import { reduceBy } from "https://deno.land/x/ramda@v0.27.2/mod.ts";
Groups the elements of the list according to the result of calling
the String-returning function keyFn
on each element and reduces the elements
of each group to a single value via the reducer function valueFn
.
This function is basically a more general groupBy
function.
Acts as a transducer if a transformer is given in list position.