TimelessLib is a library. It is a lightweight time-tracking and animation toolkit that other mods build on. You usually end up with it because another mod lists it as a requirement, not because you wanted it on its own.
What it actually does in your game
The mod's own description lists only tools for other mods:
- Time management covers cooldowns, countdown timers, a scheduler that triggers actions at set intervals, and a tracker that measures in-game ticks.
- Time conversion turns values between ticks, seconds and dates, and formats them for display.
- Animation helpers use easing and interpolation to make objects move smoothly.
You will see these features through the mods that depend on TimelessLib, for example as a smooth animation or a cooldown that counts down. Don't expect it to add anything you can use directly.
How to check whether you can remove it
1. Open your mods folder and list the other mods you have installed.
2. Check each mod's description or requirements for a mention of TimelessLib.
3. If any mod requires it, keep it.
4. If you are not sure, make a backup copy of the file, remove it, and launch the game.
5. If the game refuses to start or complains about a missing dependency, put TimelessLib back.
6. If everything loads and plays normally, no installed mod was using it.
When in doubt, leave it in. It is described as lightweight, and removing a library that another mod needs is a common cause of launch failures.