A two-dimensional array implementation.
constArray2D=require('mini-array2d');constfoo=newArray2D(2,2);foo.forEach(function(e,pos,arr){arr.set(pos[0],pos[1],pos);});console.log(foo.get(0,0));// get value at point (0, 0)console.log(Array2D.toDualArray(foo));// convert Array2 to array-of-arrays