workerama/node/worker.js

Run sync/async function across Worker Threads

const {
  workerData,
  parentPort
} = require('worker_threads');

const {
  fnFilePath,
  fnName,
  fnArgs
} = workerData;

const fnPromise = require(fnFilePath)[fnName](...fnArgs);

parentPort.on('message', async item => {
  try {
    const fn = await fnPromise;

    if (item.done) {
      await fn(item);
      process.exit();
    }

    const {
      value,
      transferList
    } = await fn(item);
    parentPort.postMessage({
      type: 'done',
      value
    }, transferList);
  } catch (error) {
    const value = error instanceof Error ? error.message : error;
    parentPort.postMessage({
      type: 'error',
      value
    });
  }
});