fix(rpc): expose onEveryOpen in RPC Client Callbacks

[jfrank-summit]

Summary

Refactors the RPC client callback definitions to use a shared RpcClientCallbacks type and explicitly exposes the onEveryOpen callback which was previously missing from the TypeScript definition.

Motivation and Context

Fixes #495.

The createRpcClient function supports an onEveryOpen callback at runtime, but the TypeScript definition for the callbacks parameter was missing this property. This forced consumers to cast their callback objects to any or ignore type errors when trying to use this hook (e.g., for reconnection logic).

Implementation Details

• packages/utility/rpc/src/rpc/types.ts:
  • Created a new exported type RpcClientCallbacks.
  • Added onEveryOpen to the interface.
• packages/utility/rpc/src/rpc/client.ts:
  • Updated createRpcClient to use RpcClientCallbacks instead of an inline type.
• packages/utility/rpc/src/rpc/api/definition.ts:
  • Updated createApiDefinition and its generated client to use RpcClientCallbacks.

Breaking Changes

None. This is a non-breaking type definition update. The runtime behavior remains the same, but the TypeScript types are now more accurate.

Testing

• Existing tests should pass.
• Manual verification: Using onEveryOpen in a TypeScript project with this change should no longer trigger a type error.

[Copilot]

Pull Request Overview

This PR fixes a TypeScript type definition issue where the onEveryOpen callback was missing from the RPC client's callback options, despite being supported at runtime. The change refactors the inline callback type definitions to use a shared RpcClientCallbacks type.

• Introduces a new exported RpcClientCallbacks type that includes all callback options, including the previously missing onEveryOpen
• Updates createRpcClient and createApiDefinition to use the shared type instead of inline definitions
• Eliminates type inconsistencies between the TypeScript definitions and runtime behavior

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/utility/rpc/src/rpc/types.ts	Adds new RpcClientCallbacks type with all callback options including onEveryOpen
packages/utility/rpc/src/rpc/client.ts	Refactors createRpcClient to use the new shared RpcClientCallbacks type
packages/utility/rpc/src/rpc/api/definition.ts	Updates createClient and createMockServerClient to use the shared RpcClientCallbacks type

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.