初始化代码

uniapp/uni-app/components/miniprogram_npm/widget-ui/event.ts

@@ -0,0 +1,15 @@
+import _EventEmitter from "eventemitter3";
+const emitter = new _EventEmitter();
+export default class EventEmitter {
+  public emit(event: string, data?: any) {
+    emitter.emit(event, data);
+  }
+  
+  public on(event: string, callback) {
+    emitter.on(event, callback);
+  }
+
+  public off(event: string, callback) {
+    emitter.off(event, callback);
+  }
+}