transpiler function
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parent
8917d179ef
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251
server.tsx
251
server.tsx
@ -8,60 +8,132 @@ import * as Twind from "https://esm.sh/@twind/core@1.1.3";
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import React from "react";
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import * as Iso from "@eno/iso";
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let hosted = import.meta.resolve("./");
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const Path = {
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Hosted:hosted.substring(0, hosted.length-1),
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Active:`file://${Deno.cwd().replaceAll("\\", "/")}`
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};
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console.log(Path);
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const Transpiled = new Map();
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const Transpileable =(inFilePath:string):boolean=>
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/**
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* Setup a transpiler.
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* @param inDevMode When true, starts a file-watcher
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* @returns
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*/
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function Transpiler(inDevMode:boolean)
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{
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let dotIndex = inFilePath.length-4;
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if(inFilePath[dotIndex] !== ".")
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const Transpiled = new Map();
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const Transpileable =(inFilePath:string):boolean=>
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{
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if(inFilePath[++dotIndex] !== ".")
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let dotIndex = inFilePath.length-4;
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if(inFilePath[dotIndex] !== ".")
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{
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return false;
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if(inFilePath[++dotIndex] !== ".")
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{
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return false;
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}
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}
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if(inFilePath[dotIndex+2] == "s")
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{
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const first = inFilePath[dotIndex+1];
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return (first == "t" || first == "j");
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}
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return false;
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};
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const Transpile =async(inCode:string, inKey:string):Promise<string>=>
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{
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const transpile = await ESBuild.transform(inCode, inDevMode ? { loader: "tsx", sourcemap:"inline", minify: false, sourcefile:inKey} : {loader:"tsx", minify: true});
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Transpiled.set(inKey, transpile.code);
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return transpile.code;
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};
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type Transpiler = (inPath:string, inKey:string, inCheck?:boolean)=>Promise<string>;
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const TranspileURL:Transpiler =async(inPath, inKey, inCheck)=>
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{
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if(inCheck)
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{
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const cached = Transpiled.get(inKey);
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if(cached)
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{
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return cached;
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}
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}
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let body = await fetch(inPath);
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let text = await body.text();
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return Transpile(text, inKey);
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};
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const Sockets:Set<WebSocket> = new Set();
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const SocketsBroadcast =(inData:string)=>{ for (const socket of Sockets){ socket.send(inData); } }
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const SocketsHandler = inDevMode ? (_req:Request)=>
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{
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if(_req.headers.get("upgrade") == "websocket")
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{
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try
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{
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const { response, socket } = Deno.upgradeWebSocket(_req);
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socket.onopen = () => Sockets.add(socket);
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socket.onclose = () => Sockets.delete(socket);
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socket.onmessage = (e) => {};
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socket.onerror = (e) => console.log("Socket errored:", e);
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return response;
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}
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catch(e)
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{
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//
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}
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}
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return false;
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}
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:
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()=>false;
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const watcher =async()=>
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{
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const FilesChanged:Map<string, string> = new Map();
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const ProcessFiles =debounce(async()=>
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{
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for await (const [path, action] of FilesChanged)
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{
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const key = path.substring(Deno.cwd().length).replaceAll("\\", "/");
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if(action != "remove")
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{
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await TranspileURL(Path.Active+key, key, false);
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SocketsBroadcast(key);
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}
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else
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{
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Transpiled.delete(key);
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}
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}
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FilesChanged.clear();
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}, 1000);
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for await (const event of Deno.watchFs(Deno.cwd()))
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{
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event.paths.forEach( path =>
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{
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if(Transpileable(path))
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{
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FilesChanged.set(path, event.kind);
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}
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});
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if(FilesChanged.size)
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{
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ProcessFiles();
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}
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}
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}
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if(inFilePath[dotIndex+2] == "s")
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if(inDevMode)
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{
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const first = inFilePath[dotIndex+1];
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return (first == "t" || first == "j");
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watcher().then(()=>{console.log("done watching");});
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}
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return false;
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};
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const Transpile =async(inCode:string, inKey:string):Promise<string>=>
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{
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const transpile = await ESBuild.transform(inCode, { loader: "tsx", sourcemap:"inline", minify:true, sourcefile:inKey});
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Transpiled.set(inKey, transpile.code);
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return transpile.code;
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};
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type Transpiler = (inPath:string, inKey:string, inCheck?:boolean)=>Promise<string>;
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const TranspileURL:Transpiler =async(inPath, inKey, inCheck)=>
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{
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if(inCheck)
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{
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const cached = Transpiled.get(inKey);
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if(cached)
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{
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return cached;
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}
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}
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let body = await fetch(inPath);
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let text = await body.text();
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return Transpile(text, inKey);
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};
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const LibPath = "lib";
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return {TranspileURL, Transpileable, SocketsHandler};
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}
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/**
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* Extract all configuration info form a project's deno.jsonc file
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* @param inDevMode When true, proxies react to an HMR-enabled version
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* @param inLibPath
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* @returns
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*/
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async function Configure(inDevMode:boolean, inLibPath:string)
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{
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type ImportMap = {imports?:Record<string, string>, importMap?:string};
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@ -194,14 +266,23 @@ async function Configure(inDevMode:boolean, inLibPath:string)
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return output;
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}
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const {Imports, App, TwindInst, Error} = await Configure(true, LibPath);
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let DevMode = true;
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let hosted = import.meta.resolve("./");
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const Path = {
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Hosted: hosted.substring(0, hosted.length-1),
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Active: `file://${Deno.cwd().replaceAll("\\", "/")}`,
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LibDir: "lib"
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};
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console.log(Path);
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console.log(`Dev Mode: ${DevMode}`);
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const {Transpileable, TranspileURL, SocketsHandler} = Transpiler(DevMode);
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const {Imports, App, TwindInst, Error} = await Configure(DevMode, Path.LibDir);
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if(Error)
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{
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console.log(Error);
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}
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if(App && TwindInst)
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else if(App && TwindInst)
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{
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Deno.serve({ port: Deno.args[0]||3000 }, async(_req:Request) =>
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{
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@ -209,35 +290,9 @@ if(App && TwindInst)
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const pathParts = url.pathname.substring(1, url.pathname.endsWith("/") ? url.pathname.length-1 : url.pathname.length).split("/");
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const pathLast = pathParts.at(-1);
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const pathExt:string|undefined = pathLast?.split(".")[1];
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console.log(pathParts, pathLast, pathExt);
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console.log(`Request for "${url.pathname}"...`);
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if(_req.headers.get("upgrade") == "websocket")
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{
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try
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{
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const { response, socket } = Deno.upgradeWebSocket(_req);
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socket.onopen = () =>
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{
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Sockets.add(socket);
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console.log("Overwatch: Socket created");
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};
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socket.onclose = () =>
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{
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Sockets.delete(socket);
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console.log("Overwatch: Socket deleted");
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};
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socket.onmessage = (e) => {};
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socket.onerror = (e) => console.log("Overwatch: Socket errored:", e);
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return response;
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}
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catch(e)
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{
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//
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}
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}
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const resp = SocketsHandler(_req);
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if(resp){ return resp; }
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try
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{
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@ -245,7 +300,7 @@ if(App && TwindInst)
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let type = `text/html`;
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let body:BodyInit = ``;
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const isLib = url.pathname.startsWith(`/${LibPath}/`);
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const isLib = url.pathname.startsWith(`/${Path.LibDir}/`);
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if(Transpileable(url.pathname))
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{
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@ -261,7 +316,7 @@ if(App && TwindInst)
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for( const key in imp ) { members.push(key); }
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body =
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`
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import {FileListen} from "/${LibPath}/hmr.tsx";
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import {FileListen} from "/${Path.LibDir}/hmr.tsx";
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import * as Import from "${url.pathname}?reload=0";
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${ members.map(m=>`let proxy_${m} = Import.${m};
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export { proxy_${m} as ${m} };
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@ -282,7 +337,7 @@ if(App && TwindInst)
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else if( pathExt )
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{
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type = MIME.typeByExtension(pathExt) || "text/html";
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const _fetch = await fetch((isLib ? Path.Hosted : Path.Active)+url.pathname);
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const _fetch = await fetch((Path.Active)+url.pathname);
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body = await _fetch.text();
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}
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else
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@ -349,44 +404,4 @@ if(App && TwindInst)
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return new Response(error, {status:404});
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}
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});
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const Sockets:Set<WebSocket> = new Set();
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const SocketsBroadcast =(inData:string)=>{ for (const socket of Sockets){ socket.send(inData); } }
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const FilesChanged:Map<string, string> = new Map();
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const ProcessFiles =debounce(async()=>
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{
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console.log("Processing Files...", FilesChanged);
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for await (const [path, action] of FilesChanged)
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{
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const key = path.substring(Deno.cwd().length).replaceAll("\\", "/");
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console.log(key, action);
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if(action != "remove")
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{
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await TranspileURL(Path.Active+key, key, false);
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console.log(` ...cached "${key}"`);
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SocketsBroadcast(key);
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}
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else
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{
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Transpiled.delete(key);
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}
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}
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FilesChanged.clear();
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}, 1000);
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for await (const event of Deno.watchFs(Deno.cwd()))
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{
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event.paths.forEach( path =>
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{
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if(Transpileable(path))
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{
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FilesChanged.set(path, event.kind);
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}
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});
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if(FilesChanged.size)
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{
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ProcessFiles();
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}
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}
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}
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