Review usage of Revocable proxies

[rido-min]

Agents-for-js/packages/agents-hosting/src/baseAdapter.ts

Line 143 in 44e8bd1

private makeRevocable<T extends Record<string, any>>(

[ceciliaavila]

Hi @rido-min ,

Proxy.revocable wraps an object in a proxy that can be revoked, preventing further access to the original object.

This mechanism enhances security by ensuring that once the proxy is revoked, any attempt to interact with the underlying object results in an error.

In our case, it’s used to wrap the TurnContext, ensuring it's only accessible during the middleware pipeline, and any access attempts after the turn has completed will throw an error.

It’s a built-in JavaScript feature and the recommended approach for controlling object access and lifecycle.

While there are some downsides—such as minor performance overhead and potential runtime errors post-revocation—these are not significant in this scoped implementation.

Finally, the linked PR documents the use of proxies in the code to help maintenance.