Expect fails while comparing BigNumber

Can anyone tell, why both of the following expects are failing

const hre = require("hardhat");
const { ethers } = hre;
const { BigNumber, utils } = ethers;

describe("Deploy YDF token and check balance", function () {
    it("Deployer balance should be equal to 30K", async function () {
        
        expect(utils.parseEther("1.0")).to.equals(utils.parseEther("1.0"));
        expect(BigNumber.from("30000000000000000000000")).to.equals(BigNumber.from("30000000000000000000000"));
    });
});

[keithamus]

On second glance this is using a custom BigNumber constructor.

@AbdulRafaySiddiqui you should consider using .deep.equal instead of equals. BigNumber is not a primitive so referential equality will not work on it two instances of BigNumber

[AbdulRafaySiddiqui]

Hmm, that’s the reason, Anyways thanks for your help, I can just use the .deep.equal it’s fine.