.eslintrc

{
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaVersion": 2021,
    "sourceType": "module"
  },
  "env": {
    "browser": true,
    "node": true,
    "es6": true,
    "commonjs": true,
    "es2021": true
  },
  "rules": {
    "indent": ["error", 2], // Enforce a consistent indentation of 2 spaces
    "linebreak-style": ["error", "unix"], // Enforce consistent linebreak style (unix or windows)
    "quotes": ["error", "single", { "allowTemplateLiterals": true }], // Enforce single quotes with allowance for template literals
    "semi": ["error", "always"], // Require semicolons at the end of statements
    "no-unused-vars": [
      "warn",
      {
        "varsIgnorePattern": "^_",
        "args": "after-used",
        "ignoreRestSiblings": true
      }
    ], // Warn about variables that are declared but not used
    "no-console": "off", // Either turn off or warn/error for console statements
    "no-debugger": "error", // Disallow debugger statements
    "no-trailing-spaces": "error", // Disallow trailing whitespace at the end of lines
    "eol-last": ["error", "always"], // Enforce at least one newline at the end of files
    "comma-dangle": ["error", "never"], // Disallow trailing commas in object and array literals
    "prefer-const": "error", // Suggest using const for variables that are never reassigned after declared
    "eqeqeq": ["error", "always"], // Require the use of === and !== instead of == and !=
    "curly": "error", // Require curly braces for all control statements
    "brace-style": "error", // Enforce one true brace style
    "array-callback-return": "warn", // Enforce return statements in array method callbacks
    "default-case": "warn", // Require default cases in switch statements
    "consistent-return": "error" // Require return statements to either always or never specify values
  }
}