Incorrect $util.isNullOrEmpty check in appsynce-emulator

[cyberwombat]

Both of these methods return the opposite of expected in lib/util.js

isNullOrEmpty(value) {
    return !!value; // This checks that its NOT null
},
isNullOrBlank(value) {
    return !!value;  // Same here
},

[cbaron]

@cyberwombat -- good catch. If you have the time, please submit a PR and we can merge this into master.

Also, this package has been incorporated into AWS's Amplify. If you're working on a new project, I highly suggest utilizing Amplify instead of this deprecated package.

[cyberwombat]

@cbaron - am actually extending it to add pipeline for use in serverless offline. I looked at amplify but don't see how I can use it as a serverless offline emulator?

[cbaron]

Check out this post: https://aws.amazon.com/blogs/aws/new-local-mocking-and-testing-with-the-amplify-cli/

Let me know if I can help, but also fee free to reach out to the Amplify team on Github!