JS left join of 2 Obj arrays that share a common key+value

let key = 'id';
let arr1 = [
    { id: "9762 /3/a/z/group( + ) / ()/", date: "2017-01-24" },
    { id: "abdc4051", date: "2017-01-22" }
];

let arr2 = [
    { id: "9762 /3/a/z/group( + ) / ()/", match:true},
    { id: "abdc4051", match: true}
];

arr1.forEach((x,y)=> {
  let a = arr2.find(d => x[key] == d[key]);
  if(a && (a[key] == x[key])) arr1[y] = { ...arr1[y], ...a }
})
//
console.log(arr1);