maps

Some special Map implementations for ES6+

Install

npm install maps

Usage

import {HashMap} from 'maps'

class Entity {
	constructor(id) {
		this.id = id
	}
	[Symbol.for('hashCode')]() {
		return this.id
	}
	[Symbol.for('equals')](x) {
		return x instanceof Entity && x.id === this.id
	}
}

const m = new HashMap
const e1 = new Entity(42)
const e2 = new Entity(42)
const test = {}
assert(e1 !== e2)
m.set(e1, test)
assert(m.get(e2) === test)

API

Same as standard Map.