Cloning & Injecting Props with cloneElement

In this lesson you will use React.cloneElement to clone a child element and inject extra props from the parent, without the child needing to know about them.

`React.cloneElement(element, props, ...children)` creates a new React element based on an existing one, merging the new props with the original props. The original element's type is preserved.

const clone = React.cloneElement(child, { active: true });