Cannot change file name, it is marked readonly

[crystalfp]

First attempt at electron-store. I need to have two different files, so I tried to setup the name in the constructor this way (as explained in the documentation:

const options: Store.Options<Record<string, unknown>> = {};
options.name = "preferences";

But Typescript complains: Cannot assign to 'name' because it is a read-only property.
What should I do?
Thanks!
mario