lwc-linter/.eslintrc.js

A comprehensive CLI tool for linting Lightning Web Components v8.0.0+ with modern LWC patterns, decorators, lifecycle hooks, and Salesforce platform integration

module.exports = {
  root: true,
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 2022,
    sourceType: 'module',
    project: './tsconfig.json',
  },
  plugins: ['prettier'],
  extends: [
    'eslint:recommended',
    'prettier',
  ],
  rules: {
    // Prettier integration
    'prettier/prettier': 'error',
    
    // TypeScript specific rules (simplified for publishing)
    'no-unused-vars': 'error',
    
    // General ESLint rules
    'no-console': 'warn',
    'no-debugger': 'error',
    'no-alert': 'error',
    'no-eval': 'error',
    'no-implied-eval': 'error',
    'no-var': 'error',
    'prefer-const': 'error',
    'eqeqeq': 'error',
    'curly': 'error',
    'no-multi-spaces': 'error',
    'no-trailing-spaces': 'error',
    'no-multiple-empty-lines': ['error', { max: 2, maxEOF: 1 }],
    'comma-dangle': ['error', 'always-multiline'],
    'semi': ['error', 'always'],
    'quotes': ['error', 'single', { avoidEscape: true }],
    
    // Code quality rules
    'complexity': ['warn', { max: 10 }],
    'max-depth': ['warn', { max: 4 }],
    'max-lines-per-function': ['warn', { max: 50, skipBlankLines: true, skipComments: true }],
    'max-params': ['warn', { max: 4 }],
    'no-magic-numbers': ['warn', { ignore: [0, 1, -1], ignoreArrayIndexes: true }],
    
    // Import rules
    'sort-imports': ['error', { ignoreDeclarationSort: true }],
  },
  env: {
    node: true,
    es2022: true,
    jest: true,
  },
  ignorePatterns: ['lib/', 'node_modules/', '*.js', '!.eslintrc.js'],
};