viewportH returns document height, not viewport height.

[ericandrewlewis]

viewportH more or less defaults to returning document element's height, which doesn't describe the "viewport" height. Shouldn't we always refer to window.innerHeight?

[ryanve]

Thanks for checking @ericandrewlewis. By design verge.viewportH() gets the CSS @media (height) because that seems like the most useful value. Please report if different. window.innerHeight is inaccurate sometimes.

In that code docElem is the document.documentElement or falsey. The typechecks prevent throwing errors in environments like node where window and document are undefined.