Substrate/Polkadot.js - get extrinsics at event

extrinsics-at-event.ts

export const extrinsicsAtEvent = (
  events: Vec<EventRecord>,
  block: SignedBlock,
  filter?: {
    method?: string;
  }
) => {
  return block.block.extrinsics.filter((ex, index) =>
    Boolean(
      events.find(
        (event) =>
          event.phase.isApplyExtrinsic &&
          event.phase.asApplyExtrinsic.eq(index) &&
          (!filter?.method || ex.method.method.toString() === filter.method)
      )
    )
  );
};