3 ms·
How? WeakMap (and WeakSet, more directly) can detect if an object has been collected only if you have a reference to pass to it. If you have reference to the
by recursive 3y ago
How? WeakMap (and WeakSet, more directly) can detect if an object has been collected only if you have a reference to pass to it. If you have reference to the object in a variable or data structure, it won't have been eligible for collection in the first place.