Respond to code review comments

src/harness/fourslash.ts

@@ -167,6 +167,7 @@ module FourSlash {
                             settings.module = ts.ModuleKind.CommonJS;
                             break;
                           default:
+                            ts.Debug.assert(typeof globalOptions[prop] === "undefined" || globalOptions[prop] === "None");
                             settings.module = ts.ModuleKind.None;
                             break;
                         }

src/services/shims.ts

@@ -222,7 +222,7 @@ module ts {
                 throw Error("LanguageServiceShimHostAdapter.getCompilationSettings: empty compilationSettings");
                 return null;
             }
-            return <CompilerOptions>JSON.parse(<any>settingsJson);
+            return <CompilerOptions>JSON.parse(settingsJson);
         }
 
         public getScriptFileNames(): string[] {