fix: Emitter: Created events method (#311)

Author: ggazzo

packages/emitter/README.md

@@ -39,6 +39,7 @@ yarn add @rocket.chat/emitter
 -   [Handler](#handler)
 -   [IEmitter](#iemitter)
 -   [Emitter](#emitter)
+    -   [events](#events)
     -   [has](#has)
         -   [Parameters](#parameters)
     -   [on](#on)
@@ -64,6 +65,12 @@ Type: function (event: T): void
 
 The event emitter class.
 
+#### events
+
+Returns the whole EventType list
+
+Returns **[Array](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array)<[EventType](#eventtype)>** 
+
 #### has
 
 Returns `true` if this emmiter has a listener attached to the `key` event type

packages/emitter/docs/emitter.emitter.events.md

@@ -0,0 +1,17 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [@rocket.chat/emitter](./emitter.md) &gt; [Emitter](./emitter.emitter.md) &gt; [events](./emitter.emitter.events.md)
+
+## Emitter.events() method
+
+Returns the whole EventType list
+
+<b>Signature:</b>
+
+```typescript
+events(): EventType[];
+```
+<b>Returns:</b>
+
+[EventType](./emitter.eventtype.md)<!-- -->\[\]
+

packages/emitter/docs/emitter.emitter.md

@@ -18,6 +18,7 @@ export declare class Emitter implements IEmitter
 |  Method | Modifiers | Description |
 |  --- | --- | --- |
 |  [emit(type, e)](./emitter.emitter.emit.md) |  | Calls each of the handlers registered for the event of <code>type</code> type, in the order they were registered, passing the supplied argument <code>e</code> to each. |
+|  [events()](./emitter.emitter.events.md) |  | Returns the whole EventType list |
 |  [has(key)](./emitter.emitter.has.md) |  | Returns <code>true</code> if this emmiter has a listener attached to the <code>key</code> event type |
 |  [off(type, handler)](./emitter.emitter.off.md) |  | Removes the specified <code>handler</code> from the list of handlers of the event of the <code>type</code> type |
 |  [on(type, handler)](./emitter.emitter.on.md) |  | Adds the <code>handler</code> function to listen events of the <code>type</code> type. |

packages/emitter/src/index.ts

@@ -36,6 +36,13 @@ export class Emitter implements IEmitter {
 
   private [once] = new WeakMap<Handler, number>();
 
+  /**
+   * Returns the whole EventType list
+   */
+  events() : EventType[] {
+    return Array.from(this[evts].keys());
+  }
+
   /**
    * Returns `true` if this emmiter has a listener attached to the `key` event type
    */