HMR started
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parent
9bc051c831
commit
9e2b7a5759
123
server.tsx
123
server.tsx
@ -2,8 +2,6 @@ import * as ESBuild from 'https://deno.land/x/esbuild@v0.14.45/mod.js';
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import * as MIME from "https://deno.land/std@0.180.0/media_types/mod.ts";
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import { debounce } from "https://deno.land/std@0.151.0/async/debounce.ts";
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console.log(`Serving files from "${Deno.cwd()}"`);
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const Transpiled = new Map();
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/**
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* checks for (.tsx | .jsx | .ts | .js) extensions
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@ -40,6 +38,7 @@ let ImportString = ``;
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let ImportObject = {};
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try
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{
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const confDeno = await Deno.readTextFile(Deno.cwd()+"/deno.json");
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const confDenoParsed:{importMap?:string, imports?:string} = JSON.parse(confDeno);
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if(confDenoParsed.importMap)
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@ -77,6 +76,35 @@ const Index = `
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<script>
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let reloads = 0;
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const listeners = new Map();
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const socket = new WebSocket("ws://"+document.location.host);
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socket.addEventListener('message', (event) =>
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{
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let handlers = listeners.get(event.data)??[];
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reloads++;
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Promise.all(
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handlers.map(handler=>
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{
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return import(event.data+"?reload="+reloads)
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.then(updatedModule=>handler(updatedModule));
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})
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).then(()=>
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{
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handlers = listeners.get("reload-complete")??[];
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handlers.forEach(handler=>handler());
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});
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});
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window.HMR = (path, handler)=>
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{
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const members = listeners.get(path)??[];
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members.push(handler);
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listeners.set(path, members);
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};
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</script>
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</head>
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<body>
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<div id="app">Loading</div>
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@ -109,43 +137,6 @@ Deno.serve({ port: 3000 }, async(_req:Request) =>
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console.log(`Request for "${url.pathname}"...`);
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try
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{
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// serve index by default
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let type = `text/html`;
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let body:BodyInit = Index;
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// serve .tsx .jsx .ts .js
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if(Transpileable(url.pathname))
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{
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body = Transpiled.get(url.pathname);
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type = `application/javascript`;
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if(!body)
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{
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body = await Transpile(fsPath, url.pathname);
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}
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}
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// serve static media
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else if( url.pathname.endsWith("/") === false)
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{
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body = await Deno.readFile(fsPath);
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type = MIME.typeByExtension(url.pathname.substring(url.pathname.lastIndexOf("."))) || "text/html";
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}
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return new Response(body, {headers:{"content-type":type as string}});
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}
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catch(error)
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{
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console.log(` ...404`);
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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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Deno.serve({ port: 3001 }, (_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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@ -170,8 +161,60 @@ Deno.serve({ port: 3001 }, (_req:Request) =>
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//
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}
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}
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return new Response("Overwatch: Not a websocket request.");
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try
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{
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// serve index by default
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let type = `text/html`;
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let body:BodyInit = Index;
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// serve .tsx .jsx .ts .js
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if(Transpileable(url.pathname))
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{
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type = `application/javascript`;
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if(!url.searchParams.get("reload"))
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{
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const path = `file://${Deno.cwd().replaceAll("\\", "/")+url.pathname}`;
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console.log(path);
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const imp = await import(path);
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const members = [];
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for( const key in imp ) { members.push(key); }
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body =
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`import * as Import from "${url.pathname}?reload=0";
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${ members.map(m=>`let proxy_${m} = Import.${m}; export { proxy_${m} as ${m} };`).join(" ") }
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const reloadHandler = (updatedModule)=>
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{
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${ members.map(m=>`proxy_${m} = updatedModule.${m};`).join("\n") }
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};
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window.HMR("${url.pathname}", reloadHandler);`;
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}
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else
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{
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body = Transpiled.get(url.pathname) || await Transpile(fsPath, url.pathname);
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}
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}
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// serve static media
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else if( url.pathname.endsWith("/") === false)
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{
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body = await Deno.readFile(fsPath);
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type = MIME.typeByExtension(url.pathname.substring(url.pathname.lastIndexOf("."))) || "text/html";
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}
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return new Response(body, {headers:{"content-type":type as string}});
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}
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catch(error)
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{
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console.log(` ...404`);
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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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