import { IValidationResult } from "../api/validation-result.interface";
export declare class ValidationHelper {
    static notEmpty(val: string | any[]): IValidationResult;
    static notEmptyAndNoWhitespace(text: string): IValidationResult;
    static noWhitespaces(text: string): IValidationResult;
    static relativePath(path: string): IValidationResult;
    static absolutePath(path: string): IValidationResult;
    static containsValue(accepetedValues: string[]): (value: string) => IValidationResult;
    static isArray(value: any): IValidationResult;
    static isString(value: any): IValidationResult;
    private static trim;
    private static getType;
}