/**
 * Baseline loading utilities
 *
 * Load and parse baseline JSON files for performance comparison.
 */
import type { BaselineData, ScenarioMetrics, BenchmarkScenario } from '../types';
/**
 * Validate baseline data structure
 */
export declare function validateBaseline(data: unknown): data is BaselineData;
/**
 * Parse baseline JSON string
 *
 * @param jsonString - Raw JSON string from baseline file
 * @returns Parsed baseline data or null if invalid
 */
export declare function parseBaseline(jsonString: string): BaselineData | null;
/**
 * Get metrics for a specific scenario and item count from baseline
 *
 * @param baseline - Loaded baseline data
 * @param scenario - Scenario name (e.g., 'scroll', 'drag')
 * @param itemCount - Number of items in the test
 * @returns Scenario metrics or null if not found
 */
export declare function getBaselineMetrics(baseline: BaselineData, scenario: BenchmarkScenario | string, itemCount: number): ScenarioMetrics | null;
/**
 * Get vanilla FlashList comparison metrics from baseline
 *
 * @param baseline - Loaded baseline data
 * @param scenario - Scenario name
 * @param itemCount - Number of items
 * @returns Vanilla FlashList metrics or null if not available
 */
export declare function getVanillaMetrics(baseline: BaselineData, scenario: BenchmarkScenario | string, itemCount: number): ScenarioMetrics | null;
/**
 * Create an empty baseline template
 *
 * @param platform - Target platform
 * @param libraryVersion - Current library version
 * @returns Empty baseline structure
 */
export declare function createEmptyBaseline(platform: 'android' | 'ios', libraryVersion: string): BaselineData;
/**
 * Merge new scenario results into baseline
 *
 * @param baseline - Existing baseline data
 * @param scenario - Scenario name
 * @param itemCount - Number of items
 * @param metrics - New metrics to merge
 * @returns Updated baseline data
 */
export declare function mergeIntoBaseline(baseline: BaselineData, scenario: BenchmarkScenario | string, itemCount: number, metrics: ScenarioMetrics): BaselineData;
/**
 * Merge vanilla FlashList comparison results into baseline
 */
export declare function mergeVanillaIntoBaseline(baseline: BaselineData, scenario: BenchmarkScenario | string, itemCount: number, metrics: ScenarioMetrics): BaselineData;
/**
 * Serialize baseline to JSON string
 */
export declare function serializeBaseline(baseline: BaselineData): string;
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