import type { HealthCheckContract, HealthCheckResult } from './types.ts';
/**
 * Base class with shared affordances to define a custom health check
 *
 * @example
 * ```typescript
 * class CustomCheck extends BaseCheck {
 *   name = 'Custom check'
 *
 *   async run() {
 *     // Your health check logic
 *     return Result.ok('Everything is working fine')
 *   }
 * }
 *
 * const check = new CustomCheck()
 *   .as('My custom health check')
 *   .cacheFor('30s')
 * ```
 */
export declare abstract class BaseCheck implements HealthCheckContract {
    /**
     * A unique name for the health check
     */
    abstract name: string;
    /**
     * The cache duration for the check result in seconds
     */
    cacheDuration?: number;
    /**
     * Define a custom unique name for the check
     *
     * @param name - The unique name for the health check
     *
     * @example
     * ```typescript
     * const check = new MyCheck().as('Database connection check')
     * ```
     */
    as(name: string): this;
    /**
     * Specify the duration for which the check results should be cached
     *
     * @param duration - The cache duration as a string (e.g., '5s', '1m') or number in seconds
     *
     * @example
     * ```typescript
     * const check = new MyCheck().cacheFor('5 minutes')
     * // or
     * const check2 = new MyCheck().cacheFor(300) // 300 seconds
     * ```
     */
    cacheFor(duration: string | number): this;
    /**
     * Executes the health check and returns the result.
     * Must be implemented by all health check classes
     */
    abstract run(): Promise<HealthCheckResult>;
}