Some libraries require building the code, some don't. From the list that you had, none of them require it technically. They can all work by simply including the js file in a
tag. However, there are many frameworks/libraries (such as sass or coffeescript) which do require a build tool, because the source code must be compiled to become html/javascript/css as understood by the browser.
Also, there's not really any reason to be so against using build tools. As you said, they can run automatically on file change, so they're really just in the background.