Fix debug namespaces

Summary: @​public
Have a top-level debug namespace: `ReactNativePackager`
And add a couple of debugs in the transformer. This is ground work for adding a verbose option.

Reviewed By: @DmitrySoshnikov

Differential Revision: D2489960

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

@@ -11,7 +11,7 @@
 const Activity = require('../../Activity');
 const AssetModule_DEPRECATED = require('../AssetModule_DEPRECATED');
 const Fastfs = require('../fastfs');
-const debug = require('debug')('ReactPackager:DependencyGraph');
+const debug = require('debug')('ReactNativePackager:DependencyGraph');
 const path = require('path');
 
 class DeprecatedAssetMap {

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

@@ -8,7 +8,7 @@
  */
 'use strict';
 
-const debug = require('debug')('ReactPackager:DependencyGraph');
+const debug = require('debug')('ReactNativePackager:DependencyGraph');
 const util = require('util');
 const path = require('path');
 const isAbsolutePath = require('absolute-path');

packager/react-packager/src/DependencyResolver/crawlers/node.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const Promise = require('promise');
-const debug = require('debug')('DependencyGraph');
+const debug = require('debug')('ReactNativePackager:DependencyGraph');
 const fs = require('fs');
 const path = require('path');
 

packager/react-packager/src/JSTransformer/index.js

@@ -14,6 +14,7 @@ const declareOpts = require('../lib/declareOpts');
 const fs = require('fs');
 const util = require('util');
 const workerFarm = require('worker-farm');
+const debug = require('debug')('ReactNativePackager:JStransformer');
 
 const readFile = Promise.denodeify(fs.readFile);
 
@@ -86,6 +87,8 @@ class Transformer {
       return Promise.reject(new Error('No transfrom module'));
     }
 
+    debug('transforming file', filePath);
+
     return this._cache.get(
       filePath,
       'transformedSource',
@@ -107,6 +110,8 @@ class Transformer {
               throw formatError(res.error, filePath);
             }
 
+            debug('done transforming file', filePath);
+
             return new ModuleTransport({
               code: res.code,
               map: res.map,

packager/react-packager/src/SocketInterface/SocketClient.js

@@ -11,7 +11,7 @@
 const Bundle = require('../Bundler/Bundle');
 const Promise = require('promise');
 const bser = require('bser');
-const debug = require('debug')('ReactPackager:SocketClient');
+const debug = require('debug')('ReactNativePackager:SocketClient');
 const fs = require('fs');
 const net = require('net');
 const path  = require('path');

packager/react-packager/src/SocketInterface/SocketServer.js

@@ -11,7 +11,7 @@
 const Promise = require('promise');
 const Server = require('../Server');
 const bser = require('bser');
-const debug = require('debug')('ReactPackager:SocketServer');
+const debug = require('debug')('ReactNativePackager:SocketServer');
 const fs = require('fs');
 const net = require('net');
 

packager/react-packager/src/SocketInterface/index.js

@@ -13,7 +13,7 @@ const SocketClient = require('./SocketClient');
 const SocketServer = require('./SocketServer');
 const _ = require('underscore');
 const crypto = require('crypto');
-const debug = require('debug')('ReactPackager:SocketInterface');
+const debug = require('debug')('ReactNativePackager:SocketInterface');
 const fs = require('fs');
 const net = require('net');
 const path = require('path');
@@ -90,7 +90,7 @@ function createServer(resolve, reject, options, sockPath) {
 
   // Enable server debugging by default since it's going to a log file.
   const env = _.clone(process.env);
-  env.DEBUG = 'ReactPackager:SocketServer';
+  env.DEBUG = 'ReactNativePackager:SocketServer';
 
   // We have to go through the main entry point to make sure
   // we go through the babel require hook.