[DevTools] Fix more frontend compiler errors

third_party/WebKit/Source/devtools/front_end/sources/SourceMapNamesResolver.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 WebInspector.SourceMapNamesResolver = {};
 
 WebInspector.SourceMapNamesResolver._cachedMapSymbol = Symbol("cache");
 WebInspector.SourceMapNamesResolver._cachedPromiseSymbol = Symbol("cache");
 
 /**
@@ skipping 35 matching lines @@
             return new Map();
 
         var startLocation = scope.startLocation();
         var endLocation = scope.endLocation();
         var textRange = new WebInspector.TextRange(startLocation.lineNumber, startLocation.columnNumber, endLocation.lineNumber, endLocation.columnNumber);
 
         var scopeText = textRange.extract(content);
         var scopeStart = textRange.toSourceRange(content).offset;
         var prefix = "function fui";
         var root = acorn.parse(prefix + scopeText, {});
-        /** @type {!Array<!ESTree.Node>} */
+        /** @type {!Array<?ESTree.Node>} */

[lushnikov, 2016/03/04 22:49:18]

revert

[kozy, 2016/03/04 23:18:50]

Done.

         var identifiers = [];
         var functionDeclarationCounter = 0;
         var walker = new WebInspector.ESTreeWalker(beforeVisit, afterVisit);
 
         /**
          * @param {!ESTree.Node} node
          * @return {boolean}
          */
         function isFunction(node)
         {
             return node.type === "FunctionDeclaration" || node.type === "FunctionExpression";
         }
 
         /**
          * @param {!ESTree.Node} node
          */
         function beforeVisit(node)
         {
             if (isFunction(node))
                 functionDeclarationCounter++;
 
             if (functionDeclarationCounter > 1)
                 return;
 
             if (isFunction(node) && node.params)
                 identifiers.pushAll(node.params);
 
             if (node.type === "VariableDeclarator")
                 identifiers.push(node.id);

[lushnikov, 2016/03/04 22:49:18]

cast to !Estree.node

[kozy, 2016/03/04 23:18:50]

Done.

         }
 
         /**
          * @param {!ESTree.Node} node
          */
         function afterVisit(node)
         {
             if (isFunction(node))
                 functionDeclarationCounter--;
         }
@@ skipping 275 matching lines @@
     /**
      * @override
      * @param {function(?Array<!DebuggerAgent.CollectionEntry>)} callback
      */
     collectionEntries: function(callback)
     {
         this._object.collectionEntries(callback);
     },
 
     __proto__: WebInspector.RemoteObject.prototype
-}
+}