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pick-ui-library

Pick the right library for a given frontend task from a curated, opinionated list — numbers, OTP inputs, charts, command menus, virtualization, drag and drop, toasts, state, styling, and more. Only runs when explicitly invoked; it does not trigger on its own.

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Picking The Right Library

A lookup skill. When invoked with a task ("I need toasts", "what should I use for drag and drop?"), match the task to the curated list below and recommend the library. These are deliberate, taste-driven picks — don't substitute alternatives outside this list unless the user asks for one or the task genuinely isn't covered.

How to use this

  1. Identify the task, not the library the user named. "I need to show a dropdown" is a UI-primitives task (base-ui), even if they asked about something else.
  2. Check what's already installed. Look at package.json first. If the project already uses a listed library, use it. If it uses a competitor (e.g. react-window instead of Virtuoso), flag the recommendation but don't churn the dependency without being asked.
  3. Recommend one library, state what it's for in one sentence, and install/wire it up if that's part of the request. Don't present a menu of options when the list has a clear answer.
  4. If the task isn't covered by the list, say so explicitly and recommend from your own knowledge — but be clear you've left the curated list.

The list

UI components & primitives

TaskLibrary
Unstyled, accessible UI components (dialogs, popovers, menus, selects…)base-ui
Command menus (⌘K palettes)cmdk
Toasts / notificationsSonner
One-time password / verification code inputsinput-otp
Customizable GUIs / control panelsLeva — dialkit is an alternative

Motion & visuals

TaskLibrary
General-purpose animation (springs, layout animations, enter/exit)motion (Framer Motion)
Animating numbers (counters, prices, stats)NumberFlow
Animated text componentstorph
3D globesCobe
Dynamic OG images (HTML/CSS → SVG/PNG)Satori
Syntax highlightingshiki

Reach for motion when you need springs, layout animations, exit animations, or gesture-driven values. A simple hover or fade doesn't need it — plain CSS transitions are the right tool there.

Charts

TaskLibrary
Real-time / streaming chartsLiveline
General charts (static or interactive dashboards)recharts

The split: if data points arrive live and the chart scrolls with time, use Liveline. Everything else is recharts.

Interaction & performance

TaskLibrary
Drag and dropdnd kit
Virtualization (long lists, large tables)Virtuoso

State & styling

TaskLibrary
State managementzustand
Constructing className strings conditionallyclsx
Type-safe, variant-driven styling for Tailwindcva
Theme switching / dark mode (no flash on load)next-themes

The styling split: clsx for ad-hoc conditional classes; cva when a component has real variants (size, intent, state) that deserve a typed API. They compose — cva uses clsx-style inputs internally.

Common mismatches to catch

  • Toasts built by hand or with a modal library → Sonner exists for exactly this.
  • A <div>-based dropdown/dialog with manual focus handling → base-ui, which handles accessibility, focus trapping, and dismissal.
  • Animating a number by re-rendering text → NumberFlow handles digit transitions properly.
  • Rendering a 1,000+ row list directly → Virtuoso before reaching for pagination hacks.
  • A useState-per-component web of props for shared state → zustand.
  • Template-literal className ternaries three conditions deep → clsx (or cva if it's variant-shaped).

レビュー

まだレビューはありません。使ってみた感想をお寄せください。

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日本語の概要は準備中です。原文の説明を表示しています。

spree/spree1.6万2026年10月11日 更新

Reverse-lookup glossary that turns a vague description of a web animation or motion effect into its exact term ("the bouncy thing when a popover opens" → Pop in; "the iOS rubber-band scroll" → Rubber-banding). Use when the user asks "what's it called when…", or describes a motion effect without knowing its name and wants the right word to prompt an AI or designer with. For naming an effect, not designing or building one.

日本語の概要は準備中です。原文の説明を表示しています。

spree/spree1.6万2026年10月11日 更新

Apple's approach to interface design and fluid, physical motion, translated for the web. Use when building or reviewing gesture-driven UI, spring animations, drag/swipe/sheet interactions, momentum and interruptible transitions, translucent materials and depth, typography (optical sizing, tracking, leading), reduced-motion, or the design foundations (feedback, spatial consistency, restraint) behind Apple-style interfaces.

日本語の概要は準備中です。原文の説明を表示しています。

spree/spree1.6万2026年10月11日 更新

This skill encodes Emil Kowalski's philosophy on UI polish, component design, animation decisions, and the invisible details that make software feel great.

日本語の概要は準備中です。原文の説明を表示しています。

spree/spree1.6万2026年10月11日 更新

Search a codebase or UI for places that don't animate but should, and reject everything that shouldn't. Read-only; it proposes motion with exact values, it does not implement it. Use when the user asks "what could be animated here?" or wants to "make this feel more alive". For fixing existing animations, use improve-animations or review-animations instead.

日本語の概要は準備中です。原文の説明を表示しています。

spree/spree1.6万2026年10月11日 更新

Survey a codebase's animation and motion code as a senior motion advisor, then produce a prioritized audit and self-contained implementation plans for other agents (or cheaper models) to execute. Read-only on source code — it plans improvements, it does not apply them. Use when the user asks to "improve the animations", "audit the motion", "make this app feel better", or wants a roadmap of animation fixes rather than a review of a single diff.

日本語の概要は準備中です。原文の説明を表示しています。

spree/spree1.6万2026年10月11日 更新

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