Get first or all references of an R object
Assert that there are no references among the identified globals
find_references(x, first_only = FALSE)assert_no_references(x, action = c("error", "warning", "message",
"string"))
The R object to be checked.
If `TRUE`, only the first reference is returned, otherwise all references.
Type of action to take if a reference is found.
`find_references()` returns a list of one or more references identified.
If a reference is detected, an informative error, warning, message, or a character string is produced, otherwise `NULL` is returned invisibly.