.eslintrc.json

{
  "env": {
      "es6": true,
      "node": true,
      "jasmine": true
  },
  "extends": "eslint:recommended",
  "parserOptions": {
      "ecmaVersion": 9,
      "ecmaFeatures": {
          "modules": true,
          "spread": true,
          "restParams": true,
          "experimentalObjectRestSpread": true
      },
      "sourceType": "module"
  },
  "rules": {
      "indent": [
          "error",
          2,
          {
              "SwitchCase": 1,
              "ArrayExpression": 1,
              "CallExpression": {
                  "arguments": 1
              },
              "FunctionExpression": {
                  "body": 1,
                  "parameters": 2
              },
              "FunctionDeclaration": {
                  "body": 1,
                  "parameters": 2
              }
          }
      ],
      "linebreak-style": [
          "error",
          "unix"
      ],
      "quotes": [
          "error",
          "single"
      ],
      "semi": [
          "error",
          "always"
      ],
      "no-console": "off",
      "no-multi-spaces": [
          "error",
          {
              "ignoreEOLComments": true
          }
      ],
      "brace-style": "error",
      "block-spacing": ["error", "always"],
      "space-before-function-paren": ["error", "never"],
      "space-in-parens": ["error", "never"],
      "func-call-spacing": ["error", "never"],
      "no-var": "error"
  }
}