The description doesn't mention that moving to page through navigate after calling back a few times modifies the URL history.

Please have someone proofread your texts. This Description again has errors in it.

Also, free advice, worth what you paid for it: focus on getting your existing kata right instead of churning out new ones with the same mistakes as the old ones. Try to learn slowly from your mistakes.

Could do with more and bigger tests. This probably can be achieved most easily by implementing random tests.

Please add Example and random Submit tests.

I've fixed the most blatant errors in the Description. I won't hold that against you, English may not be your first language. I've also changed the estimated rank. This is not a 4 ..

If you intended to not just shadow "".split, you need better testing. You also need random testing, regardless. And assertDeepEquals was invented for a reason.

Aliasing a built-in is a terrible kata design.