cypress not resolving localstorage item, although it shows on local storage

Question

I'm trying to test my react application. And some data are saved in the local storage, and I want to make sure that these are working. So I started writing tests with cypress. Really cool library, it was so fun that I already wrote ~50 tests. But it started showing problems with local storage.

My code:

describe("delete account",()=>{
    it("delete",()=>{
        cy.visit("/")

        assert.equal(localStorage.getItem("---current---"), null)

        const username = 'abcd1234'
        cy.get('[data-cy=username-input]').click().type(username)
        cy.get('[data-cy=login-button]').click()


        cy.wait(4*1000)

        cy.log({...localStorage})

        // assert.equal(localStorage.getItem(currentPlayerLS), username)
    })
})

My goal was to check when the user logs in, it gets the local storage and checks if the ---current--- player value matches or not. But it raises an exception saying expected null to equal 'abcd1234'

I guessed there was some issue with resolving, so I even added a delay of 4 seconds.

I also logged the whole {...localSotage} says it is an empty dictionary. But the local storage says it has some value stored there.

I'm not sure how to handle it!! Can anyone help me?

Here is the snap: