.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    'jest/globals': true,
  },
  extends: ['airbnb-base', 'prettier'],
  parserOptions: {
    ecmaVersion: 'latest',
    sourceType: 'module',
  },
  rules: {
    'class-methods-use-this': 'off',
    'no-plusplus': ['error', { allowForLoopAfterthoughts: true }],
    'no-param-reassign': ['error', { props: false }],
    'prefer-destructuring': ['error', { object: true, array: false }],
    'no-restricted-syntax': [
      'error',
      {
        selector: 'ForInStatement',
        message:
          'for..in loops iterate over the entire prototype chain, which is virtually never what you want. Use Object.{keys,values,entries}, and iterate over the resulting array.',
      },
      {
        selector: 'LabeledStatement',
        message:
          'Labels are a form of GOTO; using them makes code confusing and hard to maintain and understand.',
      },
      {
        selector: 'WithStatement',
        message:
          '`with` is disallowed in strict mode because it makes code impossible to predict and optimize.',
      },
    ],
    'no-continue': 'off',
  },
  ignorePatterns: ['postcss.config.js'],
  plugins: ['jest'],
};