Update command manager and commands to OOP

src/commands/alert.ts

@@ -2,8 +2,12 @@ import { Server } from 'socket.io'
 
 type CommandInput = string[]
 
-module.exports = function (input: CommandInput, io: Server) {
-  const message: string = input.join(' ') ?? null
-  if (!message) return console.log('message is required')
-  io.emit('notification', { message: message })
-}
+export default class AlertCommand {
+  constructor(private readonly io: Server) {}
+
+  public execute(input: CommandInput): void {
+    const message: string = input.join(' ') ?? null
+    if (!message) return console.log('message is required')
+    this.io.emit('notification', { message: message })
+  }
+}