Dexie Cloud: readBlobSync method fails in service worker environment #2182
Description
As XMLHttpRequest is not available in service worker environment, the code below throws Uncaught (in promise) ReferenceError: XMLHttpRequest is not defined error and the sync state becomes broken. This method is triggered when tryUseServiceWorker: true and there is a blob property in the table.
export function readBlobSync(b) {
const req = new XMLHttpRequest();
req.overrideMimeType("text/plain; charset=x-user-defined");
req.open("GET", URL.createObjectURL(b), false); // Sync
req.send();
if (req.status !== 200 && req.status !== 0) {
throw new Error("Bad Blob access: " + req.status);
}
return req.responseText;
}