2023-03-16 08:25:44 -04:00
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import * as ESBuild from 'https://deno.land/x/esbuild@v0.14.45/mod.js';
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2022-12-01 17:10:59 -05:00
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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 MIME:Record<string, string> = {
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".aac": "audio/aac",
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".abw": "application/x-abiword",
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".arc": "application/x-freearc",
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".avif": "image/avif",
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".avi": "video/x-msvideo",
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".azw": "application/vnd.amazon.ebook",
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".bin": "application/octet-stream",
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".bmp": "image/bmp",
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".bz": "application/x-bzip",
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".bz2": "application/x-bzip2",
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".cda": "application/x-cdf",
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".csh": "application/x-csh",
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".css": "text/css",
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".csv": "text/csv",
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".doc": "application/msword",
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".docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
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".eot": "application/vnd.ms-fontobject",
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".epub": "application/epub+zip",
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".gz": "application/gzip",
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".gif": "image/gif",
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".htm": "text/html",
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".html": "text/html",
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".ico": "image/x-icon",
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".ics": "text/calendar",
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".jar": "application/java-archive",
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".jpeg": "image/jpeg",
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".jpg": "image/jpeg",
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".js": "application/javascript",
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".jsx": "application/javascript",
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".json": "application/json",
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".jsonld": "application/ld+json",
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".mid": "audio/midi",
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".midi": "audio/midi",
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".mjs": "text/javascript",
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".mp3": "audio/mpeg",
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".mp4": "video/mp4",
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".mpeg": "video/mpeg",
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".mpkg": "application/vnd.apple.installer+xml",
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".odp": "application/vnd.oasis.opendocument.presentation",
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".ods": "application/vnd.oasis.opendocument.spreadsheet",
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".odt": "application/vnd.oasis.opendocument.text",
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".oga": "audio/ogg",
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".ogv": "video/ogg",
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".ogx": "application/ogg",
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".opus": "audio/opus",
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".otf": "font/otf",
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".png": "image/png",
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".pdf": "application/pdf",
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".php": "application/x-httpd-php",
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".ppt": "application/vnd.ms-powerpoint",
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".pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
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".rar": "application/vnd.rar",
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".rtf": "application/rtf",
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".sh": "application/x-sh",
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".svg": "image/svg+xml",
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".swf": "application/x-shockwave-flash",
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".tar": "application/x-tar",
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".tif": "image/tiff",
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".tiff": "image/tiff",
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".ts": "application/javascript",
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".tsx": "application/javascript",
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".ttf": "font/ttf",
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".txt": "text/plain",
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".vsd": "application/vnd.visio",
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".wav": "audio/wav",
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".weba": "audio/webm",
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".webm": "video/webm",
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".webp": "image/webp",
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".woff": "font/woff",
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".woff2": "font/woff2",
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".xhtml": "application/xhtml+xml",
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".xls": "application/vnd.ms-excel",
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".xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
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".xml": "application/xml",
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".xul": "application/vnd.mozilla.xul+xml",
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".zip": "application/zip",
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".3gp": "video/3gpp",
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".3g2": "video/3gpp2",
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".7z": "application/x-7z-compressed"
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};
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const Type =(inPath:string):string|undefined=>
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{
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const dot:number = inPath.lastIndexOf(".");
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const ext = dot > -1 ? inPath.substring(dot) : ".html";
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return MIME[ext];
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};
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const Transpiled = new Map();
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const Transpile =async(inPath:string, inKey:string):Promise<string>=>
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{
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const body = await Deno.readTextFile(inPath);
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2023-03-16 08:25:44 -04:00
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const transpile = await ESBuild.transform(body, { loader: "tsx", sourcemap: "inline" });
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2022-12-01 17:10:59 -05:00
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Transpiled.set(inKey, transpile.code);
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return transpile.code;
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};
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const confDeno = await Deno.readTextFile(Deno.cwd()+"/deno.json");
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const pathImport = JSON.parse(confDeno).importMap;
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const confImports = await Deno.readTextFile(pathImport);
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const Index = `
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<!doctype html>
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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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</head>
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<body>
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<div id="app">Loading</div>
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<script type="importmap">${confImports}</script>
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<script async src="https://ga.jspm.io/npm:es-module-shims@1.5.1/dist/es-module-shims.js" crossorigin="anonymous"></script>
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<script type="module">
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import * as TW from "https://esm.sh/@twind/core@1.0.1";
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import TWPreTail from "https://esm.sh/@twind/preset-tailwind@1.0.1";
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import TWPreAuto from "https://esm.sh/@twind/preset-autoprefix@1.0.1";
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const Configure = {presets: [TWPreTail(), TWPreAuto()]};
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const ShadowDOM = document.querySelector("#app").attachShadow({mode: "open"});
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const ShadowDiv = document.createElement("div");
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const ShadowCSS = document.createElement("style");
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ShadowDOM.append(ShadowCSS);
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ShadowDOM.append(ShadowDiv);
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import App from "./app.tsx";
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App(ShadowDiv, Configure);
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TW.observe(TW.twind(Configure, TW.cssom(ShadowCSS)), ShadowDiv);
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</script>
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</body>
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</html>
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`;
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Deno.serve({ port: 3000 }, async(_req:Request) =>
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{
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const url:URL = new URL(_req.url);
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const type = Type(url.pathname);
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const fsPath = Deno.cwd()+url.pathname;
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console.log(`Request for "${url.pathname}"...`);
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try
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{
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let body:BodyInit;
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if(type == "application/javascript")
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{
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body = Transpiled.get(url.pathname);
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if(!body)
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{
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body = await Transpile(fsPath, url.pathname);
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console.log(` ...added to cache`);
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}
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else
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{
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console.log(` ...retrieved from cache`);
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}
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}
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else
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{
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if(url.pathname == "/")
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{
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body = Index;
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}
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else
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{
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let file = fsPath;
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if(url.pathname.endsWith("/"))
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{
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console.log(` ...implied index.html`);
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file += "index.html";
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}
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body = await Deno.readFile(file);
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}
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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 filesChanged:Map<string, string> = new Map();
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const ProcessFiles =debounce(async()=>
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{
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console.log("Files changed...")
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for await (const [file, action] of filesChanged)
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{
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const pathname = file.substring(Deno.cwd().length).replaceAll("\\", "/");
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const type = Type(pathname);
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console.log(pathname, type, action);
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if(type == "application/javascript")
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{
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if(action !== "remove")
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{
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await Transpile(file, pathname);
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console.log(` ...cached "${pathname}"`);
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}
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}
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}
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filesChanged.clear();
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}, 1000);
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const watcher = Deno.watchFs(Deno.cwd());
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for await (const event of watcher)
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{
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event.paths.forEach( path => filesChanged.set(path, event.kind) );
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ProcessFiles();
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}
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