# Pencil UI Design System Vant

> Initialize Vant. design system components in Pencil variables and component overview.

- Skill: `full-stack-skills/pencil-ui-design-system-vant` (Agent Skill, multi-file: 6 files)
- Install (CLI): `npx skillmds@latest add full-stack-skills/pencil-ui-design-system-vant`
- Raw SKILL.md: https://api.skillmd.com/api/skills/full-stack-skills/pencil-ui-design-system-vant/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Design & Media
- License: Complete terms in LICENSE.txt
- Author: full-stack-skills (https://skillmd.com/u/full-stack-skills)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/full-stack-skills/pencil-ui-design-system-vant

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# Vant Design System Initializer

**Constraint**: Only use this skill when the user explicitly mentions "Pencil" and "Vant" (or "Vant 4") or when orchestrating a Pencil design system initialization task.

## When to use this skill

Use this skill when you need to initialize a new design system based on Vant specifications, specifically to set up the global color palette and create the initial component library frames in a .pen file.

## How to use this skill

This skill outputs a PENCIL_PLAN. The Agent then calls Pencil MCP tools in order: `open_document`, `set_variables`, `batch_design`, optionally `get_screenshot`.

### Step 1: Initialize Variables (set_variables)

Use `mcp__pencil__set_variables` to register Vant design tokens. Follow .pen file schema.

**Primary / Semantic**
- `van-primary-color`: `#1989fa`
- `van-success-color`: `#07c160`
- `van-warning-color`: `#ff976a`
- `van-danger-color`: `#ee0a24`
- `van-gray-color`: `#323233`

**Text & Border**
- `van-text-color`: `#323233`
- `van-text-color-2`: `#646566`
- `van-text-color-3`: `#969799`
- `van-border-color`: `#ebedf0`
- `van-border-radius`: `4px`

**Font**
- `van-font-size-md`: `14px`

Fill from Vant theme docs if more tokens are needed.

### Step 2: Create Component Overview Structure (batch_design)

Use `mcp__pencil__batch_design` to create a "Components Overview" frame with sections based on Vant documentation:

1. **Basic (基础)**
   - Button, Cell, Icon, Image, Layout, Popup, Space, ConfigProvider
2. **Form (表单)**
   - Calendar, Cascader, Checkbox, DatetimePicker, Field, Form, NumberKeyboard, PasswordInput, Picker, Radio, Rate, Search, Slider, Stepper, Switch, Upload
3. **Feedback (反馈)**
   - ActionSheet, Dialog, DropdownMenu, Loading, Notify, Overlay, ShareSheet, SwipeCell, Toast
4. **Display (展示)**
   - Badge, Circle, Collapse, CountDown, Divider, Empty, ImagePreview, Laziness, List, NoticeBar, Progress, Skeleton, Steps, Sticky, Swipe, Tag
5. **Navigation (导航)**
   - ActionBar, Grid, IndexBar, NavBar, Pagination, Sidebar, Tab, Tabbar, TreeSelect

Organize frames using Auto Layout. Keep each `batch_design` call to maximum 25 operations.

## Best Practices

- Verify token values against Vant theme documentation.
- Use `set_variables` with `replace: false` unless a full reset is requested.
- Use Auto Layout for component overview frames.

## Keywords

pencil, vant, vant 4, design system, init, variables, components

## References

- `references/contract.md` – Design tokens and component naming.
- `references/official.md` – Link to official documentation.
- `references/examples.md` – Example PENCIL_PLAN.
- `references/components.md` – Component specifications.

## 能力边界

### ✅ 适用场景
- 当你需要使用此技能对应的技术栈时
- 当项目需要遵循最佳实践时
- 当需要快速上手或深入理解核心概念时

### ⚠️ 需要注意
- 复杂业务逻辑需要结合具体场景调整
- 性能优化需要根据实际数据量评估

### ❌ 不适用场景
- 不相关的技术栈或框架
- 需要完全自定义的特殊场景

## 常见陷阱 (Gotchas)

1. **版本兼容性**：注意框架版本与依赖库的兼容性，不同版本 API 可能有差异
2. **配置文件格式**：配置文件格式错误是最常见的问题，建议使用编辑器的语法检查
3. **环境变量**：确保所有必要的环境变量已正确设置，敏感信息不要硬编码
4. **依赖冲突**：多版本共存时注意依赖冲突，使用 lock 文件锁定版本
5. **性能陷阱**：大数据量场景下注意性能优化，避免 N+1 查询等常见问题