feat: add support for nsfw commands

packages/builders/src/interactions/slashCommands/Assertions.ts

@@ -94,3 +94,7 @@ const memberPermissionPredicate = s.union(
 export function validateDefaultMemberPermissions(permissions: unknown) {
 	return memberPermissionPredicate.parse(permissions);
 }
+
+export function validateNSFW(value: unknown): asserts value is boolean {
+	booleanPredicate.parse(value);
+}

packages/builders/src/interactions/slashCommands/SlashCommandBuilder.ts

@@ -13,6 +13,7 @@ import {
 	validateDMPermission,
 	validateMaxOptionsLength,
 	validateRequiredParameters,
+	validateNSFW,
 } from './Assertions.js';
 import { SlashCommandSubcommandBuilder, SlashCommandSubcommandGroupBuilder } from './SlashCommandSubcommands.js';
 import { SharedNameAndDescription } from './mixins/NameAndDescription.js';
@@ -64,6 +65,11 @@ export class SlashCommandBuilder {
 	 */
 	public readonly dm_permission: boolean | undefined = undefined;
 
+	/**
+	 * Whether this command is NSFW
+	 */
+	public readonly nsfw: boolean | undefined = undefined;
+
 	/**
 	 * Returns the final data that should be sent to Discord.
 	 *
@@ -134,6 +140,18 @@ export class SlashCommandBuilder {
 		return this;
 	}
 
+	/**
+	 * Sets whether this command is NSFW
+	 *
+	 * @param nsfw - Whether this command is NSFW
+	 */
+	public setNSFW(nsfw = true) {
+		// Assert the value matches the conditions
+		validateNSFW(nsfw);
+		Reflect.set(this, 'nsfw', nsfw);
+		return this;
+	}
+
 	/**
 	 * Adds a new subcommand group to this command
 	 *

packages/discord.js/src/managers/ApplicationCommandManager.js

@@ -252,6 +252,7 @@ class ApplicationCommandManager extends CachedManager {
       name: command.name,
       name_localizations: command.nameLocalizations ?? command.name_localizations,
       description: command.description,
+      nsfw: command.nsfw,
       description_localizations: command.descriptionLocalizations ?? command.description_localizations,
       type: command.type,
       options: command.options?.map(o => ApplicationCommand.transformOption(o)),

packages/discord.js/src/structures/ApplicationCommand.js

@@ -52,6 +52,12 @@ class ApplicationCommand extends Base {
      */
     this.type = data.type;
 
+    /**
+     * Whether this command is age-restricted (18+)
+     * @type {boolean}
+     */
+    this.nsfw = data.nsfw ?? false;
+
     this._patch(data);
   }
 
@@ -188,6 +194,7 @@ class ApplicationCommand extends Base {
    * {@link ApplicationCommandType.ChatInput}
    * @property {Object<Locale, string>} [nameLocalizations] The localizations for the command name
    * @property {string} description The description of the command, if type is {@link ApplicationCommandType.ChatInput}
+   * @property {boolean} [nsfw] Whether the command is age-restricted
    * @property {Object<Locale, string>} [descriptionLocalizations] The localizations for the command description,
    * if type is {@link ApplicationCommandType.ChatInput}
    * @property {ApplicationCommandType} [type=ApplicationCommandType.ChatInput] The type of the command
@@ -377,6 +384,7 @@ class ApplicationCommand extends Base {
       ('description' in command && command.description !== this.description) ||
       ('version' in command && command.version !== this.version) ||
       (command.type && command.type !== this.type) ||
+      ('nsfw' in command && command.nsfw !== this.nsfw) ||
       // Future proof for options being nullable
       // TODO: remove ?? 0 on each when nullable
       (command.options?.length ?? 0) !== (this.options?.length ?? 0) ||

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

@@ -419,6 +419,7 @@ export class ApplicationCommand<PermissionsFetchType = {}> extends Base {
   >;
   public type: ApplicationCommandType;
   public version: Snowflake;
+  public nsfw: boolean;
   public delete(): Promise<ApplicationCommand<PermissionsFetchType>>;
   public edit(data: Partial<ApplicationCommandData>): Promise<ApplicationCommand<PermissionsFetchType>>;
   public setName(name: string): Promise<ApplicationCommand<PermissionsFetchType>>;
@@ -4169,6 +4170,7 @@ export interface BaseApplicationCommandData {
   nameLocalizations?: LocalizationMap;
   dmPermission?: boolean;
   defaultMemberPermissions?: PermissionResolvable | null;
+  nsfw?: boolean;
 }
 
 export interface AttachmentData {