Problem:

In the latest version type of ExecutionContext was changed from any to unknown.

Before (version 4.20250816.0):

interface ExecutionContext {
  waitUntil(promise: Promise<any>): void;
  passThroughOnException(): void;
  props: any;
}

After (version 4.20251128.0):

interface ExecutionContext<Props = unknown> {
  waitUntil(promise: Promise<any>): void;
  passThroughOnException(): void;
  readonly exports: Cloudflare.Exports;
  readonly props: Props;
}

Because of this change our Typescript compiler is complaining that property that we have in context doesn't exist on unknown.

Proposal:

I am raising a PR where I added option to pass type to ExecutionContext.