Adding missing rejection if npm fails

src/taco-cli/cli/kit.ts

@@ -661,24 +661,20 @@ class Kit extends commands.TacoCommandBase {
      * Validates whether the version string passed is a valid Cordova version
      */
     private static validateCliVersion(version: string): Q.Promise<any> {
-        var deferred: Q.Deferred<any> = Q.defer<any>();
-
         if (!semver.valid(version)) {
             return Q.reject(errorHelper.get(TacoErrorCodes.ErrorInvalidVersion, version, "cordova"));
         }
 
         CordovaHelper.ensureCordovaVersionAcceptable(version);
         
-        NpmHelper.view("cordova", ["versions"])
+        return NpmHelper.view("cordova", ["versions"])
             .then(function(versions: string[]) {
                 if (versions.indexOf(version) !== -1) {
-                    deferred.resolve(version);
+                    return version;
                 } else {
-                    deferred.reject(errorHelper.get(TacoErrorCodes.ErrorInvalidVersion, version, "cordova"));
+                    throw errorHelper.get(TacoErrorCodes.ErrorInvalidVersion, version, "cordova");
                 }
             });
-
-        return deferred.promise;
     }
 
     /**

src/taco-utils/npmHelper.ts

@@ -49,6 +49,8 @@ module TacoUtility {
             npmProcess.on("exit", (code: number, signal: string) => {
                 if (code === 0) {
                     deferred.resolve([stdout, stderr]);
+                } else {
+                    deferred.reject(code);
                 }
             });