function memoize(fn) {
    const cache = {};
    return function (arg) {
        if (cache[arg]) {
            console.info(`Use cache to returns previous data`);
            return cache[arg];
        }
        const result = fn(arg);
        cache[arg] = result;
        return result;
    }
}

function power3(x) {
    console.warn('Calculate result');
    return Math.pow(x, 30);
}

const number = 12;

console.group('Regular: Calculate result');
console.time();
power3(number);
console.timeEnd();
console.groupEnd();

const fastPower3 = memoize(power3);

console.group('Memoize: Calculate result and save into cache');
console.time();
fastPower3(number);
console.timeEnd();
console.groupEnd();

console.group('Memoize: returns value from cache');
console.time();
fastPower3(number);
console.timeEnd();
console.groupEnd();

console.group('Memoize: returns value from cache (second time)');
console.time();
fastPower3(number);
console.timeEnd();
console.groupEnd();