Merge pull request #32347 from glenjamin/watchpack

watchpack: startTime is an optional parameter

types/watchpack/index.d.ts

@@ -23,7 +23,7 @@ declare class Watchpack extends EventEmitter {
 
     constructor(options: Watchpack.WatchOptions);
 
-    watch(files: string[], directories: string[], startTime: number): void;
+    watch(files: string[], directories: string[], startTime?: number): void;
 
     close(): void;
 

types/watchpack/watchpack-tests.ts

@@ -2,6 +2,7 @@ import Watchpack = require('watchpack');
 const watch = new Watchpack({});
 
 watch.watch(['test.js'], ['lib/'], 1000);
+watch.watch(['test.js'], ['lib/']);
 
 let time: number;
 time = watch.getTimes()['test.js'];