Async-map-like NPM

async-map-like

ECMAScript Map like type definition (plus Async).

It has same API Interface with Map - JavaScript | MDN, with additional Async support.

Usage

import { MapLike } from 'async-map-like'

const mapLike: MapLike<string, number> = new Map<string, number>

That's it, enjoy the Duck Typing!

API Reference

/**
 * ES6 Map like Async API
 */
export interface AsyncMapLike<K = any, V = any> {

  size : Promise<number>

  get     (key: K)           : Promise<V | undefined>
  set     (key: K, value: V) : Promise<void>
  has     (key: K)           : Promise<boolean>
  delete  (key: K)           : Promise<void>
  clear   ()                 : Promise<void>

  entries () : AsyncIterableIterator<[K, V]>
  keys    () : AsyncIterableIterator<K>
  values  () : AsyncIterableIterator<V>

  [Symbol.asyncIterator]() : AsyncIterableIterator<[K, V]>

  forEach (
    callbackfn: (
      value : V,
      key   : K,
      map   : AsyncMapLike<K, V>,
    ) => void,
    thisArg?: AsyncMapLike<K, V>,
  ): Promise<void>

}