.eslintrc

{
  "env": {
    "browser": true,
    "es2021": true,
    "node": true,
    "mocha": true
  },
  "extends": [
    "eslint:recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 2021,
    "sourceType": "module"
  },
  "rules": {
    "indent": ["error", 2],
    "linebreak-style": ["error", "unix"],
    "quotes": ["error", "double"],
    "semi": ["error", "always"],
    "no-unused-vars": ["warn", { "argsIgnorePattern": "^_" }],
    "no-console": "off",
    "no-var": "error",
    "prefer-const": "error",
    "prefer-arrow-callback": "warn",
    "no-param-reassign": "warn",
    "eqeqeq": ["error", "always"],
    "curly": ["error", "all"],
    "brace-style": ["error", "1tbs"],
    "comma-dangle": ["error", "only-multiline"],
    "max-len": ["warn", { "code": 120, "ignoreStrings": true }],
    "no-trailing-spaces": "error",
    "no-multiple-empty-lines": ["error", { "max": 2 }],
    "object-curly-spacing": ["error", "always"],
    "array-bracket-spacing": ["error", "never"],
    "no-eval": "error",
    "no-implied-eval": "error",
    "no-new-func": "error",
    "no-script-url": "error",
    "no-throw-literal": "error",
    "prefer-promise-reject-errors": "error"
  }
}