Add module guard so the script still works in browsers. Attempt to ke…

…ep the old closure reference code as well.

javascript/diff_match_patch_uncompressed.js

@@ -1197,7 +1197,7 @@ diff_match_patch.prototype.diff_cleanupMerge = function(diffs) {
 
 /**
  * Rearrange diff boundaries that split Unicode surrogate pairs.
- * 
+ *
  * @param {!Array.<!diff_match_patch.Diff>} diffs Array of diff tuples.
  */
 diff_match_patch.prototype.diff_cleanupSplitSurrogates = function(diffs) {
@@ -1264,17 +1264,17 @@ diff_match_patch.prototype.digit16 = function(c) {
 
 /**
  * Decode URI-encoded string but allow for encoded surrogate halves
- * 
+ *
  * diff_match_patch needs this relaxation of the requirements because
  * not all libraries and versions produce valid URI strings in toDelta
  * and we don't want to crash this code when the input is valid input
  * but at the same time invalid utf-8
- * 
+ *
  * @example: decodeURI( 'abcd%3A %F0%9F%85%B0' ) = 'abcd: \ud83c\udd70'
  * @example: decodeURI( 'abcd%3A %ED%A0%BC' ) = 'abcd: \ud83c'
- * 
+ *
  * @cite: @mathiasbynens utf8.js at https://github.com/mathiasbynens/utf8.js
- * 
+ *
  * @param {String} text input string encoded by encodeURI() or equivalent
  * @return {String}
  */
@@ -2384,10 +2384,24 @@ diff_match_patch.patch_obj.prototype.toString = function() {
   return text.join('').replace(/%20/g, ' ');
 };
 
-
-// The following export code was added by @ForbesLindesay
-module.exports = diff_match_patch;
-module.exports['diff_match_patch'] = diff_match_patch;
-module.exports['DIFF_DELETE'] = DIFF_DELETE;
-module.exports['DIFF_INSERT'] = DIFF_INSERT;
-module.exports['DIFF_EQUAL'] = DIFF_EQUAL;
+// CLOSURE:begin_strip
+// Lines below here will not be included in the Closure-compatible library.
+if (typeof module === 'object') {
+  // The following export code was added by @ForbesLindesay
+  module.exports = diff_match_patch;
+  module.exports['diff_match_patch'] = diff_match_patch;
+  module.exports['DIFF_DELETE'] = DIFF_DELETE;
+  module.exports['DIFF_INSERT'] = DIFF_INSERT;
+  module.exports['DIFF_EQUAL'] = DIFF_EQUAL;
+} else {
+  // Export these global variables so that they survive Google's JS compiler.
+  // In a browser, 'this' will be 'window'.
+  /** @suppress {globalThis} */
+  this['diff_match_patch'] = diff_match_patch;
+  /** @suppress {globalThis} */
+  this['DIFF_DELETE'] = DIFF_DELETE;
+  /** @suppress {globalThis} */
+  this['DIFF_INSERT'] = DIFF_INSERT;
+  /** @suppress {globalThis} */
+  this['DIFF_EQUAL'] = DIFF_EQUAL;
+}