These questions are hard to discuss in the abstract. That Can Be Represented, but It Depends On What The Request Is.
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Sure. Broadly, my concern is that the approach you suggest will lead to lots of stateful effects living in the view model.
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Yes—in many ways, that’s the point.
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e.g. a presentation-oriented transformation of a model value to some view-appropriate value.
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Ours contain logic like that too. It’s unfortunate, but I rationalize it as:
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Consumers of the view model (views, basically) should be agnostic as to whether a particular transformation is stateful.
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I'm not worried about the transformations; I'm worried about the event handlers. :/
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Event handlers are just another form of input. View models transform all of these inputs into data for presentation.
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Sometimes they transform those inputs into data; sometimes they perform I/O.
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Everything Is A Signal™
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Replying to
I… okay. Presumably you are causing effects to happen at some point. How do you isolate those effects from the VM?