.eslintrc.json

{
  "extends": [
    "next/core-web-vitals",
    "next/typescript",
    "prettier",
    "plugin:jsx-a11y/recommended"
  ],
  "rules": {
    // Possible Errors
    "no-console": "warn", // Warn on console usage (can change to 'error' to disallow)
    "no-debugger": "error", // Disallow debugger statements
    "no-extra-semi": "error", // Disallow unnecessary semicolons
    "no-irregular-whitespace": "error", // Disallow irregular whitespace

    // Best Practices
    "curly": "error", // Require curly braces for all control statements
    "eqeqeq": ["error", "always"], // Enforce strict equality (=== and !==)
    "no-eval": "error", // Disallow eval()
    "no-implied-eval": "error", // Disallow implied eval() via setTimeout, setInterval, etc.
    "no-throw-literal": "error", // Disallow throwing literals (e.g. throw "error")
    "no-unused-expressions": "error", // Disallow unused expressions

    // Variables
    "no-undef": "error", // Disallow the use of undeclared variables
    "no-unused-vars": ["warn", { "vars": "all", "args": "none" }], // Disallow unused variables

    // Stylistic Issues
    "camelcase": ["error", { "properties": "never" }], // Enforce camelCase naming convention
    "comma-dangle": ["error", "always-multiline"], // Require trailing commas in multiline object literals
    "quotes": ["error", "single", { "avoidEscape": true }], // Enforce single quotes
    "semi": ["error", "always"], // Require semicolons
    "indent": ["error", 2], // Enforce 2-space indentation
    "eol-last": ["error", "always"], // Require newline at the end of files
    "no-trailing-spaces": "error", // Disallow trailing spaces

    // ES6
    "arrow-spacing": ["error", { "before": true, "after": true }], // Enforce spacing around arrows
    "prefer-const": "error", // Prefer const for variables that are never reassigned
    "no-var": "error", // Disallow var (use let or const instead)
    "template-curly-spacing": ["error", "never"] // Disallow spaces inside template literals
  }
}