import { OrderedMapNonEmpty } from "https://deno.land/x/rimbu@1.2.0/ordered/map-custom/index.ts";
Returns
WithKeyValue<Tp, K, V>["nonEmpty"]
x/rimbu/ordered/map-custom/index.ts>OrderedMapNonEmpty#addEntry
import { OrderedMapNonEmpty } from "https://deno.land/x/rimbu@1.2.0/ordered/map-custom/index.ts";