.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 }]
  }
}