Basic Configuration

Core JavaScript/TypeScript linting configuration suitable for general projects. Provides comprehensive ESLint rules, TypeScript support, and Prettier integration without platform-specific customizations.

Capabilities

Universe Default Configuration

The main export providing basic JavaScript/TypeScript linting with Prettier integration.

// Traditional ESLint config (.eslintrc.js)
module.exports = {
  extends: ['universe']
};

// Package.json configuration
{
  "eslintConfig": {
    "extends": "universe"
  }
}

Configuration Details:

• Extends core JavaScript rules, TypeScript rules, and Prettier integration
• Supports ECMAScript 2022 features
• Includes Jest environment support
• Provides import/export linting with eslint-plugin-import
• Uses @typescript-eslint/parser for TypeScript files

Flat Configuration Default

ESLint 9+ flat configuration format for the basic preset.

// eslint.config.js
const { defineConfig } = require('eslint/config');
const config = require('eslint-config-universe/flat/default');
module.exports = defineConfig(config);

// Or with ES modules
import { defineConfig } from 'eslint/config';
import config from 'eslint-config-universe/flat/default';
export default defineConfig(config);

Usage Examples:

// Basic JavaScript project
// .eslintrc.js
module.exports = {
  extends: ['universe']
};

// TypeScript project with custom rules
// .eslintrc.js
module.exports = {
  extends: ['universe'],
  rules: {
    // Override specific rules as needed
    'no-console': 'error',
    'prefer-const': 'error'
  }
};

// Flat config for ESLint 9+
// eslint.config.js
const { defineConfig } = require('eslint/config');
const universeConfig = require('eslint-config-universe/flat/default');

module.exports = defineConfig([
  ...universeConfig,
  {
    rules: {
      // Additional custom rules
      'no-unused-vars': 'error'
    }
  }
]);

Included Rule Sets

Core JavaScript Rules

Comprehensive ESLint rules covering:

• Code quality (no-unused-vars, no-console, eqeqeq)
• Best practices (curly, prefer-const, no-var)
• Formatting (semi, comma-dangle, space-before-blocks)
• Error prevention (no-undef, no-unreachable, valid-typeof)

TypeScript Integration

• Uses @typescript-eslint/parser for TypeScript files (*.ts, *.tsx, *.d.ts)
• Includes @typescript-eslint plugin rules
• Provides type-aware import resolution
• Disables conflicting ESLint rules in favor of TypeScript equivalents

Import/Export Linting

• Validates import/export statements
• Enforces import ordering and grouping
• Resolves module paths correctly for both JavaScript and TypeScript
• Supports React Native module resolution patterns

Prettier Integration

• Extends eslint-config-prettier to disable conflicting formatting rules
• Includes eslint-plugin-prettier for formatting warnings
• Treats Prettier violations as warnings rather than errors

File Extensions

Supports all standard JavaScript and TypeScript file extensions:

• JavaScript: .js, .jsx
• TypeScript: .ts, .tsx, .d.ts

Environment Settings

• ECMAScript 2022 features enabled
• Jest testing environment support
• Node.js globals (console, module, require, etc.)
• Implied strict mode for all files