---------manifest.json
"background": {
"service_worker": "bg-wrapper.js"
}
---------bg-wrapper.js
try {
importScripts('background.js');
} catch (error) {
console.error(error);
}
WorkerGlobalScope.importScripts()
https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/importScripts