Update framework

framework/event-bus/index.js

@@ -0,0 +1,44 @@
+export class EventBus {
+    constructor() {
+        this.events = new Map();
+    }
+    emit(id, data = {}) {
+        let ev = this.events.get(id);
+        if (!ev) {
+            let ev = new EventItem(id);
+            this.events.set(id, ev);
+            return;
+        }
+        ev.subscribers.forEach((subscriber) => {
+            subscriber(data);
+        });
+    }
+    subscribe(id, subscriber) {
+        let ev = this.events.get(id);
+        if (!ev) {
+            ev = new EventItem(id);
+            this.events.set(id, ev);
+        }
+        ev.subscribers.push(subscriber);
+    }
+    unsubscribe(id, subscriber) {
+        if (this.events.has(id)) {
+            let ev = this.events.get(id);
+            ev.subscribers = ev.subscribers.filter((fn) => fn !== subscriber);
+            if (ev.subscribers.length < 1) {
+                this.events.delete(id);
+            }
+        }
+    }
+    unsubscribeAll(id) {
+        if (this.events.has(id)) {
+            this.events.delete(id);
+        }
+    }
+}
+export class EventItem {
+    constructor(id) {
+        this.id = id;
+        this.subscribers = [];
+    }
+}