Move {jsonlite} to suggested dependency #213
Merged
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This PR moves {jsonlite} from an imported dependency to a suggested dependency as it is only used within an internal function (
.read_epidist_db()
).A new check is added within
.read_epidist_db()
to error with an informative message if {jsonlite} is not installed. Tests are added to mock the behaviour of {jsonlite} not being installed and to test.is_pkg_installed()
. The mock testing follows the {cfr} package.The design principles vignette is updated to address changes to {jsonlite} dependency.