Function patchThreadInfoToIncludeMentionedMembersOfParent

lib/shared/thread-utils.js:1481–1514

(
  threadInfo: ThreadInfo,
  parentThreadInfo: ThreadInfo,
  messageText: string,
  viewerID: string,
)

}

function patchThreadInfoToIncludeMentionedMembersOfParent(
  threadInfo: ThreadInfo,
  parentThreadInfo: ThreadInfo,
  messageText: string,
  viewerID: string,
): ThreadInfo {
  const members: UserIDAndUsername[] = threadInfo.members
    .map(({ id, username }) =>
      username ? ({ id, username }: UserIDAndUsername) : null,
    )
    .filter(Boolean);
  const mentionedNewMembers = extractNewMentionedParentMembers(
    messageText,
    threadInfo,
    parentThreadInfo,
  );
  if (mentionedNewMembers.length === 0) {
    return threadInfo;
  }
  members.push(...mentionedNewMembers);
  const config = threadSpecs[parentThreadInfo.type].protocol().sidebarConfig;
  invariant(config, `Thread type ${parentThreadInfo.type} can't have sidebars`);
  const threadType = config.sidebarThreadType;

  return createPendingThread({
    viewerID,
    threadType,
    members,
    parentThreadInfo,
    threadColor: threadInfo.color,
    name: threadInfo.name,
    sourceMessageID: threadInfo.sourceMessageID,
  });
}

type RoleAndMemberCount = {
  [roleName: string]: number,