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by simlevesque 1992 days ago
> And JavaScript has always had a map method on arrays, which transforms the array's values into other values.

This is false. Array.map has been only available since 2011 in Ecmascript and has been usable without polyfills since only around 2016. You have to be a newbie in the language not to know this... If anyone older than me ever said that to me I would judge them.