group array and get count

Question

Say I have array like this:

[
   \"foo\",
   \"bar\",
   \"foo\"
   \"bar\",
   \"bar\",
   \"bar\",
   \"zoom\"
]

I want to group it so I

Answer 1

Yeah I guess with Array.prototype.reduce, it's just:

  const map = list.reduce((a, b) => {
            a[b] = a[b] || 0;
            return ++a[b], a;
          }, {});

wondering if there is less verbose way tho.