Yes, this crashes with `"wrangler": "3.78.10"`, but works fine with wrangler on `3.78.9`: ```js fun

function isNotEmptyObject<T extends Record<string, any>>(val: T | unknown): val is T {
    if (Object.prototype.toString.call(val) !== '[object Object]') return false;
    for (const _ in val as Record<string, any>) {
        return true;
    }
    return false;
}

export default {
    async fetch(request, env, ctx): Promise<Response> {
        if (!isNotEmptyObject(ctx)) throw new Error('ctx');
        return new Response('Hello World!');
    },
} satisfies ExportedHandler<Env>;

function isNotEmptyObject<T extends Record<string, any>>(val: T | unknown): val is T {
    if (Object.prototype.toString.call(val) !== '[object Object]') return false;
    for (const _ in val as Record<string, any>) {
        return true;
    }
    return false;
}

export default {
    async fetch(request, env, ctx): Promise<Response> {
        if (!isNotEmptyObject(ctx)) throw new Error('ctx');
        return new Response('Hello World!');
    },
} satisfies ExportedHandler<Env>;