Make phxWindow.addEventListener optional

Co-authored-by: Tomislav Markanovic <tomislav@platogo.com>

Author: majeed-platogo

assets/js/phoenix/socket.js

@@ -108,6 +108,10 @@ import Timer from "./timer"
  *       removeItem(keyName) { delete this.storage[keyName] }
  *       setItem(keyName, keyValue) { this.storage[keyName] = keyValue }
  *     }
+ * 
+ * @param {boolean} [opts.disableWindowEventListeners] - Boolean that determines if window event listeners should be active
+ *
+ * Defaults to false.
  *
 */
 export default class Socket {
@@ -137,7 +141,8 @@ export default class Socket {
       this.decode = this.defaultDecoder
     }
     let awaitingConnectionOnPageShow = null
-    if(phxWindow && phxWindow.addEventListener){
+    this.disableWindowEventListeners = opts.disableWindowEventListeners || false
+    if(!this.disableWindowEventListeners && phxWindow && phxWindow.addEventListener){
       phxWindow.addEventListener("pagehide", _e => {
         if(this.conn){
           this.disconnect()

assets/test/socket_test.js

@@ -39,6 +39,7 @@ describe("with transports", function (){
       expect(socket.longpollerTimeout).toBe(20000)
       expect(socket.heartbeatIntervalMs).toBe(30000)
       expect(socket.logger).toBeNull()
+      expect(socket.disableWindowEventListeners).toBe(false)
       expect(socket.binaryType).toBe("arraybuffer")
       expect(typeof socket.reconnectAfterMs).toBe("function")
     })
@@ -64,6 +65,7 @@ describe("with transports", function (){
         logger: customLogger,
         reconnectAfterMs: customReconnect,
         params: {one: "two"},
+        disableWindowEventListeners: true
       })
 
       expect(socket.timeout).toBe(40000)
@@ -72,6 +74,7 @@ describe("with transports", function (){
       expect(socket.transport).toBe(customTransport)
       expect(socket.logger).toBe(customLogger)
       expect(socket.params()).toEqual({one: "two"})
+      expect(socket.disableWindowEventListeners).toBe(true)
     })
 
     describe("with Websocket", function (){