Javascript || In sert object conditionally into array array object

Question

I have following data,

const array1 = [{id:1,name:'john'},{id:2,name:'peter'}];
const userObject={};

and I am forming new array of object like ,

const newarray =[...array1, userObject];

My requirement is ,if userObject is empty {},then i dont want to pass it in new array like,

const newarray =[...array1];

else

const newarray =[...array1, userObject];