[TS] Initial Typescript fix

vite.config.ts

@@ -0,0 +1,29 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+import tsconfigPaths from "vite-tsconfig-paths";
+
+const { MCL_VITE_BACKEND_URL, MCL_VITE_DEV_PORT } = process.env;
+const backendUrl = MCL_VITE_BACKEND_URL ?? "http://localhost:52000";
+const vitePort = MCL_VITE_DEV_PORT ?? 52025;
+
+export default () => {
+  return defineConfig({
+    plugins: [react(), tsconfigPaths()],
+    server: {
+      host: "0.0.0.0",
+      port: Number(vitePort),
+      proxy: {
+        "/api": backendUrl,
+        "/socket.io": backendUrl,
+        "/healthz": backendUrl,
+      },
+      hmr: {
+        protocol: process.env.MCL_VITE_DEV_PROTOCOL,
+      },
+    },
+    build: {
+      outDir: "./build/vite",
+    },
+    base: "/mcl/",
+  });
+};