Plugin Development

/**
 * Plugin creation and management class extending Creator
 */
class Plugin extends Creator {
  conf: IPluginConf;
  
  /**
   * Initialize plugin creator with configuration
   * @param options - Plugin configuration options
   */
  constructor(options: IPluginConf);
  
  /**
   * Create plugin from template with scaffolding
   * @returns Promise that resolves when plugin creation completes
   */
  create(): Promise<void>;
  
  /**
   * Get CLI version for plugin metadata
   * @returns CLI version string
   */
  getCliVersion(): string;
}

/**
 * Plugin configuration interface
 */
interface IPluginConf {
  /** Name of the plugin */
  pluginName: string;
  /** Plugin type */
  type: string;
  /** Plugin description */
  description?: string;
  /** Directory where plugin will be created */
  projectDir: string;
  /** Project name (derived from directory) */
  projectName: string;
  /** Template to use for plugin creation */
  template: string;
  /** CLI version */
  version: string;
}

import { Plugin } from "@tarojs/cli";

// Create a platform plugin
const platformPlugin = new Plugin({
  pluginName: 'my-platform-plugin',
  type: 'platform',
  description: 'Custom platform support for Taro',
  projectDir: '/path/to/my-platform-plugin',
  projectName: 'my-platform-plugin',
  template: 'platform',
  version: '4.1.6'
});

await platformPlugin.create();

// Create a build plugin
const buildPlugin = new Plugin({
  pluginName: 'custom-build-plugin',
  type: 'build',
  description: 'Custom build process plugin',
  projectDir: '/path/to/build-plugin',
  projectName: 'custom-build-plugin',
  template: 'build',
  version: '4.1.6'
});

await buildPlugin.create();

/**
 * Supported plugin types
 */
type PluginType = 
  | 'platform'      // Platform-specific compilation support
  | 'build'         // Build process customization
  | 'framework'     // Framework integration
  | 'transform'     // Code transformation
  | 'analysis'      // Code analysis and linting
  | 'deploy'        // Deployment automation
  | 'dev-tools';    // Development tooling

/**
 * Plugin type configurations and capabilities
 */
interface PluginTypeConfig {
  platform: {
    purpose: 'Add support for new target platforms';
    hooks: ['onBuildStart', 'onBuildFinish', 'onGenerateProjectConfig'];
    examples: ['@tarojs/plugin-platform-weapp', '@tarojs/plugin-platform-h5'];
  };
  build: {
    purpose: 'Customize build pipeline and webpack configuration';
    hooks: ['onBuildStart', 'modifyWebpackChain', 'onBuildFinish'];
    examples: ['@tarojs/plugin-terser', '@tarojs/plugin-csso'];
  };
  framework: {
    purpose: 'Add support for new frontend frameworks';
    hooks: ['onParseCreateElement', 'onBuildStart'];
    examples: ['@tarojs/plugin-framework-react', '@tarojs/plugin-framework-vue3'];
  };
}

/**
 * Plugin template structure
 */
interface PluginTemplate {
  'src/': {
    'index.ts': 'Main plugin entry point';
    'types.ts': 'Plugin type definitions';
    'utils.ts': 'Plugin utility functions';
  };
  'package.json': 'Plugin package configuration';
  'README.md': 'Plugin documentation';
  'tsconfig.json': 'TypeScript configuration';
  '.gitignore': 'Git ignore rules';
}

/**
 * Available plugin templates
 */
interface PluginTemplates {
  platform: 'Template for platform plugins';
  build: 'Template for build process plugins';
  framework: 'Template for framework integration plugins';
  transform: 'Template for code transformation plugins';
  default: 'Basic plugin template';
}

/**
 * Standard Taro plugin interface
 */
interface TaroPlugin {
  /** Plugin name */
  name: string;
  /** Plugin version */
  version?: string;
  /** Plugin options */
  options?: Record<string, any>;
  
  /**
   * Plugin initialization function
   * @param api - Taro plugin API
   * @param options - Plugin configuration options
   */
  (api: PluginAPI, options?: Record<string, any>): void;
}

/**
 * Plugin API provided by Taro to plugins
 */
interface PluginAPI {
  /** Register hook listeners */
  onBuildStart(callback: () => void): void;
  onBuildFinish(callback: () => void): void;
  onGenerateProjectConfig(callback: (config: any) => any): void;
  
  /** Modify build configuration */
  modifyWebpackConfig(callback: (config: any) => any): void;
  modifyBuildAssets(callback: (assets: any) => any): void;
  
  /** Utility functions */
  getProjectName(): string;
  getProjectPath(): string;
  getCurrentPlatform(): string;
}

/**
 * Plugin development workflow steps
 */
interface PluginDevelopmentWorkflow {
  1: 'Define plugin purpose and type';
  2: 'Create plugin using Plugin class or template';
  3: 'Implement plugin interface and hooks';
  4: 'Test plugin with sample Taro project';
  5: 'Package and publish plugin to npm';
  6: 'Document plugin usage and configuration';
}

/**
 * Plugin testing utilities
 */
interface PluginTesting {
  /** Create test project for plugin validation */
  createTestProject(pluginPath: string): Promise<void>;
  /** Run build with plugin enabled */
  testBuild(platform: string): Promise<BuildResult>;
  /** Validate plugin output */
  validateOutput(expectedFiles: string[]): boolean;
}

/**
 * Available plugin hooks in Taro build lifecycle
 */
interface PluginHooks {
  /** Called before build process starts */
  onBuildStart: (callback: () => void) => void;
  
  /** Called after build process completes */
  onBuildFinish: (callback: (buildResult: BuildResult) => void) => void;
  
  /** Called when generating project configuration */
  onGenerateProjectConfig: (callback: (config: ProjectConfig) => ProjectConfig) => void;
  
  /** Called to modify webpack configuration */
  modifyWebpackConfig: (callback: (config: WebpackConfig) => WebpackConfig) => void;
  
  /** Called to modify build assets */
  modifyBuildAssets: (callback: (assets: BuildAssets) => BuildAssets) => void;
  
  /** Called to modify app entry */
  modifyAppEntry: (callback: (entry: string) => string) => void;
  
  /** Called during code transformation */
  onParseCreateElement: (callback: (nodePath: NodePath) => void) => void;
}

/**
 * Build result interface for hook callbacks
 */
interface BuildResult {
  success: boolean;
  platform: string;
  outputPath: string;
  duration: number;
  errors?: string[];
  warnings?: string[];
}

/**
 * Plugin configuration schema
 */
interface PluginConfigSchema {
  /** Plugin identifier */
  name: string;
  /** Plugin configuration options */
  options?: {
    [key: string]: {
      type: 'string' | 'boolean' | 'number' | 'object' | 'array';
      required?: boolean;
      default?: any;
      description: string;
    };
  };
}

/**
 * Example plugin configuration
 */
const examplePluginConfig: PluginConfigSchema = {
  name: 'my-custom-plugin',
  options: {
    enabled: {
      type: 'boolean',
      default: true,
      description: 'Enable or disable the plugin'
    },
    outputPath: {
      type: 'string',
      required: true,
      description: 'Output directory for plugin files'
    },
    transforms: {
      type: 'array',
      default: [],
      description: 'List of transformations to apply'
    }
  }
};

/**
 * Plugin publishing checklist
 */
interface PluginPublishingChecklist {
  packageJson: 'Complete package.json with correct metadata';
  readme: 'Comprehensive README with usage examples';
  types: 'TypeScript definition files for API';
  tests: 'Unit tests covering plugin functionality';
  examples: 'Example projects demonstrating plugin usage';
  license: 'Open source license file';
  changelog: 'Version history and changes';
}

/**
 * Recommended package.json structure for plugins
 */
interface PluginPackageJson {
  name: string;
  version: string;
  description: string;
  main: 'dist/index.js';
  types: 'dist/index.d.ts';
  keywords: ['taro', 'plugin', 'mini-program'];
  peerDependencies: {
    '@tarojs/cli': '^4.0.0';
  };
  files: ['dist', 'README.md'];
}