Advanced TypeScript Programming Projects

Previewing files using a service

One of the challenges of developing UI applications is that there is a tendency for logic to creep into views that does not belong there. It becomes convenient to put a piece of logic in our ts views file because we know that the view is going to call out to it, but it does something that does not have any visible impact on the client.

We might, for instance, want to write some values from the UI back to the server. The only part of this that is relevant to the view is the data part; the actual writing to the server is a completely different responsibility. It would be useful to us if we had a simple way to create external classes that we could inject wherever we needed so that we would not need to worry about ...