TypeScript GDPR 合规性：隐私法规类型安全

            interface User {
  id: number;
  firstName: string;
  lastName: string;
  email: string;
  dateOfBirth?: Date; // Optional
  address?: Address; // Optional
}

interface Address {
  street: string;
  city: string;
  postalCode: string;
  country: string;
}

function createUser(user: User): void {
  // Processing user data
  console.log(user);
}

const newUser: User = {
  id: 1,
  firstName: 'John',
  lastName: 'Doe',
  email: 'john.doe@example.com',
  // dateOfBirth: new Date('1990-01-01'), // Uncomment to add birth date
  // address: { ... }, // Uncomment to add address
};

createUser(newUser);

            

              
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            interface SensitiveData {
  ssn: string; // Social Security Number
  creditCardNumber: string;
}

function redactSensitiveData(data: SensitiveData) {
  // Incorrect implementation: Potential data leak!
  return { ...data, ssn: 'REDACTED', creditCardNumber: 'REDACTED' };
}

// Correct approach using a new type for redacted data.
interface RedactedSensitiveData {
  ssn: string;
  creditCardNumber: string;
}

function redactSensitiveDataSecure(data: SensitiveData): RedactedSensitiveData {
  return {
    ssn: 'REDACTED',
    creditCardNumber: 'REDACTED',
  };
}

const sensitiveInfo: SensitiveData = {
  ssn: '123-45-6789',
  creditCardNumber: '1234-5678-9012-3456',
};

const redactedData = redactSensitiveDataSecure(sensitiveInfo);
console.log(redactedData);

            

              
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            // Without TypeScript (harder to maintain)
function processOrder(order) {
  // Assume 'order' has properties like 'customerName', 'address', 'items'
  if (order.items && order.items.length > 0) {
    // Process order
  }
}

// With TypeScript (easier to maintain)
interface Order {
  customerName: string;
  address: Address;
  items: OrderItem[];
  orderDate: Date;
}

interface OrderItem {
  productId: number;
  quantity: number;
  price: number;
}

function processOrderTyped(order: Order) {
  if (order.items && order.items.length > 0) {
    // Process order, type safety ensures proper handling of properties
    console.log(`Processing order for ${order.customerName}`);
  }
}

            

              
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            interface User {
  id: number;
  personalData: PersonalData | null;  // Data might be null after deletion
  createdAt: Date;
  deletedAt?: Date; // Indicates deletion
}

interface PersonalData {
  name: string;
  email: string;
}

function createUser(name: string, email: string): User {
  return {
    id: Math.random(),
    personalData: { name, email },
    createdAt: new Date(),
  };
}

function deleteUser(user: User, retentionPeriodInDays: number = 90): User {
  const now = new Date();
  const creationDate = user.createdAt;
  const ageInDays = (now.getTime() - creationDate.getTime()) / (1000 * 3600 * 24);

  if (ageInDays >= retentionPeriodInDays) {
    user.personalData = null;  // Data anonymized
    user.deletedAt = now;
  }
  return user;
}

const newUser = createUser('Alice', 'alice@example.com');
console.log('Original User:', newUser);

const deletedUser = deleteUser(newUser);
console.log('Deleted User:', deletedUser);

            

              
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            interface ConsentPreferences {
  marketing: boolean; // Consent for marketing communications
  analytics: boolean; // Consent for analytics tracking
  personalization: boolean; // Consent for personalized content
  // Include other relevant consent options
}

function updateConsent(userId: number, preferences: ConsentPreferences): void {
  // Store the consent preferences for the user in a database or other storage.
  console.log(`Updating consent preferences for user ${userId}:`, preferences);
}

const newConsent: ConsentPreferences = {
  marketing: true,
  analytics: false,
  personalization: true,
};

updateConsent(123, newConsent);

            

              
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            // Pseudonymization Example
interface UserData {
  id: string; // Unique Identifier
  email: string;
  name: string;
  address?: string;
}

interface PseudonymizedUserData {
  id: string;
  emailHash: string; // Hashed email address
  name: string;
  address?: string;
}

function pseudonymizeUserData(userData: UserData): PseudonymizedUserData {
  const crypto = require('crypto'); // Node.js crypto module
  const emailHash = crypto.createHash('sha256').update(userData.email).digest('hex');

  return {
    id: userData.id,
    emailHash: emailHash,
    name: userData.name,
    address: userData.address,
  };
}

const originalData: UserData = {
  id: 'user-123',
  email: 'john.doe@example.com',
  name: 'John Doe',
  address: '123 Main St',
};

const pseudonymizedData = pseudonymizeUserData(originalData);
console.log(pseudonymizedData);

            

              
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            interface DataBreachNotification {
  date: Date;
  description: string;
  affectedUsers: number;
  breachType: 'confidentiality' | 'integrity' | 'availability';
  dataImpact: string;
  mitigationSteps: string[];
  contactPerson: string;
  // Additional information required by GDPR
}

function notifyDataProtectionAuthority(notification: DataBreachNotification): void {
  // Implement sending the notification
  console.log('Notifying data protection authority:', notification);
}

            

              
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