Expose EventEmitter class on BaseClient to be used by plugins

Plugins can't import EventEmitter class directly as that would increase
the bundle size of a plugin

src/common/lib/client/baseclient.ts

@@ -17,6 +17,7 @@ import { MsgPack } from 'common/types/msgpack';
 import { HTTPRequestImplementations } from 'platform/web/lib/http/http';
 import { FilteredSubscriptions } from './filteredsubscriptions';
 import type { LocalDevice } from 'plugins/push/pushactivation';
+import EventEmitter from '../util/eventemitter';
 
 type BatchResult<T> = API.BatchResult<T>;
 type BatchPublishSpec = API.BatchPublishSpec;
@@ -179,6 +180,7 @@ class BaseClient {
   Logger = Logger;
   Defaults = Defaults;
   Utils = Utils;
+  EventEmitter = EventEmitter;
 }
 
 export default BaseClient;

src/common/lib/client/modularplugins.ts

@@ -10,8 +10,8 @@ import {
   fromValuesArray as presenceMessagesFromValuesArray,
 } from '../types/presencemessage';
 import { TransportCtor } from '../transport/transport';
-import * as PushPlugin from 'plugins/push';
-import * as LiveObjectsPlugin from 'plugins/liveobjects';
+import type * as PushPlugin from 'plugins/push';
+import type * as LiveObjectsPlugin from 'plugins/liveobjects';
 
 export interface PresenceMessagePlugin {
   presenceMessageFromValues: typeof presenceMessageFromValues;