Allow Hash object reuse

What is the problem this feature will solve?

https://github.com/nodejs/node/issues/25857#issuecomment-466384613

I'm creating the hash of many small objects and need to keep track of these individual hashes so https://github.com/nodejs/node/issues/29903 doesn't work.

My specific use case is that I'm hashing directory layouts to setup a file layout that's optimal about symlinking entire directories when its filled with symlinked entries that all point to the same source directory. I can get into specifics if that matters.

What is the feature you are proposing to solve the problem?

crypto.Hash.reset() - reset the internal state of the hasher and allows it to be reused with any new allocations

What alternatives have you considered?

-not use crypto.hash in this case and write my own hasher
-create a native add on that lets me manage to hash context according to my needs

Aucun fichier d’implémentation ni test n’est identifié dans l’issue. Commencez par lire les deux discussions Node.js liées ainsi que le contexte existant de l’API crypto.Hash ; le travail sera terminé lorsqu’une opération de réinitialisation permettra de réutiliser un objet Hash pour de nouvelles allocations tout en conservant des résultats de hachage distincts.