fix: update logic for URLs ending with '/'

.changeset/late-snails-argue.md

@@ -2,4 +2,4 @@
 "webpack-dev-middleware": major
 ---
 
-The `getFilenameFromUrl` function now returns an object with the found `filename` (or `undefined` if the file was not found) and throws an error if the URL cannot be processed. Additionally, the object contains the `extra` property with `stats` (file system stats) and `outputFileSystem` (output file system where file was found) properties.
+The `getFilenameFromUrl` function is now asynchronous, returning a Promise that resolves to the object with the found `filename` (or `undefined` if the file was not found) or throws an error if the URL cannot be processed. Additionally, the object contains the `extra` property with `stats` (file system stats) and `outputFileSystem` (output file system where file was found) properties.

README.md

@@ -460,20 +460,16 @@ const app = new express();
 app.use(instance);
 
 instance.waitUntilValid(() => {
-  let resolver;
-
-  try {
-    resolved = instance.getFilenameFromUrl("/bundle.js");
-  } catch (err) {
-    console.log(`Error: ${err}`);
-  }
-
-  if (!resolved) {
-    console.log("Not found");
-    return;
-  }
-
-  console.log(`Filename is ${filename}`);
+  instance
+    .getFilenameFromUrl("/bundle.js")
+    .then(() => {
+      if (filename) {
+        console.log(`Filename is ${filename}`);
+      }
+    })
+    .catch((err) => {
+      console.log(`Error: ${err}`);
+    });
 });
 ```
 

src/index.js

@@ -14,7 +14,7 @@ const noop = () => {};
 /** @typedef {import("webpack").Stats} Stats */
 /** @typedef {import("webpack").MultiStats} MultiStats */
 /** @typedef {import("fs").ReadStream} ReadStream */
-/** @typedef {import("./middleware").Extra} Extra */
+/** @typedef {import("./middleware").FilenameWithExtra} FilenameWithExtra */
 
 // eslint-disable-next-line jsdoc/reject-any-type
 /** @typedef {any} EXPECTED_ANY */
@@ -126,7 +126,7 @@ const noop = () => {};
 /**
  * @callback GetFilenameFromUrl
  * @param {string} url request URL
- * @returns {{ filename: string, extra: Extra } | undefined} a filename with additional information, or `undefined` if nothing is found
+ * @returns {Promise<FilenameWithExtra | undefined>} a filename with additional information, or `undefined` if nothing is found
  */
 
 /**