elements

Generate a production availability report for NVIDIA Elements packages and documentation.

Guide for creating new Elements components with all required files, base classes, metadata patterns, and test boilerplate. Use this skill whenever the user wants to create, scaffold, or set up a new component from scratch, needs to understand the required 10-file structure, asks about base classes and mixins (LitElement vs ButtonFormControlMixin), define.ts vs index.ts patterns, static metadata, component registration, or sub-component parent relationships. Also trigger when the user mentions creating test boilerplate for all 5 test types.

Unified accessibility auditing workflow across static analysis, runtime testing, ARIA patterns, keyboard navigation, and color contrast. Use this skill whenever the user mentions accessibility, a11y, WCAG, ARIA roles, axe tests, screen readers, focus management, keyboard navigation, color contrast, or wants to audit, verify, or fix accessibility on any component. Also use when writing or debugging .test.axe.ts files, checking tabindex management, or reviewing focus trapping behavior.

Component API design patterns following Elements conventions for properties, attributes, CSS custom properties, slots, and events. Use this skill whenever the user is designing or deciding on a component API, choosing between properties vs attributes vs slots, naming CSS custom properties, designing events, avoiding impossible states, deciding whether to reflect to an attribute, using CSS Parts, implementing the DataElement interface, or applying the internal-host pattern. Also trigger when the user asks about shorthand vs granular CSS properties or event naming conventions.

Wireit orchestration, build optimization, caching strategies, and build troubleshooting for the Elements monorepo. Use this skill whenever the user asks about Wireit configuration, build tasks, build dependencies, cache invalidation, build performance, adding new build tasks to package.json, cross-package dependency patterns, sideEffects declarations, CI pipeline configuration, or diagnosing slow or failing builds. Also trigger when the user mentions wireit, vite build issues, pnpm run ci, or build output problems.

Comprehensive code review process for Elements monorepo changes. Provides structured feedback on type safety, testing, documentation, and adherence to project guidelines. Use this skill whenever the user asks you to review code, check staged changes, look at a diff, give feedback before committing, review a PR or merge request, or evaluate code quality. Trigger on phrases like "review my changes," "check my code," "give me feedback," "look at my staged files," "review this PR," or "before I commit."

Guidelines for writing documentation files including 11ty templates, Eleventy shortcodes, JSDoc annotations, and markdown content. Use this skill whenever the user works with documentation markdown files, Vale prose linting errors, Eleventy shortcodes (dodont, example), frontmatter, JSDoc annotations that must pass Vale, or the documentation site. Also trigger when the user mentions Vale errors, adding terms to the vocabulary, suppressing Vale rules, or writing and fixing prose in .md or .ts files.

Guidelines for writing example template files (*.examples.ts) including naming conventions, @summary JSDoc comments, and stateless HTML patterns. Use this skill whenever the user creates, modifies, or reviews *.examples.ts files, asks about example naming rules (PascalCase, 3-word max, no component prefix), needs to write or improve @summary JSDoc comments, encounters example-naming ESLint errors, or wants to add stateless or interactive examples to a component's example file.

Convert validated playground templates or HTML compositions into reusable pattern files (*.examples.ts) in the pattern library. Use this skill whenever the user wants to save, persist, store, or catalog a template, prototype, composition, or playground result as a reusable pattern. Trigger on phrases like "save as pattern," "create pattern," "add to pattern library," "persist this template," "convert to examples.ts," or when the user has validated HTML and wants it stored in projects/internals/patterns/src/.

Write and run automated tests for Elements components including unit, accessibility, visual, SSR, and lighthouse tests. Use this skill whenever the user wants to write, create, update, or debug test files (.test.ts, .test.axe.ts, .test.visual.ts, .test.ssr.ts, .test.lighthouse.ts). Also trigger when the user asks about createFixture, removeFixture, elementIsStable, emulateClick, untilEvent, runAxe, visual baselines, theme testing, or test structure patterns like describe block naming.

Diagnose and resolve common issues including test failures, build errors, performance regressions, and development environment problems. Use this skill whenever the user reports something broken, failing, timing out, hanging, or producing unexpected results. Trigger on test failures (elementIsStable timeouts, flaky tests, screenshot diffs), build errors (Cannot find module, wireit cache issues, stale output), CI/CD failures, Git LFS problems, port conflicts, lighthouse score regressions, SSR errors, or environment setup issues.

Best practices for TypeScript code including type safety, discriminated unions, type guards, and exhaustive checking. Use this skill whenever the user asks about TypeScript patterns, type safety, type assertions (as any, as unknown), non-null assertions, discriminated unions, exhaustive switch/never patterns, type guards, boolean trap parameters, race conditions in async code, memory leaks from closures, or sequential vs parallel async operations. Also trigger when reviewing TypeScript code for unsafe patterns or refactoring types.