import { StringRuleChecker } from './string-rule-checker';
import { GuardResult } from '../../core/guard-result';
/**
 * Numeric pattern:
 * - Only numbers.
 */
export declare const NUMERIC_PATTERN = "^[0-9]+$";
export declare class StringIsNumeric extends StringRuleChecker<{
    type: 'isNumeric';
}> {
    constructor(rule: {
        type: 'isNumeric';
    }, value: string);
    /**
     * @override
     */
    exec(): GuardResult;
    private isNumeric;
}