crunch uses the jsonlite package for (de)serialization of
JSON. Unlike RJSONIO's toJSON, toJSON
does not allow for defining S4 methods for other object types. So,
crunch::toJSON wraps jsonprep, which exists to translate
objects to base R objects, which jsonlite::toJSON can handle.
jsonprep is defined as an S4 generic, and it is exported (unlike
codejsonlite::asJSON), so you can define methods for it if you have other
objects that you want to successfully serialize to JSON.
jsonprep(x, ...)
"jsonprep"(x, ...)
"jsonprep"(x, ...)
"jsonprep"(x, ...)
"jsonprep"(x, ...)
"jsonprep"(x, ...)
toJSON(x, ...)jsonprep returns a base R object that jsonlite::toJSON
can handle. toJSON returns the JSON-serialized character object.
toJSON