A simple program which shows the very basics of Redux, in a nutshell!

Expected Output: {counter: 1} {counter: 0}

How, you ask?

• When the reducer initializes, it takes current counter state i.e. 0.
• When it executes the first dispatch action(increment), reducer runs the corresponding if condition, increments the counter,sets it to 1, then prints the object.
• Similar happens when it reaches to the second dispatch method (decrement), and it substracts 1 from the current state value and prints the object.