import type { HighlightScope } from '@mui/x-charts/context';
import type { HighlightItemIdentifier } from '@mui/x-charts/models';
/**
 * The isHighlighted logic for main charts (those that are identified by an id and a dataIndex)
 */
export declare function createIsHighlighted(highlightScope: HighlightScope<'heatmap'> | null | undefined, highlightedItem: HighlightItemIdentifier<'heatmap'> | null): (item: HighlightItemIdentifier<"heatmap"> | null) => boolean;
/**
 * The isFade logic for main charts (those that are identified by an id and a dataIndex)
 */
export declare function createIsFaded(highlightScope: HighlightScope<'heatmap'> | null | undefined, highlightedItem: HighlightItemIdentifier<'heatmap'> | null): (item: HighlightItemIdentifier<"heatmap"> | null) => boolean;