.eslintrc

{
    "root": true,

    "plugins": [
      "prettier"
    ],

    "extends": [
      "eslint:recommended",
      "prettier"
    ],

    "parser": "@typescript-eslint/parser",

    "parserOptions": {
      "ecmaVersion": 2017
    },

    "env": {
      "browser": true,
      "node": true,
      "es6": true,
      "jasmine": true
    },

    "rules": {
      "prettier/prettier": 2 ,

      "no-use-before-define": ["error", { "functions": true, "classes": true }],
      "no-var": "error",
      "vars-on-top": "error",
      "prefer-const": "error",

      "camelcase": "warn",
      "comma-spacing": [ "warn", { "before": false, "after": true } ],
      "comma-style": [ "warn", "last" ],

      "semi": [ "error", "always" ],
      "semi-spacing": [ "warn", { "before": false, "after": true }],

      "quotes": [ "warn", "single" ],
      "no-unused-expressions": "error",

      "arrow-body-style": [ "error", "always" ],
      "arrow-parens": [ "error", "always" ],
      "arrow-spacing": [ "error", { "before": true, "after": true }]
    }
}