Feature request: utility to get position of slot element on page

[patmmccann]

Prebid.js/modules/undertoneBidAdapter.js

Line 57 in af742ce

function getBannerCoords(id) {

is a very expensive operation

Source: https://gist.github.com/paulirish/5d52fb081b3570c81e3a

I propose we add a linting rule to disallow. Undertone team, is this calculation important to you? Is there anotherv way to get it?

[dgirardi]

• Update percentInView to de-dupe multiple calls within an auction
• refactor adapters to use it
• add a linter rule to prevent use of getBoundingRect*