DevTools: Roll CodeMirror to 5.25.1

third_party/WebKit/Source/devtools/front_end/cm_modes/livescript.js

 // CodeMirror, copyright (c) by Marijn Haverbeke and others
 // Distributed under an MIT license: http://codemirror.net/LICENSE
 
 /**
  * Link to the project's GitHub page:
  * https://github.com/duralog/CodeMirror
  */
 
 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS
@@ skipping 32 matching lines @@
           }
         }
       }
       stream.next();
       return 'error';
     };
     var external = {
       startState: function(){
         return {
           next: 'start',
-          lastToken: null
+          lastToken: {style: null, indent: 0, content: ""}
         };
       },
       token: function(stream, state){
         while (stream.pos == stream.start)
           var style = tokenBase(stream, state);
         state.lastToken = {
           style: style,
           indent: stream.indentation(),
           content: stream.current()
         };
@@ skipping 207 matching lines @@
         }
       }
     } else if (typeof rr.regex === 'string') {
       Rules[idx].regex = new RegExp('^' + r.regex);
     }
   }
 
   CodeMirror.defineMIME('text/x-livescript', 'livescript');
 
 });