Get sum stack

input: a stack
output: sum of all y0, y1, including data ({})

for (let i = 0; i < stacks[0].length; i++){
	let point = [];
	point[0] = stacks.reduce(
    (accumulator, currentValue) => accumulator + currentValue[i][0],0);
point[1] = stacks.reduce(
    (accumulator, currentValue) => accumulator + currentValue[i][1],0);
point.data = stacks[0][i].data;
total.push(point);
}