This generic API client loses type information when chaining methods. Fix it so the response type is correctly inferred through the chain.

```typescript
class ApiClient<T> {
  private endpoint: string;
  
  constructor(endpoint: string) {
    this.endpoint = endpoint;
  }
  
  get<U>(id: string): Promise<U> {
    return fetch(`${this.endpoint}/${id}`).then(r => r.json());
  }
  
  transform<U>(fn: (data: T) => U): ApiClient<U> {
    return new ApiClient<U>(this.endpoint);
  }
}

// Usage should infer User, not unknown
const client = new ApiClient('/users');
const user = await client.get<User>('123'); // Should be Promise<User>
```

Create a Terraform module that deploys: 
1. An AWS S3 bucket with versioning enabled
2. A GCP Cloud Storage bucket as backup target  
3. A Cloudflare Worker that syncs between them daily

Include:
- Proper IAM roles (least privilege)
- Environment variable handling
- README with usage example
- Variables for bucket names and regions

Your B2B SaaS has 500 customers on a 3-tier plan ($29/$99/$299). 

Churn analysis shows:
- Tier 1: 8%/mo churn (price-sensitive)
- Tier 2: 3%/mo churn  
- Tier 3: 1%/mo churn
- 60% of Tier 1 users hit API limits monthly

Recommend whether to:
1. Introduce usage-based pricing
2. Add a $49 middle tier
3. Grandfather existing users

Model the 12-month revenue impact for each option.

Implement a token bucket rate limiter in Redis that:
- Allows 100 requests per minute per user
- Returns remaining quota in response
- Handles race conditions correctly
- Expires old buckets after 1 hour of inactivity

Provide:
- Redis Lua script
- Node.js/TypeScript wrapper
- Test cases for edge conditions

Design authentication for microservices that:
- Uses JWTs for user identity
- Propagates user context through service mesh
- Handles token refresh without breaking requests
- Supports service-to-service auth

Provide:
- JWT payload structure
- Middleware code for Node.js services
- Service mesh configuration (Istio or Linkerd)
- Token refresh strategy