import { emptyFastIterator } from "https://deno.land/x/rimbu@1.2.1/stream/custom/fast-iterator-custom.ts";
type
FastIterator<any>
x/rimbu/stream/custom/fast-iterator-custom.ts>emptyFastIterator
import { emptyFastIterator } from "https://deno.land/x/rimbu@1.2.1/stream/custom/fast-iterator-custom.ts";