import { StringRuleChecker } from './string-rule-checker';
import { GuardResult } from '../../core/guard-result';
/**
 * AlphaNumeric pattern:
 * - Only basic-latin characters and/or numbers.
 * - Not case sensitive.
 */
export declare const ALPHA_NUMERIC_PATTERN = "^[0-9a-zA-Z]+$";
export declare class StringIsAlphaNumeric extends StringRuleChecker<{
    type: 'isAlphaNumeric';
}> {
    constructor(rule: {
        type: 'isAlphaNumeric';
    }, value: string);
    /**
     * @override
     */
    exec(): GuardResult;
    private isAlphaNumeric;
}