From 778bd735e29882f18f42f8994547532106cab5a6 Mon Sep 17 00:00:00 2001
From: Pooya Parsa <pooya@pi0.io>
Date: Wed, 21 Feb 2024 14:51:03 +0100
Subject: [PATCH] fix(resolver): strictly check input

---
 src/resolve.ts | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/resolve.ts b/src/resolve.ts
index b6b7be8..b7a419a 100644
--- a/src/resolve.ts
+++ b/src/resolve.ts
@@ -37,7 +37,15 @@ function _tryModuleResolve(
   }
 }
 
-function _resolve(id: string, options: ResolveOptions = {}): string {
+function _resolve(id: string | URL, options: ResolveOptions = {}): string {
+  if (typeof id !== "string") {
+    if (id instanceof URL) {
+      id = fileURLToPath(id);
+    } else {
+      throw new TypeError("input must be a `string` or `URL`");
+    }
+  }
+
   // Skip if already has a protocol
   if (/(node|data|http|https):/.test(id)) {
     return id;
@@ -49,7 +57,7 @@ function _resolve(id: string, options: ResolveOptions = {}): string {
   }
 
   // Enable fast path for file urls
-  if (id.startsWith("file:")) {
+  if (id.startsWith("file://")) {
     id = fileURLToPath(id);
   }