Multi Level Groupby Ramda Js

I have been trying to use group by at multiple levels so that the object is grouped by tag, folder and report keys. I was able to groupby at single level but could not proceed furt

Solution 1:

There might be a better/built in solution, but you can use map to group the "inner lists" of your objects like so:

const data = [
  { letter: "a", number: 1, bool: true },
  { letter: "a", number: 2, bool: true },
  { letter: "a", number: 2, bool: false },
  { letter: "b", number: 1, bool: true },
  { letter: "b", number: 1, bool: false },
  { letter: "b", number: 1, bool: false },
  { letter: "c", number: 1, bool: true },
  { letter: "c", number: 2, bool: true },
  { letter: "c", number: 2, bool: false },
  { letter: "c", number: 2, bool: true },
];

const groupByLetterNumberBool = pipe(
  groupBy(prop("letter")),
  map(groupBy(prop("number"))),
  map(map(groupBy(prop("bool"))))
);

groupByLetterNumberBool(data);

Working example here.