.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.eslint.json"
  },
  "env": {
    "node": true,
    "es6": true,
    "jest": true
  },
  "plugins": ["@typescript-eslint"],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "prettier"
  ],
  "rules": {
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/no-explicit-any": "off",

    // non-null assertions compromise the type safety somewhat, but many
    // our types are still imprecisely defined and we don't use noImplicitAny
    // anyway, so for the time being assertions are allowed
    "@typescript-eslint/no-non-null-assertion": "warn",
    "@typescript-eslint/no-empty-function": "warn",
    "@typescript-eslint/no-inferrable-types": "off",
    "@typescript-eslint/no-var-requires": "off",
    "@typescript-eslint/no-use-before-define": "off",
    "@typescript-eslint/no-unused-vars": "error",
    "no-prototype-builtins": "off",
    "require-atomic-updates": "off",
    "no-buffer-constructor": "error"
  },
  "overrides": [
    {
      "files": ["*.ts"],
      "rules": {
        "id-blacklist": ["error", "exports"] // in TS, use "export" instead of Node's "module.exports"
      }
    }
  ]
}