Botanique/src/commands/misc/ping.ts

import { SlashCommandBuilder } from '@discordjs/builders';
import { Client, CommandInteraction, Message } from 'discord.js';

export default {
	data: new SlashCommandBuilder()
		.setName('ping')
		.setDescription('Pong!'),

	interaction: async (interaction: CommandInteraction, client: Client) => {
		const sent = await interaction.reply({ content: 'Pinging...', fetchReply: true }) as Message;

		interaction.editReply(
			`Roundtrip latency: \
${sent.createdTimestamp - interaction.createdTimestamp}ms
Websocket heartbeat: ${client.ws.ping}ms.`);
	},
};