bessgeor

import * as moment from 'moment';

type ArrayLike = any[] & { length: number }; // { length?: number } extends any[] == true

type IsNullable<T>    = null extends T        ? true : false;
type IsUndefinable<T> = undefined extends T   ? true : false;
type Unwrap<T>        = T extends (infer U)[] ? U    : never;
type IsArray<T>       = T extends ArrayLike   ? true : false;

type EnumLike<T> =