• Node 18. (mocha + chai) should be enabled

• Description does not mention whether each subtable of a datatable will have only 1 field (the one used for pairing).

• Also assume each cell contains only strings or numbers (no need to test for deep equality),

  What if the expected and actual result contain 0 / 0.0 / ""...

For PHP
Why did the crash test on :
[13,10,12,13,17,14,18,20,19,14]
while I send back well :
[[13,13],[10],[12],[17],[14,14],[18],[20],[19]]
is this not the expected result?

Actual and expected values are flipped.