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A common pattern is to alias a class’ prototype to fn, which is less verbose.
Where did the object.prototype===object.fn convention originate in JavaScript?
I see many libraries using it.
Just curious.
I believe this practice comes from original jQuery code where author wanted to shield developers from complexity (or natural beauty) of JavaScript native feature – prototypes.
Another potential reason could be the need to remove possible connotation [with existing PrototypeJS library] of the internal jQuery library prototype aspect.