reset etag with pathname only (#1418)

* reset etag with pathname only

* Update dev.ts

* Update dev.ts

Co-authored-by: Fred K. Schott <fkschott@gmail.com>

snowpack/src/commands/dev.ts

@@ -1153,29 +1153,31 @@ export async function startDevServer(commandOptions: CommandOptions): Promise<Sn
     res: http.ServerResponse,
     {handleError}: {handleError?: boolean} = {},
   ) {
-    const reqPath = req.url!;
+    const reqUrl = req.url!;
     // Check if a configured proxy matches the request.
-    const requestProxy = getRequestProxy(reqPath);
+    const requestProxy = getRequestProxy(reqUrl);
     if (requestProxy) {
       return requestProxy(req, res);
     }
     // Check if we can send back an optimized 304 response
     const quickETagCheck = req.headers['if-none-match'];
-    if (quickETagCheck && quickETagCheck === knownETags.get(reqPath)) {
+    if (quickETagCheck && quickETagCheck === knownETags.get(reqUrl)) {
       logger.debug(`optimized etag! sending 304...`);
       res.writeHead(304, {'Access-Control-Allow-Origin': '*'});
       res.end();
       return;
     }
     // Otherwise, load the file and respond if successful.
     try {
-      const result = await loadUrl(reqPath, {allowStale: true, encoding: null});
+      const result = await loadUrl(reqUrl, {allowStale: true, encoding: null});
       sendResponseFile(req, res, result);
       if (result.checkStale) {
         await result.checkStale();
       }
       if (result.contents) {
-        knownETags.set(reqPath, etag(result.contents, {weak: true}));
+        const tag = etag(result.contents, {weak: true});
+        const reqPath = decodeURI(url.parse(reqUrl).pathname!);
+        knownETags.set(reqPath, tag);
       }
       return;
     } catch (err) {