To check the type of a React component,. we can use the type property.

For instance, we write

import MyComponent from "./MyComponent";

//...

this.props.children.forEach((child) => {
  if (child.type === MyComponent) {
    console.log("This child is <MyComponent />");
  }
});

to check the type property of each child in the children prop to see if it’s MyComponent.

If it is, then the child is a MyComponent instance.