let fetcher: Signal<number | undefined> = createSignal(3)
let r = createResource(fetcher, async (v) => console.log(v))
fetcher[1](undefined) // doesn't log anything
fetcher[1](null) // doesn't log anything
let fetcher: Signal<number | undefined> = createSignal(3)
let r = createResource(fetcher, async (v) => console.log(v))
fetcher[1](undefined) // doesn't log anything
fetcher[1](null) // doesn't log anything