qiankun 未来发展趋势 #

// 未来可能的 Web Workers 隔离
class WebWorkerSandbox {
  constructor() {
    this.worker = new Worker('sandbox-worker.js');
    this.messageId = 0;
    this.pendingPromises = new Map();
  }

  async execute(code, context) {
    return new Promise((resolve, reject) => {
      const id = ++this.messageId;
      this.pendingPromises.set(id, { resolve, reject });
      
      this.worker.postMessage({
        id,
        code,
        context
      });
    });
  }

  init() {
    this.worker.onmessage = (event) => {
      const { id, result, error } = event.data;
      const promise = this.pendingPromises.get(id);
      
      if (promise) {
        if (error) {
          promise.reject(error);
        } else {
          promise.resolve(result);
        }
        this.pendingPromises.delete(id);
      }
    };
  }
}

// 使用示例
const sandbox = new WebWorkerSandbox();
const result = await sandbox.execute('window.location.href', {});

// 未来可能的 WASM 沙箱实现
class WASMSandbox {
  constructor(wasmModule) {
    this.wasmInstance = new WebAssembly.Instance(wasmModule, {
      env: {
        // 安全的导入函数
        print: (ptr, len) => this.handlePrint(ptr, len),
        getGlobal: (name) => this.handleGetGlobal(name)
      }
    });
  }

  async execute(code) {
    // 将 JavaScript 代码编译为 WebAssembly
    const compiledCode = await this.compileToWASM(code);
    return this.wasmInstance.exports.execute(compiledCode);
  }

  handlePrint(ptr, len) {
    // 安全的打印处理
    const memory = new Uint8Array(this.wasmInstance.exports.memory.buffer);
    const str = new TextDecoder().decode(memory.slice(ptr, ptr + len));
    console.log('[WASM Sandbox Output]:', str);
  }
}

// 预编译微应用资源
class PrecompiledAppLoader {
  constructor() {
    this.compiledCache = new Map();
    this.preloadQueue = [];
  }

  async loadPrecompiledApp(appConfig) {
    const cacheKey = this.generateCacheKey(appConfig);
    
    if (this.compiledCache.has(cacheKey)) {
      return this.compiledCache.get(cacheKey);
    }

    // 检查预编译资源是否存在
    const precompiledUrl = `${appConfig.entry}/compiled.js`;
    
    try {
      const response = await fetch(precompiledUrl);
      if (response.ok) {
        const compiledCode = await response.text();
        const compiledApp = this.compileApp(compiledCode, appConfig);
        
        this.compiledCache.set(cacheKey, compiledApp);
        return compiledApp;
      }
    } catch (error) {
      console.warn('Precompiled app not available, falling back to normal load:', error);
    }

    // 回退到正常加载
    return this.loadNormalApp(appConfig);
  }

  compileApp(code, config) {
    // 使用 WebAssembly 或其他编译技术
    return new Function(
      'window', 'document', 'location',
      `${code}; return { bootstrap, mount, unmount };`
    )(this.createSecureContext());
  }

  createSecureContext() {
    // 创建安全的执行上下文
    return {
      window: this.createSecureWindow(),
      document: this.createSecureDocument(),
      location: this.createSecureLocation()
    };
  }
}

// 基于 AI 的预加载预测
class AIPredictiveLoader {
  constructor() {
    this.model = new PredictionModel();
    this.userBehavior = new UserBehaviorTracker();
    this.appDependencies = new AppDependencyGraph();
  }

  async predictNextApp(currentPath, userInfo) {
    // 基于用户行为和应用依赖图预测
    const features = {
      currentPath,
      userRole: userInfo.role,
      timeOfDay: new Date().getHours(),
      dayOfWeek: new Date().getDay(),
      previousPaths: this.userBehavior.getRecentPaths(5),
      appUsagePattern: this.userBehavior.getAppUsagePattern()
    };

    const prediction = await this.model.predict(features);
    return prediction.nextApp;
  }

  async intelligentPrefetch() {
    const predictedApp = await this.predictNextApp(
      window.location.pathname,
      getCurrentUser()
    );

    if (predictedApp) {
      // 预加载预测的应用
      await this.preloadApp(predictedApp);
    }
  }
}

// 机器学习模型示例（概念性）
class PredictionModel {
  async predict(features) {
    // 使用 TensorFlow.js 或其他 ML 库
    const model = await this.loadModel();
    const input = this.preprocessFeatures(features);
    const prediction = await model.predict(input);
    
    return {
      nextApp: this.decodePrediction(prediction),
      confidence: this.calculateConfidence(prediction)
    };
  }

  async loadModel() {
    // 加载预训练模型
    return await tf.loadLayersModel('localstorage://qiankun-prediction-model');
  }
}

// 基于 Web Components 的微应用
class MicroAppElement extends HTMLElement {
  constructor() {
    super();
    this.attachShadow({ mode: 'open' });
    this.sandbox = new SecureSandbox();
  }

  async connectedCallback() {
    const appConfig = this.getAttributes();
    const appContent = await this.loadAppContent(appConfig);
    
    this.shadowRoot.innerHTML = appContent;
    await this.bootstrapApp(appConfig);
  }

  async loadAppContent(config) {
    const response = await fetch(config.entry);
    return await response.text();
  }

  async bootstrapApp(config) {
    // 在 Shadow DOM 中执行微应用
    await this.sandbox.execute(`
      ${await this.fetchAppScript(config.entry)}
      if (typeof bootstrap === 'function') {
        bootstrap(${JSON.stringify(config.props)});
      }
    `);
  }
}

customElements.define('micro-app', MicroAppElement);

// 使用方式
/*
<micro-app 
  name="user-center" 
  entry="https://user-center.com/app.js"
  props='{"user": {"id": 1}}'>
</micro-app>
*/

// 利用 Web Packaging API
class PackagedMicroAppLoader {
  async loadPackagedApp(packageUrl) {
    if ('webPackage' in navigator) {
      // 使用 Web Packaging API 加载打包的应用
      const packageResponse = await navigator.webPackage.fetch(packageUrl);
      return await this.extractAndLoad(packageResponse);
    } else {
      // 回退到传统加载方式
      return await this.loadTraditional(packageUrl);
    }
  }

  async extractAndLoad(packageResponse) {
    const packageData = await packageResponse.unpack();
    
    // 提取并验证资源
    const { mainResource, subResources } = packageData;
    
    // 验证完整性
    if (!await this.verifyIntegrity(mainResource, subResources)) {
      throw new Error('Package integrity verification failed');
    }

    // 安全执行
    return await this.executeSecurely(mainResource, subResources);
  }
}

// AI 辅助的微应用代码生成
class AIGeneratedMicroApp {
  constructor() {
    this.codeGenerator = new CodeGenerationModel();
    this.templateRegistry = new TemplateRegistry();
  }

  async generateMicroApp(specification) {
    // 基于规范生成微应用代码
    const generatedCode = await this.codeGenerator.generate(specification);
    
    // 应用最佳实践模板
    const optimizedCode = await this.applyBestPractices(generatedCode);
    
    return optimizedCode;
  }

  async applyBestPractices(code) {
    // 自动应用 qiankun 最佳实践
    return [
      this.addLifecycleHooks,
      this.addErrorBoundaries,
      this.addPerformanceMonitoring,
      this.addSecurityMeasures
    ].reduce(async (acc, fn) => fn(await acc), code);
  }

  addLifecycleHooks(code) {
    // 自动添加标准生命周期
    return code + `
      export async function bootstrap(props) {
        console.log('App bootstrap');
        // Generated bootstrap logic
      }

      export async function mount(props) {
        console.log('App mount');
        // Generated mount logic
      }

      export async function unmount(props) {
        console.log('App unmount');
        // Generated unmount logic
      }
    `;
  }
}

// 自动生成微应用测试
class TestGenerator {
  async generateTests(microAppCode) {
    const analysis = await this.analyzeCode(microAppCode);
    
    return {
      unitTests: await this.generateUnitTests(analysis),
      integrationTests: await this.generateIntegrationTests(analysis),
      e2eTests: await this.generateE2ETests(analysis)
    };
  }

  async generateUnitTests(analysis) {
    // 生成生命周期函数测试
    const lifecycleTests = analysis.lifecycleFunctions.map(fn => `
      test('${fn} should execute without errors', async () => {
        const props = { container: document.createElement('div') };
        await ${fn}(props);
        // Add assertions based on function behavior
      });
    `);

    return lifecycleTests.join('\n');
  }

  async generateIntegrationTests(analysis) {
    // 生成通信测试
    return `
      test('should communicate with main app', async () => {
        const { setGlobalState, onGlobalStateChange } = initGlobalState({});
        
        // Test communication logic
        setGlobalState({ test: 'data' });
        
        return new Promise(resolve => {
          onGlobalStateChange((state) => {
            expect(state.test).toBe('data');
            resolve();
          }, true);
        });
      });
    `;
  }
}

// 支持多人协作的开发环境
class CollaborativeDevelopment {
  constructor() {
    this.collaborators = new Set();
    this.sharedState = new SharedState();
    this.conflictResolver = new ConflictResolver();
  }

  async setupCollaboration(appId) {
    // 建立 WebSocket 连接
    this.ws = new WebSocket(`wss://collab.qiankun.dev/${appId}`);
    
    this.ws.onmessage = (event) => {
      const message = JSON.parse(event.data);
      this.handleCollaborationMessage(message);
    };
  }

  handleCollaborationMessage(message) {
    switch (message.type) {
      case 'code-change':
        this.applyRemoteChange(message.change);
        break;
      case 'cursor-position':
        this.updateRemoteCursor(message.user, message.position);
        break;
      case 'debug-step':
        this.syncDebugState(message.state);
        break;
    }
  }

  applyRemoteChange(change) {
    // 应用远程代码变更
    const conflict = this.conflictResolver.checkConflict(change);
    
    if (conflict) {
      this.resolveConflict(change, conflict);
    } else {
      this.applyChange(change);
    }
  }
}

// 零信任安全模型
class ZeroTrustSecurity {
  constructor() {
    this.policyEngine = new PolicyEngine();
    this.attestationService = new AttestationService();
    this.runtimeValidator = new RuntimeValidator();
  }

  async validateMicroApp(appConfig) {
    // 多层验证
    const checks = [
      this.validateSource(appConfig.entry),
      this.validateCode(appConfig),
      this.validateDependencies(appConfig),
      this.validateRuntime(appConfig)
    ];

    const results = await Promise.all(checks);
    
    if (results.every(r => r.valid)) {
      return { valid: true, app: this.wrapSecurely(appConfig) };
    } else {
      throw new Error(`Security validation failed: ${results.filter(r => !r.valid).map(r => r.reason)}`);
    }
  }

  async validateSource(entryUrl) {
    // 验证来源可信度
    const attestation = await this.attestationService.verify(entryUrl);
    
    return {
      valid: attestation.trusted,
      reason: attestation.reason
    };
  }

  async validateCode(appConfig) {
    // 静态代码分析
    const analysis = await this.staticAnalysis(appConfig.entry);
    
    return {
      valid: !analysis.hasMaliciousPatterns,
      reason: analysis.findings.join(', ')
    };
  }

  wrapSecurely(appConfig) {
    // 用安全包装器包装应用
    return {
      ...appConfig,
      wrapper: new SecureExecutionWrapper(appConfig)
    };
  }
}

// 使用同态加密的通信
class HomomorphicEncryption {
  constructor() {
    this.keyPair = this.generateKeyPair();
  }

  async encrypt(data) {
    // 使用同态加密算法
    return await crypto.subtle.encrypt(
      { name: 'Homomorphic-RSA' }, // 概念性算法
      this.keyPair.publicKey,
      new TextEncoder().encode(JSON.stringify(data))
    );
  }

  async decrypt(encryptedData) {
    const decrypted = await crypto.subtle.decrypt(
      { name: 'Homomorphic-RSA' },
      this.keyPair.privateKey,
      encryptedData
    );
    
    return JSON.parse(new TextDecoder().decode(decrypted));
  }

  async performOperation(encryptedA, encryptedB, operation) {
    // 在加密状态下执行操作
    return await this.homomorphicOperation(encryptedA, encryptedB, operation);
  }
}

// 微应用间安全通信
class SecureCommunication {
  constructor() {
    this.encryption = new HomomorphicEncryption();
  }

  async sendSecureMessage(message, targetApp) {
    const encryptedMessage = await this.encryption.encrypt(message);
    
    // 发送加密消息
    return await fetch(`${targetApp.entry}/secure-message`, {
      method: 'POST',
      body: encryptedMessage,
      headers: { 'Content-Type': 'application/octet-stream' }
    });
  }
}

// Serverless 微应用架构
class ServerlessMicroApp {
  constructor(config) {
    this.config = config;
    this.functionUrl = config.functionUrl;
  }

  async bootstrap(props) {
    // Serverless 函数调用
    const response = await fetch(`${this.functionUrl}/bootstrap`, {
      method: 'POST',
      body: JSON.stringify({ props }),
      headers: { 'Content-Type': 'application/json' }
    });
    
    return await response.json();
  }

  async mount(props) {
    // 获取渲染内容
    const response = await fetch(`${this.functionUrl}/render`, {
      method: 'POST',
      body: JSON.stringify({ props }),
      headers: { 'Content-Type': 'application/json' }
    });
    
    const html = await response.text();
    props.container.innerHTML = html;
    
    // 执行客户端逻辑
    await this.executeClientCode(props);
  }

  async executeClientCode(props) {
    // 在安全沙箱中执行客户端代码
    const response = await fetch(`${this.functionUrl}/client-code`);
    const code = await response.text();
    
    await new SecureSandbox().execute(code, { container: props.container });
  }
}

// 边缘计算优化
class EdgeOptimizedLoader {
  constructor() {
    this.edgeNodes = new Map();
    this.latencyMap = new Map();
  }

  async loadAppClosestToUser(appConfig) {
    // 找到最近的边缘节点
    const closestNode = await this.findClosestEdgeNode();
    
    // 从最近的节点加载应用
    const entry = this.getEdgeEntry(appConfig.entry, closestNode);
    
    return await this.loadApp(entry);
  }

  async findClosestEdgeNode() {
    const testPromises = Array.from(this.edgeNodes.entries()).map(async ([nodeId, node]) => {
      const startTime = Date.now();
      
      try {
        await fetch(`${node.url}/ping`);
        const latency = Date.now() - startTime;
        this.latencyMap.set(nodeId, latency);
        return { nodeId, latency };
      } catch {
        return { nodeId, latency: Infinity };
      }
    });

    const results = await Promise.all(testPromises);
    const closest = results.reduce((min, current) => 
      current.latency < min.latency ? current : min
    );
    
    return this.edgeNodes.get(closest.nodeId);
  }
}

// 声明式微前端配置
class DeclarativeMicroFrontend {
  constructor(config) {
    this.config = config;
    this.appRegistry = new AppRegistry();
  }

  async setup() {
    // 声明式配置解析
    const parsedConfig = this.parseDeclarativeConfig(this.config);
    
    // 自动注册和配置微应用
    for (const app of parsedConfig.apps) {
      await this.registerApp(app);
    }
    
    // 设置通信和状态管理
    await this.setupCommunication(parsedConfig.communication);
    await this.setupStateManagement(parsedConfig.state);
  }

  parseDeclarativeConfig(config) {
    return {
      apps: config.apps.map(app => ({
        name: app.name,
        entry: app.src,
        routes: app.routes,
        permissions: app.permissions || [],
        dependencies: app.dependencies || []
      })),
      communication: config.communication,
      state: config.state
    };
  }

  async registerApp(app) {
    return registerMicroApp({
      name: app.name,
      entry: app.entry,
      container: this.getContainerForApp(app),
      activeRule: this.getRouteRule(app.routes),
      props: { permissions: app.permissions }
    });
  }
}

// 使用示例
const microFrontend = new DeclarativeMicroFrontend({
  apps: [
    {
      name: 'user-center',
      src: 'https://user-center.com/app.js',
      routes: ['/user', '/profile'],
      permissions: ['user:read', 'user:write'],
      dependencies: ['auth-service']
    }
  ],
  communication: {
    type: 'event-bus',
    config: { maxRetries: 3 }
  },
  state: {
    persistence: 'local-storage',
    syncStrategy: 'optimistic'
  }
});

await microFrontend.setup();

// 低代码微前端平台
class LowCodeMicroFrontend {
  constructor() {
    this.componentLibrary = new ComponentLibrary();
    this.visualEditor = new VisualEditor();
    this.codeGenerator = new CodeGenerator();
  }

  async buildMicroAppFromVisualConfig(visualConfig) {
    // 从可视化配置生成微应用
    const appCode = await this.codeGenerator.generateFromVisual(visualConfig);
    
    // 部署微应用
    const deployment = await this.deployApp(appCode);
    
    return {
      app: deployment.app,
      url: deployment.url,
      config: visualConfig
    };
  }

  async updateApp(appId, newVisualConfig) {
    // 增量更新应用
    const changes = this.calculateChanges(appId, newVisualConfig);
    
    if (changes.requiresFullRebuild) {
      return await this.buildMicroAppFromVisualConfig(newVisualConfig);
    } else {
      return await this.applyIncrementalUpdate(appId, changes);
    }
  }
}

// 可视化配置示例
const visualConfig = {
  layout: {
    type: 'grid',
    rows: 2,
    columns: 3
  },
  components: [
    {
      id: 'user-profile',
      type: 'UserProfile',
      position: { row: 0, col: 0, span: 2 },
      props: { userId: 'context.userId' }
    },
    {
      id: 'user-settings',
      type: 'UserSettings',
      position: { row: 0, col: 2, span: 1 },
      props: { userId: 'context.userId' }
    }
  ],
  dataFlow: {
    context: {
      userId: 'globalState.user.id'
    },
    events: [
      {
        source: 'user-profile',
        event: 'userUpdated',
        target: 'globalState',
        action: 'setUser'
      }
    ]
  }
};

// 微前端标准协议实现
class MicroFrontendStandardProtocol {
  constructor() {
    this.protocolVersion = '2.0';
    this.supportedFeatures = [
      'lifecycle',
      'communication',
      'routing',
      'state-management',
      'security'
    ];
  }

  async handshake(microApp) {
    const clientInfo = {
      protocolVersion: this.protocolVersion,
      supportedFeatures: this.supportedFeatures,
      capabilities: microApp.getCapabilities()
    };

    const response = await fetch(`${microApp.entry}/protocol-handshake`, {
      method: 'POST',
      body: JSON.stringify(clientInfo),
      headers: { 'Content-Type': 'application/json' }
    });

    return await response.json();
  }

  validateMicroApp(microApp) {
    // 验证是否符合标准协议
    const requiredMethods = ['bootstrap', 'mount', 'unmount'];
    const optionalMethods = ['update'];

    return requiredMethods.every(method => typeof microApp[method] === 'function');
  }
}