import { StringRuleChecker } from './string-rule-checker';
import { StringPosition } from './string-types';
import { GuardResult } from '../../core/guard-result';
export declare class StringContains extends StringRuleChecker<{
    type: 'contains';
    value: string;
    pos?: StringPosition;
}> {
    constructor(rule: {
        type: 'contains';
        value: string;
        pos?: StringPosition;
    }, value: string);
    /**
     * @override
     */
    exec(): GuardResult;
    private contains;
    private startsWith;
    private endsWith;
}