worker_threads.SHARE_ENV

History

Type:symbol

A special value that can be passed as the env option of the Worker constructor, to indicate that the current thread and the Worker thread should share read and write access to the same set of environment variables.

import process from 'node:process';
import { Worker, SHARE_ENV } from 'node:worker_threads';
new Worker('process.env.SET_IN_WORKER = "foo"', { eval: true, env: SHARE_ENV })
  .once('exit', () => {
    console.log(process.env.SET_IN_WORKER);  // Prints 'foo'.
  });

JavaScript

const { Worker, SHARE_ENV } = require('node:worker_threads');
new Worker('process.env.SET_IN_WORKER = "foo"', { eval: true, env: SHARE_ENV })
  .once('exit', () => {
    console.log(process.env.SET_IN_WORKER);  // Prints 'foo'.
  });

JavaScript