I'm trying to keep track of various variables in a big Lua code base, for logging and analytics purposes.
Ideally I want to create a register function that registers an existing global variable and keeps a reference to that variable (can be anything from numbers, booleans or other tables) in a table.
This table will then be used to loop on and output the values of the registered variables at certain points of the execution.
I won't have control over what type of variables are used, and cannot change how those variables are setup. So I don't have the option of changing those variables to tables and such.
What would be the best approach in Lua?