.eslintrc.json

{
  "env": {
    "browser": true,
    "es2021": true,
    "node": true
  },
  "extends": [
    "eslint:recommended"
  ],
  "globals": {
    "document": false,
    "escape": false,
    "navigator": false,
    "unescape": false,
    "window": false,
    "describe": true,
    "before": true,
    "it": true,
    "expect": true,
    "sinon": true,
    "chrome": true
  },
  "plugins": [
    "import"
  ],
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module"
  },
  "rules": {
    "comma-dangle": ["error", "always-multiline"],
    "no-console": ["error", { "allow": ["warn", "error"] }],
    "import/no-commonjs": "error",
    "indent": ["error", 2],
    "max-len": ["error", {
      "ignoreRegExpLiterals": true,
      "ignoreTrailingComments": true,
      "ignoreUrls": true,
      "tabWidth": 2
    }],
    "object-curly-spacing": ["error", "always"],
    "quotes": ["error", "single"],
    "semi": ["error", "always"],
    "space-before-function-paren": ["error", "always"]
  }
}