eslint-prettier

.eslintrc.js

module.exports = {
  parser: 'babel-eslint',
  extends: ['plugin:prettier/recommended', 'prettier/react'],
  plugins: ['prettier', 'jest'],
  parserOptions: {
    sourceType: 'module',
    ecmaVersion: 2020,
    ecmaFeatures: {
      jsx: true,
    },
  },
  env: {
    es2020: true,
    node: true,
    'jest/globals': true,
  },
  rules: {
    'prettier/prettier': 'error',
    'no-new-func': 'off',
    'arrow-parens': 0,
  },
};

package.json

{
  ...
  "devDependencies": {
    ...
    "eslint": "^6.8.0",
    "eslint-config-prettier": "^6.10.1",
    "eslint-plugin-jest": "^23.8.2",
    "eslint-plugin-prettier": "^3.1.2",
    "eslint-plugin-react": "^7.19.0",
    ...
    "prettier": "^2.0.2",
    ...
  },
  ...
}

prettier.config.js

module.exports = {
  printWidth: 120,
  tabWidth: 2,
  useTabs: false,
  singleQuote: true,
  trailingComma: 'es5',
  parser: 'babel',
  jsxBracketSameLine: true,
  arrowParens: 'always',
};