egor's denial

const _ = require('lodash');

const obj = [{
    x: 1
}, {
    y: 2,
    z: {
        1: "string"
    },
    sym: Symbol('foo'),
    func: function() {
        console.log("Hey!");
    }
}];

const deepCopy = _.cloneDeep(obj);

deepCopy.funcTwo = function() {
    console.log("BYE!");
};
deepCopy.symTwo = Symbol("foo");

console.log('Comparing original with deep ',
    obj[0] === deepCopy[0]);

// Changing original value
obj[0].x = 10;

console.log("After changing original value");

console.log("Original value ", obj);

console.log("Deep Copy value ", deepCopy);

console.log(obj.sym === deepCopy.sym);
console.log(obj.sym === deepCopy.symTwo);
console.log(obj.func === deepCopy.func);
console.log(deepCopy.funcTwo === deepCopy.func);