.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true
  },
  extends: ["plugin:prettier/recommended"],
  globals: {
    Atomics: "readonly",
    SharedArrayBuffer: "readonly"
  },
  parserOptions: {
    ecmaVersion: 2018,
    sourceType: "module"
  },
  plugins: ["prettier"],
  rules: {
    "prettier/prettier": [
      "error",
      {},
      {
        usePrettierrc: true
      }
    ]
  },
  overrides: [
    {
      files: ["*.ts"],
      parser: "@typescript-eslint/parser",
      plugins: ["@typescript-eslint"],
      extends: [
        "eslint:recommended",
        "plugin:@typescript-eslint/recommended",
        "prettier/@typescript-eslint"
      ]
    }
  ]
};