To pass a single TypeScript interface object as props to a child component in React, follow these steps:
1. Define the Interface:
// types.ts
export interface User {
  name: string;
  age: number;
  email: string;
}
2. Parent Component:
// ParentComponent.tsx
import React from 'react';
import { User } from './types';
import ChildComponent from './ChildComponent';
const ParentComponent: React.FC = () => {
  const user: User = {
    name: 'John Doe',
    age: 30,
    email: 'john.doe@example.com',
  };
  return <ChildComponent user={user} />;
};
export default ParentComponent;
3. Child Component:
// ChildComponent.tsx
import React from 'react';
import { User } from './types';
interface ChildComponentProps {
  user: User;
}
const ChildComponent: React.FC<ChildComponentProps> = ({ user }) => {
  return (
    <div>
      <h1>{user.name}</h1>
      <p>Age: {user.age}</p>
      <p>Email: {user.email}</p>
    </div>
  );
};
export default ChildComponent;