Account Balance

function accountBalance(input) {
    let index = 0;
    let command = input[index];
    index++;

    let sum = 0;
    while (command !== "NoMoreMoney") {
        let deposit = Number(command);
        if (deposit < 0) {
            console.log(`Invalid operation!`);
            break;
        }
        sum += deposit;
        console.log(`Increase: ${deposit.toFixed(2)}`);

        command = input[index];
        index++;
    }
    console.log(`Total: ${sum.toFixed(2)}`);
}