2.js

const input = 'forward 2,forward 5,forward 5,down 4,forward 8,down 1,forward 2,forward 2,down 9,down 2,forward 6,forward 3,down 9,down 2,forward 4,up 2,forward 7,up 6,forward 8,forward 4,up 5,forward 3,down 9,forward 5,forward 8,forward 6,forward 6,forward 8,forward 8,forward 5,down 2,forward 8,down 4,down 6,down 6,forward 7,forward 6,up 3,up 5,down 5,down 3,up 2,down 7,down 2,forward 1,forward 6,up 1,down 7,forward 8,down 7,down 6,forward 5,up 6,forward 9,down 9,up 3,down 6,down 1,forward 6,up 1,down 1,up 3,up 7,forward 1,down 5,forward 7,forward 3,down 9,up 8,forward 1,down 4,up 1,forward 9,forward 7,down 2,forward 8,down 2,down 5,down 2,up 1,down 5,forward 4,forward 8,forward 3,forward 3,forward 1,down 1,forward 1,down 7,up 7,down 3,down 1,down 7,down 4,forward 7,forward 5,down 9,down 5,forward 3,up 7,down 2,up 1,forward 1,forward 2,down 7,down 3,forward 7,up 4,forward 3,up 8,down 9,down 4,forward 5,forward 6,down 3,down 5,down 4,down 9,down 8,forward 6,down 3,down 1,down 9,down 6,forward 9,forward 2,up 5,forward 5,forward 4,down 9,up 7,up 2,forward 1,forward 8,forward 6,up 8,down 9,down 2,forward 7,down 6,forward 7,up 9,up 7,down 8,up 1,forward 2,forward 9,down 9,forward 6,down 2,down 1,up 3,forward 4,down 3,down 4,down 9,up 8,up 8,forward 3,up 7,forward 9,forward 7,up 2,up 8,forward 2,down 6,forward 3,forward 1,down 7,down 2,forward 9,forward 9,down 3,forward 2,forward 8,down 6,forward 6,forward 5,forward 1,forward 6,down 8,down 7,up 9,down 6,up 7,down 2,up 8,up 8,down 3,down 7,up 2,up 2,down 6,down 6,forward 2,down 6,forward 8,forward 9,down 3,forward 6,down 9,forward 1,up 6,down 3,up 5,forward 9,forward 7,forward 9,forward 5,up 6,down 3,down 3,down 3,forward 1,up 5,forward 3,forward 2,down 1,forward 7,down 1,forward 6,forward 5,forward 9,up 6,forward 1,up 8,down 7,forward 6,forward 3,forward 1,up 6,forward 4,up 6,down 7,forward 8,forward 4,forward 6,forward 5,up 6,down 7,up 9,down 7,forward 3,down 7,forward 6,down 6,down 6,forward 8,up 8,forward 8,forward 2,down 8,forward 4,forward 9,forward 7,down 4,down 7,forward 4,forward 3,forward 2,forward 2,forward 5,down 6,forward 1,forward 6,up 8,up 3,up 9,forward 3,up 8,forward 3,up 8,down 9,up 7,forward 9,forward 1,down 7,forward 9,down 6,forward 4,down 3,up 9,forward 5,down 4,up 6,down 1,up 9,forward 2,up 2,down 1,forward 7,down 6,down 4,down 7,down 4,down 8,up 9,down 6,up 3,down 7,forward 3,forward 1,down 1,forward 2,forward 6,down 6,forward 5,down 8,down 8,down 6,down 9,forward 6,forward 7,up 8,forward 5,up 8,down 6,up 3,forward 9,up 9,forward 2,up 6,forward 2,down 8,forward 3,down 5,down 8,up 6,down 3,down 7,down 4,forward 5,forward 8,down 8,forward 6,down 8,up 1,forward 5,down 3,down 2,up 1,forward 3,forward 7,forward 6,forward 9,up 8,down 2,down 1,down 7,forward 4,forward 2,down 9,down 3,down 5,up 6,down 2,forward 8,up 1,up 5,down 6,down 7,forward 3,down 4,up 6,down 9,up 6,down 2,down 2,down 6,down 3,forward 9,down 6,forward 5,forward 6,forward 4,down 6,forward 3,down 9,up 8,forward 2,up 3,forward 1,up 8,forward 1,down 6,down 3,forward 5,forward 4,down 9,up 3,down 6,forward 4,down 8,down 3,down 7,forward 1,forward 2,forward 8,down 2,down 6,up 9,forward 2,forward 4,forward 8,down 3,forward 9,down 7,up 8,forward 1,down 6,down 3,forward 5,forward 5,forward 2,down 2,down 2,down 2,up 4,forward 2,forward 5,forward 1,forward 5,down 3,forward 8,up 1,forward 9,up 5,forward 2,down 4,forward 8,forward 9,up 6,up 1,down 7,down 3,forward 9,down 3,down 3,forward 3,forward 6,up 4,forward 2,down 9,forward 5,forward 3,forward 5,down 6,up 6,down 7,forward 2,down 4,forward 6,forward 5,forward 8,down 4,up 3,up 4,down 9,forward 9,down 7,down 1,down 9,down 6,down 8,forward 7,down 3,up 3,up 5,forward 5,up 6,down 6,forward 9,down 7,forward 6,up 1,forward 7,forward 8,down 9,down 1,forward 4,up 2,down 3,up 3,down 6,forward 6,down 7,down 2,forward 8,forward 2,forward 3,forward 5,up 8,up 6,down 1,up 7,down 1,down 8,forward 5,up 7,down 1,forward 8,down 6,down 2,up 7,down 1,forward 1,up 8,forward 5,down 7,down 8,forward 4,down 6,down 2,forward 4,forward 7,down 5,down 1,down 8,down 3,up 8,down 6,down 1,down 1,forward 4,down 8,up 5,forward 3,forward 3,forward 5,forward 8,up 7,forward 5,down 8,forward 9,up 9,forward 1,down 2,up 9,down 7,up 1,up 3,forward 9,forward 8,forward 3,forward 8,down 8,down 5,down 7,up 7,forward 9,up 8,down 9,down 9,down 1,up 4,up 4,up 3,forward 3,down 7,down 3,forward 5,up 9,down 3,up 2,forward 1,forward 4,up 9,forward 6,down 6,down 6,forward 2,forward 2,down 4,forward 9,up 6,down 8,down 8,down 9,up 4,down 9,down 3,down 7,forward 4,up 4,up 5,down 2,up 2,forward 1,up 8,forward 2,down 6,forward 9,down 9,forward 9,up 8,down 5,up 3,up 9,down 8,forward 6,forward 2,forward 7,down 9,down 8,up 9,down 5,up 5,down 1,forward 3,down 2,down 5,down 4,down 1,down 5,down 5,down 5,forward 8,down 2,down 3,down 4,down 2,up 8,up 1,down 5,forward 8,down 6,forward 9,down 6,down 6,down 5,forward 5,forward 3,forward 7,down 6,forward 4,down 8,up 9,up 6,forward 5,down 4,forward 8,forward 1,forward 8,up 5,up 5,forward 6,down 3,down 7,up 7,down 5,forward 1,forward 3,up 3,down 3,down 3,down 5,forward 9,down 2,up 5,up 2,forward 1,down 1,forward 5,down 8,forward 8,forward 9,forward 3,forward 2,forward 4,down 5,up 1,down 5,up 1,up 4,forward 2,forward 4,down 6,up 2,up 4,forward 4,down 7,forward 2,up 1,forward 4,up 4,forward 9,down 1,down 4,up 1,forward 2,forward 3,down 6,forward 9,forward 3,down 2,forward 9,up 4,forward 5,forward 2,down 2,forward 5,down 5,down 3,down 7,down 7,up 3,down 7,forward 9,forward 7,up 4,forward 7,up 8,down 8,forward 5,down 2,down 9,up 8,forward 4,forward 4,forward 2,up 4,down 5,forward 3,forward 6,forward 5,forward 3,forward 7,up 9,forward 1,forward 2,up 7,down 4,forward 8,down 2,forward 1,down 1,down 9,up 2,down 2,forward 8,forward 5,up 9,forward 5,down 2,forward 2,down 7,forward 5,down 1,forward 9,forward 8,forward 8,forward 9,forward 8,down 9,forward 8,down 1,down 2,down 9,up 2,forward 8,forward 8,down 9,forward 8,up 8,forward 2,down 5,up 3,forward 2,up 3,down 6,forward 5,up 7,forward 2,forward 7,forward 7,down 8,forward 3,up 5,down 8,down 3,down 8,up 6,down 6,up 4,forward 7,up 6,up 1,down 5,up 8,forward 8,forward 9,down 8,forward 6,down 8,down 9,down 8,forward 9,up 1,down 1,down 8,down 5,down 2,up 7,forward 4,down 4,forward 6,down 1,forward 5,forward 3,forward 9,up 8,down 4,down 6,down 4,down 1,up 9,forward 9,down 9,forward 7,down 2,down 8,forward 2,forward 5,down 6,down 1,down 1,up 3,forward 9,up 7,down 1,down 6,forward 6,up 2,down 4,down 7,forward 3,down 9,down 1,forward 7,forward 2,forward 6,down 4,forward 7,forward 8,forward 3,forward 7,up 8,forward 5,up 8,down 8,forward 3,forward 8,forward 7,forward 3,down 4,forward 9,forward 4,up 6,forward 4,forward 6,up 4,forward 6,forward 2,down 3,down 3,down 4,down 1,down 9,up 1,up 9,down 7,up 9,forward 5,down 2,up 7,forward 9,up 1,down 5,up 8,forward 9,down 1,up 3,forward 3,forward 9,up 7,forward 3,down 7,forward 3,forward 5,forward 4,up 3,forward 3,down 8,forward 7,up 5,forward 9,down 6,up 6,up 1,forward 8,down 9,forward 9,forward 9,down 5,down 7,forward 7,down 5,down 3,forward 4,up 6,forward 6,forward 2,down 8,down 6,forward 1,forward 1,down 6,forward 1,down 6,down 2,forward 1,forward 6,up 4,up 7,up 3,down 6,forward 1,forward 9,forward 4,down 4,forward 3,down 8,down 6,down 6,forward 2,forward 8,forward 6,down 4,up 2,down 1,up 4,down 8,forward 9,down 4,down 8,up 8,forward 2,up 9,down 9,forward 2,down 8,forward 3,down 1,up 9,forward 6,down 9,forward 2,down 2,up 5,down 4,down 5,down 7,forward 4,down 4,forward 6,forward 2,down 8,up 3,up 9,forward 3,forward 6,down 6,down 2,down 5,down 4,forward 1,up 2,down 3,forward 6,forward 5,down 4,down 3,forward 2,forward 4,down 9,down 3,down 4,up 6,forward 8,up 2,up 8,up 4,forward 7,forward 5,forward 9,down 6,forward 7,forward 9,up 3,forward 6'
const inputArray = input.split(',');
const inputDict = inputArray.map(instruction => {
    let [direction, count] = instruction.split(' ');
    return {[direction]: parseInt(count)};
})

let position = {
    x: 0,
    depth: 0,
    aim: 0
};

for(let instruction of inputDict){
    if(instruction.forward) {
        position.x += instruction.forward;
        position.depth += position.aim * instruction.forward
    } else if(instruction.down) {
        position.aim += instruction.down;
    } else if(instruction.up) {
        position.aim -= instruction.up;
    }
}

console.log(position)
console.log(position.x * position.depth)