How to solve “Assign object to variable before exporting as module default” error?

Posted on by Nathaniel Kirk
Assign object to variable before exporting as module default

This article will show you how to fix the “Assign object to variable before exporting as module default” error. Read the article for more details on how to fix this error.

What causes the “Assign object to variable before exporting as module default” error?

This is a webpack warning when you run the program and discover that an object is exported by default but has not been assigned. Below will be an example of the “Assign object to variable before exporting as module default” error occurs.

Code:

const showMessage=()=>{
  console.log("Welcome to LearnShareIT");
}
export default {
    showMessage:showMessage
}

Output:

So when you encounter this error, what should you do to prevent it? See the next part to get the answer.

How to fix this error?

Assign object to variable before exporting

This way, we will correct what the error describes on how to fix it. Before exporting default, we will first assign the exported function to an object so webpack can recognize what we are exporting default for.

Code:

const showMessage=()=>{
  console.log("Welcome to LearnShareIT");
}
const functions = {
  showMessage
};
export default functions;

Output:

As you can see, we will create an object called functions that can hold all the functions we need to export by default. Then we will export that object, and in the parent component file, to import the object containing these functions, we need to access the functions from the parent object through the ‘.’ to get the inner function to look for.

Change rules of the project with eslintrc

ESLint is the best project tool and the most compatible one. It enables us to check the coding style, customize the configuration following our coding conventions, and identify bugs and other potential issues.

Even more so if we use ES2015 and JSX (React), ESLint is an excellent choice. It is currently the only linter supporting JSX and the best ES2015 JSX supporter.

Terminal:

npm install --save-dev eslint

After we have finished installing, you can access the eslintrc.json file to reconfigure the rules for a specific project. You will add rules for the project like the ones below.

Code:

"rules": { "import/no-anonymous-default-export": false }

After you make changes, close the program and rerun it to see the results. Warning no longer appears, and the program runs typically. I hope these methods will help you.

Summary

Through this article, you already know how to avoid the error “Assign object to variable before exporting as module default“. Still, assigning object to variable before exporting will help those who join the project later without having to learn more about a package. Let’s try it.

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