出國前看到的東西，LINE 在 GitHub 上發表了整理 TypeScript 程式碼的套件：「Show HN: ts-remove-unused – Remove unused code from your TypeScript project (github.com/line)」，專案在「line/ts-remove-unused」這邊：
Remove unused code from your TypeScript project
不過 Hacker News 上的反應其實頗差，其中一個原因是預設值不太友善，沒有好的 ignore path 設定，test case 這種從 entry point 不會接觸到的就會被誤判了：
It deleted 100s of files, most of which were Jest test files, and potentially all of which were a mistake. I restored them all with `git restore $(git ls-files -d)`.
另外改出來的東西是爛的：
I then ran `tsc` on the remaining _modified_ files and `Found 3920 errors in 511 files.`
另外有不少人抱怨預設不是 dry run mode，被砍了一堆東西：
You should switch the default to not delete any files and modify/remove the files only with some flag (--dry-run=false, --rm, --delete, etc). I just deleted all files accidentally in a monorepo :D Luckily I didn't had any uncommitted changes and could recover using git
反倒是有人提了另外一個已經在停止發展，但運作的很好的 project：
I've been using ts-prune[1] for years at this point. The project is in maintenance mode but works fine so I've kept using it. I've been looking into Knip[2] which is recommended by the authors of ts-prune though it's been slow mostly because there's little incentive with the current tool working fine.
[1]: https://github.com/nadeesha/ts-prune
[2]: https://github.com/webpro-nl/knip
這邊反而值得看看...