ndk.fetchEvent() crashes app with invalid filter

[benjamindedonder]

If I call ndk.fetchEvent() with an invalid filter, a filter with an invalid id, it throws the following error:

Error: Invalid filter(s) detected:
Filter[0].ids[0] is not a valid 64-char hex string: "invalid_id"

Which is fine, but not much later the entire app crashes with the following error:

file://<project_folder>/node_modules/@nostr-dev-kit/ndk/dist/index.mjs:11644
        s.stop();
        ^

ReferenceError: Cannot access 's' before initialization
    at Timeout._onTimeout (file://<project_folder>/node_modules/@nostr-dev-kit/ndk/dist/index.mjs:11644:9)
    at listOnTimeout (node:internal/timers:588:17)
    at process.processTimers (node:internal/timers:523:7)

I looked into your code a bit. I'm by far not experienced enough to understand everything or comment on anything. But my guess is it might be a simple fix right here:

ndk/core/src/ndk/index.ts

Line 1060 in 5d69cea

s.stop();

I think a question mark was forgotten there? And it should be s?.stop(); instead?

I'm assuming the first error is thrown here:

ndk/core/src/ndk/index.ts

Line 1065 in 5d69cea

s = this.subscribe(filters, subscribeOpts);

Which causes s never to be initialized.