.eslintrc.json

{
  "env": {
    "browser": true,
    "node": true,
    "jest": true,
    "amd": true,
    "commonjs": true,
    "es6": true
  },
  "parserOptions": {
    "ecmaVersion": "latest"
  },
  "globals": {
    "Promise": false,
    "BigInt": false
  },
  "extends": "eslint:recommended",
  "rules": {
    "no-empty": ["error", {
      "allowEmptyCatch": true
    }],
    "no-use-before-define": ["error", {
      "functions": false
    }],
    "indent": ["warn", 2, {
      "SwitchCase": 1,
      "ignoredNodes": ["TemplateLiteral"]
    }],
    "quotes": ["warn", "single", {
      "allowTemplateLiterals": true
    }],
    "no-multiple-empty-lines": ["warn", {
      "max": 1
    }],
    "space-infix-ops": ["warn", {
      "int32Hint": false
    }],
    "semi": ["warn", "always"],
    "no-trailing-spaces": ["warn"],
    "comma-spacing": ["warn"],
    "comma-style": ["warn"],
    "operator-linebreak": ["warn", "before"],
    "brace-style": ["warn"],
    "keyword-spacing": ["warn"],
    "object-curly-spacing": ["warn", "always"],
    "array-bracket-spacing": ["warn", "never"],
    "computed-property-spacing": ["warn", "never"],
    "space-before-blocks": ["warn", "always"],
    "spaced-comment": ["warn", "always"],
    "space-before-function-paren": ["warn", {
      "anonymous": "always",
      "named": "never",
      "asyncArrow": "always"
    }],
    "padded-blocks": ["warn", "never"],
    "curly": ["warn"],
    "eqeqeq": ["error", "always", {
      "null": "ignore"
    }],
    "no-multi-spaces": ["warn", {
      "ignoreEOLComments": true,
      "exceptions": {
        "Property": false
      }
    }],
    "prefer-rest-params": ["warn"],
    "prefer-const": ["warn"],
    "no-var": ["warn"],
    "no-extra-parens": ["warn", "all"],
    "space-in-parens": ["warn", "never"]
  }
}