.eslintrc.json

{
    "parser": "@typescript-eslint/parser",
    "plugins": [
      "@typescript-eslint"
    ],
    "env": {
        "browser": true,
        "es6": true,
        "node": true
    },
    "extends": [
      "eslint:recommended",
      "plugin:@typescript-eslint/eslint-recommended",
      "plugin:@typescript-eslint/recommended"
    ],
    "parserOptions": {
        "ecmaVersion": 2018,
        "sourceType": "module"
    },
    "rules": {
      "@typescript-eslint/no-use-before-define": "off",
      "@typescript-eslint/no-unused-vars": ["warn", {"argsIgnorePattern": "^_"}],
      "@typescript-eslint/no-non-null-assertion": "off",
      "quotes": ["warn", "single"],
      "max-len": ["warn", {"code": 100, "tabWidth": 4, "ignoreUrls": true, "ignorePattern": "^import|^export"}],
      "newline-per-chained-call": [2, {"ignoreChainWithDepth": 3}]
    },
    "ignorePatterns": ["**/*.js"]
}