https://docs.vultr.com/javascr....ipt/standard-library
javascript flatmap
n JavaScript, the flatMap() method is used to first map each element using a provided function, and then flatten the result by one level. It's a combination of the map() and flat() methods.
map() transforms each element of an array based on the provided function.
flat() flattens a nested array by a specified level.
flatMap() combines both operations into one.


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