import { Assertion as CoreAssertion, NumericAssertionBuilder } from './internal/assertion';
/**
 * Sources that can be used for URL monitor assertions.
 * URL monitors only support status code validation.
 */
type UrlAssertionSource = 'STATUS_CODE';
/**
 * Assertion configuration for URL monitors.
 * Allows validation of HTTP response status codes.
 */
export type UrlAssertion = CoreAssertion<UrlAssertionSource>;
/**
 * Builder class for creating URL monitor assertions.
 * Provides methods to create assertions for validating HTTP responses.
 *
 * URL monitors have limited assertion capabilities compared to API checks.
 * They can only validate status codes. For more advanced assertions
 * (headers, body content, response times), use ApiCheck instead.
 *
 * @example
 * ```typescript
 * // Check for specific status code
 * UrlAssertionBuilder.statusCode().equals(200)
 *
 * // Check for successful response (2xx)
 * UrlAssertionBuilder.statusCode().greaterThan(199)
 * UrlAssertionBuilder.statusCode().lessThan(300)
 *
 * // Check for any non-error response
 * UrlAssertionBuilder.statusCode().lessThan(400)
 *
 * // Check for specific client error
 * UrlAssertionBuilder.statusCode().equals(404)
 *
 * // Check for server errors
 * UrlAssertionBuilder.statusCode().greaterThan(499)
 * UrlAssertionBuilder.statusCode().lessThan(600)
 * ```
 *
 * @see {@link https://www.checklyhq.com/docs/detect/uptime-monitoring/url-monitors/overview/ | URL Monitors Documentation}
 */
export declare class UrlAssertionBuilder {
    /**
     * Creates an assertion builder for HTTP status codes.
     * This is the only type of assertion supported by URL monitors.
     *
     * @returns A numeric assertion builder for status codes
     *
     * @example
     * ```typescript
     * // Basic usage
     * const assertion = UrlAssertionBuilder.statusCode().equals(200)
     *
     * // Check for range of status codes
     * const successAssertion = UrlAssertionBuilder.statusCode().lessThan(400)
     * ```
     */
    static statusCode(): NumericAssertionBuilder<"STATUS_CODE", string>;
}
export {};