[relay-compiler] should formatGeneratedModule be publicly exported

[robrichard]

I have built my own version of relay-compiler by copying and modifying RelayCompilerBin to work around the limitations with using fragments from node_modules (see #1921).

As of relay-compiler@1.1.0 formatModule option is required for RelayFileWriter and the default is to pass in formatGeneratedModule. If the intention is to allow people to build their own customized relay-compiler, should formatGeneratedModule be exported in RelayCompilerPublic?

[zth]

I'm also very interested in this. Due to current limitations of IntelliJ I need to make Relay Compiler output the Flow types without wrapping them in comments. I guess this would help with that too?

[kassens]

@zth: Yes, you probably want to copy the code from formatGeneratedModule and make the change to the output.