build: Update ESLint to v9 (#16639)

packages/@n8n/config/.eslintrc.js

@@ -1,23 +0,0 @@
-const sharedOptions = require('@n8n/eslint-config/shared');
-
-/**
- * @type {import('@types/eslint').ESLint.ConfigData}
- */
-module.exports = {
-	extends: ['@n8n/eslint-config/node'],
-
-	...sharedOptions(__dirname),
-
-	rules: {
-		'unicorn/filename-case': ['error', { case: 'kebabCase' }],
-	},
-
-	overrides: [
-		{
-			files: ['**/*.config.ts'],
-			rules: {
-				'n8n-local-rules/no-untyped-config-class-field': 'error',
-			},
-		},
-	],
-};

packages/@n8n/config/eslint.config.mjs

@@ -0,0 +1,22 @@
+import { defineConfig } from 'eslint/config';
+import { nodeConfig } from '@n8n/eslint-config/node';
+
+export default defineConfig(
+	nodeConfig,
+	{
+		rules: {
+			'unicorn/filename-case': ['error', { case: 'kebabCase' }],
+
+			// TODO: Remove this
+			'@typescript-eslint/naming-convention': 'warn',
+			'@typescript-eslint/no-unsafe-call': 'warn',
+			'@typescript-eslint/no-unsafe-function-type': 'warn',
+		},
+	},
+	{
+		files: ['**/*.config.ts'],
+		rules: {
+			'n8n-local-rules/no-untyped-config-class-field': 'error',
+		},
+	},
+);

packages/@n8n/config/package.json

@@ -8,7 +8,7 @@
     "build": "tsc -p tsconfig.build.json",
     "format": "biome format --write src test",
     "format:check": "biome ci src test",
-    "lint": "eslint .",
+    "lint": "eslint . --quiet",
     "lintfix": "eslint . --fix",
     "watch": "tsc -p tsconfig.build.json --watch",
     "test": "jest",

packages/@n8n/config/src/decorators.ts

@@ -3,7 +3,7 @@ import { Container, Service } from '@n8n/di';
 import { readFileSync } from 'fs';
 import { z } from 'zod';
 
-// eslint-disable-next-line @typescript-eslint/ban-types
+// eslint-disable-next-line @typescript-eslint/no-restricted-types
 type Class = Function;
 type Constructable<T = unknown> = new (rawValue: string) => T;
 type PropertyKey = string | symbol;