Initial commit

vite.config.ts

@@ -0,0 +1,72 @@
+import { defineConfig, loadEnv, type Plugin } from "vite";
+import react from "@vitejs/plugin-react";
+import path from "node:path";
+
+function apiChatPlugin(): Plugin {
+  return {
+    name: "api-chat-middleware",
+    configureServer(server) {
+      server.middlewares.use("/api/chat", async (req, res, next) => {
+        if (req.method !== "POST") return next();
+        try {
+          const mod = await server.ssrLoadModule("/api/chat.ts");
+          const handler = (mod as { POST: (req: Request) => Promise<Response> })
+            .POST;
+
+          const chunks: Buffer[] = [];
+          for await (const c of req) chunks.push(c as Buffer);
+          const body = chunks.length ? Buffer.concat(chunks) : undefined;
+
+          const headers = new Headers();
+          for (const [k, v] of Object.entries(req.headers)) {
+            if (Array.isArray(v)) headers.set(k, v.join(", "));
+            else if (typeof v === "string") headers.set(k, v);
+          }
+
+          const fetchReq = new Request(
+            `http://localhost${req.url ?? "/api/chat"}`,
+            { method: "POST", headers, body },
+          );
+          const response = await handler(fetchReq);
+
+          res.statusCode = response.status;
+          response.headers.forEach((value, key) => res.setHeader(key, value));
+
+          if (response.body) {
+            const reader = response.body.getReader();
+            while (true) {
+              const { done, value } = await reader.read();
+              if (done) break;
+              res.write(Buffer.from(value));
+            }
+          }
+          res.end();
+        } catch (err) {
+          console.error("/api/chat error", err);
+          res.statusCode = 500;
+          res.end(err instanceof Error ? err.message : "internal error");
+        }
+      });
+    },
+  };
+}
+
+export default defineConfig(({ mode }) => {
+  const env = loadEnv(mode, process.cwd(), "");
+  for (const k of Object.keys(env)) {
+    if (process.env[k] === undefined) process.env[k] = env[k];
+  }
+
+  return {
+    plugins: [react(), apiChatPlugin()],
+    resolve: {
+      alias: {
+        "@": path.resolve(__dirname, "."),
+        "~": path.resolve(__dirname, "."),
+      },
+    },
+    server: {
+      port: 3001,
+    },
+  };
+});