feat: callback garbage collection #71
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This PR solves the known limitation of storing references to callback functions indefinitely.
Thanks to
WeakRefandFinalizationRegistrywe are now able to tell when the parent no longer references a callback provided by the child, making it possible to remove the reference on the child side (and vice versa for callbacks provided by the parent to the child).Changes the minimum required node version to
14.6.0, and target toes2021.Still a draft because the following are missing: