Vscode Eslint does not highlight errors

Learn how to set up Vscode ESLint to detect errors with an example. Fix common mistakes and improve code quality.

Vscode Eslint Does Not Highlight Errors

VSCode is an open-source, cross-platform code editor developed by Microsoft. It is one of the most popular code editors available, and it provides support for many languages and tools. One of the features of VSCode is its support for linting, which can help developers to identify and fix coding errors quickly.

However, it is possible that VSCode Eslint may not be highlighting errors as expected. This could be due to a variety of reasons, including incorrect configurations, incorrect versions of the linter, or simply that the linter is not installed. In order to troubleshoot this issue, it is important to first identify the source of the problem.

Troubleshooting VSCode Eslint Issue

In order to troubleshoot the issue, it is important to first check that Eslint is installed and configured correctly. To do this, open the user settings by clicking on the gear icon in the bottom left corner of the VSCode window. In the settings window, search for "eslint" and make sure that it is enabled. If it is not enabled, you can enable it by clicking the checkbox next to it.

Once Eslint is enabled, you need to make sure that the correct version of the linter is installed. To do this, open the command palette (Ctrl + Shift + P) and type in "eslint: install" in the command palette. This will install the latest version of Eslint, and you can then check that it is working correctly by running the command "eslint: lint" in the command palette. This should identify any errors in the code.

If the issue still persists, you can try using a different linter. For example, if you are using JavaScript, you can try using the popular JSHint linter. To install JSHint, open the command palette (Ctrl + Shift + P) and type in "jshint: install". This will install the latest version of the linter, and you can then run it by typing "jshint: lint" in the command palette.

Once you have identified the source of the issue, you can then try to fix it. For example, if the issue is due to incorrect configurations, you can try changing the settings to match the recommended configuration. If the issue is due to incorrect versions of the linter, you can try updating the version to the latest version. If the issue is due to the linter not being installed, you can try installing the linter and then running it.

// Example of an issue that may be highlighted by linting
function addNumbers(num1, num2) {
  return num1 + num2;
}

// This should return the sum, but instead it returns a string
const result = addNumbers("1", "2");
console.log(result); // "12"

By troubleshooting and fixing the issue, you can ensure that VSCode Eslint is highlighting errors correctly. This can help to make your code more efficient and easier to maintain, as well as helping to identify and fix errors quickly.