React 18 TypeScript children FC

React 18 introduces a new feature called “children FC” which allows you to define the type of children in a functional component. This is particularly useful when working with TypeScript as it provides better type safety and helps catch potential errors early in the development process.

In previous versions of React, defining the type of children in a functional component was not straightforward. However, with the introduction of React 18, you can now use the “FC” type to specify the type of children that your component expects.

Let’s take a look at an example to understand how to use “children FC” in React 18 with TypeScript:

{`import React, { FC } from 'react';

type MyComponentProps = {
  children: FC<{ name: string }>;
};

const MyComponent: FC = ({ children }) => {
  return {children({ name: 'John' })};
};

const App: FC = () => {
  const ChildComponent: FC<{ name: string }> = ({ name }) => {
    return Hello, {name}!;
  };

  return (
    
      
        {ChildComponent}
      
    
  );
};

export default App;`}

In the above example, we have a component called “MyComponent” which expects a child component of type “FC” with a prop “name” of type string. Inside “MyComponent”, we render the child component and pass it the prop “name” with the value ‘John’.

In the “App” component, we define a child component called “ChildComponent” which accepts the prop “name” and renders a simple greeting message. We then use “MyComponent” and pass “ChildComponent” as its child component.

By using “children FC” in React 18 with TypeScript, we can ensure that the child component passed to “MyComponent” has the correct prop types and avoid potential errors. It provides better type safety and improves the overall development experience.

With this new feature, you can now easily define the type of children in functional components, making your code more readable, maintainable, and less prone to errors.

That’s it! You now know how to use “children FC” in React 18 with TypeScript. Happy coding!

React 18 TypeScript children FC