import { RMapBase } from "https://deno.land/x/rimbu@0.14.0/collection-types/map-custom/index.ts";
const { ContextBase } = RMapBase;
Module
x/rimbu/collection-types/map-custom/index.ts>RMapBase.ContextBase#isNonEmptyInstance
Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.