.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module"
  },
  "plugins": ["@typescript-eslint", "html"],
  "env": {
    "browser": true,
    "es6": true,
    "mocha": true,
    "node": true
  },
  "rules": {
    "no-prototype-builtins": "off",
    "@typescript-eslint/no-var-requires": "off",
    "@typescript-eslint/ban-types": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/no-empty-function": "off",
    "@typescript-eslint/no-explicit-any": "error",
    "@typescript-eslint/no-non-null-assertion": "off",
    "@typescript-eslint/no-this-alias": "off",
    "@typescript-eslint/no-unused-vars": [
      "warn",
      {
        "argsIgnorePattern": "^_"
      }
    ]
  },
  "overrides": [
    {
      "files": ["gulpfile.js", "rollup.config.js"],
      "env": {
        "node": true
      },
      "rules": {
        "@typescript-eslint/no-var-requires": "off"
      }
    },
    {
      "files": ["packages/*/externs/**/*"],
      "rules": {
        "@typescript-eslint/no-unused-vars": "off"
      }
    }
  ]
}