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lang-js
mapto the array to adjust the values ([...Array(10).keys()].map(x => x++);) to start at 1map(x => x++)tomap(x => ++x)due to precedence increment happens after the value return :)mapwhen you can simplyslice?[...Array(N+1).keys()].slice(1)keysand only 1 map ->Array.from(Array(10)).map((e,i)=>i+1)fromArray.from(Array(10), (e,i)=>i+1)