Node 18 is currently the latest available version across the entire website. It requires the admins to update any further than that, but no further updates will be made until all JS kata are updated to node 18. There are compatibility issues with some of the older kata, so those need to be fixed first. There is an effort to get all the JS kata updated, you can join the discord and ask for more info.

This caught me out too. It would be good if the node version was updated but I don't know how to do this.

thx that helped me.
will be more attentive next time)

the function declaration for mirror should have the input parameter data

you are instead using a global array called arr

get rid of that, put data in the declaration, and your function should work

take note data was already part if the set-up, but you took it out. avoid that in the future. your function is expected to operate on whatever input the testing suite sends it

PLs help this is my firs Kata in my life my code works in VS Code but i dont know how to put the answer

Thank you BobtheLantern for your quick reply! Truly appreciate :-).

The error msg (below) wan't obvious about node 18. Looking up further, I learnt that node 20 supports toSorted(), as mentioned on MDN
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted#browser_compatibility.

Thank you again !

TypeError: data.slice(...).toSorted is not a function
at mirror (test.js:4:26)
at makeTest (test.js:24:18)
at Context. (test.js:34:7)
at process.processImmediate (node:internal/timers:471:21)

Read the error message that you get. toSorted() is not available in node 18 (which is the highest version of node available for this kata). You'll have to find a solution that does not use toSorted().

Enabled in this fork

Please see the issue above.

Groovy random tests:

data: [[], [false, ohbtDHwhhu, -27.88444757461548]] header: false index: false

Kata.toTable(data, header, index) == expected
     |       |     |       |      |  |
     |       |     false   false  |  <table><tbody><tr /><tr><td>false</td><td>ohbtDHwhhu</td><td>-27.88444757461548</td></tr></tbody></table>
     |       |                    false
     |       |                    4 differences (96% similarity)
     |       |                    <table><tbody><tr(><)/(tr)><tr><td>false</td><td>ohbtDHwhhu</td><td>-27.88444757461548</td></tr></tbody></table>
     |       |                    <table><tbody><tr( -)/(--)><tr><td>false</td><td>ohbtDHwhhu</td><td>-27.88444757461548</td></tr></tbody></table>
     |       [[], [false, ohbtDHwhhu, -27.88444757461548]]
     <table><tbody><tr></tr><tr><td>false</td><td>ohbtDHwhhu</td><td>-27.88444757461548</td></tr></tbody></table>

For some reason random tests are generating empty arrays for first element of data, which expects us to produce "<tr />" for it. This is undocumented behaviour, and probably out of range of intended specification. A simple fix would be to avoid generating empty lists altogether.

damn i need to learn lambas

Took me long enough, but it's fixed now, please verify.

Wish I knew this earlier