angular-tooling
Angular CLI usage, code generation, build configuration, and bundle optimization. Use when creating Angular projects, generating components/services/guards, configuring builds, running tests, or analyzing bundles.
What this skill does
# Angular Tooling ## **Priority: P2 (OPTIONAL)** ## CLI Essentials - **Command**: `ng generate component` (or `ng g c`) - **Flags**: `--dry-run` previews before write. `--change-detection=OnPush` sets CD at generation. `--skip-tests` skips spec. - **Workflow**: Always `ng generate` — **never create files manually**. ```bash ng new my-app --style=scss --routing # Create project ng g c features/user-profile # Generate component ng g s services/auth # Generate service (providedIn: root) ng g guard guards/auth # Generate functional guard ng g interceptor interceptors/auth # Generate functional interceptor ng g pipe pipes/truncate # Generate standalone pipe ``` ## Code Generation Flags - `--dry-run` — Preview output without writing files. Always use `--dry-run` first for unfamiliar generators. - `--skip-tests` — Skips spec file generation. - `--flat` — Skips subfolder creation. - `--change-detection=OnPush` — Sets CD strategy on generation. - `--style=scss` — Sets stylesheet format. ## Build Configuration - **Dev**: `ng serve --open` - **Prod**: `ng build -c production`. Output goes to `dist/my-app/browser/`. - **SSR**: `ng add @angular/ssr` then `ng build` (adds `server/` output). - **Coverage**: `ng test --code-coverage --watch=false`. Coverage output goes to `coverage/` directory. ## Bundle Analysis ```bash ng build -c production --stats-json npx esbuild-visualizer --metadata dist/my-app/browser/stats.json --open ``` - **Note**: Analyze bundle before editing `angular.json` budgets — don't lower without understanding what's large. ## Update Angular - **Check**: `ng update` — lists available updates. - **Apply**: `ng update @angular/core @angular/cli` — runs official **codemods**. - **Rule**: **Never use --force**; fix peer dependency conflicts instead. ## Anti-Patterns - **No manual file creation**: Use `ng generate` for consistency and proper registration. - **No `ng update --force`**: Fix peer dependency conflicts instead of skipping. - **No hand-editing angular.json budgets**: Analyze bundles first — lower budgets break CI. ## References - [CLI Commands & Build Examples](references/REFERENCE.md) - [Angular CLI Docs](https://angular.dev/tools/cli)
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