hmr roughed in

(you have to clear-cache?)

deno.json

@@ -6,6 +6,7 @@
     "imports":
     {
         "react":"https://esm.sh/preact@10.15.1/compat",
+        "react-original":"https://esm.sh/preact@10.15.1/compat",
         "app": "./app.tsx"
     }
 }

example/app.tsx

@@ -1,5 +1,4 @@
-
-
+import React from "react";
 export default ()=>
 {
     return <div><h1>hey!</h1></div>

local.tsx

@@ -29,10 +29,33 @@ Configure({
                 inImports[key] = value.substring(1);
             }
         });
+
+        inImports["react-original"] = inImports["react"];
+        inImports["react"] = "/_lib_/react.tsx";
+        console.log(inImports);
         return inImports;
     },
-    Serve(inReq, inURL, inExt, inMap)
+    async Serve(inReq, inURL, inExt, inMap)
     {
+        if(Transpile.Check(inExt) && !inURL.searchParams.get("reload") && !inURL.pathname.startsWith("/_lib_/"))
+        {
+            const imp = await import(Directory+inURL.pathname);
+            const members = [];
+            for( const key in imp ) { members.push(key); }
+            return new Response(`import {FileListen} from "/_lib_/hmr.tsx";
+                import * as Import from "${inURL.pathname}?reload=0";
+                ${ members.map(m=>`let proxy_${m} = Import.${m};
+                export { proxy_${m} as ${m} };
+                `).join(" ") }
+                const reloadHandler = (updatedModule)=>
+                {
+                ${ members.map(m=>`proxy_${m} = updatedModule.${m};`).join("\n") }
+                };
+                FileListen("${inURL.pathname}", reloadHandler);`, {headers:{"content-type":"application/javascript"}}
+            );
+        }
+
+
         if(inReq.headers.get("upgrade") == "websocket")
         {
             try

serve.tsx

@@ -64,7 +64,8 @@ let Configuration:Configuration =
                     <script type="module">
                         import App from "app";
                         import React from "react";
-                        React.render(React.createElement(App), document.querySelector("#app"))
+                        const Wrapper =(props)=> React.createElement(App);
+                        React.render(React.createElement(Wrapper), document.querySelector("#app"))
                     </script>
                 </body>
             </html>`, {status:200, headers:{"content-type":"text/html"}});
@@ -165,16 +166,6 @@ HTTP.serve(async(req: Request)=>
         return custom;
     }
 
-    // custom page html
-    if(!ext)
-    {
-        const shell = await Configuration.Shell(req, url, ext, ImportMap);
-        if(shell)
-        {
-            return shell;
-        }
-    }
-
     // transpileable files
     if(Transpile.Check(ext))
     {
@@ -194,6 +185,16 @@ HTTP.serve(async(req: Request)=>
         }
     }
 
+    // custom page html
+    if(!ext)
+    {
+        const shell = await Configuration.Shell(req, url, ext, ImportMap);
+        if(shell)
+        {
+            return shell;
+        }
+    }
+
     // all other static files
     if(ext)
     {