Fix TypeScript compilation errors and improve type safety

[Copilot]

This PR addresses code review suggestions from PR #14 by fixing TypeScript compilation errors and improving type safety throughout the codebase.

Issues Fixed

TypeScript Compilation Errors

The codebase had several TypeScript compilation errors preventing successful builds:

• Missing Cloudflare Workers type definitions (DurableObject, DurableObjectState, WebSocketPair)
• Incomplete interface definitions for R2Bucket and D1Database
• Missing webSocket property in ResponseInit for Workers WebSocket support

Type Safety Improvements

Replaced loose any types with proper typed interfaces:

// Before: Using any types
interface PendingRequest {
  resolve: (value: any) => void;
  reject: (reason?: any) => void;
}

// After: Proper typed interfaces
interface HaWebSocketMessage {
  id?: number;
  type: string;
  [key: string]: unknown;
}

interface PendingRequest {
  resolve: (value: unknown) => void;
  reject: (reason?: Error) => void;
}

AI SDK Integration

Simplified the AI integration to use Workers AI binding directly instead of the problematic AI SDK wrapper, which was causing compatibility issues:

// Before: Complex AI SDK wrapper with compatibility issues
const workersai = createWorkersAI({ binding: c.env.AI });
const result = await generateText({
  model: workersai('@cf/meta/llama-3.1-8b-instruct'),
  prompt
});

// After: Direct Workers AI binding usage
const result = await c.env.AI.run('@cf/meta/llama-3.1-8b-instruct', {
  prompt,
  max_tokens: 512
});

Results

• ✅ All TypeScript compilation errors resolved
• ✅ All tests passing (9/9)
• ✅ Improved type safety without breaking existing functionality
• ✅ Cleaner, more maintainable code

Fixes #19.

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[cloudflare-workers-and-pages]

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Status	Name	Latest Commit	Updated (UTC)
❌ Deployment failed View logs	hassio-proxy	98bfb43	Aug 23 2025, 10:44 AM

[jmbish04]

/gemini review

[gemini-code-assist]

Code Review

This pull request does a great job of improving TypeScript compilation and type safety across the project. The introduction of specific interfaces for Home Assistant WebSocket messages and fleshing out the Cloudflare Worker type definitions are excellent changes. The refactoring of the AI integration to use the native binding simplifies the code. My feedback focuses on one area in the test files where type safety could be further improved by avoiding as any casts, in line with the goals of this PR.