.eslintrc.json

{
    "parserOptions": {
      "ecmaVersion": 9,
      "ecmaFeatures": {
        "jsx": false
      }
    },
    "env": {
      "node": true,
      "jasmine": true
    },
    "rules": {
      "consistent-return": "error",
      "curly": "error",
      "default-case": "error",
      "guard-for-in": "error",
      "no-alert": "error",
      "no-caller": "error",
      "no-cond-assign": "error",
      "no-constant-condition": "error",
      "no-debugger": "error",
      "no-dupe-args": "error",
      "no-dupe-keys": "error",
      "no-duplicate-case": "error",
      "no-else-return": "error",
      "no-empty": "error",
      "no-empty-character-class": "error",
      "no-eq-null": "error",
      "no-ex-assign": "error",
      "no-extend-native": "error",
      "no-extra-boolean-cast": "error",
      "no-extra-semi": "error",
      "no-fallthrough": "error",
      "no-func-assign": "error",
      "no-invalid-regexp": "error",
      "no-invalid-this": "error",
      "no-irregular-whitespace": "error",
      "no-lone-blocks": "error",
      "no-loop-func": "error",
      "no-multi-spaces": "error",
      "no-new-wrappers": "error",
      "no-new": "error",
      "no-octal": "error",
      "no-negated-in-lhs": "error",
      "no-obj-calls": "error",
      "no-redeclare": "error",
      "no-regex-spaces": "error",
      "no-return-assign": "error",
      "no-self-compare": "error",
      "no-unreachable": "error",
      "no-unexpected-multiline": "error",
      "no-unused-expressions": "error",
      "no-use-before-define": "off",
      "use-isnan": "error",
      "valid-typeof": "error",
      "array-bracket-spacing": ["error", "never"],
      "max-len": ["error", 120],
      "brace-style": ["error", "stroustrup", { "allowSingleLine": true }],
      "comma-spacing": ["error", {"before": false, "after": true}],
      "comma-style": ["error", "last"],
      "computed-property-spacing": ["error", "never"],
      "consistent-this": ["error", "self"],
      "eol-last": "error",
      "new-cap": "error",
      "new-parens": "error",
      "no-mixed-spaces-and-tabs": "error",
      "no-nested-ternary": "error",
      "no-spaced-func": "error",
      "no-trailing-spaces": "error",
      "keyword-spacing": ["error", {"before": true, "after": true}],
      "space-before-blocks": ["error", "always"],
      "@typescript-eslint/explicit-function-return-type": "off",
      "camelcase": ["error", { "properties": "never" }],
      "@typescript-eslint/ban-ts-ignore": "off",
      "no-unused-vars": "off",
      "strict": ["error", "never" ],
      "no-var": "error",
      "@typescript-eslint/explicit-module-boundary-types": "off",
      "@typescript-eslint/no-explicit-any": "warn",
      "@typescript-eslint/no-shadow": ["error"]
    },
    "overrides": [
      {
        "files": ["*.ts"],
        "parser": "@typescript-eslint/parser",
        "plugins": ["@typescript-eslint"],
        "extends": ["plugin:@typescript-eslint/recommended", "eslint-config-prettier"]
      }
    ]
  }