Debug logs

**Is your feature request related to a problem? Please describe.**
This is related to #12. Because the error messages at times are cryptic as things get fixed related to that issue; it might also be good to have debug logs available when needed so one can trace through the problem.

**Describe the solution you'd like**
I see loggers in the examples, something similar with different log levels using `winston` or something else.

**Describe alternatives you've considered**
Currently I am looking at the source code to trace through the issues.

Start by reading the related issue #12 and the existing logger usage in the examples, then trace the relevant source code paths. Define the logging entry points, levels, and expected output before implementing anything; done means users can enable debug logs to trace the errors described by this issue.

Written by the indexing model from the issue text.