🔗 A module for merging WeakSets and WeakMaps.

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

:gift: ES6 Map, Set, WeakMap and WeakSet polyfill in pure ES5

Playground for ECMAScript 2015 (ES6)

Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Different types of Associative Collections

Detect native WeakSet support.

[Node.js] Returns true if a value can be used as a WeakSet item or a WeakMap key.

keep comment(round-trip) when read & write jsonc/hjson, sdict with extra context(parent/keypath), weakList & OrderedWeakSet

JavaScript Next features and their demos

Weak data collections without the limitations

ES6 further learning

[Node.js] It’s like WeakSet but it supports non-objects.

All about Arrays[] and iterables in Javascript 🟡

The Weak library provides a Weak::Map class to store a key-value map and a Weak::Set class to store an unordered list of objects. The collection classes only hold weak references to all elements so they can be garbage-collected when there are no more references left.