import { mapKeys } from "https://deno.land/std@0.102.0/collections/map_keys.ts";
Applies the given transformer to all keys in the given record's entries and returns a new record containing the transformed entries.
If the transformed entries contain the same key multiple times, only the last one will appear in the returned record.
Example:
const counts = { a: 5, b: 3, c: 8 }
console.assert(mapKeys(counts, it => it.toUppercase()) === {
A: 5,
B: 3,
C: 8,
})