Added vulcanize under third_party/npm_modules

node_modules/vulcanize/node_modules/uglify-js/node_modules/source-map/lib/source-map/source-map-generator.js

Index: node_modules/vulcanize/node_modules/uglify-js/node_modules/source-map/lib/source-map/source-map-generator.js
diff --git a/node_modules/karma/node_modules/source-map/lib/source-map/source-map-generator.js b/node_modules/vulcanize/node_modules/uglify-js/node_modules/source-map/lib/source-map/source-map-generator.js
similarity index 90%
copy from node_modules/karma/node_modules/source-map/lib/source-map/source-map-generator.js
copy to node_modules/vulcanize/node_modules/uglify-js/node_modules/source-map/lib/source-map/source-map-generator.js
index 5387fa1d49a2467f37742de0130e4892d11f4b94..fb6d6c38cdd327299b9eedae7f01790e7e0c80e9 100644
--- a/node_modules/karma/node_modules/source-map/lib/source-map/source-map-generator.js
+++ b/node_modules/vulcanize/node_modules/uglify-js/node_modules/source-map/lib/source-map/source-map-generator.js
@@ -55,9 +55,9 @@ define(function (require, exports, module) {
           }
         };
 
-        if (mapping.source != null) {
+        if (mapping.source) {
           newMapping.source = mapping.source;
-          if (sourceRoot != null) {
+          if (sourceRoot) {
             newMapping.source = util.relative(sourceRoot, newMapping.source);
           }
 
@@ -66,7 +66,7 @@ define(function (require, exports, module) {
             column: mapping.originalColumn
           };
 
-          if (mapping.name != null) {
+          if (mapping.name) {
             newMapping.name = mapping.name;
           }
         }
@@ -75,7 +75,7 @@ define(function (require, exports, module) {
       });
       aSourceMapConsumer.sources.forEach(function (sourceFile) {
         var content = aSourceMapConsumer.sourceContentFor(sourceFile);
-        if (content != null) {
+        if (content) {
           generator.setSourceContent(sourceFile, content);
         }
       });
@@ -101,11 +101,11 @@ define(function (require, exports, module) {
 
       this._validateMapping(generated, original, source, name);
 
-      if (source != null && !this._sources.has(source)) {
+      if (source && !this._sources.has(source)) {
         this._sources.add(source);
       }
 
-      if (name != null && !this._names.has(name)) {
+      if (name && !this._names.has(name)) {
         this._names.add(name);
       }
 
@@ -125,18 +125,18 @@ define(function (require, exports, module) {
   SourceMapGenerator.prototype.setSourceContent =
     function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
       var source = aSourceFile;
-      if (this._sourceRoot != null) {
+      if (this._sourceRoot) {
         source = util.relative(this._sourceRoot, source);
       }
 
-      if (aSourceContent != null) {
+      if (aSourceContent !== null) {
         // Add the source content to the _sourcesContents map.
         // Create a new _sourcesContents map if the property is null.
         if (!this._sourcesContents) {
           this._sourcesContents = {};
         }
         this._sourcesContents[util.toSetString(source)] = aSourceContent;
-      } else if (this._sourcesContents) {
+      } else {
         // Remove the source file from the _sourcesContents map.
         // If the _sourcesContents map is empty, set the property to null.
         delete this._sourcesContents[util.toSetString(source)];
@@ -164,59 +164,60 @@ define(function (require, exports, module) {
    */
   SourceMapGenerator.prototype.applySourceMap =
     function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
-      var sourceFile = aSourceFile;
       // If aSourceFile is omitted, we will use the file property of the SourceMap
-      if (aSourceFile == null) {
-        if (aSourceMapConsumer.file == null) {
+      if (!aSourceFile) {
+        if (!aSourceMapConsumer.file) {
           throw new Error(
             'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
             'or the source map\'s "file" property. Both were omitted.'
           );
         }
-        sourceFile = aSourceMapConsumer.file;
+        aSourceFile = aSourceMapConsumer.file;
       }
       var sourceRoot = this._sourceRoot;
-      // Make "sourceFile" relative if an absolute Url is passed.
-      if (sourceRoot != null) {
-        sourceFile = util.relative(sourceRoot, sourceFile);
+      // Make "aSourceFile" relative if an absolute Url is passed.
+      if (sourceRoot) {
+        aSourceFile = util.relative(sourceRoot, aSourceFile);
       }
       // Applying the SourceMap can add and remove items from the sources and
       // the names array.
       var newSources = new ArraySet();
       var newNames = new ArraySet();
 
-      // Find mappings for the "sourceFile"
+      // Find mappings for the "aSourceFile"
       this._mappings.forEach(function (mapping) {
-        if (mapping.source === sourceFile && mapping.originalLine != null) {
+        if (mapping.source === aSourceFile && mapping.originalLine) {
           // Check if it can be mapped by the source map, then update the mapping.
           var original = aSourceMapConsumer.originalPositionFor({
             line: mapping.originalLine,
             column: mapping.originalColumn
           });
-          if (original.source != null) {
+          if (original.source !== null) {
             // Copy mapping
             mapping.source = original.source;
-            if (aSourceMapPath != null) {
+            if (aSourceMapPath) {
               mapping.source = util.join(aSourceMapPath, mapping.source)
             }
-            if (sourceRoot != null) {
+            if (sourceRoot) {
               mapping.source = util.relative(sourceRoot, mapping.source);
             }
             mapping.originalLine = original.line;
             mapping.originalColumn = original.column;
-            if (original.name != null) {
+            if (original.name !== null && mapping.name !== null) {
+              // Only use the identifier name if it's an identifier
+              // in both SourceMaps
               mapping.name = original.name;
             }
           }
         }
 
         var source = mapping.source;
-        if (source != null && !newSources.has(source)) {
+        if (source && !newSources.has(source)) {
           newSources.add(source);
         }
 
         var name = mapping.name;
-        if (name != null && !newNames.has(name)) {
+        if (name && !newNames.has(name)) {
           newNames.add(name);
         }
 
@@ -227,11 +228,11 @@ define(function (require, exports, module) {
       // Copy sourcesContents of applied map.
       aSourceMapConsumer.sources.forEach(function (sourceFile) {
         var content = aSourceMapConsumer.sourceContentFor(sourceFile);
-        if (content != null) {
-          if (aSourceMapPath != null) {
+        if (content) {
+          if (aSourceMapPath) {
             sourceFile = util.join(aSourceMapPath, sourceFile);
           }
-          if (sourceRoot != null) {
+          if (sourceRoot) {
             sourceFile = util.relative(sourceRoot, sourceFile);
           }
           this.setSourceContent(sourceFile, content);
@@ -322,7 +323,7 @@ define(function (require, exports, module) {
                                    - previousGeneratedColumn);
         previousGeneratedColumn = mapping.generatedColumn;
 
-        if (mapping.source != null) {
+        if (mapping.source) {
           result += base64VLQ.encode(this._sources.indexOf(mapping.source)
                                      - previousSource);
           previousSource = this._sources.indexOf(mapping.source);
@@ -336,7 +337,7 @@ define(function (require, exports, module) {
                                      - previousOriginalColumn);
           previousOriginalColumn = mapping.originalColumn;
 
-          if (mapping.name != null) {
+          if (mapping.name) {
             result += base64VLQ.encode(this._names.indexOf(mapping.name)
                                        - previousName);
             previousName = this._names.indexOf(mapping.name);
@@ -353,7 +354,7 @@ define(function (require, exports, module) {
         if (!this._sourcesContents) {
           return null;
         }
-        if (aSourceRoot != null) {
+        if (aSourceRoot) {
           source = util.relative(aSourceRoot, source);
         }
         var key = util.toSetString(source);
@@ -371,14 +372,12 @@ define(function (require, exports, module) {
     function SourceMapGenerator_toJSON() {
       var map = {
         version: this._version,
+        file: this._file,
         sources: this._sources.toArray(),
         names: this._names.toArray(),
         mappings: this._serializeMappings()
       };
-      if (this._file != null) {
-        map.file = this._file;
-      }
-      if (this._sourceRoot != null) {
+      if (this._sourceRoot) {
         map.sourceRoot = this._sourceRoot;
       }
       if (this._sourcesContents) {