index.js

module.exports = {
  extends: "standard",
  parser: "@typescript-eslint/parser",
  plugins: ["@typescript-eslint"],
  rules: {
    semi: ["error", "always"],
    "no-var": "error",
    "no-unused-vars": "off",
    "no-global-assign": "off",
    "guard-for-in": "error",
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        vars: "all",
        args: "after-used",
        ignoreRestSiblings: true,
      },
    ],
    "prefer-const": [
      "error",
      {
        destructuring: "all",
      },
    ],
    "node/no-callback-literal": "off",
    "node/no-deprecated-api": "off",
  },
  parserOptions: {
    ecmaVersion: 6,
    sourceType: "module",
  },
  overrides: [
    {
      files: "*.js",
      rules: {
        "@typescript-eslint/no-unused-vars": "off",
      },
    },
    {
      files: "*.ts",
      rules: {
        "no-undef": "off",
        "no-redeclare": "off",
        "@typescript-eslint/no-redeclare": ["error"],
        "no-use-before-define": "off",
      },
    },
    {
      files: "*.d.ts",
      rules: {
        "no-useless-constructor": "off",
        "@typescript-eslint/no-unused-vars": "off",
      },
    },
  ],
};