Yep, plus you can always do a git blame of the commit just before this happens.

For example

  git blame a1b2c4 -- foo.js

Where a1b2c4 is the commit hash. Could even tag the commit to make it more convenient:

  git tag beforeRefmt a1b2c4
  git blame beforeRefmt —- foo.js

and push the tag up for everyone to have access to it

  git push —-tags