This VS Code extension integrates ESLint into the editor, providing real-time linting and auto-fixing for JavaScript, TypeScript, and other supported languages. It targets developers seeking to enforce code quality and style consistency directly within their workflow, improving code maintainability and reducing errors.

How It Works

The extension leverages the ESLint library installed in the workspace or globally. It communicates with ESLint via a Language Server Protocol (LSP) implementation, enabling efficient diagnostics and code actions. The extension supports both traditional .eslintrc.* configurations and the newer ESLint flat config files (eslint.config.js), offering flexibility in project setup.

Quick Start & Requirements

• Install via VS Code Extensions Marketplace.
• Requires Node.js and an ESLint installation (local or global).
• Official documentation: https://github.com/microsoft/vscode-eslint#readme

Highlighted Details

• Supports ESLint's new flat configuration files (eslint.config.js) with configurable behavior based on ESLint version.
• Integrates with VS Code's codeActionsOnSave for auto-fixing, allowing fine-grained control over which rules are applied.
• Offers extensive configuration options for working directories, rule severity customization, and validation behavior.
• Can be used as a formatter, with options to set it as the default for specific languages.

Maintenance & Community

• Actively maintained by Microsoft.
• Frequent releases with detailed changelogs.
• Community support via GitHub Issues.

Licensing & Compatibility

• MIT License.
• Compatible with commercial and closed-source projects.

Limitations & Caveats

The extension relies on the user's ESLint installation; issues with ESLint configuration or setup in the terminal may indicate problems that need to be resolved outside the extension. Some advanced features, like flat config support, require newer ESLint versions.