From 478f4a9012fc903c11e9b76fcfda424a2d55999a Mon Sep 17 00:00:00 2001
From: Catink123 <qwerty.qaz120@gmail.com>
Date: Thu, 25 Aug 2022 18:56:22 +0300
Subject: [PATCH 1/3] Accommodate for os.cpus() bug

---
 lib/api.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/api.js b/lib/api.js
index 1ebe27ce5..4636199cb 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -247,7 +247,8 @@ export default class Api extends Emittery {
 			}));
 
 			// Resolve the correct concurrency value.
-			let concurrency = Math.min(os.cpus().length, isCi ? 2 : Number.POSITIVE_INFINITY);
+			const cpuCount = os.cpus().length;
+			let concurrency = Math.min(cpuCount > 0 ? cpuCount : 1, isCi ? 2 : Number.POSITIVE_INFINITY);
 			if (apiOptions.concurrency > 0) {
 				concurrency = apiOptions.concurrency;
 			}

From 37d0d8a44d49a99f973d2b7c9107f0c5b37537d7 Mon Sep 17 00:00:00 2001
From: Mark Wubben <mark@novemberborn.net>
Date: Fri, 26 Aug 2022 14:47:31 +0200
Subject: [PATCH 2/3] Add comment and combine cases

---
 lib/api.js | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/lib/api.js b/lib/api.js
index 4636199cb..a6d9e57be 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -246,17 +246,18 @@ export default class Api extends Emittery {
 				}
 			}));
 
-			// Resolve the correct concurrency value.
-			const cpuCount = os.cpus().length;
-			let concurrency = Math.min(cpuCount > 0 ? cpuCount : 1, 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.
+			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 = [];
 
 			// Try and run each file, limited by `concurrency`.

From 811a94dbe6dd9815bf77873bb23856bdfa2fbab2 Mon Sep 17 00:00:00 2001
From: Mark Wubben <mark@novemberborn.net>
Date: Fri, 26 Aug 2022 16:28:26 +0200
Subject: [PATCH 3/3] Fix linting and link to Node.js issue

---
 lib/api.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/api.js b/lib/api.js
index a6d9e57be..dcab0fab9 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -248,16 +248,16 @@ export default class Api extends Emittery {
 
 			// 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
+				concurrency = 2;
 			}
 
-
 			const deregisteredSharedWorkers = [];
 
 			// Try and run each file, limited by `concurrency`.