| 1 | import { BroadcastChannel } from 'worker_threads'; |
| 2 | |
| 3 | import BaseError from '../exception/BaseError'; |
| 4 | import type { |
| 5 | BroadcastChannelRequest, |
| 6 | BroadcastChannelResponse, |
| 7 | MessageEvent, |
| 8 | } from '../types/WorkerBroadcastChannel'; |
| 9 | |
| 10 | export default abstract class WorkerBroadcastChannel extends BroadcastChannel { |
| 11 | protected constructor() { |
| 12 | super('worker'); |
| 13 | } |
| 14 | |
| 15 | public sendRequest(request: BroadcastChannelRequest): void { |
| 16 | this.postMessage(request); |
| 17 | } |
| 18 | |
| 19 | protected sendResponse(response: BroadcastChannelResponse): void { |
| 20 | this.postMessage(response); |
| 21 | } |
| 22 | |
| 23 | protected isRequest(message: any): boolean { |
| 24 | return Array.isArray(message) && message.length === 3; |
| 25 | } |
| 26 | |
| 27 | protected isResponse(message: any): boolean { |
| 28 | return Array.isArray(message) && message.length === 2; |
| 29 | } |
| 30 | |
| 31 | protected validateMessageEvent(messageEvent: MessageEvent): void { |
| 32 | if (Array.isArray(messageEvent.data) === false) { |
| 33 | throw new BaseError('Worker broadcast channel protocol message event data is not an array'); |
| 34 | } |
| 35 | } |
| 36 | } |