Chess Square Color_Conditional statements

const getGets = (arr) => {
    let index = 0;

    return () => {
        const toReturn = arr[index];
        index += 1;
        return toReturn;
    };
};
// this is the test

const test = [
    'a',
    1,
  ];

const gets = this.gets || getGets(test);
const print = this.print || console.log;

let label = gets();
let rank = +gets();

if(label==='a' || label==='c'|| label==='e'|| label==='g')
{
    if(rank % 10===0)
    {
        print('light');
    }
    else
    {
        print('dark');
    }
}
else if(label==='b'|| label==='d'|| label==='f'|| label==='h')
{
    if(rank % 10===0)
    {
        print('dark')
    }
    else
    {
        print('light');
    }
}