How to fix Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null. in React

// ❌ WRONG - No return statement
class MyComponent extends React.Component {
  render() {
    <div>Hello World</div>
  }
}

// ✅ CORRECT - Explicit return
class MyComponent extends React.Component {
  render() {
    return <div>Hello World</div>;
  }
}

// ✅ CORRECT - Return null if intentionally rendering nothing
class MyComponent extends React.Component {
  render() {
    if (!this.props.show) {
      return null;
    }
    return <div>Hello World</div>;
  }
}

// ❌ WRONG - Curly braces without return
const MyComponent = () => {
  <div>Hello World</div>
};

// ✅ CORRECT - Implicit return with parentheses
const MyComponent = () => (
  <div>Hello World</div>
);

// ✅ CORRECT - Explicit return with curly braces
const MyComponent = () => {
  return <div>Hello World</div>;
};

// ✅ CORRECT - Single line implicit return
const MyComponent = () => <div>Hello World</div>;

// ❌ WRONG - JavaScript inserts semicolon after return
function MyComponent() {
  return
    <div>Hello World</div>;
}
// This becomes: return; <div>Hello World</div>;

// ✅ CORRECT - Opening tag on same line
function MyComponent() {
  return <div>
    Hello World
  </div>;
}

// ✅ CORRECT - Opening parenthesis on same line
function MyComponent() {
  return (
    <div>
      Hello World
    </div>
  );
}

// ❌ WRONG - Some paths don't return anything
function MyComponent({ isLoggedIn }) {
  if (isLoggedIn) {
    return <div>Welcome back!</div>;
  }
  // Missing return for false case
}

// ✅ CORRECT - All paths return
function MyComponent({ isLoggedIn }) {
  if (isLoggedIn) {
    return <div>Welcome back!</div>;
  }
  return <div>Please log in</div>;
}

// ✅ CORRECT - Ternary operator ensures return
function MyComponent({ isLoggedIn }) {
  return isLoggedIn ? (
    <div>Welcome back!</div>
  ) : (
    <div>Please log in</div>
  );
}

// ❌ WRONG - Variable declaration doesn't return anything
const MyComponent = () => {
  const element = <div>Hello</div>;
};

// ✅ CORRECT - Return the variable
const MyComponent = () => {
  const element = <div>Hello</div>;
  return element;
};

// ✅ CORRECT - Return JSX directly
const MyComponent = () => {
  return <div>Hello</div>;
};