Exceptions are not thrown

[foxx]

Exceptions don't appear to be re-thrown inside map() calls;

        return Lazy.range(400).map(function(i) {
          throw new Error("Test");
        })

It doesn't make any difference if I use join either;

        var v = Lazy.range(400).map(function(i) {
          throw new Error("LOL");
        }).join(function(xs) {
          console.log(xs);
        });