feat(guild): add support for setting MFA level (#8024)

packages/discord.js/src/structures/Guild.js

@@ -1138,6 +1138,22 @@ class Guild extends AnonymousGuild {
     return this;
   }
 
+  /**
+   * Sets the guild's MFA level
+   * @param {GuildMFALevel} level The MFA level
+   * @param {string} [reason] Reason for changing the guild's MFA level
+   * @returns {Promise<Guild>}
+   */
+  async setMFALevel(level, reason) {
+    await this.client.rest.post(Routes.guildMFA(this.id), {
+      body: {
+        level,
+      },
+      reason,
+    });
+    return this;
+  }
+
   /**
    * Leaves the guild.
    * @returns {Promise<Guild>}

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

@@ -1167,6 +1167,7 @@ export class Guild extends AnonymousGuild {
   public setVerificationLevel(verificationLevel: GuildVerificationLevel | null, reason?: string): Promise<Guild>;
   public setPremiumProgressBarEnabled(enabled?: boolean, reason?: string): Promise<Guild>;
   public setWidgetSettings(settings: GuildWidgetSettingsData, reason?: string): Promise<Guild>;
+  public setMFALevel(level: GuildMFALevel, reason?: string): Promise<Guild>;
   public toJSON(): unknown;
 }