is-weakref
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
is-finalizationregistry
Is this value a JS FinalizationRegistry? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
weakref
Extend built-in collections with weak references for efficient garbage collection and optimal performance in memory-intensive applications with IterableWeakSet, IterableWeakMap, and WeakValueMap.
value-object-cache
A value object cache that can be used to make value objects behave like primitive types, i.e. if two variables `a` and `b` point to instances of the same class and have the same value, then `a === b`, otherwise `a !== b`.
