Client fixes

Summary:
Event emitter was typed any. Therefore, Client extended any and thing went south.
removing the explicit any type and fixing flow errors.

Reviewed By: jknoxville

Differential Revision: D15987630

fbshipit-source-id: 9456149d46f839d9579fcc2671ab2a82935fc23a

src/Client.js

@@ -22,7 +22,7 @@ import {default as isProduction} from './utils/isProduction.js';
 import {registerPlugins} from './reducers/plugins';
 import createTableNativePlugin from './plugins/TableNativePlugin';
 
-const EventEmitter = (require('events'): any);
+const EventEmitter = require('events');
 const invariant = require('invariant');
 
 type Plugins = Array<string>;
@@ -196,9 +196,6 @@ export default class Client extends EventEmitter {
     );
   }
 
-  on: ((event: 'plugins-change', callback: () => void) => void) &
-    ((event: 'close', callback: () => void) => void);
-
   app: App;
   connected: boolean;
   id: string;
@@ -211,7 +208,8 @@ export default class Client extends EventEmitter {
   store: Store;
   activePlugins: Set<string>;
   device: Promise<BaseDevice>;
-
+  logger: Logger;
+  lastSeenDeviceList: Array<BaseDevice>;
   broadcastCallbacks: Map<?string, Map<string, Set<Function>>>;
 
   requestCallbacks: Map<

src/dispatcher/tracking.js

@@ -11,6 +11,7 @@ import {performance} from 'perf_hooks';
 
 import type {Store} from '../reducers/index.js';
 import type {Logger} from '../fb-interfaces/Logger.js';
+import type Client from '../Client';
 
 export default (store: Store, logger: Logger) => {
   let droppedFrames: number = 0;

src/plugin.js

@@ -156,6 +156,7 @@ export class FlipperDevicePlugin<S = *, A = *, P = *> extends FlipperBasePlugin<
 
   constructor(props: Props<P>) {
     super(props);
+    // $FlowFixMe props.target will be instance of Device
     this.device = props.target;
   }
 
@@ -203,8 +204,8 @@ export class FlipperPlugin<S = *, A = *, P = *> extends FlipperBasePlugin<
   client: PluginClient;
   realClient: Client;
 
-  getDevice(): ?BaseDevice {
-    return this.realClient.getDevice();
+  getDevice(): Promise<BaseDevice> {
+    return this.realClient.device;
   }
 
   getAndroidDevice(): AndroidDevice {