Reference

type Arg = 
  | ArrayArg
  | ObjectArg;

type ArrayArg = unknown[];

type Character = 
  | typeof Characters[keyof typeof Characters]
  | string & object;

type ObjectArg = Record<PropertyKey, unknown>;

type Part = typeof Parts[keyof typeof Parts];

const Characters: object;

const Parts: object;

function del(object, path): boolean

function get(
   ogObject, 
   path, 
   defaultValue?): unknown

function has(object, path): boolean

function set<T>(
   object, 
   path, 
   value): T