Fix perfectionist, upgrade to tseslint8

package.json

@@ -28,7 +28,7 @@
     "eslint-plugin-unicorn": "^55.0.0",
     "eslint-plugin-vitest": "^0.5.4",
     "globals": "^15.8.0",
-    "typescript-eslint": "^7.18.0"
+    "typescript-eslint": "^8.0.0"
   },
   "devDependencies": {
     "@tsconfig/node20": "^20.1.4",

src/configs/n.ts

@@ -1,5 +1,5 @@
-import tseslint, { ConfigWithExtends } from "typescript-eslint";
 import nodePlugin from "eslint-plugin-n";
+import tseslint, { ConfigWithExtends } from "typescript-eslint";
 
 export default tseslint.config(
   nodePlugin.configs["flat/recommended"] as ConfigWithExtends,

src/configs/perfectionist.ts

@@ -10,14 +10,7 @@ export default tseslint.config(
       /**
        * Reset sorting by a new line
        */
-      "perfectionist/sort-objects": [
-        "error",
-        { "partition-by-new-line": true },
-      ],
-      /**
-       * Make sure nulls are last in types
-       */
-      "perfectionist/sort-union-types": ["error", { "nullable-last": true }],
+      "perfectionist/sort-objects": ["error", { partitionByNewLine: true }],
     },
   },
 );

src/configs/sonarjs.ts

@@ -1,4 +1,6 @@
 import sonarJSPlugin from "eslint-plugin-sonarjs";
-import tseslint from "typescript-eslint";
+import tseslint, { type ConfigWithExtends } from "typescript-eslint";
 
-export default tseslint.config(sonarJSPlugin.configs.recommended);
+export default tseslint.config(
+  sonarJSPlugin.configs.recommended as ConfigWithExtends,
+);

src/configs/tseslint.ts

@@ -4,17 +4,12 @@ export default tseslint.config(
   ...tseslint.configs.strictTypeChecked,
   ...tseslint.configs.stylisticTypeChecked,
   {
-    rules: {
-      /**
-       * Set `@typescript-eslint/no-unused-vars` to just warn
-       */
-      "@typescript-eslint/no-unused-vars": "warn",
-      /**
-       * Disable because of perfectionist
-       */
-      "@typescript-eslint/sort-type-constituents": "off",
-      "@typescript-eslint/member-ordering": "off",
+    languageOptions: {
+      parserOptions: {
+        projectService: true,
+      },
     },
+    rules: {},
     settings: {
       node: {
         // Make sure we are looking for Typescript files as well

src/configs/vitest.ts

@@ -9,15 +9,15 @@ export default tseslint.config({
       ...vitest.environments.env.globals,
     },
   },
-  settings: {
-    vitest: {
-      typecheck: true,
-    },
-  },
   rules: {
     /**
      * Don't require items to be published for tests
      */
     "n/no-unpublished-import": "off",
   },
+  settings: {
+    vitest: {
+      typecheck: true,
+    },
+  },
 });

src/eslint.config.ts

@@ -1,14 +1,16 @@
-import tseslint from "typescript-eslint"; // Pending v8+
+import tseslint from "typescript-eslint";
+
+import arrayFunctionConfig from "./configs/array-function.js";
 import eslintJSConfig from "./configs/eslint.js";
 import nodeConfig from "./configs/n.js";
-import tseslintConfig from "./configs/tseslint.js";
+import perfectionistConfig from "./configs/perfectionist.js";
+import prettierConfig from "./configs/prettier.js";
 import promiseConfig from "./configs/promise.js";
-import unicornConfig from "./configs/unicorn.js";
-import arrayFunctionConfig from "./configs/array-function.js";
 import regexpConfig from "./configs/regexp.js";
-import sonarJsConfig from "./configs/sonarjs.js";
 import securityConfig from "./configs/security.js";
-import prettierConfig from "./configs/prettier.js";
+import sonarJsConfig from "./configs/sonarjs.js";
+import tseslintConfig from "./configs/tseslint.js";
+import unicornConfig from "./configs/unicorn.js";
 import vitestConfig from "./configs/vitest.js";
 
 /**
@@ -29,6 +31,7 @@ export default tseslint.config(
   ...regexpConfig,
   ...sonarJsConfig,
   ...securityConfig,
+  ...perfectionistConfig,
   ...prettierConfig,
   ...vitestConfig,
 );

src/types.d.ts

@@ -11,7 +11,6 @@ declare module "eslint-plugin-no-unsanitized" {
     recommended: FlatConfig.Config;
   };
 }
-declare module "eslint-plugin-perfectionist/configs/recommended-natural";
 declare module "eslint-plugin-promise" {
   const configs: {
     "flat/recommended": FlatConfig.Config;

tsconfig.json

@@ -3,8 +3,8 @@
   "display": "Base Default TSConfig",
   "extends": ["@tsconfig/node20/tsconfig", "@tsconfig/strictest/tsconfig"],
   "compilerOptions": {
-    "declaration": true,
-    "declarationMap": true,
+    "declaration": false,
+    "declarationMap": false,
     "exactOptionalPropertyTypes": false,
     "module": "NodeNext",
     "moduleResolution": "nodenext",