.eslintrc

{
    "root": true,
    "env": {
      "browser": true,
      "es6": true,
      "jasmine": true
    },
    "extends": [
      "airbnb-base",
      "eslint:recommended",
      "plugin:@typescript-eslint/eslint-recommended",
      "plugin:@typescript-eslint/recommended",
      "plugin:@typescript-eslint/recommended-requiring-type-checking",
      "prettier",
      "prettier/@typescript-eslint"
    ],
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
      "ecmaVersion": 2018,
      "comment": true,
      "project": "./tsconfig.json",
      "sourceType": "module"
    },
    "plugins": [
      "@typescript-eslint",
      "prettier",
      "header",
      "import"],
    "settings": {
      "import/core-modules": [ "vscode" ],
      "import/parsers": {
        "@typescript-eslint/parser": [".ts", ".tsx"]
      },
      "import/resolver": {
        "typescript": {},
        "node": {
          "extensions": [
            ".js",
            ".jsx",
            ".ts"
          ]
        }
      },
      "import/extensions": [
        ".js",
        ".jsx",
        ".ts"
      ]
    },
    "rules": {
      "header/header": [2, "./header.js"],
      "camelcase": 2,
      "consistent-return": 0,
      "consistent-this": [1, "that"],
      "curly": ["error", "multi-line"],
      "default-case": [2],
      "dot-notation": [2],
      "no-multiple-empty-lines": [1, { "max": 1, "maxEOF": 0 }],
      "eqeqeq": [2, "allow-null"],
      "guard-for-in": 2,
      "import/no-unresolved": ["error"],
      "import/no-duplicates": ["error"],
      "import/prefer-default-export": 0,
      "max-nested-callbacks": [1, 4],
      "max-classes-per-file": [0],
      "no-alert": 2,
      "no-caller": 2,
      "no-console": 0,
      "no-constant-condition": 2,
      "no-debugger": 2,
      "no-else-return": ["error"],
      "no-global-strict": 0,
      "no-irregular-whitespace": ["error"],
      "no-param-reassign": ["off", { "props": false }],
      "no-plusplus": "off",
      "no-restricted-syntax": "off",
      "no-shadow": ["error"],
      "no-underscore-dangle": 0,
      "no-useless-constructor": "off",
      "@typescript-eslint/no-use-before-define": 2,
      "@typescript-eslint/await-thenable": "error",
      "@typescript-eslint/unbound-method": ["error", { "ignoreStatic": true }],
      "no-var": 2,
      "object-shorthand": ["error", "properties"],
      "prefer-const": ["error", { "destructuring": "all" }],
      "prefer-template": 2,
      "radix": 2,
      "no-trailing-spaces": "error",
      "@typescript-eslint/prefer-regexp-exec": 0
    },
    "overrides": [
      {
          "files": ["*.test.ts"],
          "rules": {
              "no-unused-expressions": "off",
              "@typescript-eslint/unbound-method" : "off"
          }
      }
    ]
  }