Issue 5954 - Read-only properties cannot be assigned in strict mode in Edge

polyfill.js

Index: polyfill.js
===================================================================
--- a/polyfill.js
+++ b/polyfill.js
@@ -69,8 +69,15 @@
     let func = object[name];
     if (!func)
       return;
-
-    object[name] = function(...args)
+    let oldDescriptor = Object.getOwnPropertyDescriptor(object, name);
+    // Some descriptors like setUninstallURL are in fact accessor descriptors.
+    // We convert them to data descriptors.
+    let descriptor = {
+      enumerable: oldDescriptor.enumerable,
+      configurable: oldDescriptor.configurable,
+      writable: oldDescriptor.writable
+    };
+    descriptor.value = function(...args)
     {
       let callStack = new Error().stack;
 
@@ -111,6 +118,7 @@
         });
       });
     };
+    Object.defineProperty(object, name, descriptor);
   }
 
   function shouldWrapAPIs()