Is this an error coming from sbt? If you used a .scala build file you wouldn’t encounter this error.

> If you want to return just 42 then you use JS("42").

Ok. I don’t really like the idea of having different syntaxes, like here:

```scala
"dir" -> j"${dir.value}",
"generateSourceMaps" -> JS(generateSourceMaps.value),
```

That’s too easy to write `j"${generateSourceMaps.value}"`, that would produce `JS("\"true\"")` instead of the expected `JS("true")`.

But that’s not an easy problem.