The packages currently published by this project are summarized below, with brief examples and install instructions.

All of our packages are published to JSR, a modern TypeScript-first registry with a focus on security, performance, and compatibility. Packages are published on JSR under the @iter/* scope, and mirrored on NPM for convenience under the @itter/* organization.

This package provides an IterableWeakMap class that can be used as a drop-in replacement for the standard WeakMap class. With an iterable API that implements both the standard Map and WeakMap interfaces, it provides a familiar surface area that can be used in place of either of its native counterparts.

deno add jsr:@iter/weak-map

npx jsr add @iter/weak-map

npm install @itter/weak-map

import { IterableWeakMap } from "@iter/weak-map";

// drop-in replacement for WeakMap
const weakMap = new IterableWeakMap([
  [{ key: 42 }, "Hello, World!"],
  [{ key: 41 }, "Goodbye, World!"],
]);

// but with an iterable API similar to Map
for (const [key, value] of weakMap) {
  console.log(key, value);
}

// and all the methods you'd expect from a Map
weakMap.set({ key: 43 }, "How do we get the key with no reference?");

const likeThis = [...weakMap.keys()].pop();