Prefer globalThis over window

https://sonarcloud.io/organizations/matrix-org/rules?open=typescript%3AS7764&rule_key=typescript%3AS7764

Author: AndrewFerr

src/ClientWidgetApi.ts

@@ -175,7 +175,7 @@ export class ClientWidgetApi extends EventEmitter {
         if (!driver) {
             throw new Error("Invalid driver");
         }
-        this.transport = new PostmessageTransport(WidgetApiDirection.ToWidget, widget.id, iframe.contentWindow, window);
+        this.transport = new PostmessageTransport(WidgetApiDirection.ToWidget, widget.id, iframe.contentWindow, globalThis);
         this.transport.targetOrigin = widget.origin;
         this.transport.on("message", this.handleMessage.bind(this));
 

src/WidgetApi.ts

@@ -147,10 +147,10 @@ export class WidgetApi extends EventEmitter {
         private clientOrigin: string | null = null,
     ) {
         super();
-        if (!window.parent) {
+        if (!globalThis.parent) {
             throw new Error("No parent window. This widget doesn't appear to be embedded properly.");
         }
-        this.transport = new PostmessageTransport(WidgetApiDirection.FromWidget, widgetId, window.parent, window);
+        this.transport = new PostmessageTransport(WidgetApiDirection.FromWidget, widgetId, globalThis.parent, globalThis);
         this.transport.targetOrigin = clientOrigin;
         this.transport.on("message", this.handleMessage.bind(this));
     }

src/transport/PostmessageTransport.ts

@@ -60,8 +60,8 @@ export class PostmessageTransport extends EventEmitter implements ITransport {
     public constructor(
         private sendDirection: WidgetApiDirection,
         private initialWidgetId: string | null,
-        private transportWindow: Window,
-        private inboundWindow: Window,
+        private transportWindow: Window | typeof globalThis,
+        private inboundWindow: Window | typeof globalThis,
     ) {
         super();
         this._widgetId = initialWidgetId;