99 lines
2.8 KiB
TypeScript
99 lines
2.8 KiB
TypeScript
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import * as MIME from "https://deno.land/std@0.180.0/media_types/mod.ts";
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import * as HTTP from "https://deno.land/std@0.177.0/http/server.ts";
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import * as SWCW from "https://esm.sh/@swc/wasm-web@1.3.62";
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type Configuration = {Proxy:string, Allow:string, Reset:string};
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type ConfigurationArgs = {Proxy?:string, Allow?:string, Reset?:string};
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let Configure:Configuration =
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{
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Proxy: "",
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Allow: "*",
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Reset: "/clear-cache"
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};
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export default (config:ConfigurationArgs)=> Configure = {...Configure, ...config};
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const TranspileConfig:SWCW.Options = {
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sourceMaps: true,
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minify: true,
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jsc:
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{
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minify:
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{
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compress: { unused: true },
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mangle: true
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},
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parser:
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{
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syntax: "typescript",
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tsx: true,
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},
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transform:
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{
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react: { runtime: "automatic" }
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}
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},
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}
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const TranspileCache:Map<string, string> = new Map();
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const TranspileFetch =async(inPath:string)=>
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{
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if(inPath.endsWith(".tsx") || inPath.endsWith(".jsx") || inPath.endsWith(".js") || inPath.endsWith(".mjs"))
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{
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const check = TranspileCache.get(inPath);
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if(check)
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{
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return check;
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}
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else
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{
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try
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{
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const resp = await fetch(Configure.Proxy + inPath);
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const text = await resp.text();
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const {code, map} = await SWCW.transform(text, TranspileConfig);
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TranspileCache.set(inPath, code);
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return code;
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}
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catch(e)
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{
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return null;
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}
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}
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}
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else
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{
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return false;
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}
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};
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await SWCW.default();
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HTTP.serve(async(req: Request)=>
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{
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const url:URL = new URL(req.url);
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if(url.pathname === Configure.Reset)
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{
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const size = TranspileCache.size;
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TranspileCache.clear();
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return new Response(`cache cleared (${size} items)`);
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}
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const lookup = await TranspileFetch(url.pathname);
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if(lookup === null)
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{
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// error
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return new Response(`error (see console)`, {status:404, headers:{"content-type":"application/javascript", "Access-Control-Allow-Origin": Configure.Allow, charset:"utf-8"}});
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}
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else if(lookup === false)
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{
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// not a javascript file
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const type = MIME.typeByExtension(url.pathname.substring(url.pathname.lastIndexOf("."))) || "text/html";
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const file = await fetch(Configure.Proxy + url.pathname);
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const text = await file.text();
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return new Response(text, {headers:{"content-type":type, "Access-Control-Allow-Origin":Configure.Allow, charset:"utf-8"}});
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}
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else
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{
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return new Response(lookup, {headers:{"content-type":"application/javascript", "Access-Control-Allow-Origin": Configure.Allow, charset:"utf-8"}});
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}
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});
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