.eslintre.js

module.exports = {
    env: {
      browser: true,
      es6: true,
    },
    extends: [
      'eslint:recommended',
      'plugin:react/recommended',
      'eslint-config-prettier',
      'eslint-config-prettier/react',
    ],
    plugins: ['react', 'prettier'],
    settings: {
      react: {
        pragma: 'React',
        version: '16.3',
      },
    },
    parserOptions: {
      ecmaFeatures: {
        jsx: true,
      },
      ecmaVersion: 2018,
      sourceType: 'module',
    },
    rules: {
      'max-len': ['off', 80],
      'no-undef': 'off',
      'linebreak-style': ['error', 'unix'],
      'prettier/prettier': 'error',
      'react/prop-types': 'off',
    },
    overrides: [
      {
        files: ['*.js'],
        parser: 'babel-eslint',
      },
      {
        files: ['*.ts', '*.tsx'],
        parser: '@typescript-eslint/parser',
        plugins: ['@typescript-eslint/eslint-plugin'],
        rules: {
          '@typescript-eslint/no-unused-vars': [
            'error',
            { argsIgnorePattern: '^_' },
          ],
  
          'no-dupe-class-members': 'off',
          'no-unused-vars': 'off',
        },
      },
    ],
  };