As const is there to save your bacon and if you have maybe Records that can be typed but You might not know essentially what's going to be in them now. So I think these are great great things to have in your back pocket when you need them But you might not always need them. Oh one more thing: Like freezing an object with as cons making it read only. As all TypeScript It's lost that compile time. It's stripped so there is nothing to stop that object from being overwritten in the browser, but the compiler will complain about it. If for some reason like your third-party library or something like that where someone isn't using TypeScript then you should still