From what I understand I guess you just need to include 'use strict' in the file you wish to call.
in reply to Re: Can I force strictness on included files?
in thread Can I force strictness on included files?
Sure, but I want to avoid having to do this.
I like to update things in only one place, so instead of specifying use strict; in my about one hundred data files (I think I am actually in a similar situation than you describe), I would rather do that in the one place where all these other files are included in the main module.