From c60abdc3494e494c44c6a2a489e9583ac634577e Mon Sep 17 00:00:00 2001
From: Hornwitser <github@hornwitser.no>
Date: Fri, 17 Feb 2023 23:41:50 +0100
Subject: [PATCH] Call fsync on patching saves

Similar to 1b2a20c call fsync on the newly written patched save before
renaming it to prevent data loss in the event of a system crash.
---
 packages/lib/factorio/patch.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/lib/factorio/patch.js b/packages/lib/factorio/patch.js
index 7f92232f..8e0c6a0f 100644
--- a/packages/lib/factorio/patch.js
+++ b/packages/lib/factorio/patch.js
@@ -251,8 +251,14 @@ async function patch(savePath, modules) {
 	// Write back the save
 	let tempSavePath = `${savePath}.tmp`;
 	let stream = zip.generateNodeStream({ compression: "DEFLATE" });
-	let pipe = stream.pipe(fs.createWriteStream(tempSavePath));
-	await events.once(pipe, "finish");
+	let fd = await fs.open(tempSavePath, "w");
+	try {
+		let pipe = stream.pipe(fs.createWriteStream("", { fd, autoClose: false }));
+		await events.once(pipe, "finish");
+		await fs.fsync(fd);
+	} finally {
+		await fs.close(fd);
+	}
 	await fs.rename(tempSavePath, savePath);
 }