transpiler function

server.tsx

@@ -8,60 +8,132 @@ import * as Twind from "https://esm.sh/@twind/core@1.1.3";
 import React from "react";
 import * as Iso from "@eno/iso";
 
-let hosted = import.meta.resolve("./");
+/**
-const Path = {
+ * Setup a transpiler.
-    Hosted:hosted.substring(0, hosted.length-1),
+ * @param inDevMode When true, starts a file-watcher
-    Active:`file://${Deno.cwd().replaceAll("\\", "/")}`
+ * @returns 
-};
+ */
-console.log(Path);
+function Transpiler(inDevMode:boolean)
-
-const Transpiled = new Map();
-const Transpileable =(inFilePath:string):boolean=>
 {
-    let dotIndex = inFilePath.length-4;
+    const Transpiled = new Map();
-    if(inFilePath[dotIndex] !== ".")
+    const Transpileable =(inFilePath:string):boolean=>
     {
-        if(inFilePath[++dotIndex] !== ".")
+        let dotIndex = inFilePath.length-4;
+        if(inFilePath[dotIndex] !== ".")
         {
-            return false;
+            if(inFilePath[++dotIndex] !== ".")
+            {
+                return false;
+            }
+        }
+    
+        if(inFilePath[dotIndex+2] == "s")
+        {
+            const first = inFilePath[dotIndex+1];
+            return (first == "t" || first == "j");
+        }
+    
+        return false;
+    };
+    const Transpile =async(inCode:string, inKey:string):Promise<string>=>
+    {
+        const transpile = await ESBuild.transform(inCode, inDevMode ? { loader: "tsx", sourcemap:"inline", minify: false, sourcefile:inKey} : {loader:"tsx", minify: true});
+    
+        Transpiled.set(inKey, transpile.code);
+        return transpile.code;
+    };
+    type Transpiler = (inPath:string, inKey:string, inCheck?:boolean)=>Promise<string>;
+    const TranspileURL:Transpiler =async(inPath, inKey, inCheck)=>
+    {
+        if(inCheck)
+        {
+            const cached = Transpiled.get(inKey);
+            if(cached)
+            {
+                return cached;
+            }
+        }
+        let body = await fetch(inPath);
+        let text = await body.text();
+        return Transpile(text, inKey);
+    };
+    
+    const Sockets:Set<WebSocket> = new Set();
+    const SocketsBroadcast =(inData:string)=>{ for (const socket of Sockets){ socket.send(inData); } }
+    const SocketsHandler = inDevMode ? (_req:Request)=>
+    {
+        if(_req.headers.get("upgrade") == "websocket")
+        {
+            try
+            {
+              const { response, socket } = Deno.upgradeWebSocket(_req);
+              socket.onopen = () => Sockets.add(socket);
+              socket.onclose = () => Sockets.delete(socket);
+              socket.onmessage = (e) => {};
+              socket.onerror = (e) => console.log("Socket errored:", e);
+              return response;
+            }
+            catch(e)
+            {
+                //
+            }
+        }
+        return false;
+    }
+    :
+    ()=>false;
+
+    const watcher =async()=>
+    {
+        const FilesChanged:Map<string, string> = new Map();
+        const ProcessFiles =debounce(async()=>
+        {
+            for await (const [path, action] of FilesChanged)
+            {
+                const key = path.substring(Deno.cwd().length).replaceAll("\\", "/");
+                if(action != "remove")
+                {
+                    await TranspileURL(Path.Active+key, key, false);
+                    SocketsBroadcast(key);
+                }
+                else
+                {
+                    Transpiled.delete(key);
+                }
+            }
+            FilesChanged.clear();
+        }, 1000);
+        for await (const event of Deno.watchFs(Deno.cwd()))
+        {
+            event.paths.forEach( path =>
+            {
+                if(Transpileable(path))
+                {
+                    FilesChanged.set(path, event.kind);
+                }
+            });
+            if(FilesChanged.size)
+            {
+                ProcessFiles();
+            }
         }
     }
 
-    if(inFilePath[dotIndex+2] == "s")
+    if(inDevMode)
     {
-        const first = inFilePath[dotIndex+1];
+        watcher().then(()=>{console.log("done watching");});
-        return (first == "t" || first == "j");
     }
 
-    return false;
+    return {TranspileURL, Transpileable, SocketsHandler};
-};
-const Transpile =async(inCode:string, inKey:string):Promise<string>=>
-{
-    const transpile = await ESBuild.transform(inCode, { loader: "tsx", sourcemap:"inline", minify:true, sourcefile:inKey});
-
-    Transpiled.set(inKey, transpile.code);
-    return transpile.code;
-};
-type Transpiler = (inPath:string, inKey:string, inCheck?:boolean)=>Promise<string>;
-const TranspileURL:Transpiler =async(inPath, inKey, inCheck)=>
-{
-    if(inCheck)
-    {
-        const cached = Transpiled.get(inKey);
-        if(cached)
-        {
-            return cached;
-        }
-    }
-    let body = await fetch(inPath);
-    let text = await body.text();
-    return Transpile(text, inKey);
-};
-
-
-const LibPath = "lib";
 
+}
 
+/**
+ * Extract all configuration info form a project's deno.jsonc file
+ * @param inDevMode When true, proxies react to an HMR-enabled version
+ * @param inLibPath 
+ * @returns 
+ */
 async function Configure(inDevMode:boolean, inLibPath:string)
 {
     type ImportMap = {imports?:Record<string, string>, importMap?:string};
@@ -194,14 +266,23 @@ async function Configure(inDevMode:boolean, inLibPath:string)
     return output;
 }
 
-const {Imports, App, TwindInst, Error} = await Configure(true, LibPath);
+let DevMode = true;
+let hosted = import.meta.resolve("./");
+const Path = {
+    Hosted: hosted.substring(0, hosted.length-1),
+    Active: `file://${Deno.cwd().replaceAll("\\", "/")}`,
+    LibDir: "lib"
+};
+console.log(Path);
+console.log(`Dev Mode: ${DevMode}`);
 
+const {Transpileable, TranspileURL, SocketsHandler} = Transpiler(DevMode);
+const {Imports, App, TwindInst, Error} = await Configure(DevMode, Path.LibDir);
 if(Error)
 {
     console.log(Error);
 }
-
+else if(App && TwindInst)
-if(App && TwindInst)
 {
     Deno.serve({ port: Deno.args[0]||3000 }, async(_req:Request) =>
     {
@@ -209,35 +290,9 @@ if(App && TwindInst)
         const pathParts = url.pathname.substring(1, url.pathname.endsWith("/") ? url.pathname.length-1 : url.pathname.length).split("/");
         const pathLast = pathParts.at(-1);
         const pathExt:string|undefined = pathLast?.split(".")[1];
-    
+        
-        console.log(pathParts, pathLast, pathExt);
+        const resp = SocketsHandler(_req);
-    
+        if(resp){ return resp; }
-        console.log(`Request for "${url.pathname}"...`);    
-    
-        if(_req.headers.get("upgrade") == "websocket")
-        {
-            try
-            {
-              const { response, socket } = Deno.upgradeWebSocket(_req);
-              socket.onopen = () =>
-              {
-                  Sockets.add(socket);
-                  console.log("Overwatch: Socket created");
-              };
-              socket.onclose = () =>
-              {
-                  Sockets.delete(socket);
-                  console.log("Overwatch: Socket deleted");
-              };
-              socket.onmessage = (e) => {};
-              socket.onerror = (e) => console.log("Overwatch: Socket errored:", e);
-              return response;
-            }
-            catch(e)
-            {
-                //
-            }
-        }
     
         try
         {
@@ -245,7 +300,7 @@ if(App && TwindInst)
             let type = `text/html`;
             let body:BodyInit = ``;
     
-            const isLib = url.pathname.startsWith(`/${LibPath}/`);
+            const isLib = url.pathname.startsWith(`/${Path.LibDir}/`);
     
             if(Transpileable(url.pathname))
             {
@@ -261,7 +316,7 @@ if(App && TwindInst)
                     for( const key in imp ) { members.push(key); }
                     body =
     `
-    import {FileListen} from "/${LibPath}/hmr.tsx";
+    import {FileListen} from "/${Path.LibDir}/hmr.tsx";
     import * as Import from "${url.pathname}?reload=0";
     ${ members.map(m=>`let proxy_${m} = Import.${m};
     export { proxy_${m} as ${m} };
@@ -282,7 +337,7 @@ if(App && TwindInst)
             else if( pathExt )
             {
                 type = MIME.typeByExtension(pathExt) || "text/html";
-                const _fetch = await fetch((isLib ? Path.Hosted : Path.Active)+url.pathname);
+                const _fetch = await fetch((Path.Active)+url.pathname);
                 body = await _fetch.text();
             }
             else
@@ -349,44 +404,4 @@ if(App && TwindInst)
             return new Response(error, {status:404});
         }
     });
-    
-    const Sockets:Set<WebSocket> = new Set();
-    const SocketsBroadcast =(inData:string)=>{ for (const socket of Sockets){ socket.send(inData); } }
-    
-    const FilesChanged:Map<string, string> = new Map();
-    const ProcessFiles =debounce(async()=>
-    {
-        console.log("Processing Files...", FilesChanged);
-        for await (const [path, action] of FilesChanged)
-        {
-            const key = path.substring(Deno.cwd().length).replaceAll("\\", "/");
-            console.log(key, action);
-    
-            if(action != "remove")
-            {
-                await TranspileURL(Path.Active+key, key, false);
-                console.log(`  ...cached "${key}"`);
-                SocketsBroadcast(key);
-            }
-            else
-            {
-                Transpiled.delete(key);
-            }
-        }
-        FilesChanged.clear();
-    }, 1000);
-    for await (const event of Deno.watchFs(Deno.cwd()))
-    {
-        event.paths.forEach( path =>
-        {
-            if(Transpileable(path))
-            {
-                FilesChanged.set(path, event.kind);
-            }
-        });
-        if(FilesChanged.size)
-        {
-            ProcessFiles();
-        }
-    }
 }