How do I programmatically create a DragEvent for Angular app and HTML?

To create a DragEvent, use the protractor API. The official documentation states:

The browser.get method loads a page. Protractor expects Angular to be present on a page,
so it will throw an error if the page it is attempting to load does not contain the
Angular library. (If you need to interact with a non-Angular page, you may access the
wrapped web driver instance directly with browser.driver).

Use the following pattern as well:

browser
.actions()
.dragAndDrop(myEle, {x:100,y:100})
.perform();