• Version: v11.8.0
• Platform: Darwin NY-GTaverasMBA 17.7.0 Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT 2018; root:xnu-4570.71.2~1/RELEASE_X86_64 x86_64
• Subsystem: worker_threads

The following code produces this error:

ERROR:

import { workerData } from 'worker_threads';
         ^^^^^^^^^^
SyntaxError: The requested module 'worker_threads' does not provide an export named 'workerData'

main.mjs:

import { Worker } from 'worker_threads';

const worker = new Worker('./worker.js', { workerData: 'Hello from main thread' });

worker.mjs:

import { workerData } from 'worker_threads';

console.log(workerData);

COMMAND:
node --experimental-modules main.mjs