From ef2156e41bd08919a64a799e6b9bcdc5a3f99e3a Mon Sep 17 00:00:00 2001
From: Chris Swithinbank <swithinbank@gmail.com>
Date: Tue, 5 Mar 2024 11:00:06 +0100
Subject: [PATCH] Fix temporary file conflicts

---
 packages/db/src/core/load-file.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/db/src/core/load-file.ts b/packages/db/src/core/load-file.ts
index 7150d3183c..b6500118f0 100644
--- a/packages/db/src/core/load-file.ts
+++ b/packages/db/src/core/load-file.ts
@@ -182,7 +182,7 @@ export async function importBundledFile({
 	root: URL;
 }): Promise<{ default?: unknown }> {
 	// Write it to disk, load it with native Node ESM, then delete the file.
-	const tmpFileUrl = new URL(`./db.timestamp-${Date.now()}.mjs`, root);
+	const tmpFileUrl = tempUrl(root);
 	await writeFile(tmpFileUrl, code, { encoding: 'utf8' });
 	try {
 		return await import(/* @vite-ignore */ tmpFileUrl.pathname);
@@ -194,3 +194,9 @@ export async function importBundledFile({
 		}
 	}
 }
+
+/** Get a unique temporary file URL. Combines timestamp and a random ID to avoid conflicts. */
+function tempUrl(root: URL) {
+	const uuid = Math.random().toFixed(10).slice(2);
+	return new URL(`./db.timestamp-${Date.now()}-${uuid}.mjs`, root);
+}