Private Readonly cancellerPrivate Readonly eventPrivate innerPrivate Readonly lateReturns event if one was already enqueued and drops it from queue. Returns null otherwise.
Always returns as fast as possible.
Note: running it in infinite loop will cause that loop to never end, as it does not allow JS fiber switching, so that another fiber may enqueue that event.
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Reader, which stores all events into internal queue. Then all events can be awaited.
Unlike
busReadSingleEventrequires closing and can't omit any event being triggered while current one is being handled.