1 files changed, 34 insertions, 0 deletions
diff --git a/testing/web-platform/tests/workers/modules/resources/nested-dynamic-import-worker.js b/testing/web-platform/tests/workers/modules/resources/nested-dynamic-import-worker.js
new file mode 100644
index 0000000000..00da43c5f0
--- /dev/null
+++ b/testing/web-platform/tests/workers/modules/resources/nested-dynamic-import-worker.js
@@ -0,0 +1,34 @@
+// This script is meant to be imported by a module worker. It receives a
+// message from the worker and responds with the list of imported modules.
+
+const sourcePromise = new Promise(resolve => {
+  if ('DedicatedWorkerGlobalScope' in self &&
+      self instanceof DedicatedWorkerGlobalScope) {
+    self.onmessage = e => {
+      resolve(e.target);
+    };
+  } else if (
+      'SharedWorkerGlobalScope' in self &&
+      self instanceof SharedWorkerGlobalScope) {
+    self.onconnect = e => {
+      resolve(e.ports[0]);
+    };
+  } else if (
+      'ServiceWorkerGlobalScope' in self &&
+      self instanceof ServiceWorkerGlobalScope) {
+    self.onmessage = e => {
+      resolve(e.source);
+    };
+  }
+});
+
+const importedModulesPromise =
+  import('./export-on-dynamic-import-script.js')
+    .then(module => module.ready)
+    .then(importedModules => importedModules)
+    .catch(error => `Failed to do dynamic import: ${error}`);
+
+Promise.all([sourcePromise, importedModulesPromise]).then(results => {
+  const [source, importedModules] = results;
+  source.postMessage(importedModules);
+});