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Why is crypto.subtle.digest async? (programming.dev)

submitted 5 months ago by [email protected] to c/[email protected]

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Why is crypto.subtle.digest designed to return a promise?

Every other system I've ever worked with has the signature hash(bytes) => bytes, yet whatever committee designed the Subtle Crypto API decided that the browser version should return a promise. Why? I've looked around but I've never found any discussion on the motivation behind that.

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[–] [email protected] 3 points 5 months ago* (last edited 5 months ago)

A constructor can't be async so now I need to restructure my code to use async factories instead of constructors

It sounds like you’re trying to do OOD/OOP. In js that’s usually not the way to go. You might want to restructure into a more functional architecture anyway.