feat(runtime): implement navigator.hardwareConcurrency (#11448)

This commit implements "navigator.hardwareConcurrency" API, which
supersedes "Deno.systemCpuInfo()" API (which was removed in this commit).

1 files changed, 6 insertions, 0 deletions

diff --git a/cli/tests/unit/navigator_test.ts b/cli/tests/unit/navigator_test.ts
new file mode 100644
index 000000000..10475d973
--- /dev/null
+++ b/cli/tests/unit/navigator_test.ts
@@ -0,0 +1,6 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+import { assert, unitTest } from "./test_util.ts";
+
+unitTest(function navigatorNumCpus(): void {
+  assert(navigator.hardwareConcurrency > 0);
+});