constrained-map

Install

npm install constrained-map

Usage

import { ConstrainedMap } from 'constrained-map'

class Request { /* ... */ }
const map = new ConstrainedMap<[[Request, number], [string, string]]>

const requestKey = new Request()
map.set(requestKey, 1)

const requestValue = map.get(requestKey) // type constrained to number


const strKey = 'key'
map.set(strKey, 'value')

const strValue = map.get(strKey) // type constrained to string

Credits

• Me, myself and I