How to compare JavaScript objects in a unit test?

I would like to know the proper way to compare objects in a unit test. For the purpose of this example, I am using assert and mocha to test a simple library mylib with a method method that returns an object.

var assert = require("assert");
var mylib = require("../src/mylib");

describe("method", function() {
  it("does something clever and returns an object", function() {
    assert.equal(
      JSON.stringify({/* expected object */}), 
      JSON.stringify(mylib.method(["items", "in", "the", "list"])));
  });
});

The above works, but I don't know if using JSON.stringify is a recommended practice. Am I doing this right?