.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  plugins: ['jest'],
  extends: [
    'airbnb-base',
    'plugin:prettier/recommended',
    'plugin:jest/recommended',
    'plugin:jest/style',
    'plugin:import/typescript',
  ],
  env: {
    browser: true,
    'jest/globals': true,
  },
  ignorePatterns: [
    '**/tmp/**',
    '**/build/**',
    '**/dist/**',
    '**/node_modules/**',
    '**/@types/**',
    '**/__generated__/**',
  ],
  settings: {
    'import/resolver': {
      node: {
        extensions: ['.js', '.ts'],
      },
    },
  },

  overrides: [
    {
      files: ['*.ts'],
      plugins: ['jest', '@typescript-eslint'],
      extends: [
        'airbnb-base',
        'plugin:prettier/recommended',
        'plugin:jest/recommended',
        'plugin:jest/style',
        'plugin:import/typescript',
        'plugin:@typescript-eslint/recommended',
      ],
      rules: {
        'prefer-destructuring': 'off',
        'no-console': 'error',
        'no-unused-vars': 'off',
        '@typescript-eslint/no-unused-vars': [
          'error',
          {
            args: 'all',
            argsIgnorePattern: '^_',
          },
        ],
        '@typescript-eslint/ban-ts-comment': 'warn',
        '@typescript-eslint/no-explicit-any': 'warn',
        '@typescript-eslint/explicit-function-return-type': 'off',
        'import/prefer-default-export': 'off',
        'import/no-extraneous-dependencies': 'off',
        'import/no-unresolved': 'off', // TypeScript handles this
        'import/extensions': [
          'error',
          'ignorePackages',
          {
            js: 'never',
            ts: 'never',
          },
        ],
      },
    },
  ],

  rules: {
    'prefer-destructuring': 'off',
    'no-console': 'error',
    'no-unused-vars': [
      'error',
      {
        args: 'all',
        argsIgnorePattern: '^_',
      },
    ],
    'no-mixed-operators': [
      'error',
      {
        groups: [
          ['&', '|', '^', '~', '<<', '>>', '>>>'],
          ['==', '!=', '===', '!==', '>', '>=', '<', '<='],
          ['&&', '||'],
          ['in', 'instanceof'],
        ],
        allowSamePrecedence: true,
      },
    ],
    'import/prefer-default-export': 'off',
    'import/no-extraneous-dependencies': 'off',
    'import/extensions': [
      'error',
      'ignorePackages',
      {
        js: 'never',
        ts: 'never',
      },
    ],
  },
};