.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"]
    }
  ]
}