local main = {} function main.build(event) if event.entity.type ~= 'logistic-container' or event.entity.logistic_mode ~= 'storage' then return end local inventory = event.entity.get_inventory(defines.inventory.chest) if not inventory then return end local contents = inventory.get_contents() if not contents or #contents ~= 1 then return end event.entity.storage_filter = {name = contents[1].name, quality = contents[1].quality} end return main