Primary advantage (to me at least) over other frameworks and server-side platforms is that it's asyncronous by design versus something tacked on or optional tha

Primary advantage (to me at least) over other frameworks and server-side platforms is that it's asyncronous by design versus something tacked on or optional that you decide to use later (which could be problematic if you have a lot of highly coupled code that blocks [or worse, you aren't aware that it does]). If you're considering doing something that requires a lot of asyncronous processing, it's a good choice to avoid potential headaches that can arise if you're not careful when using some alternatives. TypeScript also works well with Node.js if you want something more strongly typed (and with classes) on the server side and still have the advantages that Node brings.