merge 2 arrays using a custom compare function

margeArrays.js

function margeArrays(arr1,arr2,mergeFunc){
  let arr2Temp = [...arr2];
  const arrayMerged = arr1
    .map((t) => {
      const t1 = arr2Temp.filter((el,idx) => mergeFunc(t,el) && arr2Temp.splice(idx, 1) )[0]
      return t1 ? t1 : t
     })
     .concat(arr2Temp);
   return arrayMerged;
}

//EXAMPLE:
const arr1 = [
  {id:"1",from:"arr1"},
  {id:"2",from:"arr1"},
  {id:"3",from:"arr1"}
]
const arr2 = [
  {id:"1",from:"arr2"},
  {id:"4",from:"arr2"},
  {id:"5",from:"arr2"} 	
]

const mergeById = (t,t1) =>  t.id === t1.id

console.log('arrayMerged' ,margeArrays(arr1,arr2,mergeById));
/*it will return:
[
 {id:"1",from:"arr2"},
 {id:"2",from:"arr1"},
 {id:"3",from:"arr1"},
 {id:"4",from:"arr2"},
 {id:"5",from:"arr2"}
]

*/