feat(ThreadMemberManager): Support pagination fetching (#9035)

* feat: initial commit

* fix: `query`

* fix: `GuildMember` for `member`

* types(ThreadMember): constructor types

* fix: send API properties correctly

Co-authored-by: Almeida <almeidx@pm.me>

* docs(FetchThreadMembersOptions): update `cache` description

* fix: retrieve from option

Co-authored-by: Almeida <almeidx@pm.me>

* fix: fix fetch many

* types(FetchThreadMembersOptions): add `withMember`

* types: stricter types

* types: infer possible guild member

* chore: reference member in getter

* types: remove `<false>`

* style: remove line

* chore: markdown

* types: remove `?`

* docs: remove irrelevant part

* fix: prevent crash

* refactor: make `member` `@private`

It will be confusing to have `guildMember` and `member`, specially since the former accounts for the latter.

---------

Co-authored-by: Almeida <almeidx@pm.me>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/discord.js/src/managers/ThreadMemberManager.js

@@ -1,6 +1,7 @@
 'use strict';
 
 const { Collection } = require('@discordjs/collection');
+const { makeURLSearchParams } = require('@discordjs/rest');
 const { Routes } = require('discord-api-types/v10');
 const CachedManager = require('./CachedManager');
 const { DiscordjsTypeError, ErrorCodes } = require('../errors');
@@ -29,10 +30,10 @@ class ThreadMemberManager extends CachedManager {
 
   _add(data, cache = true) {
     const existing = this.cache.get(data.user_id);
-    if (cache) existing?._patch(data);
+    if (cache) existing?._patch(data, { cache });
     if (existing) return existing;
 
-    const member = new ThreadMember(this.thread, data);
+    const member = new ThreadMember(this.thread, data, { cache });
     if (cache) this.cache.set(data.user_id, member);
     return member;
   }
@@ -112,15 +113,35 @@ class ThreadMemberManager extends CachedManager {
   }
 
   /**
+   * Options used to fetch a thread member.
    * @typedef {BaseFetchOptions} FetchThreadMemberOptions
    * @property {ThreadMemberResolvable} member The thread member to fetch
+   * @property {boolean} [withMember] Whether to also return the guild member associated with this thread member
    */
 
   /**
-   * @typedef {Object} FetchThreadMembersOptions
+   * Options used to fetch multiple thread members with guild member data.
+   * <info>With `withMember` set to `true`, pagination is enabled.</info>
+   * @typedef {Object} FetchThreadMembersWithGuildMemberDataOptions
+   * @property {true} withMember Whether to also return the guild member data
+   * @property {Snowflake} [after] Consider only thread members after this id
+   * @property {number} [limit] The maximum number of thread members to return
+   * @property {boolean} [cache] Whether to cache the fetched thread members and guild members
+   */
+
+  /**
+   * Options used to fetch multiple thread members without guild member data.
+   * @typedef {Object} FetchThreadMembersWithoutGuildMemberDataOptions
+   * @property {false} [withMember] Whether to also return the guild member data
    * @property {boolean} [cache] Whether to cache the fetched thread members
    */
 
+  /**
+   * Options used to fetch multiple thread members.
+   * @typedef {FetchThreadMembersWithGuildMemberDataOptions|
+   * FetchThreadMembersWithoutGuildMemberDataOptions} FetchThreadMembersOptions
+   */
+
   /**
    * Fetches thread member(s) from Discord.
    * <info>This method requires the {@link GatewayIntentBits.GuildMembers} privileged gateway intent.</info>
@@ -130,25 +151,31 @@ class ThreadMemberManager extends CachedManager {
    */
   fetch(options) {
     if (!options) return this._fetchMany();
-    const { member, cache, force } = options;
+    const { member, withMember, cache, force } = options;
     const resolvedMember = this.resolveId(member ?? options);
-    if (resolvedMember) return this._fetchSingle({ member: resolvedMember, cache, force });
+    if (resolvedMember) return this._fetchSingle({ member: resolvedMember, withMember, cache, force });
     return this._fetchMany(options);
   }
 
-  async _fetchSingle({ member, cache, force = false }) {
+  async _fetchSingle({ member, withMember, cache, force = false }) {
     if (!force) {
       const existing = this.cache.get(member);
       if (existing) return existing;
     }
 
-    const data = await this.client.rest.get(Routes.threadMembers(this.thread.id, member));
+    const data = await this.client.rest.get(Routes.threadMembers(this.thread.id, member), {
+      query: makeURLSearchParams({ with_member: withMember }),
+    });
+
     return this._add(data, cache);
   }
 
-  async _fetchMany(options = {}) {
-    const data = await this.client.rest.get(Routes.threadMembers(this.thread.id));
-    return data.reduce((col, member) => col.set(member.user_id, this._add(member, options.cache)), new Collection());
+  async _fetchMany({ withMember, after, limit, cache } = {}) {
+    const data = await this.client.rest.get(Routes.threadMembers(this.thread.id), {
+      query: makeURLSearchParams({ with_member: withMember, after, limit }),
+    });
+
+    return data.reduce((col, member) => col.set(member.user_id, this._add(member, cache)), new Collection());
   }
 }
 

packages/discord.js/src/structures/ThreadMember.js

@@ -8,7 +8,7 @@ const ThreadMemberFlagsBitField = require('../util/ThreadMemberFlagsBitField');
  * @extends {Base}
  */
 class ThreadMember extends Base {
-  constructor(thread, data) {
+  constructor(thread, data, extra = {}) {
     super(thread.client);
 
     /**
@@ -35,12 +35,23 @@ class ThreadMember extends Base {
      */
     this.id = data.user_id;
 
-    this._patch(data);
+    this._patch(data, extra);
   }
 
-  _patch(data) {
+  _patch(data, extra = {}) {
     if ('join_timestamp' in data) this.joinedTimestamp = Date.parse(data.join_timestamp);
     if ('flags' in data) this.flags = new ThreadMemberFlagsBitField(data.flags).freeze();
+
+    if ('member' in data) {
+      /**
+       * The guild member associated with this thread member.
+       * @type {?GuildMember}
+       * @private
+       */
+      this.member = this.thread.guild.members._add(data.member, extra.cache);
+    } else {
+      this.member ??= null;
+    }
   }
 
   /**
@@ -58,7 +69,7 @@ class ThreadMember extends Base {
    * @readonly
    */
   get guildMember() {
-    return this.thread.guild.members.resolve(this.id);
+    return this.member ?? this.thread.guild.members.resolve(this.id);
   }
 
   /**

packages/discord.js/typings/index.d.ts

@@ -2981,10 +2981,11 @@ export class ThreadChannel<Forum extends boolean = boolean> extends TextBasedCha
   public toString(): ChannelMention;
 }
 
-export class ThreadMember extends Base {
-  private constructor(thread: ThreadChannel, data?: RawThreadMemberData);
+export class ThreadMember<HasMemberData extends boolean = boolean> extends Base {
+  private constructor(thread: ThreadChannel, data: RawThreadMemberData, extra?: unknown);
   public flags: ThreadMemberFlagsBitField;
-  public get guildMember(): GuildMember | null;
+  private member: If<HasMemberData, GuildMember>;
+  public get guildMember(): HasMemberData extends true ? GuildMember : GuildMember | null;
   public id: Snowflake;
   public get joinedAt(): Date | null;
   public joinedTimestamp: number | null;
@@ -4097,8 +4098,18 @@ export class ThreadMemberManager extends CachedManager<Snowflake, ThreadMember,
   public thread: AnyThreadChannel;
   public get me(): ThreadMember | null;
   public add(member: UserResolvable | '@me', reason?: string): Promise<Snowflake>;
+
+  public fetch(
+    options: ThreadMember<true> | ((FetchThreadMemberOptions & { withMember: true }) | { member: ThreadMember<true> }),
+  ): Promise<ThreadMember<true>>;
+
   public fetch(options: ThreadMemberResolvable | FetchThreadMemberOptions): Promise<ThreadMember>;
-  public fetch(options?: FetchThreadMembersOptions): Promise<Collection<Snowflake, ThreadMember>>;
+
+  public fetch(
+    options: FetchThreadMembersWithGuildMemberDataOptions,
+  ): Promise<Collection<Snowflake, ThreadMember<true>>>;
+
+  public fetch(options?: FetchThreadMembersWithoutGuildMemberDataOptions): Promise<Collection<Snowflake, ThreadMember>>;
   public fetchMe(options?: BaseFetchOptions): Promise<ThreadMember>;
   public remove(id: Snowflake | '@me', reason?: string): Promise<Snowflake>;
 }
@@ -5195,12 +5206,25 @@ export interface FetchReactionUsersOptions {
 
 export interface FetchThreadMemberOptions extends BaseFetchOptions {
   member: ThreadMemberResolvable;
+  withMember?: boolean;
 }
 
-export interface FetchThreadMembersOptions {
+export interface FetchThreadMembersWithGuildMemberDataOptions {
+  withMember: true;
+  after?: Snowflake;
+  limit?: number;
   cache?: boolean;
 }
 
+export interface FetchThreadMembersWithoutGuildMemberDataOptions {
+  withMember?: false;
+  cache?: boolean;
+}
+
+export type FetchThreadMembersOptions =
+  | FetchThreadMembersWithGuildMemberDataOptions
+  | FetchThreadMembersWithoutGuildMemberDataOptions;
+
 export interface FetchThreadsOptions {
   archived?: FetchArchivedThreadOptions;
   active?: boolean;

packages/discord.js/typings/index.test-d.ts

@@ -1526,17 +1526,29 @@ declare const guildBanManager: GuildBanManager;
   guildBanManager.fetch({ user: '1234567890', after: '1234567890', cache: true, force: false });
 }
 
+declare const threadMemberWithGuildMember: ThreadMember<true>;
 declare const threadMemberManager: ThreadMemberManager;
 {
   expectType<Promise<ThreadMember>>(threadMemberManager.fetch('12345678'));
   expectType<Promise<ThreadMember>>(threadMemberManager.fetch({ member: '12345678', cache: false }));
   expectType<Promise<ThreadMember>>(threadMemberManager.fetch({ member: '12345678', force: true }));
-  expectType<Promise<ThreadMember>>(threadMemberManager.fetch({ member: '12345678', cache: false, force: true }));
+  expectType<Promise<ThreadMember<true>>>(threadMemberManager.fetch({ member: threadMemberWithGuildMember }));
+  expectType<Promise<ThreadMember<true>>>(threadMemberManager.fetch({ member: '12345678901234567', withMember: true }));
   expectType<Promise<Collection<Snowflake, ThreadMember>>>(threadMemberManager.fetch());
   expectType<Promise<Collection<Snowflake, ThreadMember>>>(threadMemberManager.fetch({}));
-  expectType<Promise<Collection<Snowflake, ThreadMember>>>(threadMemberManager.fetch({ cache: true }));
+
+  expectType<Promise<Collection<Snowflake, ThreadMember<true>>>>(
+    threadMemberManager.fetch({ cache: true, limit: 50, withMember: true, after: '12345678901234567' }),
+  );
+
+  expectType<Promise<Collection<Snowflake, ThreadMember>>>(
+    threadMemberManager.fetch({ cache: true, withMember: false }),
+  );
+
   // @ts-expect-error The `force` option cannot be used alongside fetching all thread members.
   threadMemberManager.fetch({ cache: true, force: false });
+  // @ts-expect-error `withMember` needs to be `true` to receive paginated results.
+  threadMemberManager.fetch({ withMember: false, limit: 5, after: '12345678901234567' });
 }
 
 declare const typing: Typing;