add util isIndirectReplyMsgToRoot()

Author: staltz

readme.ts

@@ -40,6 +40,12 @@ export type Msg<C = Content> = {
  timestamp: number;
 };
 
+export type MsgInThread = Msg<{
+ root?: MsgId;
+ fork?: MsgId;
+ branch?: MsgId;
+}>
+
 export type UnboxedMsg<C = Content> = Msg<C> & {
  value: Msg<C>['value'] & {
  cyphertext: string;

utils.ts

@@ -6,6 +6,7 @@ import {
  VoteContent,
  UnboxedMsg,
  MsgId,
+ MsgInThread,
 } from './readme';
 
 export function isMsg(msg: any): msg is Msg<any> {
@@ -17,7 +18,14 @@ export function isRootMsg(msg: Msg<any>): boolean {
 }
 
 export function isReplyMsgToRoot(rootKey: MsgId) {
- return (msg: Msg<{root?: MsgId}>) => msg?.value?.content?.root === rootKey;
+ return (msg: MsgInThread) => msg?.value?.content?.root === rootKey;
+}
+
+export function isIndirectReplyMsgToRoot(rootKey: MsgId) {
+ return (msg: MsgInThread) =>
+ msg?.value?.content?.root === rootKey ||
+ msg?.value?.content?.branch === rootKey ||
+ msg?.value?.content?.fork === rootKey;
 }
 
 export function isPostMsg(msg: Msg<any>): msg is Msg<PostContent> {