travisennis/rhino — comment on commit 00a8caa54f33932d305ce9a066aae5d6790c5ee7
File:  line 0
By anba:

That's expected, because it's the same as `+ ""`. The initial `{}` just start an empty block. With parens you'd get the expected result:

> js> ({} + "")
> "[object Object]"