diff --git a/workers/semantics/multiple-workers/005.html b/workers/semantics/multiple-workers/005.html
deleted file mode 100644
index d5e21ea527476b..00000000000000
--- a/workers/semantics/multiple-workers/005.html
+++ /dev/null
@@ -1,38 +0,0 @@
-<!--
-if (location.hash == '#1') {
-  var w2 = new SharedWorker('#2');
-  w2.port.onmessage = function(e) {
-    postMessage('1'+e.data);
-  }
-} else if (location.hash == '#2') {
-  onconnect = function(e) {
-    var port = e.ports[0];
-    var w3 = new Worker('#3');
-    w3.onmessage = function(e) {
-      port.postMessage('2'+e.data);
-    }
-  }
-} else {
-  postMessage('3');
-}
-
-/*
--->
-<!doctype html>
-<title>dedicated worker in shared worker in dedicated worker</title>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<div id=log></div>
-<script>
-async_test(function() {
-  var w1 = new Worker('#1');
-  w1.onmessage = this.step_func(function(e) {
-    assert_equals(e.data, '123');
-    this.done();
-  });
-  w1.onerror = this.unreached_func("error");
-});
-</script>
-<!--
-*/
-//-->
diff --git a/workers/semantics/multiple-workers/006-1.js b/workers/semantics/multiple-workers/006-1.js
deleted file mode 100644
index 6c1ed932321caa..00000000000000
--- a/workers/semantics/multiple-workers/006-1.js
+++ /dev/null
@@ -1,3 +0,0 @@
-  onconnect = function(e) {
-    e.ports[0].postMessage('3');
-  }
\ No newline at end of file
diff --git a/workers/semantics/multiple-workers/006.html b/workers/semantics/multiple-workers/006.html
deleted file mode 100644
index 7fbfd8e90f8014..00000000000000
--- a/workers/semantics/multiple-workers/006.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<!--
-if (location.hash == '#1') {
-  onconnect = function(e) {
-    var port = e.ports[0];
-    onerror = e => {
-      port.postMessage(String(e))
-    }
-    var w2 = new Worker('#2');
-    w2.onmessage = function(e) {
-      port.postMessage('1'+e.data);
-    }
-  }
-} else if (location.hash == '#2') {
-  var w3 = new SharedWorker('006-1.js');
-  w3.port.onmessage = function(e) {
-    postMessage('2'+e.data);
-  }
-}
-
-/*
--->
-<!doctype html>
-<title>shared worker in dedicated worker in shared worker</title>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<div id=log></div>
-<script>
-async_test(function() {
-  var w1 = new SharedWorker('#1');
-  w1.port.onmessage = this.step_func(function(e) {
-    assert_equals(e.data, '123');
-    this.done();
-  });
-  w1.onerror = this.unreached_func("error");
-});
-</script>
-<!--
-*/
-//-->
diff --git a/workers/semantics/multiple-workers/007.html b/workers/semantics/multiple-workers/007.html
deleted file mode 100644
index 5045759647bf6b..00000000000000
--- a/workers/semantics/multiple-workers/007.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!--
-if (location.hash == '#1') {
-  onconnect = function(e) {
-    var port = e.ports[0];
-    var w2 = new Worker('#2');
-    w2.onmessage = function(e) {
-      port.postMessage('1'+e.data);
-    }
-  }
-} else if (location.hash == '#2') {
-  var w3 = new SharedWorker('#3');
-  w3.port.onmessage = function(e) {
-    postMessage('2'+e.data);
-  }
-} else {
-  onconnect = function(e) {
-    e.ports[0].postMessage('3');
-  }
-}
-
-/*
--->
-<!doctype html>
-<title>shared worker in dedicated worker in shared worker</title>
-<meta name="timeout" content="long">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<div id=log></div>
-<script>
-async_test(function() {
-  var w1 = new SharedWorker('#1');
-  w1.port.onmessage = this.step_func(function(e) {
-    assert_equals(e.data, '123');
-    this.done();
-  });
-  w1.onerror = this.unreached_func("error");
-});
-</script>
-<!--
-*/
-//-->
diff --git a/workers/semantics/multiple-workers/exposure.any.js b/workers/semantics/multiple-workers/exposure.any.js
new file mode 100644
index 00000000000000..7e226a7333fb49
--- /dev/null
+++ b/workers/semantics/multiple-workers/exposure.any.js
@@ -0,0 +1,11 @@
+// META: global=window,worker
+
+test(() => {
+  const assert = "ServiceWorkerGlobalScope" in globalThis ? assert_equals : assert_not_equals;
+  assert(globalThis.Worker, undefined);
+}, "Worker exposure");
+
+test(() => {
+  const assert = globalThis.GLOBAL.isWindow() ? assert_not_equals : assert_equals;
+  assert(globalThis.SharedWorker, undefined);
+}, "SharedWorker exposure");
