We can use the Object.entries() method
to create a Map that contains
all the properties of an object.
We cannot pass an object directly into new Map(),
to create a map containing all the properties of that object.
new Map() only accepts an iterable,
like an array.
Since an object is not iterable,
we create an array of all the key-value pairs of the object,
using the Object.entries method
and
pass that to new Map().