feat: event-bus: clear eventbus; clear each event.

Test/event-bus-test.js

@@ -7,31 +7,40 @@ const whyCallback1 = (...payload) => {
 }
 
 const whyCallback2 = (...payload) => {
-  console.log("whyCallback1:", payload)
+  console.log("whyCallback2:", payload)
 }
 
 const lileiCallback1 = (...payload) => {
   console.log("lileiCallback1:", payload)
 }
 
+const ztCallback1 = (...payload) => {
+  console.log('ztCallback1', payload)
+}
+
 eventBus.on("why", whyCallback1)
 eventBus.on("why", whyCallback2)
 eventBus.on('lilei', lileiCallback1)
 eventBus.once("why", (...payload) => {
   console.log("why once:", payload)
 })
+eventBus.on('zzt', ztCallback1)
 
 setTimeout(() => {
   eventBus.emit("why", "abc", "cba", "nba")
   eventBus.emit("lilei", "abc", "cba", "nba")
+  eventBus.emit("zzt", "abc", "cba", "nba")
 }, 1000);
 
 setTimeout(() => {
   eventBus.off("why", whyCallback1)
   eventBus.off("lilei", lileiCallback1)
+  eventBus.clear('zzt')
+  eventBus.clear()
 }, 2000);
 
 setTimeout(() => {
   eventBus.emit("why")
   eventBus.emit("lilei")
+  eventBus.emit('zzt')
 }, 3000);

src/event-bus.js

@@ -79,6 +79,17 @@ class HYEventBus {
       delete this.eventBus[eventName]
     }
   }
+
+  clear(...eventNames) {
+    if (!eventNames.length) {
+      this.eventBus = {}
+      return
+    }
+    if (eventNames.some(eventName => typeof eventName !== 'string')) {
+      throw new TypeError("the event name must be string type")
+    }
+    eventNames.forEach(eventName => delete this.eventBus[eventName])
+  }
 }
 
 module.exports = HYEventBus