Exercise: a counter

Write a function function makeCounter(start) that returns an object with two methods, next and reset. The call next() increases the count by 1 and returns the new value, and reset() sets the count back to start.

• makeCounter(0), then next() → 1, one more next() → 2
• makeCounter(5): next(), next(), reset(), then next() → 6
• makeCounter(-3), then next() → -2

Constraints: start is an integer from -1000 to 1000; the result of reset() is not checked; every counter created by a separate call of makeCounter has its own count, and calls on one counter do not change another.

Do not add extra imports unless the task says so explicitly.