index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
    <!-- https://electronjs.org/docs/tutorial/security#csp-meta-tag -->
    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
    <script src="./node_modules/tesseract.js/dist/tesseract.min.js"></script>
  </head>
  <body>
    <script type="module">

      const worker = await Tesseract.createWorker("eng", 1, {
        workerPath: "./node_modules/tesseract.js/dist/worker.min.js",
        logger: m => console.log(m),
        workerBlobURL: false
      });

      (async () => {
        const { data: { text } } = await worker.recognize("./images/testocr.png");
        console.log(text);
        await worker.terminate();
      })();
    </script>
  </body>
</html>