Eslint + Prettier

.eslintrc

{
  "env": {
    "browser": true
  },
  "extends": ["airbnb-base", "plugin:prettier/recommended"],
  "parser": "babel-eslint",
  "plugins": ["prettier"],
  "rules": {
    "class-methods-use-this": 0,
    "import/no-named-as-default": 0
  }
}

.prettierrc

{
  "auto_format_on_save": true,
  "auto_format_on_save_excludes": [
    "*/node_modules/*",
    "*.scss",
    "*.css"
  ],
  "trailingComma": "es5",
  "printWidth": 100,
  "singleQuote": true
}

package.json

{
  "name": "watch",
  "version": "1.0.0",
  "description": "Watch theme",
  "main": "app.js",
  "scripts": {
    "lint": "eslint js"
  },
  "author": {
    "name": "Webvi Viet Nam",
    "email": "lienhe@webvi.vn",
    "url": "http://webvi.vn"
  },
  "license": "PRIVATE",
  "devDependencies": {
    "babel-eslint": "^10.0.2",
    "eslint": "^6.0.1",
    "eslint-config-airbnb-base": "^13.2.0",
    "eslint-config-prettier": "^6.0.0",
    "eslint-plugin-import": "^2.18.0",
    "eslint-plugin-prettier": "^3.1.0"
    "prettier": "^1.18.2"
  }
}