tsc looses trailing comments in the produced js files

[OrKoN]

🔎 Search Terms

"missing comments", "missing comments in .js output", "trailing comments"

🕗 Version & Regression Information

Happens in every version available in the playground (3.3.3 to v5.8.0-dev.20241218)

⏯ Playground Link

https://www.typescriptlang.org/play/?ts=5.7.2#code/MYGwhgzhAECC0G8CwAoa7oHpPQNYFN8AHAWggHsAnAF3wBNoJqwbUNoBbfagC3LtgAKAJSI27DMHIA7CiHwA6EOQDmggEQUa9dcIDc49AF9DWHAWJkqtBvml1URoA

💻 Code

class A {
    // keep-sorted start
    methodA() {
        console.log("sorted");
    }
    // keep-sorted end
}

🙁 Actual behavior

// keep-sorted end is missing in the .js output.

🙂 Expected behavior

// keep-sorted end is retained in the .js output.

Additional information about the issue

No response

[MartinJohns]

Related: #56055 (comment)

FYI 100% comment preservation is not a goal of TS's emitter and you should try not to put yourself in a position where you need all comments in arbitrary positions to be maintained.