Check for data.frame class in write_refs() too conservative? (rejects tibbles)

[LukasWallrich]

We are looking to use write_refs() in our ESHackathon/CiteSource package. For that, I was passing a tibble to write_refs and wondered why it fails - since it also has the data.frame class. This is because your check for classes depends on their precise position when there is more than one ... instead of

synthesisr/R/write_refs.R

Line 127 in c406bc9

if(!any(c("bibliography", "data.frame") == class(x))) {

it might be better to use

if (inherits(x, "data.frame") || inherits(x, "bibliography"))

That would allow tibbles and generally be more robust ...