import { StringRuleChecker } from './string-rule-checker';
import { GuardResult } from '../../core/guard-result';
/**
 * Binary pattern:
 * - ECMAScript 2015 introduces BinaryIntegerLiteral, prefixed with 0b or 0B (not supported by old browsers).
 */
export declare const BINARY_PATTERN = "^(0(b|B))?[0-1]+$";
export declare class StringIsBinary extends StringRuleChecker<{
    type: 'isBinary';
}> {
    constructor(rule: {
        type: 'isBinary';
    }, value: string);
    /**
     * @override
     */
    exec(): GuardResult;
    private isBinary;
}