Embed a very minimal express server in the current folder.
You started a little front-end project by creating a folder and putting files in it... then you thought "It would be handy to have a little web server here, to service ajax requests." At this point, your fingers fly to the console:
npx embed-express
Voila!
Start in a folder that needs an express.
By default, the express server runs on port 3001. You can override that by setting the PORT evironment variable.