
- **Don't skip affected** - Test only what changed
- **Don't ignore boundaries** - Tech debt accumulates
- **Don't over-granularize** - Balance lib count