.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    node: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:react/recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:react-hooks/recommended',
    'prettier',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 12,
    sourceType: 'module',
    tsconfigRootDir: __dirname,
    project: ['./tsconfig.json'],
  },
  settings: {
    react: {
      version: 'detect',
    },
  },
  plugins: ['react', '@typescript-eslint'],
  rules: {
    'newline-before-return': 'error',
    'no-console': 'warn',
    'no-var': 'error',
    'no-dupe-class-members': 'error',
    // Fixed by Prettier
    // enforce newline at the end of file, with no multiple empty lines (fixable)
    // 'eol-last': ['error', 'always'],
    'object-shorthand': ['error', 'always'],
    'prefer-arrow-callback': 'error',
    'prefer-const': 'error',
    'prefer-spread': 'error',
    'require-yield': 'error',
    // React roules
    'react/prop-types': 'off',
    // don't need import React
    'react/react-in-jsx-scope': 'off',
  },
};