Update checked-in dependencies

node_modules/diff/dist/diff.js

@@ -1,3 +1,40 @@
+/*!
+
+ diff v5.1.0
+
+Software License Agreement (BSD License)
+
+Copyright (c) 2009-2015, Kevin Decker <kpdecker@gmail.com>
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of Kevin Decker nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+@license
+*/
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
   typeof define === 'function' && define.amd ? define(['exports'], factory) :
@@ -38,6 +75,11 @@
           oldLen = oldString.length;
       var editLength = 1;
       var maxEditLength = newLen + oldLen;
+
+      if (options.maxEditLength) {
+        maxEditLength = Math.min(maxEditLength, options.maxEditLength);
+      }
+
       var bestPath = [{
         newPos: -1,
         components: []
@@ -102,15 +144,13 @@
         editLength++;
       } // Performs the length of edit iteration. Is a bit fugly as this has to support the
       // sync and async mode which is never fun. Loops over execEditLength until a value
-      // is produced.
+      // is produced, or until the edit length exceeds options.maxEditLength (if given),
+      // in which case it will return undefined.
 
 
       if (callback) {
         (function exec() {
           setTimeout(function () {
-            // This should not happen, but we want to be safe.
-
-            /* istanbul ignore next */
             if (editLength > maxEditLength) {
               return callback();
             }
@@ -928,6 +968,11 @@
     }
 
     var diff = diffLines(oldStr, newStr, options);
+
+    if (!diff) {
+      return;
+    }
+
     diff.push({
       value: '',
       lines: []