dex01

How about using the already provided git provided diff-highlight tool ?

git config core.pager /usr/share/git/diff-highlight/diff-highlight

It's a good library, but it does not provide a way to validate nested tables and is not suitable for JSON validation

From my experience every developer I know who ended up early as a manager, where not really happy with that. Most of them had the impression of being taken apart of technical challenges, and wasting their time in endless meetings.