Function filterEvents

packages/node/src/utils/substrate.ts:266–281

(
  events: SubstrateEvent[],
  filterOrFilters?: SubstrateEventFilter | SubstrateEventFilter[],
)

}

export function filterEvents(
  events: SubstrateEvent[],
  filterOrFilters?: SubstrateEventFilter | SubstrateEventFilter[],
): SubstrateEvent[] {
  if (
    !filterOrFilters ||
    (filterOrFilters instanceof Array && filterOrFilters.length === 0)
  ) {
    return events;
  }
  const filters =
    filterOrFilters instanceof Array ? filterOrFilters : [filterOrFilters];
  return events.filter((event) =>
    filters.find((filter) => filterEvent(event, filter)),
  );
}

// TODO: prefetch all known runtime upgrades at once
export async function prefetchMetadata(