Solve – the command npm exited with code 1

In this article, you will learn how to solve the command npm exited with code 1 error.

In order to solve the error you can follow the steps below:

Make the changes in in the .csproj file like below:

npm run build -- --prod // change this command

to

npm run build --prod

Now, Open Project folder and Update project angular-cli with this CMD command:

npm install --save-dev @angular/cli@latest

and finally, Update visual studio NodeJS and npm by navigating to following settings.

Tools > Options > Projects and Solutions > Web Package Management > External
Web Tools

If above solution doesn’t solve the issue. You can navigate to Visual Studio -> Tools -> Options -> Projects and Solutions -> Build and Run -> MSBuild project build output verbosity. Change it to Detailed.

Then, when you try to debug the project, in the Output window, You will get the Real cause of the error.