Skip file removal on HMR interface

Summary:
public

We're not planning to accept file removals in the short term on the HMR interface so lets bail when a file is removed (before this this we were throwing when trying to get the shallow dependencies).

Reviewed By: yungsters

Differential Revision: D2810534

fb-gh-sync-id: f2733382f4a2619e22bdf1163aa4180694fff9f8

react-packager/src/Bundler/index.js

@@ -320,6 +320,10 @@ class Bundler {
     return this._resolver.getShallowDependencies(entryFile);
   }
 
+  stat(filePath) {
+    return this._resolver.stat(filePath);
+  }
+
   getModuleForPath(entryFile) {
     return this._resolver.getModuleForPath(entryFile);
   }

react-packager/src/DependencyResolver/DependencyGraph/index.js

@@ -145,6 +145,10 @@ class DependencyGraph {
     return this._moduleCache.getModule(entryPath).getDependencies();
   }
 
+  stat(filePath) {
+    return this._fastfs.stat(filePath);
+  }
+
   /**
    * Returns the module object for the given path.
    */

react-packager/src/Resolver/index.js

@@ -105,6 +105,10 @@ class Resolver {
     return this._depGraph.getShallowDependencies(entryFile);
   }
 
+  stat(filePath) {
+    return this._depGraph.stat(filePath);
+  }
+
   getModuleForPath(entryFile) {
     return this._depGraph.getModuleForPath(entryFile);
   }

react-packager/src/Server/index.js

@@ -184,7 +184,7 @@ class Server {
       // updates. Instead, send the HMR updates right away and once that
       // finishes, invoke any other file change listener.
       if (this._hmrFileChangeListener) {
-        this._hmrFileChangeListener(filePath);
+        this._hmrFileChangeListener(filePath, this._bundler.stat(filePath));
         return;
       }