Is there any way to check existence of a path in S3 bucket using AWS SDK for Node.js?

I want to check whether there exist a path (e.g. /myTest) in my bucket or not. The only way that I can handle it is that try to find whether there exist an object in my bucket that its key matches the path+'\/?.*' regex.

AWS SDK for javascript has the function getObject that in its params gets an string for the key param. But it seems that the value of this parameter could not accept regex. So I'm not sure whether there is any way to check the existence of a path in S3 bucket.

via user3070752