Summary:
I've talked to several major community users, and they're all ok with deleting this
code. There's several doc fixes which will make it easier for third
party developers which should land about the same time this will.
Also buried along with it is RCTJSCExecutor.
Reviewed By: javache
Differential Revision: D6880781
fbshipit-source-id: b4cb1143def6fd23a96290e478fa728adbedacd3
Summary:
Since we are reading from a file, we should make sure this struct is packed, just in case we change it down the line and the compiler decides it might want to introduce padding, we're now protected against that.
There was also a discussion about the fact that people might use `ptr += sizeof(BundleHeader)` as an idiom in their code, which would currently be incorrect, if padding was introduced at the end of the file. Actually, it remains incorrect to do that now, because a RAM bundle header is a different size to a BC Bundle header. If people are properly testing their code, they should spot this pretty quickly, because it will always be an incorrect thing to do with a RAM bundle, so this isn't as bad as previously thought: where the code only succeeds when the compiler deigns to not pad the struct at the end.
This diff also cleans up how headers are initialised. `BundleHeader` has a constructor that explicitly zero-initialises it so we can rely on the default initializer to do the right thing now.
Reviewed By: mhorowitz
Differential Revision: D4572032
fbshipit-source-id: 7dc50cfa9438dfdfb9f842dc39d8f15334813c63