.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.json"
  },
  "plugins": ["@typescript-eslint"],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "env": {
    "node": true,
    "es6": true
  },
  "rules": {
    "curly": ["error", "multi-line"],
    "eol-last": ["error", "always"],
    "eqeqeq": ["error", "always", { "null": "ignore" }],
    "no-console": "off",
    "no-redeclare": ["error", { "builtinGlobals": true }],
    "no-return-await": "error",
    "no-unsafe-finally": "error",
    "no-unused-expressions": "error",
    "no-use-before-define": ["error", { "functions": false, "classes": false }],
    "no-var": "error",
    "one-var-declaration-per-line": "error",
    "prefer-const": "error",
    "spaced-comment": ["error", "always", { "markers": ["/"] }],
    "space-infix-ops": ["error"],
    "use-isnan": "error",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/explicit-function-return-type": [
      "warn",
      { "allowExpressions": true, "allowTypedFunctionExpressions": true }
    ],
    "@typescript-eslint/naming-convention": [
      "error",
      {
        "selector": "interface",
        "format": ["PascalCase"]
      },
      {
        "selector": "class",
        "format": ["PascalCase"]
      }
    ],
    "@typescript-eslint/no-unused-vars": "warn",
    "@typescript-eslint/no-useless-constructor": "error",
    "@typescript-eslint/no-use-before-define": "off",
    "@typescript-eslint/no-var-requires": "off"
  }
}