Just run npx sort-package-json.
This takes about 4–8 seconds on my machine
because npx has to first download the sort-package-json package.
If that's too slow for you,
install the package globally:
# i = install
# -g = --global
npm i -g sort-package-json
Then you can run just:
sort-package-json
And it will take less than a second.
You can also install the package locally
and even run it in Git's pre-commit hook (using Husky or Lefthook)
or in your CI pipeline.
More options are mentioned in sort-package-json's documentation.
Source: My own Stack Overflow answer