Nodejs Module Exports Property Is Not A Function

Are you facing issues with the 'module.exports' property in Node.js not working as expected? You're not alone! Many developers encounter this problem when trying to export functions from a module in Node.js. In this article, we'll dive into the common scenarios where you might see the error "TypeError: module.exports is not a function" and provide solutions to help you resolve this issue.

### What Causes This Error?

The error message "TypeError: module.exports is not a function" typically occurs when you mistakenly try to use 'module.exports' as a function instead of an object in your Node.js code. Remember, the 'module.exports' object is used to define what a module exports, and it should be an object that can contain functions, variables, or classes.

### Solutions to Fix This Error

1. **Check Your Syntax**: Ensure that you are setting the 'module.exports' property correctly. It should be assigned to an object that contains the methods or properties you want to export from your module.

2. **Use Named Exports**: Instead of trying to export a function directly, consider using named exports. You can define your functions within an object and export that object using 'module.exports'.

// Example of using named exports
    module.exports = {
        myFunction: function() {
            // Your function logic here
        }
    };

3. **Verify Function Calls**: Double-check the way you are importing and using the exported functions in your main application file. Ensure you are calling the functions correctly with the appropriate syntax.

4. **Avoid Reassigning 'module.exports'**: Be mindful of reassigning 'module.exports' in different sections of your code. Make sure you only assign values to 'module.exports' once and avoid reassigning it elsewhere in the same file.

### Example Code Snippet

Here's an example to illustrate how to correctly export a function using the 'module.exports' object:

// myModule.js
    function myFunction() {
        console.log("Hello, Node.js!");
    }

    module.exports = myFunction;

// app.js
    const myFunction = require('./myModule');

    myFunction(); // Output: Hello, Node.js!

### Conclusion

By adhering to the correct usage of 'module.exports' as an object in your Node.js applications, you can avoid encountering the "TypeError: module.exports is not a function" error. Remember to structure your code appropriately, use named exports when necessary, and ensure consistency in exporting and importing functions across your modules. With these tips and best practices, you'll be able to resolve this error swiftly and continue building great Node.js applications with ease. Happy coding!