How to Import JavaScript Files Correctly in Your Project

Learn how to properly import JavaScript files in your project and fix common errors like "Cannot use import statement outside a module."
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How to Import JavaScript Files Correctly in Your Project

When working with JavaScript, especially in a modern development environment that utilizes ES modules, you may encounter import-related issues. One common problem is the error message:

SyntaxError: Cannot use import statement outside a module.

For instance, you may have a state machine defined in one file but have trouble importing it into your main application file. In this post, we'll explore how to correctly import JavaScript files and resolve this common issue.

Understanding the Problem

MYSM.js

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However, when you try to run your application, you receive the error:

SyntaxError: Cannot use import statement outside a module.

Why Does This Error Occur?

This error arises because the import statement is being used in a script that is not recognized as a module. In JavaScript, not all scripts are treated the same; you need to explicitly specify that a script should be treated as a module.

The Solution

Step 1: Change the Script Type

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Step 2: Cleanup (Optional)

[[See Video to Reveal this Text or Code Snippet]]

This will help streamline your code and prevent unnecessary redundancy.

Conclusion

If you continue to have issues in the future, always double-check the script types and ensure your paths are correct!

Now you are ready to import and utilize your JavaScript files effectively!