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new-component

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Create a React component following project conventions — imports, types, cn(), tRPC patterns

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/new-component-itsmattg-property-tracker/SKILL.md

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New Component Runbook

Conventions

See src/components/CLAUDE.md for full patterns. Key points:

Import Order

"use client";                                    // 1. Directive (only if needed)
import { useState } from "react";                // 2. React
import Link from "next/link";                    // 3. Next.js
import { Plus } from "lucide-react";             // 4. Third-party
import { Button } from "@/components/ui/button"; // 5. Internal UI
import { MyCard } from "@/components/my/MyCard";  // 6. Internal app
import { trpc } from "@/lib/trpc/client";        // 7. Internal lib
import { MyHelper } from "./MyHelper";            // 8. Relative

Type Patterns

  • UI components: inline types React.ComponentProps<"div">
  • App components: file-local interface (NOT exported)
  • Never export prop interfaces
  • Use z.infer<typeof schema> for form types

Styling

  • Use cn() for conditional classes: cn("base", conditional && "extra", className)
  • Tailwind v4 — CSS variables for colors: var(--color-primary)
  • No hardcoded hex colors

Icons

  • import { Plus } from "lucide-react" (named imports only)
  • <Plus className="w-4 h-4" /> (Tailwind classes, not size prop)

tRPC Data Fetching

const { data, isLoading } = trpc.<domain>.<method>.useQuery({ ... });
const utils = trpc.useUtils();
const mutation = trpc.<domain>.<method>.useMutation({
  onSuccess: () => utils.<domain>.list.invalidate(),
});

"use client" Directive

Only add when the component needs hooks or interactivity. Server components by default.

Checklist

  • Import order follows convention
  • Types are file-local (not exported)
  • cn() used for class merging
  • Icons use named imports + Tailwind sizing
  • "use client" only if hooks/interactivity needed
  • No anti-patterns from .claude/rules/anti-patterns.md