While reviewing @poteto's PR I noticed that there were some cases of missing
dependencies. I tracked it down to a bug I introduced
[here](https://github.com/facebook/react-forget/commit/5b827eb85ce0b09a72e620449d1d676071c2e0b9#r100646304).
Decl.id is meant to be the id of the instruction that declares the variable. We
then test to see if a dependency is later than that. If the Decl.id is
incorrectly too high, then we miss some dependencies thinking they aren't
defined yet.