//input --> Hamza Khan
    ProcessFullName(full_name): Object {
        var Obj = {
            FirstName: "",
            LastName: "",
            MiddleName: ""
        };
        var splitName = full_name.split(" ");
        if (splitName.length>0) {
            switch (splitName.length) {
                case 1:
                    Obj.FirstName = splitName[0];
                    break;
                case 2:
                    Obj.FirstName = splitName[0];
                    Obj.LastName = splitName[1];
                    break;
                case 3:
                    Obj.FirstName = splitName[0];
                    Obj.MiddleName = splitName[1];
                    Obj.LastName = splitName[2];
                    break;
            }
        }
        return Obj;
    } //Output --> { FirstName: "Hamza", LastName: "Khan", MiddleName: "" }

interface SplitNameData {  // Does anybody have a better interface name?
  FirstName: string;
  MiddleName: string;
  LastName: string;
}

ProcessFullName(full_name: string): SplitNameData {
  const Obj: SplitNameData = {
    firstName: '',
    middleName: '',
    lastName: ''
  };

case 2:
  [Obj.FirstName, Obj.LastName] = splitName;
  break;
case 3:
  [Obj.FirstName, Obj.MiddleName, Obj.LastName] = splitName;
  break;

const NAME_PATTERN = /^(?<firstName>[^ ]*) ((?<middleName>[^ ]*) )?(?<lastName>[^ ]*)$/;

const emptyNameData = {
  firstName: '', middleName: '', lastName: ''
};

const {
  groups: {
    firstName,
    middleName = '',
    lastName
  } = emptyNameData
} = NAME_PATTERN.exec(fullName) || {};
alert([firstName, middleName, lastName]);

ProcessFullName(fullName): Object {
    const names = fullName.split(" ");
    const vet = name => name ? name : "";
    return {
        first:  vet(names.shift()),
        last:   vet(names.pop()),
        middle: vet(names.join(" "))
    };
}