import type { KpiComparison, KpiValueMode } from '../../../../../domains/visualizations/core/chart-data-options/types.js';
import type { NlqTranslationError, NlqTranslationResult } from '../../../types.js';
import type { InternalDataSchemaContext, KpiComparisonJSON } from '../../types.js';
/**
 * Type guard: value is a valid {@link KpiValueMode}.
 *
 * @param value - Value to check.
 * @returns True when the value is 'last' or 'total'.
 */
export declare function isKpiValueMode(value: unknown): value is KpiValueMode;
/**
 * Validates `valueMode` from JSON.
 *
 * @param valueMode - Raw `valueMode` value.
 * @returns NlqTranslationResult with the validated value mode.
 */
export declare function translateKpiValueModeFromJSON(valueMode: unknown): NlqTranslationResult<KpiValueMode>;
/**
 * Translates a CSDK KPI comparison to JSON.
 * Keeps `type`, translates measure baselines and keeps a numeric `target` as is.
 *
 * @param comparison - CSDK `KpiComparison`.
 * @returns NlqTranslationResult with KpiComparisonJSON or errors.
 */
export declare function translateKpiComparisonToJSON(comparison: unknown): NlqTranslationResult<KpiComparisonJSON>;
/**
 * Translates a KPI comparison from JSON to CSDK.
 * Keeps `type`, translates measure baselines and keeps a numeric `target` as is.
 * Collects errors into `translationErrors`; never throws.
 *
 * @param comparisonJSON - Raw comparison JSON.
 * @param context - Schema context for measure translation.
 * @param translationErrors - Array to collect errors into.
 * @returns CSDK `KpiComparison`, or null if translation failed.
 */
export declare function translateKpiComparisonFromJSON(comparisonJSON: unknown, context: InternalDataSchemaContext, translationErrors: NlqTranslationError[]): KpiComparison | null;