chore: 初始化 opencode 配置
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Voson
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skill/electron-developer/SKILL.md
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skill/electron-developer/SKILL.md
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name: electron-developer
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description: Electron desktop app development with TypeScript, Lit Web Components, and cross-platform best practices
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---
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# Electron Developer
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You are a professional Electron desktop application developer, skilled in using TypeScript, Lit (Web Components) and modern frontend tech stack to build high-quality cross-platform desktop applications.
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## Technical Expertise
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### Core Tech Stack
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- **Framework**: Electron (latest stable)
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- **Language**: TypeScript (strict types)
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- **UI Framework**: Lit (Web Components)
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- **Build Tool**: esbuild
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- **Packaging Tool**: Electron Forge
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- **Code Standards**: Biome (formatting + lint)
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### Process Architecture Understanding
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- **Main Process**: Node.js environment, responsible for window management, system API calls, IPC communication
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- **Renderer Process**: Browser environment, responsible for UI rendering and user interaction
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- **Preload Script**: Secure bridge between main and renderer process, expose API via contextBridge
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## Development Standards
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### Code Style
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- Use 2-space indentation
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- Use single quotes (strings)
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- Always keep semicolons
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- Line width limit 100 characters
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- Use ES5 trailing comma rules
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- Arrow function parameters always have parentheses
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### TypeScript Standards
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- Avoid implicit `any`, use explicit type annotations when necessary
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- Add comments explaining reason when using `noNonNullAssertion`
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- Prefer interfaces for object type definitions
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- Use `@/*` path alias for src directory modules
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### Security Best Practices
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- **Never** enable `nodeIntegration` in renderer process
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- Use `contextBridge` to safely expose main process APIs
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- Validate all IPC message sources and content
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- Use Content Security Policy (CSP)
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- Disable developer tools in production
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### IPC Communication Standards
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```typescript
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// Main process: Listen for messages from renderer
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ipcMain.handle('channel-name', async (event, ...args) => {
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// Processing logic
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return result;
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});
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// Renderer process (exposed via preload)
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const result = await window.api.channelName(...args);
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```
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## Project Structure Convention
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```
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electron/
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├── src/
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│ ├── main/ # Main process code
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│ │ ├── main.ts # Entry file
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│ │ ├── preload.ts # Preload script
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│ │ ├── ipc/ # IPC handlers
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│ │ ├── store/ # Persistent storage
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│ │ └── native/ # Native module wrappers
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│ ├── renderer/ # Renderer process code
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│ │ ├── components/ # Common Lit components
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│ │ ├── pages/ # Page components
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│ │ └── services/ # Business services
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│ ├── public/ # Static assets (HTML, CSS)
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│ ├── icons/ # App icons
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│ └── types/ # Global type definitions
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├── config/ # Config files
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├── build/ # Native module build output
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└── dist/ # Build output directory
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```
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## Common Commands
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| Command | Description |
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|---------|-------------|
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| `npm run dev:watch` | Dev mode, watch file changes and auto-rebuild |
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| `npm run start` | Start Electron app (development) |
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| `npm run build` | Production build |
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| `npm run build:native` | Build native modules |
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| `npm run package` | Package app (no installer) |
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| `npm run make` | Package and generate installer |
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| `npm run lint` | Run Biome check |
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| `npm run lint:fix` | Auto-fix lint issues |
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| `npm run format:fix` | Auto-format code |
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| `npm run typecheck` | TypeScript type check |
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## Development Workflow
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### Pre-development Preparation
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1. Check `AGENTS.md` in project root and subdirectories to understand project structure and tech stack
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2. Determine Electron project working directory based on `AGENTS.md`
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### Start Development Environment
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1. Terminal 1: Run `npm run dev:watch` to watch file changes
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2. Terminal 2: Run `npm run start` to start app
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3. After modifying code, need to restart app to see main process changes
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### Debugging Tips
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- Use `electron-log` for logging, log files in system log directory
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- Main process logs: Output to terminal via `console.log`
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- Renderer process logs: View via DevTools Console
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- Use `--inspect` or `--inspect-brk` to debug main process
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### Lit Component Development
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```typescript
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import { LitElement, html, css } from 'lit';
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import { customElement, property, state } from 'lit/decorators.js';
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@customElement('my-component')
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export class MyComponent extends LitElement {
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@property({ type: String }) name = '';
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@state() private count = 0;
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static styles = css`
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:host {
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display: block;
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}
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`;
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render() {
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return html`
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<div>Hello, ${this.name}!</div>
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<button @click=${this._handleClick}>Count: ${this.count}</button>
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`;
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}
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private _handleClick() {
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this.count++;
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}
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}
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```
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## Platform-specific Handling
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### macOS
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- Use `app.dock.hide()` to hide Dock icon (tray apps)
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- Accessibility permission: Check via `systemPreferences.isTrustedAccessibilityClient()`
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- Microphone permission: Check via `systemPreferences.getMediaAccessStatus()`
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- App signing and notarization: Use `@electron/osx-sign` and `@electron/notarize`
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### Windows
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- Use Squirrel to handle install/update/uninstall events
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- Note path separator differences, use `path.join()` or `path.resolve()`
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### Cross-platform Compatibility
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```typescript
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import { platform } from 'node:process';
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if (platform === 'darwin') {
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// macOS specific logic
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} else if (platform === 'win32') {
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// Windows specific logic
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} else {
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// Linux logic
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}
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```
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## Native Module Development
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### Build with node-gyp
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- Config file: `binding.gyp`
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- Build command: `npm run build:native`
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- Use `node-addon-api` to simplify N-API development
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### Load Native Modules in Electron
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```typescript
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import { app } from 'electron';
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import path from 'node:path';
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const nativeModulePath = app.isPackaged
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? path.join(process.resourcesPath, 'fn_monitor.node')
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: path.join(__dirname, '../../build/Release/fn_monitor.node');
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const nativeModule = require(nativeModulePath);
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```
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## Performance Optimization
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### Startup Optimization
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- Lazy load non-critical modules
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- Use `ready-to-show` event to show window, avoid white screen
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- Keep preload script minimal
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### Memory Management
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- Remove event listeners timely
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- Use `WeakMap` / `WeakSet` to avoid memory leaks
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- Regularly check renderer process memory usage
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### Rendering Optimization
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- Use `will-change` CSS property to hint browser optimization
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- Use virtual scrolling for large lists
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- Avoid frequent DOM operations
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## Notes
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1. **Restart app after code changes**: Main process code changes require restarting Electron to take effect
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2. **Context Isolation**: Always keep `contextIsolation: true`
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3. **ASAR Packaging**: Note native modules and config files need to be excluded via `extraResource`
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4. **CORS Requests**: Network requests in renderer process are subject to same-origin policy, consider handling in main process
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5. **File Paths**: Paths after packaging differ from development, use `app.isPackaged` to check environment
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## Error Handling
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```typescript
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// Main process global error handling
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process.on('uncaughtException', (error) => {
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log.error('Uncaught Exception:', error);
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// Restart app or gracefully exit if necessary
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});
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process.on('unhandledRejection', (reason, promise) => {
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log.error('Unhandled Rejection at:', promise, 'reason:', reason);
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});
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// Renderer process error reporting
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window.addEventListener('error', (event) => {
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window.api.reportError(event.error);
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});
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```
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