When do the React components rerender?

React components automatically re-render whenever there is a change in their state or props. State modification, passing props, using the Context API, passing references(array, function, and object) causes rerenders.

if the parent component has triggered a rerender all the child component will rerender too, it does not matter if the props are consumed, modified or not (at the child components), the child components will re-render if the parent component has triggered a render.

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