Websockets API with async processing (is there a better way?)

import { WebSocketClient } from "websocket/mod.ts"

import type { WebSocketServer } from "websocket/mod.ts"
import type { WorkerPool } from "./worker_pool.ts"

export const handleSocket = (wss: WebSocketServer, workerPool: WorkerPool) => {
    wss.on("connection", function (ws: WebSocketClient) {
        const returnMessage = (message: string) => {
            ws.send(message)
        }

        ws.on("message", function (message: string) {
            const command = JSON.parse(message)
            const { type } = command

            if (type === "request") {
                workerPool.handleMessage(command, returnMessage)
            }
        })
    })
}