/**
 * Checks whether specified value is date or not.
 *
 * @param val The value to be tested for date check!
 * @returns `true` if the value is a date otherwise `false`
 */
declare const isDTTypeString: (val: any) => val is string;
/**
 * Checks whether specified value is datetime or not.
 *
 * @param val The value to be tested for number check!
 * @returns `true` if the value is a datetime otherwise `false`
 */
declare const isDateTimeString: (val: any) => val is string;
/**
 * Checks whether specified value is date or not.
 *
 * @param val The value to be tested for date check!
 * @returns `true` if the value is a date otherwise `false`
 */
declare const isDateString: (val: any) => val is string;
/**
 * Checks whether specified value is time or not.
 *
 * @param val The value to be tested for time check!
 * @returns `true` if the value is a date otherwise `false`
 */
declare const isTimeString: (val: any) => val is string;
/**
 * Checks whether specified value is an array or not.
 *
 * @param val The value to be tested for an array check!
 * @returns `true` if the value is an array otherwise `false`
 */
declare const isArray: (val: any) => val is any[];
declare const isPlainObject: (val: any) => boolean;
/**
 * Checks whether specified value reprents datatype.
 *
 * @param val The value to be tested for an datatype check!
 * @returns `true` if the value is a datatype otherwise `false`
 */
declare const isDataType: (val: string) => boolean;
declare function isDefined<T>(val: T | null | undefined): val is T;
/**
 *
 * @param obj
 */
declare const isSchemaDef: (obj: any) => boolean;

export { isArray, isDTTypeString, isDataType, isDateString, isDateTimeString, isDefined, isPlainObject, isSchemaDef, isTimeString };