Default Permissions

import { Command, type ChatInputCommand } from '@sapphire/framework';
import { applyLocalizedBuilder } from '@sapphire/plugin-i18next';
import { PermissionFlagsBits } from 'discord-api-types/v10';

export class UserCommand extends Command {
  public override registerApplicationCommands(registry: ChatInputCommand.Registry) {
    registry.registerChatInputCommand((builder) =>
      applyLocalizedBuilder(builder, 'setup:CommandName', 'setup:CommandDescription').setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
    );
  }

  public override async chatInputRun(interaction: Command.ChatInputCommandInteraction) {
    await interaction.reply({
      content: `...`,
      ephemeral: true
    });
  }
}