message: reduce in-view timeout to 1s
diff: @@ -37,7 +37,7 @@ import Timer from '../../utils/Timer';
  const PAGINATE_SIZE = 20;
  const INITIAL_SIZE = 20;
  -const READ_MARKER_INVIEW_THRESHOLD_MS = 10 * 1000;
  +const READ_MARKER_INVIEW_THRESHOLD_MS = 1 * 1000;
  const READ_MARKER_OUTOFVIEW_THRESHOLD_MS = 30 * 1000;
  const READ_RECEIPT_INTERVAL_MS = 500;
  