spec/fixtures/pages/shared_worker.html (12 lines of code) (raw):
<html>
<body>
<script type="text/javascript" charset="utf-8">
const {ipcRenderer} = require('electron')
// Pass a random parameter to create independent worker.
let worker = new SharedWorker(`../workers/shared_worker_node.js?a={Math.random()}`)
worker.port.onmessage = function (event) {
ipcRenderer.sendToHost(event.data)
}
</script>
</body>
</html>