javascriptAsync race conditionMedium

Array contains pending operations

Time: 0:00

What it should do

collectNames(ids) should resolve every name and report the count and the type of the first entry, so collectNames([1,2]) gives "2-string".

What goes wrong

collectNames([1, 2]) returns "2-object" instead of "2-string".

Hints

This is an async and race conditions bug

A missing await, results in the wrong order, and updates that overwrite each other under load.