.

packages/eslint-config/README.md

@@ -1,3 +0,0 @@
-# `@turbo/eslint-config`
-
-Collection of internal eslint configurations.

packages/eslint-config/base.js

@@ -0,0 +1,115 @@
+import { fixupPluginRules } from "@eslint/compat";
+import eslint from "@eslint/js";
+import eslintConfigPrettier from "eslint-config-prettier";
+import _import from "eslint-plugin-import";
+import perfectionist from "eslint-plugin-perfectionist";
+import prettier from "eslint-plugin-prettier";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+import flatCompat from "./compat.js";
+
+const tsConfig = /** @type {import("eslint").Linter.Config[]} */ (tseslint.configs.strict);
+
+/** @type {import("eslint").Linter.Config[]} */
+export default [
+  eslint.configs.recommended,
+  ...tsConfig,
+  eslintConfigPrettier.rules,
+  perfectionist.configs["recommended-natural"],
+  ...flatCompat.plugins("eslint-plugin-only-warn"),
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        JSX: true,
+        React: true,
+      },
+      parserOptions: {
+        ecmaVersion: "latest",
+        sourceType: "module",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tseslint.plugin,
+      import: fixupPluginRules(_import),
+      prettier,
+    },
+  },
+  {
+    ignores: [
+      ".*.?(c)js",
+      "*.config*.?(c)js",
+      ".*.ts",
+      "*.config*.ts",
+      "*.d.ts",
+      "dist",
+      ".git",
+      "node_modules",
+      "build",
+      ".next",
+      "*rollup*",
+    ],
+  },
+  {
+    rules: {
+      "@typescript-eslint/consistent-type-imports": [
+        "warn",
+        {
+          fixStyle: "inline-type-imports",
+          prefer: "type-imports",
+        },
+      ],
+      "@typescript-eslint/naming-convention": [
+        "warn",
+        {
+          format: ["PascalCase"],
+          selector: "typeLike",
+        },
+      ],
+      "@typescript-eslint/no-unused-vars": [
+        "warn",
+        {
+          argsIgnorePattern: "^_",
+          varsIgnorePattern: "^_",
+        },
+      ],
+      "arrow-body-style": "off",
+      "import/no-anonymous-default-export": "off",
+      "no-duplicate-imports": "error",
+      "no-unused-vars": "off",
+      "perfectionist/sort-objects": [
+        "error",
+        {
+          type: "alphabetical",
+        },
+      ],
+      "prefer-arrow-callback": "off",
+      "prettier/prettier": [
+        "error",
+        {
+          endOfLine: "lf",
+          printWidth: 80,
+          semi: true,
+          singleQuote: false,
+          tabWidth: 2,
+          trailingComma: "all",
+        },
+      ],
+    },
+    settings: {
+      "import/parsers": {
+        "@typescript-eslint/parser": [".ts", ".tsx"],
+      },
+      "import/resolver": {
+        node: {
+          extensions: [".js", ".jsx", ".ts", ".tsx"],
+        },
+        typescript: {
+          alwaysTryTypes: true,
+          project: ["./tsconfig.json"],
+        },
+      },
+    },
+  },
+];

packages/eslint-config/compat.js

@@ -0,0 +1,13 @@
+import { FlatCompat } from "@eslint/eslintrc";
+import path from "path";
+import { fileURLToPath } from "url";
+
+// mimic CommonJS variables -- not needed if using CommonJS
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname, // optional; default: process.cwd()
+});
+
+export default compat;

packages/eslint-config/express.js

@@ -0,0 +1,75 @@
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+import baseConfig from "./base.js";
+
+/** @type {import("eslint").Linter.Config[]} */
+export default [
+  ...baseConfig,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        Express: true,
+      },
+      parserOptions: {
+        ecmaVersion: "latest",
+        sourceType: "module",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tseslint.plugin,
+    },
+    rules: {
+      "@typescript-eslint/consistent-type-imports": [
+        "warn",
+        {
+          fixStyle: "inline-type-imports",
+          prefer: "type-imports",
+        },
+      ],
+      "@typescript-eslint/explicit-function-return-type": "off",
+      "@typescript-eslint/no-floating-promises": ["error", { ignoreVoid: true }],
+      // TypeScript specific rules
+      "@typescript-eslint/no-misused-promises": [
+        "error",
+        {
+          checksVoidReturn: false,
+        },
+      ],
+      "@typescript-eslint/no-unsafe-assignment": "off",
+      "@typescript-eslint/no-unsafe-member-access": "off",
+      "@typescript-eslint/no-unused-vars": [
+        "warn",
+        {
+          argsIgnorePattern: "^_",
+          varsIgnorePattern: "^_",
+        },
+      ],
+
+      "@typescript-eslint/require-await": "off",
+      "import/no-default-export": "off",
+      "import/prefer-default-export": "off",
+      // Express and Node specific rules
+      "no-console": ["warn", { allow: ["warn", "error"] }],
+
+      "no-process-env": "off",
+      // Error handling
+      "no-unused-vars": "error",
+    },
+    settings: {
+      "import/parsers": {
+        "@typescript-eslint/parser": [".ts"],
+      },
+      "import/resolver": {
+        node: {
+          extensions: [".js", ".ts"],
+        },
+        typescript: {
+          alwaysTryTypes: true,
+          project: ["./tsconfig.json"],
+        },
+      },
+    },
+  },
+];

packages/eslint-config/library.js

@@ -1,34 +0,0 @@
-const { resolve } = require("node:path");
-
-const project = resolve(process.cwd(), "tsconfig.json");
-
-/** @type {import("eslint").Linter.Config} */
-module.exports = {
-  extends: ["eslint:recommended", "prettier", "turbo"],
-  plugins: ["only-warn"],
-  globals: {
-    React: true,
-    JSX: true,
-  },
-  env: {
-    node: true,
-  },
-  settings: {
-    "import/resolver": {
-      typescript: {
-        project,
-      },
-    },
-  },
-  ignorePatterns: [
-    // Ignore dotfiles
-    ".*.js",
-    "node_modules/",
-    "dist/",
-  ],
-  overrides: [
-    {
-      files: ["*.js?(x)", "*.ts?(x)"],
-    },
-  ],
-};

packages/eslint-config/next.js

@@ -0,0 +1,81 @@
+import { fixupConfigRules } from "@eslint/compat";
+import next from "@next/eslint-plugin-next";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+import baseConfig from "./base.js";
+import flatCompat from "./compat.js";
+
+const nextConfig = /** @type {import("eslint").Linter.Config[]} */ (
+  fixupConfigRules(
+    /** @type {import("@eslint/compat").FixupConfigArray} */
+    (flatCompat.config(next.configs["core-web-vitals"]))
+  )
+);
+
+/** @type {import("eslint").Linter.Config[]} */
+export default [
+  ...baseConfig,
+  ...nextConfig,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.browser,
+        JSX: true,
+        React: true,
+      },
+      parserOptions: {
+        ecmaVersion: "latest",
+        sourceType: "module",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tseslint.plugin,
+      next,
+    },
+    rules: {
+      // Next.js specific rules
+      "@next/next/no-html-link-for-pages": "off",
+      "@next/next/no-img-element": "off",
+      // TypeScript specific rules
+      "@typescript-eslint/array-type": "off",
+      "@typescript-eslint/consistent-type-definitions": "off",
+
+      "@typescript-eslint/consistent-type-imports": [
+        "warn",
+        {
+          fixStyle: "inline-type-imports",
+          prefer: "type-imports",
+        },
+      ],
+      "@typescript-eslint/no-empty-function": "off",
+
+      // Import/Export rules
+      "import/no-default-export": "off",
+      "import/prefer-default-export": "off",
+
+      "react/display-name": "off",
+      "react/prop-types": "off",
+      // React specific rules
+      "react/react-in-jsx-scope": "off",
+    },
+    settings: {
+      "import/parsers": {
+        "@typescript-eslint/parser": [".ts", ".tsx"],
+      },
+      "import/resolver": {
+        node: {
+          extensions: [".js", ".jsx", ".ts", ".tsx"],
+        },
+        typescript: {
+          alwaysTryTypes: true,
+          project: ["./tsconfig.json"],
+        },
+      },
+      react: {
+        version: "detect",
+      },
+    },
+  },
+];

packages/eslint-config/package.json

@@ -1,20 +1,35 @@
 {
   "name": "@repo/eslint-config",
-  "version": "0.0.0",
+  "version": "0.0.1",
   "private": true,
+  "main": "./base.js",
+  "type": "module",
+  "exports": {
+    "./base": "./base.js",
+    "./next": "./next.js",
+    "./express": "./express.js",
+    "./react-internal": "./react-internal.js"
+  },
   "files": [
-    "library.js",
-    "react-internal.js",
-    "server.js",
-    "vite.js"
+    "next.js",
+    "express.js",
+    "base.js",
+    "react-internal.js"
   ],
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^8.31.0",
-    "@typescript-eslint/parser": "^8.31.0",
-    "eslint-config-prettier": "^10.1.2",
-    "eslint-config-turbo": "^2.5.2",
+    "@eslint/js": "^9.24.0",
+    "@eslint/compat": "^1.2.8",
+    "@eslint/eslintrc": "^3.3.1",
+    "@typescript-eslint/eslint-plugin": "^8.29.0",
+    "@typescript-eslint/parser": "^8.29.0",
+    "globals": "^16.0.0",
+    "eslint-plugin-prettier": "^5.2.6",
     "eslint-plugin-import": "^2.31.0",
+    "eslint-plugin-security": "^3.0.1",
+    "eslint-config-prettier": "^10.1.1",
+    "@next/eslint-plugin-next": "^15.2.4",
+    "eslint-plugin-perfectionist": "^4.11.0",
     "eslint-plugin-only-warn": "^1.1.0",
-    "typescript": "5.8.3"
+    "typescript-eslint": "^8.29.0"
   }
 }

packages/eslint-config/react-internal.js

@@ -1,39 +1,34 @@
-const { resolve } = require("node:path");
+import globals from "globals";
+import tseslint from "typescript-eslint";
 
-const project = resolve(process.cwd(), "tsconfig.json");
+import baseConfig from "./base.js";
 
-/*
- * This is a custom ESLint configuration for use with
- * internal (bundled by their consumer) libraries
- * that utilize React.
- */
-
-/** @type {import("eslint").Linter.Config} */
-module.exports = {
-  extends: ["eslint:recommended", "prettier", "turbo"],
-  plugins: ["only-warn"],
-  globals: {
-    React: true,
-    JSX: true,
-  },
-  env: {
-    browser: true,
-  },
-  settings: {
-    "import/resolver": {
-      typescript: {
-        project,
+/** @type {import("eslint").Linter.Config[]} */
+export default [
+  ...baseConfig,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        JSX: true,
+        React: true,
+      },
+      parserOptions: {
+        ecmaVersion: "latest",
+        sourceType: "module",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tseslint.plugin,
+    },
+    rules: {
+      "react/prop-types": "off",
+      "react/react-in-jsx-scope": "off",
+    },
+    settings: {
+      react: {
+        version: "detect",
       },
     },
   },
-  ignorePatterns: [
-    // Ignore dotfiles
-    ".*.js",
-    "node_modules/",
-    "dist/",
-  ],
-  overrides: [
-    // Force ESLint to detect .tsx files
-    { files: ["*.js?(x)", "*.ts?(x)"] },
-  ],
-};
+];

packages/eslint-config/server.js

@@ -1,78 +0,0 @@
-const { rules } = require("eslint-config-prettier");
-
-module.exports = {
-  parser: "@typescript-eslint/parser",
-  plugins: ["@typescript-eslint", "sort-class-members"],
-  extends: ["eslint:recommended", "plugin:@typescript-eslint/recommended", "prettier"],
-  env: {
-    browser: false,
-    node: true,
-    es6: true,
-  },
-  parserOptions: {
-    ecmaVersion: "latest",
-    sourceType: "module",
-  },
-  overrides: [
-    {
-      files: ["**/__tests__/**/*"],
-      env: {
-        jest: true,
-      },
-    },
-  ],
-  rules: {
-    "@typescript-eslint/no-explicit-any": "off",
-    "@typescript-eslint/no-inferrable-types": "off",
-    "@typescript-eslint/no-empty-interface": "off",
-    "@typescript-eslint/recommended-requiring-type-checking": "off",
-    "@typescript-eslint/no-unused-vars": "warn",
-    "lines-between-class-members": ["error", "always", { exceptAfterSingleLine: true }],
-
-    "sort-class-members/sort-class-members": [
-      2,
-      {
-        order: [
-          "[static-properties]",
-          "[static-methods]",
-          "[conventional-private-properties]",
-          "[properties]",
-          "constructor",
-          "[methods]",
-          "[conventional-private-methods]",
-        ],
-        accessorPairPositioning: "getThenSet",
-      },
-    ],
-    "@typescript-eslint/no-unused-vars": [
-      "warn",
-      { argsIgnorePattern: "^_", varsIgnorePattern: "^T$" },
-    ],
-    "import/no-relative-parent-imports": "error",
-    "import/order": [
-      "error",
-      {
-        groups: ["builtin", "external", "internal", ["parent", "sibling", "index"]],
-        pathGroups: [
-          {
-            pattern: "@/**",
-            group: "internal",
-          },
-        ],
-        pathGroupsExcludedImportTypes: ["builtin"],
-        "newlines-between": "always",
-        alphabetize: {
-          order: "asc",
-          caseInsensitive: true,
-        },
-      },
-    ],
-  },
-  settings: {
-    "import/resolver": {
-      typescript: {
-        project,
-      },
-    },
-  },
-};

packages/eslint-config/vite.js

@@ -1,19 +0,0 @@
-module.exports = {
-  env: {
-    node: true,
-  },
-  parser: "@typescript-eslint/parser",
-  extends: [
-    "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "prettier",
-  ],
-  plugins: ["@typescript-eslint"],
-  parserOptions: {
-    sourceType: "module",
-    ecmaVersion: 2020,
-  },
-  rules: {
-    "@typescript-eslint/no-non-null-assertion": "off",
-  },
-};