import { join, extname } from "https://deno.land/std/path/mod.ts";
import { exists } from "https://deno.land/std/fs/mod.ts";
import { transpile } from "https://deno.land/x/emit/mod.ts";
async function handleRequest(request: Request): Promise<Response> {
 const url = new URL(request.url);
 let path = url.pathname;
 // Serve index.html by default
 if (path === "/") {
 path = "/index.html";
 }
 const filePath = join("public", path);
 const fileExists = await exists(filePath);
 if (!fileExists) {
 return new Response("File not found", { status: 404 });
 }
 const ext = extname(filePath);
 if (ext === ".ts" || ext === ".tsx") {
 // Read TypeScript file
 // const source = await Deno.readTextFile(filePath);
 // Compile TypeScript to JavaScript
 const url = new URL(filePath, import.meta.url);
 const result = await transpile(filePath);
 const code = result.get(url.href)
 return new Response(code, {
 headers: { "content-type": "application/javascript" },
 });
 }
 // Serve other files directly
 const contentType = getContentType(ext) || "application/octet-stream";
 const content = await Deno.readFile(filePath);
 return new Response(content, { headers: { "content-type": contentType } });
}
function getContentType(ext: string): string | undefined {
 const types: { [key: string]: string } = {
 ".html": "text/html",
 ".js": "text/javascript",
 ".css": "text/css",
 ".png": "image/png",
 ".jpg": "image/jpeg",
 };
 return types[ext];
}
Deno.serve(handleRequest);