.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
  },
  extends: ['eslint:recommended', 'plugin:react/recommended'],
  overrides: [
    {
      env: {
        node: true,
      },
      files: ['.eslintrc.{js,cjs}'],
      parserOptions: {
        sourceType: 'script',
      },
    },
  ],
  parserOptions: {
    ecmaVersion: 'latest',
    sourceType: 'module',
  },
  plugins: ['react'],
  rules: {
    // suppress errors for missing 'import React' in files
    'react/react-in-jsx-scope': 'off',
    // allow jsx syntax in js files (for next.js project)
    'react/jsx-filename-extension': [1, { extensions: ['.js', '.jsx'] }], //should add ".ts" if typescript project
    'react/prop-types': 'off',
    'no-unused-vars': 0,
    'no-cond-assign': 0,
    'no-constant-condition': 0,
    'no-dupe-keys': 0,
    'no-fallthrough': 0,
    'react/no-unescaped-entities': 0,
    'no-undef' : 0,
  },
};