From ed9e99e946b5458946f341bbee9a004049c1a233 Mon Sep 17 00:00:00 2001
From: Jun Siang Cheah <git@jscheah.me>
Date: Sun, 28 Apr 2024 16:51:36 +0100
Subject: [PATCH] fix: fluid streaming was "pausing" when tab was not visible

---
 src/lib/apis/streaming/index.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lib/apis/streaming/index.ts b/src/lib/apis/streaming/index.ts
index 19e4d8fc7..aad42b2b6 100644
--- a/src/lib/apis/streaming/index.ts
+++ b/src/lib/apis/streaming/index.ts
@@ -73,7 +73,11 @@ async function* streamLargeDeltasAsRandomChunks(
 			const chunkSize = Math.min(Math.floor(Math.random() * 3) + 1, content.length);
 			const chunk = content.slice(0, chunkSize);
 			yield { done: false, value: chunk };
-			await sleep(5);
+			// Do not sleep if the tab is hidden
+			// Timers are throttled to 1s in hidden tabs
+			if (document?.visibilityState !== 'hidden') {
+				await sleep(5);
+			}
 			content = content.slice(chunkSize);
 		}
 	}