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Anyone familiar with #SolidJS #signals able to help me understand why they don't leak memory? Why don't you need to unsubscribe?

AFAICT, each signal in the graph contains a list of all its reverse dependencies (all signals who depend on it). This feels circular to me and I don't see how the browser could clean up those references.

https://github.com/solidjs/solid/blob/40d6db6029efcb2e68d4df2b4cdf1b3644a771bb/packages/solid/src/reactive/signal.ts#L44

Is a mark-and-sweep GC strategy able to handle this or am I missing an implicit unsubscribe somewhere?