Implement a function makeCounter that accepts an optional integer value and returns a function. When the returned function is called initially, it returns the initial value if provided, otherwise 0. The returned function can be called repeatedly to return one more than the return value of the previous invocation.

Examples

const counter = makeCounter();
counter(); // 0
counter(); // 1
counter(); // 2

With a custom initial value:

const counter = makeCounter(5);
counter(); // 5
counter(); // 6
counter(); // 7

Each call to makeCounter() should create an independent counter.