Recently I needed to track down when a particular piece of logic changed in a file. I couldn't remember the date that it changed or any relevant information that might help me find the commit in which it changed. Luckily, git (and GitHub) provide tooling that helped me find what I was looking for.
Git itself provides functionality to chronologically view commits that have occurred on a particular file or directory.
git log --follow -p -- pathToFileOrDirectory # examples git log --follow -p -- src/helpers git log --follow -p -- src/helpers/helper1.js
If you prefer a GUI utility, you can also use
gitk to accomplish the same thing:
If you happen to host your code on GitHub, you can also view the commits on a file or directory over time in their web interface.
https://github.com/USER/REPO/commits/BRANCH_OR_SHA/PATH where the
PATH_TO_FILE_OR_DIRECTORY is optional.