figma-code-connect

分类: 开发与编程 | 上传者: figma | 下载: 0 | 版本: v1.0（最新）
创建和维护 Figma Code Connect 模板文件，将 Figma 组件映射到代码片段。当用户提及 Code Connect、Figma 组件映射、设计到代码转换或要求创建/更新 .figma.js 文件时使用。
更新日志: Source: GitHub https://github.com/figma/mcp-server-guide
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当前层级: tree/main/skills/figma-code-connect/
📁 references/
- 📄 advanced-patterns.md 9.8 KB
- 📄 api.md 22.3 KB
📄 SKILL.md 17.3 KB
SKILL.md

---
name: figma-code-connect
description: Creates and maintains Figma Code Connect template files that map Figma components to code snippets. Use when the user mentions Code Connect, Figma component mapping, design-to-code translation, or asks to create/update .figma.js files.
disable-model-invocation: false
---

## Overview

Create parserless Code Connect template files (`.figma.js`) that map Figma components to code snippets. Given a Figma URL, follow the steps below to create a template.

> **Note:** This project may also contain parser-based `.figma.tsx` files (using `figma.connect()`, published via CLI). This skill covers **parserless templates only** — `.figma.js` files that use the MCP tools to fetch component context from Figma.

## Prerequisites

- **Figma MCP server must be connected** — verify that Figma MCP tools (e.g., `get_code_connect_suggestions`) are available before proceeding. If not, guide the user to enable the Figma MCP server and restart their MCP client.
- **Components must be published** — Code Connect only works with components published to a Figma team library. If a component is not published, inform the user and stop.
- **Organization or Enterprise plan required** — Code Connect is not available on Free or Professional plans.
- **URL must include `node-id`** — the Figma URL must contain the `node-id` query parameter.

## Step 1: Parse the Figma URL

Extract `fileKey` and `nodeId` from the URL:

| URL Format | fileKey | nodeId |
|---|---|---|
| `figma.com/design/:fileKey/:name?node-id=X-Y` | `:fileKey` | `X-Y` → `X:Y` |
| `figma.com/file/:fileKey/:name?node-id=X-Y` | `:fileKey` | `X-Y` → `X:Y` |
| `figma.com/design/:fileKey/branch/:branchKey/:name` | use `:branchKey` | from `node-id` param |

Always convert `nodeId` hyphens to colons: `1234-5678` → `1234:5678`.

**Worked example:**

Given: `https://www.figma.com/design/QiEF6w564ggoW8ftcLvdcu/MyDesignSystem?node-id=4185-3778`
- `fileKey` = `QiEF6w564ggoW8ftcLvdcu`
- `nodeId` = `4185-3778` → `4185:3778`

## Step 2: Discover Unmapped Components

The user may provide a URL pointing to a frame, instance, or variant — not necessarily a component set or standalone component. Call the MCP tool `get_code_connect_suggestions` with:
- `fileKey` — from Step 1
- `nodeId` — from Step 1 (colons format)
- `excludeMappingPrompt` — `true` (returns a lightweight list of unmapped components)

This tool identifies published components in the selection that don't yet have Code Connect mappings.

**Handle the response:**

- **"No published components found in this selection"** — the node contains no published components. Inform the user they need to publish the component to a team library in Figma first, then stop.
- **"All component instances in this selection are already connected to code via Code Connect"** — everything is already mapped. Inform the user and stop.
- **Normal response with component list** — extract the `mainComponentNodeId` for each returned component. Use these resolved node IDs (not the original from the URL) for all subsequent steps. If multiple components are returned (e.g. the user selected a frame containing several different component instances), repeat Steps 3–6 for each one.

## Step 3: Fetch Component Properties

Call the MCP tool `get_context_for_code_connect` with:
- `fileKey` — from Step 1
- `nodeId` — the resolved `mainComponentNodeId` from Step 2
- `clientFrameworks` — determine from `figma.config.json` `parser` field (e.g. `"react"` → `["react"]`)
- `clientLanguages` — infer from project file extensions (e.g. TypeScript project → `["typescript"]`, JavaScript → `["javascript"]`)

For multiple components, call the tool once per node ID.

The response contains the Figma component's **property definitions** — note each property's name and type:
- **TEXT** — text content (labels, titles, placeholders)
- **BOOLEAN** — toggles (show/hide icon, disabled state)
- **VARIANT** — enum options (size, variant, state)
- **INSTANCE_SWAP** — swappable component slots (icon, avatar)

Save this property list — you will use it in Step 5 to write the template.

## Step 4: Identify the Code Component

If the user did not specify which code component to connect:

1. Check `figma.config.json` for `paths` and `importPaths` to find where components live
2. Search the codebase for a component matching the Figma component name. Check common directories (`src/components/`, `components/`, `lib/ui/`, `app/components/`) if `figma.config.json` doesn't specify paths
3. Read candidate files and compare their props interface against the Figma properties from Step 3 — look for matching variant types, size options, boolean flags, and slot props
4. If multiple candidates match, pick the one with the closest prop-interface match and explain your reasoning to the user
5. If no match is found, show the 2 closest candidates and ask the user to confirm or provide the correct path

**Confirm with the user** before proceeding to Step 5. Present the match: which code component you found, where it lives, and why it matches (prop correspondence, naming, purpose).

Read `figma.config.json` for import path aliases — the `importPaths` section maps glob patterns to import specifiers, and the `paths` section maps those specifiers to directories.

Read the code component's source to understand its props interface — this informs how to map Figma properties to code props in Step 5.

## Step 5: Create the Parserless Template (.figma.js)

### File location

Place the file alongside existing Code Connect templates (`.figma.tsx` or `.figma.js` files). Check `figma.config.json` `include` patterns for the correct directory. Name it `ComponentName.figma.js`.

### Template structure

Every parserless template follows this structure:

```js
// url=https://www.figma.com/file/{fileKey}/{fileName}?node-id={nodeId}
// source={path to code component from Step 4}
// component={code component name from Step 4}
const figma = require('figma')
const instance = figma.selectedInstance

// Extract properties from the Figma component (see property mapping below)
// ...

export default {
  example: figma.tsx`<Component ... />`,       // Required: code snippet
  imports: ['import { Component } from "..."'], // Optional: import statements
  id: 'component-name',                         // Required: unique identifier
  metadata: {                                    // Optional
    nestable: true,                              // true = inline in parent, false = show as pill
    props: {}                                    // data accessible to parent templates
  }
}
```

### Property mapping

Use the property list from Step 3 to extract values. For each Figma property type, use the corresponding method:

| Figma Property Type | Template Method | When to Use |
|---|---|---|
| TEXT | `instance.getString('Name')` | Labels, titles, placeholder text |
| BOOLEAN | `instance.getBoolean('Name', { true: ..., false: ... })` | Toggle visibility, conditional props |
| VARIANT | `instance.getEnum('Name', { 'FigmaVal': 'codeVal' })` | Size, variant, state enums |
| INSTANCE_SWAP | `instance.getInstanceSwap('Name')` | Icon slots, swappable children |
| (child layer) | `instance.findInstance('LayerName')` | Named child instances without a property |
| (text layer) | `instance.findText('LayerName')` → `.textContent` | Text content from named layers |

**TEXT** — get the string value directly:
```js
const label = instance.getString('Label')
```

**VARIANT** — map Figma enum values to code values:
```js
const variant = instance.getEnum('Variant', {
  'Primary': 'primary',
  'Secondary': 'secondary',
})

const size = instance.getEnum('Size', {
  'Small': 'sm',
  'Medium': 'md',
  'Large': 'lg',
})
```

**BOOLEAN** — simple boolean or mapped to values:
```js
// Simple boolean
const disabled = instance.getBoolean('Disabled')

// Mapped to code values
const hasIcon = instance.getBoolean('Has Icon', {
  true: figma.tsx`<Icon />`,
  false: undefined,
})
```

**INSTANCE_SWAP** — access swappable component instances:
```js
const icon = instance.getInstanceSwap('Icon')
let iconCode
if (icon && icon.hasCodeConnect()) {
  iconCode = icon.executeTemplate().example
}
```

### Interpolation in tagged templates

When interpolating values in tagged templates, use the correct wrapping:
- **String values** (`getString`, `getEnum`, `textContent`): wrap in quotes → `variant="${variant}"`
- **Instance/section values** (`executeTemplate().example`): wrap in braces → `icon={${iconCode}}`
- **Boolean bare props**: use conditional → `${disabled ? 'disabled' : ''}`

### Finding descendant layers

When you need to access children that aren't exposed as component properties:

| Method | Use when |
|---|---|
| `instance.getInstanceSwap('PropName')` | A component property exists for this slot |
| `instance.findInstance('LayerName')` | You know the child layer name (no component property) |
| `instance.findText('LayerName')` → `.textContent` | You need text content from a named text layer |
| `instance.findConnectedInstance('id')` | You know the child's Code Connect `id` |
| `instance.findConnectedInstances(fn)` | You need multiple connected children matching a filter |
| `instance.findLayers(fn)` | You need any layers (text + instances) matching a filter |

### Nested component example

For multi-level nested components or metadata prop passing between templates, see [advanced-patterns.md](references/advanced-patterns.md).

```js
const icon = instance.getInstanceSwap('Icon')
let iconSnippet
if (icon && icon.hasCodeConnect()) {
  iconSnippet = icon.executeTemplate().example
}

export default {
  example: figma.tsx`<Button ${iconSnippet ? figma.tsx`icon={${iconSnippet}}` : ''}>${label}</Button>`,
  // ...
}
```

### Conditional props

```js
const variant = instance.getEnum('Variant', { 'Primary': 'primary', 'Secondary': 'secondary' })
const disabled = instance.getBoolean('Disabled')

export default {
  example: figma.tsx`
    <Button
      variant="${variant}"
      ${disabled ? 'disabled' : ''}
    >
      ${label}
    </Button>
  `,
  // ...
}
```

### Tagged template literals

Use the tagged template matching your target language:

| Template | Language |
|---|---|
| `figma.tsx` | React / JSX / TypeScript |
| `figma.html` | HTML / Web Components |
| `figma.swift` | Swift |
| `figma.kotlin` | Kotlin |
| `figma.code` | Generic / fallback |

## Step 6: Validate

Read back the `.figma.js` file and review it against the following:

- **Property coverage** — every Figma property from Step 3 should be accounted for in the template. Flag any that are missing and ask the user if they were intentionally omitted.
- **Rules and Pitfalls** — check for the common mistakes listed below (string concatenation of template results, missing `hasCodeConnect()` guards, missing `type === 'INSTANCE'` checks, etc.)
- **Interpolation wrapping** — strings (`getString`, `getEnum`, `textContent`) wrapped in quotes, instance/section values (`executeTemplate().example`) wrapped in braces, booleans using conditionals
- **Tagged template** — confirm it matches the project's framework (e.g. `figma.tsx` for React, not `figma.code`)

If anything looks uncertain, consult [api.md](references/api.md) for API details and [advanced-patterns.md](references/advanced-patterns.md) for complex nesting.

## Inline Quick Reference

### `instance.*` Methods

| Method | Signature | Returns |
|---|---|---|
| `getString` | `(propName: string)` | `string` |
| `getBoolean` | `(propName: string, mapping?: { true: any, false: any })` | `boolean \| any` |
| `getEnum` | `(propName: string, mapping: { [figmaVal]: codeVal })` | `any` |
| `getInstanceSwap` | `(propName: string)` | `InstanceHandle \| null` |
| `getPropertyValue` | `(propName: string)` | `string \| boolean` |
| `findInstance` | `(layerName: string, opts?: SelectorOptions)` | `InstanceHandle \| ErrorHandle` |
| `findText` | `(layerName: string, opts?: SelectorOptions)` | `TextHandle \| ErrorHandle` |
| `findConnectedInstance` | `(codeConnectId: string, opts?: SelectorOptions)` | `InstanceHandle \| ErrorHandle` |
| `findConnectedInstances` | `(selector: (node) => boolean, opts?: SelectorOptions)` | `InstanceHandle[]` |
| `findLayers` | `(selector: (node) => boolean, opts?: SelectorOptions)` | `(InstanceHandle \| TextHandle)[]` |

### InstanceHandle Methods

| Method | Returns |
|---|---|
| `hasCodeConnect()` | `boolean` |
| `executeTemplate()` | `{ example: ResultSection[], metadata: Metadata }` |
| `codeConnectId()` | `string \| null` |

### TextHandle Properties

| Property | Type |
|---|---|
| `.textContent` | `string` |
| `.name` | `string` |

### SelectorOptions

```ts
{ path?: string[], traverseInstances?: boolean }
```

### Export Structure

```js
export default {
  example: figma.tsx`...`,                      // Required: ResultSection[]
  id: 'component-name',                         // Required: string
  imports: ['import { X } from "..."'],          // Optional: string[]
  metadata: { nestable: true, props: {} }        // Optional
}
```

### Tagged Template Types

| Tag | Language |
|---|---|
| `figma.tsx` | React / JSX / TypeScript |
| `figma.jsx` | React JavaScript |
| `figma.html` | HTML / Web Components |
| `figma.swift` | Swift |
| `figma.kotlin` | Kotlin |
| `figma.code` | Generic / fallback |

## Rules and Pitfalls

1. **Never string-concatenate template results.** `executeTemplate().example` is a `ResultSection[]` object, not a string. Using `+` or `.join()` produces `[object Object]`. Always interpolate inside tagged templates: `` figma.tsx`${snippet1}${snippet2}` ``

2. **Always check `hasCodeConnect()` before `executeTemplate()`.** Calling `executeTemplate()` on an instance without Code Connect returns an error section.

3. **Check `type === 'INSTANCE'` before calling `hasCodeConnect()`.** `findInstance()`, `findConnectedInstance()`, and `findText()` return an `ErrorHandle` (truthy, but lacking `hasCodeConnect()`) on failure — not `null`. Add a type check to avoid crashes: `if (child && child.type === 'INSTANCE' && child.hasCodeConnect()) { ... }`

4. **Prefer `getInstanceSwap()` over `findInstance()`** when a component property exists for the slot. `findInstance('Star Icon')` breaks when the icon is swapped to a different name; `getInstanceSwap('Icon')` always works regardless of which instance is in the slot.

5. **Property names are case-sensitive** and must exactly match what `get_context_for_code_connect` returns.

6. **Use the correct tagged template** for the target language (`figma.tsx` for React, `figma.html` for HTML, etc.). Avoid `figma.code` when a specific one is available.

7. **Handle multiple template arrays correctly.** When iterating over children, set each result in a separate variable and interpolate them individually — do not use `.map().join()`:
   ```js
   // Wrong:
   items.map(n => n.executeTemplate().example).join('\n')

   // Correct — use separate variables:
   const child1 = items[0]?.executeTemplate().example
   const child2 = items[1]?.executeTemplate().example
   export default { example: figma.tsx`${child1}${child2}` }
   ```

## Complete Worked Example

Given URL: `https://figma.com/design/abc123/MyFile?node-id=42-100`

**Step 1:** Parse the URL.
- `fileKey` = `abc123`
- `nodeId` = `42-100` → `42:100`

**Step 2:** Call `get_code_connect_suggestions` with `fileKey: "abc123"`, `nodeId: "42:100"`, `excludeMappingPrompt: true`.
Response returns one component with `mainComponentNodeId: "42:100"`. If the response were empty, stop and inform the user. If multiple components were returned, repeat Steps 3–6 for each.

**Step 3:** Call `get_context_for_code_connect` with `fileKey: "abc123"`, `nodeId: "42:100"` (from Step 2), `clientFrameworks: ["react"]`, `clientLanguages: ["typescript"]`.

Response includes properties:
- Label (TEXT)
- Variant (VARIANT): Primary, Secondary
- Size (VARIANT): Small, Medium, Large
- Disabled (BOOLEAN)
- Has Icon (BOOLEAN)
- Icon (INSTANCE_SWAP)

**Step 4:** Search codebase → find `Button` component. Read its source to confirm props: `variant`, `size`, `disabled`, `icon`, `children`. Import path: `"primitives"`.

**Step 5:** Create `src/figma/primitives/Button.figma.js`:

```js
// url=https://figma.com/design/abc123/MyFile?node-id=42-100
// source=src/components/Button.tsx
// component=Button
const figma = require('figma')
const instance = figma.selectedInstance

const label = instance.getString('Label')
const variant = instance.getEnum('Variant', {
  'Primary': 'primary',
  'Secondary': 'secondary',
})
const size = instance.getEnum('Size', {
  'Small': 'sm',
  'Medium': 'md',
  'Large': 'lg',
})
const disabled = instance.getBoolean('Disabled')
const hasIcon = instance.getBoolean('Has Icon')
const icon = hasIcon ? instance.getInstanceSwap('Icon') : null
let iconCode
if (icon && icon.hasCodeConnect()) {
  iconCode = icon.executeTemplate().example
}

export default {
  example: figma.tsx`
    <Button
      variant="${variant}"
      size="${size}"
      ${disabled ? 'disabled' : ''}
      ${iconCode ? figma.tsx`icon={${iconCode}}` : ''}
    >
      ${label}
    </Button>
  `,
  imports: ['import { Button } from "primitives"'],
  id: 'button',
  metadata: { nestable: true }
}
```

**Step 6:** Read back file to verify syntax.

## Additional Reference

For advanced patterns (multi-level nested components, `findConnectedInstances` filtering, metadata prop passing between parent/child templates):

- [api.md](references/api.md) — Full Code Connect API reference
- [advanced-patterns.md](references/advanced-patterns.md) — Advanced nesting, metadata props, and descendant patterns
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