eslint.config.js

const jsonPlugin = require('eslint-plugin-json')
const stylistic = require('@stylistic/eslint-plugin')

/** @type {import('eslint').Linter.Config} */
module.exports = {
  languageOptions: {
    parserOptions: {
      ecmaVersion: 2020,
      sourceType: 'module'
    }
  },
  plugins: {
    '@stylistic': stylistic,
    json: jsonPlugin
  },
  rules: {
    '@/no-console': ['error', { allow: ['warn', 'error'] }],
    '@/no-debugger': 'error',
    '@/no-var': 'error',
    '@/prefer-const': 'error',
    curly: 'error',
    eqeqeq: ['error', 'always'],
    '@/no-duplicate-imports': 'error',
    quotes: ['error', 'double'],
    semi: ['error', 'always'],
    '@/comma-dangle': ['error', 'always-multiline'],
    '@/object-curly-spacing': ['error', 'always'],
    '@/no-trailing-spaces': 'error',
    '@/array-bracket-spacing': ['error', 'never'],
    '@/arrow-parens': ['error', 'as-needed'],
    '@/space-before-function-paren': ['error', 'never'],
    indent: ['error', 2],
    '@/linebreak-style': ['error', 'unix'],
    '@/max-len': ['error', { code: 128 }],
    '@/max-classes-per-file': ['error', 1],
    '@/no-irregular-whitespace': 'error',
    '@/lines-between-class-members': ['error'],
    '@/no-duplicate-imports': 'error'
  }
}