InvalidStateError: A mutation operation was attempted on a database that did not allow mutations.

Hi, I am struggling with an error trying to create the database It works only on Chrome, Firefox gives the error: InvalidStateError: A mutation operation was attempted on a database that did not allow mutations. MS Edge does not work at all.

My code is something like this:

STORE = "storeName";
VERSION = 1;

  dbPromise = openDb("dbName", this.VERSION, upgradeDB =>
      upgradeDB
        .createObjectStore(this.STORE, { keyPath: "name" })
        .createIndex("name", "name", { unique: true })
    );

[nico-martin]

Unfortunately this is not solved yet. I think the problem is that FF in private mode does not support IndexedDB at all. Is there a way to create a workaround or to detect that IndexedDB is no available? https://bugzilla.mozilla.org/show_bug.cgi?id=781982

[codinronan]

@jakearchibald sorry you’re right, I didn’t read enough code. The catch on this line catches the sub-promise, not the outer one. The exception will escape as intended.

Thanks!