Javascript function to substract Arrays of Object A from Arrays of Object B (A-B) i.e. getting the differences between two Arrays of Object

array_subtract.js

/**
* this function assumes array A and array B have an id key in
* each of their object
**/

function subtractArray(arrayA, arrayB){
  return arrayA.filter((aElem)=>{
    return !arrayB.find(bElem=>bElem.id === aElem.id)
  });
}