Lodash fiddle

Fiddle with loadsh.min.js external resource

HTML

<script src="https://cdn.jsdelivr.net/lodash/4.17.2/lodash.min.js"></script>

JavaScript

const arr1 = [{ x: 1, y: 2, z:3 }, { x: 2, y: 1, z:4 }];

const arr2 = [{ x: 1, y: 2, a:5 }, { x: 2, y: 3, a:4 }];

const customComparator = (valueFromFirstArray, valueFromSecondArray) => valueFromFirstArray.x === valueFromSecondArray.x && valueFromFirstArray.y === valueFromSecondArray.y;

const result = _.differenceWith(arr1, arr2, customComparator);

console.log(result);