The first problem is easily avoided with a few style guidelines. If a feature exists it doesn't mean it must be used. You can configure CoffeeLint to avoid conf

The first problem is easily avoided with a few style guidelines. If a feature exists it doesn't mean it must be used. You can configure CoffeeLint to avoid confusing constructs. The second problem didn't turn out to be as big as I thought. I was bitten by it about a couple times a year, and every time it was symptom of too long functions or too many closure nesting. Transpiling and source maps are not a problem. Small changes in my code takes 200 ms to recompile with source maps, with webpack in watch mode (projects are ~20k lines). And when I start a new project I just copy the webpack config from the previous one (with cli switches for several features).