TheOchulus/commands/testing/user.js

import { SlashCommandBuilder } from 'discord.js';

export const data = new SlashCommandBuilder()
    .setName('user')
    .setDescription('Provides information about the user.');

export async function execute(interaction) {
        // interaction.user is the object representing the user who ran the command
        // interaction.member is the GuildMember object, which represents the user in the specific guild
        await interaction.reply(`This command was run by ${interaction.user.username}, who joined on ${interaction.member.joinedAt}.`);

}