Map an array of arrays

Question

Is there a method in lodash to map over an array of arrays

I would like to do something like this so that it keeps the structure of the array.

def double         


        

Answer 1

const deepMap=(input,callback)=>input.map(entry=>entry.map?deepMap(entry,callback):callback(entry))

//test 

deepMap([1,2,3,[1,2]],x=>x*2) // [1,4,9,[1,4]]