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A comprehensive guide to resolve the `no-missing-end-of-source-newline` error in Stylelint while working with SCSS files.
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This video is based on the question https://stackoverflow.com/q/75346028/ asked by the user 'hasina rajik' ( https://stackoverflow.com/u/20973674/ ) and on the answer https://stackoverflow.com/a/75347638/ provided by the user 'jeddy3' ( https://stackoverflow.com/u/6368363/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Fix Unexpected Missing End-of-Source Newline Error in Stylelint

Introduction

If you are working with SCSS and using Stylelint for linting styles, you might come across an error message stating Unexpected missing end-of-source newline. This issue can be frustrating, especially if you're not sure where the problem lies or how to resolve it. In this guide, we’ll break down the cause of this error and provide a step-by-step guide on how to fix it effectively.

Understanding the Error

What Does the Error Mean?

The no-missing-end-of-source-newline is a rule in Stylelint that expects a newline character at the end of your SCSS file. If this newline is missing, the linter will throw a warning, as it indicates that your file doesn't conform to text file formatting standards.

Example of the Error

For instance, if your SCSS file looks like this:

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

You might receive an error similar to:

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

Fixing the Error

Step 1: Add a Newline at the End of the File

The simplest solution to fix the no-missing-end-of-source-newline error is to ensure that there is an additional newline character at the end of your SCSS file. Your updated SCSS file should appear like this:

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

Notice the newline after the last comment. Adding this line will resolve the error.

Step 2: Reviewing Your Stylelint Configuration

While fixing the newline issue, it’s also a good practice to review your Stylelint configuration for any other potential improvements. Ensure that you are extending Prettier's Stylelint configs last, and remember that including postcss-scss or stylelint-config-recommended-scss explicitly isn't necessary, as they are already part of stylelint-config-standard-scss.

Here’s an optimized configuration for your Stylelint setup:

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

Conclusion

Encountering issues with stylelint can be confusing, but understanding the error and knowing how to resolve it is key to maintaining clean and efficient SCSS code. By ensuring there is a newline at the end of your SCSS files and optimizing your Stylelint configuration, you can eliminate the annoying no-missing-end-of-source-newline warnings and keep your project on track.

Now, go ahead, make that adjustment, and happy coding!