Function map

map<T, K, V>(obj, callback): {
[K in keyof T]: V
}
Similar to Array.map, except that it maps over an object's own enumerable properties.
Type Parameters
- T extends object
- K extends string | number | symbol
- V
Parameters
- obj: T
  The object to map over.
- callback: ((value: T[K], key: K, obj: T) => V)
  The callback to invoke for each property. The callback's return value will be used as the new value for the given property in the returned object.
  - - (value, key, obj): V
    - Parameters
      value: T[K]
      key: K
      obj: T
      Returns V
Returns {
[K in keyof T]: V
}
An object containing the new values produced by the callback function.