Function pollUntilReady

pollUntilReady(
    read: () => Promise<T | null>,
    isPending: (state: T) => boolean,
    __namedParameters?: PollOptions,
): Promise<T | null>
Reads a job's state until it stops being pending.

Resolves null when the first read returns nothing. That is "unknown", not "failed": some jobs are complete the moment they exist and never publish a readable status, so treating null as an error would reject work that already succeeded. A short pause before returning gives such a job a beat to settle.
Parameters
- read: () => Promise<T | null>
  null means no state was readable.
- isPending: (state: T) => boolean
  true while the state means "still working".
- __namedParameters: PollOptions = {}
Returns Promise<T | null>
The last state read, or null if the state was never readable.
Example
```
import { pollUntilReady } from "naystack/socials";

const state = await pollUntilReady(
  () => getInstagramContainerStatus(token, containerID),
  (s) => s.status === "IN_PROGRESS",
);
```
- Defined in src/socials/utils/poll.ts:61