改变flv插件加载方式

packages/artplayer-plugin-flv/src/eventProxy.js

@@ -0,0 +1,17 @@
+export default class EventProxy {
+    constructor() {
+        this.destroyEvents = [];
+        this.proxy = this.proxy.bind(this);
+    }
+
+    proxy(target, name, callback, option = {}) {
+        target.addEventListener(name, callback, option);
+        this.destroyEvents.push(() => {
+            target.removeEventListener(name, callback, option);
+        });
+    }
+
+    destroy() {
+        this.destroyEvents.forEach(event => event());
+    }
+}