electron-builder-config

Generate and validate electron-builder configuration for multi-platform desktop builds. This skill handles the complete configuration for building Electron applications across Windows, macOS, and Linux with proper code signing, auto-update channels, and platform-specific installers.

Capabilities

• Generate complete electron-builder.yml or electron-builder.json5 configuration
• Configure platform-specific build targets (NSIS, DMG, AppImage, DEB, RPM, Snap, Flatpak)
• Set up code signing for Windows (Authenticode) and macOS (Developer ID)
• Configure auto-update settings with electron-updater
• Optimize build artifacts with compression and deduplication
• Validate existing configurations for common issues
• Generate CI/CD build scripts for GitHub Actions, Azure DevOps, CircleCI

Input Schema

{
  "type": "object",
  "properties": {
    "projectPath": {
      "type": "string",
      "description": "Path to the Electron project root"
    },
    "appInfo": {
      "type": "object",
      "properties": {
        "appId": { "type": "string", "description": "Application bundle ID (com.company.app)" },
        "productName": { "type": "string" },
        "copyright": { "type": "string" }
      },
      "required": ["appId", "productName"]
    },
    "platforms": {
      "type": "array",
      "items": { "enum": ["windows", "macos", "linux"] },
      "description": "Target platforms to build for"
    },
    "targets": {
      "type": "object",
      "properties": {
        "windows": { "type": "array", "items": { "enum": ["nsis", "nsis-web", "portable", "appx", "msi", "squirrel"] } },
        "macos": { "type": "array", "items": { "enum": ["dmg", "pkg", "mas", "mas-dev", "zip"] } },
        "linux": { "type": "array", "items": { "enum": ["AppImage", "deb", "rpm", "snap", "flatpak", "tar.gz"] } }
      }
    },
    "codeSigning": {
      "type": "object",
      "properties": {
        "windows": {
          "type": "object",
          "properties": {
            "enabled": { "type": "boolean" },
            "certificateSubjectName": { "type": "string" },
            "timestampServer": { "type": "string" }
          }
        },
        "macos": {
          "type": "object",
          "properties": {
            "enabled": { "type": "boolean" },
            "identity": { "type": "string" },
            "hardenedRuntime": { "type": "boolean", "default": true },
            "notarize": { "type": "boolean" }
          }
        }
      }
    },
    "autoUpdate": {
      "type": "object",
      "properties": {
        "enabled": { "type": "boolean" },
        "provider": { "enum": ["github", "s3", "generic", "spaces", "keygen"] },
        "channel": { "enum": ["latest", "beta", "alpha"] }
      }
    },
    "generateCIScripts": {
      "type": "boolean",
      "description": "Generate CI/CD build scripts"
    }
  },
  "required": ["projectPath", "appInfo", "platforms"]
}

Output Schema

{
  "type": "object",
  "properties": {
    "success": { "type": "boolean" },
    "configPath": { "type": "string", "description": "Path to generated config file" },
    "config": { "type": "object", "description": "Generated electron-builder configuration" },
    "ciScripts": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "path": { "type": "string" },
          "description": { "type": "string" }
        }
      }
    },
    "warnings": { "type": "array", "items": { "type": "string" } },
    "recommendations": { "type": "array", "items": { "type": "string" } }
  },
  "required": ["success"]
}

Usage Instructions

1. Analyze project structure: Examine package.json, existing build configs, and project layout
2. Determine build requirements: Based on target platforms and distribution needs
3. Generate configuration: Create electron-builder.yml with all necessary settings
4. Validate configuration: Check for common issues and missing dependencies
5. Generate CI scripts: If requested, create GitHub Actions or other CI workflows

Configuration Templates

Basic Multi-Platform Build

appId: com.example.myapp
productName: MyApp
directories:
  buildResources: build
  output: dist
files:
  - "**/*"
  - "!**/*.{md,txt}"
  - "!**/node_modules/*/{CHANGELOG.md,README.md,readme.md}"
win:
  target:
    - target: nsis
      arch: [x64, ia32]
  icon: build/icon.ico
mac:
  target:
    - target: dmg
      arch: [x64, arm64]
  icon: build/icon.icns
  hardenedRuntime: true
  gatekeeperAssess: false
linux:
  target:
    - target: AppImage
      arch: [x64]
    - target: deb
      arch: [x64]
  icon: build/icons
  category: Utility

With Code Signing and Notarization

win:
  sign: ./scripts/sign.js
  signingHashAlgorithms: [sha256]
  signDlls: true
mac:
  identity: "Developer ID Application: Company Name (TEAMID)"
  hardenedRuntime: true
  entitlements: build/entitlements.mac.plist
  entitlementsInherit: build/entitlements.mac.plist
afterSign: scripts/notarize.js

With Auto-Update

publish:
  provider: github
  owner: your-org
  repo: your-repo
  releaseType: release
nsis:
  oneClick: false
  perMachine: true
  allowToChangeInstallationDirectory: true
  differentialPackage: true

Best Practices

1. Always use hardenedRuntime: true for macOS to pass notarization
2. Enable signingHashAlgorithms: [sha256] for modern Windows compatibility
3. Use differentialPackage: true for efficient auto-updates
4. Configure files patterns to exclude unnecessary files and reduce bundle size
5. Set up separate channels (latest, beta, alpha) for staged rollouts
6. Store signing credentials in CI secrets, never in config files

Community References

• electron-builder Documentation
• Electron Code Signing Guide
• electron-scaffold skill
• Electron Distribution & Auto-Update

Related Skills

• electron-main-preload-generator - Generate secure main process and preload scripts
• electron-auto-updater-setup - Configure electron-updater with advanced features
• windows-authenticode-signer - Windows code signing with signtool
• macos-codesign-workflow - macOS code signing and notarization

Related Agents

• electron-architect - Expert in Electron architecture and best practices
• desktop-ci-architect - CI/CD pipeline design for desktop builds