IterableWeakSet, IterableWeakMap, and WeakValueMap provide iterable weak collections whose entries disappear automatically when their objects are garbage collected—perfect for caches and registries in any JavaScript runtime.

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

Socket.dev optimized package override for is-weakref

Iterable WeakSet / WeakMap using ES2021 WeakRef

WeakRef and FinalizationGroup for IE11+

WeakRef sham that uses the global WeakRef if it exists.

FrailMap is an extension of WeakMap that supports primitive values using WeakRef.

Parent/child abort tree with WeakRef cascade for cooperative cancellation

Iterable weak sets and maps, plus a weak-value map, with finalization receipts and no dead WeakRef shells.

WeakStorage and WeakRefMap are based on WeakRef objects allowing to store values as weak references.

weak decorator, wraps it with a WeakRef descriptor

A GC-aware cache using WeakRef and FinalizationRegistry

Returns the same unique WeakRef instance per object.

A WeakRef-based cache that automatically evicts entries when values are garbage collected

A simple WeakRef implementation/polyfill based on N-API

A simple WeakRef implementation/polyfill based on N-API

Stop hunting memory leaks with heap snapshots. This babel plugin tags every React component and hook with a uniquely-named marker, then a runtime tracker uses WeakRef + FinalizationRegistry to warn you, live in the console, the moment something leaks.

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WeakRefMap using WeakRef

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