GHCJS benchmarks / support

[tysonzero]

One very useful application of these serialization libraries is to send data between Haskell servers and Haskell/GHCJS browser clients. It would be nice to see how they perform in GHCJS / whether or not they work.

I'm assuming that Multi-Language should be safe, and Haskell should be fairly safe, but Haskell-Same-Architecture clearly not.

Besides this issue flat seems to work ok in GHCJS for example.

[tittoassini]

I had a quick look, but it seems quite difficult to compile the benchmark and all the serialisation libraries under ghcjs.