import { NopePrimitive } from './NopePrimitive';
import { Nil } from './types';
export declare class NopeString extends NopePrimitive<string> {
    protected _type: string;
    validate(entry?: any, context?: Record<string, unknown>): string | undefined;
    validateAsync(entry?: any, context?: Record<string, unknown>): Promise<string | undefined>;
    protected isEmpty(value: string | Nil): boolean;
    regex(regex: RegExp, message?: string): this;
    url(message?: string): this;
    email(message?: string): this;
    min(length: number, message?: string): this;
    max(length: number, message?: string): this;
    greaterThan(length: number, message?: string): this;
    lessThan(length: number, message?: string): this;
    atLeast(length: number, message?: string): this;
    atMost(length: number, message?: string): this;
    between(startLength: number, endLength: number, atLeastMessage?: string, atMostMessage?: string): this;
    exactLength(length: number, message?: string): this;
    trim(): this;
}