BetterMap | /mod.ts | bettermap@v1.3.0

An extension of the Map class with more Array-like features.

Latest

method BetterMap.prototype.findKey

import { BetterMap } from "https://deno.land/x/bettermap@v1.3.0/mod.ts";

findKey(fn: (v: V, k: K) => boolean): K | undefined

Find a key from the Map.

const map = new BetterMap<string, number>("People");
map.set("Doraemon", 10);
map.set("Dora", 28);
console.log(map.findKey(v => v > 10)); // Dora

Parameters

fn: (v: V, k: K) => boolean

Function to be passed.

K | undefined

A key from the map. If none found, returns undefined.