@kt3k/weak-value-map v0.1.2

Map compatible object, which stores the values by weak references

Install

npx jsr install @kt3k/weak-value-map

Or with Deno

deno add @kt3k/weak-value-map

Usage

import { WeakValueMap } from "@kt3k/weak-value-map"
import { assert, assertFalse } from "@std/assert"

const wvm = new WeakValueMap()

let myObject = {/* some large object */}

wvm.set(1, myObject)

assert(wvm.has(1))
assert(wvm.get(1) === myObject)

myObject = null // the object doesn't have reference anymore

// ... some time later

assertFalse(wvm.has(1))
assert(wvm.get(1) === undefined)

License

MIT