That's actually exactly how the author (Gary Bernhardt) describes implementing Functional Core, Imperative Shell: > This is the cadence of the entire project s

That's actually exactly how the author (Gary Bernhardt) describes implementing Functional Core, Imperative Shell: > This is the cadence of the entire project so far. I tend to bloat up this outer file to something like 250 lines in some cases. Then I extract behavior out, moving it into unit-tested classes, figuring out how to make it more functional. Skip to about 11:40 in the video. (There is some additional explanation right before that.)