'use strict'; const { isMainThread, SHARE_ENV, threadId, Worker } = require('internal/worker'); const { MessagePort, MessageChannel, moveMessagePortToContext, receiveMessageOnPort } = require('internal/worker/io'); module.exports = { isMainThread, MessagePort, MessageChannel, moveMessagePortToContext, receiveMessageOnPort, threadId, SHARE_ENV, Worker, parentPort: null, workerData: null, };