How to Make Visual Studio Code Display Misspelled React Components

Описание: Learn how to configure VSCode to highlight incorrect React component names with ESLint for a seamless development experience.
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This video is based on the question https://stackoverflow.com/q/67361673/ asked by the user 'mattsmith5' ( https://stackoverflow.com/u/15435022/ ) and on the answer https://stackoverflow.com/a/67425984/ provided by the user 'Ali Najafi' ( https://stackoverflow.com/u/5904730/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Make Visual Studio Code Display Misspelled React Components

If you're working with React and using Visual Studio Code (VSCode) as your Integrated Development Environment (IDE), you might encounter a frustrating scenario: you accidentally misspell a component name, and it's not clearly indicated in your code editor. This can lead to errors that are difficult to identify. Fortunately, there's a way to configure VSCode to display these kinds of errors more prominently, ensuring a smoother development experience. Let's dive into how you can tackle this issue.

The Problem

You created a component called WeatherApp, but mistakenly imported it as WeatherTest1234App. When running your application, the command prompt provides a compilation error, but your VSCode IDE does not underline the misspelled component name. How do you make sure this type of error is flagged visually within the IDE?

The Solution

To address this concern, you need to ensure that your ESLint configuration is properly set up in your project. ESLint is a tool that helps identify and fix problems in your JavaScript code, including React components. Here's how you can set it up to specifically highlight misspelled component names.

Step 1: Create/Modify the .eslintrc.js File

Open your project folder in VSCode.

Check if there’s already a file named .eslintrc.js in your project root. If it doesn't exist, you need to create one.

Here’s a recommended configuration for your .eslintrc.js file:

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

Breakdown of Configuration

env: This section specifies the environment in which your code is expected to run. Setting browser: true and es2021: true configures ESLint to understand modern JavaScript features.

extends: The configuration extends recommended settings from ESLint and React, which helps catch common problems.

parserOptions: This tells ESLint to recognize JSX, which is essential for React development.

plugins: Adding the react plugin enables React-specific linting rules.

rules: You can customize rules according to your preference. Here we’re turning off some rules that may not be necessary for all projects to avoid false positives.

Step 2: Install and Configure ESLint Extension in VSCode

Ensure you have the ESLint extension installed in VSCode. You can find it in the Extensions view (Ctrl + Shift + X).

After installation, reload your VSCode window, and ESLint will start working based on your configuration.

Step 3: Check for Errors in Your Code

Now, go back to your code where you have the misspelled component:

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

After setting up ESLint correctly, the misspelled WeatherTest1234App should now be flagged as an error, showing you a red underline right within the editor.

Conclusion

By following these steps, you can configure VSCode to visually flag misspelled React components, allowing you to catch these types of errors quickly. This not only enhances your development workflow but also reduces frustration during coding. Happy coding!