Paul BakausandClaude Opus 4.7
54d9f05ea5
Closes #114. Three orthogonal bugs that surfaced together when live mode picked an element inside a Vite React/TSX component with sibling branches: 1. JSX wrapper insertion produced invalid TSX - Replacing a single picked JSX child with [comment, <div>, comment] yields three adjacent siblings, which oxc rejects with "Adjacent JSX elements must be wrapped in an enclosing tag." - A Fragment `<></>` solves the adjacency case but breaks `cloneElement`-using parents (Radix `asChild`, Headless UI, etc.) with "Invalid prop supplied to React.Fragment." - Fix: keep the wrapper `<div data-impeccable-variants="ID">` as the single JSX-slot child and tuck both marker comments INSIDE it. accept/discard now expands its replacement range to include the wrapper's `<div>` open/close lines via div-depth tracking. 2. carbonize produced nested template literals in TSX `<style>` - extractCss captured `{` / `` `} `` lines from the agent's existing `<style>{`…`}</style>` template, then handleAccept re-wrapped with another pair, producing `<style>{`{`@scope…`}`}</style>` which oxc rejects with "Expected `}` but found `@`". - Fix: extractCss now strips a leading `{` and trailing `` `} `` wherever they appear in the captured content (own line OR attached to the first/last CSS line), so re-wrapping always yields exactly one `{` ` … ` `}` pair. 3. Ambiguous source matching for repeated JSX branches - `findElement` returned the first substring match. Multiple `<aside className="card">` siblings all matched the same query, so wrap silently landed on the first regardless of which one the user picked. - Fix: live-wrap accepts `--text TEXT` (the picked element's textContent), collects ALL candidates via `findAllElements`, and narrows by a tag-stripped, JSX-expression-stripped substring match. Returns `element_ambiguous + candidates[]` when multiple branches match equally; falls back to first-match when source uses dynamic content (`<h1>{title}</h1>`) so existing flows aren't broken. - The fake e2e agent now forwards `event.element.textContent` to wrap, and live.md tells the agent to do the same. Test coverage: - New `vite8-react-tsx-repeated-aside` e2e fixture: three identical `<aside>` branches, picks the second card's <h1>, runs the full wrap → Go → cycle → accept → carbonize cycle on a real Vite + TSX dev server, asserts that Hero One and Hero Three survive untouched (proving wrap landed on the correct branch). - Six new unit tests across live-wrap.test.mjs and live-accept.test.mjs covering the Fragment-replacement design, both leading/trailing template-literal placements, --text disambiguation, the dynamic- content fallback, and the element_ambiguous error shape. - New `runtime.assertSourceContains` fixture hook so other regression fixtures can assert sibling-branch survivability cheaply. All 186 unit + static-fixture tests pass; all 21 live e2e fixtures (20 prior + new TSX) pass with no console errors. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Impeccable
The vocabulary you didn't know you needed. 1 skill, 23 commands, and curated anti-patterns for impeccable frontend design.
Quick start: Visit impeccable.style to download ready-to-use bundles.
Why Impeccable?
Anthropic created frontend-design, a skill that guides Claude toward better UI design. Impeccable builds on that foundation with deeper expertise and more control.
Every LLM learned from the same generic templates. Without guidance, you get the same predictable mistakes: Inter font, purple gradients, cards nested in cards, gray text on colored backgrounds.
Impeccable fights that bias with:
- An expanded skill with 7 domain-specific reference files (view source)
- 23 commands to audit, review, polish, distill, animate, and more
- Curated anti-patterns that explicitly tell the AI what NOT to do
What's Included
The Skill: impeccable
A comprehensive design skill with 7 domain-specific references (view skill):
| Reference | Covers |
|---|---|
| typography | Type systems, font pairing, modular scales, OpenType |
| color-and-contrast | OKLCH, tinted neutrals, dark mode, accessibility |
| spatial-design | Spacing systems, grids, visual hierarchy |
| motion-design | Easing curves, staggering, reduced motion |
| interaction-design | Forms, focus states, loading patterns |
| responsive-design | Mobile-first, fluid design, container queries |
| ux-writing | Button labels, error messages, empty states |
23 Commands
All commands are accessed through /impeccable:
| Command | What it does |
|---|---|
/impeccable craft |
Full shape-then-build flow with visual iteration |
/impeccable teach |
One-time setup: gather design context, write PRODUCT.md and DESIGN.md |
/impeccable document |
Generate DESIGN.md from existing project code |
/impeccable extract |
Pull reusable components and tokens into the design system |
/impeccable shape |
Plan UX/UI before writing code |
/impeccable critique |
UX design review: hierarchy, clarity, emotional resonance |
/impeccable audit |
Run technical quality checks (a11y, performance, responsive) |
/impeccable polish |
Final pass, design system alignment, and shipping readiness |
/impeccable bolder |
Amplify boring designs |
/impeccable quieter |
Tone down overly bold designs |
/impeccable distill |
Strip to essence |
/impeccable harden |
Error handling, i18n, text overflow, edge cases |
/impeccable onboard |
First-run flows, empty states, activation paths |
/impeccable animate |
Add purposeful motion |
/impeccable colorize |
Introduce strategic color |
/impeccable typeset |
Fix font choices, hierarchy, sizing |
/impeccable layout |
Fix layout, spacing, visual rhythm |
/impeccable delight |
Add moments of joy |
/impeccable overdrive |
Add technically extraordinary effects |
/impeccable clarify |
Improve unclear UX copy |
/impeccable adapt |
Adapt for different devices |
/impeccable optimize |
Performance improvements |
/impeccable live |
Visual variant mode: iterate on elements in the browser |
Use /impeccable pin <command> to create standalone shortcuts (e.g., pin audit creates /audit).
Usage Examples
/impeccable audit blog # Audit blog hub + post pages
/impeccable critique landing # UX design review
/impeccable polish settings # Final pass before shipping
/impeccable harden checkout # Add error handling + edge cases
Or use /impeccable directly with a description:
/impeccable redo this hero section
Anti-Patterns
The skill includes explicit guidance on what to avoid:
- Don't use overused fonts (Arial, Inter, system defaults)
- Don't use gray text on colored backgrounds
- Don't use pure black/gray (always tint)
- Don't wrap everything in cards or nest cards inside cards
- Don't use bounce/elastic easing (feels dated)
See It In Action
Visit impeccable.style to see before/after case studies of real projects transformed with Impeccable commands.
Installation
Option 1: Download from Website (Recommended)
Visit impeccable.style, download the ZIP for your tool, and extract to your project.
Option 2: Copy from Repository
Cursor:
cp -r dist/cursor/.cursor your-project/
Note: Cursor skills require setup:
- Switch to Nightly channel in Cursor Settings → Beta
- Enable Agent Skills in Cursor Settings → Rules
Claude Code:
# Project-specific
cp -r dist/claude-code/.claude your-project/
# Or global (applies to all projects)
cp -r dist/claude-code/.claude/* ~/.claude/
OpenCode:
cp -r dist/opencode/.opencode your-project/
Pi:
cp -r dist/pi/.pi your-project/
Gemini CLI:
cp -r dist/gemini/.gemini your-project/
Note: Gemini CLI skills require setup:
- Install preview version:
npm i -g @google/gemini-cli@preview- Run
/settingsand enable "Skills"- Run
/skills listto verify installation
Codex CLI:
# Project-local
cp -r dist/agents/.agents your-project/
# Or user-wide
mkdir -p ~/.agents/skills
cp -r dist/agents/.agents/skills/* ~/.agents/skills/
GitHub Copilot:
cp -r dist/github/.github your-project/
Trae:
# Trae China (domestic version)
cp -r dist/trae/.trae-cn/skills/* ~/.trae-cn/skills/
# Trae International
cp -r dist/trae/.trae/skills/* ~/.trae/skills/
Note: Trae has two versions with different config directories:
- Trae China:
~/.trae-cn/skills/- Trae International:
~/.trae/skills/After copying, restart Trae IDE to activate the skills.
Rovo Dev:
# Project-specific
cp -r dist/rovo-dev/.rovodev your-project/
# Or global (applies to all projects)
cp -r dist/rovo-dev/.rovodev/skills/* ~/.rovodev/skills/
Usage
Once installed, use commands in your AI harness:
/audit # Find issues
/normalize # Fix inconsistencies
/polish # Final cleanup
/distill # Remove complexity
Most commands accept an optional argument to focus on a specific area:
/audit header
/polish checkout-form
Note: Codex uses skills here, not /prompts: commands. Open /skills or type $impeccable. Repo-local installs live in .agents/skills/; user-wide installs live in ~/.agents/skills/. GitHub Copilot uses .github/skills/. Restart the tool if a newly installed skill does not appear.
CLI
Impeccable includes a standalone CLI for detecting anti-patterns without an AI harness:
npx impeccable detect src/ # scan a directory
npx impeccable detect index.html # scan an HTML file
npx impeccable detect https://example.com # scan a URL (Puppeteer)
npx impeccable detect --fast --json . # regex-only, JSON output
The detector catches 24 issues across AI slop (side-tab borders, purple gradients, bounce easing, dark glows) and general design quality (line length, cramped padding, small touch targets, skipped headings, and more).
Supported Tools
Contributing
See DEVELOP.md for contributor guidelines and build instructions.
License
Apache 2.0. See LICENSE.
The impeccable skill builds on Anthropic's original frontend-design skill. See NOTICE.md for attribution.
Created by Paul Bakaus