Check if Object Instance of Class

export function checkIfInstanceOf(obj: any, classFunction: any): boolean {
  if (obj === null || obj === undefined || typeof classFunction !== 'function') {
    return false;
  }
 
  if (typeof obj === 'object') {
    return obj instanceof classFunction;
  }
 
  return Object(obj) instanceof classFunction;
}

function* prototypeGenerator(obj: any) {
  let currentPrototype = Object.getPrototypeOf(obj);
 
  while (currentPrototype !== null) {
    yield currentPrototype;
    currentPrototype = Object.getPrototypeOf(currentPrototype);
  }
}
 
export function checkIfInstanceOf(obj: any, classFunction: any): boolean {
  if (obj === null || obj === undefined || typeof classFunction !== 'function') {
    return false;
  }
 
  for (const prototype of prototypeGenerator(obj)) {
    if (prototype === classFunction.prototype) {
      return true;
    }
  }
  return false;
}