eslintrecommended

eslintrecommended is a built-in shareable configuration in ESLint that enables a curated subset of core rules considered essential for catching common errors in JavaScript code. It is not the complete rule set, but a pragmatic baseline designed to prevent frequent mistakes and potential runtime issues.

When you extend eslint:recommended in your ESLint configuration, ESLint activates the selected rules at error level by default. The exact set of rules is maintained by the ESLint core team and can change across versions as the project evolves. This baseline focuses on rules that address common problems such as undefined variables, unused variables, and other potential defects, while avoiding overly opinionated stylistic choices.

Usage typically involves adding a line like extends: ["eslint:recommended"] to a configuration file such as .eslintrc.json or .eslintrc.js. Projects can customize behavior by overriding individual rules in the rules section, turning rules off or adjusting their severity to fit local conventions.

Relationship to other configurations: eslintrecommended serves as a starting point for a JavaScript project and is often combined with other presets or plugins (for example, plugin rules for React or TypeScript). It is intended to complement, not replace, project-specific style guides and additional tooling.

Limitations and considerations: Because it emphasizes correctness over style, some teams may find certain rules too strict or not aligned with their coding practices. Teams commonly extend eslint:recommended with additional rules or configurations to reflect their workflow and technology stack.