React.Children Utilities
Use React.Children.map, count, and toArray to manipulate children safely.
Welcome
In this lesson you will use the React.Children utilities — map, count, toArray, and forEach — to safely iterate and transform children regardless of how many are passed.
The Problem with Direct Array Methods
Because `props.children` can be a single element, an array, or undefined, calling `.map()` directly on it will crash. React.Children utilities handle all these cases safely.
// Unsafe — crashes if children is a single element
children.map(c => ...);
// Safe
React.Children.map(children, c => ...);