import { SortedMapInner } from "https://deno.land/x/rimbu@0.13.0/sorted/map-custom/implementation/immutable.ts";
Returns
[readonly [K, V], SortedMapInner<K, V>]
x/rimbu/sorted/map-custom/implementation/immutable.ts>SortedMapInner#mutateSplitRight
import { SortedMapInner } from "https://deno.land/x/rimbu@0.13.0/sorted/map-custom/implementation/immutable.ts";