Implementation of [CycleDetection.js](https://github.com/TheAlgorithms/JavaScript/blob/master/Data-Structures/Linked-List/CycleDetection.js) seems inappropriate. - Weird function name `main()` and its invocation can cause the program to crash. - Tests are missing. - Not exported, Hence not resuable. - Can be optimized further (Optional)
Implementation of CycleDetection.js seems inappropriate.
main()and its invocation can cause the program to crash.