migrate from .json eslint config to new spec, update webserver logic and test cases.

Author: Defirence

boiler-plate/node-express-server/.eslintrc.json

@@ -0,0 +1,33 @@
+import { defineConfig } from "eslint/config";
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default defineConfig([{
+    extends: compat.extends("google"),
+
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+            ...globals.commonjs,
+            ...globals.node,
+        },
+
+        ecmaVersion: "latest",
+        sourceType: "commonjs",
+    },
+
+    rules: {
+        "new-cap": "off",
+    },
+}]);