When you need a server that only needs an endpoint and returns a single object.

Example

const justsayit = require('justsayit')
 
justsayit(1522, req => {
    return {'hello', 'world'}
})

That's it. 1522 is the port, and the {'hello': 'world'} the JSON response.

You can also return a string in the callback instead of an object.