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.
Sounds like an architectural issue to begin with. A constructor shouldn’t do the heavy lifting to begin with.
You consider calculating the hash of a few bytes to be heavy lifting?
The API doesn’t restrict the amount of bytes to be hashed. So yeah it’s still heavy lifting.
Trigger a loading event after the constructor is finished that the view model takes to calculate your hash.