toStringbeginner// Get string representation of an object
const obj = { a: 1 }
obj.toString() // β '[object Object]'
Object.prototype.toString.call([]) // β '[object Array]'Use toString() to convert an object to a string; calling it via Object.prototype.toString.call() reveals the internal type tag.
obj.toString() returns "[object Object]" by default for plain objects.
Challenge: Implement getStringRep(obj) that returns the string representation of the object.