Helper function that makes creating functions with Akairo much less verbose

akairo.ts

import { CommandOptions, Command } from "discord-akairo";

interface CreateCommand extends CommandOptions {
  /**
   * The exec function can be called in 3 different ways, however,
   * Typescript doesn't seem to be able to support explicit `this`
   * coming from external types, union types or overloads. In order to
   * specify the `this` type the signature MUST be directly assigned 
   * in the interface
   */
  exec: (this: Command, message: Message, args: any, edited: boolean) => any;
  id: string;
}

export const createCommand = ({ id, exec, ...rest }: CreateCommand) => class extends Command {
  constructor() {
    super(id, exec, rest);
  }
};

ping.ts

import { createCommand } from "./akairo.ts";
import { Message } from "discord.js"

export default createCommand({
  id: "ping",
  aliases: ["ping", "🏓"],
  category: "utility",
  description: "Checks latency of the bot",
  async exec(msg: Message) {
    const m = await msg.channel.send("Ping...") as Message;
    const latency = Math.round(m.createdTimestamp - msg.createdTimestamp);
    const response = `Pong! 🏓 Latency: **${latency}ms**`;
    return m.edit(response);
  }
});