(Javascript)

Write a function, `dynamicIntervalCount`, that accepts a callback, a delay

in milliseconds, and an optional amount as arguments. The function should

set an interval with the given callback and delay. If an amount argument

is passed, the interval should be cleared after the callback has been

called 'amount' number of times. If an amount argument is not passed,

the interval should not be cleared and `dynamicIntervalCount` should instead

return the Timeout object for the interval.

Examples:

dynamicIntervalCount(function() {

console.log('hi');

}, 500, 3); // prints 'hi' at 500ms intervals a total of 3 times

const timeoutObject = dynamicIntervalCount(function() {

console.log('hi');

}, 500); // prints 'hi' at 500ms intervals indefinitely

console.log(timeoutObject); // Timeout { ... }

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function dynamicIntervalCount(cb, delay, amount) {

// Your code here

}