How to Disable TSLint/Eslint and Prettier for a Single Line

Learn how to efficiently apply both `tslint-disable` and `prettier-ignore` to a single line of code for optimal formatting with Visual Studio Code.
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How to Disable TSLint/Eslint and Prettier for a Single Line

If you're working with TypeScript and using formatting tools like TSLint or Prettier in your development environment, you might encounter a common issue: while aligning object properties for better readability, these tools can disrupt your formatting. This is particularly true when you want to ensure a clean alignment but find that Prettier automatically reformats your code, erasing the carefully laid-out whitespace.

In this guide, we will explore how to effectively silence both TSLint/Eslint and Prettier for a single line of code in your TypeScript files, allowing you to customize the formatting to your liking.

The Problem: Interference from TSLint and Prettier

Suppose you have an object that you want to format neatly:

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

You might wish to align the property keys for better readability, like so:

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

However, when you apply formatting, Prettier will typically reformat this code, and TSLint may remove the extra whitespace, reverting your object back to the unaligned state.

The Solution: Using Inline Comments

To achieve the formatting you desire while keeping TSLint and Prettier happy, you can use inline comments to disable both tools for that specific line. Here’s how you can do it:

Step-by-Step Instructions

Use Prettier Ignore: Start by using /* prettier-ignore */ to tell Prettier to skip formatting for the next line of code.

Disable TSLint: Add // tslint:disable typedef-whitespace immediately following the prettier-ignore comment to disable TSLint's enforcement of whitespace rules.

Write Your Code: Finally, write the line of code you wish to align.

Example Code

Putting it all together, your code should look like this:

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

Explanation of the Solution

*/ prettier-ignore */**: This comment prevents Prettier from formatting the line directly below it. This is crucial when you want a specific layout that doesn't conform to the default formatting.

// tslint:disable typedef-whitespace: This inline comment tells TSLint to ignore any warnings or errors related to whitespace on that specific line. This is helpful when your formatting clashes with TSLint's rules regarding horizontal whitespace.

By implementing these two comments correctly, you can enjoy a beautifully aligned object without the interference of formatting rules.

Conclusion

In summary, aligning properties in an object can often conflict with the automatic formatting provided by Prettier and TSLint. However, using inline comments to selectively disable these tools allows you to customize your code formatting precisely as you wish. The use of /* prettier-ignore */ and // tslint:disable facilitates a cleaner, more readable structure, enhancing both the appearance and maintainability of your code.

Now you can align your object properties in TypeScript without worries about automated formatting tools taking over!