Where does `new Directory` comes from?

[luiscarlosjayk]

Hi there,

just wondering where does the new Directory call comes from in the guideline.

const directory = new Directory(this, 'directory', {
    baseDir: dir
});

Like, is it from nodejs packages or an npm package, or else?

Asking because I would like too to get a digest to avoid building and deploying a function that hasn't changed since last time, and only build and deploy the handlers that changed, same for the lambda layer.

Thanks