Stubbing this library doesn't work

[sadir]

Please search other issues to make sure this bug has not already been reported. ✅

Hey team, thanks for supporting this library.

Describe the bug

If you want to stub out getStore using Sinon you'll get an error like this:

TypeError: Descriptor for property getStore is non-configurable and non-writable

E.g. in a test file like this

import sinon from "sinon";
import * as netlifyBlobs from "@netlify/blobs";
import { type Store } from "@netlify/blobs";

describe("thing", () => {
    let mockStore: Partial<Store>;
    let setStub: sinon.SinonStub;
    let getStoreStub: sinon.SinonStub;

    beforeEach(() => {
        setStub = sinon.stub().resolves();
        mockStore = {
            set: setStub,
        };
        getStoreStub = sinon.stub(netlifyBlobs, "getStore").returns(mockStore as Store);
    });

1. Is it because getStore is exported as a const here?
2. Why export a function as a const? I've not seen that before
3. How do you recommend people mock / stub out your package

I can just wrap getStore in a module and mock that but it feels like a shame to introduce that complexity to my codebase.

[sadir]

Related: sinonjs/sinon#2377