In some rare situation you may need to map a class-like object which holds properties of an inherited object on its prototype-chain. In such cases Object. keys() and Object.

Can I use map on an object?

In some rare situation you may need to map a class-like object which holds properties of an inherited object on its prototype-chain. In such cases Object. keys() and Object.

What is an object map?

Map objects are collections of key/value pairs where both the keys and values may be arbitrary ECMAScript language values. A distinct key value may only occur in one key/value pair within the Map’s collection.