upgrade dependencies

1 files changed, 15 insertions, 9 deletions

diff --git a/node_modules/source-map/lib/source-node.js b/node_modules/source-map/lib/source-node.js
index e927f6663..d196a53f8 100644
--- a/node_modules/source-map/lib/source-node.js
+++ b/node_modules/source-map/lib/source-node.js
@@ -60,13 +60,19 @@ SourceNode.fromStringWithSourceMap =
     // All even indices of this array are one line of the generated code,
     // while all odd indices are the newlines between two adjacent lines
     // (since `REGEX_NEWLINE` captures its match).
-    // Processed fragments are removed from this array, by calling `shiftNextLine`.
+    // Processed fragments are accessed by calling `shiftNextLine`.
     var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
+    var remainingLinesIndex = 0;
     var shiftNextLine = function() {
-      var lineContents = remainingLines.shift();
+      var lineContents = getNextLine();
       // The last line of a file might not have a newline.
-      var newLine = remainingLines.shift() || "";
+      var newLine = getNextLine() || "";
       return lineContents + newLine;
+
+      function getNextLine() {
+        return remainingLinesIndex < remainingLines.length ?
+            remainingLines[remainingLinesIndex++] : undefined;
+      }
     };
 
     // We need to remember the position of "remainingLines"
@@ -91,10 +97,10 @@ SourceNode.fromStringWithSourceMap =
           // There is no new line in between.
           // Associate the code between "lastGeneratedColumn" and
           // "mapping.generatedColumn" with "lastMapping"
-          var nextLine = remainingLines[0];
+          var nextLine = remainingLines[remainingLinesIndex];
           var code = nextLine.substr(0, mapping.generatedColumn -
                                         lastGeneratedColumn);
-          remainingLines[0] = nextLine.substr(mapping.generatedColumn -
+          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
                                               lastGeneratedColumn);
           lastGeneratedColumn = mapping.generatedColumn;
           addMappingWithCode(lastMapping, code);
@@ -111,21 +117,21 @@ SourceNode.fromStringWithSourceMap =
         lastGeneratedLine++;
       }
       if (lastGeneratedColumn < mapping.generatedColumn) {
-        var nextLine = remainingLines[0];
+        var nextLine = remainingLines[remainingLinesIndex];
         node.add(nextLine.substr(0, mapping.generatedColumn));
-        remainingLines[0] = nextLine.substr(mapping.generatedColumn);
+        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
         lastGeneratedColumn = mapping.generatedColumn;
       }
       lastMapping = mapping;
     }, this);
     // We have processed all mappings.
-    if (remainingLines.length > 0) {
+    if (remainingLinesIndex < remainingLines.length) {
       if (lastMapping) {
         // Associate the remaining code in the current line with "lastMapping"
         addMappingWithCode(lastMapping, shiftNextLine());
       }
       // and add the remaining lines without any mapping
-      node.add(remainingLines.join(""));
+      node.add(remainingLines.splice(remainingLinesIndex).join(""));
     }
 
     // Copy sourcesContent into SourceNode