Unexported prior functions causing CRAN check note

[bking124]

Thanks for the great package! I am trying to use dbarts (specifically the dbarts function) in a package I am developing and would like to submit on CRAN. In one of my functions I have a line of code:

sampler = dbarts(y ~ X, test = X_test,
                   control = control,
                   tree.prior = cgm(power, base),
                   node.prior = normal(k),
                   resid.prior = chisq(sigdf, sigquant),
                   sigma = sigest)

However, I get a note from the CRAN check saying

no visible global function definition for 'cgm'

and similarly for normal and chisq, as these functions are not exported by dbarts. Do you know of any way to resolve this note? For the future, would you be open to exporting these functions (perhaps in much the same way as rstanarm exports their priors) so that others won't encounter such an issue?

I know that a note won't necessarily make or break CRAN acceptance, but it's always nice to be able to clear as many as possible so that less review is needed.

[bking124]

As a follow-up, I was able to suppress this note with
if(getRversion() >= "2.15.1") utils::globalVariables(c("cgm", "normal", "chisq"))
but I still think exporting the priors would be a good thing to do.