/**
 * ETag Support for Jira API
 *
 * Implements ETag-based conditional requests to reduce API calls.
 */
/**
 * ETag manager
 */
export declare class ETagManager {
    private cache;
    /**
     * Get ETag for a resource
     */
    getETag(key: string): Promise<string | null>;
    /**
     * Set ETag for a resource
     */
    setETag(key: string, etag: string, lastModified?: string): Promise<void>;
    /**
     * Build If-None-Match header for conditional request
     */
    buildConditionalHeaders(key: string): Promise<Record<string, string>>;
    /**
     * Check if response is not modified (304)
     */
    isNotModified(statusCode: number): boolean;
    /**
     * Extract ETag from response headers
     */
    extractETag(headers: Headers | Record<string, string>): string | null;
    /**
     * Extract Last-Modified from response headers
     */
    extractLastModified(headers: Headers | Record<string, string>): string | null;
    /**
     * Process response and update ETag cache
     */
    processResponse(key: string, response: Response, data?: any): Promise<{
        notModified: boolean;
        data?: any;
    }>;
    /**
     * Clear ETag for a resource
     */
    clearETag(key: string): Promise<void>;
}
/**
 * Get or create global ETag manager
 */
export declare function getETagManager(): ETagManager;
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