visual_viewport library Null safety

Visual Viewport API

https://wicg.github.io/visual-viewport/

Classes

VisualViewport
Experimental This is an experimental technologyCheck the Browser compatibility table carefully before using this in production. The interface of the Visual Viewport API represents the visual viewport for a given window. For a page containing iframes, each iframe, as well as the containing page, will have a unique window object. Each window on a page will have a unique representing the properties associated with that window. [...]