You should create a synchronous function that takes 7 seconds.

The log says 7000+ ms since it waits for the process to end. Meanwhile, Node have to wait until all promises are resolved. That's why the log says 7 seconds but not the tests.

it's nice when mine matches the top answer

funny but good! :D

• The tests will check for objects' exact equality so if you return copies of objects your test results will fail

This is not true ( anymore ) and should be taken out.

Tests are vulnerable to input modification.

If you like your object equality, the pieces should be ( individually ) frozen. Object equality is actually unnecessary, and deepcopied pieces could be passed, but that's probably more work.

Performance constraints are different, and the identifyable parts are also different enough to make these two different kata's.

i found this kinda funny, the title literally say "Lost Without a Map", but here you are using a "Map()" xDD
its still a good solution tho

These solutions showing me how I need to think differently and not overcomplicate things lol.

No answer after 3 weeks, closing.

• Julia translation
• Prolog translation

I learned quite a few ways for manipulating execution time from this kata and it's solutions, so I disagree with you here.

Lua translation!

approved