test: add a SharedArrayBuffer worker test

Author: codebytere

test/parallel/test-worker-no-sab.js

@@ -0,0 +1,17 @@
+// Flags: --no-harmony-sharedarraybuffer
+
+'use strict';
+
+const common = require('../common');
+const assert = require('assert');
+const { isMainThread, Worker } = require('worker_threads');
+
+// Regression test for https://github.com/nodejs/node/issues/39717.
+
+const w = new Worker(__filename);
+
+w.on('exit', common.mustCall((status) => {
+  assert.strictEqual(status, 2);
+}));
+
+if (!isMainThread) process.exit(2);