.eslintrc.json

{
  // "extends": ["next/core-web-vitals", "next/typescript"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2024, // 2020
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "plugins": ["react", "unused-imports", "@typescript-eslint"],
  "env": {
    "browser": true,
    "node": true,
    "es6": true
  },
  "rules": {
    // Unused imports: Report unused imports in the codebase
    "unused-imports/no-unused-imports": "error",
    "unused-imports/no-unused-vars": [
      "warn",
      {
        "vars": "all",
        "varsIgnorePattern": "^_",
        "args": "none"
      }
    ],
    // Disallow console.log statements (you can customize this rule)
    "no-console": [
      "error",
      {
        "allow": ["warn", "error"]
      }
    ],
    // Enforce consistent indentation (2 spaces is common in JS/TS projects)
    // "indent": ["error", 2],
    // Enforce consistent linebreak style (LF is preferred for cross-platform compatibility)
    // "linebreak-style": ["error", "unix"],
    // Enforce semicolons at the end of statements
    "semi": ["error", "always"],
    // Enforce single quotes for strings
    "quotes": ["error", "single"],
    // Ensure proper use of react hooks
    "react-hooks/rules-of-hooks": "error",
    "react-hooks/exhaustive-deps": "warn",
    // Enforce prop types for better documentation in React components (if using PropTypes)
    "react/prop-types": "off", // If you're using TypeScript, you can disable this.
    // Enforce no duplicate imports
    "no-duplicate-imports": "error",
    // Prevent the use of inline comments after code
    "no-inline-comments": "error",
    // Enforce spacing around operators
    "space-infix-ops": "error",
    // Avoid multiple empty lines
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 1,
        "maxEOF": 1
      }
    ],
    // Limit line length for readability
    // "max-len": ["warn", { "code": 100 }],
    // Ensure no functions are declared inside loops (to avoid unnecessary redefinition)
    "no-loop-func": "error",
    // Avoid using `any` type in TypeScript, forcing developers to use more specific types
    "@typescript-eslint/no-explicit-any": "warn",
    // Enforce using `const` where variables are not reassigned
    "prefer-const": "error",
    // Enforce consistent return statements
    "consistent-return": "error",
    // Enforce trailing commas for multiline objects/arrays (to prevent diffs breaking on new lines)
    "comma-dangle": ["error", "always-multiline"]
  }
}