pinafore/src/routes/_utils/timelineItemToSummary.js

export function timelineItemToSummary (item) {
  return {
    id: item.id,
    replyId: (item.in_reply_to_id) || undefined,
    reblogId: (item.reblog && item.reblog.id) || undefined,
    type: item.type || undefined
  }
}