Render React components in placeholders that are placed somewhere else in the component tree. There is a common use case in React apps where you want to define a Layout where the content of some elements is defined by children components. For example, you want to define Layout just once and reuse it for every page but it has a breadcrumb whose steps depend on children components. This tiny library allows you to define tunnels to render from an element to whatever another element in the App, even elements located on top of the tree. It's like Portal but the target is a component instead of a DOM element.