.eslintrc.js

module.exports = {
  root: true,
  parser: "@typescript-eslint/parser",
  parserOptions: {
    ecmaVersion: 2020,
    sourceType: "module",
    project: "./tsconfig.json",
  },
  plugins: ["@typescript-eslint"],
  extends: [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "prettier", // Disables ESLint rules that conflict with Prettier
  ],
  rules: {
    // Indentation
    "@typescript-eslint/indent": ["error", 2], // 2 spaces

    // Semicolons
    "@typescript-eslint/semi": ["error", "always"],

    // Quotes
    "@typescript-eslint/quotes": ["error", "single", { avoidEscape: true }],

    // Functions
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      {
        allowExpressions: true,
        allowTypedFunctionExpressions: true,
      },
    ],

    // Variables
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        argsIgnorePattern: "^_",
        varsIgnorePattern: "^_",
      },
    ],

    // Classes
    "@typescript-eslint/explicit-member-accessibility": [
      "error",
      {
        accessibility: "explicit",
      },
    ],

    // Type Annotations
    "@typescript-eslint/no-explicit-any": "warn",
    "@typescript-eslint/explicit-module-boundary-types": "error",

    // Other
    "no-console": ["warn", { allow: ["warn", "error"] }],
    eqeqeq: ["error", "always"],
  },
};