.eslintrc.js

module.exports = {
  env: {
    browser: true,
    jest: true,
    node: true,
    es6: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:react/recommended',
  ],
  rules: {
    'react/no-children-prop': ['off'],

    '@typescript-eslint/no-non-null-assertion': ['off'],
    '@typescript-eslint/no-explicit-any': ['off'],
    '@typescript-eslint/explicit-function-return-type': ['off'],
    '@typescript-eslint/no-unused-vars': [
      'error',
      { argsIgnorePattern: '[iI]gnored' },
    ],
    '@typescript-eslint/ban-types': ['off'],
    '@typescript-eslint/explicit-module-boundary-types': ['off'],

    indent: ['off'],
    'react/jsx-indent': ['error', 2],
    'react/jsx-indent-props': ['error', 2],
    'linebreak-style': ['error', 'unix'],
    quotes: ['off'],
    semi: ['error', 'always'],
    'no-var': ['error'],
    'brace-style': ['error'],
    'array-bracket-spacing': ['error', 'never'],
    'block-spacing': ['error', 'always'],
    'no-spaced-func': ['error'],
    'no-whitespace-before-property': ['error'],
    'space-before-blocks': ['error', 'always'],
    'keyword-spacing': ['error'],

    // We use Typescript for this
    'react/prop-types': ['off'],
  },
  settings: {
    react: {
      version: '16.6',
    },
  },
};