@ntvr/eslint-config

Netvor's shareable collection of configs for ESLint - Modern ESLint 9 Flat Config

Version 2.0.0 - Modern React Ready ✨

This package has been completely modernized for ESLint 9, removing all legacy ESLint 8 components and using the new flat config format throughout.

What's New

• ⚛️ React 19 Optimized: Full support for React 19 features and best practices
• 🚀 ESLint 9.39+: Full support for ESLint 9's flat config system
• 📦 Modern Plugins: All plugins updated to latest versions
• 🎯 TypeScript v8: @typescript-eslint v8.46+ with full compatibility
• 🔧 Zero Deprecated Rules: Removed all deprecated formatting and React rules
• ⚡ Zero Legacy: No more .eslintrc.js files - pure flat config
• 🎨 Optional Styling: Formatting rules available via @stylistic plugin

Installation

# NPM
npm install --save-dev @ntvr/eslint-config

# Yarn
yarn add --dev @ntvr/eslint-config

Usage

Modern Flat Config (Recommended)

Create eslint.config.js in your project root:

// eslint.config.js
const config = require('@ntvr/eslint-config');

module.exports = config;

Project-Specific Configurations

React Projects

// eslint.config.js
const config = require('@ntvr/eslint-config/react.js');

module.exports = config;

TypeScript Projects

// eslint.config.js
const config = require('@ntvr/eslint-config/typescript.js');

module.exports = config;

Next.js Projects

// eslint.config.js
const config = require('@ntvr/eslint-config/next.js');

module.exports = config;

JavaScript Only

// eslint.config.js
const config = require('@ntvr/eslint-config/javascript.js');

module.exports = config;

Optional Formatting Rules

ESLint 9 and @typescript-eslint v8+ removed formatting rules like indent, max-len, and member-delimiter-style. If you need them:

1. Install the stylistic plugin:

yarn add --dev @stylistic/eslint-plugin

2. Add to your config:

// eslint.config.js
const baseConfig = require('@ntvr/eslint-config');
const stylisticConfig = require('@ntvr/eslint-config/stylistic.js');

module.exports = [
  ...baseConfig,
  stylisticConfig,
];

Migration from v1.x

Breaking Changes

• ESLint 9 Required: Must upgrade to ESLint 9.39+
• Flat Config Only: No more .eslintrc.js support
• Updated Dependencies: All plugins updated to latest versions
• Removed Formatting Rules: Use @stylistic plugin if needed

Migration Steps

1. Update ESLint: yarn add --dev eslint@^9.39.0
2. Remove .eslintrc.js: Delete legacy config files
3. Create eslint.config.js: Use flat config format
4. Update Scripts: Ensure package.json uses ESLint 9 commands

Available Configurations

File	Purpose
eslint.config.js	Main flat config (React + TypeScript optional)
javascript.js	JavaScript-only projects
react.js	React projects
typescript.js	TypeScript projects
next.js	Next.js projects
stylistic.js	Optional formatting rules
index.js	Alias to main config

Requirements

• ESLint: ^9.39.0
• Node.js: ^18.18.0 || ^20.9.0 || >=21.1.0
• TypeScript: >=4.8.0 (optional)

Included Plugins

• @typescript-eslint/eslint-plugin@^8.46.0
• eslint-plugin-react@^7.37.0
• eslint-plugin-react-hooks@^5.0.0
• eslint-plugin-import@^2.32.0
• eslint-plugin-jsx-a11y@^6.10.0