From 4b03662cbc349f94d74989a8d500113d620d2445 Mon Sep 17 00:00:00 2001
From: Catink123 <qwerty.qaz120@gmail.com>
Date: Sat, 27 Aug 2022 18:58:06 +0300
Subject: [PATCH] Work around os.cpus() returning an empty array on unsupported
 platforms

`os.cpus()` can return empty arrays on platforms not officially supported by Node.js. Use 1 as a minimum.

See <https://github.com/nodejs/node/issues/38190>.

Co-authored-by: Mark Wubben <mark@novemberborn.net>
---
 lib/api.js | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/lib/api.js b/lib/api.js
index 1ebe27ce5..dcab0fab9 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -246,14 +246,16 @@ export default class Api extends Emittery {
 				}
 			}));
 
-			// Resolve the correct concurrency value.
-			let concurrency = Math.min(os.cpus().length, isCi ? 2 : Number.POSITIVE_INFINITY);
-			if (apiOptions.concurrency > 0) {
-				concurrency = apiOptions.concurrency;
-			}
-
+			// Resolve the correct concurrency value. Note that `os.cpus()` can return empty arrays on
+			// platforms not officially supported by Node.js. Use 1 as a minimum.
+			// See <https://github.com/nodejs/node/issues/38190>.
+			let concurrency = Math.max(1, os.cpus().length);
 			if (apiOptions.serial) {
 				concurrency = 1;
+			} else if (apiOptions.concurrency > 0) {
+				concurrency = apiOptions.concurrency;
+			} else if (isCi) {
+				concurrency = 2;
 			}
 
 			const deregisteredSharedWorkers = [];