I have a range of cells in Excel. It's C3:E5. And I want to get all the values in that range, i.e: ["C3", "C4", "C5", "D3", "D4", "D5", "E3", "E4", "E5"]. I need it to work with absolutely any range, not just C3:E5. Cell addresses can be mixed in any order, it is not important. I need to do this specifically with JavaScript capabilities (or with some npm modules for node.js, if they are needed). What can you advise/suggest me?