fix(ThreadChannel): Make ownerId always present (#10618)

fix: thread owner id is always present

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

Author: Jiralite

packages/discord.js/src/structures/ThreadChannel.js

@@ -6,7 +6,7 @@ const { RESTJSONErrorCodes, ChannelFlags, ChannelType, PermissionFlagsBits, Rout
 const { BaseChannel } = require('./BaseChannel');
 const getThreadOnlyChannel = lazy(() => require('./ThreadOnlyChannel'));
 const TextBasedChannel = require('./interfaces/TextBasedChannel');
-const { DiscordjsError, DiscordjsRangeError, ErrorCodes } = require('../errors');
+const { DiscordjsRangeError, ErrorCodes } = require('../errors');
 const GuildMessageManager = require('../managers/GuildMessageManager');
 const ThreadMemberManager = require('../managers/ThreadMemberManager');
 const ChannelFlagsBitField = require('../util/ChannelFlagsBitField');
@@ -32,6 +32,12 @@ class ThreadChannel extends BaseChannel {
      */
     this.guildId = guild?.id ?? data.guild_id;
 
+    /**
+     * The id of the member who created this thread
+     * @type {Snowflake}
+     */
+    this.ownerId = data.owner_id;
+
     /**
      * A manager of the messages sent to this thread
      * @type {GuildMessageManager}
@@ -122,16 +128,6 @@ class ThreadChannel extends BaseChannel {
 
     this._createdTimestamp ??= this.type === ChannelType.PrivateThread ? super.createdTimestamp : null;
 
-    if ('owner_id' in data) {
-      /**
-       * The id of the member who created this thread
-       * @type {?Snowflake}
-       */
-      this.ownerId = data.owner_id;
-    } else {
-      this.ownerId ??= null;
-    }
-
     if ('last_message_id' in data) {
       /**
        * The last message id sent in this thread, if one was sent
@@ -301,10 +297,6 @@ class ThreadChannel extends BaseChannel {
    * @returns {Promise<?ThreadMember>}
    */
   async fetchOwner(options) {
-    if (!this.ownerId) {
-      throw new DiscordjsError(ErrorCodes.FetchOwnerId, 'thread');
-    }
-
     // TODO: Remove that catch in the next major version
     const member = await this.members._fetchSingle({ ...options, member: this.ownerId }).catch(error => {
       if (error instanceof DiscordAPIError && error.code === RESTJSONErrorCodes.UnknownMember) {

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

@@ -3384,7 +3384,7 @@ export class ThreadChannel<ThreadOnly extends boolean = boolean> extends BaseCha
   public totalMessageSent: number | null;
   public members: ThreadMemberManager;
   public name: string;
-  public ownerId: Snowflake | null;
+  public ownerId: Snowflake;
   public get parent(): If<ThreadOnly, ForumChannel | MediaChannel, TextChannel | NewsChannel> | null;
   public parentId: Snowflake | null;
   public rateLimitPerUser: number | null;