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[Homebrew][] has different commands for `brew uninstall {package}` to remove the executable(s) versus `brew zap {package}` which further performs arbitrary extra cleanup steps specified by the formula.[^formula]

The zap steps are usually deletion of user data and caches, letting a user decide between just removing the application files or explicitly purging their history.

Here's the `zap` stanza [for Firefox][ff]:

```ruby
cask 'firefox' do
  # ...

  zap trash: [
        "/Library/Logs/DiagnosticReports/firefox_*",
        "~/Library/Application Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/org.mozilla.firefox.sfl*",
        "~/Library/Application Support/CrashReporter/firefox_*",
        "~/Library/Application Support/Firefox",
        "~/Library/Caches/Firefox",
        "~/Library/Caches/Mozilla/updates/Applications/Firefox",
        "~/Library/Caches/org.mozilla.crashreporter",
        "~/Library/Caches/org.mozilla.firefox",
        "~/Library/Preferences/org.mozilla.crashreporter.plist",
        "~/Library/Preferences/org.mozilla.firefox.plist",
        "~/Library/Saved Application State/org.mozilla.firefox.savedState",
        "~/Library/WebKit/org.mozilla.firefox",
      ],
      rmdir: [
        "~/Library/Application Support/Mozilla", #  May also contain non-Firefox data
        "~/Library/Caches/Mozilla",
        "~/Library/Caches/Mozilla/updates",
        "~/Library/Caches/Mozilla/updates/Applications",
      ]
end
```


[^formula]: "Formula" is Homebrew's term for the code that specifies an installable package.

[homebrew]: https://brew.sh
[ff]: https://github.com/Homebrew/homebrew-cask/blob/main/Casks/f/firefox.rb