diff --git a/ElectronNET.CLI/Commands/AddCommand.cs b/ElectronNET.CLI/Commands/AddCommand.cs
index f93ea3f..7c12ca7 100644
--- a/ElectronNET.CLI/Commands/AddCommand.cs
+++ b/ElectronNET.CLI/Commands/AddCommand.cs
@@ -68,6 +68,10 @@ namespace ElectronNET.CLI.Commands
                 EmbeddedFileHelper.DeployEmbeddedFile(targetFilePath, "package.json", "ElectronHostHook.");
                 EmbeddedFileHelper.DeployEmbeddedFile(targetFilePath, "tsconfig.json", "ElectronHostHook.");
 
+                // npm for typescript compiler etc.
+                Console.WriteLine("Start npm install...");
+                ProcessHelper.CmdExecute("npm install", targetFilePath);
+
                 // search .csproj
                 Console.WriteLine($"Search your .csproj to add configure CopyToPublishDirectory to 'Never'");
                 var projectFile = Directory.EnumerateFiles(currentDirectory, "*.csproj", SearchOption.TopDirectoryOnly).FirstOrDefault();
diff --git a/ElectronNET.CLI/Commands/BuildCommand.cs b/ElectronNET.CLI/Commands/BuildCommand.cs
index 9da0d63..575e3dd 100644
--- a/ElectronNET.CLI/Commands/BuildCommand.cs
+++ b/ElectronNET.CLI/Commands/BuildCommand.cs
@@ -16,7 +16,7 @@ namespace ElectronNET.CLI.Commands
         public static string COMMAND_ARGUMENTS = "Needed: '/target' with params 'win/osx/linux' to build for a typical app or use 'custom' and specify .NET Core build config & electron build config" + Environment.NewLine +
                                                  " for custom target, check .NET Core RID Catalog and Electron build target/" + Environment.NewLine +
                                                  " e.g. '/target win' or '/target custom \"win7-x86;win32\"'" + Environment.NewLine +
-                                                 "Optional: '/dotnet-configuration' with the desired .NET Core build config e.g. release or debug. Default = Release" + Environment.NewLine + 
+                                                 "Optional: '/dotnet-configuration' with the desired .NET Core build config e.g. release or debug. Default = Release" + Environment.NewLine +
                                                  "Optional: '/electron-arch' to specify the resulting electron processor architecture (e.g. ia86 for x86 builds). Be aware to use the '/target custom' param as well!" + Environment.NewLine +
                                                  "Optional: '/electron-params' specify any other valid parameter, which will be routed to the electron-packager." + Environment.NewLine +
                                                  "Full example for a 32bit debug build with electron prune: build /target custom win7-x86;win32 /dotnet-configuration Debug /electron-arch ia32  /electron-params \"--prune=true \"";
@@ -86,32 +86,26 @@ namespace ElectronNET.CLI.Commands
 
                 DeployEmbeddedElectronFiles.Do(tempPath);
 
-                var checkForNodeModulesDirPath = Path.Combine(tempPath, "node_modules");
+                var nodeModulesDirPath = Path.Combine(tempPath, "node_modules");
 
-                if (Directory.Exists(checkForNodeModulesDirPath) == false)
+
+                Console.WriteLine("node_modules missing in: " + checkForNodeModulesDirPath);
+
+                Console.WriteLine("Start npm install...");
+                ProcessHelper.CmdExecute("npm install", tempPath);
+
+                Console.WriteLine("Start npm install electron-packager...");
+
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
                 {
-                    Console.WriteLine("node_modules missing in: " + checkForNodeModulesDirPath);
-
-                    Console.WriteLine("Start npm install...");
-                    ProcessHelper.CmdExecute("npm install", tempPath);
-
-                    Console.WriteLine("Start npm install electron-packager...");
-
-                    if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-                    {
-                        // Works proper on Windows... 
-                        ProcessHelper.CmdExecute("npm install electron-packager --global", tempPath);
-                    }
-                    else
-                    {
-                        // ToDo: find another solution or document it proper
-                        // GH Issue https://github.com/electron-userland/electron-prebuilt/issues/48
-                        Console.WriteLine("Electron Packager - make sure you invoke 'sudo npm install electron-packager --global' at " + tempPath + " manually. Sry.");
-                    }
+                    // Works proper on Windows... 
+                    ProcessHelper.CmdExecute("npm install electron-packager --global", tempPath);
                 }
                 else
                 {
-                    Console.WriteLine("Skip npm install, because node_modules directory exists in: " + checkForNodeModulesDirPath);
+                    // ToDo: find another solution or document it proper
+                    // GH Issue https://github.com/electron-userland/electron-prebuilt/issues/48
+                    Console.WriteLine("Electron Packager - make sure you invoke 'sudo npm install electron-packager --global' at " + tempPath + " manually. Sry.");
                 }
 
                 Console.WriteLine("ElectronHostHook handling started...");
diff --git a/ElectronNET.CLI/Commands/StartElectronCommand.cs b/ElectronNET.CLI/Commands/StartElectronCommand.cs
index 93e8510..8e69982 100644
--- a/ElectronNET.CLI/Commands/StartElectronCommand.cs
+++ b/ElectronNET.CLI/Commands/StartElectronCommand.cs
@@ -61,19 +61,12 @@ namespace ElectronNET.CLI.Commands
 
                 DeployEmbeddedElectronFiles.Do(tempPath);
 
-                var checkForNodeModulesDirPath = Path.Combine(tempPath, "node_modules");
+                var nodeModulesDirPath = Path.Combine(tempPath, "node_modules");
 
-                if (Directory.Exists(checkForNodeModulesDirPath) == false)
-                {
-                    Console.WriteLine("node_modules missing in: " + checkForNodeModulesDirPath);
+                Console.WriteLine("node_modules missing in: " + nodeModulesDirPath);
 
-                    Console.WriteLine("Start npm install...");
-                    ProcessHelper.CmdExecute("npm install", tempPath);
-                }
-                else
-                {
-                    Console.WriteLine("Skip npm install, because node_modules directory exists in: " + checkForNodeModulesDirPath);
-                }
+                Console.WriteLine("Start npm install...");
+                ProcessHelper.CmdExecute("npm install", tempPath);
 
                 Console.WriteLine("ElectronHostHook handling started...");
 
@@ -111,6 +104,6 @@ namespace ElectronNET.CLI.Commands
             });
         }
 
-        
+
     }
 }