tesseract.js/src/worker/browser/spawnWorker.js

Pure Javascript Multilingual OCR

'use strict';

/**
 * spawnWorker
 *
 * @name spawnWorker
 * @function create a new Worker in browser
 * @access public
 */
module.exports = ({ workerPath, workerBlobURL }) => {
  let worker;
  if (Blob && URL && workerBlobURL) {
    const blob = new Blob([`importScripts("${workerPath}");`], {
      type: 'application/javascript',
    });
    worker = new Worker(URL.createObjectURL(blob));
  } else {
    worker = new Worker(workerPath);
  }

  return worker;
};