refactor: Move me and add fetchMe()

#9029 djs

src/managers/GuildMemberManager.js

@@ -9,6 +9,7 @@ const BaseGuildVoiceChannel = require('../structures/BaseGuildVoiceChannel');
 const { GuildMember } = require('../structures/GuildMember');
 const { Role } = require('../structures/Role');
 const { Events, Opcodes } = require('../util/Constants');
+const { PartialTypes } = require('../util/Constants');
 const DataResolver = require('../util/DataResolver');
 const SnowflakeUtil = require('../util/SnowflakeUtil');
 
@@ -119,6 +120,20 @@ class GuildMemberManager extends CachedManager {
     return data instanceof Buffer ? (options.fetchWhenExisting === false ? null : this.fetch(userId)) : this._add(data);
   }
 
+  /**
+   * The client user as a GuildMember of this guild
+   * @type {?GuildMember}
+   * @readonly
+   */
+  get me() {
+    return (
+      this.resolve(this.client.user.id) ??
+      (this.client.options.partials.includes(PartialTypes.GUILD_MEMBER)
+        ? this._add({ user: { id: this.client.user.id } }, true)
+        : null)
+    );
+  }
+
   /**
    * Options used to fetch a single member from a guild.
    * @typedef {BaseFetchOptions} FetchMemberOptions
@@ -179,9 +194,9 @@ class GuildMemberManager extends CachedManager {
     if (!options || (!options?.query && !options?.user)) {
       // Check Permissions
       if (
-        this.guild.me.permissions.has('KICK_MEMBERS') ||
-        this.guild.me.permissions.has('BAN_MEMBERS') ||
-        this.guild.me.permissions.has('MANAGE_ROLES')
+        this.guild.members.me.permissions.has('KICK_MEMBERS') ||
+        this.guild.members.me.permissions.has('BAN_MEMBERS') ||
+        this.guild.members.me.permissions.has('MANAGE_ROLES')
       ) {
         return this._fetchMany();
       } else {
@@ -205,6 +220,15 @@ class GuildMemberManager extends CachedManager {
     return this._fetchMany(options);
   }
 
+  /**
+   * Fetches the client user as a GuildMember of the guild.
+   * @param {BaseFetchOptions} [options] The options for fetching the member
+   * @returns {Promise<GuildMember>}
+   */
+  fetchMe(options) {
+    return this.fetch({ ...options, user: this.client.user.id });
+  }
+
   /**
    * Options used for searching guild members.
    * @typedef {Object} GuildSearchMembersOptions