Use as browser check

Author: khorwood-openai

Diff for: lib/api.js

@@ -14,7 +14,7 @@ export class RealtimeAPI extends RealtimeEventHandler {
     this.apiKey = apiKey || null;
     this.debug = !!debug;
     this.ws = null;
-    if (globalThis.WebSocket && this.apiKey) {
+    if (globalThis.document && this.apiKey) {
       if (!dangerouslyAllowAPIKeyInBrowser) {
         throw new Error(
           `Can not provide API key in the browser without "dangerouslyAllowAPIKeyInBrowser" set to true`,
@@ -63,7 +63,7 @@ export class RealtimeAPI extends RealtimeEventHandler {
     if (this.isConnected()) {
       throw new Error(`Already connected`);
     }
-    if (globalThis.WebSocket) {
+    if (globalThis.document) {
       /**
        * Web browser
        */

Diff for: test/tests/browser.js

@@ -11,6 +11,12 @@ export async function run({ debug = false } = {}) {
     before(async () => {
       const WebSocket = (await import('websocket')).default.w3cwebsocket;
       globalThis.WebSocket = WebSocket;
+      globalThis.document = {};
+    });
+
+    after(async () => {
+      globalThis.WebSocket = void 0;
+      globalThis.document = void 0;
     });
 
     it('Should fail to instantiate the RealtimeClient when "dangerouslyAllowAPIKeyInBrowser" is not set', () => {

Diff for: test/tests/client.js

@@ -8,10 +8,6 @@ export async function run({ debug = false } = {}) {
     let client;
     let realtimeEvents = [];
 
-    before(async () => {
-      globalThis.WebSocket = void 0;
-    });
-
     it('Should instantiate the RealtimeClient', () => {
       client = new RealtimeClient({
         apiKey: process.env.OPENAI_API_KEY,