Make comment regex ungreedy to prevent Max call stack error in some c…

…ases

.travis.yml

@@ -4,4 +4,7 @@ node_js:
   - "0.12"
   - "4"
   - "6"
+  - "8"
+  - "10"
+  - "12"
   - "node"

index.js

@@ -5,14 +5,14 @@ var SafeBuffer = require('safe-buffer');
 
 Object.defineProperty(exports, 'commentRegex', {
   get: function getCommentRegex () {
-    return /^\s*\/(?:\/|\*)[@#]\s+sourceMappingURL=data:(?:application|text)\/json;(?:charset[:=]\S+?;)?base64,(?:.*)$/mg;
+    return /^\s*?\/(?:\/|\*?)[@#]\s+?sourceMappingURL=data:(?:application|text)\/json;(?:charset[:=]\S+?;)?base64,(?:.*?)$/mg;
   }
 });
 
 Object.defineProperty(exports, 'mapFileCommentRegex', {
   get: function getMapFileCommentRegex () {
     // Matches sourceMappingURL in either // or /* comment styles.
-    return /(?:\/\/[@#][ \t]+sourceMappingURL=([^\s'"`]+?)[ \t]*$)|(?:\/\*[@#][ \t]+sourceMappingURL=([^\*]+?)[ \t]*(?:\*\/){1}[ \t]*$)/mg;
+    return /(?:\/\/[@#][ \t]+?sourceMappingURL=([^\s'"`]+?)[ \t]*?$)|(?:\/\*[@#][ \t]+sourceMappingURL=([^*]+?)[ \t]*?(?:\*\/){1}[ \t]*?$)/mg;
   }
 });