Metronic 8 - Webpack.config - Deleting of assets

In the webpack.config there is this method below that takes care of deleting the assets but I am not sure why it is restricted by that if condition. I mean if I run 'npm run build' I expect that the dist/asstets folder will be totally deleted first and then redone so if for instance I had some images in the src/media folder that I have removed then they will also be removed from the dist/assets folder and not stay there which can cause false impressions.

To make matter worse when I ran: 'npm run localhost', that if condition still wasn't hit.


function removeExistingAssets() {
if (typeof args.localhost !== 'undefined') {
del(distPath, {force: true});
}
}