message: fix: isObject function return true for null argument
diff: @@ -16,7 +16,7 @@ export const validate = (errors: string[] | { [key: string]: string[] }): string
  return [];
  };
  -export const isObject = (val: any): boolean => typeof val === 'object';
  +export const isObject = (val: any): boolean => typeof val === 'object' && val !== null;
  export const omitKeys = (keys: string[], obj: object): object => {
  const updatedObj = { ...obj };
  