Compile sass and host using one npm script?

I have node-sass installed in my package.json, and I currently have two scripts in my package.json, one to compile my sass into css, and another to localhost it, like this:

"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "http-server",
    "scss": "node-sass --watch scss -o css"
  }

Both commands work but obviously it’d be nice if I could use one command to host and watch the files, so that I can edit as I host it.
I feel like this should be simple but am not sure about the best way to go about it. Any help would be greatly appreciated!