.eslintrc.js

module.exports = {
  overrides: [
    {
      files: ["./**/*.ts"],
      parser: "@typescript-eslint/parser",
      extends: ["plugin:@typescript-eslint/recommended"],
      parserOptions: {
        ecmaVersion: 2018,
        sourceType: "module",
      },
      rules: {
        indent: ["error", 2],
      },
    },
    {
      files: ["./**/*.tsx"],
      parser: "@typescript-eslint/parser",
      extends: ["plugin:@typescript-eslint/recommended"],
      parserOptions: {
        ecmaVersion: 2018,
        sourceType: "module",
        jsx: true,
      },
      rules: {
        indent: ["error", 2],
      },
    },
    {
      files: ["./*.js"],
      extends: ["eslint:recommended"],
      env: {
        node: true,
      },
      parserOptions: {
        ecmaVersion: 2018,
        sourceType: "module",
      },
      rules: {
        indent: ["error", 2],
        "no-unused-vars": "off",
      },
    },
  ],
};