Depends on your definition of "using" JavaScript. The main difference between common TypeScript and TS-based JSDoc is the need for an additional build step. Being able to ftp-upload your `.js` files and then be done with it is a remarkable advantage over Vite/Webpack/whatever in small to medium-sized projects. If editor based type support is sufficient to you (i.e. no headless checks), you won't need to install any TS packages at all, either. tsserver is still used in the background, but so are thousands of other binaries that keep your editor, OS and computer running, so I don't see that as an argument.