1 files changed, 5 insertions, 5 deletions
diff --git a/std/path/posix.ts b/std/path/posix.ts
index fca7f081b..afbc9303f 100644
--- a/std/path/posix.ts
+++ b/std/path/posix.ts
@@ -430,11 +430,11 @@ export function parse(path: string): ParsedPath {
 /** Converts a file URL to a path string.
  *
  *      fromFileUrl("file:///home/foo"); // "/home/foo"
- *
- * Note that non-file URLs are treated as file URLs and irrelevant components
- * are ignored.
  */
 export function fromFileUrl(url: string | URL): string {
-  return decodeURIComponent((url instanceof URL ? url : new URL(url)).pathname
-    .replace(/^\/*([A-Za-z]:)(\/|$)/, "$1/"));
+  url = url instanceof URL ? url : new URL(url);
+  if (url.protocol != "file:") {
+    throw new TypeError("Must be a file URL.");
+  }
+  return decodeURIComponent(url.pathname);
 }