Hide runtime values during planning!

[benjie]

User wrote this planning code:

holidayparkOperatorPackagesById(_query, args: OperatorPackageByIdFieldArgs) {
                    const { $ID } = args;

                    const relayId = Buffer.from($ID.value, 'base64').toString('utf8');
                    const parts = JSON.parse(relayId);
                    const parkOperatorId = parts[1];

                    console.log(parkOperatorId);

                    const $holidaypark_operator_packages = holidaypark_operator_package.find({
                        park_operator_id: parkOperatorId,
                    });
                    return connection($holidaypark_operator_packages);
                },

this caused issues because they're reading the raw value from $ID which represents the value that it had at planning time, and not necessarily the value it will have a future runtimes.

We should make sure things like value here are hidden away, perhaps using symbols, or private properties, such that users cannot accidentally read these values when planning and think they know what to do.