Function FLValue_ToJSON5 

pub unsafe extern "C" fn FLValue_ToJSON5(
    arg1: FLValue,
) -> FLStringResult

Encodes a Fleece value as JSON5, a more lenient variant of JSON that allows dictionary keys to be unquoted if they’re alphanumeric. This tends to be more readable. @note Any Data values will be encoded as base64-encoded strings.