diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index c50667a3b986..8de69580cddb 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -366477,9 +366477,9 @@
      {}
     ]
    ],
-   "pointerevents/idlharness.html": [
+   "pointerevents/idlharness.window.js": [
     [
-     "/pointerevents/idlharness.html",
+     "/pointerevents/idlharness.window.html",
      {}
     ]
    ],
@@ -592899,7 +592899,7 @@
    "support"
   ],
   "interfaces/pointerevents.idl": [
-   "ef577f80b3480126c6d447fcaca219ae95bc8ec7",
+   "be4fdd5136343319cd3459cb669d033466e4013f",
    "support"
   ],
   "interfaces/pointerlock.idl": [
@@ -603834,8 +603834,8 @@
    "0ac911fd576d98e897b1aa19ec27236b20f92e43",
    "manual"
   ],
-  "pointerevents/idlharness.html": [
-   "90f3c1cd708d3760b3b8d30b73b39a2dbd5ab36f",
+  "pointerevents/idlharness.window.js": [
+   "aa9b11c2c844ab0af60d705a93d4fe27d37aa3b4",
    "testharness"
   ],
   "pointerevents/pointerevent_attributes_hoverable_pointers-manual.html": [
diff --git a/testing/web-platform/tests/interfaces/pointerevents.idl b/testing/web-platform/tests/interfaces/pointerevents.idl
index ef577f80b348..be4fdd513634 100644
--- a/testing/web-platform/tests/interfaces/pointerevents.idl
+++ b/testing/web-platform/tests/interfaces/pointerevents.idl
@@ -4,37 +4,38 @@
 // See: https://w3c.github.io/pointerevents/
 
 dictionary PointerEventInit : MouseEventInit {
-    long      pointerId = 0;
-    double    width = 1;
-    double    height = 1;
-    float     pressure = 0;
-    float     tangentialPressure = 0;
-    long      tiltX = 0;
-    long      tiltY = 0;
-    long      twist = 0;
+    long pointerId = 0;
+    double width = 1;
+    double height = 1;
+    float pressure = 0;
+    float tangentialPressure = 0;
+    long tiltX = 0;
+    long tiltY = 0;
+    long twist = 0;
     DOMString pointerType = "";
-    boolean   isPrimary = false;
+    boolean isPrimary = false;
 };
 
-[Constructor(DOMString type, optional PointerEventInit eventInitDict),
- Exposed=Window]
+[Constructor(DOMString type, optional PointerEventInit eventInitDict), Exposed=Window]
 interface PointerEvent : MouseEvent {
-    readonly attribute long      pointerId;
-    readonly attribute double    width;
-    readonly attribute double    height;
-    readonly attribute float     pressure;
-    readonly attribute float     tangentialPressure;
-    readonly attribute long      tiltX;
-    readonly attribute long      tiltY;
-    readonly attribute long      twist;
-    readonly attribute DOMString pointerType;
-    readonly attribute boolean   isPrimary;
+    readonly        attribute long pointerId;
+    readonly        attribute double width;
+    readonly        attribute double height;
+    readonly        attribute float pressure;
+    readonly        attribute float tangentialPressure;
+    readonly        attribute long tiltX;
+    readonly        attribute long tiltY;
+    readonly        attribute long twist;
+    readonly        attribute DOMString pointerType;
+    readonly        attribute boolean isPrimary;
 };
+
 partial interface Element {
-    void    setPointerCapture(long pointerId);
-    void    releasePointerCapture(long pointerId);
-    boolean hasPointerCapture(long pointerId);
+  void setPointerCapture(long pointerId);
+  void releasePointerCapture(long pointerId);
+  boolean hasPointerCapture(long pointerId);
 };
+
 partial interface GlobalEventHandlers {
     attribute EventHandler ongotpointercapture;
     attribute EventHandler onlostpointercapture;
@@ -47,6 +48,7 @@ partial interface GlobalEventHandlers {
     attribute EventHandler onpointerenter;
     attribute EventHandler onpointerleave;
 };
+
 partial interface Navigator {
-    readonly attribute long maxTouchPoints;
+    readonly  attribute long maxTouchPoints;
 };
diff --git a/testing/web-platform/tests/pointerevents/idlharness.html b/testing/web-platform/tests/pointerevents/idlharness.html
deleted file mode 100644
index 90f3c1cd708d..000000000000
--- a/testing/web-platform/tests/pointerevents/idlharness.html
+++ /dev/null
@@ -1,66 +0,0 @@
-<!doctype html>
-<meta charset=utf-8>
-<title>idlharness test</title>
-<script src=/resources/testharness.js></script>
-<script src=/resources/testharnessreport.js></script>
-<script src="/resources/WebIDLParser.js"></script>
-<script src="/resources/idlharness.js"></script>
-
-<pre id='untested_idl' style='display:none'>
-[Global=Window, Exposed=Window]
-interface Window {
-};
-
-[TreatNonObjectAsNull]
-callback EventHandlerNonNull = any (Event event);
-typedef EventHandlerNonNull? EventHandler;
-
-[NoInterfaceObject]
-interface GlobalEventHandlers {
-};
-Window implements GlobalEventHandlers;
-
-interface Navigator {
-};
-
-interface Element {
-};
-
-interface HTMLElement : Element {
-};
-HTMLElement implements GlobalEventHandlers;
-
-interface Document {
-};
-Document implements GlobalEventHandlers;
-
-interface MouseEvent {
-};
-</pre>
-
-<script>
-  promise_test(async function() {
-    const dom = await fetch('/interfaces/dom.idl').then(r => r.text());
-    const uievents = await fetch('/interfaces/uievents.idl').then(r => r.text());
-    const idl = await fetch('/interfaces/pointerevents.idl').then(r => r.text());
-
-    const idl_array = new IdlArray();
-    idl_array.add_untested_idls(dom, { only: ['EventInit'] });
-    idl_array.add_untested_idls(uievents, { only: [
-      'UIEventInit',
-      'MouseEventInit',
-      'EventModifierInit']
-    });
-    idl_array.add_untested_idls(
-        document.getElementById("untested_idl").textContent);
-    idl_array.add_idls(document.getElementById("idl").textContent);
-
-    // Note that I don't bother including Document here because there are still
-    // a bunch of differences between browsers around Document vs HTMLDocument.
-    idl_array.add_objects({
-      Window: ["window"],
-      Navigator: ["navigator"]
-    });
-    idl_array.test();
-  }, 'pointerevents interfaces');
-</script>
diff --git a/testing/web-platform/tests/pointerevents/idlharness.window.js b/testing/web-platform/tests/pointerevents/idlharness.window.js
new file mode 100644
index 000000000000..aa9b11c2c844
--- /dev/null
+++ b/testing/web-platform/tests/pointerevents/idlharness.window.js
@@ -0,0 +1,20 @@
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+'use strict';
+
+// https://w3c.github.io/pointerevents/
+
+idl_test(
+  ['pointerevents'],
+  ['uievents', 'dom', 'html'],
+  idl_array => {
+    idl_array.add_objects({
+      Element: ['document'],
+      Window: ['window'],
+      Navigator: ['navigator'],
+      PointerEvent: ['new PointerEvent("type")']
+    });
+  },
+  'pointerevents interfaces'
+);