ability to reference "dictionary" file from another script file

[usafphoenix]

So as far as i have been able to tell, each file in the scripts folder runs independently of each other, loading in alphabetical-sorted order, without any memory to a previous file declaring (using "val") a variable for all other scripts.
Is this correct?
Would love to be able to add an "include dictionary.zs;" line at the top of my scripts once i've spent the 8-10 hours writing out 600-1000 lines of simplified names for recipe changes in a pack.

Or, for whatever reason, must files be run independently of each other, and i have to copy all necessary declarations over to each file?

[usafphoenix]

(this is for a pack which makes recipe changes to pretty much all mods included, and uses it as well to introduce cross-compatibility / needing to progress in separate mods simultaneously)... i've already got the progression tree written out how i want it, just got to work on the code. if there's a way to reference a "dictionary" file (what i'm calling it. just a bunch of lines like:
val YelloriumIngot = BigReactors:BRIngot;
val MachineFrameResonant = ThermalExpansion:Frame:3;

but if five other mods need to reference these lines do i need to copy all necessary declarations to each script file separate?