Revert "chore: use constructor in examples/broadcast.ts"

This reverts commit da12f67.

README.md

@@ -64,7 +64,7 @@ function to create the relevant `BroadcastChannel` object, and then uses the
 `BroadcastChannel` API as usual.
 
 ```typescript
-import { WebSocketBroadcastChannel } from "https://deno.land/x/websocket_broadcastchannel/mod.ts";
+import { createBroadcastChannel } from "https://deno.land/x/websocket_broadcastchannel/mod.ts";
 
 const pid = Deno.pid;
 const pidLastDigit = pid % 10;
@@ -77,7 +77,7 @@ const log = (s: string, ...args: unknown[]) => {
 log("run this in multiple terminals on the same host, to see it work");
 
 log("starting...");
-const testChannel = new WebSocketBroadcastChannel("test");
+const testChannel = createBroadcastChannel("test");
 log("testChannel.constructor.name", testChannel.constructor.name);
 
 testChannel.onmessage = (event: MessageEvent<unknown>) => {

examples/broadcast.ts

@@ -1,5 +1,5 @@
 #!/usr/bin/env -S deno run --allow-net --watch
-import { WebSocketBroadcastChannel } from "../mod.ts";
+import { createBroadcastChannel } from "../mod.ts";
 
 const pid = Deno.pid;
 const pidLastDigit = pid % 10;
@@ -12,7 +12,7 @@ const log = (s: string, ...args: unknown[]) => {
 log("run this in multiple terminals on the same host, to see it work");
 
 log("starting...");
-const testChannel = new WebSocketBroadcastChannel("test");
+const testChannel = createBroadcastChannel("test");
 log("testChannel.constructor.name", testChannel.constructor.name);
 
 testChannel.onmessage = (event: MessageEvent<unknown>) => {

src/web-socket-broadcast-channel.ts

@@ -38,7 +38,7 @@ const log0: Logger = logger(import.meta.url);
 export class WebSocketBroadcastChannel extends EventTarget
   implements BroadcastChannelIsh, Disposable {
   readonly uuid: string = crypto.randomUUID();
-  onmessage: ((ev: MessageEvent) => void) | null = null;
+  onmessage: ((ev: Event) => void) | null = null;
   onmessageerror: ((ev: Event) => void) | null = null;
   private readonly log: Logger = log0.sub(WebSocketBroadcastChannel.name);
   private closeFuse = new OneTimeFuse("channel is already closed");
@@ -57,10 +57,7 @@ export class WebSocketBroadcastChannel extends EventTarget
     super();
     this.log.sub("constructor")(`name: ${s(name)}, url: ${s(url)}`);
     this.idUrlChannel = IdUrlChannel.of(IdUrl.of(url), name);
-    this.addEventListener(
-      "message",
-      (e: Event) => this.onmessage?.(e as MessageEvent),
-    );
+    this.addEventListener("message", (e: Event) => this.onmessage?.(e));
     this.addEventListener(
       "messageerror",
       (e: Event) => this.onmessageerror?.(e),