easterShop

function easterShop(input) {
    let index = 3;
    let initialEggsInShop = Number(input[0]);
    let command = input[1];
    let eggsToFill = Number(input[2]);

    let eggsSold = 0;

    while (command !== "Close") {
        if (command === "Fill") {
            initialEggsInShop += eggsToFill;
        }
        else if (command === "Buy") {
            initialEggsInShop -= eggsToFill;
            eggsSold += eggsToFill
        }

        command = input[index];
        index++

        if (index >= input.length) {
            break;
        }

        eggsToFill = Number(input[index]);
        index++;

        if (eggsToFill > initialEggsInShop) {
            console.log(`Not enough eggs in store!`);
            console.log(`You can buy only ${initialEggsInShop}.`);
        }
    }

    if(command === "Close") {
        console.log(`Store is closed!`);
        console.log(`${eggsSold} eggs sold.`);
    }
}