.eslintrc.js

module.exports = {
  extends: [
    'eslint:recommended',
    'plugin:prettier/recommended',
  ],
  parser: '@babel/eslint-parser',
  plugins: [
    'prettier',
  ],
  ignorePatterns: ['node_modules', 'dist'],
  settings: {
    react: {
      version: 'detect',
    },
  },
  rules: {
    'prettier/prettier': 'warn',
    'no-console': 'off',
    'prefer-object-spread': 'warn',
    'prefer-spread': 'warn',
    'no-unused-expressions': [
      'error',
      { allowShortCircuit: true, allowTernary: true },
    ],
    'no-useless-escape': 'off',
    camelcase: ['warn', { properties: 'never' }],
    'no-new': 'warn',
    'new-cap': ['error', { newIsCap: true, capIsNew: false }],
    'no-unused-vars': [
      'error',
      { varsIgnorePattern: '^_', argsIgnorePattern: '^_' },
    ],
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/no-unused-vars": "off",
    "@typescript-eslint/ban-ts-comment": "off"
  },
  overrides: [
    {
      files: ['*.ts', '*.tsx'],
      parser: '@typescript-eslint/parser',
      extends: ['plugin:@typescript-eslint/recommended', 'prettier'],
      rules: {
        '@typescript-eslint/no-var-requires': 'off',
        '@typescript-eslint/explicit-function-return-type': 'off',
        '@typescript-eslint/no-empty-interface': 'off',
        '@typescript-eslint/explicit-module-boundary-types': 'off',
        '@typescript-eslint/ban-types': 'warn',
        'no-empty-function': 'off',
        '@typescript-eslint/no-empty-function': 'off',
        camelcase: 'off',
        '@typescript-eslint/camelcase': 'off',
        'no-use-before-define': 'off',
        '@typescript-eslint/no-use-before-define': 'off',
        '@typescript-eslint/no-unused-vars': [
          'error',
          { varsIgnorePattern: '^_', argsIgnorePattern: '^_' },
        ],
      },
    },
    {
      files: ['*.test.*', '**/__mocks__/**'],
      env: {
        node: true,
        es6: true,
        commonjs: true,
        jest: true,
      },
    },
    {
      files: [
        '.babelrc.js',
        'babel.config.js',
        '.eslintrc.js',
        '*.config.js',
        'jest.setup.js',
      ],
      env: {
        node: true,
        commonjs: true,
        jest: true,
      },
    },
  ],
}