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Unexpected default export of anonymous function - How to fix? - LearnShareIT

Unexpected default export of anonymous function – How to fix?

Unexpected default export of anonymous function

This article will show you how to fix the “Unexpected default export of anonymous functionerror with two solutions: adding a name to the function method or assigning a name to the anonymous function.

Why does the error “Unexpected default export of anonymous function” happen?

Anonymous functions, also known as anonymous functions, are generated at runtime. Usually, when you declare a function, the compiler will save it in memory so you can call it above or below the function declaration location. Still, with anonymous functions, it will be generated when the compiler processes it to its location.

Anonymous functions are declared using operators instead of the standard function definition syntax.

Code:

var showGreeting = function()
{
    alert('Welcome to LearnShareIT');
};
 
showGreeting();

This error will appear when webpack compiles and detects that your anonymous function is not recognized. The error mainly appears when the program cannot find the component or function name assigned to the anonymous function.

Code:

import React from 'react';
export default function () {
  return (
  <>
  <h2>Unexpected default export of anonymous function | LearnShareIT</h2>
  <p>
  This anonymous function will be exported by default
  </p>
  </>
  );
}

Output:

So how can we fix this error? Let’s see how to do it below.

How to fix this error?

Adding a name to the function method

For webpack to recognize the anonymous function, in this case, we need to give this functional component a name so that it can be imported into the parent component through its name. That’s also why this warning appears. We need a name for the anonymous function to access it.

Code:

import React from 'react';
export default function App() {
  return (
  <>
  <h2>Unexpected default export of anonymous function | LearnShareIT</h2>
  <p>
  This anonymous function will be exported by default
  </p>
  </>
  );
}

This approach is a shorthand to default export a functional component. When you add App after the function, webpack usually compiles the project.

Assigning a name to the anonymous function

This way, we will use a more common way to add a name to a functional component, assigning a value that can be considered as the component’s name to the anonymous function and then exporting it by default.

Code:

import React from 'react';
 
const App = () => {
  return (
    <>
    <h2>Unexpected default export of anonymous function | LearnShareIT</h2>
    <p>
    This anonymous function will be exported by default
    </p>
    </>
    );
};
 
export default App;

This approach is a way of naming and exporting the component more explicitly than the first method. These two methods return the same results, so I wish you success with your code.

Summary

This article has shown you how to fix the “Unexpected default export of anonymous function” error. However, let’s assign a name to the anonymous function and then export it default separately. Because this way, it will be easier to update.

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